hexagon logo
Register Sign in
  • Replies 7 replies
  • Subscribers 222 subscribers
  • Views 122 views
  • Users 0 members are here
Options
Related

Position nominals - Datum reference or current alignemnt

seeker
Hello,

I have a problem, we measure the position of the pin and more precisely the position of the pin width. 3-3.2mm pos. 1 (M) DEF.
In order to measure the pin, we have to base it on another element and turn the alignment by a certain degree. Then the center of the pin is X = 0, Z = 0
In the program, and placement on the machine the width is in the Z axis.
The question is whether we can report the position in the current alignment when we care about the left/right movement of the pin, where Z nominal is 0 and shows us our deviation (left/right)

So position, current alignemt, only axis Z.
Or do I have to choose datum reference, and XYZ.

I will add that the results differ by 0.4mm



Cheers !
Parents
  • , without seeing the rest, I can only assume that the original designer made a mistake by including all of the datum references. But first, make sure you have the datums properly defined in your model. Then build out the True Position dimension referencing the Datum References rather than current alignment. Sorry I can't be of more help. Maybe you could create a sketch of the part, without the other dims, or modified dims to help show the datum structure.
Reply
  • , without seeing the rest, I can only assume that the original designer made a mistake by including all of the datum references. But first, make sure you have the datums properly defined in your model. Then build out the True Position dimension referencing the Datum References rather than current alignment. Sorry I can't be of more help. Maybe you could create a sketch of the part, without the other dims, or modified dims to help show the datum structure.
Children
No Data
© 2024 Hexagon AB and/or its subsidiaries. Privacy Policy | Cloud Services Agreement