{"id":840,"date":"2026-06-24T09:16:00","date_gmt":"2026-06-24T09:16:00","guid":{"rendered":"https:\/\/oldhamcoupling.net\/oldham-couplings-in-cnc-machines-why-precision-engineers-prefer-them\/"},"modified":"2026-06-24T09:16:02","modified_gmt":"2026-06-24T09:16:02","slug":"oldham-couplings-in-cnc-machines-why-precision-engineers-prefer-them","status":"publish","type":"post","link":"https:\/\/oldhamcoupling.net\/vi\/oldham-couplings-in-cnc-machines-why-precision-engineers-prefer-them\/","title":{"rendered":"Kh\u1edbp n\u1ed1i Oldham trong m\u00e1y CNC: T\u1ea1i sao c\u00e1c k\u1ef9 s\u01b0 ch\u00ednh x\u00e1c l\u1ea1i \u01b0a chu\u1ed9ng ch\u00fang?"},"content":{"rendered":"

Kh\u1edbp n\u1ed1i gi\u1eefa tr\u1ee5c \u0111\u1ed9ng c\u01a1 servo v\u00e0 v\u00edt me bi \u2014 m\u1ed9t b\u1ed9 ph\u1eadn m\u00e0 h\u1ea7u h\u1ebft ng\u01b0\u1eddi v\u1eadn h\u00e0nh m\u00e1y kh\u00f4ng bao gi\u1edd nh\u00ecn th\u1ea5y v\u00e0 hi\u1ebfm khi ngh\u0129 \u0111\u1ebfn \u2014 l\u1ea1i c\u00f3 \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh v\u1ecb, \u0111\u1ed9 l\u1eb7p l\u1ea1i v\u00e0 hi\u1ec7u su\u1ea5t l\u00e2u d\u00e0i c\u1ee7a m\u00e1y CNC. Trong c\u00e1c trung t\u00e2m gia c\u00f4ng hi\u1ec7n \u0111\u1ea1i, m\u00e1y phay CNC, b\u00e0n c\u1eaft laser v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng d\u1eabn \u0111\u1ed9ng tuy\u1ebfn t\u00ednh ch\u00ednh x\u00e1c, Kh\u1edbp n\u1ed1i Oldham<\/strong> N\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n th\u1ef1c t\u1ebf cho \u0111i\u1ec3m k\u1ebft n\u1ed1i quan tr\u1ecdng n\u00e0y. \u0110\u1ec3 hi\u1ec3u l\u00fd do t\u1ea1i sao, c\u1ea7n ph\u1ea3i xem x\u00e9t c\u00e1c h\u1ec7 th\u1ed1ng chuy\u1ec3n \u0111\u1ed9ng CNC th\u1ef1c s\u1ef1 y\u00eau c\u1ea7u g\u00ec t\u1eeb m\u1ed9t kh\u1edbp n\u1ed1i, v\u00e0 t\u1ea1i sao kh\u00f4ng c\u00f3 thi\u1ebft k\u1ebf th\u00f4ng th\u01b0\u1eddng n\u00e0o kh\u00e1c ph\u00f9 h\u1ee3p v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a kh\u1edbp n\u1ed1i Oldham.<\/p>\n

\n \"Kh\u1edbp
Thi\u1ebft k\u1ebf ba m\u1ea3nh nh\u1ecf g\u1ecdn c\u1ee7a kh\u1edbp n\u1ed1i Oldham r\u1ea5t l\u00fd t\u01b0\u1edfng cho kh\u00f4ng gian ch\u1eadt h\u1eb9p c\u1ee7a c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ed9ng c\u01a1 servo v\u1edbi v\u00edt me bi trong h\u1ec7 th\u1ed1ng CNC.<\/figcaption><\/figure>\n

Nh\u1eefng y\u00eau c\u1ea7u c\u1ee7a kh\u1edbp n\u1ed1i \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng chuy\u1ec3n \u0111\u1ed9ng CNC<\/h2>\n

H\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng tr\u1ee5c CNC th\u01b0\u1eddng bao g\u1ed3m m\u1ed9t \u0111\u1ed9ng c\u01a1 servo, m\u1ed9t kh\u1edbp n\u1ed1i, m\u1ed9t v\u00edt me bi, m\u1ed9t \u0111ai \u1ed1c bi v\u00e0 m\u1ed9t b\u00e0n tr\u01b0\u1ee3t tuy\u1ebfn t\u00ednh. \u0110\u1ed9ng c\u01a1 servo \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi m\u1ed9t b\u1ed9 khu\u1ebfch \u0111\u1ea1i \u0111i\u1ec1u khi\u1ec3n ch\u1ea1y v\u00f2ng ph\u1ea3n h\u1ed3i v\u1ecb tr\u00ed v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1eadp nh\u1eadt t\u1eeb 1 \u0111\u1ebfn 4 kHz. B\u1ed9 m\u00e3 h\u00f3a tr\u00ean tr\u1ee5c \u0111\u1ed9ng c\u01a1 b\u00e1o c\u00e1o v\u1ecb tr\u00ed g\u00f3c cho b\u1ed9 \u0111i\u1ec1u khi\u1ec3n, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n s\u1ebd so s\u00e1nh v\u1ecb tr\u00ed n\u00e0y v\u1edbi v\u1ecb tr\u00ed \u0111\u01b0\u1ee3c l\u1ec7nh v\u00e0 \u00e1p d\u1ee5ng m\u00f4-men xo\u1eafn hi\u1ec7u ch\u1ec9nh h\u00e0ng tr\u0103m ho\u1eb7c h\u00e0ng ngh\u00ecn l\u1ea7n m\u1ed7i gi\u00e2y.<\/p>\n

