GD&T True Position

[BottleBob]

To All:

Coincidentally, I've been thinking recently about making a post about
GD&T True Position, but today when cruising through Practical Machinist
I noticed that Joe788 made a post that referenced a site that
simplifies the explanation of True Position. Here's the site:

http://www.cmmquarterly.com/site/index.php?option=com_content&task=view&id=75&Itemid=78

If that one wraps, try this one (it's the same site).

http://tinyurl.com/3uy6gd


When getting a Diameter True Position callout, I divide it by two to
get the Radial True Position and then multiply that figure by .7071 to
get the max amount you can be off in a 45 degree COMBINED X & Y direction.


There are online True Position calculators like the following that can
take Maximum or Minimum Material Conditions into consideration.

http://www.i-logic.com/utilities/truepos.asp

[Bipolar Bear]

Post by BottleBob
Coincidentally, I've been thinking recently about making a post about
GD&T True Position, but today when cruising through Practical Machinist
I noticed that Joe788 made a post that referenced a site that

http://www.cmmquarterly.com/site/index.php?option=com_content&task=view&id=7
5&Itemid=78

Post by BottleBob
If that one wraps, try this one (it's the same site).
http://tinyurl.com/3uy6gd
When getting a Diameter True Position callout, I divide it by two to
get the Radial True Position and then multiply that figure by .7071 to
get the max amount you can be off in a 45 degree COMBINED X & Y direction.
There are online True Position calculators like the following that can
take Maximum or Minimum Material Conditions into consideration.
http://www.i-logic.com/utilities/truepos.asp

I have a slide rule calculator someplace--great for harassing greenhorn
designers who've never heard of y 14.5 yet insist on pulling geometric
tolerencing symbols out of their assholes.

--

[Cliff]

Post by BottleBob
Coincidentally, I've been thinking recently about making a post about
GD&T True Position, but today when cruising through Practical Machinist
I noticed that Joe788 made a post that referenced a site that
http://www.cmmquarterly.com/site/index.php?option=com_content&task=view&id=75&Itemid=78
If that one wraps, try this one (it's the same site).
http://tinyurl.com/3uy6gd
When getting a Diameter True Position callout, I divide it by two to
get the Radial True Position and then multiply that figure by .7071 to
get the max amount you can be off in a 45 degree COMBINED X & Y direction.
There are online True Position calculators like the following that can
take Maximum or Minimum Material Conditions into consideration.
http://www.i-logic.com/utilities/truepos.asp

You trying to confuse poor jb again?