摘要
建立了圆柱面正交时相贯线正等测投影的数学模型,并对投影中相贯线的可见性进行了分析,导出了可见相贯线端点坐标的计算公式,同时还给出了用计算机绘制相贯线投影的框图.
The authors set up the mathematical model of the intersection line on the two perpendicular cylinder surfaces, analysed the visibility of the intersection line in projection and developed the calculating formula of the end point of visible intersection line. In the meanwhile, they presented the program block diagram for computer drafting.
关键词
圆柱面
相贯线
正等测投影
数学模型
cylinder surtace
intersection line
orthographic axonometric projection
mathematical model
computer aided drafting
