![\"T\u1ea1i](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2025\/12\/Why-That-Scrapped-Part-Wasnt-a-Machine-Failure\u2014It-Was-a-Method-Mismatch_w1200.jpg\")
<\/figure>\n\n\n\nM\u1ed9t v\u00ed d\u1ee5 g\u1ea7n \u0111\u00e2y \u0111\u1ebfn t\u1eeb m\u1ed9t nh\u00e0 m\u00e1y gia c\u00f4ng kim lo\u1ea1i \u1edf H\u00e0n Qu\u1ed1c, n\u01a1i \u0111\u00e3 \u0111\u1ea7u t\u01b0 v\u00e0o m\u1ed9t m\u00e1y ch\u1ea5n CNC 6\u20138 tr\u1ee5c. B\u1ea3n th\u00e2n m\u00e1y r\u1ea5t hi\u1ec7n \u0111\u1ea1i, nh\u01b0ng ph\u1ea7n c\u1ee9ng kh\u00f4ng ph\u1ea3i l\u00e0 b\u01b0\u1edbc ngo\u1eb7t. L\u1ee3i \u00edch th\u1ef1c s\u1ef1 \u0111\u1ebfn t\u1eeb ph\u1ea7n m\u1ec1m l\u1eadp tr\u00ecnh v\u00e0 m\u00f4 ph\u1ecfng ngo\u1ea1i tuy\u1ebfn \u0111i k\u00e8m. B\u1eb1ng c\u00e1ch chuy\u1ec3n ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n t\u1eeb th\u1eed nghi\u1ec7m th\u1ee7 c\u00f4ng sang d\u1ef1 \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1, nh\u00e0 m\u00e1y \u0111\u00e3 gi\u1ea3m c\u00f4ng vi\u1ec7c l\u00e0m l\u1ea1i xu\u1ed1ng 38% ch\u1ec9 trong ba th\u00e1ng.<\/p>\n\n\n\n
Nh\u00e0 m\u00e1y kh\u00f4ng ch\u1ec9 \u0111\u1ea7u t\u01b0 v\u00e0o m\u1ed9t chi\u1ebfc m\u00e1y t\u1ed1t h\u01a1n; h\u1ecd \u0111\u00e3 \u0111\u1ecbnh ngh\u0129a l\u1ea1i c\u00e1ch ti\u1ebfp c\u1eadn vi\u1ec7c u\u1ed1n. Thay v\u00ec ph\u1ea3n \u1ee9ng v\u1edbi v\u1eadt li\u1ec7u, nh\u00f3m b\u1eaft \u0111\u1ea7u coi m\u1ed7i l\u1ea7n u\u1ed1n l\u00e0 m\u1ed9t ph\u00e9p t\u00ednh d\u1ef1 b\u00e1o. C\u00e1c x\u01b0\u1edfng ch\u1ea1y theo c\u00e1i g\u1ecdi l\u00e0 \u201cph\u00e9p m\u00e0u CNC\u201d th\u01b0\u1eddng b\u1ecf l\u1ee1 \u0111i\u1ec3m tinh t\u1ebf n\u00e0y. N\u1ebfu b\u1ea1n c\u1ed1 u\u1ed1n h\u1edf th\u00e9p c\u00f3 gi\u1edbi h\u1ea1n \u0111\u00e0n h\u1ed3i cao tr\u00ean m\u1ed9t m\u00e1y kh\u00f4ng \u0111\u1ee7 \u0111\u1ed9 c\u1ee9ng ho\u1eb7c thi\u1ebfu ph\u1ea7n m\u1ec1m th\u00f4ng minh \u0111\u1ec3 b\u00f9 cho \u0111\u1ed9 b\u1eadt l\u1ea1i l\u1edbn, th\u00ec th\u1ea5t b\u1ea1i kh\u00f4ng ph\u1ea3i do c\u01a1 kh\u00ed\u2014m\u00e0 do ph\u01b0\u01a1ng ph\u00e1p. Vi\u1ec7c gi\u1ea3m 38% c\u00f4ng l\u00e0m l\u1ea1i l\u00e0 nh\u1edd m\u00f4 ph\u1ecfng c\u00e1c l\u1ea7n u\u1ed1n ngo\u1ea1i tuy\u1ebfn v\u00e0 bi\u1ebfn ph\u00e1n \u0111o\u00e1n c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh th\u00e0nh nguy\u00ean m\u1eabu kh\u00f4ng ph\u1ebf li\u1ec7u\u2014m\u1ed9t \u0111i\u1ec1u ho\u00e0n to\u00e0n kh\u1ea3 thi ngay c\u1ea3 tr\u00ean c\u00e1c h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c \u0111\u1ed3ng b\u1ed9 t\u1ea7m trung khi ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u00fang \u0111\u1eafn.<\/p>\n\n\n\n
M\u1ed1i Li\u00ean K\u1ebft \u1ea8n Gi\u1eefa V\u1eadt Li\u1ec7u, Ph\u01b0\u01a1ng Ph\u00e1p V\u00e0 M\u00e1y M\u00e0 Ch\u1eb3ng Ai Gi\u1ea3i Th\u00edch<\/h3>\n\n\n\n
C\u00f3 m\u1ed9t m\u1ed1i quan h\u1ec7 to\u00e1n h\u1ecdc tr\u1ef1c ti\u1ebfp gi\u1eefa t\u1ef7 l\u1ec7 ph\u1ebf li\u1ec7u v\u00e0 bi\u00ean l\u1ee3i nhu\u1eadn g\u1ed9p, nh\u01b0ng nhi\u1ec1u x\u01b0\u1edfng l\u1ea1i kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh l\u1ef1a ch\u1ecdn m\u00e1y m\u00f3c cho ph\u00f9 h\u1ee3p v\u1edbi ngu\u1ed3n v\u1eadt li\u1ec7u. C\u00e1c quy tr\u00ecnh \u0111\u1ed9t d\u1eadp v\u00e0 c\u1eaft laser truy\u1ec1n th\u1ed1ng tr\u00ean kim lo\u1ea1i t\u1ea5m th\u01b0\u1eddng t\u1ea1o ra t\u1ef7 l\u1ec7 ph\u1ebf li\u1ec7u t\u1eeb 15,9% tr\u1edf l\u00ean. Khi t\u1ea5m kim lo\u1ea1i \u0111\u00f3 \u0111\u1ebfn m\u00e1y ch\u1ea5n, b\u1ea1n \u0111\u00e3 b\u1eaft \u0111\u1ea7u v\u1edbi t\u1ed5n th\u1ea5t v\u1ec1 hi\u1ec7u su\u1ea5t v\u1eadt li\u1ec7u.<\/p>\n\n\n\n \u201cM\u1ed1i li\u00ean k\u1ebft \u1ea9n\u201d l\u00e0 ph\u01b0\u01a1ng ph\u00e1p cung \u1ee9ng v\u1eadt li\u1ec7u quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp lo\u1ea1i m\u00e1y ch\u1ea5n n\u00e0o hi\u1ec7u qu\u1ea3 nh\u1ea5t. Chuy\u1ec3n c\u00e1c chi ti\u1ebft c\u00f3 s\u1ea3n l\u01b0\u1ee3ng cao\u2014v\u1ed1n theo ph\u00e2n t\u00edch Pareto th\u01b0\u1eddng chi\u1ebfm 80% t\u1ed5ng ti\u00eau th\u1ee5 v\u1eadt li\u1ec7u\u2014sang d\u00e2y chuy\u1ec1n m\u00e1y ch\u1ea5n n\u1ea1p cu\u1ed9n c\u00f3 th\u1ec3 gi\u1ea3m ph\u1ebf li\u1ec7u ch\u1ec9 c\u00f2n 2\u20133%. L\u01b0\u1ee3ng v\u1eadt li\u1ec7u thu h\u1ed3i n\u00e0y tr\u1ef1c ti\u1ebfp chuy\u1ec3n h\u00f3a th\u00e0nh l\u1ee3i nhu\u1eadn m\u00e0 kh\u00f4ng m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh hu\u1ea5n luy\u1ec7n n\u00e0o c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 s\u00e1nh k\u1ecbp.<\/p>\n\n\n\n \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3, c\u1ea7n hi\u1ec3u r\u00f5 c\u00e1c gi\u1edbi h\u1ea1n c\u1ee7a m\u00e1y. M\u1ed9t m\u00e1y ch\u1ea5n \u0111i\u1ec7n, th\u01b0\u1eddng c\u00f3 gi\u00e1 h\u01a1n $300.000, cung c\u1ea5p \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ea7n thi\u1ebft cho u\u1ed1n h\u1edf th\u00e9p kh\u00f4ng g\u1ec9 m\u1ecfng\u2014n\u01a1i h\u1ec7 th\u1ee7y l\u1ef1c c\u00f3 th\u1ec3 t\u1ea1o l\u1ef1c kh\u00f4ng \u0111\u1ec1u v\u00e0 g\u00e2y n\u1ee9t m\u00e9p. Tuy nhi\u00ean, giao m\u1ed9t c\u00f4ng vi\u1ec7c u\u1ed1n ch\u1ea1m \u0111\u00e1y c\u00f3 l\u1ef1c l\u1edbn cho c\u00f9ng chi\u1ebfc m\u00e1y \u0111i\u1ec7n \u0111\u00f3 l\u1ea1i l\u00e0 m\u1ed9t c\u00e1ch s\u1eed d\u1ee5ng v\u1ed1n k\u00e9m hi\u1ec7u qu\u1ea3. Sai l\u1ea7m \u0111\u1eaft \u0111\u1ecf nh\u1ea5t kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ed7i d\u1ee5ng c\u1ee5 $500; m\u00e0 l\u00e0 coi m\u1ed9t lo\u1ea1i m\u00e1y ch\u1ea5n c\u00f3 th\u1ec3 d\u00f9ng cho m\u1ecdi tr\u01b0\u1eddng h\u1ee3p. M\u1ed7i 1% gi\u1ea3m ph\u1ebf li\u1ec7u \u0111\u1ec1u c\u1ea3i thi\u1ec7n tr\u1ef1c ti\u1ebfp l\u1ee3i nhu\u1eadn c\u1ee7a m\u00e1y ch\u1ea5n, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 ch\u1ec9 x\u1ea3y ra khi lo\u1ea1i m\u00e1y (\u0111i\u1ec7n hay th\u1ee7y l\u1ef1c), d\u1ea1ng v\u1eadt li\u1ec7u (t\u1ea5m hay cu\u1ed9n) v\u00e0 ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n (u\u1ed1n h\u1edf hay ch\u1ea1m \u0111\u00e1y) \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p c\u00f3 ch\u1ee7 \u0111\u00edch.<\/p>\n\n\n\n Trong nhi\u1ec1u th\u1eadp k\u1ef7, ng\u00e0nh n\u00e0y d\u1ef1a v\u00e0o \u201c\u0111\u00f4i tai v\u00e0ng\u201d c\u1ee7a ng\u01b0\u1eddi th\u1ee3 l\u00e0nh ngh\u1ec1\u2014ng\u01b0\u1eddi c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn ch\u00ednh x\u00e1c c\u1ea7n u\u1ed1n th\u00e9p A36 qu\u00e1 bao nhi\u00eau \u0111\u1ec3 khi b\u1eadt l\u1ea1i v\u1eabn \u0111\u1ea1t g\u00f3c 90\u00b0. Gi\u1edd \u0111\u00e2y, s\u1ef1 ph\u1ee5 thu\u1ed9c \u0111\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh g\u00e1nh n\u1eb7ng. Nh\u1eefng ti\u1ebfn b\u1ed9 trong luy\u1ec7n kim \u0111\u00e3 t\u1ea1o ra c\u00e1c h\u1ee3p kim c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 h\u00e0nh vi b\u1eadt l\u1ea1i kh\u00e1c nhau kh\u00f4ng ch\u1ec9 theo c\u1ea5p m\u00e0 c\u00f2n theo t\u1eebng l\u00f4 s\u1ea3n xu\u1ea5t. Kh\u00f4ng c\u00f3 m\u1ee9c tr\u1ef1c gi\u00e1c n\u00e0o c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u00e1ng tin c\u1eady c\u00e1ch m\u1ed9t t\u1ea5m th\u00e9p ch\u1ecbu k\u00e9o cao s\u1ebd ph\u1ea3n \u1ee9ng so v\u1edbi t\u1ea5m \u0111\u01b0\u1ee3c u\u1ed1n c\u00e1ch \u0111\u00f3 m\u1ed9t gi\u1edd.<\/p>\n\n\n\n S\u1ef1 thay \u0111\u1ed5i n\u00e0y c\u0169ng l\u00fd gi\u1ea3i v\u00ec sao c\u00e1c m\u00e1y 6\u20138 tr\u1ee5c chi\u1ebfm 11% doanh thu th\u1ecb tr\u01b0\u1eddng n\u0103m 2022. T\u1ed1c \u0111\u1ed9 kh\u00f4ng ph\u1ea3i l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh\u2014m\u00e0 l\u00e0 tr\u00ed tu\u1ec7. Nh\u1eefng m\u00e1y n\u00e0y s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m m\u00f4 ph\u1ecfng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u1ed9 b\u1eadt l\u1ea1i tr\u01b0\u1edbc khi thanh ch\u1ea5n h\u1ea1 xu\u1ed1ng. \u0110\u1ebfn n\u0103m 2024, h\u01a1n 35% m\u00e1y ch\u1ea5n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u1edf B\u1eafc M\u1ef9 c\u00f3 t\u00ednh n\u0103ng CNC \u0111a tr\u1ee5c c\u00f9ng l\u1eadp tr\u00ecnh ngo\u1ea1i tuy\u1ebfn. Ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111ang d\u1ea7n lo\u1ea1i b\u1ecf \u201cc\u00e1c l\u1ea7n u\u1ed1n th\u1eed\u201d, v\u1ed1n c\u00f3 th\u1ec3 \u0111\u1ea9y t\u1ef7 l\u1ec7 ph\u1ebf li\u1ec7u l\u00ean t\u1edbi 15% v\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c ph\u1ee9c t\u1ea1p, v\u00e0 thay v\u00e0o \u0111\u00f3 l\u00e0 th\u1ef1c hi\u1ec7n d\u1ef1a tr\u00ean d\u1eef li\u1ec7u.