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汽车车身是由大型冲压件与钣金件等焊接而成。工件尺寸大、板薄,且多为空间曲面,致使焊接件刚度差,焊后变形大。为适应不同精度,不同施焊方法的要求,焊接胎具除了具有一定型面的胎架外,还需有定位装置,翻转装置等。其夹紧装置主要分手动快速夹具和气动夹具两种。本文对一些常用的典型胎具作一介绍。小件总成胎具小件总成,如脚踏板总成、风窗内外框总成等,由于其体积小、重量轻,精度要求不
Car body is made of large stamping parts and sheet metal welded together. Large workpiece size, thin board, and more space for the surface, resulting in poor stiffness of welding, welding large deformation. In order to meet the requirements of different precision and different welding methods, in addition to the welded tire with a certain shape of the tire rack, but also need positioning device, flip device. Its clamping device is mainly divided into two kinds of manual quick jig and pneumatic jig. This article describes some commonly used typical tire. Small parts assembly Small parts assembly, such as pedals assembly, window frame assembly, etc., due to its small size, light weight, accuracy requirements