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在设计和绘制夹具装配图时,经常会遇到夹具呈对称结构,或者是在夹具上有一些相同的零件或相同结构的零件组,呈规律性的重复出现。因此,使得夹具装配图上出现许多重复图样。而夹具装配图的作用主要是表示夹具的工作原理、各零件之间的相互位置及装配关系、以及安装时所需要的尺寸数据。可见对于那些对称结构的全貌及那些重复出现的相同零件或结构相同的零件组,在装配图上就显得有些繁琐。
When designing and drawing fixture assembly drawings, it is often encountered that the fixture is in a symmetrical configuration or that parts of the fixture that have the same parts or the same structure are regularly repeated. Therefore, many repetitive patterns appear on the fixture assembly drawing. The role of fixture assembly diagram is mainly that the working principle of the fixture, the mutual positioning of the parts and the relationship between the assembly, as well as the installation of the required size data. Visible for those who view the symmetry of the structure and those who repeat the same parts or structure of the same parts group, the assembly diagram is a bit cumbersome.