topic Re: Cam-follower constraint on 2d sketch in Inventor Forum

Cam-follower constraint on 2d sketch

pauinch85 — Tue, 11 Apr 2023 14:08:42 GMT

Hello, I attach an easy sketch. I pretend draw a CAM Follower on 2D Sketch like in Solidworks:

https://www.youtube.com/watch?v=DD8WeDyfOsA

but in Inventor I don't see any command like "make a path" like in SW.

I need tangent the cam-follower on the entire path of the cam.

Can you help me??

Thanks,

Re: Cam-follower constraint on 2d sketch

kacper.suchomski — Tue, 11 Apr 2023 15:18:03 GMT

The assembly environment has the right tools for this. I think it's better to use blocks and layouts and use translation constraints there and all the rest to align the objects with each other.

Re: Cam-follower constraint on 2d sketch

pauinch85 — Tue, 11 Apr 2023 16:12:38 GMT

You refers on 2D sketch enviroment inside of assembly enviroment? Or create a 3d part of cam and follower and insert translation constraints?

Re: Cam-follower constraint on 2d sketch

kacper.suchomski — Tue, 11 Apr 2023 16:27:34 GMT

Place individual components as sketches, surface parts, or solid parts. This is arbitrary, because the assembly environment supports components in any form, but it gives more possibilities to establish mutual relations and constraints.

Re: Cam-follower constraint on 2d sketch

JDMather — Tue, 11 Apr 2023 18:01:20 GMT

@pauinch85

First - your follower is very poorly designed.

Second - you have a tangent between one arc and one line - but you cam is actually two arcs and two lines.

Back in a moment with corrected solution...

Re: Cam-follower constraint on 2d sketch

JDMather — Tue, 11 Apr 2023 18:28:39 GMT

Open the Attached assembly file.

Go to Environments>Dynamic Simulation.

Note the 2D Contact Joint...

Click the Play button.

I had to create an assembly for this particular action, but for many mechanisms you can do directly with Blocks in part file as shown in the SolidWorks video. This mechanism just happens to be special case because the follower can leave the cam without a Torque value (or Spring) to hold it against the cam. (Just like in the real world.)

https://www.youtube.com/playlist?list=PLp5izJt_zvN08mpY4UcYrzJV2N6QOLAIR

https://www.youtube.com/playlist?list=PLp5izJt_zvN0GnwEUFR1zE06nQvDAWxz2