<\/p>\n\n\n\n Trong s\u1ea3n xu\u1ea5t hi\u1ec7n \u0111\u1ea1i, \u201cc\u00f4ng c\u1ee5 ng\u0103n th\u1ea3m h\u1ecda\u201d th\u1ef1c s\u1ef1 kh\u00f4ng c\u00f2n l\u00e0 \u0111\u00f4i tay kh\u00e9o l\u00e9o m\u00e0 l\u00e0 m\u00f4 ph\u1ecfng h\u1ec7 s\u1ed1 K ch\u00ednh x\u00e1c. M\u1ed9t c\u01a1 s\u1edf \u0111\u00e3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n c\u00e1c l\u1ea7n u\u1ed1n th\u1eed b\u1eb1ng c\u00e1ch t\u00edch h\u1ee3p \u0111\u1ed9 d\u1ebbo c\u1ee7a h\u1ee3p kim v\u00e0o ch\u01b0\u01a1ng tr\u00ecnh tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u s\u1ea3n xu\u1ea5t. Ph\u1ea7n m\u1ec1m s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u00ednh to\u00e1n m\u1ee9c u\u1ed1n d\u01b0 c\u1ea7n thi\u1ebft, khi\u1ebfn c\u1ea3m gi\u00e1c th\u1ee7 c\u00f4ng tr\u1edf n\u00ean kh\u00f4ng quan tr\u1ecdng. Trong b\u1ed1i c\u1ea3nh th\u1eddi gian \u0111\u00e0o t\u1ea1o cho nh\u00e2n vi\u00ean m\u1edbi ph\u1ea3i r\u00fat ng\u1eafn m\u1ed9t n\u1eeda ch\u1ec9 \u0111\u1ec3 \u0111\u1ee7 ca l\u00e0m, vi\u1ec7c y\u00eau c\u1ea7u con ng\u01b0\u1eddi b\u00f9 tr\u1eeb cho quy lu\u1eadt v\u1eadt l\u00fd c\u00f2n t\u1ed1n k\u00e9m h\u01a1n \u0111\u1ea7u t\u01b0 v\u00e0o ph\u1ea7n m\u1ec1m t\u1ed1t h\u01a1n.<\/p>\n\n\n\n U\u1ed1n h\u1edf l\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u1eb7c \u0111\u1ecbnh trong s\u1ea3n xu\u1ea5t ch\u00ednh x\u00e1c hi\u1ec7n \u0111\u1ea1i, \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao v\u00ec kh\u1ea3 n\u0103ng t\u1ea1o ra nhi\u1ec1u g\u00f3c \u0111\u1ed9 kh\u00e1c nhau ch\u1ec9 v\u1edbi m\u1ed9t b\u1ed9 d\u1ee5ng c\u1ee5. Tuy nhi\u00ean, s\u1ef1 linh ho\u1ea1t \u0111\u00f3 ho\u00e0n to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o kh\u1ea3 n\u0103ng c\u1ee7a m\u00e1y trong vi\u1ec7c ki\u1ec3m so\u00e1t v\u00e0 b\u00f9 tr\u1eeb s\u1ee9c kh\u00e1ng t\u1ef1 nhi\u00ean c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n Trong u\u1ed1n h\u1edf, ch\u00e0y h\u1ea1 xu\u1ed1ng r\u00e3nh V m\u00e0 kh\u00f4ng \u00e9p t\u1ea5m ch\u1ea1m \u0111\u00e1y d\u1ee5ng c\u1ee5. V\u1eadt li\u1ec7u ch\u1ec9 ti\u1ebfp x\u00fac \u1edf ba \u0111i\u1ec3m: \u0111\u1ea7u ch\u00e0y v\u00e0 hai vai c\u1ee7a khu\u00f4n. V\u00ec ch\u00e0y ch\u1ec9 th\u1ee5t v\u00e0o 30\u201350% \u0111\u1ed9 s\u00e2u r\u00e3nh V, kim lo\u1ea1i gi\u1eef l\u1ea1i ph\u1ea7n \u0111\u00e1ng k\u1ec3 m\u00f4 \u0111\u00e0n h\u1ed3i, \u0111\u00e2y ch\u00ednh l\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng b\u1eadt l\u1ea1i.<\/p>\n\n\n\n Khi p\u00edt-t\u00f4ng r\u00fat l\u1ea1i, kim lo\u1ea1i t\u1ef1 nhi\u00ean c\u00f3 xu h\u01b0\u1edbng tr\u1edf l\u1ea1i h\u00ecnh d\u1ea1ng ph\u1eb3ng ban \u0111\u1ea7u. V\u1edbi th\u00e9p m\u1ec1m, m\u1ed9t g\u00f3c u\u1ed1n \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh \u1edf 90\u00b0 s\u1ebd \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i kho\u1ea3ng 92\u00b0. \u0110\u1ec3 b\u00f9 tr\u1eeb, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u1ed1 t\u00ecnh u\u1ed1n qu\u00e1 m\u1ee9c\u2014th\u01b0\u1eddng t\u1eeb 2\u20135\u00b0, t\u00f9y thu\u1ed9c v\u00e0o gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u. Th\u00e1ch th\u1ee9c n\u00e0y tr\u1edf n\u00ean r\u00f5 r\u1ec7t h\u01a1n nhi\u1ec1u v\u1edbi th\u00e9p kh\u00f4ng g\u1ec9, n\u01a1i \u0111\u1ed9 \u0111\u00e0n h\u1ed3i c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u1eeb 1\u20132\u00b0 cho m\u1ed7i 0,001 inch thay \u0111\u1ed5i \u0111\u1ed9 d\u00e0y. Do \u0111\u00f3, ng\u01b0\u1eddi v\u1eadn h\u00e0nh bu\u1ed9c ph\u1ea3i t\u00ednh to\u00e1n ch\u00ednh x\u00e1c g\u00f3c u\u1ed1n b\u00f9 thay v\u00ec tin v\u00e0o c\u00e0i \u0111\u1eb7t \u0111\u1ed9 s\u00e2u danh ngh\u0129a c\u1ee7a m\u00e1y.<\/p>\n\n\n\n \u01afu \u0111i\u1ec3m l\u1edbn nh\u1ea5t c\u1ee7a u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed\u2014s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t khu\u00f4n ch\u1eef V 85\u00b0 \u0111\u1ec3 t\u1ea1o ra c\u00e1c g\u00f3c u\u1ed1n t\u1eeb 90\u00b0 \u0111\u1ebfn 140\u00b0\u2014c\u0169ng ch\u00ednh l\u00e0 \u0111i\u1ec3m y\u1ebfu c\u1ee7a n\u00f3. G\u00f3c u\u1ed1n cu\u1ed1i c\u00f9ng ho\u00e0n to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 xuy\u00ean c\u1ee7a p\u00edt-t\u00f4ng (tr\u1ee5c Y). \u0110\u1ec3 duy tr\u00ec g\u00f3c u\u1ed1n \u1ed5n \u0111\u1ecbnh, p\u00edt-t\u00f4ng ph\u1ea3i l\u1eb7p l\u1ea1i v\u1ecb tr\u00ed c\u1ee7a n\u00f3 trong ph\u1ea1m vi \u00b10,01 mm.<\/p>\n\n\n\n C\u00e1c h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c NC c\u0169 th\u01b0\u1eddng kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c. Khi d\u1ea7u th\u1ee7y l\u1ef1c n\u00f3ng l\u00ean, v\u1ecb tr\u00ed p\u00edt-t\u00f4ng c\u00f3 th\u1ec3 l\u1ec7ch \u0111\u1ee7 \u0111\u1ec3 thay \u0111\u1ed5i g\u00f3c u\u1ed1n \u0111\u1ebfn 0,5\u00b0. S\u1ef1 l\u1ec7ch n\u00e0y bu\u1ed9c ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i th\u1ef1c hi\u1ec7n ba ho\u1eb7c nhi\u1ec1u l\u1ea7n u\u1ed1n th\u1eed cho m\u1ed7i l\u1ea7n thi\u1ebft l\u1eadp ch\u1ec9 \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh g\u00f3c. Ng\u01b0\u1ee3c l\u1ea1i, u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed hi\u1ec7n \u0111\u1ea1i ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n CNC ti\u00ean ti\u1ebfn \u0111\u01b0\u1ee3c trang b\u1ecb c\u1ea3m bi\u1ebfn quang h\u1ecdc ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111o g\u00f3c b\u1eb1ng laser t\u1ef1 \u0111\u1ed9ng hi\u1ec7u ch\u1ec9nh g\u00f3c u\u1ed1n theo th\u1eddi gian th\u1ef1c\u2014gi\u1ea3m ph\u1ebf ph\u1ea9m v\u00e0 gia c\u00f4ng l\u1ea1i \u0111\u1ebfn 60% so v\u1edbi \u0111i\u1ec1u ch\u1ec9nh th\u1ee7 c\u00f4ng.<\/p>\n\n\n\n \u0110\u1ed1i v\u1edbi v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao nh\u01b0 th\u00e9p 4140 ho\u1eb7c AR500 (gi\u1edbi h\u1ea1n ch\u1ea3y tr\u00ean 60 ksi), u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed th\u01b0\u1eddng l\u00e0 l\u1ef1a ch\u1ecdn kh\u1ea3 thi duy nh\u1ea5t. \u00c9p c\u00e1c h\u1ee3p kim n\u00e0y xu\u1ed1ng \u0111\u00e1y khu\u00f4n c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng d\u1ee5ng c\u1ee5 ho\u1eb7c g\u00e2y n\u1ee9t v\u1eadt li\u1ec7u nghi\u00eam tr\u1ecdng. Thay v\u00e0o \u0111\u00f3, ng\u01b0\u1eddi v\u1eadn h\u00e0nh d\u1ef1a v\u00e0o ph\u01b0\u01a1ng ph\u00e1p \u201cch\u00e0y th\u1ea3 n\u1ed5i\u201d, d\u1eebng p\u00edt-t\u00f4ng c\u00e1ch \u0111\u1ed9 s\u00e2u l\u00fd thuy\u1ebft 0,5\u20131 mm cho g\u00f3c m\u1ee5c ti\u00eau. C\u00e1ch n\u00e0y ph\u00e2n b\u1ed5 \u1ee9ng su\u1ea5t \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n d\u1ecdc theo b\u00e1n k\u00ednh u\u1ed1n thay v\u00ec t\u1eadp trung \u1edf \u0111\u1ea7u ch\u00e0y. Trong khi k\u1ef9 thu\u1eadt n\u00e0y lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng n\u1ee9t c\u1ea1nh ph\u1ed5 bi\u1ebfn \u1edf kho\u1ea3ng 70% c\u00e1c thi\u1ebft l\u1eadp c\u1ee9ng, n\u00f3 y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c servo\u2011\u0111i\u1ec7n m\u00e0 c\u00e1c m\u00e1y \u00e9p th\u1ee7y l\u1ef1c c\u0169 kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n U\u1ed1n ch\u1ea1m \u0111\u00e1y th\u01b0\u1eddng b\u1ecb nh\u1ea7m l\u00e0 \u201cu\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed v\u1edbi l\u1ef1c \u00e9p l\u1edbn h\u01a1n.\u201d Th\u1ef1c t\u1ebf, \u0111\u00e2y l\u00e0 m\u1ed9t quy tr\u00ecnh ho\u00e0n to\u00e0n kh\u00e1c\u2014n\u00f3 x\u00e1c \u0111\u1ecbnh g\u00f3c u\u1ed1n b\u1eb1ng s\u1ef1 kh\u1edbp h\u00ecnh h\u1ecdc v\u1edbi khu\u00f4n thay v\u00ec \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c \u0111\u1ed9 s\u00e2u.