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Unread 11-01-2014, 11:31
Joe Johnson's Avatar Unsung FIRST Hero
Joe Johnson Joe Johnson is offline
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Re: [Ri3D] BOOM DONE. We're not done...

Quote:
Originally Posted by geomapguy View Post
We talked with our machining sponsor about possibly having a sprocket CNC'ed once we finalize our gearing design. (since there's not a large enough COTS sprocket that we can find) All depends on schedule of the CNC production line, G-code, and lead time. So a maybe haha

Thanks
Laser cut ABS is awesome. I suggest finding someone nearby with a Zing cutter. Just works.

See the attached zip package with a bunch of stuff in it.

The 120T #25 sprocket, plus the support, plus the assembly.

I gave you the native files in a student version of SolidWorks 2013/4 ( you can't open them in the non-student version nor in earlier versions of SW).

I have also provided STEP files of the parts and the assembly.

I have also included DXF files of the sprocket and the plate

Most cutters can work with either the DXF or the STEP file.

Note the thicknesses. Also when you make the sprocket you will have to use a file or sand paper to bevel the edges to let the chain sit tight.

I have also I have improved the part from my original, putting holes for easy alignment & clamping using #10 screws.Will I was at it I added the "standard FIRST bolt pattern" in the middle.

Good luck,

Dr. Joe.
Attached Files
File Type: zip 120toothsprocketPackage.zip (3.01 MB, 26 views)
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