摘要
以轮胎和轮罩动态间隙为例,提出根据硬点坐标建立三维尺寸链数学模型,获取了最小间隙及位置,并对最小间隙的公差范围进行分析,同时利用实物测量和3DCS软件验证了数学模型的准确性。利用数学模型推导计算的灵敏度大小,结合整车设计尺寸和制造安装工艺对最小间隙提出优化方案,对轮胎和轮罩之间的动态间隙值进行优化设计。对于空间相对运动的结构件间的尺寸分析提供参考,同时优化的尺寸能提高整车品质,在整车设计开发及制造安装过程中具有现实意义。
Taking the dynamic space between a tire and wheel-cover for example, a mathematical model of 3D dimensional chain is built according to hard points coordinates. Upon this model, the min-distance and the location are calculated, and then the tolerance is analyzed. The mathematical model is verified accurate by actual measurement and the model of 3DCS. Sensitivity coefficient in the tolerance analysis is investigated to optimize the data of tire and wheel-cover in order to make the design accurate. This paper gives guidance to analyze the dynamic-space in a 3D model, and the result from optimization gives a way to increase the quality, lays a basis meaning for design and manufacture.
出处
《农业装备与车辆工程》
2016年第1期46-51,共6页
Agricultural Equipment & Vehicle Engineering
关键词
三维尺寸链
数学模型
轮罩
间隙
公差
3D tolerance chain
mathematical model
wheel casing
clearance
tolerance
