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  #11  
Old 03-25-2013, 04:27 AM
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Michael Mezalick Michael Mezalick is offline
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That, my boy, is the $64,000.00 question.
You can draw it out in another program, such as Modo, Rhino, Sketchup, or other CAD programs and import it into Aspire, or you can try to use the same approach as I have done in the example I posted.
Michael


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Originally Posted by jaysengines View Post
sounds fair how do i draw the cam then lay it flat for wrapping and linking them from cam to cam or cams to cam bearing ? i have made my own conecting rods and parts in cut 2d and then i just flip them to get the part out ....jay
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  #12  
Old 03-25-2013, 09:37 AM
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Mick Martin Mick Martin is offline
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Take a look at these videos http://www.vectric.com/support/train...al/aspire.html, if you have not used Aspire start at the beginning and practice, practice and more practice ......... the videos you are looking for are number #13 and #14 ....... but learn the basics first.
You know the old saying .... practice makes perfect
Mike Mezalick must have spend hundreds if not thousand of hours to get to his level.
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  #13  
Old 03-25-2013, 09:45 AM
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Michael Mezalick Michael Mezalick is offline
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Thanks Mick,
It's how I got my " Artic Blond " hair..
Michael

PS You're up early ???
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  #14  
Old 03-26-2013, 09:53 PM
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ok so i will take a look at the videos and ill be back oh yes you tube my name jaysengines and tell me what you think .......jay
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  #15  
Old 03-26-2013, 10:41 PM
richf richf is offline
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I'm no Michael but I gave this a quick try with a less realistic camshaft. The first picture shows the model. The 2nd picture shows the model with the roughing toolpath from the BobCad simulation mode. If someone has the model and you have a 4th axis postprocessor available for you software/machine combo, you could just outsource the G-code creation.

I don't have any experience in this area but I'm thinking camshafts may take some serious bits and maybe a sophisticated finishing process to make sure it is absolutely smooth. I don't think sandpaper will cut it. I'm sure you can do a search and find out more about the manufacturing processes.
Attached Images
File Type: jpg camshaft-crude.jpg (9.5 KB, 24 views)
File Type: jpg camshaft-rotary-toolpaths.jpg (11.8 KB, 24 views)
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  #16  
Old 03-27-2013, 07:04 AM
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Michael Mezalick Michael Mezalick is offline
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I completely agree with things posted here.
Not only is the designing a very difficulty area to work in when designing something as exacting as a cam shaft but the fabrication of this type of item is a completely different animal.
There are far more accurate programs that should be used for the design portion.
And as mention, the fabrication must be exact in order for it to all work.
My father was a locomotive mechanic in a steel plant and as a young boy I got to see full scale engines larger than the family car.
All built to exact specs.
If this is an area that you are truly interested in pursuing, I would strongly recommend that you consider other programs more suited to that level of 3-D detail.
Michael
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  #17  
Old 03-27-2013, 10:02 AM
rcrawford rcrawford is offline
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I would think Rhino/RhinoCAM (or MadCAM) would be better software for this, on a milling machine with a 4th axis.
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  #18  
Old 03-27-2013, 10:58 AM
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Joey Jarrard Joey Jarrard is offline
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I agree with the guys. There is a better way to do this. And I have to say it is over my head.
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