【作者】 李向前； 黄美发； 匡兵； 鲍家定； 王乔义；

【Author】 Li Xiang qian Huang Meifa Kuang Bing Bao Jiading Wang Qiaoyi School of Mechanical & Electrical Engineering, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, China

【机构】 桂林电子科技大学机电工程学院；

【摘要】 规范表面模型是新一代产品几何技术规范实现产品对偶性认证的前提。为了解决平面要素规范表面模型生成的问题,本文提出一种规范表面模型的生成方法。首先依据零件功能要求建立平面要素的公差数学模型,然后考虑加工工艺对表面模型的影响,在公差带内按照正态分布生成模拟实际零件表面的模拟点,通过对模拟点进行最小二乘B样条拟合生成规范表面模型。最后用实际零件为例说明规范表面模型的生成方法。更多还原

【Abstract】 The specification surface model is the presupposition for achieving the duality verification in the new-generation geometrical product specification. To solve the problem for generating the specification surface model of planar factors, this paper presents a method to generate the specification surface model. The tolerance mathematic model of the planar factors should be firstly established. Then the requirements of the parts functions and the processing technology’s influences on the specification surface model need to be considered. The simulation points under the normal distribution are generated in the tolerance zone. By using the fitting approach of the least-squares B spline, the specification surface model is generated. An example is applied to illustrate the method for generating the specification surface model.更多还原