伺服交叉孔零件磨粒流去毛刺仿真研究及试验验证

Simulation Research and Experimental Verification of Abrasive Flow Deburring for Servo Intersecting-Holes Parts

针对伺服机构交叉孔零件头部壳体存在的毛刺去除工艺效率低、去除均匀性、一致性差的问题,本文提出采用磨粒流去毛刺工艺。在工件内部结构分析、去毛刺加工路径规划的基础上,建立起各加工路径流道仿真模型,通过对比各入口流道组对应路径的流场特性优化得出较优加工路径,并在头部壳体工件上进行了磨粒流去毛刺验证试验。结果表明,在大孔出口处增加引流段结构、延长流道长度,可有效改善流道内部流线分布不均匀、流线压力相差较大的缺点,最终解决了加工中毛刺去除效果不一致的问题,并有效保护了入口与出口处的锐边。流道内部毛刺实现了去除,内部小孔道边缘出现倒圆,提高了工件的表面质量及使用性能。

Aiming at the problems of low efficiency,poor uniformity,and poor consistency of the existing burr removal process for the intersecting-hole parts top shell in the servo mechanism,a suggestion of using the abrasiveflow deburring process was proposed.Through the analysis of the internal structure of the workpiece and the planning of the deburring processing path,the runner simulation model of each processing path was established,and theflowfield characteristics of the corresponding path of each inlet runner group were compared,analyzed and optimized for better process path.Deburring verification experiments were carried out on the top shell workpiece.The results show that the uneven distribution of the streamline inside theflow channel and the large difference in the streamline pressure can be effectively improved by increasing the drainage section structure at the exit of the large hole and extending the length of theflow channel.Finally,the problem of inconsistent burr removal effect during processing can be solved and the sharp edges at the entrance and exit can also be effectively protected.After the experiment,the internal burrs of the runner are removed,and the edges of the internal small holes are rounded,which improves the surface quality and performance of the workpiece.