Author Topic: plugin to generate GT2 pulley?  (Read 144 times)

Offline hitchhiker

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plugin to generate GT2 pulley?
« on: October 09, 2020, 14:33:51 pm »
hi!

i need a small gt2 pulley... i know cambam has a plug in to get htd pulleys with a 5mm pitch.

is it possible to change sonething to get a 2mm pitch?

thanks

Offline dh42

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Re: plugin to generate GT2 pulley?
« Reply #1 on: October 09, 2020, 14:59:54 pm »
Hello

Draw a 5mm pulley then apply a 40% scale factor ;)

are you sure that GT2 as the same profile than HTD ?

++
David

Offline hitchhiker

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Re: plugin to generate GT2 pulley?
« Reply #2 on: October 09, 2020, 16:24:47 pm »
 its not complete the same but i found another option!

i calculate the diameter of the pulley and use this with the shapes plugin. then i put in hole circle.

36 teeth.
1.5mm hole diameter.
22.41mm circle diameter.

in the center i drill a 3.8mm hole.

after this i ream it to 4mm.
then i glue it to a 4mm hss shaft and turn it down on my lathe.

this is my idea.

now i drink 2 coffees and start my desktop mill. :)

i hope it works.
if not i must wait to monday to get my package :)
but if it works its great.i can complete my rotary axis.


thanks

Offline dh42

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Re: plugin to generate GT2 pulley?
« Reply #3 on: October 09, 2020, 16:46:19 pm »
A HTD 36T 5mm resized to 40% ... the holes for the teeth are 1.2mm of Ø ; the external Ø seems to match with your 22.41mm

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David

Offline Garyhlucas

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Re: plugin to generate GT2 pulley?
« Reply #4 on: October 09, 2020, 18:22:30 pm »
If you are still stuck you can email me gary.lucas@verizon.net as I have Gearotic which can generate the correct profile I believe.
Gary H. Lucas

Have you read my blog?
 http://a-little-business.blogspot.com/

Offline hitchhiker

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Re: plugin to generate GT2 pulley?
« Reply #5 on: October 09, 2020, 18:30:51 pm »
hello thank you!


my generated profil is right.
i generate with freescad a pulley for gt2 belts.

after this i save it as dxf and load it in cambam.
then i overlay it with my holecircle method.
its okay!

but today i only go sleep.. i eat big pizzas and now i am tired :)

i will send tomorrow pics from my process.

i use the drill operation.
after this i machine it on the lathe .

thank you all

Offline EddyCurrent

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