本帖最后由 伊凡 于 2011-5-11 15:21 編輯
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7 l7 b; n; L( C% ~+ ^A jig is a device, which holds and supports the work and also guides the path of the3 w$ v) e# G: v+ E+ k
cutting tool, as the operation is performed. Jigs are used extensively for operations such as
0 Q# ~* p7 h" e% K6 y6 Z' fdrilling, reaming, tapping and counter-boring. The jig need not be secured to the machine.
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A fixture is a device which locates and holds the work securely in a definite position. It* @4 m0 x7 ?; T! U4 l! t8 S
is usually secured to the table of the machine and it does not guide the cutting tool. The cutting9 ?: ~' w6 t8 M: o# }; D
tool is either moved into position for the operation or the table is moved under the cutting tool.( O& v& M* x8 l* k3 h B+ t9 p/ Z2 `
Fixtures are used while performing milling, turning, honing, broaching, grinding and welding
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