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  • Users: ewh
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  1. ewh

    Cylindrical feature, datum symbol placement, in line vs not in line with dimension arrow

    3DD - I'm only agreeing with what the standard says, not defending it.
  2. ewh

    Cylindrical feature, datum symbol placement, in line vs not in line with dimension arrow

    Burunduk's explanation is how I have understood it since my intro to Y14.5.
  3. ewh

    Profile tolerance unless otherwise specified - WRT Datums vs no datums

    The tolerance would be listed in a default profile FCF.
  4. ewh

    Standard for identifying features on Engineering Drawings?

    Y14.41 pertains to product definition (titled Digital Product Definition Data Practices), not the methods used to produce it. What is required, not how to get there.
  5. ewh

    Standard for identifying features on Engineering Drawings?

    You're dealing with manufacturing drawings rather than product definition drawings (Y14.x), and the only such standards I have seen are company specific.
  6. ewh

    What type of mechanism does this amusement ride use?

    hydraulic
  7. ewh

    Can I omit Basic dimensions?

    In MBD there is often a default profile tolerance applied to un-dimensioned features, simplifying the model by only dimensioning items that have a non-default tolerance. These datums/features do need to be defined with basic dimensions (or a note as mentioned above) and applicable FCFs. This...
  8. ewh

    Profile tolerance unless otherwise specified - WRT Datums vs no datums

    The model is considered basic. This should be part of the default profile tolerance note along with ALL AROUND after the profile FCF .
  9. ewh

    Y14.5 Drafting

    Style is another matter. Since there is no dedicated checker here currently, I'd be happy just to get the standards followed a little more closely. They enforce a basic style of their own.
  10. ewh

    Y14.5 Drafting

    Thanks for digging that up, greenimi! That's more like what they need.
  11. ewh

    Y14.5 Drafting

    The software (NX) requires a parent view to create a section view, and that view orientation is based on its placement on the drawing. It's not difficult to place a section view in the orientation you want then move it.
  12. ewh

    Y14.5 Drafting

    Formats are fixed and not a problem. Thankfully we don't have to deal with pen widths anymore. I think they relocate the section views after creation - the current software wouldn't allow their creation otherwise (but these were created in a different software and translated over a decade ago)...
  13. ewh

    Y14.5 Drafting

    I've seen older ones here where the section views are first angle on third angle drawings
  14. ewh

    Y14.5 Drafting

    Thanks, This has been basically a "free-range" group, where engineering documentation such as drawings only had to meet the minimum for manufacturing and purchasing to make or procure the parts necessary to complete the finished good. It is maturing and is now to a point where the drawings will...
  15. ewh

    Y14.5 Drafting

    Y14.5 lays out some basic drafting guidelines that are usually ignored (even by the standard itself) and somehow don't get the same attention as the GD&T aspect of the standard (understandable since the standards title is Dimensioning and Tolerancing, not Drafting). Drawings here are mostly...
  16. ewh

    overall straightness and individual straightness of axis of cylinders

    nope
  17. ewh

    Slotted Counterbore

    Remove the diameter references. There is no full diameter and that is not what is being dimensioned, the width is. This is why the standard shows the R callout separately.
  18. ewh

    Interpretation of General Profile Tolerance Note

    Yes, the FCF would apply all-over, and unless the parts are full MBD the designer probably didn't intend that. My remark was more to clarify that you can use a FCF with no datums referenced. As for the OPs problem, I agree it is ultimately QAs responsibility to raise the issue before parts are made.
  19. ewh

    Interpretation of General Profile Tolerance Note

    The default note should not have datums in the FCF unless those datums are identified. If they are not identified, the model would should be considered basic (should state such in same note as default FCF) and the profile would be controlled to the basic model.
  20. ewh

    Drawing view multibody management.............

    Using layers is also a good segregation method "Know the rules well, so you can break them effectively." -Dalai Lama XIV

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