\u0110\u1ec3 h\u1ec7 th\u1ed1ng v\u00f2ng k\u00edn n\u00e0y ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang nh\u01b0 thi\u1ebft k\u1ebf, s\u1ef1 k\u1ebft n\u1ed1i gi\u1eefa \u0111\u1ed9ng c\u01a1 v\u00e0 v\u00edt me bi ph\u1ea3i \u0111\u00e1p \u1ee9ng \u0111\u1ed3ng th\u1eddi m\u1ed9t s\u1ed1 y\u00eau c\u1ea7u kh\u00f4ng th\u1ec3 th\u1ecfa hi\u1ec7p:<\/p>\n

    \n
  • Kh\u00f4ng c\u00f3 ph\u1ea3n \u1ee9ng ti\u00eau c\u1ef1c n\u00e0o:<\/strong> B\u1ea5t k\u1ef3 \u0111\u1ed9 r\u01a1 g\u00f3c n\u00e0o trong kh\u1edbp n\u1ed1i \u0111\u1ec1u c\u00f3 ngh\u0129a l\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ra l\u1ec7nh thay \u0111\u1ed5i v\u1ecb tr\u00ed, \u0111\u1ed9ng c\u01a1 di chuy\u1ec3n, nh\u01b0ng v\u00edt me bi kh\u00f4ng di chuy\u1ec3n theo ngay l\u1eadp t\u1ee9c. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n th\u1ea5y b\u1ed9 m\u00e3 h\u00f3a di chuy\u1ec3n \u0111\u1ebfn v\u1ecb tr\u00ed m\u1ee5c ti\u00eau nh\u01b0ng v\u1ecb tr\u00ed th\u1ef1c t\u1ebf c\u1ee7a b\u00e0n m\u00e1y kh\u00f4ng thay \u0111\u1ed5i. Trong tr\u1ee5c tuy\u1ebfn t\u00ednh, \u0111\u1ed9 r\u01a1 kh\u1edbp n\u1ed1i 1 ph\u00fat cung t\u01b0\u01a1ng \u1ee9ng v\u1edbi sai s\u1ed1 \u0111\u1ecbnh v\u1ecb v\u00e0i micromet \u2014 kh\u00f4ng th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi gia c\u00f4ng ch\u00ednh x\u00e1c.<\/li>\n
  • \u0110\u1ed9 c\u1ee9ng xo\u1eafn cao:<\/strong> Kh\u1edbp n\u1ed1i \u0111\u00e0n h\u1ed3i ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u00f2 xo xo\u1eafn gi\u1eefa \u0111\u1ed9ng c\u01a1 v\u00e0 t\u1ea3i. \u0110\u1ed9 \u0111\u00e0n h\u1ed3i xo\u1eafn n\u00e0y l\u00e0m gi\u1ea3m b\u0103ng th\u00f4ng hi\u1ec7u qu\u1ea3 c\u1ee7a v\u00f2ng \u0111i\u1ec1u khi\u1ec3n v\u1ecb tr\u00ed \u2014 n\u00f3 gi\u1edbi h\u1ea1n m\u1ee9c \u0111\u1ed9 \u0111i\u1ec1u ch\u1ec9nh servo m\u1ea1nh m\u1ebd tr\u01b0\u1edbc khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t \u1ed5n \u0111\u1ecbnh. Kh\u1edbp n\u1ed1i c\u1ee9ng h\u01a1n cho ph\u00e9p t\u0103ng \u0111\u1ed9 l\u1ee3i servo cao h\u01a1n, gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c theo d\u00f5i v\u00e0 t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i.<\/li>\n
  • Dung sai l\u1ec7ch ngang:<\/strong> Vi\u1ec7c \u0111\u1ea1t \u0111\u01b0\u1ee3c v\u00e0 duy tr\u00ec s\u1ef1 th\u1eb3ng h\u00e0ng ho\u00e0n h\u1ea3o gi\u1eefa tr\u1ee5c \u0111\u1ed9ng c\u01a1 servo v\u00e0 tr\u1ee5c v\u00edt bi l\u00e0 \u0111i\u1ec1u g\u1ea7n nh\u01b0 kh\u00f4ng th\u1ec3 trong su\u1ed1t v\u00f2ng \u0111\u1eddi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y. S\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ee7a k\u1ebft c\u1ea5u m\u00e1y, s\u1ef1 m\u00e0i m\u00f2n \u1ed5 bi v\u00e0 dung sai gia c\u00f4ng t\u00edch l\u0169y \u0111\u1ec1u g\u00f3p ph\u1ea7n t\u1ea1o ra \u0111\u1ed9 l\u1ec7ch ngang d\u01b0 th\u1eeba m\u00e0 kh\u1edbp n\u1ed1i ph\u1ea3i h\u1ea5p th\u1ee5 m\u00e0 kh\u00f4ng g\u00e2y l\u1ef1c l\u00ean \u1ed5 bi c\u1ee7a \u0111\u1ed9ng c\u01a1 ho\u1eb7c \u1ed5 bi \u0111\u1ea7u tr\u1ee5c v\u00edt bi.<\/li>\n
  • Qu\u00e1n t\u00ednh th\u1ea5p:<\/strong> Qu\u00e1n t\u00ednh quay c\u1ee7a kh\u1edbp n\u1ed1i c\u1ed9ng th\u00eam v\u00e0o t\u1ed5ng qu\u00e1n t\u00ednh ph\u1ea3n \u00e1nh t\u1ea1i tr\u1ee5c \u0111\u1ed9ng c\u01a1. Qu\u00e1n t\u00ednh kh\u1edbp n\u1ed1i cao l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ph\u1ea3n h\u1ed3i \u0111\u1ed9ng h\u1ecdc c\u1ee7a servo v\u00e0 l\u00e0m t\u0103ng k\u00edch th\u01b0\u1edbc \u0111\u1ed9ng c\u01a1 c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t gia t\u1ed1c nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<\/ul>\n

