Technical Drawing - Exam Papers - Ordinary - 2007 - Engineering
(a) A radial plate cam has a minimum radius of 42mm and a camshaft diameter of 20mm.
0° to 30° Dwell;
Draw the profile of the cam.
(b) Fig. 3 shows a link mechanism. Crank OA rotates in an anti-clockwise direction about
(i) Using a line diagram to represent the mechanism, plot the locus of point P for one
(ii) Draw the profile of a simple machine guard about the mechanism with a minimum