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puzzled1-Visitor
1-Visitor
July 10, 2013
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Determining area/volume in mechanism

  • July 10, 2013
  • 2 replies
  • 5394 views

i have a crank slider mechanism

crank slides up and down.....now is it possible to know how much area the whole mechanism covers>>????

 

is it possible by motion envelope????if yes then how?


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Best answer by DanMcCaherty

Yes. Set up a servo motor in Mechanisms for your assembly that creates the motion you want to study, then set up the kinematic analysis to simulate one cycle, and run it. Then you can get back into Standard application to do a motion analysis, and have the analysis save the volume occupied by of all parts or any selected sub-set of parts as a motion envelope/cloud. You can tweak the precision level so that you get a very coarse cloud or a much more precise cloud. Run it with the low level precision first to make sure its doing what you want because the higher you set that precisions level, the slower it runs. That volume can be saved as a feature. Back in Mechanisms mode, you can also Insert a Trace Curve using that same kinematic analysis. This allows you to track the motion of a single point throughout that motion. This is helpful if you want to compare the results of a baseline against a proposed design change in the mechanism.

2 replies

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DanMcCaherty1-VisitorAnswer
1-Visitor
July 10, 2013

Yes. Set up a servo motor in Mechanisms for your assembly that creates the motion you want to study, then set up the kinematic analysis to simulate one cycle, and run it. Then you can get back into Standard application to do a motion analysis, and have the analysis save the volume occupied by of all parts or any selected sub-set of parts as a motion envelope/cloud. You can tweak the precision level so that you get a very coarse cloud or a much more precise cloud. Run it with the low level precision first to make sure its doing what you want because the higher you set that precisions level, the slower it runs. That volume can be saved as a feature. Back in Mechanisms mode, you can also Insert a Trace Curve using that same kinematic analysis. This allows you to track the motion of a single point throughout that motion. This is helpful if you want to compare the results of a baseline against a proposed design change in the mechanism.

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    puzzled1-VisitorAuthor
    1-Visitor
    July 11, 2013

    thanks for your reply sir.....but i am stuck after running mechanism.....when i ran motion analysis from standard application it shows the path travelled and after that what step should be taken i dont know....so please can you provide the step???it would be great help....

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    puzzled1-VisitorAuthor
    1-Visitor
    July 11, 2013

    ok here is what i did....plese comment if i am wrong...

    motion analysis--->created envelope-->motion over then added a feature--->selected the envelope and then in same tab selected "volume" of quilt....is it right?

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    DanMcCaherty1-Visitor
    1-Visitor
    July 11, 2013

    I don't see the "volume of quilt" tab that you described. I just run the motion analysis, create the feature, then pick Analysis>Measure>Volume>Quilt and select the envelope that I just created. I'm running Wildfire 5 here.

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    puzzled1-VisitorAuthor
    1-Visitor
    July 11, 2013

    yes means selected envelope........but when i checked it out...the volume came out lesser than area 😮 ??????how is it possible!!!!!!!!

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