Revolve joints having me in a spin..

[silures_engineering]

Im a fairly new user and im having the most difficult time understanding how joints work. I've watched countless videos and I must just be missing something obvious . 

I have a very basic conveyor, and I have designed a simple reject gate with fingers on a reject shaft, that are popped-up  to guide the products( flat sheets) down under the conveyor, to a hopper that is yet to me designed. Two cylinders actuate this movement, but no matter how I organise the jopints , or in whatever order I make them, it all goes wrong and i get a pile of errors that give no real insight to what the issues are. 

If i make the shaft have a joint with the bearing inner or outer race, it gives up an error, and I cant make the reject arm, even have a simple rigid joint on to the shaft either. I have used the other joints that are needed for this motion, in the rear of the cylinder, and the pin of the clevis, but the other joints refuse to work.

Any help at this point would be great. 

Thanks

Gareth

[silures_engineering]

 

[jhackney1972 · Accepted solution]

Rather ambitious project for a Fusion beginner.  I only added the required Joints and Rigid Groups to get the cylinder gate to operate.  You need to consider using more Rigid Groups on such things as the ball bearings.  You will be forever and a day trying to add joints to a ball bearing to have it function as a true ball bearing.  Simply create a Rigid Group to the assembly and then add Joints to place it, Rigid, the a Revolve joint between it and the shaft.

I have returned your model but be careful, you may want to Upload it to a new Folder as it will duplicate components if you upload it to the same folder as the original.

If this answers your question, please select the "Accept Solution" on my post. If you need further help, please ask.

 

[silures_engineering]

Thank you John. That has explained the issue perfectly. I'm  and new to fusion , but not to machine design, and yes, it does feel feel like a very steep learining curve.

Making the bearing races a rigid group helps so much. 

Thanks again

Gareth

[TrippyLighting]

One more observation and recommendation: I would not use any modeled threads, unless you want to 3D print things. 

Even simple machines often contain hundreds of threads. Keeping geometry simple will help performance.