Shifting fork drilling fixture

Abstract

The invention discloses a shifting fork drilling fixture. The shifting fork drilling fixture comprises a first bottom and a second bottom, the second bottom is thicker than the first bottom and provided with a trapezoidal groove, the first bottom is provided with a groove and a threaded hole, a first positioning block and a second positioning block which are movable are mounted in the groove and connected through a spring, the initial length of the spring is smaller than the distance between two fork claws of a shifting fork, and a pressure plate is screwed into the threaded hole through a bolt to be fixed onto the first bottom. The shifting fork drilling fixture is reasonable in design, simple in structure and effective in clamping; the fork claws of the shifting fork are fixed by the first positioning block and the second positioning block, and a fork shaft is fixed by the pressure plate, so that simplicity and convenience in use are achieved without damaging the shifting fork, and subsequent drilling is facilitated; due to the fact that positions of the first positioning block and the second positioning block are adjustable, the shifting fork drilling fixture is capable of meeting the clamping requirement of different specifications of shifting forks.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a shift fork drilling jig. Background technique [0002] At present, there are a wide variety of products in the shift fork series of various models, with different specifications and a large output. A fork part such as figure 1 shown. The machining process of this part is as follows: Drilling and expanding the bottom hole of the boss - drawing the big hole of the boss - grinding the convex surface of the fork - correction - turning the arc groove - heat treatment of the fork - correction after heat - drilling pin hole. The wall of this part is thin and easy to deform during the processing process, and the dimensional accuracy of the product is required to be high. In mass production, there are problems such as difficulty in ensuring processing accuracy and low processing efficiency. Especially when drilling pin holes, the workpiece is usually clamped by a vise , ...

AI Technical Summary

Problems solved by technology

The wall of this part is thin and easy to deform during the processing process, and the dimensional accuracy of the product is required to be high. In mass production, there are problems such as difficulty in ensuring processing accuracy and low processing efficiency. Especially when drilling pin holes, the workpiece is usually clamped by a vise , but this clamping method is unstable, and it is easy to cause deformation of the clamping part after processing

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