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Setting up links/joints for a pneumatic actuator (with .max file/pics)
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  • reidbaker
  • Posted: 25 February 2009 12:48 AM
  • Total Posts: 48
  • Joined: 14 May 2008 09:39 PM

I am trying desperately to set up the links for this pneumatic actuator. Essentially the red pieces are end points of the system and while they are meant to rotate, it’s not so important for the animation (since you can’t tell), but I need the links to remain facing properly (about the green pin) while the ‘look at’ constraint or something keeps the 2 shafts facing as they should.

The goal is to set this so that should I move either red piece, the rest of the system will move as it should normally (the pivots working and such) and as the pieces get pulled apart, the shafts will pull away from eachother (I don’t care about limits for this part though).

I need to control 6 of these by the movements of a single platform which is why I need them to work as a system instead of keyframing everything. But I’m new to this and REALLY need the help.

All pics/max files(zipped) are attached but can also be found online:

reidbaker.com/MaxHelp/ACTUATOR.max

Please see the pics here for the parts involved:
3307393431_d7cd4238f6.jpg
3308223712_2cb0c73533.jpg
3308223724_e2de8e05cb.jpg
3308223762_8c2238ef72.jpg

I can’t express how desperate I am. I will be so grateful for any help with this.



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  • Samab
  • Posted: 25 February 2009 06:21 AM

Is it anything like this hydraulic piston setup?
http://area.autodesk.com/for...near-reactor-constraints/
It may give you some ideas.



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  • reidbaker
  • Posted: 25 February 2009 07:46 AM

Samab 25 February 2009 09:21 AM

Is it anything like this hydraulic piston setup?
http://area.autodesk.com/for...near-reactor-constraints/
It may give you some ideas.

The easy stuff I can do, it’s connecting the piston to the links which have their own constraints that’s making my life a living hell. I can’t get it all to work.



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