<\/p>\n\n\n\n Trong khi u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed ch\u1ec9 l\u00e0m v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac m\u1ed9t ph\u1ea7n, u\u1ed1n ch\u1ea1m \u0111\u00e1y \u00e9p t\u1ea5m kim lo\u1ea1i n\u1eb1m s\u00e1t vai khu\u00f4n ch\u1eef V. Th\u00f4ng th\u01b0\u1eddng, n\u00f3 c\u1ea7n l\u1ef1c g\u1ea5p \u0111\u00f4i so v\u1edbi u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed, nh\u01b0ng m\u1ee5c ti\u00eau kh\u00f4ng ph\u1ea3i l\u00e0 xuy\u00ean v\u1eadt li\u1ec7u\u2014m\u00e0 l\u00e0 kh\u00f3a c\u01a1 h\u1ecdc. B\u1eb1ng c\u00e1ch bu\u1ed9c t\u1ea5m kim lo\u1ea1i ho\u00e0n to\u00e0n kh\u1edbp v\u1edbi g\u00f3c khu\u00f4n, u\u1ed1n ch\u1ea1m \u0111\u00e1y n\u00e9n v\u00f9ng \u0111\u00e0n h\u1ed3i c\u1ee7a n\u1ebfp u\u1ed1n. S\u1ef1 r\u00e0ng bu\u1ed9c h\u00ecnh h\u1ecdc n\u00e0y l\u00e0m gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e0n h\u1ed3i v\u1ec1 m\u1ed9t m\u1ee9c c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u00b10,5\u00b0, t\u1ea1o ra g\u00f3c u\u1ed1n \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng c\u1ea7n t\u00ednh to\u00e1n \u0111\u1ed9 s\u00e2u ph\u1ee9c t\u1ea1p nh\u01b0 u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed.<\/p>\n\n\n\n U\u1ed1n ch\u1ea1m \u0111\u00e1y th\u00e0nh c\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1i g\u1ecdi l\u00e0 \u201cQuy t\u1eafc khu\u00f4n ch\u1eef V.\u201d V\u1edbi th\u00e9p m\u1ec1m c\u00f3 \u0111\u1ed9 d\u00e0y d\u01b0\u1edbi 1\/4\u2033, \u0111\u1ed9 m\u1edf l\u00fd t\u01b0\u1edfng c\u1ee7a khu\u00f4n ch\u1eef V l\u00e0 g\u1ea5p t\u00e1m l\u1ea7n \u0111\u1ed9 d\u00e0y v\u1eadt li\u1ec7u. T\u1ef7 l\u1ec7 n\u00e0y cung c\u1ea5p \u0111\u1ee7 khe h\u1edf \u0111\u1ec3 n\u1ebfp u\u1ed1n h\u00ecnh th\u00e0nh trong khi v\u1eabn cho ph\u00e9p t\u1ea5m kim lo\u1ea1i kh\u00f3a ch\u1eafc v\u00e0o vai khu\u00f4n \u1edf cu\u1ed1i h\u00e0nh tr\u00ecnh. Si\u1ebft khu\u00f4n xu\u1ed1ng c\u00f2n 6 l\u1ea7n \u0111\u1ed9 d\u00e0y s\u1ebd l\u00e0m t\u0103ng l\u1ef1c y\u00eau c\u1ea7u v\u00e0 nguy c\u01a1 h\u01b0 h\u1ea1i b\u1ec1 m\u1eb7t. M\u1edf r\u1ed9ng khu\u00f4n l\u00ean 12 l\u1ea7n th\u01b0\u1eddng c\u1ea7n thi\u1ebft cho nh\u00f4m \u0111\u1ec3 tr\u00e1nh n\u1ee9t g\u00e3y, nh\u01b0ng kho\u1ea3ng h\u1edf th\u00eam n\u00e0y l\u1ea1i l\u00e0m t\u0103ng \u0111\u00e0n h\u1ed3i, c\u1ea7n b\u00f9 b\u1eb1ng h\u00e0nh tr\u00ecnh s\u00e2u h\u01a1n.<\/p>\n\n\n\n U\u1ed1n ch\u1ea1m \u0111\u00e1y ph\u00e1t huy hi\u1ec7u qu\u1ea3 nh\u1ea5t trong c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t trung b\u00ecnh \u0111\u1ebfn l\u1edbn (tr\u00ean 500 chi ti\u1ebft) s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u \u0111\u1ed3ng nh\u1ea5t nh\u01b0 th\u00e9p m\u1ea1 k\u1ebdm d\u00e0y 10\u201320 gauge. B\u1edfi v\u00ec g\u00f3c cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi h\u00ecnh d\u1ea1ng khu\u00f4n ch\u1ee9 kh\u00f4ng ph\u1ea3i \u0111\u1ed9 s\u00e2u c\u1ee7a p\u00edt-t\u00f4ng, vi\u1ec7c thi\u1ebft l\u1eadp nhanh h\u01a1n v\u00e0 lo\u1ea1i b\u1ecf s\u1ef1 th\u1eed sai trong qu\u00e1 tr\u00ecnh u\u1ed1n qu\u00e1 m\u1ee9c. Trong khi u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed mang l\u1ea1i s\u1ef1 linh ho\u1ea1t, t\u00ednh bi\u1ebfn thi\u00ean c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng t\u1ef7 l\u1ec7 ph\u1ebf ph\u1ea9m t\u1edbi 15% trong c\u00e1c \u0111\u1ee3t d\u00e0i. U\u1ed1n ch\u1ea1m \u0111\u00e1y mang l\u1ea1i quy tr\u00ecnh \u1ed5n \u0111\u1ecbnh, c\u00f3 kh\u1ea3 n\u0103ng l\u1eb7p l\u1ea1i cao, tr\u00e1nh \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng c\u1ef1c \u0111\u1ea1i nh\u01b0 trong u\u1ed1n d\u1eadp (coining), k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5 v\u00e0 c\u00f3 th\u1ec3 gi\u1ea3m chi ph\u00ed t\u1ed5ng th\u1ec3 c\u1ee7a c\u00f4ng vi\u1ec7c t\u1eeb 20\u201330% khi \u00e1p d\u1ee5ng \u0111\u00fang tr\u01b0\u1eddng h\u1ee3p.<\/p>\n\n\n\n U\u1ed1n d\u1eadp l\u00e0 ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n kim lo\u1ea1i t\u1ea5m l\u00e2u \u0111\u1eddi nh\u1ea5t\u2014v\u00e0 m\u1ea1nh nh\u1ea5t. N\u00f3 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e0n h\u1ed3i b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i v\u0129nh vi\u1ec5n c\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a kim lo\u1ea1i, nh\u01b0ng \u0111\u1ed9 ch\u00ednh x\u00e1c n\u00e0y ph\u1ea3i tr\u1ea3 gi\u00e1 b\u1eb1ng t\u1ea3i tr\u1ecdng m\u00e1y l\u1edbn v\u00e0 m\u00e0i m\u00f2n d\u1ee5ng c\u1ee5 nhanh.<\/p>\n\n\n\n U\u1ed1n d\u1eadp kh\u00f4ng ch\u1ec9 u\u1ed1n kim lo\u1ea1i\u2014m\u00e0 c\u00f2n in d\u1ea5u l\u00ean n\u00f3. Ch\u00e0y \u00e9p m\u1ea1nh v\u00e0o v\u1eadt li\u1ec7u, \u0111\u1ea9y t\u1ea5m kim lo\u1ea1i v\u01b0\u1ee3t qu\u00e1 tr\u1ee5c trung h\u00f2a 10\u201315% v\u00e0 n\u00e9n b\u00e1n k\u00ednh u\u1ed1n cho \u0111\u1ebfn khi n\u00f3 m\u1ecfng c\u00f2n kho\u1ea3ng 0,3\u00d7 \u0111\u1ed9 d\u00e0y ban \u0111\u1ea7u. T\u1ea3i tr\u1ecdng c\u1ef1c l\u1edbn n\u00e0y\u2014th\u01b0\u1eddng g\u1ea5p ba \u0111\u1ebfn n\u0103m l\u1ea7n l\u1ef1c c\u1ea7n cho u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed\u2014l\u00e0m c\u1ee9ng \u0111\u00e1ng k\u1ec3 c\u1ea5u tr\u00fac h\u1ea1t t\u1ea1i v\u00f9ng u\u1ed1n. Gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u00f9ng b\u1ecb \u1ea3nh h\u01b0\u1edfng t\u0103ng 20\u201330%, trong khi \u0111\u1ed9 d\u1ebbo gi\u1ea3m kho\u1ea3ng 40%. V\u1ec1 th\u1ef1c ch\u1ea5t, \u201ctr\u00ed nh\u1edb \u0111\u00e0n h\u1ed3i\u201d c\u1ee7a kim lo\u1ea1i b\u1ecb x\u00f3a b\u1ecf, t\u1ea1o ra n\u1ebfp u\u1ed1n g\u1ea7n nh\u01b0 kh\u00f4ng c\u00f3 \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i.<\/p>\n\n\n\n Ph\u1ea7n l\u1edbn ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00e3 t\u1eeb b\u1ecf u\u1ed1n d\u1eadp v\u00ec u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed v\u1edbi CNC hi\u1ec7n \u0111\u1ea1i mang l\u1ea1i \u0111\u1ee7 \u0111\u1ed9 ch\u00ednh x\u00e1c m\u00e0 kh\u00f4ng c\u1ea7n d\u00f9ng \u0111\u1ebfn l\u1ef1c c\u1ef1c m\u1ea1nh. Chi ph\u00ed c\u1ee7a u\u1ed1n d\u1eadp xu\u1ea5t hi\u1ec7n nhanh ch\u00f3ng trong vi\u1ec7c m\u00f2n d\u1ee5ng c\u1ee5: \u0111\u1ea7u ch\u00e0y c\u00f3 th\u1ec3 ph\u00ecnh v\u00e0 m\u1ea5t \u0111\u1ed9 ch\u00ednh x\u00e1c ch\u1ec9 sau kho\u1ea3ng 1.000 l\u1ea7n \u00e9p tr\u00ean th\u00e9p d\u00e0y 1\/4\u2033, m\u00f2n nhanh g\u1ea5p n\u0103m l\u1ea7n so v\u1edbi d\u1ee5ng c\u1ee5 u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed. D\u00f9 v\u1eady, u\u1ed1n d\u1eadp v\u1eabn c\u00f3 ch\u1ed7 \u0111\u1ee9ng trong nh\u1eefng \u1ee9ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t\u2014nh\u01b0 chi ti\u1ebft h\u00e0ng kh\u00f4ng c\u00f3 m\u00e9p g\u1ea5p quan tr\u1ecdng, ho\u1eb7c t\u1ea1o h\u00ecnh titan khi \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u01b0\u1ee3t qu\u00e1 3\u00b0 v\u00e0 n\u1eb1m ngo\u00e0i ph\u1ea1m vi d\u1ef1 \u0111o\u00e1n tin c\u1eady c\u1ee7a thu\u1eadt to\u00e1n b\u00f9 CNC.<\/p>\n\n\n\n Vi\u1ec7c l\u1ef1a ch\u1ecdn d\u1eadp \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c \u0111\u00e1nh \u0111\u1ed5i tu\u1ed5i th\u1ecd c\u1ee7a d\u1ee5ng c\u1ee5 l\u1ea5y \u0111\u1ed9 ch\u00ednh x\u00e1c v\u1ec1 k\u00edch th\u01b0\u1edbc. M\u1ed9t l\u1ea7n u\u1ed1n c\u1ea7n 100 t\u1ea5n trong u\u1ed1n t\u1ef1 do c\u00f3 th\u1ec3 y\u00eau c\u1ea7u 400\u2013500 t\u1ea5n khi d\u1eadp. \u1ede m\u1ee9c l\u1ef1c \u0111\u00f3, ch\u1ec9 c\u1ea7n m\u1ed9t sai s\u1ed1 nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 khi\u1ebfn ch\u00e0y b\u1ecb \u00e9p v\u0129nh vi\u1ec5n v\u00e0o khu\u00f4n. V\u1edbi nh\u1eefng v\u1eadt li\u1ec7u c\u1ee9ng h\u01a1n nh\u00f4m 6061-T6 d\u00e0y 0.187\u2033, qu\u00e1 tr\u00ecnh d\u1eadp nhanh ch\u00f3ng l\u00e0m x\u01b0\u1edbc v\u00e0 ph\u00e1 h\u1ee7y khu\u00f4n. M\u1eb7c d\u00f9 c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c sai l\u1ec7ch dung sai 0.1\u00b0, c\u00e1i gi\u00e1 th\u1ef1c t\u1ebf th\u01b0\u1eddng l\u00e0 ph\u1ea3i thay 1 \u0111\u1ebfn 2 b\u1ed9 d\u1ee5ng c\u1ee5 tr\u1ecb gi\u00e1 h\u00e0ng ngh\u00ecn \u0111\u00f4 la sau m\u1ed7i 5.000 chu k\u1ef3 \u2014 m\u1ed9t s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i m\u00e0 r\u1ea5t \u00edt x\u01b0\u1edfng gia c\u00f4ng c\u00f3 th\u1ec3 ch\u1ecbu n\u1ed5i.<\/p>\n\n\n\n M\u00e1y ch\u1ea5n th\u1ee7y l\u1ef1c th\u01b0\u1eddng b\u1ecb cho l\u00e0 nh\u1eefng c\u1ed7 m\u00e1y t\u0129nh, kh\u00f4ng bi\u1ebfn d\u1ea1ng \u2014 n\u1eb7ng \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 ch\u00ednh x\u00e1c d\u01b0\u1eddng nh\u01b0 l\u00e0 t\u1ef1 nhi\u00ean. Th\u1ef1c t\u1ebf, m\u1ed9t m\u00e1y ch\u1ea5n th\u1ee7y l\u1ef1c ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1ed9ng, thay \u0111\u1ed5i h\u00ecnh d\u1ea1ng tinh vi trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh. D\u00f9 v\u1eabn l\u00e0 gi\u1ea3i ph\u00e1p ti\u00eau chu\u1ea9n trong ng\u00e0nh ch\u1ebf t\u1ea1o n\u00f3i chung, vi\u1ec7c duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c trong su\u1ed1t m\u1ed9t ca l\u00e0m vi\u1ec7c \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t ch\u1ee7 \u0111\u1ed9ng v\u00e0 c\u00f3 ch\u1ee7 \u0111\u00edch.