    V\u00ec sao kh\u1edbp n\u1ed1i d\u1ea1ng \u1ed1ng x\u1ebfp v\u00e0 kh\u1edbp n\u1ed1i d\u1ea1ng thanh kh\u00f4ng hi\u1ec7u qu\u1ea3<\/h2>\n

    C\u1ea3 kh\u1edbp n\u1ed1i d\u1ea1ng \u1ed1ng x\u1ebfp v\u00e0 kh\u1edbp n\u1ed1i d\u1ea1ng thanh (xo\u1eafn \u1ed1c) \u0111\u1ec1u l\u00e0 thi\u1ebft k\u1ebf kh\u00f4ng c\u00f3 khe h\u1edf v\u00e0 \u0111\u1ec1u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng CNC. Tuy nhi\u00ean, c\u1ea3 hai \u0111\u1ec1u kh\u00f4ng x\u1eed l\u00fd t\u1ed1t s\u1ef1 l\u1ec7ch tr\u1ee5c ngang. M\u1ed9t kh\u1edbp n\u1ed1i d\u1ea1ng \u1ed1ng x\u1ebfp c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ed9 l\u1ec7ch ngang 0,3 mm s\u1ebd t\u1ea1o ra m\u1ed9t l\u1ef1c ph\u1ee5c h\u1ed3i h\u01b0\u1edbng t\u00e2m v\u00e0i Newton t\u00e1c \u0111\u1ed9ng l\u00ean \u0111\u1ed9ng c\u01a1 v\u00e0 \u1ed5 tr\u1ee5c v\u00edt me n\u1ebfu \u0111\u1ed9 l\u1ec7ch th\u1ef1c t\u1ebf g\u1ea7n \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n \u0111\u00f3. Trong m\u1ed9t tr\u1ee5c ch\u00ednh x\u00e1c ho\u1eb7c m\u1ed9t v\u00edt me me b\u01b0\u1edbc ren nh\u1ecf v\u1edbi \u1ed5 tr\u1ee5c \u0111\u1ea7u nh\u1eb9, l\u1ef1c n\u00e0y g\u00e2y ra s\u1ef1 gia t\u0103ng \u0111\u00e1ng k\u1ec3 v\u1ec1 ma s\u00e1t, nhi\u1ec7t \u0111\u1ed9 \u1ed5 tr\u1ee5c v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 l\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd \u1ed5 tr\u1ee5c.<\/p>\n

    C\u00e1c kh\u1edbp n\u1ed1i d\u1ea1ng d\u1ea7m th\u1eadm ch\u00ed c\u00f2n nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi \u0111\u1ed9 l\u1ec7ch ngang \u2014 h\u00ecnh d\u1ea1ng c\u1eaft xo\u1eafn \u1ed1c c\u1ee7a ch\u00fang c\u00f3 ngh\u0129a l\u00e0 s\u1ef1 linh ho\u1ea1t theo ph\u01b0\u01a1ng ngang ph\u1ea3i tr\u1ea3 gi\u00e1 b\u1eb1ng vi\u1ec7c gi\u1ea3m \u0111\u1ed9 c\u1ee9ng xo\u1eafn, \u0111i\u1ec1u n\u00e0y m\u00e2u thu\u1eabn tr\u1ef1c ti\u1ebfp v\u1edbi y\u00eau c\u1ea7u c\u1ee7a servo v\u1ec1 m\u1ed9t \u0111\u01b0\u1eddng truy\u1ec1n m\u00f4-men xo\u1eafn c\u1ee9ng v\u1eefng.<\/p>\n

    Kh\u1edbp n\u1ed1i Oldham h\u1ea5p th\u1ee5 \u0111\u1ed9 l\u1ec7ch ngang th\u00f4ng qua c\u01a1 ch\u1ebf \u0111\u0129a tr\u01b0\u1ee3t c\u1ee7a n\u00f3, \u0111i\u1ec1u n\u00e0y - \u0111\u1ed9c \u0111\u00e1o so v\u1edbi c\u00e1c lo\u1ea1i kh\u1edbp n\u1ed1i kh\u00e1c - t\u1ea1o ra l\u1ef1c ph\u1ea3n l\u1ef1c h\u01b0\u1edbng t\u00e2m g\u1ea7n nh\u01b0 b\u1eb1ng kh\u00f4ng<\/strong> Tr\u00ean c\u00e1c \u1ed5 tr\u1ee5c, b\u1ea5t k\u1ec3 \u0111\u1ed9 l\u1ec7ch l\u1edbn hay nh\u1ecf (trong ph\u1ea1m vi \u0111\u1ecbnh m\u1ee9c c\u1ee7a kh\u1edbp n\u1ed1i). C\u00e1c \u1ed5 tr\u1ee5c \u0111\u1ed9ng c\u01a1 v\u00e0 \u1ed5 tr\u1ee5c \u0111\u1ea7u v\u00edt me ch\u1ec9 ch\u1ecbu l\u1ef1c m\u00e0 ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ch\u1ecbu \u0111\u1ef1ng.<\/p>\n

