Inventor General Discussion

Inventor General Discussion

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*Expert Elite*
JDMather
Posts: 27,459
Registered: ‎04-20-2006
Message 61 of 65 (219 Views)

Re: Posting a project for comments

05-09-2012 04:16 AM in reply to: donovandigital

I dimension or constrain everything.  Geometric constraints are (should be) obvious and take the place of many (most) dimensions.

The dimensions are the dimensions that will be needed out on the shop floor.  By fully constraining everything you ensure that the model is not accidently released for manufacture with a missing dimension.  (I worked out on the shop floor for 8 years - I can tell you that missing dimensions is a costly problem.)

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*Expert Elite*
JDMather
Posts: 27,459
Registered: ‎04-20-2006
Message 62 of 65 (207 Views)

Re: Posting a project for comments

05-09-2012 05:52 AM in reply to: donovandigital

donovandigital wrote:

Really hope I can build this....


 

Did you verify the specs on the threads.
As indicated earlier 7mm is an unusual thread.

 

Please mark this response as "Accept as Solution" if it answers your question.
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Autodesk Inventor 2014 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015-SP1 64-bit
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Valued Contributor
donovandigital
Posts: 63
Registered: ‎02-16-2012
Message 63 of 65 (196 Views)

Re: Posting a project for comments

05-09-2012 07:43 AM in reply to: JDMather

Re dimensions, that is what I thought.

 

Re thread

 

To be honest I don't know how to check this. Can I do this with calipers?

 

Thanks

 

Joe

*Expert Elite*
JDMather
Posts: 27,459
Registered: ‎04-20-2006
Message 64 of 65 (169 Views)

Re: Posting a project for comments

05-09-2012 01:05 PM in reply to: donovandigital

Measure the diameter of the thread.

Typically it will be slightly undersize.  A 7mm thread might measure something like 6.8mm.

Find the pitch by measuring the distance across the crest of 11 threads and divide by 10 (you can just measure the distance from one to the next, but it is sometimes easier to get 10 distances and move the decimal place)

 

The diameter and pitch should match the list in the aviable Hole Feature.

Yes, use calipers.  (there is a special tool to find pitch, but you can do this with calipers as described.).

 

You could also go to the local hardware store and purchase several nuts of sizes close to what  you think you measure. (Be sure to keep them labeled.

 

You measure the external thread diameter (rod) not the hole.

Please mark this response as "Accept as Solution" if it answers your question.
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Valued Contributor
donovandigital
Posts: 63
Registered: ‎02-16-2012
Message 65 of 65 (153 Views)

Re: Posting a project for comments

05-09-2012 04:38 PM in reply to: JDMather

Will do so this week

 

But - are all the parts I posted OK?

 

Thanks again

 

Joe

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