42CrMo钢高精度主轴加工工艺研究

Research on High Precision Spindle Processing Technology of 42CrMo Steel

42CrMo钢高精度主轴是矿用液压钻机动力头的关键件,其整体设计结构及加工工艺较复杂,各表面尺寸精度高、加工工序繁多,高质量成品的控制难度较大。传统的主轴加工过程中关键的尺寸、形状、位置精度时常超差,一次加工合格率较低。为有效提升高精度主轴的加工效率和保证加工质量,在传统加工工艺不足的基础上进行了系统的科学研究分析,探索了新的加工工艺路线及关键尺寸精度的控制方法,最终保证了动力头主轴的成品加工质量、降低了加工成本、提升了加工效率,主轴一次加工合格率高达100%。

The high precision spindle made of 42CrMo steel is a key component of the power head of mining hydraulic drilling rig.Its overall design structure and processing technology are complex,with high surface dimensional accuracy and numerous processing procedures,the control of high quality finished products is difficult.In the traditional spindle machining process,the accuracy of key dimensions,shapes and positions often exceeds the tolerance,and the one-time machining qualification rate is low.In order to effectively improve the machining efficiency and ensure the machining quality of high precision spindle,conducted systematic scientific research and analysis on the basis of the shortcomings of traditional machining processes,explored new machining process routes and control methods for key dimensional accuracy,ultimately ensuring the finished machining quality of the power head spindle,reducing machining costs,and improving machining efficiency.The one-time machining qualification rate of the spindle is as high as 100%.