    \n \"H\u00ecnh
    Giao di\u1ec7n m\u1ed9ng v\u00e0 r\u00e3nh v\u1eeba kh\u00edt mang l\u1ea1i \u0111\u1ed9 c\u1ee9ng xo\u1eafn cao m\u00e0 c\u00e1c v\u00f2ng \u0111i\u1ec1u khi\u1ec3n servo CNC y\u00eau c\u1ea7u, trong khi \u0111\u0129a tr\u01b0\u1ee3t h\u1ea5p th\u1ee5 t\u1ea5t c\u1ea3 \u0111\u1ed9 l\u1ec7ch ngang.<\/figcaption><\/figure>\n

    \u01afu \u0111i\u1ec3m c\u1ee7a vi\u1ec7c lo\u1ea1i b\u1ecf ph\u1ea3n l\u1ef1c trong \u0111i\u1ec1u khi\u1ec3n v\u00f2ng k\u00edn<\/h2>\n

    Trong tr\u1ee5c CNC c\u00f3 kh\u1edbp n\u1ed1i b\u1ecb r\u01a1, tr\u00ecnh t\u1ef1 sau x\u1ea3y ra \u1edf m\u1ed7i l\u1ea7n \u0111\u1ea3o chi\u1ec1u quay: b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ra l\u1ec7nh di chuy\u1ec3n theo h\u01b0\u1edbng m\u1edbi; \u0111\u1ed9ng c\u01a1 ph\u1ea3n h\u1ed3i v\u00e0 b\u1ed9 m\u00e3 h\u00f3a b\u00e1o c\u00e1o chuy\u1ec3n \u0111\u1ed9ng; nh\u01b0ng v\u00edt me bi v\u00e0 b\u00e0n m\u00e1y kh\u00f4ng di chuy\u1ec3n cho \u0111\u1ebfn khi r\u01a1 \u0111\u01b0\u1ee3c lo\u1ea1i b\u1ecf. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n, th\u1ea5y s\u1ef1 ti\u1ebfn tri\u1ec3n v\u1ecb tr\u00ed r\u00f5 r\u00e0ng tr\u00ean b\u1ed9 m\u00e3 h\u00f3a, ng\u1eebng t\u00e1c d\u1ee5ng m\u00f4-men xo\u1eafn \u2014 nh\u01b0ng b\u00e0n m\u00e1y v\u1eabn \u1edf v\u1ecb tr\u00ed sai.<\/p>\n

    C\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n CNC hi\u1ec7n \u0111\u1ea1i c\u00f3 ch\u1ee9c n\u0103ng b\u00f9 khe h\u1edf kh\u1edbp n\u1ed1i, b\u1ed5 sung th\u00eam m\u1ed9t gia s\u1ed1 \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n \u1edf m\u1ed7i l\u1ea7n \u0111\u1ea3o chi\u1ec1u \u0111\u1ec3 b\u00f9 l\u1ea1i khe h\u1edf kh\u1edbp n\u1ed1i \u0111\u00e3 bi\u1ebft. Tuy nhi\u00ean, ch\u1ee9c n\u0103ng b\u00f9 n\u00e0y ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng n\u1ebfu khe h\u1edf l\u00e0 kh\u00f4ng \u0111\u1ed5i v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i. Tr\u00ean th\u1ef1c t\u1ebf, khe h\u1edf thay \u0111\u1ed5i theo t\u1ea3i tr\u1ecdng, nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 m\u00e0i m\u00f2n \u2014 do \u0111\u00f3, s\u1ef1 b\u00f9 tr\u1eeb lu\u00f4n ch\u1ec9 l\u00e0 g\u1ea7n \u0111\u00fang. Gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady duy nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng kh\u1edbp n\u1ed1i kh\u00f4ng c\u00f3 khe h\u1edf c\u1ea7n b\u00f9.<\/p>\n

    Kh\u1edbp n\u1ed1i Oldham lo\u1ea1i b\u1ecf v\u1ea5n \u0111\u1ec1 n\u00e0y ngay t\u1eeb ngu\u1ed3n g\u1ed1c. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n servo \u0111i\u1ec1u khi\u1ec3n v\u00edt me bi tr\u1ef1c ti\u1ebfp v\u00e0 ngay l\u1eadp t\u1ee9c \u1edf m\u1ed7i l\u1ea7n \u0111\u1ea3o chi\u1ec1u, kh\u00f4ng c\u00f3 v\u00f9ng ch\u1ebft v\u00e0 kh\u00f4ng c\u1ea7n b\u00f9 tr\u1eeb b\u1eb1ng ph\u1ea7n m\u1ec1m. \u0110i\u1ec1u n\u00e0y tr\u1ef1c ti\u1ebfp d\u1eabn \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1eddng vi\u1ec1n t\u1ed1t h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong n\u1ed9i suy tr\u00f2n v\u00e0 c\u00e1c chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ea3o chi\u1ec1u, n\u01a1i m\u00e0 hi\u1ec7n t\u01b0\u1ee3ng khe h\u1edf s\u1ebd t\u1ea1o ra \"v\u1ebft l\u1ed3i do khe h\u1edf\" \u0111\u1eb7c tr\u01b0ng tr\u00ean b\u1ec1 m\u1eb7t gia c\u00f4ng.<\/p>\n

