关键词: 球面, 研磨, 相对速度, 速度零点

Abstract:

Contour lapping method which was driven by two axes was studied. By using auxiliary triangle method, analytic result for the relative speed on four quadrants of the sphere and the computer program were brought out, then 3D curved faces were plotted to illustrate the speed distribution. With the help of computer program, zero speed point was searched. The results show that the zero speed point is located on the arc between two absolute speed zero points of rotation axes, and the necessity of relative speed zero point is demonstrated. From the location of speed zero point, some useful conclusions can be drawn. For some special parts, the speed zero point can be put out of the parts by adjusting speed ratio and tilt angle of two axes. So the adverse effects of zero point can be eliminated.

Key words: spherical surface, lapping;relative speed;speed zero point