连杆曲线三重产生法及其CAD

Three Ford Production of the Coupler Curve and It,s CAD

阐明 Ｒｏｂｅｒｔｓ 及 Ｃａｙｌｅｙ 定理在连杆曲线三重产生法中的原理及其应用，提醒应用时并不因其简易而忽略差错的可能性；建议将此两定理做成统一的软件，利用电脑作图。

In the paper described Roberts & Cayley Theorem,its principle and Application.It is easy to get euor when use them,despite of such Theorem much clearly snd simply,espacialy in nonhabiual positions.popose solving problem using ComputerDrawing with a software,which based on abvoe descvibed both Theorems Cheorems complied it can be ensuring Correot.