Design Of A Grinding Machine For Glasses

Abstract

Modern grinding machines have a scanner and a grinding part. The aim of the problem is to compute and simulate the geometric control of the grinding machine depending of the results of the scan and of some parameters of the lens. The results and simulation are performed on characteristic forms such as rectangles and ellipses with different centers. 1 Introduction The report describes the general setup of the machine parts and the technical problems we had to deal with. We modelled the grinding of the shape of the lens and of a bevel on the edge of the lens. In general all glasses are made of one frame and two lenses with different strength. Because every customer who needs glasses wants to choose his individual frame and has individual eye-measures, lenses have to be grind precisely. Normally, lenses the optician buys from the manufacturer have the shape of a circle with optical center indicated by a crug. The optician has to grind the lenses so that they are symmetric and fit to the ..