摘要
为提高工艺规划的柔性、可扩展性、可重用性及动态适应性,从而符合可重组制造系统的特点和需求,研究了工艺规划方法的实现机理,提出面向多工序加工系统的可重构工艺规划方法。根据任务性质异同和分级规划原理,建立了面向多工序加工系统的分层可重构工艺规划体系架构。简化层上,从工序和工步两个层次探讨相似实例工艺的简化方法;重构层上,在构建惩罚、切削时间矩阵以及换刀、定位、装夹、工作台旋转等时间向量的基础上,以非加工时间和相对时间偏差为目标,建立可重构工艺规划的数学模型,利用多目标智能优化算法进行求解;修正层上,对以上工艺进行调整和修改,以使其更符合实际需求。通过实例验证了所提方法的实用性与有效性。
To improve flexibility,scalability,reusability and dynamic adaptability of process planning,consistent with the characteristics and demand of reconfigurable manufacturing system,reconfigurable process planning oriented to multi-stage machining systems was presented and working mechanism of process planning was studied.According to the similarities and differences among tasks and the hierarchical planning principle,hierarchical architecture for reconfigurable process planning in the multi-stage machining systems was proposed.On simplification layer,the simplification method of similar process case was discussed from perspectives of sequence and step;on reconfiguration layer,taking non-cutting time and relative deviation as the objective functions,the mathematical model of reconfigurable process planning was established by constructing penalty time matrix,cutting time matrix and tool changing time vector,positioning time vector,clamping time vector and table index time vector,and was solved by multi-objective intelligent optimization algorithm;on the modification layer,the above process planning was adjusted and modified to adapt to practical needs.An example was used to reveal the feasibility and effectiveness of this method.
出处
《计算机集成制造系统》
EI
CSCD
北大核心
2011年第6期1215-1223,共9页
Computer Integrated Manufacturing Systems
基金
国家自然科学基金资助项目(50975209
51005169)
上海市自然科学基金资助项目(10ZR1432300)
上海市基础研究重点资助项目(09JC1414500)~~
关键词
计算机辅助工艺规划
多工序加工系统
可重构工艺规划
数学模型
汽车发动机
computer aided process planning
multi-stage machining systems
reconfigurable process planning
mathematical model
automobile engine
