基于灰数逼近理想解排序法的夹具设计方案评价  

Evaluation of Jig and Fixture Design Scheme Based on Grey Number TOPSIS

作　　者：张莉[1] 冯定忠[2] 刘鹏玉[1] 祝书伟 

机构地区：[1]台州学院,台州318000 [2]浙江工业大学,杭州310014 [3]新杰克缝纫机股份有限公司,台州318000

出　　处：《中国机械工程》2016年第20期2728-2734,共7页China Mechanical Engineering

基　　金：浙江省自然科学基金资助项目(Y14F030058)

摘　　要：夹具设计的优劣直接影响着工件的质量和精度。分析了定位基准的选择方法,构造了定位基准指标因子表达式,并建立了定位方案层次结构模型。在此基础上,建立了基于约束自由度因子、加工刚度因子和工艺成本因子等指标的夹紧方案评价模型。采用灰数逼近理想解排序法方法对定位方案进行了评价,并利用其评价结果对夹紧方案进行了评价。最后,通过实例验证了所提方法的可行性并确立了最优夹具设计方案。The ideal and non-ideal jig and fixture designs affected the quality and accuracy of workpiece.The selection method of location datum was analyzed,and the evaluation indexes of location datum were deeply studied to construct the corresponding factor expressions.The level model for locator scheme was established.Then,the evaluation model of clamping scheme was proposed,including three indexes,such as the constraint degrees of freedom,the processing stiffnesses,and the process costs.The sorting of location scheme was computed by grey TOPSIS,and the results were used to compute clamping scheme.Finally,the optimal jig and fixture design scheme was obtained by the proposed method.

关 键 词：夹具设计方案 定位 夹紧 灰数 逼近理想解排序法 评价 

分 类 号：TH164[机械工程—机械制造及自动化]