论文部分内容阅读
激光辅助加热切削是解决陶瓷类硬脆材料难加工问题的有效方法。为研究工艺参数的选取对脉冲激光辅助切削陶瓷加工效果的影响,建立了脉冲激光加热辅助切削Al2O3陶瓷传热模型,求解不同参数组合下工件温度场分布。根据Al2O3陶瓷温度在1000K以上时的软化层尺寸选取理论上合适的切削用量;采用激光参数和切削用量开展切削试验,统计试验切除率,检测加工表面粗糙度和表面形貌,探讨试验切除率与加工表面粗糙度之间的关系,结果发现采用温度场模拟获取的工艺参数能够获得较高的加工质量和切除效率。研究表明通过模拟温度场分布从而选取切削工艺参数,能有效保证脉冲激光辅助加热切削陶瓷类硬质脆性材料的工艺要求。
Laser-assisted heating and cutting is an effective method to solve the difficult problem of hard and brittle ceramic materials. In order to study the influence of process parameters on the machining efficiency of pulsed laser assisted cutting, the pulsed laser heating assisted cutting Al2O3 ceramic heat transfer model was established to solve the temperature field distribution under different parameters. According to the size of softening layer when the temperature of Al2O3 ceramic is above 1000K, the suitable cutting dosage is selected theoretically. The laser cutting parameters and cutting parameters are used to carry out the cutting test. The resection rate is calculated and the surface roughness and surface morphology are examined. The results show that the process parameters obtained by the temperature field simulation can obtain high processing quality and removal efficiency. The research shows that by simulating the distribution of temperature field and selecting cutting process parameters, it can effectively ensure the process requirements of pulsed laser assisted heating and cutting of ceramic hard brittle material.