本帖最后由 伊凡 于 2011-5-11 15:21 編輯
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A jig is a device, which holds and supports the work and also guides the path of the- J% X$ J7 V% E7 f
cutting tool, as the operation is performed. Jigs are used extensively for operations such as
( ^8 P* g% s' t' e8 ndrilling, reaming, tapping and counter-boring. The jig need not be secured to the machine.
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& U! n9 }: K0 w' b, wA fixture is a device which locates and holds the work securely in a definite position. It9 Q. N; S% W o* a
is usually secured to the table of the machine and it does not guide the cutting tool. The cutting
+ j4 S7 i7 U$ t1 Htool is either moved into position for the operation or the table is moved under the cutting tool.2 n' r7 i( U9 N# {; m$ e
Fixtures are used while performing milling, turning, honing, broaching, grinding and welding
; u- l8 U& g6 {+ g: x" woperations.
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