topic Re: Rack and Pinion Motion Link in Fusion Support Forum

Rack and Pinion Motion Link

kmilligan2 — Mon, 16 May 2022 04:01:43 GMT

Hello,

I've looked at several tutorials on how to create a motion link for a rack and pinion. However, I am working in imperial and all of them are using metric. I tried to calculate my gear's values using metric but, I have only gotten close to the value by enter random numbers. I am using McMaster-Carr's parts 5172T56, and 5174T1 for this motion link. Any information for getting this to work would be appreciated.

Thank you,
Kevin Milligan.

Re: Rack and Pinion Motion Link

davebYYPCU — Mon, 16 May 2022 04:10:05 GMT

Presuming you have the Revolve Joint on the Pinion, and a Slider Joint on the rack.

You need to find / know the circumference of the Pinion tooth meshing circle.

Motion Link is 360 deg for the pinion, and Circumference distance for the slider.

Might help....

Re: Rack and Pinion Motion Link

kmilligan2 — Mon, 16 May 2022 08:17:05 GMT

Yes, I have the joints setup for the pinion and slider. The Pinion tooth meshing circle would be 1.88. I used that value and it does move correctly. Though it looks like my starting position is off by a little.

Thank you.

Re: Rack and Pinion Motion Link

davebYYPCU — Mon, 16 May 2022 08:27:53 GMT

Drive Joint will adjust the meshing, when you know the value of adjustment it can be saved permanently.

Might help,,,,,