Single-drive bidirectional parallel centering clamping mechanism

Abstract

The invention provides a single-drive bidirectional parallel centering clamping mechanism, and belongs to the technical field of automobile welding fixtures. The mechanism comprises a shell, a centering supporting block, a lead sliding block, a driving piece, a clamping jaw, a clamping jaw base and a bidirectional centering sliding block, wherein the centering supporting block is fixed to the top of the shell; two groups of base slideways are arranged at the top of the shell; the clamping jaw base penetrates through the base sliding ways, the part located outside the shell is connected with the clamping jaw, and the part located in the shell is fixedly connected with the bidirectional centering sliding block; limiting grooves and inclined faces are arranged on the inner side faces of the two bidirectional centering sliding blocks, and the inclined faces form an isosceles triangle groove; an isosceles triangle tip and a limiting block are arranged on the lead sliding block; the isosceles triangle tip is positioned in the isosceles triangle groove; the limiting blocks are symmetrically arranged on two sides of the tip end of the isosceles triangle, and the lead sliding blocks and the limiting plates are slidably connected with the limiting grooves in an inserted mode; the driving piece is used for driving the lead sliding block to move and apply force to the isosceles triangle groove. According to the invention, accurate centering of the double-engaging-lug welded workpiece in the automobile body can be achieved.

Description

technical field [0001] The invention belongs to the technical field of automobile welding fixtures, and specifically discloses a single-drive bidirectional parallel centering clamping mechanism. Background technique [0002] The car body is welded step by step by various scattered parts through auxiliary tooling, which can ensure the accuracy and quality of the car body. Fixtures are one of the indispensable auxiliary tools in the welding workshop, which can realize multiple functions such as positioning, clamping, and support. Among the parts that make up the automobile body, a type of parts with double connecting ears represented by the former subframe needs to be clamped by a centering clamping mechanism during welding. The current centering clamping mechanism includes a centering support And the jaws set on both sides of the centering support, the jaws can be close to or far away from the centering support, the double connecting ears of the workpiece to be welded are re...

AI Technical Summary

Problems solved by technology

[0003] However, in the current centering clamping mechanism, because the distance between the centering support and the jaws on both sides is difficult to keep consistent, the double connecting ears of the welding workpiece cannot be accurately centered with the centering support as the centering reference, resulting in welding The error becomes larger and affects the welding accuracy

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