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發(fā)表于 2011-5-11 15:21:19
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本帖最后由 伊凡 于 2011-5-11 15:21 編輯
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8 Z% @# _) n" A5 a' \& L2 oA jig is a device, which holds and supports the work and also guides the path of the
. Z- T3 \8 }! e* Icutting tool, as the operation is performed. Jigs are used extensively for operations such as
$ L9 @; @, ?0 O" j' cdrilling, reaming, tapping and counter-boring. The jig need not be secured to the machine.1 G# u8 V4 F, e) t1 j2 L" P# W
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A fixture is a device which locates and holds the work securely in a definite position. It
; s& H( P6 i. jis usually secured to the table of the machine and it does not guide the cutting tool. The cutting1 G3 K- Q7 b" N* K% y
tool is either moved into position for the operation or the table is moved under the cutting tool.
; s" {4 ]4 n3 f: E( ZFixtures are used while performing milling, turning, honing, broaching, grinding and welding* e& ^8 u0 E$ A/ s6 `/ }0 S( Y2 o+ i
operations.+ J; |& {7 q! G+ a: h$ ~! w
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