hexagon logo
Register Sign in
  • Replies 22 replies
  • Subscribers 223 subscribers
  • Views 244 views
  • Users 0 members are here
Options
Related

True Position ISO 2768-m

GEO3D
I am currently programming a job from drawing with a hole with no true position specified, it has boxed dimensions which would imply a true position. I've notified the customer to ask what the true position would be and they said I should be able to get the true position from the ISO Spec?

To my knowledge the ISO specification used being ISO 2768-m does not specify a true position to use for boxed dimensions with no positional tolerance, this is usually illustrated on the drawing in a tolerance frame around the hole call out? I'm looking to reply with words to that effect, am I right to say this?

I've checked the standard and I can't see anything on this, any advice would be greatly appreciated Slight smile (see attached image)





Parents
  • I have looked through the 2768 versions I have and it states that the general tolerances found in 2768 does not apply to dimensions with TED (boxed dimensions) or bracketed dimensions.

    What I can understand then is that the only positional tolerance applicable is IF the feature does not have boxed dimensions and the tolerance to use is dictated by the drawing requirement (coarse, fine, medium etc) and the size of the linear dimensions leading up to your feature.

    From what I understand, if the feature have boxed dimensions, it should have a proper GD&T positional callout. 2768-2 doesn't even bother to have a position example.
Reply
  • I have looked through the 2768 versions I have and it states that the general tolerances found in 2768 does not apply to dimensions with TED (boxed dimensions) or bracketed dimensions.

    What I can understand then is that the only positional tolerance applicable is IF the feature does not have boxed dimensions and the tolerance to use is dictated by the drawing requirement (coarse, fine, medium etc) and the size of the linear dimensions leading up to your feature.

    From what I understand, if the feature have boxed dimensions, it should have a proper GD&T positional callout. 2768-2 doesn't even bother to have a position example.
Children
No Data
© 2024 Hexagon AB and/or its subsidiaries. Privacy Policy | Cloud Services Agreement