A flexible positioning and combined locking rough turning fixture for large thin-walled flanges

Abstract

The invention relates to a turning fixture, in particular to a flexible positioning and combined locking type rough turning fixture for a large thin-walled flange, including a chassis and a flexible positioning device for positioning the end face of a flange blank, and for simultaneously clamping the inner flange The floating clamping device of the hole and the outer circle, the combined locking device used to fix the flexible positioning plane of the flexible positioning device; the flexible positioning device includes a soft rubber positioning plate installed on the chassis and several The end face of the soft rubber positioning plate is vertical to the rigid guide post, the upper end of the rigid guide post is integrated with the soft rubber positioning plate, and the combined locking device is connected to the lower end of the rigid guide post for alignment. Locking and loosening of rigid guide posts. The invention realizes the positioning and fixing of the flange in a free and non-deformed state, and the flatness of the processed flange plane is good, which can be used as a high-quality positioning reference plane during continuous finishing.

Description

technical field [0001] The invention relates to a vehicle clamp, in particular to a flexible positioning and joint locking type rough vehicle clamp for a large thin-walled flange. Background technique [0002] Flanges are widely used in industrial equipment, and the most commonly used flange material is carbon steel. In many important applications, flanges are required to have high dimensional accuracy and geometric tolerance accuracy, including better roundness of the inner and outer circles of the flange, better flatness of the flange itself, and better flatness of the flange itself. The hole and the outer circle must have good concentricity, the upper plane and the lower plane of the flange must have better parallelism, etc. [0003] In the prior art, for the processing of large thin-walled flanges, a vertical lathe is usually used for lathe processing, specifically, a universal chuck or a special clamping tool installed on the vertical lathe workbench is used to fix the...

AI Technical Summary

Problems solved by technology

At present, when the existing lathe processing technology is used for rough turning of the flange, the clamping generally adopts a four-jaw or three-jaw chuck to clamp the shape or the inner hole, and at the same time, the blank end face of the lower end of the flange is supported by a height adjustment screw. This clamping method cannot avoid the deformation of the inner and outer circles of the flange and the plane of the flange, which will bring great troubles to the subsequent finishing turning process, making the positioning reference of the flange during the finishing turning bad, and easily causing the finishing turning. Out of tolerance of roundness and flatness of back flange

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