基于在机测量的一体式行星框架工艺优化

Process optimisation of one-piece planetary frames based on On-machine measurements

行星框架分布着数量众多的位置度、尺寸精度要求极高的孔,现有加工工艺难以满足其形位公差要求。为了解决这一问题,引入在机测量技术优化加工。首先,基于一体式行星框架的加工工艺制定在机测量方案,规划加工基准和孔的测量路径,确定加工误差。然后分析基准与孔的位置关系并综合孔径计算补偿值,及时调整加工参教修正加工误差。以NYM 106A加工中心为实验平台对行星框架进行了在机测量和补偿加工,验证了在机测量的精确性和补偿加工的有效性,说明在加工过程中引入在机测量技术可优化加工工艺,提高加工精度。

As a core component of the new generation of armoured vehicle transmission components,the machining quality of the one-piece planetary frame has an important impact on the performance of the vehicle.The planetary frame has a large number of bore features,which are characterised by high positional and dimensional accuracy requirements,and the existing machining process makes it difficult for the machining quality to meet the dimensional requirements.In order to solve this problem,in-machine measurement technology is introduced to optimise the measurement process as an important means of ensuring the quality of the planetary frame machining.Firstly,an on-machine measurement programme is developed based on the machining process requirements for one-piece planetary frames,the measurement paths for machining datums and hole features are planned and machining errors are obtained using on-machine measurement techniques.Then the relationship between the datum and the bore is analysed and the bore diameter is integrated to calculate the compensation value,so that the machining error can be corrected in time by adjusting the machining parameters.The NYM 106A machining centre was used as the experimental platform to carry out on-machine measurement experiments and compensated machining experiments on planetary frames,verifying the accuracy of on-machine measurement and the effectiveness of compensated machining.