本帖最后由 伊凡 于 2011-5-11 15:21 编辑 ( V% T+ C+ O1 x4 B4 o
$ @# t: q d2 ?. @: [8 T, R) yA jig is a device, which holds and supports the work and also guides the path of the
# j# U7 @: V" |- ^1 j& vcutting tool, as the operation is performed. Jigs are used extensively for operations such as1 |9 [, k9 C; \% O" Q. l& H
drilling, reaming, tapping and counter-boring. The jig need not be secured to the machine.7 X! I. I5 u: Y) k( D+ A
) p* U: K! m) c+ p$ O' r; OA fixture is a device which locates and holds the work securely in a definite position. It* K8 N$ D7 E% D- W5 Y5 X& E: |
is usually secured to the table of the machine and it does not guide the cutting tool. The cutting
7 r5 u$ {& w. W* r' t/ Wtool is either moved into position for the operation or the table is moved under the cutting tool.! t9 Y! g3 I, x5 `, P
Fixtures are used while performing milling, turning, honing, broaching, grinding and welding- ~* G0 _' [; |/ x \5 |" E
operations.
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发表于 2011-5-10 17:26:12
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