    C\u00e1c \u1ee9ng d\u1ee5ng CNC \u0111i\u1ec3n h\u00ecnh<\/h2>\n

    Trung t\u00e2m gia c\u00f4ng \u0111\u1ee9ng (VMC) v\u00e0 trung t\u00e2m gia c\u00f4ng ngang (HMC):<\/strong> H\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng v\u00edt me bi tr\u1ee5c X, Y v\u00e0 Z. Kh\u1edbp n\u1ed1i Oldham th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong ph\u1ea1m vi m\u00f4-men xo\u1eafn 10\u201350 Nm cho c\u00e1c tr\u1ee5c n\u00e0y, v\u1edbi c\u00e1c moay\u01a1 nh\u00f4m ki\u1ec3u k\u1eb9p v\u00e0 \u0111\u0129a trung t\u00e2m b\u1eb1ng acetal. K\u00edch th\u01b0\u1edbc kh\u1edbp n\u1ed1i \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 gi\u1eef qu\u00e1n t\u00ednh d\u01b0\u1edbi 5% so v\u1edbi qu\u00e1n t\u00ednh c\u1ee7a v\u00edt me bi v\u00e0 qu\u00e1n t\u00ednh c\u1ee7a gi\u00e1 \u0111\u1ee1 \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh t\u1ea1i tr\u1ee5c \u0111\u1ed9ng c\u01a1.<\/p>\n

    M\u00e1y phay CNC v\u00e0 b\u00e0n c\u1eaft plasma\/laser:<\/strong> Nh\u1eefng m\u00e1y m\u00f3c n\u00e0y th\u01b0\u1eddng c\u00f3 kh\u00f4ng gian l\u00e0m vi\u1ec7c l\u1edbn h\u01a1n v\u00e0 do \u0111\u00f3, tr\u1ee5c v\u00edt bi c\u0169ng l\u1edbn h\u01a1n. \u0110\u1ed9 l\u1ec7ch ngang gi\u1eefa \u0111\u1ed9ng c\u01a1 servo v\u00e0 tr\u1ee5c v\u00edt c\u00f3 th\u1ec3 \u0111\u00e1ng k\u1ec3 h\u01a1n do khung m\u00e1y d\u00e0i h\u01a1n v\u00e0 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 l\u1edbn h\u01a1n. Kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ed9 l\u1ec7ch ngang v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a kh\u1edbp n\u1ed1i Oldham so v\u1edbi c\u00e1c lo\u1ea1i kh\u1edbp n\u1ed1i ki\u1ec3u \u1ed1ng x\u1ebfp ho\u1eb7c ki\u1ec3u d\u1ea7m \u0111\u1eb7c bi\u1ec7t c\u00f3 gi\u00e1 tr\u1ecb trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y.<\/p>\n

    M\u00e1y m\u00e0i:<\/strong> Tr\u1ee5c m\u00e0i b\u00e1nh xe v\u00e0 b\u1ed9 truy\u1ec1n \u0111\u1ed9ng b\u00e0n tr\u00ean m\u00e1y m\u00e0i m\u1eb7t ph\u1eb3ng v\u00e0 m\u00e1y m\u00e0i tr\u1ee5. M\u00f4i tr\u01b0\u1eddng m\u00e0i \u0111\u1eb7t ra th\u00e1ch th\u1ee9c b\u1ed5 sung l\u00e0 s\u1ef1 nhi\u1ec5m b\u1ea9n ch\u1ea5t l\u00e0m m\u00e1t v\u00e0 c\u00e1c h\u1ea1t m\u00e0i m\u00f2n. C\u00e1c bi\u1ebfn th\u1ec3 tr\u1ee5c b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 v\u1edbi vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u \u0111\u0129a ph\u00f9 h\u1ee3p (PEEK \u0111\u1ec3 ch\u1ed1ng l\u1ea1i ch\u1ea5t l\u00e0m m\u00e1t) gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c th\u00e1ch th\u1ee9c n\u00e0y.<\/p>\n

    M\u00e1y c\u1eaft d\u00e2y v\u00e0 EDM:<\/strong> Nh\u1eefng m\u00e1y m\u00f3c n\u00e0y \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh v\u1ecb cao nh\u1ea5t trong s\u1ed1 c\u00e1c thi\u1ebft b\u1ecb CNC, th\u01b0\u1eddng \u1edf m\u1ee9c d\u01b0\u1edbi micromet. Vi\u1ec7c kh\u1edbp n\u1ed1i Oldham ho\u00e0n to\u00e0n kh\u00f4ng c\u00f3 \u0111\u1ed9 r\u01a1 v\u00e0 \u0111\u1eb7c t\u00ednh c\u00e1ch \u0111i\u1ec7n (ng\u0103n d\u00f2ng \u0111i\u1ec7n ph\u00f3ng l\u1ea1c h\u01b0\u1edbng \u0111i qua gi\u1eefa \u0111\u1ed9ng c\u01a1 v\u00e0 c\u1ea5u tr\u00fac m\u00e1y th\u00f4ng qua kh\u1edbp n\u1ed1i) khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean.<\/p>\n

    H\u1ec7 th\u1ed1ng \u0111\u1ed9ng c\u01a1 tuy\u1ebfn t\u00ednh v\u00e0 b\u00e0n xoay truy\u1ec1n \u0111\u1ed9ng tr\u1ef1c ti\u1ebfp:<\/strong> Ngay c\u1ea3 trong c\u00e1c h\u1ec7 th\u1ed1ng kh\u00f4ng s\u1eed d\u1ee5ng v\u00edt me bi, kh\u1edbp n\u1ed1i Oldham v\u1eabn xu\u1ea5t hi\u1ec7n trong c\u00e1c k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb ph\u1ea3n h\u1ed3i \u2014 gi\u1eefa tr\u1ee5c \u0111\u1ed9ng c\u01a1 v\u00e0 b\u1ed9 m\u00e3 h\u00f3a ph\u1ee5 tr\u1ee3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o v\u1ecb tr\u00ed tr\u1ef1c ti\u1ebfp.<\/p>\n

