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Re: pic: Rastogi 8wd Iteration 1.2
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Re: pic: Rastogi 8wd Iteration 1.2
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Whenever possible, I like to add threads to a part (tapping or threaded insert) rather than using a nut. One less piece to worry about, one less piece to come loose, one less point you have to reach for assembly/maintenance. Plus installation and removal now only takes one hand! :) But Andrew's 100% right about this: Quote:
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Re: pic: Rastogi 8wd Iteration 1.2
Nice Render,
Slightly curious what's the weight? -RC |
Re: pic: Rastogi 8wd Iteration 1.2
Looking good.
Also, I'll second (third?) the recommendation for using PEM nuts. We use them at my work on our sheet metal chassis, and they're wonderful to deal with. Out of 75 robots, we had one PEM nut pop loose, and the shop that pressed them fixed it for us in less than 6 hours. PEM nuts are the way to go. How many parts in there are standardized? It's always easier for a sheet metal shop to punch out and break more similar parts than differing ones. |
Re: pic: Rastogi 8wd Iteration 1.2
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There are only 3 different parts here. All sideplates at the same, all cross members are the same, and brackets in between plates are the same. |
Re: pic: Rastogi 8wd Iteration 1.2
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Re: pic: Rastogi 8wd Iteration 1.2
Why not connect the two side assemblies along the bottom?
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Re: pic: Rastogi 8wd Iteration 1.2
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Re: pic: Rastogi 8wd Iteration 1.2
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Second, you might consider putting flanges on some of those inside cutouts. Yes, it ends up a little heavier, but because the outer flange is not continuous you will suffer from low rigidity (and low resistance to bending) at certain points; use flanges to compensate. Akash, when you're doing your analysis, be sure to model loading from another robot hitting you from the side at several locations. |
Re: pic: Rastogi 8wd Iteration 1.2
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Could you, or anyone else, elaborate on what types of places flanges can be made on a part like this? I wanted to add flanges on some of the inside pockets but wasn't sure if that was easily possible. Like I said, I'm looking to learn about this as much as possible. :) Thanks. |
Re: pic: Rastogi 8wd Iteration 1.2
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Thanks! |
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