The final difference I will point out here is the ISO default of Independancy versus the ASME default Simultaneous Requirement.[/FONT]
As far as I understand it, this difference is a difference in wording only - ISO says default is independancy, and then lists a lot of cases where it should be simultaneous (patterns around a common center point/axis, MMB on datums, etc.), so I think the final outcome is the same. ISO is independant only in those cases where simultaneously wouldn't change the result… I may be missing something, though…
There are also changes coming to ISO, to eliminate all defaults everything should be explicit on the print, but that will take a while before all prints are updated…
I also belive there is something about the (E), making it the default (in some cases?), but I don't have our standards expert available right now, and don't care for reading through umpty-eleven hundred pages again…
The only big difference, as I see it, is the definition of profile deviation - 2 x max(abs(MAX), abs(MIN)) instead of MAX - MIN. And in reality, they are both insufficient - you need to look at the MAX and MIN separately.
The final difference I will point out here is the ISO default of Independancy versus the ASME default Simultaneous Requirement.[/FONT]
As far as I understand it, this difference is a difference in wording only - ISO says default is independancy, and then lists a lot of cases where it should be simultaneous (patterns around a common center point/axis, MMB on datums, etc.), so I think the final outcome is the same. ISO is independant only in those cases where simultaneously wouldn't change the result… I may be missing something, though…
There are also changes coming to ISO, to eliminate all defaults everything should be explicit on the print, but that will take a while before all prints are updated…
I also belive there is something about the (E), making it the default (in some cases?), but I don't have our standards expert available right now, and don't care for reading through umpty-eleven hundred pages again…
The only big difference, as I see it, is the definition of profile deviation - 2 x max(abs(MAX), abs(MIN)) instead of MAX - MIN. And in reality, they are both insufficient - you need to look at the MAX and MIN separately.
