根据焊接的基本知识和焊接机架的结构,建立焊接机架部件划分规则,将焊接机架分解成部件、支撑杆件和独立杆件等组成部分.通过分析焊接顺序与焊接变形的关系,建立机架部件中杆件的焊接顺序确定规则和机架总装焊接中机架部件与其他杆件的顺序规则,实现机架整体焊接顺序的自动生成.并结合一个实例说明了算法的实现过程. According to the basic knowledge of welding and the structure of welding rack, the rules of welding rack component division are established, and the welding rack is decomposed into components, supporting bars and independent bars etc. By analyzing the relationship between welding sequence and welding deformation, The rules of the welding sequence of the parts in the frame parts and the rules of the parts of the frame assembly with other bars in the assembly process of the frame assembly are automatically generated so as to achieve the overall welding sequence of the frame. An example is given to illustrate the realization process of the algorithm.