摘要
针对复杂零件工艺方案全局优化难题,在现有计算机辅助工艺设计(CAPP)成果和优化方法的基础上进行创新,提出一种复杂零件工艺方案全局多层并行优化方法,建立该方法的组成结构,从加工序列、机床、刀具、切削参数以及选择与进化、综合评价等多个层面对工艺方案进行全局并行优化。提出用集合与矩阵构造工艺方案动态基因组和染色体的方法,将复杂的工艺优化问题转变为对集合和矩阵的数学运算。采用分层、加权、综合、抽象和归一化方法构造多工艺方案、多因素、多目标、多约束的工艺方案综合评价模型。根据工艺方案编码的特点,构造与之对应的染色体优化算子和动态基因组优化算子。结果表明,此方法具有良好的实用效果,满足复杂工程应用的实际要求。
Global multilayer and parallel process optimization method is proposed based on the existing CAPP and other optimization methods for the global process optimization problem of complex components. The structure of the method is established to carry out global and parallel optimization from process and operation sequence, machine tool, cutting tool, cutting parameters, selection and evolution, comprehensive evaluation and many other aspects. Based on set and matrix, dynamic process genome and chromosome are established to transform complex process optimization to mathematical operation of set and matrix. A comprehensive evaluation model of multi-scheme, multi-factor, multi-target and multi-constraint is built by the method of delamination, weighing, synthesis, abstraction, and normalization. According to the trait of process coding, chromosome optimization operator and dynamic genome optimization operator are designed. The results show that this method has good practical effect, and meets the practical requirements of complex engineering application.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2008年第9期6-12,共7页
Journal of Mechanical Engineering
基金
国家自然科学基金(50675078)
国家高技术研究发展计划(863计划，2006AA04Z136)
北京工业大学111人才资助项目。
关键词
工艺优化
全局优化
综合评价模型
Process optimization Global optimization Comprehensive evaluation model
作者简介
蔡力钢，男，1958年出生，博士，教授，博士研究生导师，北京市特聘教授，机械制造及自动化学科带头人，精密超精密加工国家工程研究中心（北工大）主任。主要研究方向为数字化设计与制造、先进制造装备与自动化、CAD／CAPP／CAM／PDM／ERP集成和CIMS等。发表论文60多篇，专著1本，获国家科技进步二等奖1项，省部级一等奖3项。E-mail：lgcai321@yahoo．com．cn
