履带式起重机履带架的加工质量和效率提升

Improvement of Processing Quality and Efficiency of Crawler Tracks of Crawler Crane

履带式起重机履带架的加工包括镗、铣、钻、攻多道工序,加工时需要进行多次翻转装夹,找正过程繁琐,各部位连接铰点孔精度要求较高,位置配合紧密,超差将会造成销轴无法安装,车架、驱动架等关键部位配合不上,修复困难。履带架目前存在加工效率低、加工后表面光洁度差、行走啃齿等质量问题,无法满足设计要求。因此,为提高履带架的加工质量和加工效率,结合现场设备性能、刀具、材质和人员技能水平等因素综合分析,提出防设计抖动工装以增强工艺系统的稳定性并提高加工效率、优化工艺路线的方法,使加工后的表面质量和形位公差满足设计要求。

The processing of the crawler track frame includes multiple processes such as boring,milling,drilling,and tapping thread.During the processing,multiple flipping and clamping are required,and the alignment process is cumbersome.The precision requirements for the connecting hinge holes of each part are high,and the positions are closely matched.If the tolerance is exceeded,it will cause the pin shaft to be unable to be installed,and key parts such as car-body and drive frame cannot be matched,making repair difficult.The track frame currently has low processing efficiency,poor surface finish after processing,and quality issues such as tooth gnawing during travelling,which cannot meet the design requirements of the drawings.Therefore,in order to improve the processing quality and efficiency of the track frame,a comprehensive analysis is conducted based on factors such as on-site equipment performance,cutting tools,materials,and personnel skill level.A method is proposed to design shaking-prevention tooling to enhance the stability of the process system and improve processing efficiency,optimize the process route,and achieve the effect of meeting the design requirements for surface quality and geometric tolerance after processing.