    \n \"Kh\u1edbp
    T\u1ea3i tr\u1ecdng h\u01b0\u1edbng t\u00e2m b\u1eb1ng kh\u00f4ng c\u1ee7a kh\u1edbp n\u1ed1i Oldham gi\u00fap b\u1ea3o v\u1ec7 c\u1ea3 \u1ed5 tr\u1ee5c \u0111\u1ed9ng c\u01a1 servo v\u00e0 \u1ed5 tr\u1ee5c \u0111\u1ea7u v\u00edt me bi kh\u1ecfi c\u00e1c l\u1ef1c h\u01b0\u1edbng t\u00e2m do kh\u1edbp n\u1ed1i g\u00e2y ra.<\/figcaption><\/figure>\n

    H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc cho c\u00e1c \u1ee9ng d\u1ee5ng kh\u1edbp n\u1ed1i servo CNC<\/h2>\n

    Khi l\u1ef1a ch\u1ecdn kh\u1edbp n\u1ed1i Oldham cho tr\u1ee5c servo CNC, ngo\u00e0i quy tr\u00ecnh l\u1ef1a ch\u1ecdn chung, h\u00e3y \u00e1p d\u1ee5ng c\u00e1c h\u01b0\u1edbng d\u1eabn sau:<\/p>\n

    M\u00f4-men xo\u1eafn \u0111\u1ecbnh m\u1ee9c:<\/strong> S\u1eed d\u1ee5ng m\u00f4-men xo\u1eafn c\u1ef1c \u0111\u1ea1i c\u1ee7a \u0111\u1ed9ng c\u01a1 servo (kh\u00f4ng ph\u1ea3i m\u00f4-men xo\u1eafn \u0111\u1ecbnh m\u1ee9c li\u00ean t\u1ee5c) l\u00e0m c\u01a1 s\u1edf \u0111\u1ec3 l\u1ef1a ch\u1ecdn. \u00c1p d\u1ee5ng h\u1ec7 s\u1ed1 an to\u00e0n l\u00e0 2.0 \u0111\u1ec3 t\u00ednh \u0111\u1ebfn c\u00e1c qu\u00e1 t\u1ea3i t\u1ee9c th\u1eddi trong qu\u00e1 tr\u00ecnh t\u0103ng t\u1ed1c v\u00e0 d\u1eebng kh\u1ea9n c\u1ea5p. M\u00f4-men xo\u1eafn thi\u1ebft k\u1ebf thu \u0111\u01b0\u1ee3c ph\u1ea3i n\u1eb1m trong ph\u1ea1m vi m\u00f4-men xo\u1eafn \u0111\u1ecbnh m\u1ee9c li\u00ean t\u1ee5c c\u1ee7a kh\u1edbp n\u1ed1i \u2014 sao cho kh\u1edbp n\u1ed1i ho\u1ea1t \u0111\u1ed9ng tho\u1ea3i m\u00e1i d\u01b0\u1edbi gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3 trong \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh b\u00ecnh th\u01b0\u1eddng, v\u1edbi bi\u00ean \u0111\u1ed9 an to\u00e0n \u0111\u1ea7y \u0111\u1ee7 cho c\u00e1c \u0111\u1ec9nh m\u00f4-men xo\u1eafn.<\/p>\n

    Lo\u1ea1i trung t\u00e2m:<\/strong> Lu\u00f4n lu\u00f4n ch\u1ec9 \u0111\u1ecbnh c\u00e1c tr\u1ee5c k\u1eb9p cho c\u00e1c \u1ee9ng d\u1ee5ng servo CNC. S\u1ef1 \u0111\u1ea3o chi\u1ec1u m\u00f4-men xo\u1eafn l\u1edbn v\u00e0 th\u01b0\u1eddng xuy\u00ean v\u1ed1n c\u00f3 trong \u0111\u1ecbnh v\u1ecb servo c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng tr\u01b0\u1ee3t tr\u1ee5c d\u1ea7n d\u1ea7n v\u1edbi c\u00e1c tr\u1ee5c c\u00f3 v\u00edt \u0111\u1ecbnh v\u1ecb, d\u1eabn \u0111\u1ebfn s\u1ef1 tr\u00f4i l\u1ec7ch g\u00f3c ch\u1eadm gi\u1eefa b\u1ed9 m\u00e3 h\u00f3a \u0111\u1ed9ng c\u01a1 v\u00e0 tr\u1ee5c v\u00edt bi, bi\u1ec3u hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng sai s\u1ed1 \u0111\u1ecbnh v\u1ecb t\u00edch l\u0169y theo th\u1eddi gian.<\/p>\n

    Qu\u00e1n t\u00ednh gh\u00e9p n\u1ed1i:<\/strong> \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o qu\u00e1n t\u00ednh kh\u1edbp n\u1ed1i lu\u00f4n d\u01b0\u1edbi 5% qu\u00e1n t\u00ednh r\u00f4to c\u1ee7a \u0111\u1ed9ng c\u01a1 \u0111\u1ed1i v\u1edbi c\u00e1c tr\u1ee5c servo b\u0103ng th\u00f4ng cao. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng b\u0103ng th\u00f4ng trung b\u00ecnh (tr\u1ee5c c\u1ea5p li\u1ec7u thay v\u00ec c\u00e1c b\u00e0n \u0111\u1ecbnh v\u1ecb t\u1ed1c \u0111\u1ed9 cao), m\u1ee9c l\u00ean \u0111\u1ebfn 10% th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn.<\/p>\n

