Fast Calculation Method of Grinding Wheel Profile and Position for Grinding Cylindrical Spiral Grooves
In the NC grinding process of the helical groove in end mills,the installation position of the grinding wheel has a significant influence on the cross-sectional parameters of the helical groove,such as rake angle,core radius,and groove width,which will directly affect the cutting performance of the tools.The accurate and efficient solution of the grind-ing wheel pose is the primary task of the helical groove grinding process.Currently,most of the grinding wheel position solu-tion adopts the iterative optimization calculation method,which has the problem of insufficient accuracy and efficiency of the calculation model.Therefore,based on the analysis and research of the model,a new optimization calculation method is a-dopted.According to the formation mechanism of core radius,the relative pose of the grinding wheel and workpiece is trans-formed by the contact principle,and the pose parameter expression that can guarantee the core radius in advance is ob-tained,which reduces the variable dimension of pose parameter and improves the calculation efficiency.The analytical ex-pressions of the rake angle and groove width are derived.The numerical optimization algorithm can accurately calculate the grinding wheel positional parameters.The algorithm is verified by simulation and grinding test,and the results show that the proposed algorithm can calculate the grinding wheel position parameters accurately,with small error compared with the pre-designed value,and the computational efficiency is higher compared with the iterative method,which has high engineering practicability.
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维普