<\/p>\n\n\n\n K\u1ebb th\u00f9 th\u1ef1c s\u1ef1 c\u1ee7a hi\u1ec7u su\u1ea5t th\u1ee7y l\u1ef1c kh\u00f4ng ph\u1ea3i l\u00e0 thi\u1ebfu c\u00f4ng su\u1ea5t \u2014 m\u00e0 l\u00e0 nhi\u1ec7t. Trong s\u1ea3n xu\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn, \u0111\u1ed9 tr\u00f4i tr\u1ee5c Y tr\u1edf n\u00ean r\u00f5 r\u1ec7t nh\u1ea5t khi c\u00e1c xi lanh \u0111\u1ed3ng b\u1ed9 d\u1ea7n m\u1ea5t song song sau kho\u1ea3ng 500 chu k\u1ef3. \u00c1p su\u1ea5t li\u00ean t\u1ee5c l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 d\u1ea7u, v\u00e0 khi ch\u1ea5t l\u1ecfng th\u1ee7y l\u1ef1c lo\u00e3ng ra c\u0169ng nh\u01b0 thanh tr\u01b0\u1ee3t gi\u00e3n n\u1edf, \u0111\u1ed9 l\u1eb7p l\u1ea1i c\u00f3 th\u1ec3 gi\u1ea3m t\u1eeb \u00b10.01 mm ch\u1eb7t ch\u1ebd xu\u1ed1ng \u00b10.05 mm kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n Tr\u00ean m\u1ed9t chi ti\u1ebft d\u00e0i 3 m\u00e9t, \u0111\u1ed9 tr\u00f4i n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn sai l\u1ec7ch g\u00f3c t\u1eeb 0.5 mm \u0111\u1ebfn 1 mm n\u1ebfu kh\u00f4ng \u0111i\u1ec1u ch\u1ec9nh k\u1ecbp th\u1eddi. M\u1ed9t thi\u1ebft l\u1eadp ho\u00e0n h\u1ea3o l\u00fac 8:00 s\u00e1ng c\u00f3 th\u1ec3 \u00e2m th\u1ea7m sinh ra ph\u1ebf ph\u1ea9m l\u00fac 10:30. M\u00e1y \u0111\u1ed3ng b\u1ed9 th\u1ee7y l\u1ef1c c\u1ed1 g\u1eafng b\u00f9 tr\u1eeb b\u1eb1ng \u0111i\u1ec1u khi\u1ec3n k\u1ef9 thu\u1eadt s\u1ed1 \u0111\u1ec3 gi\u1eef c\u00e1c xi lanh \u0111\u1ed3ng b\u1ed9, nh\u01b0ng kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi quy lu\u1eadt v\u1eadt l\u00fd c\u1ee7a gi\u00e3n n\u1edf nhi\u1ec7t. Nh\u1eefng x\u01b0\u1edfng gi\u00e0u kinh nghi\u1ec7m kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e1ch d\u1eebng 10 gi\u00e2y gi\u1eefa c\u00e1c chu k\u1ef3 \u0111\u1ec3 t\u1ea3n nhi\u1ec7t ho\u1eb7c chuy\u1ec3n sang thi\u1ebft k\u1ebf c\u00f3 ch\u1eb7n \u0111ai \u1ed1c. Lo\u1ea1i n\u00e0y th\u00eam c\u00e1c ch\u1eb7n c\u01a1 kh\u00ed \u0111\u1ec3 lo\u1ea1i b\u1ecf \u0111\u1ed9 tr\u00f4i khi l\u00e0m vi\u1ec7c chi ti\u1ebft ph\u1ee9c t\u1ea1p, d\u00f9 ph\u1ea3i \u0111\u00e1nh \u0111\u1ed5i t\u00ednh linh ho\u1ea1t khi c\u1ea7n thay \u0111\u1ed5i t\u1ea3i tr\u1ecdng cho t\u1ea5m d\u00e0y.<\/p>\n\n\n\n D\u00f9 c\u1ea7n qu\u1ea3n l\u00fd nhi\u1ec7t, m\u00e1y ch\u1ea5n th\u1ee7y l\u1ef1c v\u1eabn th\u1ed1ng tr\u1ecb trong l\u0129nh v\u1ef1c gia c\u00f4ng t\u1ea5m n\u1eb7ng v\u00ec m\u1ed9t l\u00fd do v\u01b0\u1ee3t tr\u1ed9i: kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng. Kh\u00f4ng c\u00f4ng ngh\u1ec7 n\u00e0o kh\u00e1c c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng th\u1ef1c t\u1ebf t\u1edbi 3.000 t\u1ea5n tr\u00ean b\u00e0n d\u00e0i 50 foot. Khi u\u1ed1n titan ho\u1eb7c v\u1eadt li\u1ec7u phi kim lo\u1ea1i d\u00e0y, c\u00e1c h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c song song c\u00f3 th\u1ec3 li\u00ean k\u1ebft nhi\u1ec1u m\u00e1y v\u1edbi nhau \u0111\u1ec3 t\u0103ng g\u1ea5p \u0111\u00f4i n\u0103ng l\u1ef1c u\u1ed1n \u2014 m\u00e0 kh\u00f4ng b\u1ecb v\u00f5ng ch\u00e0y nh\u01b0 c\u00e1c h\u1ec7 truy\u1ec1n \u0111\u1ed9ng kh\u00e1c.<\/p>\n\n\n\n C\u00e1c xi lanh th\u1ee7y l\u1ef1c c\u0169ng cung c\u1ea5p kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9 bi\u1ebfn thi\u00ean v\u00e0 r\u00fat ch\u00e0y c\u00f3 ki\u1ec3m so\u00e1t c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng 100\u2013300 t\u1ea5n \u2014 nh\u1eefng \u1ee9ng d\u1ee5ng c\u00f3 th\u1ec3 nhanh ch\u00f3ng ph\u00e1 h\u1ee7y c\u00e1c b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n. D\u00f9 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh theo ki\u1ec3u ch\u1ea5n \u0111\u1ea9y l\u00ean ho\u1eb7c \u0111\u1ea9y xu\u1ed1ng \u2014 hy sinh m\u1ed9t ph\u1ea7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00e0nh tr\u00ecnh \u0111\u1ec3 l\u1ea5y kho\u1ea3ng kh\u00f4ng cho t\u1ea5m d\u00e0y h\u01a1n 0.25 inch \u2014 m\u00e1y ch\u1ea5n th\u1ee7y l\u1ef1c v\u1eabn l\u00e0 l\u1ef1a ch\u1ecdn th\u1ef1c t\u1ebf duy nh\u1ea5t khi c\u00f4ng vi\u1ec7c \u0111\u00f2i h\u1ecfi l\u1ef1c \u00e9p l\u1edbn v\u00e0 \u1ed5n \u0111\u1ecbnh tr\u00ean di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t r\u1ed9ng.<\/p>\n\n\n\n N\u1ebfu h\u1ec7 th\u1ee7y l\u1ef1c l\u00e0 b\u00faa t\u1ea1, th\u00ec m\u00e1y servo-\u0111i\u1ec7n l\u00e0 dao m\u1ed5. Ch\u00fang hy sinh t\u1ea3i tr\u1ecdng v\u00f4 h\u1ea1n \u0111\u1ec3 \u0111\u1ed5i l\u1ea5y t\u1ed1c \u0111\u1ed9, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh. Nh\u1edd s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 servo ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng khi c\u1ea7n thay v\u00ec ch\u1ea1y li\u00ean t\u1ee5c, nh\u1eefng m\u00e1y ch\u1ea5n n\u00e0y c\u00f3 th\u1ec3 gi\u1ea3m ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng 30\u201340% so v\u1edbi h\u1ec7 th\u1ee7y l\u1ef1c trong c\u00e1c c\u00f4ng vi\u1ec7c d\u01b0\u1edbi 50 t\u1ea5n.<\/p>\n\n\n\n Vi\u1ec7c lo\u1ea1i b\u1ecf d\u1ea7u th\u1ee7y l\u1ef1c lo\u1ea1i tr\u1eeb ho\u00e0n to\u00e0n nguy c\u01a1 r\u00f2 r\u1ec9, c\u0169ng nh\u01b0 g\u00e1nh n\u1eb7ng b\u1ea3o tr\u00ec \u0111\u1ecbnh k\u1ef3 cho b\u1ed9 l\u1ecdc, ph\u1edbt, v\u00e0 qu\u1ea3n l\u00fd ch\u1ea5t l\u1ecfng. Thay v\u00e0o \u0111\u00f3, c\u00e1c thanh tr\u01b0\u1ee3t d\u1eabn \u0111\u1ed9ng v\u00edt bi cung c\u1ea5p l\u1ef1c v\u1edbi \u0111\u1ed9 l\u1eb7p l\u1ea1i \u00b10.005 mm v\u00e0 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nhanh g\u1ea5p m\u01b0\u1eddi l\u1ea7n so v\u1edbi h\u1ec7 th\u1ee7y l\u1ef1c khi h\u00e0nh tr\u00ecnh ng\u1eafn. K\u1ebft h\u1ee3p n\u00e0y khi\u1ebfn m\u00e1y ch\u1ea5n servo-\u0111i\u1ec7n tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn r\u00f5 r\u00e0ng cho c\u00e1c x\u01b0\u1edfng c\u00f3 s\u1ea3n l\u01b0\u1ee3ng \u0111a d\u1ea1ng, kh\u1ed1i l\u01b0\u1ee3ng th\u1ea5p \u2014 n\u01a1i th\u1eddi gian chu k\u1ef3, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c s\u1ea1ch l\u00e0 nh\u1eefng y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c.<\/p>\n\n\n\n Truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a qu\u00e1 tr\u00ecnh u\u1ed1n kh\u00ed ch\u00ednh x\u00e1c b\u1eb1ng c\u00e1ch x\u1eed l\u00fd \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u1eadt li\u1ec7u (springback) theo th\u1eddi gian th\u1ef1c thay v\u00ec th\u1eed nghi\u1ec7m l\u1eb7p l\u1ea1i. Ph\u1ea3n h\u1ed3i servo v\u00f2ng k\u00edn cho ph\u00e9p m\u00e1y c\u1ea3m nh\u1eadn l\u1ef1c c\u1ea3n v\u1eadt li\u1ec7u v\u00e0 t\u1ef1 \u0111\u1ed9ng b\u00f9 tr\u1eeb \u2014 th\u01b0\u1eddng u\u1ed1n qu\u00e1 2\u20133\u00b0 v\u1edbi v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao m\u00e0 kh\u00f4ng c\u1ea7n th\u1eed g\u00f3c ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh th\u1ee7 c\u00f4ng.<\/p>\n\n\n\n \u01afu \u0111i\u1ec3m n\u00e0y th\u1ec3 hi\u1ec7n r\u00f5 nh\u1ea5t tr\u00ean t\u1ea5m m\u1ecfng (d\u01b0\u1edbi 0.25 inch), n\u01a1i u\u1ed1n kh\u00ed d\u1ef1a v\u00e0o ch\u00e0y n\u1ed5i. C\u00e1c th\u01b0\u1edbc vernier ho\u1eb7c th\u01b0\u1edbc CNC t\u00edch h\u1ee3p trong ch\u00e0y \u0111\u1ed3ng b\u1ed9 h\u00f3a v\u1ecb tr\u00ed t\u1edbi \u00b10.1\u00b0, gi\u00fap m\u00e1y ch\u1ea5n servo-\u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i r\u00f5 r\u1ec7t so v\u1edbi m\u00e1y th\u1ee7y l\u1ef1c trong c\u00f4ng vi\u1ec7c t\u1ea1o m\u1eabu v\u00e0 s\u1ea3n xu\u1ea5t ng\u1eafn h\u1ea1n, n\u01a1i th\u1eddi gian thi\u1ebft l\u1eadp \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i t\u1ed1c \u0111\u1ed9 t\u1ea1o h\u00ecnh \u2014 l\u00e0 y\u1ebfu t\u1ed1 gi\u1edbi h\u1ea1n ch\u1ee7 \u0111\u1ea1o.<\/p>\n\n\n\n Tuy nhi\u00ean, c\u00f4ng ngh\u1ec7 servo-\u0111i\u1ec7n c\u00f3 m\u1ed9t gi\u1edbi h\u1ea1n r\u00f5 r\u00e0ng. Th\u00e9p kh\u00f4ng g\u1ec9 d\u00e0y \u2014 \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c k\u00edch th\u01b0\u1edbc tr\u00ean 0.187 inch (4.7 mm) \u2014 l\u00e0 n\u01a1i nh\u1eefng h\u1ec7 th\u1ed1ng n\u00e0y b\u1eaft \u0111\u1ea7u g\u1eb7p kh\u00f3 kh\u0103n. M\u00f4-men xo\u1eafn c\u1ee7a servo th\u01b0\u1eddng ch\u1ec9 \u0111\u1ea1t t\u1ed1i \u0111a kho\u1ea3ng 300 t\u1ea5n; v\u01b0\u1ee3t ng\u01b0\u1ee1ng \u0111\u00f3 c\u00f3 nguy c\u01a1 l\u00e0m qu\u00e1 nhi\u1ec7t \u0111\u1ed9ng c\u01a1 v\u00e0 khi\u1ebfn ch\u00e0y d\u1eebng l\u1ea1i kh\u00f4ng th\u1ec3 xuy\u00ean qua v\u1eadt li\u1ec7u.