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Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5
3

Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

(OP)

Hi,

I need to rotate arrow lines of a dimension to a particular angle.
I can do this for horizontal or vertical dimensions by changing the value of F in Annotation style/ Line/Arrow. But problem comes when I have to do this for parallel or perpendicular dimensions.
I am using NX 7.5.3.

Please Help!
Regards,
Ishant

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

By definition, 'Parallel' and 'Perpendicular' dimensions are ONLY oriented relative to the objects selected whereas 'Horizontal' and 'Vertical' are oriented relative to the Drawing. The so-called 'F' value is way of changing the orientation relative to the DRAWING only. Therefore this 'modification' can only be applied to dimensions, such as 'Horizontal' and 'Vertical', created relative to the Drawing, NOT the selected objects. And if you read the Help files (just press 'F1' while the 'Dimension Style' dialog is open) you will see that this is explicitly caveated.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

That's 'other people's software', not NX. Besides, can you provide references to any 'Drafting standard' which supports this 'Extension Line Angle' scheme for anything other than 'Horizontal' and 'Vertical' dimensions?

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

(OP)
OK.
I understood.

Thanks,

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

2
ASME Y14.5-2009 ¶ 1.7.2 "Extension lines are used to indicate the extension of a surface or point to a location preferably outside the part
outline. See para. 1.7.8. On 2D orthographic drawings, extension lines start with a short visible gap from the outline of the part and extend beyond the outermost related dimension line. See Fig. 1-8. Extension lines are drawn perpendicular to dimension lines. Where space is limited, extension lines may be drawn at an oblique angle to clearly illustrate where they apply. Where oblique lines are used, the dimension lines are shown in the direction in which they apply. See Fig. 1-10."

While the examples given only show horizontal or vertical dimensions, the text does not limit it to those. Since extension lines at odd angles are often used depending on the feature they are defining, oblique dimensions at an angle are allowable under the standard (as long as the dimension line is in the direction in which it applies).
Call it an extension of principal. winky smile

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

If you feel that we've misinterpreted the standards, then please feel free to contact GTAC and have them open an IR which will be evaluated by the Product Management team and if they agree with you, it will either be converted into a PR, or more likely, an ER.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

Sorry, I don't have a dog in this race as I never use oblique dimensions. Just doing as you asked by providing references to an accepted Drafting standard.
I heartily recommend that anyone that does use such dimensions do as John suggests and submit an IR.

“Know the rules well, so you can break them effectively.”
-Dalai Lama XIV

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

Although it will require some manual work, you can try to draw oblique extension lines with a sketch. Not exactly what you're looking for, but a valid workaround.

RE: Rotating Perpendicular or Parallel dimensions i.e. value of F in arrow styles NX 7.5

I have encountered oblique dimensioning before. I prefer its use, over having to interpret yet another detail on a drawing.

Proud Member of the Reality-Based Community..

To the Toolmaker, your nice little cartoon drawing of your glass looks cool, but your solid model sucks. Do you want me to fix it, or are you going to take all week to get it back to me so I can get some work done?

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