Perpendicularity

[[Lu...]]

Hello,
would you please help me with evaluation about Perpendicularity. What is a reference lenght in my case?

ASME Y14.5M-1994
Reference length is 2mm or 27mm? I think 27mm

Thank you for help
Lukas

IMG_20210219_140813.jpg

[[To...]]

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The reference length is equal to 2, the length of the 8mm diameter. Create a cylinder feature. Edit the Depth field to 2 and you should be all set. If working from a model, just extract a cylinder and all info should be there.

The reference length in the perpendicularity takes the depth value from the cylinder. So, you can change it in either place.

[[SH...]]

While editing the reference length , I did not observe any variation in perpendicularity.

[[To...]]

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I just tested editing the reference length in a perpendicularity using simulated data and I observed immediate changes to results.

Screenshot 2021-02-19 105259.jpgScreenshot 2021-02-19 104908.jpgScreenshot 2021-02-19 104926.jpg

[[Ma...]]

One question - why you are using "Projected tol." when no P sign in drawing?

[[Ja...]]

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Maybe you didn't increase the reference length enough to see a change with out increasing you number of decimal places.

[[To...]]

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If you create a cylinder using manual points, the depth or length of the cylinder is defined by the distance between the lowest and highest point. On a 2mm long cylinder, the depth is likely to be less than 2mm because you won't be taking points at the top or bottom edges. As part of correcting the nominal values, good practice would be to edit the depth to the 2mm length shown on the drawing. The second option would be to edit the reference length in the perpendicularity.