摘要
指出用圆弧代替两圆柱（孔）轴线正交交线正投影的利弊，应用解析法分析了该简化画法的误差，认为其适用范围是两圆柱（孔）半径比不大于０．８２８。
It is shown that there are both advantages and disadvantages in a simplified drawing of front view with two orthogonal cylinders or bores which is using a length of circle as a substitute for the intersecting curves. Error resulted from the above drawing is analysed. And, it is found that this drawing is effective for the diameter ratio of cylinders less than O.828.
出处
《江汉石油学院学报》
CSCD
北大核心
1995年第4期80-82,共3页
Journal of Jianghan Petroleum Institute
关键词
画法几何
机械制图
作图
problems of geometricat
descriptive geometry
analytic geometry
surfaces of rerotutions
curves (graphs)
mechanical drawing
