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在非圆行星齿轮液压马达中,有3根相互平行的圆柱形联接销,两端都被芯部组件和壳体的盲孔所包含。联接销在装配时处于密室中,按照现有的正向装配方法,芯部组件在壳体上方,联接销装配难度大。提出了逆向装配的新方法,将壳体调转到芯部组件的上方,进行联接销的装配。根据马达的公差设计,计算了2种方法中联接销及其对应盲孔的最大实体实效尺寸,结果表明联接销的装配工艺性得到有效的改善。开展了对比性的装配试验,结果表明,采用新方法后,该工序的平均时长缩短了70%以上。
In a non-circular planetary gear hydraulic motor, there are three parallel cylindrical coupling pins, both ends of which are covered by blind holes in the core assembly and the housing. The coupling pin is in the chamber when assembled. According to the existing positive assembly method, the core component is above the housing, and the coupling pin is difficult to assemble. A new method of reverse assembly is proposed, which transfers the housing to the top of the core assembly for the assembly of the coupling pin. According to the tolerance design of the motor, the maximum physical effective size of the coupling pin and its corresponding blind hole in the two methods is calculated. The result shows that the assembly technology of the coupling pin is effectively improved. A comparative assembly test was carried out and the results showed that the average duration of the process was reduced by more than 70% with the new method.