轴类零件在磨削加工中温度影响的研究

Research on influence of temperature in grinding shaft

机械加工时所产生的切削热,使得工件发生热变形,从而影响工件的表面质量和尺寸精度。热变形的大小与加工方式、零件形状、材料以及应力等多种因素有关。文章主要通过对简单形体(半径为r0、长度为L的实心长轴)非均匀温度场、表面残余应力以及由此产生的热变形进行研究,了解非均匀温度场的热变形规律,并通过举例计算和实验分析,应用于磨削加工中,有利于提高磨削加工的效率和加工精度,这对于精密加工有着重要的意义。

The cutting heat produced in machining may result in thermal deformation,and accordingly the surface quality and dimension precision of workpieces will decrease. The degree of thermal deformation is related to the machining way,the shape, material and stress of the workpiece. In this paper,the research on the thermal deformation of long solid shaft(radius r_0,length L) in grinding is presented so as to compensate the thermal deformation during on-line machining, and then the efficiency and precision in manufacture can be improved. This study is important for precise machining.