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True Position Calculation Question
[COLOR=#000000][FONT=Tahoma]Hello folks[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]Firstly, thanks to everyone who takes the time out on this forums to help out. Really appreciate.[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]Ok bit of a newbie and requesting some help on a true position calculation[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]Attached a sample format, am very clear about the dimension Y (which would help me with delta Y)[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]For the X my belief is, since the datum C is specified on axis, it would be "theoritical centre of the width W" and the basic X dimensions would be D2/2 (for inner holes) and D1/2 for outer holes.[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]1. Would this be correct? and[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]2. Practically how would I be able to measure this? Say on a CMM...how would the datum be determined as 0 point for X?[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]3. Am sure we cannot but throwing it out there to check it (to get a "physical reference" some people have been recommending to subtract D2 from W and then divide it by 2 to get the centre of the outside holes (i think that is not correct but do not have a reference for the correct theory as well). Closest I can think of is Fig 4-33 of ASME Y14.5-2009. There is no note on the dwg which states holes are equidistant from the edges so a highly doubtful[/FONT][/COLOR]
[COLOR=#000000][FONT=Tahoma]If somebody could guide me here, would appreciate. As always thanks for your time and reading this - Appreciate[/FONT][/COLOR]