High speed lapping paraboloid by means of a lapping tool bending method

Abstract

This paper discusses a new lapping paraboloid method which combines high speed lapping technology with solid abrasives and lapping tool bending method. In this method a bending moment is acted on lapping tool with solid abrasives, which makes the tool bend and form a shape on its working surface which is same the as generant of workpiece shape. This kind of tool is used to form lap.Keywords: High speed lapping, lapping tool, bending, paraboloid Increasing, with the development of science and technology, the requirements for optics systems become higher and higher, e.g. good quality of imaging, little loss light energy, small size, light weight etc. It is difficult to reach above requirements by using traditional sphere lens/mirrors optics systems. Aspheric optics elements can be used to solve these problems very well. In optics systems, by using aspheric optics elements, the number of optics elements can be reduced, the system structure can be simplified, the weight and size of the system can be reduced, light energy loss can be reduced too, imaging errors can be avoided and imaging quality can be improved. Paraboloid is a kind of surface using widely within all kinds of aspheric surfaces. The main purpose of this paper is to introduce a method of lapping this kind of surface at high speed.

Nanometer lapping technology at high speed

“…They are [1][2][3][4] : 1) Because the abrasives are fixed on the lapping tool, there is no abrasives splashing problem, the lapping tool rotating speed is high, and the machining efficiency is high. 2) There is no mixture problem of the abrasives with the chips from the workpiece in lapping (see Figure 2).…”