<\/p>\n\n\n\n Tr\u00ean th\u00e9p kh\u00f4ng g\u1ec9 304 ho\u1eb7c 316 c\u00f3 \u0111\u1ed9 d\u00e0y h\u01a1n 10 mm, l\u1ef1c duy tr\u00ec c\u1ea7n thi\u1ebft \u0111\u1ec3 ho\u00e0n t\u1ea5t vi\u1ec7c u\u1ed1n c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng c\u1ee7a b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n, d\u1eabn t\u1edbi bi\u1ebfn d\u1ea1ng v\u1eadt li\u1ec7u, n\u1ee9t m\u00e9p v\u00e0 h\u00ecnh d\u1ea1ng ch\u01b0a ho\u00e0n ch\u1ec9nh. C\u00e1c x\u01b0\u1edfng c\u1ed1 \u00e9p phanh servo \u0111i\u1ec7n v\u00e0o ph\u1ea1m vi n\u00e0y th\u01b0\u1eddng th\u1ea5y t\u1ef7 l\u1ec7 ph\u1ebf ph\u1ea9m t\u0103ng 15\u201320\u202f% khi u\u1ed1n c\u1ea5u ki\u1ec7n. Trong c\u00e1c \u1ee9ng d\u1ee5ng th\u00e9p kh\u00f4ng g\u1ec9 t\u1ea5m d\u00e0y, hi\u1ec7u su\u1ea5t \u0111\u1ecbnh ngh\u0129a c\u1ee7a truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n tr\u1edf th\u00e0nh m\u1ed9t g\u00e1nh n\u1eb7ng, v\u00e0 s\u1ee9c m\u1ea1nh li\u00ean t\u1ee5c, th\u00f4 b\u1ea1o c\u1ee7a th\u1ee7y l\u1ef1c l\u00e0 gi\u1ea3i ph\u00e1p duy nh\u1ea5t kh\u1ea3 thi.<\/p>\n\n\n\n Phanh \u00e9p lai n\u1eb1m t\u1ea1i giao \u0111i\u1ec3m gi\u1eefa \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a servo v\u00e0 l\u1ef1c c\u1ee7a th\u1ee7y l\u1ef1c. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p chuy\u1ec3n \u0111\u1ed9ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng servo v\u1edbi c\u00e1c b\u1ed9 t\u0103ng \u00e1p th\u1ee7y l\u1ef1c t\u1ea1o ra \u00e1p su\u1ea5t ch\u1ec9 khi c\u1ea7n, nh\u1eefng h\u1ec7 th\u1ed1ng n\u00e0y gi\u1ea3m sinh nhi\u1ec7t kho\u1ea3ng 80\u202f% v\u00e0 gi\u1ea3m m\u1ea1nh l\u01b0\u1ee3ng d\u1ea7u so v\u1edbi m\u00e1y th\u1ee7y l\u1ef1c truy\u1ec1n th\u1ed1ng, trong khi v\u1eabn cung c\u1ea5p l\u1ef1c \u00e9p c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi cao.<\/p>\n\n\n\n B\u01a1m servo ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng khi ch\u00e0y di chuy\u1ec3n, mang l\u1ea1i s\u1ef1 tinh t\u1ebf c\u1ee7a m\u00e1y \u0111i\u1ec7n\u2014ti\u00eau th\u1ee5 \u00edt n\u0103ng l\u01b0\u1ee3ng v\u00e0 v\u1eadn h\u00e0nh s\u1ea1ch\u2014nh\u01b0ng v\u1eabn cung c\u1ea5p l\u1ef1c m\u1ea1nh c\u1ea7n cho c\u00f4ng vi\u1ec7c tr\u00ean t\u1ea5m 1.000+ t\u1ea5n. D\u00f9 \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u cao h\u01a1n, h\u1ec7 th\u1ed1ng lai c\u00e2n b\u1eb1ng t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd tr\u00ean nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u v\u00e0 cho ph\u00e9p thay khu\u00f4n nhanh h\u01a1n t\u1edbi 25\u202f% nh\u1edd k\u1eb9p t\u1ef1 \u0111\u1ed9ng. K\u1ebft qu\u1ea3 l\u00e0 s\u1ee9c m\u1ea1nh th\u1ee7y l\u1ef1c th\u1eadt s\u1ef1 m\u00e0 kh\u00f4ng ph\u1ea3i ch\u1ecbu b\u1ea3o tr\u00ec th\u01b0\u1eddng xuy\u00ean hay r\u1eafc r\u1ed1i tr\u00e0n d\u1ea7u.<\/p>\n\n\n\n \u1ede \u0111\u1ea7u \u0111\u1ed1i l\u1eadp c\u1ee7a ph\u1ed5 n\u1eb1m phanh \u00e9p c\u01a1 kh\u00ed. \u0110\u01b0\u1ee3c truy\u1ec1n \u0111\u1ed9ng b\u1eb1ng b\u00e1nh \u0111\u00e0 v\u00e0 ly h\u1ee3p, nh\u1eefng m\u00e1y n\u00e0y cho t\u1ed1c \u0111\u1ed9 c\u1ef1c cao\u2014t\u1edbi 500 nh\u1ecbp\/ph\u00fat\u2014khi\u1ebfn ch\u00fang hi\u1ec7u qu\u1ea3 cho c\u00e1c c\u00f4ng vi\u1ec7c l\u1eb7p l\u1ea1i cao nh\u01b0 \u0111\u1ed9t l\u1ed7 ho\u1eb7c \u00e9p \u0111\u01a1n gi\u1ea3n. Nh\u01b0ng t\u1ed1c \u0111\u1ed9 \u0111\u00f3 mang theo c\u00e1i gi\u00e1: phanh c\u01a1 kh\u00ed ho\u00e0n to\u00e0n kh\u00f4ng dung th\u1ee9 cho c\u00e1c k\u1ef9 thu\u1eadt ch\u1ebf t\u1ea1o hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n Phanh c\u01a1 kh\u00ed v\u1eadn h\u00e0nh theo h\u00e0nh tr\u00ecnh c\u1ed1 \u0111\u1ecbnh, ho\u00e0n to\u00e0n b\u1ecf qua hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e0n h\u1ed3i ng\u01b0\u1ee3c. \u0110i\u1ec1u n\u00e0y bu\u1ed9c ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i u\u1ed1n ch\u1ea1m \u0111\u00e1y, m\u1ed9t th\u1ef1c h\u00e0nh c\u00f3 th\u1ec3 l\u00e0m v\u1ee1 khu\u00f4n khi g\u1eb7p c\u01b0\u1eddng \u0111\u1ed9 k\u00e9o kh\u00e1c nhau c\u1ee7a c\u00e1c h\u1ee3p kim hi\u1ec7n \u0111\u1ea1i. Khi b\u00e1nh \u0111\u00e0 \u0111\u00e3 v\u00e0o v\u1ecb tr\u00ed, thi\u1ebft l\u1eadp b\u1ecb kh\u00f3a\u2014l\u00fd t\u01b0\u1edfng cho s\u1ea3n l\u01b0\u1ee3ng l\u1edbn th\u00e9p m\u1ec1m, nh\u01b0ng ti\u1ec1m \u1ea9n nguy hi\u1ec3m cho quy tr\u00ecnh CNC. Kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n \u0111i\u1ec1u ch\u1ec9nh nh\u1ecf \u0111\u1ec3 s\u1eeda g\u00f3c, ch\u1ec9 c\u1ea7n l\u1ec7ch 1\u00b0 c\u0169ng c\u00f3 th\u1ec3 bi\u1ebfn c\u1ea3 l\u00f4 th\u00e0nh ph\u1ebf ph\u1ea9m. T\u1ec7 h\u01a1n n\u1eefa, nhi\u1ec1u m\u00e1y c\u1ed5 thi\u1ebfu h\u1ec7 th\u1ed1ng \u0111\u1ed9i trung t\u00e2m, khi\u1ebfn c\u00e1c chi ti\u1ebft d\u00e0i b\u1ecb \u201ccong\u201d ho\u1eb7c v\u00f5ng \u1edf gi\u1eefa. Trong x\u01b0\u1edfng ch\u00fa tr\u1ecdng \u0111\u1ed9 ch\u00ednh x\u00e1c ng\u00e0y nay, phanh c\u01a1 kh\u00ed kh\u00f4ng c\u00f2n l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u00e0 l\u00e0 m\u1ed9t t\u00e0n d\u01b0 nguy hi\u1ec3m.<\/p>\n\n\n\n Ph\u1ea7n l\u1edbn ng\u00e0nh c\u00f4ng nghi\u1ec7p xem vi\u1ec7c ch\u1ecdn m\u00e1y v\u00e0 ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n nh\u01b0 hai l\u1ef1a ch\u1ecdn \u0111\u1ed9c l\u1eadp\u2014nh\u01b0 th\u1ec3 ph\u1ea7n c\u1ee9ng v\u00e0 k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 t\u00f9y \u00fd k\u1ebft h\u1ee3p. \u0110\u00e2y l\u00e0 m\u1ed9t ng\u1ed9 nh\u1eadn c\u01a1 b\u1ea3n. V\u1eadt l\u00fd c\u1ee7a m\u00e1y\u2014\u0111\u1eb7c bi\u1ec7t l\u00e0 h\u1ec7 d\u1eabn \u0111\u1ed9ng v\u00e0 \u0111\u1ed9 c\u1ee9ng khung\u2014quy\u1ebft \u0111\u1ecbnh nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n n\u00e0o kh\u1ea3 thi v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc v\u00e0 ph\u01b0\u01a1ng ph\u00e1p n\u00e0o s\u1ebd ch\u1eafc ch\u1eafn t\u1ea1o ra ph\u1ebf ph\u1ea9m. B\u1ea1n kh\u00f4ng ch\u1ecdn u\u1ed1n ch\u1ea1m \u0111\u00e1y tr\u00ean phanh c\u01a1 kh\u00ed c\u1ed5; ch\u00ednh m\u00e1y \u00e9p bu\u1ed9c b\u1ea1n ph\u1ea3i l\u00e0m v\u1eady.<\/p>\n\n\n\n Hi\u1ec3u \u0111\u01b0\u1ee3c ma tr\u1eadn t\u01b0\u01a1ng th\u00edch n\u00e0y l\u00e0 ranh gi\u1edbi gi\u1eefa m\u1ed9t \u0111\u1ee3t s\u1ea3n xu\u1ea5t c\u00f3 l\u00e3i v\u00e0 m\u1ed9t th\u00f9ng \u0111\u1ea7y h\u00e0ng l\u00e0m l\u1ea1i. Khi m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p u\u1ed1n b\u1ecb \u00e9p d\u00f9ng tr\u00ean m\u00e1y kh\u00f4ng \u0111\u1ee7 kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t l\u1ef1c \u00e9p ho\u1eb7c \u0111\u1ed9 l\u1eb7p l\u1ea1i, b\u1ea1n kh\u00f4ng ch\u1ec9 \u0111ang ch\u1ed1ng l\u1ea1i v\u1eadt li\u1ec7u\u2014m\u00e0 c\u00f2n ch\u1ed1ng l\u1ea1i gi\u1edbi h\u1ea1n c\u01a1 h\u1ecdc c\u01a1 b\u1ea3n c\u1ee7a b\u1ea3n th\u00e2n ch\u00e0y \u00e9p.<\/p>\n\n\n\n L\u00fd do c\u01a1 b\u1ea3n khi\u1ebfn phanh \u00e9p c\u01a1 kh\u00ed c\u1ed5 v\u1eadt kh\u00f3 th\u1ef1c hi\u1ec7n u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y \u1ed5n \u0111\u1ecbnh l\u00e0 do kh\u1ea3 n\u0103ng \u0111\u1ed3ng b\u1ed9 k\u00e9m c\u1ee7a ch\u00e0y \u00e9p. Kh\u00f4ng gi\u1ed1ng m\u00e1y CNC hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng ph\u1ea3n h\u1ed3i servo \u0111\u1ec3 li\u00ean t\u1ee5c theo d\u00f5i v\u00e0 hi\u1ec7u ch\u1ec9nh v\u1ecb tr\u00ed, phanh c\u01a1 kh\u00ed c\u0169 ph\u1ee5 thu\u1ed9c v\u00e0o c\u01a1 c\u1ea5u b\u00e1nh \u0111\u00e0 \u2013 ly h\u1ee3p. Thi\u1ebft k\u1ebf n\u00e0y cho ph\u00e9p ch\u00e0y \u00e9p \u201ctr\u00f4i\u201d, d\u1eabn \u0111\u1ebfn sai l\u1ec7ch tr\u1ee5c Y1\/Y2 t\u1edbi 0,05\u202fmm m\u1ed7i nh\u1ecbp.<\/p>\n\n\n\n Trong u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y\u2014n\u01a1i g\u00f3c cu\u1ed1i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ho\u00e0n to\u00e0n b\u1eb1ng \u0111\u1ed9 s\u00e2u xuy\u00ean c\u1ee7a ch\u00e0y\u2014sai l\u1ec7ch 0,05\u202fmm l\u00e0 th\u1ea3m h\u1ecda. Trong \u0111\u1ee3t s\u1ea3n xu\u1ea5t l\u1edbn v\u1edbi th\u00e9p m\u1ec1m d\u00e0y 3\u202fmm, m\u1ee9c tr\u00f4i n\u00e0y \u0111\u1ee7 \u0111\u1ec3 l\u1ec7ch g\u00f3c u\u1ed1n v\u01b0\u1ee3t ngo\u00e0i dung sai, l\u00e0m t\u1ef7 l\u1ec7 ph\u1ebf ph\u1ea9m t\u0103ng t\u1edbi 25\u201340\u202f%. Kh\u00f4ng c\u00f3 m\u1ee9c tinh ch\u1ec9nh l\u1eadp tr\u00ecnh n\u00e0o c\u00f3 th\u1ec3 b\u00f9 cho s\u1ef1 b\u1ea5t \u1ed5n c\u01a1 h\u1ecdc n\u00e0y.