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Distinguished Contributor
James__S
Posts: 115
Registered: ‎01-27-2014
Message 1 of 17 (402 Views)

how to cut out worm case

402 Views, 16 Replies
01-27-2014 04:55 AM

Hello

 

Using Inventor 2013/2014 .. how do i cut out the worm case so that the worm can rotate correctly inside..it will be part of a pump (mono)

 

Cheers

 

James

Distinguished Contributor
James__S
Posts: 115
Registered: ‎01-27-2014
Message 2 of 17 (349 Views)

Re: how to cut out worm case

01-28-2014 08:28 AM in reply to: James__S

Hi

 

Still looking for advice on how best to approach the cut.What tools should i use and i shall attempt myself to make the cut.I am new to Inventor so need some guidance on how best to create the cut to suit the worm

 

Best Regards

 

James

*Expert Elite*
JDMather
Posts: 26,186
Registered: ‎04-20-2006
Message 3 of 17 (345 Views)

Re: how to cut out worm case

01-28-2014 08:40 AM in reply to: James__S

You are going to have to supply more information.

Pictures of actual parts?

Url to similar parts?

 

First thing I noticed is that your circle sketch is not perpendicular to the Sweep path, therefore the twisted "wire" is not round.  (slightly oval)

Please mark this response as "Accept as Solution" if it answers your question.
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Distinguished Contributor
James__S
Posts: 115
Registered: ‎01-27-2014
Message 4 of 17 (328 Views)

Re: how to cut out worm case

01-28-2014 10:33 AM in reply to: JDMather

Hope these pictures can help

 

Thanks

*Expert Elite*
dan_inv09
Posts: 2,299
Registered: ‎12-12-2006
Message 5 of 17 (315 Views)

Re: how to cut out worm case

01-28-2014 02:43 PM in reply to: JDMather

Pictures like these?

Distinguished Contributor
James__S
Posts: 115
Registered: ‎01-27-2014
Message 6 of 17 (289 Views)

Re: how to cut out worm case

01-29-2014 05:02 AM in reply to: dan_inv09

Thanks.Those pictures are exactly what i am wanting to replicate

 

Hopefully some help on how to create would be appreciated

 

Thank you

Distinguished Contributor
James__S
Posts: 115
Registered: ‎01-27-2014
Message 7 of 17 (268 Views)

Re: how to cut out worm case

01-29-2014 10:18 AM in reply to: James__S

Thoughts please.It looks like either the 100% or 200%.

 

Best regards

 

James

*Expert Elite*
JDMather
Posts: 26,186
Registered: ‎04-20-2006
Message 8 of 17 (264 Views)

Re: how to cut out worm case

01-29-2014 10:33 AM in reply to: James__S

This is not going to be an easy problem.
It would be best if you made some attempts and attach them here for pointers.

Please mark this response as "Accept as Solution" if it answers your question.
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*Expert Elite*
dan_inv09
Posts: 2,299
Registered: ‎12-12-2006
Message 9 of 17 (256 Views)

Re: how to cut out worm case

01-29-2014 10:57 AM in reply to: JDMather

http://www.youtube.com/watch?v=F3-rpy8qrOA&list=PLWbKJby--ZPSU6srfO18AQns_Am-5cETi

 

"The progressive cavity pump consists of a helical rotor and a twin helix, twice the wavelength and double the diameter helical hole in a rubber stator."

from http://en.wikipedia.org/wiki/Progressive_cavity_pump

 

it looks like it might be as simple as

Distinguished Contributor
James__S
Posts: 115
Registered: ‎01-27-2014
Message 10 of 17 (230 Views)

Re: how to cut out worm case

01-30-2014 06:11 AM in reply to: James__S

Thanks for the part.It looks very much like the stator.

 

Would the worm also be made using the Coil tool?

 

Cheers

 

James

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