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perpendicularity    
n. 垂直,直立

垂直,直立

perpendicularity
n 1: the relation of opposition between things at right angles
[synonym: {orthogonality}, {perpendicularity}, {orthogonal
opposition}]
2: the quality of being at right angles to a given line or plane
(especially the plane of the horizon)


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  • Perpendicularity - Drafting Standards, GD T Tolerance Analysis - Eng-Tips
    The orientation or perpendicularity tolerance zones are oriented to the datum reference frame and not the datum features The surface must then fall within the tolerance zone The perpendicularity specification reads: This feature is perpendicular to the datum reference frame which is established, in order, by datum features A and B
  • Perpendicularity - Drafting Standards, GD T Tolerance Analysis - Eng-Tips
    The perpendicularity must be a refinement of the dimension tolerance, typically half or less The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows
  • Difference between axial total runout and perpendicularity
    Hi all, A part is consisted of two coaxial cylindrical features Is there any difference between the following callouts: 1 Perpendicularity on the end face of one of the features to a datum axis of the other feature 2 Total axial runout on the same end face to the datum axis In terms of
  • True Position of a Feature to One Planar Datum - Eng-Tips
    Position is used here because B is a pattern of 2 holes and the tolerance needs to control their relative location (spacing) as well as their orientation to A So it needs to be a position tolerance and not perpendicularity If B was a single hole, then a perpendicularity tolerance would be appropriate Evan Janeshewski
  • Perpendicularity Callout - Drafting Standards, GD T . . . - Eng-Tips
    The perpendicularity callout is a zone tolerance of the perpendicularity of the flange on the tube to the axis of Datum A You take the basic location of the flange and project a line 1 2 the callout window one direction and 1 2 the other and that is your target window for the OD
  • Differences -perpendicularities- - Eng-Tips
    Adding perpendicularity controls to B C of 7-3 only places a constraint on deviation of each single planar surface Adding perpendicularity to B C of 7-4 now places a constraint on deviation of each PAIR of planar surfaces (aka FOS) - which leads into another difference, since they are FOS in 7-4 one could apply RFS (resolved geometry
  • Perpendicularity callout with curved datum 1 - Eng-Tips
    perpendicularity: the condition of a line element, surface, tangent plane, feature’s center plane, or feature’s axis at an implied or specified basic 90° perpendicular) angle relative to one or more datum planes or datum axes
  • Perpendicularity to Two Datums - Drafting Standards, GD T . . . - Eng-Tips
    Y14 5-1994 shows perpendicularity to two datums, which I've always used (Fig 6-35, p 182) Y14 5-2009 and 2018 show perpendicularity to two datums but add an angularity constraint to A|B (Fig 6-4, p 101) I believe the intent is the same, but the addition of the angularity FCF is just confusing in my opinion
  • GD T: How to inspect tertiary datum feature position tolerances . . .
    First we inspect diameter hole B, then we inspect perpendicularity of this datum feature to plan A (and if hole go to the MMC it gave as bonus tolerance on perpendicularity) After that it time to inspect feature C, with is slot It have general tolerance of +-0 1 and it gives us bonus tolerance on position





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