为适应工程机械批量生产,工程机械钢结构件的组装技术在不断改进,如何解决焊接变形问题,目前产生了用胎架来组装焊接结构件的新方法。工程机械钢结构件是多种多样的,其组装胎架各有不同,但都不外乎由定位元件、夹紧元件和支承底座三部分组成。一、常用的表面定位元件1.以平面定位的定位元件(见图1); In order to adapt to the mass production of construction machinery, the assembly technology of steel structural parts of construction machinery is continuously improving. How to solve the problem of welding deformation has resulted in a new method of assembling welded structural parts using a tire frame. The structural steel components of construction machinery are various, and their assembled tire frames are different, but none of them are composed of three parts: a positioning element, a clamping element and a support base. First, the commonly used surface positioning element 1. Plane positioning positioning element (see Figure 1);