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ericjed13
Posts: 20
Registered: ‎10-09-2012
Message 1 of 6 (753 Views)

Gears Profile Shift

753 Views, 5 Replies
01-17-2013 12:30 AM

Hello there!

 

Is there an engineer here that knows gear profile shift?

 

I'd like to know of Inventor already has this considered when designing their gears on design accelerator.

 

Thank you. :smileyhappy: 

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JDMather
Posts: 27,438
Registered: ‎04-20-2006
Message 2 of 6 (738 Views)

Re: Gears Profile Shift

01-17-2013 04:36 AM in reply to: ericjed13

I don't know the answer to your question, but most gears are purchased off-the-shelf from gear manufacturers who have experience in gear design.

Will you be manufacturing these or will this be a purchased part?

Please mark this response as "Accept as Solution" if it answers your question.
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karthur1
Posts: 4,257
Registered: ‎04-27-2005
Message 3 of 6 (722 Views)

Re: Gears Profile Shift

01-17-2013 08:26 AM in reply to: ericjed13

Are you talking about backlash allowance?  If yes, then Inventor does allow for this when you export the tooth shape. 

 

 

2013-01-17_1026.png

 

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ericjed13
Posts: 20
Registered: ‎10-09-2012
Message 4 of 6 (703 Views)

Re: Gears Profile Shift

01-17-2013 10:47 PM in reply to: karthur1

Hey, thanks for the response.

 

I'm talking about addendum modification. We design our own gears at our company. We take a standard gear and apply profile shift (aka addendum modification) to customized it.

 

Does inventor also has this function?

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JDMather
Posts: 27,438
Registered: ‎04-20-2006
Message 5 of 6 (691 Views)

Re: Gears Profile Shift

01-18-2013 05:27 AM in reply to: ericjed13

ericjed13 wrote:

. We design our own gears at our company. We take a standard gear and apply profile shift (aka addendum modification) to customized it.

 

Does inventor also has this function?


If you design your own gears you can control your custom profiles with iPart/iLogic.
How much experience do you have with Inventor?

Please mark this response as "Accept as Solution" if it answers your question.
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SKinzel
Posts: 133
Registered: ‎06-12-2007
Message 6 of 6 (679 Views)

yRe: Gears Profile Shift

01-18-2013 09:27 AM in reply to: ericjed13

My company is also a gear manufacturer and I have to say that I'm not overly impressed with the way the gear design portion of Inventor does things.  To me it is combursome and the options under Design Guide seem overly restrictive.  There is profile shift in the calculations but it is called Unit Correction and you have to select the proper option for these values to be editable.

 

One thing that may or may not be an issue for you if you model helical gear teeth.  When you go to make a drawing for that gear your cross sections aren't gonig to look like most gear drawings which don't show "literal" cross sections of a helical gear.  You also may have some issues trying to dimension the OD of the gear since it may not be avaialbe in some views depending upon tooth space location.  Also, as far as I can tell there is no way for Inventor to model hob run out.  It can be easily faked if you are doing spur gears but helical teeth make modeling the hob run out more tricky. 

Stuart Kinzel
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