Flatness per unit length
Flatness per unit length
(OP)
Folks-
A vendor has told me that the flatness of a specific area on a part is 0.001 inches/inch. How would I state this requirement using a feature control frame? I don't have Y14.5.
Thanks
A vendor has told me that the flatness of a specific area on a part is 0.001 inches/inch. How would I state this requirement using a feature control frame? I don't have Y14.5.
Thanks
Tunalover





RE: Flatness per unit length
http://tec-ease.com/gdt-tips-view.php?q=158
Jim Sykes, P.Eng, GDTP-S
Profile Services www.profileservices.ca
TecEase, Inc. www.tec-ease.com
RE: Flatness per unit length
Some questions to you:
What if required length of the area in direction of dim. 200 was 20 and not 50. How would you specify the requirement?
What if I wanted to define per unit area as 20 x full width of the part? How would you do it?
RE: Flatness per unit length
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems
http://www.gdtseminars.com
RE: Flatness per unit length
Flatness GD/T
thread1103-254515: Couple Flatness Questions
Forum
Measurement
Chris
SolidWorks 11
ctopher's home
SolidWorks Legion
RE: Flatness per unit length
Neither scenario is illustrated in the standard, but I would look at using the X/Y/Z (uppercase) labels, to show the layout; in the second scenario, I would use the width dimension value rather than "full width X 20".
Flat| 0.1 / 20[X] X 90[Y]
This is an extension of principles, of course; supported by flatness per unit area AND in '09 (integrated from Y14.41 '03), the use of the X,Y,Z vectors based on drawing views. Though I haven't seen anyone do this yet, I don't see any conflict with the standard.
Jim Sykes, P.Eng, GDTP-S
Profile Services www.profileservices.ca
TecEase, Inc. www.tec-ease.com