<\/p>\n\n\n\n Do \u0111\u00f3, nh\u1eefng m\u00e1y n\u00e0y th\u1ef1c t\u1ebf bu\u1ed9c ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i u\u1ed1n ch\u1ea1m \u0111\u00e1y<\/strong>. B\u1eb1ng c\u00e1ch \u0111\u1ea9y ch\u00e0y v\u00e0o h\u1ebft khu\u00f4n V, \u0111\u1ed9 s\u00e2u ch\u00e0y kh\u00f4ng c\u00f2n l\u00e0 bi\u1ebfn s\u1ed1\u2014b\u1ea3n th\u00e2n khu\u00f4n tr\u1edf th\u00e0nh \u0111i\u1ec3m d\u1eebng c\u01a1 h\u1ecdc c\u1ee9ng. V\u1eadt li\u1ec7u b\u1ecb \u00e9p bu\u1ed9c ph\u1ea3i \u0111\u1ecbnh d\u1ea1ng b\u1ea5t k\u1ec3 ch\u00e0y \u00e9p d\u1eebng \u1edf \u0111\u00e2u. D\u00f9 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u1ed5n \u0111\u1ecbnh g\u00f3c u\u1ed1n, n\u00f3 c\u00f3 c\u00e1i gi\u00e1 \u0111\u1eaft: y\u00eau c\u1ea7u l\u1ef1c \u00e9p th\u01b0\u1eddng t\u0103ng g\u1ea5p 2\u20133 l\u1ea7n so v\u1edbi u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y. C\u00e1ch l\u00e0m th\u00f4 b\u1ea1o n\u00e0y gi\u1ea3m \u0111\u1ed9 l\u1ec7ch g\u00f3c nh\u01b0ng l\u00e0m m\u00f2n khu\u00f4n nhanh, gi\u1ea3m tu\u1ed5i th\u1ecd d\u1ee5ng c\u1ee5 t\u1edbi 50\u202f% khi l\u00e0m vi\u1ec7c v\u1edbi v\u1eadt li\u1ec7u m\u00e0i m\u00f2n nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9.<\/p>\n\n\n\n Tr\u00e1nh Th\u1ea3m H\u1ecda:<\/strong> Ki\u1ec3m tra \u0111\u1ed9 song song c\u1ee7a ch\u00e0y \u00e9p m\u1ed7i ng\u00e0y. N\u1ebfu sai l\u1ec7ch v\u01b0\u1ee3t qu\u00e1 0,03\u202fmm, kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ed1 u\u1ed1n kh\u00f4ng ch\u1ea1m \u0111\u00e1y c\u00e1c chi ti\u1ebft ch\u00ednh x\u00e1c. H\u00e3y chuy\u1ec3n sang u\u1ed1n ch\u1ea1m \u0111\u00e1y \u0111\u1ec3 c\u1ed1 \u0111\u1ecbnh g\u00f3c b\u1eb1ng c\u01a1 h\u1ecdc, ho\u1eb7c n\u00e2ng c\u1ea5p l\u00ean h\u1ec7 th\u1ed1ng \u0111\u1ed3ng b\u1ed9 th\u1ee7y l\u1ef1c c\u00f3 \u0111\u1ed9 l\u1eb7p l\u1ea1i 0,01\u202fmm.<\/p>\n\n\n\n Khi m\u1ed9t l\u1ef1c l\u1edbn h\u01a1n 100 t\u1ea5n \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng tr\u00ean m\u1ed9t chi\u1ec1u d\u00e0i b\u00e0n l\u1edbn h\u01a1n 2 m\u00e9t, \u0111\u1ed9 v\u00f5ng khung l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi. Thanh \u00e9p (ram) u\u1ed1n cong l\u00ean \u1edf gi\u1eefa trong khi b\u00e0n m\u00e1y v\u00f5ng xu\u1ed1ng. Tr\u00ean c\u00e1c m\u00e1y th\u1ee7y l\u1ef1c kh\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng b\u00f9 v\u00f5ng (crowning), \u0111\u1ed9 v\u00f5ng n\u00e0y \u2014 th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng t\u1eeb 0,02 mm \u0111\u1ebfn 0,1 mm m\u1ed7i m\u00e9t \u2014 khi\u1ebfn cho dao ch\u1ea5n (punch) \u0111i s\u00e2u h\u01a1n \u1edf hai \u0111\u1ea7u chi ti\u1ebft so v\u1edbi ph\u1ea7n gi\u1eefa.<\/p>\n\n\n\n K\u1ebft qu\u1ea3 l\u00e0 hi\u1ec7u \u1ee9ng \u201cxu\u1ed3ng\u201d quen thu\u1ed9c, trong \u0111\u00f3 ph\u1ea7n gi\u1eefa c\u1ee7a \u0111\u01b0\u1eddng g\u1ea5p d\u00e0i b\u1ecb g\u1ea5p thi\u1ebfu t\u1eeb 2\u20135\u00b0 so v\u1edbi hai \u0111\u1ea7u. C\u00e1c m\u00e1y ch\u1ea5n servo\u2011\u0111i\u1ec7n hi\u1ec7n \u0111\u1ea1i kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 n\u00e0y nh\u1edd khung si\u00eau c\u1ee9ng \u0111\u01b0\u1ee3c gia c\u00f4ng v\u1edbi \u0111\u1ed9 ph\u1eb3ng b\u00e0n\u2011ram \u22640,02 mm, duy tr\u00ec dung sai g\u00f3c ch\u1eb7t ch\u1ebd tr\u00ean chi\u1ec1u d\u00e0i 4 m\u00e9t m\u00e0 kh\u00f4ng c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh. Tuy nhi\u00ean, c\u00e1c m\u00e1y ch\u1ea5n th\u1ee7y l\u1ef1c ti\u00eau chu\u1ea9n l\u1ea1i thi\u1ebfu \u0111\u1ed9 c\u1ee9ng k\u1ebft c\u1ea5u v\u1ed1n c\u00f3 n\u00e0y v\u00e0 ph\u1ea3i d\u1ef1a v\u00e0o h\u1ec7 th\u1ed1ng b\u00f9 v\u00f5ng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n\n\n\n Kh\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng b\u00f9 v\u00f5ng th\u1ee7y l\u1ef1c CNC \u2014 h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh c\u00e1c \u0111o\u1ea1n ram theo v\u00f9ng 50\u2013100 mm \u2014 ng\u01b0\u1eddi v\u1eadn h\u00e0nh tr\u00ean c\u00e1c m\u00e1y \u0111\u1eddi c\u0169 bu\u1ed9c ph\u1ea3i d\u00f9ng c\u00e1ch t\u1ea1m th\u1eddi. H\u1ecd ho\u1eb7c ch\u00eam d\u1ee5ng c\u1ee5 ho\u1eb7c chuy\u1ec3n sang \u00e9p d\u1eadp (coining)<\/strong>. \u00c9p d\u1eadp s\u1eed d\u1ee5ng l\u1ef1c c\u1ef1c l\u1edbn \u0111\u1ec3 \u00e9p m\u1ecfng v\u1eadt li\u1ec7u v\u00e0 g\u00e2y bi\u1ebfn d\u1ea1ng d\u1ebbo ho\u00e0n to\u00e0n, qua \u0111\u00f3 kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c \u0111\u1ed9 v\u00f5ng khung. C\u00e1i gi\u00e1 ph\u1ea3i tr\u1ea3 l\u00e0 cao: th\u1eddi gian c\u00e0i \u0111\u1eb7t g\u1ea5p ba, y\u00eau c\u1ea7u l\u1ef1c ch\u1ea5n t\u0103ng v\u1ecdt v\u00e0 m\u00f2n d\u1ee5ng c\u1ee5 nhanh h\u01a1n. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c x\u01b0\u1edfng n\u00e2ng c\u1ea5p m\u00e1y v\u1edbi xy\u2011lanh b\u00f9 v\u00f5ng k\u1ebft n\u1ed1i v\u00f2ng ph\u1ea3n h\u1ed3i CNC th\u01b0\u1eddng c\u1eaft gi\u1ea3m ph\u1ebf ph\u1ea9m do \u201chi\u1ec7u \u1ee9ng xu\u1ed3ng\u201d t\u1eeb kho\u1ea3ng 15% xu\u1ed1ng ch\u1ec9 c\u00f2n 2% khi ch\u1ea5n th\u00e9p t\u1ea5m d\u00e0y 12 mm.<\/p>\n\n\n\n Tr\u00e1nh Th\u1ea3m H\u1ecda:<\/strong> V\u1edbi m\u1ecdi chi ti\u1ebft d\u00e0i h\u01a1n 1,5 l\u1ea7n kho\u1ea3ng c\u00e1ch gi\u1eefa hai khung b\u00ean, h\u00e3y x\u00e1c nh\u1eadn r\u1eb1ng h\u00e0nh tr\u00ecnh b\u00f9 v\u00f5ng kh\u1ea3 d\u1ee5ng ph\u00f9 h\u1ee3p v\u1edbi l\u1ef1c y\u00eau c\u1ea7u. V\u1eadn h\u00e0nh m\u1ed9t m\u00e1y ch\u1ea5n \u0111\u1eddi c\u0169 m\u00e0 kh\u00f4ng c\u00f3 b\u00f9 v\u00f5ng g\u1ea7n nh\u01b0 ch\u1eafc ch\u1eafn s\u1ebd g\u00e2y \u201chi\u1ec7u \u1ee9ng xu\u1ed3ng\u201d tr\u00ean t\u1edbi 70% chi ti\u1ebft d\u00e0i \u2014 tr\u1eeb khi b\u1ea1n ph\u1ea3i d\u00f9ng \u00e9p d\u1eadp.<\/p>\n\n\n\n \u0110\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ch\u1ea5n gi\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ki\u1ec3m so\u00e1t hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i (springback) \u2014 xu h\u01b0\u1edbng kim lo\u1ea1i tr\u1edf l\u1ea1i h\u00ecnh d\u1ea1ng ban \u0111\u1ea7u sau khi b\u1ecf l\u1ef1c. Th\u00e9p kh\u00f4ng g\u1ec9 th\u01b0\u1eddng \u0111\u00e0n h\u1ed3i tr\u1edf l\u1ea1i 3\u20135\u00b0, trong khi th\u00e9p m\u1ec1m ch\u1ec9 1\u20132\u00b0. \u0110\u1ec3 \u0111\u1ea1t g\u00f3c 90\u00b0 th\u1eadt, m\u00e1y ph\u1ea3i g\u1ea5p qu\u00e1 m\u1ed9t g\u00f3c ch\u00ednh x\u00e1c (v\u00ed d\u1ee5 86\u00b0 ho\u1eb7c 88\u00b0) v\u00e0 gi\u1eef ram \u1edf \u0111i\u1ec3m ch\u1ebft d\u01b0\u1edbi trong m\u1ed9t kho\u1ea3ng d\u1eebng c\u00f3 ki\u1ec3m so\u00e1t \u0111\u1ec3 gi\u1ea3i ph\u00f3ng \u1ee9ng su\u1ea5t b\u00ean trong.<\/p>\n\n\n\n C\u00e1c m\u00e1y ch\u1ea5n c\u01a1 kh\u00ed \u0111\u1eddi c\u0169 \u0111\u01a1n gi\u1ea3n l\u00e0 kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n chu tr\u00ecnh n\u00e0y. C\u00fa ch\u1ea5n c\u1ee7a ch\u00fang do ly h\u1ee3p \u0111i\u1ec1u khi\u1ec3n, t\u1ea1o ra l\u1ef1c dao \u0111\u1ed9ng \u00b115%. V\u00ec ram \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ed9ng b\u1eb1ng qu\u00e1n t\u00ednh b\u00e1nh \u0111\u00e0, n\u00f3 kh\u00f4ng th\u1ec3 t\u1ea1m d\u1eebng gi\u1eefa h\u00e0nh tr\u00ecnh \u0111\u1ec3 t\u1ea1o kho\u1ea3ng d\u1eebng ki\u1ec3m so\u00e1t, c\u0169ng kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 ch\u00ednh x\u00e1c v\u1ecb tr\u00ed 0,01 mm c\u1ea7n \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec1u \u0111\u1eb7n m\u1ed9t g\u00f3c g\u1ea5p qu\u00e1 4\u00b0 ch\u00ednh x\u00e1c.<\/p>\n\n\n\n H\u1eadu qu\u1ea3 l\u00e0 kh\u00f4ng c\u00f3 dung sai n\u00e0o cho bi\u1ebfn thi\u00ean v\u1eadt li\u1ec7u. C\u1ed1 g\u1eafng ch\u1ea5n gi\u00f3 th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao tr\u00ean m\u00e1y c\u01a1 kh\u00ed th\u1eadp ni\u00ean 1970 ch\u1eb3ng kh\u00e1c g\u00ec \u0111o\u00e1n m\u00f2 c\u00f3 c\u01a1 s\u1edf. H\u1ed3 s\u01a1 m\u00f2n d\u1ee5ng c\u1ee5 cho th\u1ea5y c\u00e1c x\u01b0\u1edfng n\u00e0y lo\u1ea1i b\u1ecf kho\u1ea3ng 30% chi ti\u1ebft nhi\u1ec1u h\u01a1n so v\u1edbi c\u00e1c m\u00e1y th\u1ee7y l\u1ef1c, ch\u1ee7 y\u1ebfu do \u0111\u1ed9 v\u00f5ng c\u1ee7a dao ch\u1ea5n g\u00e2y b\u1edfi sai l\u1ec7ch song song gi\u1eefa ram v\u00e0 b\u00e0n.