ISO - Flatness CZ of Offset Features | Eng-Tips
Jul 24, 2024 · Hello All, I received a customer print for review with the following callout for [Flatness | 0.1 CZ] for the two identified surfaces. I created an example with a simplified model below, but kept all of …
Flatness at MMC? | Eng-Tips
Mar 5, 2008 · The flatness callout is not attached to a surface. It is floating below the thickness dimension/tol, similar to a feature tolerance of position control. On page 5-15 of the book, table 5-1, a …
Flatness between two parts | Eng-Tips
Jan 23, 2012 · Flatness is a self-contained tolerance that does not reference a datum, on the current part, or any other part. You specify flatness on each of your fabrication drawings.
Flatness or Profile of a Surface? | Eng-Tips
Oct 18, 2006 · Taking a step back from that, if you have only one surface, the surface profile without any datum reference only controls the form; which form it controls is based on the type of feature (line …
Specific Area Flatness | Eng-Tips
Aug 4, 2020 · Hi all, I'm just curious how some of you may call out a specific area on a part with flatness (rather than the whole surface). I want to control flatness of 5"x5" square, centered in a 8x12 part. I …
Flatness/Parallelism Question | Eng-Tips
May 20, 2008 · Flatness is a unilateral tolerance in which the surface must not exceed using a 3 point set up to create a plane. It can also be performed on a CMM with a scan mode using a best fit …
GD&T: Flatness - Where does it start from? | Eng-Tips
Mar 16, 2011 · The fact is the feature may be within the flatness tolerance if a more optimal alignment to the surface is found. In the attached file I've attempted to simplify the alignment of a flatness …
Flatness and Parallelism (again) | Eng-Tips
Mar 2, 2009 · The parallelism requirement and the flatness requirement are separate, but the feature must reside within both zones. The only connection between them is that the flatness tolerance must …
Flatness vs. Parallelism | Eng-Tips
Oct 22, 2012 · Hi, I would like to know if there is principle of tolerance or dependence between Flatness and Parallelism ? for example: cube with [datum A flatness 0.02 (mm)] on its one face and on the …
Straightness vs flatness | Eng-Tips
Dec 5, 2007 · A part that came in at LMC on the thickness would be allowed more flatness variation than a part produced at the MMC size because your check boundary is fixed at MMC + the flatness …