30mm内径空心车轴钻削用锥套结构尺寸优化与验证  

Modification and verification of taper sleeve used in deep-drilling of 30mm inner diameter hollow axle

作　　者：刘永彬[1] 邵松涛[1] 贺庆强[2] 

机构地区：[1]南车青岛四方机车车辆股份有限公司技术工程部,山东青岛266111 [2]中国石油大学(华东)机电工程学院,山东青岛266580

出　　处：《制造技术与机床》2015年第11期116-119,共4页Manufacturing Technology & Machine Tool

基　　金：企业科技开发项目(SF/JG-忠字-2014-257);青岛市科技计划基础研究项目(13-1-4-257-JCH)

摘　　要：通过对空心车轴自动定位装夹结构及其顶锥定位面的受力情况分析,优化了现有锥套结构的尺寸,并进行了空心车轴的钻削加工试验,在确定各工艺参数取值范围的同时验证了改进后锥套结构的可行性。结果表明,30 mm内径EA4T空心车轴深孔钻削的双顶锥定位装夹结构中可以采用8mm×90°的锥套;进给量0.12 mm/r、主轴转速600 r/min、切削液流量80 L/min、压力2~3.0MPa下钻削过程稳定,钻削后内孔轴线偏移量、尺寸精度及表面粗糙度满足设计要求。Automatic positioning and clamping frock used in deep - hole drilling of hollow axles and forces between interfaces of the taper sleeve and hollow axle are analyzed, the dimension of the exiting tape sleeve is optimized. Experiments are carried out to determine the reasonable value of deep - hole drilling parame- ters of EA4T steel hollow axle with a 30ram inner diameter, and to verify the feasibility of the modified taper sleeve. It is showed that taper sleeve with dimension of 8mm ~ 90~could be used in deep - hole drilling of 30mm inner diameter hollow axle, and the coaxially, dimension precision and roughness of deep- hole surface all satisfies the design requirements when feed rate is 0.12mm/r, spindle speed is 600r/min, cutting fluid flux is 80L/min and cutting fluid pressure is from 2.0MPa to 3.0MPa.

关 键 词：空心车轴 深孔钻削 锥套结构 钻削试验 

分 类 号：TH162[机械工程—机械制造及自动化] TG754[金属学及工艺—刀具与模具]