A coworker of mine and I are debating on whether or not Basic Dimensions have tolerances. We need a moderator. Anyone?
The Debate
Collapse
X
-
-
Originally posted by operator1 View PostA coworker of mine and I are debating on whether or not Basic Dimensions have tolerances. We need a moderator. Anyone?
Originally posted by rangerboat72 View PostDo you have pictures? LOL...
WCS...
Comment
-
Originally posted by operator1 View PostA coworker of mine and I are debating on whether or not Basic Dimensions have tolerances. We need a moderator. Anyone?sigpic
Xcel 15-20-10 - PFXcel 7-6-5 - Merlin 11-11-7 - Romer Absolute 7525SI
PCDMIS 2012
Windows Office XP
Comment
-
Originally posted by rangerboat72 View PostOk, back to the question. If the [BASIC] dimension is used to establish a datum or is used to establish a point of reference (where to take a measurement), then no it does not specifically have a tolerance.
And no I did not send them to you... I keep my word... sorry.
Comment
-
Originally posted by operator1 View PostA coworker of mine and I are debating on whether or not Basic Dimensions have tolerances. We need a moderator. Anyone?Originally posted by craiger_ny View PostYour tolerance is the target zone defined in the feature control frame.
This particular customer is French owned. The prints originated over there.
To answer Op1's question a BASIC dimension should be tied to an FCF. Otherwise it should not be basic. My opinion.Perry
B&S Mistral
3.207 Beta on XP
Older'n dirt
Comment
-
Originally posted by Perry Fisher View PostWe have the same discussions with a customer who makes everything a basic dimension. Then their general tolerance is a profile callout to cover dimensions not tied to an FCF. I talked with their CMM programmer and settled on applying ±1/2 the general tolerance profile callout to the affected dimensions. Right or wrong that's what how my customer wanted them reported.
This particular customer is French owned. The prints originated over there.
To answer Op1's question a BASIC dimension should be tied to an FCF. Otherwise it should not be basic. My opinion.Bill Jarrells
A lie can travel half way around the world while the truth is putting on its shoes. - Mark Twain
Comment
-
Same as above - no tolerance it is (should be) located elsewhere.
I do however report basic dimensions but apply no tolerance. Why? It doesn't do much good to tell a machinist "This hole is out of tolerance for its location." What are they going to ask you??? "Which way and how much?" The information they need to know to adjust the machining to make it right.
Comment
Related Topics
Collapse
-
by seppleyI have a quick question.
I have been told by corporate engineering to take the General Notes, Surface Profile Feature Contrl Frame on...-
Channel: PC-DMIS for CMMs
07-26-2013, 04:43 PM -
-
by giantslayerHi everyone,
We have a casting that might not clean up all the way once we machine it. Some of the people working on this project (because...-
Channel: PC-DMIS for CMMs
09-18-2015, 03:48 PM -
-
by kbottaNeed some help w/ a few itmes.
aNYONE KNOW WHAT THIS MEANS?
Box dimension (Could be basic, but no FCF's are found on drawing)....-
Channel: PC-DMIS for CMMs
04-10-2008, 05:42 PM -
-
by DannyrlI get prints covered with basic(boxed) dimensions. Everything I read about GT&T says a bisic dimension should tie back to a feature control frame....
-
Channel: PC-DMIS for CMMs
03-16-2006, 04:24 PM -
-
by drewk1We get a lot parts where the tolerance is relative to the dimension size ie.
< 10 ± 0.26
10-16 ± 0.27
16-25 ± 0.29...-
Channel: PC-DMIS for CMMs
09-30-2008, 03:56 AM -
Comment