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Perpendicularity axis to axis

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SeasonLee

Mechanical
Sep 15, 2008
918
Please ref to the attached figure, the perpendicularity tolerance zone is two parallel planes that are .002 apart or a .002 diameter cylinder ?

The hole could slant to any direction, so I believe a cylindrical tolerance zone will be reasonable. How do you think ?

Season
 
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With the way it has been specified, it is not a .002 diameter cylinder for sure - diameter symbol in perpendicularity FCF is missing.
If you are fine with both axes tilting to any direction within specified limit, cylindrical tolerance zone is much more reasonable choice.
 
Should you specify cylindrical tolerance zone, you may also want to consider adding secondary datum to prevent free rotation of your tolerance zone around primary datum axis.
 
In the second example it would not actually add any additional control to use a cylindrical zone.
Frank
 
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