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  1. filippoGDeT

    Edge as Datum Feature for Primary Datum

    Dear GD&T experts, I was in trouble to understand if I can define in the drawing a primary datum starting from a datum feature edge. The particular shape of this washer do not allow me to select a plane as primary datum feature. I did not find any example so far. Is that correct following...
  2. filippoGDeT

    GD&T Involing Conical Surface

    Dear All, I've trouble to setup a proper DRF for the part reported in the picture. The datum concept here is set a DRF in order to use the conical surface as secondary axis in order to control the location of the cylindrical hole respect to it. Do you think that what is set up is correct...
  3. filippoGDeT

    Locating Principle:Which one to prefer, Die Cast part

    Hello Guys, I need your help in order to clarify my doubts in term of Datum Setting. Supposing that I've a complex part ( maybe Die Casted or Injection Molded)....In order to set a valid datum reference frame which is the best choice among the following three options? - Use 2 holes as...
  4. filippoGDeT

    Two Holes as Datum Feature - Complex Die Cast Dimensioning strategy

    Dear All, I'm currently looking to the best tolerance strategy for a complex Diecast part as shown in the enclosed simplified 2D sketch Let me better specify some background on my thread. Supposing that I've a complex die casted part with 3 external holes on ear bracket that can be used by...
  5. filippoGDeT

    Indication of Datum Target position ISO vs ASME

    Dear all, I need to know if there are substantial differences on how datum target position must be indicated in the drawing comparing ISO and ASME standard. As far as I remember the position of a target datum point must be indicated with basic dimensions. Is that true also for ISO GPS standard...
  6. filippoGDeT

    2768-2 On drawing without ISO 8015 statement

    Dear All, hope you can help me to clarify the confusion about the introduction of ISO 8015:1989. Suppose that in my drawing title block there is not any statement regarding to this norm ( ISO 8015) and , as consequences, the use of independency principle introduced by this standard. Suppose...
  7. filippoGDeT

    Profile of a Surface - Sealing profile on sectioned view

    Dear All, I have another question regarding profile of a surface specification considering GD&T rule.Please refer to the attached picture to have a better understanding of my following explanation. In the picture you can see a simple cover with a sort of triangular sealing protusion. I need to...
  8. filippoGDeT

    Interference Fit case -Assembly stack up

    Hello Everybody, I have some difficulties to understand how consider Shaft and Holes on GD&T Assembly stack analisys (WCC)in case I'm doing radial stack vector and the two parts are coupled with interference fit. Which dimension should I Consider? Could you kindly provide some examples? Do you...
  9. filippoGDeT

    Profilr surface tolerance for not oriented slot

    Dear Guys, Hello to everbody who read my post. I need to understand if the use of profile tolerance fully define the shape and orientation of this slot as per attached picture. If not you think that I need to add basic dimensions? I'm in trouble to define basic dimensions to these datums as...

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