摘要
高速点磨削技术在装备制造业中已得到广泛的应用.通过考虑点磨削变量角α对于磨削加工中转移到工件表面热量流的影响,加载移动热源来模拟温度场分布和最高温度,并分析受此温度场影响的零件亚表面的厚度.设计正交试验进行高速点磨削加工,测量不同加工参数下得到的表面硬度,以此验证工件表面温度场仿真及得到磨削参数对于零件表面硬度影响的主次因素.结果表明,倾斜角α的引入降低了温升;切削深度则是导致磨削区域温度升高的主要因素;当工件表面的温升达到某一温度值时,会使零件的硬化层变质,破坏硬化效应.
The technology of high speed point grinding has been widely used in the equipment manufacturing industry.The real temperature field distribution and the highest temperature could be simulated with loading the moving heat source by considering the effect of the swivel angle α on the heat flow transferred to worksurface,and the thickness of affected layer at the subsurface was also analyzed.The orthogonal test for high speed point grinding with different grinding parameters was designed to get the real surface hardness,which could verify the work-surface temperature field simulation and acquire the sensitivity parameters for surface hardness.The results show that the temperature rise is reduced by introducing swivel angle α,and the cutting depth is the main factor for temperature rise in grinding area;and with the temperature heaving and achieving a certain value,the component＇s hardening layer will be changed and the hardening effect will be destroyed.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第3期414-417,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(50775032)
中央高校基本科研业务费专项资金资助项目(N100603006)
关键词
高速点磨削
硬度
热源
温度场
磨削淬硬
high speed point grinding
hardness
heat source
temperature field
grind-hardening
