Valve/Camshaft Motion Difficulties

Anonymous — Mon, 27 Jun 2016 07:12:12 GMT

Hi!

I recently ran into a problem that I can't seem to wrap my head around. I'm modeling a two-stroke engine, and everything is going fine except for the valve and camshaft!

I've enabled a contact set between the valve and camshaft, but the valves are simply pushed upward (when the camshaft rotates) and aren't pressed back downward onto the camshaft.

I've also used a Motion Link to simulate the valve extending upward when the camshaft should be extending it, but these motions are cyclical (not what I'm trying to demonstrate), and I'm hoping there's a better way to convey them.

I was wondering if I could design a spring system that would keep the valves touching the camshaft at all times while it rotates, but I'm not sure if Fusion 360 has a force-spring system available.

I posted pictures of the dilemma below. Let me know if you need any more information!

Thanks so much!

Steven

Re: Valve/Camshaft Motion Difficulties

HughesTooling — Mon, 27 Jun 2016 08:56:24 GMT

Take a look at this thread, I attached a sample file to the thread as well.

Mark

Edit, You can open the file with New Design From File on the file menu.

Re: Valve/Camshaft Motion Difficulties

Anonymous — Tue, 28 Jun 2016 07:33:48 GMT

Thanks for the help! My model is now pretty laggy due to the contact sets, but it works conceptually. Thanks again!

topic Re: Valve/Camshaft Motion Difficulties in Fusion Design, Validate & Document Forum

Valve/Camshaft Motion Difficulties

Re: Valve/Camshaft Motion Difficulties

Re: Valve/Camshaft Motion Difficulties