2mm Pitch 6mm wide belt profile

[Anonymous]

I am making a turntable that is 6 inches in diameter. I want to use it with a 2mm pitch, 6mm wide belt like those used in 3D Printing. I am learning Fusion 360 and am not sure how to go about making a 6 inch (152mm) disc with the correct pitch profile. I would like to eventually have those parameters set up so that I can vary the diameter. Any help would be much appreciated.

I will 3D Print the 6 inch diameter disc that is 10mm wide, 4 mm for the edging to allow the belt to stay on, 6mm for the belt.

[Anonymous]

@etfrench Thanks, but that site has the spec for the belt. If I understand this thread correctly, that's not the same as the specs for the pulley. I'll poke around ont he site a bit, though, see if I can find a drawing of the actual pulley spec.

[etfrench]

Attached is a file for a 20 tooth GT2-3mm pulley.  You should be able to use it to convert the GT2-2mm file to GT2-3mm.

Note: The file was created in Gearotic and the zillion short line segments haven't been converted to splines.

[Anonymous]

Thanks @etfrench  , but I'm looking for a parameterized template, similar to the one attached earlier in the thread. The file you attached doesn't have any dimensions defined in it, so it's hard to turn it into a general template (although the single-tooth profile is helpful!)

[chrisplyler]

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@etfrench wrote:

The teeth on the pulley must have the correct profile. 

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Really? I looked at a GT2-2 belt, and I'm pretty sure a paddle wheel would work, as long as the blades were thin enough to fit between the belt's teeth and were 2mm apart. Or even a pulley circumference made up of 0.5mm wires spanning the face every 2mm seems like it would work just fine.

No?

[etfrench]

@Anonymous The intent of the attached file was for you to compare it to the parameterized 2mm pulley, then create your own parameterized 3mm pulley file.

@chrisplyler 

[Anonymous]

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@davebYYPCU wrote:

Changed my file to be parametric, I like a challenge, and so far has not broken the file, by changing the parameter for the Circumference, about the limit of my math skills,

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Looks like some recent Fusion update has broken this design. Changing the Ccfn parameter now just results in an angry sketch warning "Compute Failed." 😞