<\/p>\n\n\n\n Tr\u00e1nh Th\u1ea3m H\u1ecda:<\/strong> N\u1ebfu b\u1ea1n \u0111ang v\u1eadn h\u00e0nh m\u00e1y ch\u1ea5n c\u01a1 kh\u00ed c\u0169, h\u00e3y gi\u1edbi h\u1ea1n ch\u1ea5n gi\u00f3 \u1edf th\u00e9p m\u1ec1m d\u01b0\u1edbi 2 mm. B\u1ea5t k\u1ef3 v\u1eadt li\u1ec7u n\u00e0o d\u00e0y ho\u1eb7c c\u1ee9ng h\u01a1n \u0111\u1ec1u ph\u1ea3i d\u00f9ng ch\u1ea5n \u0111\u00e1y ho\u1eb7c \u00e9p d\u1eadp. Kh\u00f4ng k\u1ef9 n\u0103ng n\u00e0o c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 ng\u0103n m\u1ed9t g\u00f3c ch\u1ea5n gi\u00f3 90\u00b0 danh ngh\u0129a b\u1eadt l\u1ea1i th\u00e0nh 92\u00b0 tr\u00ean c\u00e1c m\u00e1y n\u00e0y.<\/p>\n\n\n\n Khi xem b\u00e1o gi\u00e1, h\u00e3y b\u1ecf qua k\u00edch th\u01b0\u1edbc m\u00e0n h\u00ecnh m\u00e0 t\u1eadp trung v\u00e0o vi\u1ec7c \u0111\u00f4i tay ng\u01b0\u1eddi v\u1eadn h\u00e0nh th\u1ef1c s\u1ef1 ph\u1ea3i l\u00e0m g\u00ec. Tr\u00ean m\u00e1y NC, ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i gi\u00e1m s\u00e1t li\u00ean t\u1ee5c \u2014 n\u1ea1p t\u1ea5m kim lo\u1ea1i, r\u1ed3i th\u1ee7 c\u00f4ng tinh ch\u1ec9nh g\u00f3c, k\u00edch th\u01b0\u1edbc v\u00e0 c\u0103n ch\u1ec9nh sau m\u1ed7i v\u00e0i l\u1ea7n ch\u1ea5n. \u0110\u1ed9 s\u00e2u h\u00e0nh tr\u00ecnh \u0111\u01b0\u1ee3c \u0111\u1eb7t theo \u201cc\u1ea3m gi\u00e1c\u201d, kh\u00f4ng ph\u1ea3i ph\u1ea3n h\u1ed3i, do \u0111\u00f3 th\u01b0\u1eddng sai l\u1ec7ch \u00b11\u00b0\u20133\u00b0. V\u1edbi c\u00e1c c\u00f4ng vi\u1ec7c d\u00f9ng th\u00e9p kh\u00f4ng g\u1ec9 ho\u1eb7c th\u00e9p c\u01b0\u1eddng \u0111\u1ed9 cao, vi\u1ec7c \u01b0\u1edbc l\u01b0\u1ee3ng n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra 20\u201330% ph\u1ebf ph\u1ea9m c\u1ee7a l\u00f4 h\u00e0ng.<\/p>\n\n\n\n CNC bi\u1ebfn vai tr\u00f2 t\u1eeb ng\u01b0\u1eddi gi\u00e1m s\u00e1t tr\u1ef1c ti\u1ebfp th\u00e0nh ng\u01b0\u1eddi \u0111i\u1ec1u ph\u1ed1i. N\u00e2ng c\u1ea5p th\u1ef1c s\u1ef1 kh\u00f4ng n\u1eb1m \u1edf m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng \u2014 m\u00e0 l\u00e0 \u1edf tr\u1ee5c Y1 v\u00e0 Y2 \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a. C\u00e1c backgauge NC c\u00f3 th\u1ec3 di chuy\u1ec3n \u1edf t\u1ed1c \u0111\u1ed9 100 mm\/s, nh\u01b0ng t\u1ea3i l\u1ec7ch t\u00e2m v\u1eabn c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh tay, khi\u1ebfn thanh xo\u1eafn c\u01a1 h\u1ecdc bi\u1ebfn d\u1ea1ng d\u1ea7n sau v\u00e0i tr\u0103m chu k\u1ef3. M\u1ed9t m\u00e1y ch\u1ea5n CNC s\u1eed d\u1ee5ng b\u1ed9 m\u00e3 h\u00f3a tuy\u1ebfn t\u00ednh \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh song song theo th\u1eddi gian th\u1ef1c, ch\u1ea1y \u1edf t\u1ed1c \u0111\u1ed9 200\u2013400 mm\/s m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng. K\u1ebft qu\u1ea3: m\u1ed9t ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c m\u1eabu ph\u1ee9c t\u1ea1p m\u00e0 nh\u00f3m hai ng\u01b0\u1eddi NC kh\u00f4ng kham n\u1ed5i, gi\u1ea3m th\u1eddi gian c\u00e0i \u0111\u1eb7t t\u1eeb 30 ph\u00fat xu\u1ed1ng c\u00f2n kho\u1ea3ng n\u0103m ph\u00fat.<\/p>\n\n\n\n Nh\u00e2n vi\u00ean b\u00e1n h\u00e0ng th\u00edch tr\u00edch d\u1eabn l\u1ef1c c\u1ef1c \u0111\u1ea1i \u2014 \u201c100 t\u1ea5n\u201d \u2014 nh\u01b0 th\u1ec3 l\u00fac n\u00e0o c\u0169ng kh\u1ea3 d\u1ee5ng. Th\u1ef1c t\u1ebf kh\u00f4ng ph\u1ea3i v\u1eady. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 l\u1ef1c ch\u1ea5n hi\u1ec7u qu\u1ea3<\/em>: l\u1ef1c th\u1ef1c t\u1ebf t\u1ea1i \u0111i\u1ec3m gi\u1eefa \u0111\u01b0\u1eddng g\u1ea5p. Tr\u00ean c\u00e1c m\u00e1y NC, thanh xo\u1eafn c\u01a1 h\u1ecdc c\u00f3 th\u1ec3 m\u1ea5t 15\u201320% l\u1ef1c do u\u1ed1n cong d\u01b0\u1edbi t\u1ea3i c\u1ee5c b\u1ed9, ch\u1eb3ng h\u1ea1n t\u1ea3i l\u1ec7ch 60% tr\u00ean chi ti\u1ebft d\u00e0i 10 foot. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u1ea3i ch\u1ea5n qu\u00e1 m\u1ee9c \u0111\u1ec3 b\u00f9, khi\u1ebfn khu\u00f4n b\u1ecb n\u1ee9t v\u00e0 thanh xo\u1eafn b\u1ecb cong v\u0129nh vi\u1ec5n.<\/p>\n\n\n\n C\u00e1c h\u1ec7 th\u1ed1ng CNC gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1c van t\u1ef7 l\u1ec7, cung c\u1ea5p ch\u00ednh x\u00e1c l\u1ef1c \u00e9p c\u1ea7n thi\u1ebft theo th\u1eddi gian th\u1ef1c. Nh\u1eadp gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u\u2014v\u00ed d\u1ee5, 50 ksi cho th\u00e9p kh\u00f4ng g\u1ec9\u2014v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n s\u1ebd gi\u1edbi h\u1ea1n l\u1ef1c t\u1ea1i 80% \u0111\u1ec3 ng\u0103n tr\u00f4i tr\u1ee5c Y. \u0110\u00f3 ch\u00ednh l\u00e0 b\u1ea3n ch\u1ea5t c\u1ee7a quy tr\u00ecnh \u201cthi\u1ebft l\u1eadp m\u1ed9t l\u1ea7n v\u00e0 qu\u00ean \u0111i\u201d, \u0111i\u1ec1u m\u00e0 NC \u0111\u01a1n thu\u1ea7n kh\u00f4ng th\u1ec3 cung c\u1ea5p. N\u1ebfu ch\u1ec9 mua d\u1ef1a tr\u00ean c\u00f4ng su\u1ea5t c\u1ef1c \u0111\u1ea1i, b\u1ea1n \u0111ang tr\u1ea3 ti\u1ec1n cho s\u1ee9c m\u1ea1nh m\u00e0 kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng an to\u00e0n m\u00e0 kh\u00f4ng ph\u00e1 h\u1ee7y d\u1ee5ng c\u1ee5.<\/p>\n\n\n\n M\u1ed9t h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c CNC $150k s\u1ebd kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e0n h\u1ed3i sau u\u1ed1n (springback) khi gia c\u00f4ng th\u00e9p 4140 n\u1ebfu \u0111\u1ed9i ng\u0169 c\u1ee7a b\u1ea1n v\u1eabn \u0111ang th\u1ef1c hi\u1ec7n u\u1ed1n ch\u1ea1m \u0111\u00e1y m\u00e0 kh\u00f4ng kh\u00f3a ch\u1eb7t \u0111\u00fang khu\u00f4n V. \u0110\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ebfn t\u1eeb t\u00ednh to\u00e1n, kh\u00f4ng ph\u1ea3i t\u1eeb chi ti\u00eau cho thi\u1ebft b\u1ecb. Gi\u1edbi h\u1ea1n ch\u1ea3y c\u1ee7a v\u1eadt li\u1ec7u x\u00e1c \u0111\u1ecbnh m\u1ee9c u\u1ed1n v\u01b0\u1ee3t c\u1ea7n thi\u1ebft l\u00e0 2\u20135\u00b0, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00f4ng su\u1ea5t xy-lanh. Ng\u01b0\u1eddi v\u1eadn h\u00e0nh ch\u01b0a \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o th\u01b0\u1eddng \u0111o\u00e1n m\u00f2, ti\u00eau t\u1ed1n \u0111\u1ebfn m\u01b0\u1eddi l\u1ea7n th\u1eed m\u1ed7i l\u1ea7n thi\u1ebft l\u1eadp v\u00e0 g\u1ecdi \u0111\u00f3 l\u00e0 \u201cch\u1ec9nh m\u00e1y\u201d.\u201d<\/p>\n\n\n\n M\u1ed9t m\u00e1y u\u1ed1n CNC c\u00f3 th\u1ec3 l\u01b0u tr\u1eef 1.000 ch\u01b0\u01a1ng tr\u00ecnh, nh\u01b0ng n\u1ebfu chi\u1ebfn l\u01b0\u1ee3c u\u1ed1n c\u1ee7a b\u1ea1n b\u1ecf qua h\u1ec7 s\u1ed1 K\u2014th\u01b0\u1eddng l\u00e0 0,33\u20130,50 cho th\u00e9p m\u1ec1m v\u00e0 kho\u1ea3ng 0,45 cho th\u00e9p kh\u00f4ng g\u1ec9\u2014th\u00ec b\u1ea1n ch\u1ec9 \u0111ang t\u1ef1 \u0111\u1ed9ng h\u00f3a vi\u1ec7c t\u1ea1o ph\u1ebf ph\u1ea9m. Nh\u1eefng x\u01b0\u1edfng th\u1ef1c s\u1ef1 theo d\u00f5i d\u1eef li\u1ec7u t\u1ea1o h\u00ecnh m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n ph\u00e1t hi\u1ec7n ra r\u1eb1ng g\u1ea7n 80% \u201cl\u1ed7i m\u00e1y\u201d th\u1ef1c ra l\u00e0 do sai l\u1ec7ch chi\u1ebfn l\u01b0\u1ee3c. Kh\u00f4ng c\u00f3 \u0111\u00e0o t\u1ea1o \u0111\u00fang c\u00e1ch v\u1ec1 tr\u00e1nh t\u1ea3i m\u1ed9t ph\u1ea7n, ngay c\u1ea3 m\u1ed9t chi\u1ebfc m\u00e1y cao c\u1ea5p c\u0169ng s\u1ebd t\u1ea1o ra chi ti\u1ebft b\u1ecb xo\u1eafn v\u00e0 b\u1ecb lo\u1ea1i b\u1ecf.<\/p>\n\n\n\n B\u1ea1n kh\u00f4ng c\u1ea7n \u0111\u01a1n \u0111\u1eb7t h\u00e0ng m\u1edbi \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c ngay ng\u00e0y mai. H\u00e3y b\u1eaft \u0111\u1ea7u t\u1ea1i x\u01b0\u1edfng b\u1eb1ng c\u00e1ch ph\u00e2n lo\u1ea1i c\u00f4ng vi\u1ec7c d\u1ef1a theo nguy\u00ean l\u00fd v\u1eadt l\u00fd c\u1ee7a c\u00e1c m\u00e1y b\u1ea1n \u0111ang s\u1edf h\u1eefu. N\u1ebfu b\u1ea1n \u0111ang v\u1eadn h\u00e0nh m\u00e1y u\u1ed1n th\u1ee7y l\u1ef1c NC, h\u00e3y ng\u1eebng \u00e9p n\u00f3 th\u1ef1c hi\u1ec7n u\u1ed1n kh\u00f4ng kh\u00ed c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao tr\u00ean t\u1ea5m d\u00e0y\u2014\u0111\u00f3 \u0111\u01a1n gi\u1ea3n l\u00e0 \u1ee9ng d\u1ee5ng sai.