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snellutla1-Visitor
1-Visitor
October 20, 2010
Question

Barrel Cam Mechanism

  • October 20, 2010
  • 3 replies
  • 2974 views
Hi,

I am working on Barrel Cam mechanism where I want cam follower to follow the cut
I created on a cylinder surface.To create cut in the cylinder, I used curve and
created a surface feature along that curve and wrapped it and solidified
it. Also I created another “xyz” component using the same curve for the follower
to slide over it.As barrel cam rotates the above created “xyz” part moves
horizontally and the follower which was connected to “xyz” with a CAM connection
moves along with it.
The above procedure worked for me but is tedious.

Do you guys have any other solution where the flower follows the path of the
barrel cam cut without creating a new part.


Please find the attached file for more description.

Thanks in advance,
Sharath




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3 replies

P
peter.stockhaus1-Visitor
1-Visitor
October 20, 2010

What I would do would be the following:

1. Create a curve that the point the center of the cutter at its deepest follows as your part rotates.

2. Create a second curve that a point on the cutter some distace outside the part follows as the part rotates.

3. Create a boundary surface between the curves.

4. Create two surfaces offset to either side by half of the diameter.

5. Create boundary surfaces between the two offset surfaces.

6. Merge them all together and solidify with material removed to create your cut.

7. Add corner radii if needed.

Hope this helps;

Peter Stockhausen
Infotech Aerospace Services

S
snellutla1-VisitorAuthor
1-Visitor
October 21, 2010
Hi Peter,

Thanks for the response. You answered one of questions but I am mainly looking for how to mechanize or make the follower to follow the shape of the cut I made in the cylindrical barrel.
I followed instructions given in the article “Creating a Cylindrical Cam Using Mechanism Design Extension by Dana Coombs, SYNTHES CMF” to make mechanize the cam.

Is there any other method to create the same mechanism.

Thanks,
Sharath






In Reply to Peter Stockhausen:

What I would do would be the following:

1. Create a curve that the point the center of the cutter at its deepest follows as your part rotates.

2. Create a second curve that a point on the cutter some distace outside the part follows as the part rotates.

3. Create a boundary surface between the curves.

4. Create two surfaces offset to either side by half of the diameter.

5. Create boundary surfaces between the two offset surfaces.

6. Merge them all together and solidify with material removed to create your cut.

7. Add corner radii if needed.

Hope this helps;

Peter Stockhausen
Infotech Aerospace Services

M
mjenkins10-Marble
10-Marble
October 21, 2010

I created a datum curve on the barrel part and then put points on the pieces that follow it. I then assembled the points onto the datum curve in the mechanism.


In Reply to Sharath Nellutla:

Hi,

I am working on Barrel Cam mechanism where I want cam follower to follow the cut
I created on a cylinder surface.To create cut in the cylinder, I used curve and
created a surface feature along that curve and wrapped it and solidified
it. Also I created another “xyz” component using the same curve for the follower
to slide over it.As barrel cam rotates the above created “xyz” part moves
horizontally and the follower which was connected to “xyz” with a CAM connection
moves along with it.
The above procedure worked for me but is tedious.

Do you guys have any other solution where the flower follows the path of the
barrel cam cut without creating a new part.


Please find the attached file for more description.

Thanks in advance,
Sharath





Michael R. Jenkins P.E.
Design Engineer
Direct: 816-801-2332
Fax: 816-891-9432

Commercial Vehicle Systems
Haldex Brake Products Corporation
10930 North Pomona Avenue
Kansas City, MO 64153-1215
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