考虑磨削余量分配的齿轮钢磨削工艺优化  

Optimization on Grinding Process of Gear Stell Considering Allowance Distribution

作　　者：黄身桂[1,2] 栾晓圣 言兰[1] 陈首虹[1] 姜峰[2] 

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021 [2]华侨大学制造工程研究院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2016年第4期401-405,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学青年基金资助项目(51405168);福建省自然科学基金面上资助项目(2016J01237);华侨大学高层次人才科研启动项目(13Y0385;13Y0386)

摘　　要：以40CrNiMo钢为研究对象,对原有磨削工艺进行优化,探讨减少工作台进给次数、去掉半精磨工艺对磨削质量的影响.结果表明:原有粗磨+半精磨+精磨工艺改为粗磨+精磨两道工艺是可行的,且在保持总磨削余量一定的条件下,通过减少工作台进给次数的方法可以降低粗磨过程多次走刀造成的磨削表面硬化,同时提高了加工效率;粗磨产生的磨削表面硬化对降低半精磨、精磨后的磨削表面粗糙度有利,但表面硬化伴随着磨削亚表层金相组织变化和残余应力等不利因素.The effects of reducing frequency of strokes and eliminating semi-fine grinding process on the grinding quality of 40CrNiMo gear steel were investigated.It was found removal of the semi-fine grinding process from existing coarse/semi-fine/fine processing sequence is feasible and at a constant total grinding al-lowance,a decrease of strokes number can successfully reduce surface hardening and subsequently improve the machining efficiency.It was also evidenced that the surface hardening left by coarse grinding can reduce the surface roughness of semi-fine and fine grinding however the undesirable sub-surface damage and residual stress would associate.These findings are of practical significance for optimization of grinding process.

关 键 词：磨削工艺 余量分配 加工效率 40CRNIMO钢 表面质量 

分 类 号：TG5[金属学及工艺—金属切削加工及机床]