Pneumatic milling fixture for pantograph carbon slide plate assembly

Abstract

The invention discloses a pneumatic milling fixture for a pantograph carbon slide plate assembly. The pneumatic milling fixture comprises a fixture bottom plate, an aluminum bracket and a workpiece, wherein the aluminum bracket is arranged on the inner side of the workpiece in a sleeved mode, and the fixture bottom plate is provided with a plurality of clamping devices and support devices matchedwith the clamping devices; and the support devices comprise movable support devices and fixed support devices. The clamping devices act on the left side, the right side, the middle part and the arc-shaped bending parts of the aluminum bracket, the movable support devices are positioned under the clamping devices acting on the arc-shaped bending parts of the aluminum bracket, and the fixed supportdevices are positioned under the clamping devices acting on the left side, the right side and the middle part of the aluminum bracket. A plurality of clamping devices are arranged, and preferably morethan three clamping devices are arranged. As a pantograph carbon slide plate workpiece is elongated and the local part has a certain degree of bending, the corresponding movable support devices and the corresponding fixed support devices are matched under the clamping devices, and the clamping stability is ensured.

Description

technical field [0001] The invention relates to the field of fixture technology equipment, in particular to a pneumatic milling fixture for a pantograph carbon slide plate assembly. Background technique [0002] The lifespan of the high-speed rail pantograph is 24,000 kilometers, and the bow is basically replaced once a week. According to the number of high-speed trains in my country, the consumption of pantographs is considerable. Therefore, ensuring the production of high-speed rail fishing bows is of great significance to ensuring the safe operation of high-speed rail. [0003] The pantograph must withstand the huge wind force, the strong friction with the high-voltage wires, and the occasional impact. Therefore, the working surface of the pantograph is made of carbon, copper, fiber and other materials. The material has certain lubricity, impact resistance, and sufficient strength. However, the pantograph is relatively slender. For example, the length of the CRH380A pa...

AI Technical Summary

Problems solved by technology

However, the pantograph is relatively slender. For example, the length of the CRH380A pantograph carbon slide is 1200mm, the width is only 40mm, and the thickness is about 40mm. This slender shape brings great trouble to machining, and it is easy to Cause deformation, jitter, premature tool wear, etc.

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