Research On The Optimization Of Diamond Polishing Method And Its Application In Automatic Polishing Manipulator

The content of this paper is the key technology of soft polishing direction identification in diamond automatic polishing process,mathematical model of diamond polishing facets' anisotropy,soft polishing direction prediction technology and diamond automatic polishing manipulator control system.Firstly,proposed an automatic optimization algorithm to solve the problem that is caused by the diamond anisotropy in the automatic polishing,which can quickly and accurately identify the soft polishing direction of diamond polishing surface.Then,based on the brittle-ductile transition theory,put forward the arbitrary plane anisotropy mathematical model of diamond which is constructed by weighted superposition method,and according to the model simulation data the optimization algorithm is optimized.Finally,the diamond automatic polishing manipulator control system is designed to realize the application of the optimization algorithm in the diamond automatic polishing manipulator.First of all,we introduce the relevant knowledge of diamond polishing process.Then based on the continuity characteristics of diamond anisotropy,the automatic optimization algorithm is proposed as the solution to the problem met during diamond polishing process which is caused by diamond anisotropy.And the optimization parameters are optimized,so that the algorithm in the implementation of efficiency and accuracy are achieved the best.The reliability of the automatic optimization algorithm is verified by several comparative experiments.Based on the experimental data,the automatic optimization algorithm is optimized as an improved automatic optimization algorithm,which allocate the search time according to the degree of softness in each optimization direction,so that the polishing efficiency is improved obviously.Based on the brittle-ductile transition theory and the mathematical model of crystalline planes anisotropy of diamond,the mathematical model of arbitrary plane anisotropy of diamond is deduced theoretically by weighted superposition method.According to the geometrical dimensions of the diamond pavilion facets,the simulation model of the diamond pavilion facet is established.By comparing the experimental results and the simulation data,the accuracy of the model in obtaining the diamond anisotropy is verified.By using the simulation model,automatic optimization algorithm is further optimized as prediction optimization algorithm.The prediction optimization algorithm can obtain the anisotropic variation law on the other facets of the whole diamond by carrying out two times automatic optimization algorithm,which can realize the prediction of other facets soft polishing direction and greatly reduce the time that the process of the automatic optimization algorithm costs in the entire grinding process.In this paper,the mechanical structure and control system of diamond automatic polishing manipulator are studied,the method of polishing pressure detection and control system is put forward,the hardware circuit of control system is designed,and in order to improve the service life of memory,the cycle reading and writing algorithm is proposed.The diamond automatic polishing manipulator control system is designed by using embedded real-time operating system,and the research results of automatic optimization algorithm proposed in this paper are applied to realize the automatic polishing of diamond.The automatic grinding robot has been delivered to diamond processing manufacturers presently.