大型薄壁深腔端框零件的车加工工艺分析

摘要

A new type of satellite carrying stent of the rocket, which is a large angle key structure with thin-walled and deep cavity, is treated as research object in this paper. On the vertical CNC lathe equipment, first, the NC program is developed based on the designed turning angle, with special machining tool and optimized process parameter;second, the cutting and thermal deformation of the part is controlled by process optimization, and the problems such as the deep cavity chip removal and cutter relieving are also considered. The machining result show that, the method developed in this paper can complete the complex parts processing and ensure the machining accuracy.%以某大型薄壁深腔大角度关键结构件为研究对象，在数控立车设备上，首先通过设计车削加工夹具，选用专用机夹刀具和选择合理的切削参数，其次通过工艺优化控制零件加工过程中的切削变形和热变形，并考虑了深腔出屑和让刀等问题。结果表明，本文方法可以实现该复杂零件的加工并保证其加工精度。