gage for 10-Degree Modified Square Thread

[rafazoide]

Hi guys,

I want a gage for my thread application but I had received no quote, the reason is because the thread is to big compared with the diameter (5 degree modified square thread;p=.096, D=.195, h .040). Since it is a lead screw application, I need it that way, I cannot change that relationship. My question is, do you now any good gage vendor? I had received no quote from 3 different gage makers, but I hope there is one out there better than these.

Thanks and best regards.

Rafael GM

[Kelly_Bramble]

I had received no quote from 3 different gage makers

No quote from three different gage makers? I'm assuming from your description that it cannot be built as specified. When gage-makers say they can't build something - it's tough or impossible.

Can you post the thread profile dimensional data on this forum? I suspect that you should really take a hard look at the thread geometry and try to redesign so that it so that a gage can be made by MOST gage-makers.

[RWOLFEJR]

Westport... Used to be called Southern Gage. We've had "customs" made there a time or twenty.

[rafazoide]

Hi Kelly,

Thanks for your reply,

Your assumtion is correct, this is one answer from a gage maker quoted "The combination of small diameter and high helix give this thread a lead angle of approximately 26°. This exceeds the 20° maximum helix capabilities of our equipment - unfortunately we have to "no quote". The other suppliers gave similar reasons, my guessing is that it should be a better or more capable gage maker capable of do this gage. Below I will share the profile that can NOT be modified. I can modify the profile to let say ACME butthis will not fix the lead angle, that can not be modified.

Any sugguestions?

Thank you!


Thread.jpg

[rafazoide]

Thanks RWOLFEJR

I'll contact that vendor.

[Kelly_Bramble]

So, why can you not changes the design that three high precision manufacturing organizations cannot build?

I appreciate design requirements and constraints, however a design is not considered robust or optimal if it cannot be built by most qualified manufacturing organizations at a price that allows the end-item product to be cost effective.