    Sai l\u1ec7ch:<\/strong> H\u00e3y d\u00e0nh th\u1eddi gian c\u0103n ch\u1ec9nh tr\u1ee5c c\u1ea9n th\u1eadn khi l\u1eafp \u0111\u1eb7t. M\u1eb7c d\u00f9 kh\u1edbp n\u1ed1i Oldham c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111\u1ed9 l\u1ec7ch ngang t\u1eeb 1,0 mm tr\u1edf l\u00ean, nh\u01b0ng vi\u1ec7c v\u1eadn h\u00e0nh v\u1edbi \u0111\u1ed9 c\u0103n ch\u1ec9nh t\u1ed1t (0,1\u20130,2 mm ho\u1eb7c \u00edt h\u01a1n) s\u1ebd l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ef1 m\u00e0i m\u00f2n \u0111\u0129a, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd v\u00e0 gi\u1eef cho t\u1ea3i tr\u1ecdng \u1ed5 tr\u1ee5c \u1edf m\u1ee9c th\u1ea5p nh\u1ea5t c\u00f3 th\u1ec3. Quy tr\u00ecnh c\u0103n ch\u1ec9nh m\u1ea5t t\u1eeb \u200b\u200b15 \u0111\u1ebfn 30 ph\u00fat v\u00e0 s\u1ebd mang l\u1ea1i l\u1ee3i \u00edch g\u1ea5p nhi\u1ec1u l\u1ea7n so v\u1edbi chi ph\u00ed b\u1ecf ra nh\u1edd k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn.<\/p>\n

    T\u00edch h\u1ee3p v\u1edbi qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng servo<\/h2>\n

    Khi v\u1eadn h\u00e0nh tr\u1ee5c servo CNC \u0111\u01b0\u1ee3c trang b\u1ecb kh\u1edbp n\u1ed1i Oldham, m\u1ed9t v\u00e0i b\u01b0\u1edbc b\u1ed5 sung s\u1ebd gi\u00fap x\u00e1c nh\u1eadn vi\u1ec7c l\u1eafp \u0111\u1eb7t ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a kh\u1edbp n\u1ed1i:<\/p>\n

    Th\u1eed nghi\u1ec7m \u0111\u1ed9 r\u01a1:<\/strong> Sau khi l\u1eafp \u0111\u1eb7t, h\u00e3y \u0111i\u1ec1u khi\u1ec3n m\u1ed9t chuy\u1ec3n \u0111\u1ed9ng \u0111\u1ea3o chi\u1ec1u nh\u1ecf (0,1 mm) tr\u00ean tr\u1ee5c v\u00e0 \u0111o v\u1ecb tr\u00ed th\u1ef1c t\u1ebf c\u1ee7a b\u00e0n tr\u01b0\u1ee3t b\u1eb1ng \u0111\u1ed3ng h\u1ed3 \u0111o \u0111\u1ed9 l\u1ec7ch. V\u1ecb tr\u00ed \u0111o \u0111\u01b0\u1ee3c ph\u1ea3i kh\u1edbp v\u1edbi v\u1ecb tr\u00ed \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n trong ph\u1ea1m vi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh v\u1ecb do nh\u00e0 s\u1ea3n xu\u1ea5t quy \u0111\u1ecbnh. B\u1ea5t k\u1ef3 s\u1ef1 sai l\u1ec7ch \u0111\u00e1ng k\u1ec3 n\u00e0o \u0111\u1ec1u cho th\u1ea5y c\u00f3 \u0111\u1ed9 r\u01a1 kh\u1edbp n\u1ed1i (\u0111i\u1ec1u n\u00e0y kh\u00f3 x\u1ea3y ra v\u1edbi b\u1ed9 truy\u1ec1n \u0111\u1ed9ng Oldham \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch) ho\u1eb7c c\u00e1c v\u1ea5n \u0111\u1ec1 kh\u00e1c trong h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng.<\/p>\n

    Th\u00ed nghi\u1ec7m ma s\u00e1t v\u00e0 l\u1ef1c c\u1ea3n:<\/strong> Di chuy\u1ec3n tr\u1ee5c \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p theo c\u1ea3 hai h\u01b0\u1edbng v\u00e0 theo d\u00f5i d\u00f2ng \u0111i\u1ec7n servo. S\u1ef1 t\u0103ng \u0111\u1ed9t bi\u1ebfn d\u00f2ng \u0111i\u1ec7n \u1edf gi\u1eefa h\u00e0nh tr\u00ecnh c\u00f3 th\u1ec3 cho th\u1ea5y kh\u1edbp n\u1ed1i \u0111ang truy\u1ec1n l\u1ef1c ngang do sai l\u1ec7ch v\u00e0o \u0111ai \u1ed1c v\u00edt bi, l\u00e0m t\u0103ng ma s\u00e1t. C\u1ea3i thi\u1ec7n s\u1ef1 th\u1eb3ng h\u00e0ng n\u1ebfu quan s\u00e1t th\u1ea5y hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y.<\/p>\n

