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How do I reduce extremely long assembly regeneration times?

john_k268john_k268 Member Posts: 2

Hello,

I am new to Onshape and creating assemblies in CAD in general. I am attempting to design and model a robot for my school's competition robotics team, but I have run into issues with assembly regeneration times. With only half of the robot's drivebase completed, regeneration times are frequently above 10-15 seconds, making it very difficult to efficiently work on the robot. With the drivebase mirrored so both halves are present, regeneration times appear to double, making the software totally unusable. I assume it is because I am using bad modeling practices, but I have been unable to diagnose the issue. I have tried turning what I have so far into a subassembly as well as reducing the number of derived parts in mirror operations, but neither of these have seemed to help performance. The parts I am using are from official libraries. What am I doing wrong?

The document is here

Answers

  • glen_dewsburyglen_dewsbury Member Posts: 1,228 PRO

    I'm temporarily working on my old lap top which is slow compared to the desk top. When I first opened your document it took a while but after that it sped up . There does seem to be a lot of detail. If you can remove some of the detail I think it will get notably faster. Like the filleted corners in the rail hole corners. I don't know what gear generator you used but they seem to be a major slow down. If you can make configured parts you may want to use design/reduced configurations. When you're are ready to print or make drawings or calculate mass. Then replace the simplified parts with design parts. Simplified gears don't even need all the teeth but they will continue to function normally. The number of mate connecters seems to be excessive. I left a sample of making a mate with out the connecters. For speed I also suppressed the linear arrays. These can be hidden to speed things up while not working on them.

    The other thing to look at would be your computer and network speed. If the video card is lacking there is not much to do except replace if you can. My old lap top wouldn't take any kind of useful video card replacement which is why I switched. too bad since the rest of it is still a good machine. There is a native tool to find what's gobbling up resources. If the net work connection is slow check with the system admin.

    I was going to animate but there were no animatable mates. like revolute or slider or gear mates. Check to see if the document work space is up to the latest.

    image.png

    https://cad.onshape.com/documents/def2fcd9c0c826bf67c047d8/w/f4157bfaa1ca51c576277a9f/e/9ab0a30dd4c5bf12d1791723

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