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  1. AM Engineer

    Relationship of Rule 1 with perpendicularity tolerance

    Hello all. Please find the hand drawn drawing of a rectangular plate. The bottom surface is datum feature A. The perpendicularity call out for secondary datum feature is given. Value is not specified intentionaly. The question is " As per Rule 1, the length dimension of 9.8-10.2 can be...
  2. AM Engineer

    Fig 4-43 ASME 2009

    Hello all. Find the attached figure 4-43 of ASME Y14.5M-2009. Consider the profile of the surface applied to datum feature E. The question is If the actual measured value of the profile of surface tolerance is found to be non conformed then should we proceed to measure the position...
  3. AM Engineer

    DOF constrained by datum feature reference in FCF

    Hello all. I have a question regarding degree of freedom constrained. Does the datum feature referencing in Feature Control Frame constrains Degrees of Freedom of a part or tolerance zone with respect to datum reference frame? Any help shall be highly appreciated. Best Regards Waqas
  4. AM Engineer

    Fig 4-24 of ASME Y14.5-2009

    Hello all. My question is about Fig 4.24 of ASME 2009 version. The figure is about two coaxial diameters and single datum axis. What is the meaning of positional tolerance control applied without any datum feature reference and how do we inspect that? Any response shall b highly...
  5. AM Engineer

    Formula to calculate actual positional tolerance error

    Hello all. I have a question regarding ASME GD& T and I will be thankful to all who respond. The question is Mathematically, in Cartesian Co-ordinate system, the formula to calculate the actual positional error is given is 2 sqrt delta x^2 + dlta y^. We find actual values of x and y, then...

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