变速箱连接座是装载机上连接变速箱体与后车架的一个重要部件（图1）。变速箱的质量通过连接座传递到支承座上，用螺栓连接后使变速箱得以牢固和稳定。以往加工制造时，主要靠人工划线组焊和划线钻孔。这种生产工艺势必造成各零件的位置找正困难，由此引起的部件废品率也很高， The gearbox connector is an important part of the loader that connects the transmission case to the rear frame (Figure 1). The mass of the gearbox is transmitted to the seat via the connecting seat and bolted to make the gearbox firmer and more stable. In the past, when processing and manufacturing, mainly rely on crossed scribing and crossed drilling. This production process is bound to cause the various parts of the position is difficult to find, resulting in parts rejection rate is also high,