论文部分内容阅读
目的:为使零件在设计阶段实现公差的自动分配,研究线轮廓度在计算机中的表达模型。创新点:1.提出一种新的构建线轮廓度公差T-Map图的方法;2.用运动学等效的方法表示理想轮廓公差域的允许偏差。方法:1.将零件轮廓分解成多段,然后分别为每段生成一个实体模型T-Map(图6和7);2.利用布尔交运算将所有分段T-Map合成一个完整线轮廓度的T-Map(图8);3.以弧形短槽为例,演示创建线轮廓度的方法步骤。结论:将弧形短槽轮廓分成多段,先实现每一段的T-Map,再利用布尔交实现整体线轮廓度公差的T-Map图,证明该方法在构建任意轮廓的线轮廓度公差上的有效性。
OBJECTIVE: To make the automatic distribution of tolerances during the design stage of a part, the expression model of line profile in a computer is studied. Innovative points: 1. Proposed a new method to construct line contour tolerance T-Map map; 2. Use kinematic equivalent method to represent the tolerance of the ideal contour tolerance field. Methods: 1. The part contour is decomposed into multiple segments, and then a solid model T-Map is generated for each segment separately (Figures 6 and 7); 2. All of the segment T-maps are combined into a complete line profile using Boolean intersection operation T-Map (Figure 8); 3. Take the arc short slot as an example to demonstrate the method steps of creating a line profile. CONCLUSION: The arc-shaped short groove contour is divided into several sections. The T-Map of each section is first realized, and then the T-Map of the whole line contour tolerance is realized by using Boolean intersection. It is proved that this method can be used to construct the profile contour tolerance of arbitrary contour Effectiveness.