数字化公差控制效果预测方法及其公差数学模型的建立  

Digital Forecasting Method on Tolerance Control Effect and Establishment of Tolerance Mathematical Model

作　　者：黄强[1] 高婵君 

机构地区：[1]重庆理工大学机械工程学院,重庆400054

出　　处：《机床与液压》2014年第17期141-146,共6页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目(51075419)

摘　　要：针对机床系统的数字化精度分析及其公差设计需求,提出了一种计算机辅助公差分析与设计方法。以定义面向系统的几何要素公差语义为基础,推导了几种基本几何表面的公差数学模型,模型包括几何表面在6个自由度上的约束,并表示为齐次坐标变换矩阵的形式以方便与机床系统误差模型的兼容。最后给出了公差控制效果预测方法的示例。Aimed at the requirement of digital precision analysis and tolerance design for the machine tool system,a method of computer aided tolerance analysis and design was proposed. Based on defining the system-oriented tolerance semantics on geometry element,tolerance mathematical models of several basic geometry surfaces were inferred. The restrictions of geometry surface on 6-DOF were included in the model,and were expressed in the form of homogeneous coordinates transformation matrix,so as to be easily compatible to the error model of machine tool. The demonstrations about forecasting method of tolerance control effect are given finally.

关 键 词：公差设计 几何要素 面向系统 公差语义 数学模型 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]