本帖最后由 伊凡 于 2011-5-11 15:21 編輯
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' w+ s, h T$ j7 D9 D. KA jig is a device, which holds and supports the work and also guides the path of the
! X) S/ g) m3 `9 o, O0 _! Wcutting tool, as the operation is performed. Jigs are used extensively for operations such as
- @- n: |% m, idrilling, reaming, tapping and counter-boring. The jig need not be secured to the machine.; L$ H" G, o, r {$ g
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A fixture is a device which locates and holds the work securely in a definite position. It: _6 T" a8 L9 n* y8 C1 c
is usually secured to the table of the machine and it does not guide the cutting tool. The cutting! k: t0 C! s l4 z6 K
tool is either moved into position for the operation or the table is moved under the cutting tool.% q- k# d5 m( T0 `, L- g
Fixtures are used while performing milling, turning, honing, broaching, grinding and welding `/ C$ }5 R4 _ Z
operations.
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