    \u0110\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a v\u00f2ng \u0111i\u1ec1u khi\u1ec3n servo:<\/strong> Khi l\u1eafp \u0111\u1eb7t kh\u1edbp n\u1ed1i Oldham, h\u1ec7 s\u1ed1 khu\u1ebfch \u0111\u1ea1i servo n\u00f3i chung c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp cao h\u01a1n so v\u1edbi kh\u1edbp n\u1ed1i d\u1ea1ng \u1ed1ng x\u1ebfp ho\u1eb7c d\u1ea1ng thanh v\u00ec \u0111\u1ed9 c\u1ee9ng xo\u1eafn cao c\u1ee7a kh\u1edbp n\u1ed1i l\u00e0m gi\u1ea3m \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 \u0111\u00e0n h\u1ed3i kh\u1edbp n\u1ed1i \u0111\u1ebfn bi\u00ean \u0111\u1ed9 pha c\u1ee7a v\u00f2ng \u0111i\u1ec1u khi\u1ec3n. N\u1ebfu tr\u1ee5c tr\u01b0\u1edbc \u0111\u00e2y \u0111\u01b0\u1ee3c trang b\u1ecb kh\u1edbp n\u1ed1i c\u00f3 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i cao h\u01a1n, h\u00e3y hi\u1ec7u ch\u1ec9nh l\u1ea1i servo sau khi l\u1eafp \u0111\u1eb7t kh\u1edbp n\u1ed1i Oldham \u0111\u1ec3 t\u1eadn d\u1ee5ng l\u1ee3i th\u1ebf c\u1ee7a \u0111\u1ed9 c\u1ee9ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n.<\/p>\n

    Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n

    Kh\u1edbp n\u1ed1i Oldham kh\u1eb3ng \u0111\u1ecbnh v\u1ecb th\u1ebf c\u1ee7a m\u00ecnh trong m\u00e1y CNC b\u1eb1ng c\u00e1ch cung c\u1ea5p s\u1ef1 k\u1ebft h\u1ee3p ch\u00ednh x\u00e1c c\u00e1c \u0111\u1eb7c t\u00ednh m\u00e0 tr\u1ee5c v\u00edt bi \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng servo y\u00eau c\u1ea7u: \u0111\u1ed9 r\u01a1 b\u1eb1ng kh\u00f4ng m\u1ecdi l\u00fac, \u0111\u1ed9 c\u1ee9ng xo\u1eafn cao \u0111\u1ec3 h\u1ed7 tr\u1ee3 \u0111i\u1ec1u ch\u1ec9nh servo m\u1ea1nh m\u1ebd, kh\u1ea3 n\u0103ng ch\u1ecbu sai l\u1ec7ch ngang tuy\u1ec7t v\u1eddi \u0111\u1ec3 b\u1ea3o v\u1ec7 \u1ed5 bi v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c sai s\u00f3t trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t th\u1ef1c t\u1ebf, qu\u00e1n t\u00ednh th\u1ea5p \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9ng l\u1ef1c h\u1ecdc c\u1ee7a servo v\u00e0 c\u00e1ch ly \u0111i\u1ec7n \u0111\u1ec3 ng\u0103n d\u00f2ng \u0111i\u1ec7n l\u1ea1c ch\u1ea1y qua h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng. Kh\u00f4ng c\u00f3 lo\u1ea1i kh\u1edbp n\u1ed1i ti\u00eau chu\u1ea9n n\u00e0o kh\u00e1c cung c\u1ea5p s\u1ef1 k\u1ebft h\u1ee3p n\u00e0y. \u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 ch\u00ednh x\u00e1c hi\u1ec3u r\u00f5 nh\u1eefng g\u00ec \u0111ang x\u1ea3y ra b\u00ean trong tr\u1ee5c servo CNC, kh\u1edbp n\u1ed1i Oldham kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn trong s\u1ed1 nhi\u1ec1u l\u1ef1a ch\u1ecdn \u2014 m\u00e0 l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang \u0111\u1eafn.<\/p>\n

    Kh\u00e1m ph\u00e1 c\u1ee7a ch\u00fang t\u00f4i D\u00f2ng kh\u1edbp n\u1ed1i Oldham d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng CNC v\u00e0 servo<\/a>, ho\u1eb7c li\u00ean h\u1ec7 v\u1edbi nh\u00f3m c\u1ee7a ch\u00fang t\u00f4i<\/a> \u0110\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u1ec1 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3.<\/p>","protected":false},"excerpt":{"rendered":"

    The coupling that connects a servo motor shaft to a ballscrew \u2014 a component that most machine operators never see and rarely think about \u2014 has an outsized influence on the positioning accuracy, repeatability, and long-term performance of a CNC machine. In modern machining centres, CNC routers, laser cutting tables, and precision linear stages, the […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[722],"tags":[771,772,775,770,776,769,777,774,773],"class_list":["post-840","post","type-post","status-publish","format-standard","hentry","category-blog","tag-ballscrew-coupling","tag-cnc-axis-drive-coupling","tag-cnc-positioning-accuracy","tag-cnc-servo-coupling","tag-coupling-for-linear-motion-stage","tag-oldham-coupling-cnc","tag-precision-machine-coupling","tag-servo-motor-coupling","tag-zero-backlash-cnc"],"_links":{"self":[{"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/posts\/840","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/comments?post=840"}],"version-history":[{"count":1,"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/posts\/840\/revisions"}],"predecessor-version":[{"id":858,"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/posts\/840\/revisions\/858"}],"wp:attachment":[{"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/media?parent=840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/categories?post=840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/oldhamcoupling.net\/vi\/wp-json\/wp\/v2\/tags?post=840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}