本帖最后由 伊凡 于 2011-5-11 15:21 编辑
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A jig is a device, which holds and supports the work and also guides the path of the
( C# j7 Q( l, z' U5 f [cutting tool, as the operation is performed. Jigs are used extensively for operations such as
5 v5 ?4 V1 i# s: Odrilling, reaming, tapping and counter-boring. The jig need not be secured to the machine.* e; Q/ M; N/ A; m0 R5 U
) ^ T( i% i& { ], F! LA fixture is a device which locates and holds the work securely in a definite position. It
2 ^* R8 d9 h+ |! q3 v6 Qis usually secured to the table of the machine and it does not guide the cutting tool. The cutting
, M7 B" q/ W. a7 v2 S5 ztool is either moved into position for the operation or the table is moved under the cutting tool.
/ q& O! U" k; ]% ]3 @. mFixtures are used while performing milling, turning, honing, broaching, grinding and welding
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