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
" u- F: A2 q, C+ [8 R7 w% tcutting tool, as the operation is performed. Jigs are used extensively for operations such as& C/ N- m. I7 v- c/ w% T# d1 G% C' j
drilling, 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" Z; n- z/ w* G+ M; A" q
is usually secured to the table of the machine and it does not guide the cutting tool. The cutting
: h+ Z7 G; W- J& Z* N9 u8 j. u6 _tool is either moved into position for the operation or the table is moved under the cutting tool.
- V. v5 i: K& J% k* i% ]/ EFixtures are used while performing milling, turning, honing, broaching, grinding and welding7 m. ]7 z9 I' t! @) k* j9 m
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发表于 2011-5-10 17:26:12
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