机械零件图微机辅助设计的一个通用方法

A general method for the design of mechanical part drawings based on a microcomputer

本文提出了一个微机辅助设计机械零件图的通用方法。它的显著特点是,通过几何信息与拓扑信息的分流,可用微机来模拟人工绘图过程。在几何信息产生图形的框架以后,拓扑信息提出了最终图形所需要的全部信息,包括几何信息的地址,线段类型和连线方式。用这种方法,一方面,存贮量大大减少,另一方面,读取速度大大提高,尤其是方便修改与检索。经过试验与应用证明,这个方法不仅能够产生包括直线、圆弧、剖机、局部剖视、断裂等复杂的机械零件图,而且具有简单、方便高效和实用的特点。

In this paper, We present a general method for the design of mechanical part drawings based on a microcomputer. Its distinguishingfeatrue is that by means of separating the geometrical information from the topological information, we use microcomputers to simulate the process of man's drafting. After the geometrical information generated the frame of graphics, the topological information provid with all the information which the final graphics need, it includes the address of the geometrical information, the line types, and the means of linkinglines, and so on. In this way, on the one hand, the memory is greatly saved, on the other hand, the speed of reading and saying data is increased. Espe- cially, it is convenient to modify and check. Using this method, the complicated mechanical part drawings, which contain straingt lines, circular arcs, section, partail section, and break drawing, can be generated. By tests and applications, it has beenproved that this method is simple, convenient, and practical.