摘要
为了解超声振动切削对切削温度的影响,促进该技术在炸药机械加工领域中的应用,对HMX基高聚物粘结炸药(PBX)模拟材料进行了传统切削和超声振动切削的对比试验,测试了已加工表面和刀尖区域的切削温度分布,分析了超声振动切削对切削累积热的作用机制。结果显示:两种切削方式的切削温度均随切削速度、切削深度和进给量的增大而增加,且超声振动切削的增加量更大,给定切削参数下的最高切削温度为78.1℃,较传统切削高31.3℃。分析表明:超声振动切削的生成热低于传统切削,散失热高于传统切削,激振热量的累积是造成切削温度高于传统切削的关键原因;当激振热量大于、等于或小于散失热与生成热变化量之和时,切削温度较传统切削升高、不变或降低。
In order to evaluate the effect of ultrasonic vibration cutting（ UVC）on cutting temperature（ CT）,UVC and conventional cutting（ CC）tests on HMX based PBX explosive simulants were carried out. CT of machined surface and cutting tool nose were detected by infrared thermal imager in the machining process. Results show that CT of the two method all increase with the cutting speed,cutting depth and amount of feed. And the cutting temperatures of UVC are all higher than that of CC. The highest CT of UVC is 78. 1 ℃,higher than that of CC by 31. 3 ℃. The cutting heat of UVC is less than that of CC,and the dissipated heat of UVC is more than that of CC. The main reason for the augment of CT is the cumulation of excitation heat in UVC,which plays a decisive role in final CT. It is possible to obtain a higher,unaltered or a lower CT of UVC compared to CC.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2014年第1期71-74,共4页
Chinese Journal of Energetic Materials
基金
中国工程物理研究院双百人才基金资助(ZX03008)
关键词
超声振动切削
传统切削
切削温度
红外热像仪
高聚物粘结炸药(PBX)
模拟材料
ultrasonic vibration cutting（UVC）
conventional cutting（CC）
cutting temperature（CT）
infrared thermal imager
polymer bonded explosive
explosive simulants
