摘要
在硬质合金磨削中,磨削能大部分转化为热量,导致磨削区温度升高,出现磨削烧伤和磨削裂纹等磨削缺陷问题。利用ANSYS中的载荷加载法以及单元生死技术对磨削过程进行温度仿真分析,得到硬质合金磨削温度场的整体分布规律,研究了不同工况条件下磨削区和已加工表面的温度变化。将仿真结果与试验测得结果进行对比,两者结果具有很好的一致性,说明采用仿真对磨削温度进行预测是可行的,随着工件进给速度的增大,仿真温度与试验温度越相近。根据仿真温度,可以更好地减少磨削缺陷,提高工件加工质量。
In the cemented carbide grinding, most grinding energy is converted into heat,leading to thetemperature in- crement in the grinding zone, grinding defects such as grinding burn and grinding cracks problems that would arise. Using application method forloads with ANSYS and element birth and death technology of grinding temperature simulation analy- sis, get the overall distribution of carbide grinding temperature field, studied the grinding zone under different working con- dition and has processing surface temperature changes. The simulation results and the experimental measured results were compared, both resuhs have good consistency, and that the simulation is feasible for prediction of grinding temperature, with the increase of the workpiece feed speed, simulation and test temperature have more similar. According to the simulation temperature, it can be better to reduce the occurrence of grinding defects, to improve the machining quality of workpiece has a realistic significance.
出处
《工具技术》
北大核心
2017年第5期22-25,共4页
Tool Engineering
基金
国家自然科学基金(51265005)
贵州大学研究生创新实践基地建设项目(贵大研CXJD[2014]001)
关键词
硬质合金
磨削
温度仿真
单元生死技术
磨削缺陷
carbide
grinding
temperature simulation
element birth and death
grinding defects
