不同磨削工况下成形磨齿温度场的研究

摘要

Based on the theory of FEA , temperature field of gear form grinding has been analyzed transiently between dry and wet grinding conditions , and the variations of dry and wet grinding temperature followed with time of a certain node in the grinding zone have been discussed . The study shows that in the process of gear-grinding machining , the highest temperature occurs at the end of the tooth surface and beside the tooth root , where grinding burn easily occurs . Under the two kinds of grinding conditions , grinding temperature rises rapidly , and dry grinding temperature rising rate is larger . However , the wet grinding and dry grinding temperature descending rates are almost the same .%本文基于有限元分析理论，对干磨和湿磨两种磨削工况下的成形磨齿温度场进行了瞬态分析，并讨论了磨削区某一节点处干磨和湿磨温度随时间的变化情况。研究表明，磨齿加工过程中，齿面末端靠近齿根处温度最高，非常容易出现磨削烧伤。两种磨削工况下，磨削温度迅速升高，并且干磨温升速率大，但是湿式磨削温度和干式磨削温度下降速率几乎相同。