Cam Design - Do Both Projects

TEAM SEMESTER PROJECTS ON

CAM DESIGN - DO BOTH PROJECTS

Click to see the desired cam profile

A. Cam Design 1 - Due Date: April 29, 2015 - 4:00pm

Specifically, do the following:

Submit one paper report per team--Paper report should include details of the design and a disk with excel or other files to support your results; The report should have three basic sections:

A. Say what you will say - introduction and problem description

B. Say it - main body of the report - plots - description - comparisons of results from WM and theoretical results from Excel or Matlab-pressure angle review, etc.

C. Summarize what you said -CONCLUSIONS

1.Plot rise and return as a function of cam rotation angle

2.For an inline-roller follower system, determine the path (x, y) for a cutter that has the same radius as the roller

3.Plot x,y as a function of cam rotation angle – This is not the cam surface but the path of the roller

4.Determine pressure angle (consult the text) and plot it as a function of cam rotation angle

5.Is the pressure angle acceptable?

6.If pressure angle is not acceptable, change your design to improve it (consult the text)

7. Transfer cam coordinates to WM and model the cam system but include a spring to maintain contact at all times.

8. Plot position, velocity, acceleration to insure smooth operation in WM

9. Check pressure angle in WM

10. The cam should weigh 0.75lbs and the follower should weigh 0.4 lbs. Determine forces in WM at the joints assuming that the cam is driven at 500RPM

B. Cam Design 2 - Due Date: April 29, 2015 - 4:00pm

Design a cam with a flat-faced follower using the same data as in Cam Design 1.

Submit one report per team--Paper report should include details of the design and a disk with excel or other files to support your results;The report should

1.Do you have cusps in the profile? If yes, use a base circle large enough to avoid cusps

2.If no cusps are present, run your program with smaller base radius until you find where cusps start (consult the text)

3. Transfer cam coordinates to WM and model the cam system but include a spring to maintain contact at all times.

4. Plot position, velocity, acceleration to insure smooth operation in WM

6. The cam should weigh 0.75lbs and the follower should weigh 0.4 lbs. Determine forces in WM at the joints assuming that the cam is driven at 500RPM