摘要
从更改尺寸在零件间以及零件相关尺寸间传播的角度,探讨了基于关联的尺寸更改传播路径搜索方法。建立了尺寸关联更改传播模型,用以描述尺寸特性间的逻辑与层次关系;运用矩阵运算方法,基于零件间的尺寸关联,建立了以零件为节点的关联更改传播网络,将尺寸更改传播系数作为路径评价指标对路径进行了优选;建立了表征更改零件的尺寸参数与被影响零件之间关联的集值矩阵、中间转换矩阵及向量值矩阵;采用内积运算方法,建立了更改尺寸与被影响零件尺寸参数间的关联映射关系,确定了更改尺寸在产品中的传递过程与路径;最后,以尺寸更改在印纸覆膜机中的传播过程为例验证了本方法的有效性。
From the view point of dimension change propagation among parts and parts related dimensions,a searching method of dimension change propagation paths was discussed based on correlation.The dimension correlation model for change propagation was established to describe the hierarchical and logical relationship between dimension characteristics.By using matrix operation method,the correlation change propagation network with parts as nodes was established based on dimension correlation.The dimension change propagation coefficient was used as the evaluation index to optimize the paths.The set value matrix,intermediate transformation matrix and vector value matrix were established for representing the correlation between the dimension parameters of the changed parts and the affected parts.By using the inner product operation,the correlation mapping relationship between the changed dimensions and the dimension parameters of the affected parts was established,and the propagating processes and paths of changed dimension in products were determined.Finally,an example for size change in propagation processes of paper printing and laminating machine was given to verify the effectiveness of the proposed method.
作者
杨波
尚俊芝
马宁
高常青
YANG Bo;SHANG Junzhi;MA Ning;GAO Changqing(School of Mechanical Engineering,University of Jinan,Jinan,250022)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2021年第13期1530-1538,共9页
China Mechanical Engineering
基金
国家自然科学基金(51775239,50975124)。
关键词
尺寸关联
更改传播路径
尺寸逻辑元
更改传播系数
dimension correlation
change propagation path
dimension logic unit
change propagation coefficient