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Barrel Cam Design

Pioneer
Pioneer

Hello Experts Smiley Happy

 

Any idea how this barrel cam was drawn?

 

I need to draw pretty much this exact thing but struggling figure out how he drew it Smiley Sad

 

https://www.youtube.com/watch?v=i4Qtay7CJzs

 

Cheers

 

Rossco

 

 

19 REPLIES 19

Re: Barrel Cam Design

Gears Phenom Gears Phenom
Gears Phenom

In the Ordered environment:

Draw the 2D path of the cam in a sketch.

Project the sketch onto the cylindrical surface (wrap sketch).

 

Use the normal cutout command.

OR

Swept Cut.

OR

3D Sweep (Solid Sweep).


____________________________________
--Scott Wertel, P.E.

Re: Barrel Cam Design

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

Hi @swertel

 

 

 

as far as I can remember, the Solid Sweep will not exapt any wrapped or projected cure for use as drive curve.

The last time only helicalmcurves were possible.

 

 But it would be a great, a really great enhancement if any wrapped or projected curve also were usable for Solid Sweep

 

regards
Wolfgang

Re: Barrel Cam Design

Pioneer
Pioneer

Hey Scott,

 

Thanks for the quick reply. So I did as you said and got the curve I wanted. But I am struggling with making the swept cut. Should I choose Multiple paths? Which options do you think I should choose?

 

Please see attached file.

 

Barrel Cam.JPG

Re: Barrel Cam Design

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

Hi @Rossco

 

 

 

could it be that You have uploaded a different version of Your file?

There is no wrapped curve only a projected one, and that one of course will not create any proper result.

 

 

regards
Wolfgang

Re: Barrel Cam Design

Pioneer
Pioneer

Hi Wolfgang,

 

I chose the wrap sketch option. Is there any other option to choose from?

 

Screenshot 2018-08-22 21.06.02.png

Re: Barrel Cam Design

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

Hi @Rossco

 

 

 

no. this is OK, but the uploaded file seems to be the first try with a project curve and different sketches.

 

 

regards
Wolfgang

Re: Barrel Cam Design

Pioneer
Pioneer

Hi Wolfgang,

 

My apologies, the file I uploaded was of my first attempt. Since then I have been able to get the cutout but it's not at all uniform. Would you or Anyone be able to suggest why? Please see the attached file.

 

Rossco

Re: Barrel Cam Design

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

Hi Rossco,

I attached your part with my attempt of "cam" feature.

In my opinion my "cam" feature is not very nice and probably not exactly correct as it should be from Solid Sweep. To cerate this feature requires aditinal surfaces and curves (Trajectory feature group in part tree). 

I found inspiration in one of @Imics videos on Youtube (link).

 

SE can not create Solid Sweep Cut as it should. As Wolfgang (@hawcad) mentioned, for Solid Sweep only sketch geometry a helical curve can be used. Nothing else.

But at least it is something... I am sure others will come up with better solutions :-)

 

Ota

Re: Barrel Cam Design

Siemens Legend Siemens Legend
Siemens Legend

Attached is an V219 ASM that has what I think you need for this.

These are tough to make and I don't really like the method I have for this but it works.

This method uses wrap sketch. Key thing is you have to do the curves on the outer and inter
diameter and work from there.

 

https://www.youtube.com/watch?v=TGYpO3ZgFiA

 

In the previous example a different method to generate the curves is used because the follower is rotating
and does not always intersect the cam centerline.

 

Hope this helps.

 

Thanks,

 

Art