本帖最后由 伊凡 于 2011-5-11 15:21 編輯 . R% i. k" n6 r! u
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A jig is a device, which holds and supports the work and also guides the path of the
$ K2 }& j. ]) f) |/ ?cutting tool, as the operation is performed. Jigs are used extensively for operations such as
. p. O' T; X4 N* Sdrilling, 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. It8 |, e0 F6 o3 [1 V9 v2 K. U" V
is usually secured to the table of the machine and it does not guide the cutting tool. The cutting2 X, P6 `; Y( s' Q- J: h0 K6 c
tool is either moved into position for the operation or the table is moved under the cutting tool.
( i0 C$ o% n6 u% C5 RFixtures are used while performing milling, turning, honing, broaching, grinding and welding/ I9 D" j" m6 P ]
operations.
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