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using features from another program for dimensioning

jea2252

I need help with checking the true position of a circle using a datum from another program for mating holes. I have only used single variables on features and dimensions within the same program. I am new to programing with expressions and I am struggling to get a grasp on it. I am looking for a script I can copy and edit. I am thinking i need to use file input/output commands for this. 

CIR1 X1.5 Y1.5 Z0   will be assigned datum D, positioned .010 from ABC on program 1  

CIR2 X1.5 Y1.5 Z0  positioned .005 from datum D on program 2

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  • 0

    Another option you may have if you can align to the matching features is use the equate alignment feature.

    I had a customer that needed to do a run out of two bearing bored of an assembled gearbox housing but could only measure the housing in assembled. 

    you just need to be able to measure both parts and between making the equate alignment on both parts, don’t have any intermediate alignments like a readpoint alignment. This is where I first went wrong but Neil challinor confirmed that when the equate alignment is performed properly, you can dimension across both parts as if they were measured assembled.

  • 0 in reply to David_Campbell

    Hey David, is there a specific reason why readpoint alignments shouldn't be used in between equate alignments? We have struggled in the past with Equate, but I did not realize you shoud not use a readpoint alignment in between.

    Can you still use a readpoint as long as you do not align to it?

    Does that affect how the Original and Equate alignment gets calculated?

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