焊接工装，特别是薄板件点焊，要求数处夹紧，以防止工件变形，保证焊接质量。常用螺栓一压板夹紧装置，费时费力，操作不便，效率极低。采用快速的焊接夹紧机构，可获得较好的效果。附图所示夹紧机构是一个双摇杆四杆机构，利用四杆机构的死点位置压紧。使用时，将其焊接或紧 Welding tooling, especially sheet metal spot welding, requiring several clamping, to prevent the workpiece deformation, to ensure the welding quality. Commonly used bolts a platen clamping device, time-consuming and laborious, inconvenient operation, low efficiency. The use of fast welding clamp body, you can get better results. The clamping mechanism shown in the figure is a double-rocker four-bar mechanism which is pressed by the dead center position of the four-bar mechanism. When used, it is welded or tight