Radial Cam

[Anonymous]

I have seen a few topics for cam design with Inventor but I don't think any of them apply to what I would like to do. Basically what I need is a round disk with the cam profile cut in the top flat surface. The path would run concentric with the O.D of the circle and the lobes would run vertically. I hope this makes sense. What would the best approach be?

Dave

[Anonymous]

I would try making a cup shaped piece and then
subtract the profile using emboss and wrap to face.  I believe that emboss
will make the transitions on your profile a radial line, which hopefully is what
you want.

-Mike

[Anonymous]

I was able to get emboss to work.  I posted an
example in CF.

-Mike

[Anonymous]

Oh, now that is sweet.  I had to do a part
very much like that a few weeks ago.  It gave me fits, and I never did
get the transitions quite right, but that emboss cut is just
perfect.  I have time to re-do my part.  Thanks.

Walt

style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">

"mpower" <
href="mailto:michael.powers@ridesti.com">michael.powers@ridesti.com>
wrote in message
href="news:D916A576D2A639B10F7862944FB929A3@in.WebX.maYIadrTaRb">news:D916A576D2A639B10F7862944FB......

I was able to get emboss to work.  I posted
an example in CF.

-Mike

[Anonymous]

Mike I took the liberty of Zipping your file and reposted it, unzipped files
can cause problems with some windows internet applications.

--
Laurence,

Power is nothing without Control
---


"mpower" wrote in message
news:D916A576D2A639B10F7862944FB929A3@in.WebX.maYIadrTaRb...
> I was able to get emboss to work. I posted an example in CF.
>
> -Mike

[Anonymous]

Laurance.

Next time you might want to also take out the original file before
reposting

I have moved yours to a new thread, deleted the original and cleaned out
all the garbage text from yours. Hopefully everything is still
intact. 8^)

--
Kent Keller
http://www.MyMcad.com/KWiK/Mcad.htm

Assistant Moderator
Autodesk Discussion Forum Moderator Program

"Laurence Yeandle"
wrote in message
news:58D508B38AC50276D8378820D5AE8CAC@in.WebX.maYIadrTaRb...
> Mike I took the liberty of Zipping your file and reposted it, unzipped
files
> can cause problems with some windows internet applications.

[Anonymous]

Ah......yeh............garbage text silly me..........ok Kent.

--
Laurence,

Power is nothing without Control
---


"Kent Keller" wrote in message
news:0E1398BA1108B7DA2B87DA671F6F054D@in.WebX.maYIadrTaRb...
> Laurance.
>
> Next time you might want to also take out the original file before
> reposting
>
> I have moved yours to a new thread, deleted the original and cleaned out
> all the garbage text from yours. Hopefully everything is still
> intact. 8^)

[Anonymous]

Mike, thanks for the idea, this opens up a hole new can of worms. See attached for a cylindrical cam that actually displays "curvy" lines in idw. See IVCF under radial cam thread. J.D.

[Anonymous]

This is a can of worms, I agree. In my opinion, emboss is no way for cams,
because the lofted surfaces are getting narrower to the center of the cam
cylinder. So you can'z move a pin or roller in theses grooves.

I've put a JPG in IVCF. The view is straight at a pin within JD's groove.
Outside of the red marks is interference

Greetings
Walter

"JDMATHER" schrieb im Newsbeitrag
news:f18fed8.6@WebX.maYIadrTaRb...
Mike, thanks for the idea, this opens up a hole new can of worms. See
attached for a cylindrical cam that actually displays "curvy" lines in idw.
See IVCF under radial cam thread. J.D.

[Anonymous]

Dang, I thought I had found an easy way. I wish there was a way to drive one part (end mill cylinder) around another part resulting in the intersection being removed. It is problems like this that leave me questioning lots of other geometry.

[xavierl]

the easy way would of course have been to have a 3d spline showing the cam profile on the o.d. of the cylinder and then do a cut/sweep to get the cam profile.(come on autodesk we are waiting...)
the emboss wrap does not seem to be accurate. on jdmather example the slot cross section needs to be normal to the curve profile to make the peg fit.
regards
frans x liebenberg

[Anonymous]

>the easy way would of course have been to have a 3d spline showing the cam profile on the o.d. of the cylinder and then do a cut/sweep<>
Frans,

I've tried 3d spline without accurate results because you are sweeping a rectangle instead of a cylinder (end mill). Do you have an example that works? The only method that I have found that works is a bunch of surface splits, and boy is that painful. And in the end the idw wouldn't display properly. J.D.

[xavierl]

no. I cant figure out how to get a coil spring shaped spline by intersecting surfaces.( that is if I understand iv correctly. you can only get a 3d spline by intersecting surfaces)
frans x liebenberg

[Anonymous]

Thanks, I didn't know that it could cause a problem.

-Mike
"Laurence Yeandle" wrote
in message news:58D508B38AC50276D8378820D5AE8CAC@in.WebX.maYIadrTaRb...
> Mike I took the liberty of Zipping your file and reposted it, unzipped
files
> can cause problems with some windows internet applications.
>
> --
> Laurence,
>
> Power is nothing without Control

[Anonymous]

>I've tried 3d spline without accurate results
because you are sweeping a >rectangle instead of a cylinder (end mill).

I understand what you are describing.  Have
you looked at the part that was done for the September IV World Cup
Challenge?  It had a helical slot that would have been made with an
endmill.  Perhaps that could give you an idea on how to accomplish the 3D
slot.  There were several different methods for doing this, but my method
didn't use the coil command, so maybe it would work.  I'll post it in CF
(zipped this time).

-Mike

[Anonymous]

See my post in CF (Cylindercam), This was a quick sample a more precise cut could be made if some calcs where used. Is this what you are looking for or not ?? Sheetmetal rolled and welded with extrude. Kinda a goofy approach but it seems close.

[Anonymous]

Hi all, please excuse my ignorance, what is CF? IVCF?

[JDMather]

CF=Customer Files http://discussion.autodesk.com/forum.jspa?forumID=126
IVCF=Inventor Customer Files http://discussion.autodesk.com/adskcsp/forum.jspa?forumID=121

At one time you could not attach a file directly to a thread.

This thread is really old back when I was searching for a method. Follow the information that I posted in your original thread for the method that I have found most closely represents the true geometry.
http://discussion.autodesk.com/thread.jspa?messageID=5674460關