本帖最后由 伊凡 于 2011-5-11 15:21 编辑 & F$ d/ X. _7 w
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A jig is a device, which holds and supports the work and also guides the path of the* q& J0 ~% C, L1 @
cutting tool, as the operation is performed. Jigs are used extensively for operations such as
. F2 H$ ?; g/ `- v9 p2 Y( ldrilling, reaming, tapping and counter-boring. The jig need not be secured to the machine.
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+ J5 K! U' Q% Q* s( jA fixture is a device which locates and holds the work securely in a definite position. It; d8 t7 F# C3 ]# p
is usually secured to the table of the machine and it does not guide the cutting tool. The cutting
1 O7 }" {" ^8 J. d. Btool is either moved into position for the operation or the table is moved under the cutting tool.6 t# m+ E0 k6 K8 ~: c) j
Fixtures are used while performing milling, turning, honing, broaching, grinding and welding
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