在机、电类零件生产中，经常遇到薄壁铜、铝、钢套，由于零件在装夹时极易变形，生产效率又低，我厂在生产实践中设计一种结构简单，并能自动夹紧的车夹具如图所示。夹具体2和拉杆卫的尺寸可与加工的薄壁工件内孔尺寸相配合，在拉杆和夹具体之间嵌置合适的O形环（O形密封圈）， In the machine, electrical parts production, often encountered in thin-walled copper, aluminum, steel, because the parts easily deformed in the folder, the production efficiency and low, I plant in the production of a simple structure design, and can Automatic clamping car fixture as shown. The dimensions of the clip body 2 and the rod guard can be matched with the inner hole size of the processed thin-walled workpiece, a suitable O-ring (O-ring) is embedded between the rod and the clip body,