A Simplified Representation of the Intersecting Lines of the Common Rotary Bodies Intersected in Symmetric Vertical Intersection Position in Mechanical Drawings

摘要

In mechanical drawings, the intersecting lines of the common rotary bodies intersected in symmetric vertical intersection position are often encountered. In engineering practices, the two dimensional mechanical drawings need to be drawn directly in many cases and the drawing of the intersecting lines is frequently a difficult point. The intersecting forms of rotary bodies intersected in symmetric vertical intersection position are categorized in this paper. Through formula deducing and the subsequent summary, the drawing method for determining the height of the extreme point on the intersecting lines is obtained. Accordingly, a simplified representation of the intersecting lines of these kinds of parts is presented. Finally, some instances prove that this simplified representation is practical and simple, and the circular arcs drawn by this method have a high similarity to the intersecting lines.