Make a two-view drawing of a yoke cam that will raise the yoke 35 mm. The cam is an eccentric cam having a dia. of 90 mm and a plate thickness of 20 mm. Shaft = 028 mm, hub = 044 mm X 30 mm long with the extension on one side only. The yoke is 14 mm thick and has a wall width of 20 mm. A 6 mm X 30 mm steel guide bar is welded to the top and bottom of the yoke.
Make a two-view drawing of a drum cam from the following information:
• Rise 1.50 in. in 120° with parabolic motion
• Dwell for 60°
• Drop 1.50 in. in 150° with modified sine motion
• Dwell for remainder Roller follower= 0.50 in., cam= 03.00 in. X 3.50 in. long, follower groove= .40 in. deep. Use your judgment for dimensions not given. Show the full development of the cam, which will serve as a motion diagram. Prepare a chart showing the angular displacement from a timing hole located at 0°, and the displacement from the baseline for every 15°. Scale 1:1.