一次走刀立铣加工优化与CAM软件开发

DEVELOPMENT OF OPTIMIZATION STRATEGIES AND CAM SOFTWARE FOR SINGLE PASS END-MILLING OPERATION

研究了数控机床一次走刀立铣加工的计算机辅助优化与CAM软件的开发。基于最大生产率原则建立了数控机床一次走刀立铣加工的优化数学模型,采用数学分析与图形表达结合的方法开发了一种全局优化策略与CAM软件。这种优化策略不仅能够获得全局最优解,缩短优化时间,而且也适用于以最低成本为目标的优化过程。试验验证了该优化策略不仅具有比手册数据更好的经济性,还可以评估及改善机床性能。

The optimization of cutting conditions to increase the economic performance of a machining operation is becoming increasingly important in modern computer aided manufacturing (CAM). Optimization strategies and CAM software for the selection of economic cutting conditions in single pass end-milling operations on CNC machine tools are discussed. The optimization model is developed using a deterministic approach involving mathematical analysis and graphical representation and based on the maximum production rate criterion. The resulting optimization strategies apply equally for the criterion of minimum cost per component. Numerical studies show that the optimization strategies not only ensure the global optimum solution, but also require short computer processing time to performing the CAM software, making them suitable for online CAM applications. Experiments have demonstrated the economic benefits of using these strategies over handbook recommendations as well as in assessing, selecting and improving machine tool design specifications.