平面研削における形状精度に関する研究

研削熱による曲げ変形の影響

抄録

The thermal deformation of a workpiece during grinding is one of the most important factors that affect a flatness of a ground surface. This paper represents an approximate analysis method of the thermal deformation during one-pass surface grinding. In the analysis a simple model of the stress distribution, based on the results of a finite element calculation, is applied. The analyzed results are compared with profiles of ground surfaces. The main results obtained are as follows: (1) The tangential thermal expansion of a workpiece surface causes a bending moment on the workpiece. (2) The bending moment causes a convex deformation of the workpiece and it leads to a concave profile of the ground surface. (3) The shape of the ground surface has a good agreement with the analyzed deformation of a workpiece.