摘要
介绍了一种高效深磨的磨削热模型———圆弧热源模型 ,该模型和直线倾斜平面模型相比改进了温度的预测 ;给出了圆弧热源磨削温度的积分公式和量纲一温度计算式 ;详细分析了热流量 ,推导了工件、砂轮、磨削液和磨屑的对流因子计算公式 ,在此基础上给出了最大接触温度的计算公式 ;使用J形热电偶测量了磨削接触面接近磨削烧伤时的最高磨削温度和磨削液沸腾的温度。实验结果与理论计算值对比表明 。
A grinding thermal model was presented for high efficiency deep grinding, that was the circular arc heat source model. The circular arc thermal model improves temperature estimation. The integral expression of temperature is given for the circular arc feat source model. We also give a dimensionless temperature formula. The grinding heat flux is analyzed in detail. The calculation formulas of convection factor are given for the workpiece, wheel, grinding fluid and chip. The calculation formulas of maximum contact temperature are given. Maximum contact temperature in near burn out conditions and boiling temperature of fluid are measured by J-type thermocouple. The experimental results are compared with the calculation results, and they are agreement in the main.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2004年第22期2048-2051,共4页
China Mechanical Engineering
基金
辽宁省自然科学基金资助项目 ( 2 0 0 2 2 161)
辽宁省教育厅科学研究计划资助项目 ( 2 0 2 2 2 3 2 0 6)
关键词
高效深磨
磨削温度
热模型
磨削烧伤
high efficiency deep grinding
grinding temperature
thermal model
grinding burn-out