<\/p>\n\n\n\n D\u00e0nh u\u1ed1n kh\u00f4ng kh\u00ed cho nh\u00f4m c\u00f3 \u0111\u1ed9 d\u00e0y d\u01b0\u1edbi 0,125 inch, n\u01a1i \u0111\u1ed9 u\u1ed1n v\u01b0\u1ee3t 3\u00b0 v\u00e0 ch\u00e0y n\u1ed5i c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c. Chuy\u1ec3n sang u\u1ed1n ch\u1ea1m \u0111\u00e1y cho b\u1ea5t k\u1ef3 t\u1ea5m n\u00e0o d\u00e0y h\u01a1n 0,25 inch. C\u00e1ch n\u00e0y tr\u00e1nh \u0111\u01b0\u1ee3c m\u1ee9c ti\u00eau th\u1ee5 l\u1ef1c g\u1ea5p ba l\u1ea7n c\u1ee7a u\u1ed1n \u0111\u1ed3ng (coining), c\u00f3 th\u1ec3 ph\u00e1 h\u1ee7y d\u1ee5ng c\u1ee5 ch\u1ec9 sau kho\u1ea3ng 200 chu k\u1ef3. \u201c\u0110\u1ed9 tr\u00f4i\u201d m\u00e0 ng\u01b0\u1eddi v\u1eadn h\u00e0nh ph\u00e0n n\u00e0n hi\u1ebfm khi l\u00e0 v\u1ea5n \u0111\u1ec1 th\u1ee7y l\u1ef1c; th\u00f4ng th\u01b0\u1eddng, \u0111\u00f3 l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a vi\u1ec7c y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng thanh xo\u1eafn ho\u1ea1t \u0111\u1ed9ng nh\u01b0 b\u1ed9 m\u00e3 h\u00f3a tuy\u1ebfn t\u00ednh. S\u1eeda ph\u01b0\u01a1ng ph\u00e1p, hi\u1ec7u su\u1ea5t m\u00e1y s\u1ebd t\u1ef1 c\u1ea3i thi\u1ec7n.<\/p>","protected":false},"excerpt":{"rendered":" Sai l\u1ea7m $500 khi\u1ebfn c\u00e1c c\u1eeda h\u00e0ng ph\u1ea3i t\u00ecm ki\u1ebfm tr\u00ean Google \u201cC\u00e1c lo\u1ea1i m\u00e1y ch\u1ea5n t\u00f4n\u201d \nB\u1ea1n \u0111o g\u00f3c th\u00e0nh ph\u1ea9m tr\u00ean m\u1ed9t chi ti\u1ebft inox 304: 88 \u0111\u1ed9. B\u1ea3n v\u1ebd y\u00eau c\u1ea7u 90. B\u1ea1n c\u1ed1 g\u1eafng u\u1ed1n th\u00eam m\u1ed9t l\u1ea7n n\u1eefa \u2014 v\u00e0 m\u00e9p b\u1ecb n\u1ee9t. Ch\u1ec9 m\u1ed9t chi ti\u1ebft b\u1ecb lo\u1ea1i b\u1ecf \u0111\u00f3 \u0111\u00e3 ti\u00eau t\u1ed1n $500 cho v\u1eadt li\u1ec7u v\u00e0 nh\u00e2n c\u00f4ng, ch\u01b0a k\u1ec3 \u0111\u1ebfn thi\u1ec7t h\u1ea1i th\u1ef1c s\u1ef1: m\u1ed9t l\u1ea7n giao h\u00e0ng b\u1ecb b\u1ecf l\u1ee1 [\u2026]<\/p>","protected":false},"author":3,"featured_media":708,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/comments?post=696"}],"version-history":[{"count":2,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/696\/revisions"}],"predecessor-version":[{"id":1118,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/posts\/696\/revisions\/1118"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media\/708"}],"wp:attachment":[{"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/media?parent=696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/categories?post=696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn-hawe.com\/vi\/wp-json\/wp\/v2\/tags?post=696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"M\u1ed1i](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2025\/12\/The-hidden-link-between-material-method-and-machine-that-no-one-explains_w1200.jpg\")
<\/figure>\n\n\n\nT\u1ea1i Sao \u201cC\u1ea3m Nh\u1eadn C\u1ee7a Ng\u01b0\u1eddi V\u1eadn H\u00e0nh\u201d Kh\u00f4ng C\u00f2n \u0110\u1ee7 \u0110\u1ec3 Ch\u1ed1ng L\u1ea1i \u0110\u1ed9 B\u1eadt L\u1ea1i<\/h3>\n\n\n\n
![\"T\u1ea1i](\"https:\/\/cn-hawe.com\/wp-content\/uploads\/2025\/12\/Why-operator-feel-is-no-longer-enough-to-combat-springback_w1200.jpg\")
<\/figure>\n\n\n\nPh\u1ea7n 1: C\u00e1c Ph\u01b0\u01a1ng Ph\u00e1p (H\u00e3y Ch\u1ecdn Chi\u1ebfn L\u01b0\u1ee3c Tr\u01b0\u1edbc Khi Ch\u1ecdn M\u00e1y)<\/h2>\n\n\n\n
U\u1ed1n H\u1edf: Nhanh, Linh Ho\u1ea1t V\u00e0 Kh\u00f3 Tha Th\u1ee9<\/h3>\n\n\n\n
T\u1ea1i sao g\u00f3c u\u1ed1n 90\u00b0 c\u1ee7a b\u1ea1n lu\u00f4n b\u1eadt l\u1ea1i th\u00e0nh 92\u00b0<\/h4>\n\n\n\n
S\u1ef1 \u0111\u00e1nh \u0111\u1ed5i: T\u1ea1i sao u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed \u0111\u00f2i h\u1ecfi h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n CNC m\u1ea1nh m\u1ebd h\u01a1n b\u1ea1n t\u01b0\u1edfng<\/h4>\n\n\n\n
Khi \u201cth\u1ea3 n\u1ed5i\u201d ch\u00e0y l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n duy nh\u1ea5t cho v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o cao<\/h4>\n\n\n\n
U\u1ed1n ch\u1ea1m \u0111\u00e1y: \u201cGi\u1ea3i ph\u00e1p trung gian\u201d m\u00e0 h\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng \u0111\u1ec1u hi\u1ec3u sai<\/h3>\n\n\n\n
T\u1ea1i sao u\u1ed1n ch\u1ea1m \u0111\u00e1y kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 \u201cu\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed v\u1edbi l\u1ef1c l\u1edbn h\u01a1n\u201d<\/h4>\n\n\n\n
Quy t\u1eafc khu\u00f4n ch\u1eef V: gi\u1ea3m \u0111\u00e0n h\u1ed3i nh\u1edd r\u00e0ng bu\u1ed9c h\u00ecnh h\u1ecdc<\/h4>\n\n\n\n
Khi u\u1ed1n ch\u1ea1m \u0111\u00e1y v\u01b0\u1ee3t tr\u1ed9i h\u01a1n u\u1ed1n b\u1eb1ng kh\u00f4ng kh\u00ed v\u1ec1 chi ph\u00ed\u2014kh\u00f4ng ch\u1ec9 v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h4>\n\n\n\n
U\u1ed1n d\u1eadp: \u201cGi\u1ea3i ph\u00e1p m\u1ea1nh tay\u201d cho \u0111\u1ed9 ch\u00ednh x\u00e1c tuy\u1ec7t \u0111\u1ed1i<\/h3>\n\n\n\n
\u0110i\u1ec1u g\u00ec th\u1ef1c s\u1ef1 x\u1ea3y ra v\u1edbi kim lo\u1ea1i \u1edf cu\u1ed1i h\u00e0nh tr\u00ecnh<\/h4>\n\n\n\n
T\u1ea1i sao h\u1ea7u h\u1ebft c\u00e1c x\u01b0\u1edfng hi\u1ec7n \u0111\u1ea1i \u0111\u00e3 t\u1eeb b\u1ecf u\u1ed1n d\u1eadp (v\u00e0 khi n\u00e0o b\u1ea1n kh\u00f4ng n\u00ean)<\/h4>\n\n\n\n
H\u00ecnh ph\u1ea1t v\u1ec1 t\u1ea3i tr\u1ecdng: ph\u00e1 h\u1ee7y d\u1ee5ng c\u1ee5 c\u1ee7a b\u1ea1n \u0111\u1ec3 gi\u1eef dung sai<\/h4>\n\n\n\n
Ph\u1ea7n 2: Ph\u1ea7n c\u1ee9ng (Nh\u1eefng g\u00ec m\u00e1y th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o \u0111\u1ec3 l\u00e0m)<\/h2>\n\n\n\n
M\u00e1y ch\u1ea5n th\u1ee7y l\u1ef1c: Ch\u00fa ng\u1ef1a th\u1ed3 che gi\u1ea5u \u0111i\u1ec3m y\u1ebfu<\/h3>\n\n\n\n
Ki\u1ec3m so\u00e1t \u201c\u0111\u1ed9 tr\u00f4i tr\u1ee5c Y\u201d v\u00e0 nhi\u1ec7t trong s\u1ea3n xu\u1ea5t kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn<\/h4>\n\n\n\n
T\u1ea1i sao ch\u00fang v\u1eabn l\u00e0 vua trong gia c\u00f4ng t\u1ea5m n\u1eb7ng<\/h4>\n\n\n\n
M\u00e1y ch\u1ea5n servo-\u0111i\u1ec7n: \u0110\u1ed9 ch\u00ednh x\u00e1c kh\u00f4ng l\u1ed9n x\u1ed9n<\/h3>\n\n\n\n
\u0110\u00e1nh \u0111\u1ed5i t\u1ea3i tr\u1ecdng th\u00f4 l\u1ea5y t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u su\u1ea5t n\u0103ng l\u01b0\u1ee3ng<\/h4>\n\n\n\n
T\u1ea1i sao truy\u1ec1n \u0111\u1ed9ng \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i trong u\u1ed1n kh\u00ed ch\u00ednh x\u00e1c<\/h4>\n\n\n\n
Gi\u1edbi h\u1ea1n \u201cth\u00e9p kh\u00f4ng g\u1ec9 d\u00e0y\u201d: n\u01a1i servo-\u0111i\u1ec7n ch\u1ea1m tr\u1ea7n<\/h4>\n\n\n\n
Lai & C\u01a1 kh\u00ed: Nh\u1eefng ngo\u1ea1i l\u1ec7<\/h3>\n\n\n\n
Lai: S\u1ee9c m\u1ea1nh th\u1ee7y l\u1ef1c m\u00e0 kh\u00f4ng c\u00f3 v\u0169ng d\u1ea7u<\/h4>\n\n\n\n
C\u01a1 kh\u00ed: T\u1ed1c \u0111\u1ed9 thu\u1ea7n t\u00fay kh\u00f4ng khoan nh\u01b0\u1ee3ng (v\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang nguy hi\u1ec3m v\u1edbi ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i)<\/h4>\n\n\n\n
Ph\u1ea7n 3: Ma tr\u1eadn T\u01b0\u01a1ng th\u00edch (Kho\u1ea3nh kh\u1eafc \u201cAha\u201d)<\/h2>\n\n\n\n
C\u00e1i b\u1eaby L\u1eb7p l\u1ea1i c\u1ee7a Ch\u00e0y \u00e9p: T\u1ea1i sao m\u00e1y c\u0169 bu\u1ed9c b\u1ea1n ph\u1ea3i u\u1ed1n ch\u1ea1m \u0111\u00e1y<\/h3>\n\n\n\n
V\u1ea5n \u0111\u1ec1 \u0110\u1ed9i trung t\u00e2m: Gi\u1ea3i quy\u1ebft \u201cHi\u1ec7u \u1ee9ng Con Thuy\u1ec1n\u201d tr\u00ean c\u00e1c chi ti\u1ebft d\u00e0i<\/h3>\n\n\n\n
T\u1ea1i sao b\u1ea1n kh\u00f4ng th\u1ec3 ch\u1ea5n gi\u00f3 (air bend) ch\u00ednh x\u00e1c tr\u00ean m\u00e1y ch\u1ea5n c\u01a1 kh\u00ed \u0111\u1eddi c\u0169<\/h3>\n\n\n\n
Ph\u1ea7n 4: Gi\u1ea3i m\u00e3 b\u00e1o gi\u00e1 v\u00e0 c\u1ea3i thi\u1ec7n x\u01b0\u1edfng s\u1ea3n xu\u1ea5t<\/h2>\n\n\n\n
Th\u00f4ng s\u1ed1 th\u1ef1c t\u1ebf so v\u1edbi th\u00f4ng s\u1ed1 d\u00f9ng \u0111\u1ec3 b\u00e1n h\u00e0ng<\/h3>\n\n\n\n
CNC so v\u1edbi NC: \u0110i\u1ec1u g\u00ec th\u1ef1c s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi v\u1eadn h\u00e0nh?<\/h4>\n\n\n\n
C\u00e1c ph\u00e9p t\u00ednh l\u1ef1c ch\u1ea5n m\u00e0 nh\u00e2n vi\u00ean b\u00e1n h\u00e0ng th\u01b0\u1eddng l\u1edd \u0111i<\/h4>\n\n\n\n
\u0110\u00e0o t\u1ea1o so v\u1edbi N\u00e2ng c\u1ea5p: Ngu\u1ed3n g\u1ed1c th\u1ef1c s\u1ef1 c\u1ee7a \u0111\u1ed9 ch\u00ednh x\u00e1c<\/h3>\n\n\n\n
T\u1ea1i sao m\u1ed9t m\u00e1y m\u1edbi s\u1ebd kh\u00f4ng kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c chi\u1ebfn l\u01b0\u1ee3c u\u1ed1n sai<\/h4>\n\n\n\n
S\u00e1ng th\u1ee9 Hai: Ch\u1ecdn ki\u1ec3u u\u1ed1n ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng vi\u1ec7c tr\u01b0\u1edbc m\u1eaft<\/h4>\n\n\n\n