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Kartoffel  
#1 Posted : Wednesday, March 1, 2023 7:11:23 AM(UTC)
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I have some gears from a toy rc-car gearbox, I want to rebuild.
I thought this would be an easy task with the new gear-tool in the powerpack of sharkcad 12.
But I don't get a proper result. The gear, the tool is creating, is way too big...

Edited by user Wednesday, March 1, 2023 7:14:25 AM(UTC)  | Reason: Not specified

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UGMENTALCASE  
#2 Posted : Wednesday, March 1, 2023 7:42:43 AM(UTC)
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If I remember rightly the input needs to be in inches. Don't know why but when I tried this out years ago it was the issue then
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jlm  
#3 Posted : Wednesday, March 1, 2023 8:19:53 AM(UTC)
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Originally Posted by: Kartoffel Go to Quoted Post
The gear, the tool is creating, is way too big...

Hello Kartoffel,
When the gear tool was introduced there was a confusion in units : mm were changed into inches.
It makes everything bigger with factor 25.4.
I thought this had been solved...

Edited by user Wednesday, March 1, 2023 8:20:52 AM(UTC)  | Reason: Not specified
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GARLIC on 3/1/2023(UTC)
Kartoffel  
#4 Posted : Wednesday, March 1, 2023 8:34:14 AM(UTC)
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Thanks for the hint.
With the module in inches and the radius in mm it works. Stupid!
But in the end, the tooth-shape is totally different, so I will manually design one tooth and then go on with the polar duplicate ...

Markus
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damhave on 3/1/2023(UTC)
jlm  
#5 Posted : Wednesday, March 1, 2023 9:18:08 AM(UTC)
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Originally Posted by: Kartoffel Go to Quoted Post
Thanks for the hint.
I will manually design one tooth and then go on with the polar duplicate ...

Markus


In the past I used a web site to design gears, it was free and exporting DXF to shark.
I think it was that one :
Gear generator tool

Edited by user Wednesday, March 1, 2023 9:23:22 AM(UTC)  | Reason: Not specified
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MaiFy on 3/1/2023(UTC)
Kartoffel  
#6 Posted : Thursday, March 2, 2023 5:25:53 AM(UTC)
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I used this program now: http://forestmoon.com/Software/GearDXF/

But in the end, it is very dissapointing for me, that the "gear-tool" has only basic parameters + the problem with the units...

Markus
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Tim Olson  
#7 Posted : Thursday, March 2, 2023 2:50:41 PM(UTC)
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The unit issues should have been fixed in V14.
Tim Olson
IMSI Design/Encore
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MPSchmied  
#8 Posted : Friday, March 3, 2023 5:47:02 AM(UTC)
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Originally Posted by: Tim Olson Go to Quoted Post

The unit issues should have been fixed in V14.


How about switching completely to mm?

This problem in this thread is a problem with relative and absolute values.

I have such a problem found i the sheet metal tool of MegaCAD. Wen i load there the imperial Models from Shark, i need in the Sheet Metal tool then values in Inches.

Switch the native system please to Millimeter because i have no possibility to change a 3D-Modal from Imperial in Millimeter. It stay everytime in Imperial, because the programs work with relative values, it doesn't matter until they work with absolute values.
OS: Windows 10 | CPU: AMD Ryzen 7 2700 | RAM: 32 GB | Graphic: AMD Radeon RX Vega 56 | SharkCAD 15 Pro | Unit: mm
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GARLIC on 3/3/2023(UTC)
relaxibus  
#9 Posted : Friday, March 3, 2023 7:54:42 AM(UTC)
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Yeah, I had the same issue using the tool. Pitch was in inch on a metrical Shark.

Another online tool cool to explore may be to add some features in the Shark Gear Tool? https://drivetrainhub.com/gears/
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GARLIC on 3/3/2023(UTC)
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