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Manual animation of ratchet and pawl mechanisms in Assembly files
Manual animation of ratchet and pawl mechanisms in Assembly files
I have experienced a problem when manually animating a model ratchet and pawl mechanism in an assembly file. One can get the pawl to track the ratchet wheel surface OK but there seems to be nothing to stop the ratchet wheel going in both directions, contrary to real life experience. I have used transitional constraints to link pawl surfaces with ratchet wheel surfaces but there seems to be no drive constraint which will operate in this circumstance. Any ideas on how to solve the problem?
Can't you apply an Angle Constraint that will drive the ratchet/pawl
mechanism?
"alistairb" wrote in message
news:30868983.1082978471386.JavaMail.jive@jiveforum1.autodesk.com...
> I have experienced a problem when manually animating a model ratchet and
pawl mechanism in an assembly file. One can get the pawl to track the
ratchet wheel surface OK but there seems to be nothing to stop the ratchet
wheel going in both directions, contrary to real life experience. I have
used transitional constraints to link pawl surfaces with ratchet wheel
surfaces but there seems to be no drive constraint which will operate in
this circumstance. Any ideas on how to solve the problem?
R8 has a tool known as a contact solver that would allow you to do this. R7
does not have any real-world physics so with some very complicated formulas
it will not be possible.
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Sean Dotson, PE
Autodesk Inventor Certified Expert
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"alistairb" wrote in message
news:30868983.1082978471386.JavaMail.jive@jiveforum1.autodesk.com...
> I have experienced a problem when manually animating a model ratchet and
pawl mechanism in an assembly file. One can get the pawl to track the
ratchet wheel surface OK but there seems to be nothing to stop the ratchet
wheel going in both directions, contrary to real life experience. I have
used transitional constraints to link pawl surfaces with ratchet wheel
surfaces but there seems to be no drive constraint which will operate in
this circumstance. Any ideas on how to solve the problem?
You have replied to a verrrrrrrrrrrrrrrrry old thread here.
Just in the past week someone attached a working ratchet and pawl assembly (works in Dynamic Simulation environment).
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