CAJ | 학술논문

以平面端铣削粗/精加工过程为研究对象，根据变频调速铣床主轴电机运行特点，提出分段空载功率函数模型，构建铣床粗/精加工总能耗模型及总生产率模型，并通过相应实验对模型进行完善。结合实际生产建立粗/精加工过程约束条件。选取企业实际生产案例，采用遗传算法对选定加工特征的粗/精端铣削过程进行全局多目标优化，并与传统只针对粗加工或精加工的局部铣削参数优化进行比较。实验结果表明，与优化前相比，局部优化后的粗/精加工总能耗下降了12.51%，全局优化后的粗/精加工总能耗下降了15.04%；局部优化后总加工时间缩短了18.48%，全局优化后总加工时间缩短了21.26%。
이평면단선삭조/정가공과정위연구대상，근거변빈조속선상주축전궤운행특점，제출분단공재공솔함수모형，구건선상조/정가공총능모모형급총생산솔모형，병통과상응실험대모형진행완선。결합실제생산건립조/정가공과정약속조건。선취기업실제생산안례，채용유전산법대선정가공특정적조/정단선삭과정진행전국다목표우화，병여전통지침대조가공혹정가공적국부선삭삼수우화진행비교。실험결과표명，여우화전상비，국부우화후적조/정가공총능모하강료12.51%，전국우화후적조/정가공총능모하강료15.04%；국부우화후총가공시간축단료18.48%，전국우화후총가공시간축단료21.26%。
With the research of surface end-milling for both of rough and finish processes,a piece-wise function concerned with CNC idle energy consumption was built considering the characteristics of variable volocity variable frequency(VVVF)machine tool.Mathematical models of energy consump-tion for rough and finish milling processes and processing efficiency were established.Related experi-ments were performed to test the models and the related constraints on rough and finish milling processes.Global optimization searching for the best combination of milling parameters were achieved using GA,moreover,the results were compared with that of the local optimization.The verified exper-iments show that the local optimization method can reduce 12.5 1% of the total energy consumption, and the reduction for global method is 15.04%.Meanwhile,the local optimization method can also cut 18.48% of the processing time and the reduction for global method is as 21.26%.