The Aspherical Milling Mill Design And Cnc Machining Trajectory Algorithm Module Development,

With the development of the scientific and technology, the optical aspheric parts are playing more and more important role in various optical equipments. How to produce the optical aspheric parts in high quality is very critical problem concerned by the personnel who engaged in the optics research work. The traditional producing method of the optical aspheric parts cannot meet the demand of scientific research any more. T he m ethod t hat bring num erical control a nd o ptical p recessing technology together can both improve the accuracy of the parts and enhance the efficiency, and it will become a main trend.In the research, one CNC machine tool -- mill grinding machine( XM-50)which is suitable for the manufacture of the optical aspheric parts, is designed and developed based on the very background. In the paper, the mechanical structure and the technical parameters of the machine are discussed first, and the key part is analyzed. Then the computer numerical control system of the machine is introduced. The research and development of the tool path algorithm model is emphasized. The bi_arc fitting algorithm is used as the academic basis to produce the aspheric lens in high quality. A algorithm with overall convergence combined Newton's iteration method with descend method (one dimension linear searching method) was used to get the roots of nonlinear equations, providing mathematics guarantees for separating curve by local coordinate method with equal error. At the end, by using the NC program outputted by the algorithm model, a practical cutting experiment is realized on the machine. It is proved that, the precision of the Len can be meet, and the milling grinding machine tool can be used as the equipment of machining the optical asphericlens.Main works accomplished in this research are as follows: the total mechanical construction design of machine( XM-50) the finite element analysis of the clip system of machine( XM-50) the development of algorithm module software of aspheric parts the test of machine( XM-50) and an example of the processes of aspheric parts...