A reverse-pull fixture device for processing thin-walled gearbox casings

Abstract

The invention discloses a reverse-pull type fixture device for processing a thin-walled gearbox case, comprising a fixed installation base plate, at least four steel ball locking hydraulic cylinders are installed on the top surface of the fixed installation base plate, and the to-be-machined Connection screw holes are formed on the bottom surfaces of the four side plates of the thin-walled gearbox case. It installs the traction bolt on the bottom surface of the thin-walled gearbox case, inserts the traction bolt into the top middle hole of the steel ball locking hydraulic cylinder, and pulls the traction bolt downward through the steel ball locking hydraulic cylinder to realize reverse operation. Pull-type fixing, the thin-walled gearbox case is fixed, and the fixed tension point and the support point are the same point, thereby reducing the clamping deformation of the thin-walled gearbox, and increasing the processing convenience. The finishing of all the precision elements of the thin-walled gearbox case ensures the machining accuracy of the thin-walled gearbox, and there are no parts that interfere with the machining of the tool during processing around the thin-walled gearbox, which is convenient for machining.

Description

Technical field: [0001] The invention relates to the technical field of gearbox manufacturing, and more particularly to a reverse-pull clamp device for processing a thin-wall gearbox case. Background technique: [0002] Due to the internal structure of many existing construction machinery, loading machinery, and forklift gearboxes, the boxes are mostly thin-walled (left and right boxes), and the box joint surface and internal bearing holes need to be processed during the processing. Most of the machine tools use multi-axis linkage machining centers, etc., with hydraulic (pneumatic) clamps and manual clamps, and the clamping methods are mostly hydraulic (air pressure) pressing plate pressing and manual bolt pressing plate pressing. [0003] The disadvantage of the prior art is that the gearbox body is mostly a thin-walled box body, which is easy to deform, and requires high precision for the machining of the joint surface and the positional degree between the shaft holes. In...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the existing technology is that the gearbox body is mostly a thin-walled box body, which is easy to deform, and the processing of the joint surface and the position accuracy of the shaft holes require high precision.

In order to ensure the quality of the parts, it is required that the finishing process should be completed in one clamping, but there are workpiece deformation, tool interference, and no clamping position when machining the joint surface during the clamping process (some parts set up a special clamping position for clamping) Clamping process boss) and other issues

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