32 Lathe the common fixture structure characteristics and use

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Lathe fixture used to determine the correct position of the workpiece in a lathe, and clamp the workpiece, and occupies a very important position in the turning process. Used lathe folder has:
1) universal fixture. Such as the three-jaw chuck, four ja w chuck, and various forms of thimble.bearing manufacturers
2) adjustable fixture. Group fixture, modular fixture.
3) special fixture. Actual use to meet a procedure of a workpiece fixture, such as the rotating turret.
Production to ensure product quality, improve production efficiency, reduce labor intensity, should be the correct choice and use of jigs.
Lathe fixture
1. Improve processing accuracy, and ensure the quality of products
Lathe jig ensure parts processing technology requirements as specified in dimensional accuracy, surface roughness and an important measure of the accuracy of the relative positions between the respective surfaces.
The correct selection of the lathe fixture is manufacturing precision and structure suitable fixture. Such as to ensure the parts machined surface datum concentricity requirements, a variety of self-centering jig can choose: low c oncentricity requirements available three-jaw chuck, four jaw chuck concentricity requirements available when soft jaws, cone mandrel, circlip and liquid plastic clamp, etc..SKF bearing
2. Improve labor productivity
Fixture using a certain structure, can significantly improve the production efficiency. Fixture to improve the productivity in production, usually by the following structural forms:
1) Fast clamping and removal fixture can reduce the auxiliary time and reduce labor intensity.
2) using a dedicated positioning pieces, is a special fixture, you can shorten the time of adjustment and correction. 3) the number of fixtures, the second fixture multiple parts can be processed, to shorten the production time of a single piece.
4) the automatic control fixtures, such as hydraulic cam or program control, "one machine" operating.
3. Give full play to the performance of t he machine  china bearing company
Using special fixture can expand the scope of the use of machine tools, in order to achieve a more versatile machine. Such as a conventional lathe configure a special rotating turret can be processed ball configure a swing turret type surface of the blade can be processed.