CAJ | 학술논문

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。
위료해초성진동절삭대절삭온도적영향，촉진해기술재작약궤계가공영역중적응용，대 HMX 기고취물점결작약（ PBX）모의재료진행료전통절삭화초성진동절삭적대비시험，측시료이가공표면화도첨구역적절삭온도분포，분석료초성진동절삭대절삭루적열적작용궤제。결과현시：량충절삭방식적절삭온도균수절삭속도、절삭심도화진급량적증대이증가，차초성진동절삭적증가량경대，급정절삭삼수하적최고절삭온도위78．1℃，교전통절삭고31．3℃。분석표명：초성진동절삭적생성열저우전통절삭，산실열고우전통절삭，격진열량적루적시조성절삭온도고우전통절삭적관건원인；당격진열량대우、등우혹소우산실열여생성열변화량지화시，절삭온도교전통절삭승고、불변혹강저。
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.