Positioning and clamping device for automobile hub outer flange processing

Abstract

The invention discloses a positioning and clamping device for automobile hub outer flange processing and relates to the field of automobile hub processing. The positioning and clamping device comprises a chuck and three clamping pieces which are arranged on the top surface of the chuck in an annular shape around the axis of the chuck, and the three clamping pieces can synchronously stretch out anddraw back radially along the top surface of the chuck. The positioning and clamping device is characterized in that each clamping piece comprises a fan-shaped clamping jaw, the outer wall of each clamping jaw is provided with a plurality of steps which are arranged in the axis direction, the outer walls of different outer diameters of the clamping jaws are used for clamping the inner walls of automobile hub outer flanges in different sizes, the positioning and clamping device further comprises a positioning device arranged on the chuck, the positioning device comprises a plurality of bolstering blocks and angle positioning blocks, and the height of the bolstering blocks is adjustable so as to be flush with different step surfaces of the chuck. Clamping of the inner wall of an automobile hub outer flange can be realized, the processing accuracy can be improved, the clamping deformation of the automobile hub outer flange can be reduced, and the automobile hub outer flange of different model sizes can be conveniently processed.

Description

technical field [0001] The invention relates to the field of automobile wheel hub processing, in particular to a positioning and clamping device for machining the outer flange of an automobile wheel hub. Background technique [0002] In the drilling process of the outer flange of the automobile wheel hub, it plays a vital role in the processing and positioning of the flange product. If the punching position cannot be correctly positioned, the products produced must be unqualified products with partial holes. In the traditional processing method, the drilling process of the outer flange of the wheel hub generally uses the clamping method of the external clamping of the three-jaw chuck, and the clamping surface is to choose a thicker wall thickness to be finished or to retain the forged surface unprocessed surface. The forging surface of the clamped material will reduce the clamping accuracy of the workpiece, and the surface of the clamped material to be finished may cause t...

AI Technical Summary

Problems solved by technology

The forging surface of the clamped material will reduce the clamping accuracy of the workpiece, and the surface of the clamped material to be finished may cause the clamping deformation of the product and affect the subsequent processing

However, when using the internal expansion fixture to process the outer flange of the automobile wheel hub, when processing different types of products, it is necessary to replace the fixture and positioning device, resulting in cumbersome replacement of the fixture and large errors in the reassembly of the fixture and positioning device

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