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Profile Of a Surface Control : GD&T Basics

 

  • Profile of surface control is used to control part surface. It makes a 3-Dimensional tolerance zone around a surface.
  • Profile of a surface tolerance: Controls the size, location, orientation and foam of any surface.
  • When the profile of surface control is specified, tolerance zone is uniform boundary along full length and width of the surface.
  • Usually when surface profile is required, there are no tolerances on the dimensions that describe the surface and use the GD&T callout to give the acceptable range.
  • Datum reference is required to control Profile of a Surface.

Profile of Surface Control Representation:


Profile of Surface Control Tolerance Zone


Measurement Of Profile of surface Control

 

  • Dial Gauge is followed along the true profile of complete surface to record the variation keeping datum plane fixed. Profile is generally measured using CMM.
  • Variation is measured across the various points along the true surface.

 

 


Related Articles

Straightness

Flatness

Circularity

Cylindricity

Profile Of Line Control

Profile Of Surface Control

Perpendicularity

Parallelism

 

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