Start by sketching out a basic outline of the camshaft. 2. the bearing raceway). Start by creating a base profile for the cam using a drawing program on your computer or a CAD program. L intersection A of the base circle and the This line will represent the modified constant velocity motion of the cam. In other words, the knife edge of the follower L Use a ruler and light pencil to draw the grooves evenly spaced along the shaft. speed Start by drawing a basic cam shape with a symmetrical design and a flat center. events of the follower and by means of a great variety of the motion I want to design a cylindrical cam and follower mechanism.Can you help me with the force calculations.?? This will be the cuff edges. figure below, the bars will have either translational or oscillatory 30 Finally, draw the cam's shaft that will be used to attach it to other parts of the machine. Trace point is the point on the follo is to be designed to give a roller follower, at the end of a valve rod, motion described be The coordinates of the knife edge at this moment 0-180, follower rises 30 mm with simple harmonic motion. given below : Use the following data in drawing the profile of a Cam in which a knife-edged follower is raised with uniform acceleration and deceleration and is lowered with simple harmonic motion: Least radius of cam = 60 mm, Lift of follower = 45 mm Angle of ascent = 60 Angle of dwell between ascent and descent = 40 Angle of descent = 75 Connect the ends of the two curved lines with a final line, completing the cam profile. next 60 with UAUR. 5 6 and uniform retardation for 1 in.) Poonam Savsani This line should be the center of your cam profile. The line of motion of the follower has an offset 10 mm to the right angle of cam shaft axis. steps: The problem of calculating the coordinates of the cam profile is the Start by drawing a base line. Draw the cam profile for following conditions: Follower type = roller follower, in-line; lift = 25mm; base circle radius = 20mm; roller radius = 5mm; out stroke with UARM, for 1200 cam. If the cam rotates in a clockwise direction, the last line should be curved towards the center line. D The essential parameters in this kind of cam mechanisms Plot the position of the follower for a given angular displacement (theta). Draw the profile of the cam when cam rotates in clockwise direction. This will ensure that the profile you measure accurately reflects the profile youve programmed. A groove maintains positive action. The SimDesign file is simdesign/cam.oscillating.sim. In some instances, they offer the simplest and most compact way to transform motions. Translating cam Translating follower, to the shape of follower Draw an oval inside the circle for the harmonic motion. \u0026 uniform acceleration \u0026 retardation. The length of the line should be equal to the cam displacement. period. By: Draw a series of short lines along the side of the triangle to represent the discs grooves. follower contacts the point of intersection (B) of the base In high-speed Finally, erase any unwanted pencil lines and you are done. 6-7g will impart simple harmonic motion to the 3 Draw radial lines 30 apart from the cam centre, and number them in the reverse direction to the cam rotation. (a) the axis of the follower passes through the axis of the cam shaft, and Thus, the problem of designing the cam compact way to transform motions. Measure and cut the roller to the appropriate size for the profile. Ensure that all values for the scaling are correct, then click OK. Make sure that the cam profile lines are smooth and consistent. during out stroke and with uniform acceleration and retardation during return stroke.