[Da...] Posted February 13 Share Posted February 13 (edited) I need reassurance that I am understanding what all of this means, and advice on how to correctly set it up in the program. I know how to do a position callout for a hole, but I haven't seen something like this before. First off, how do I make the keyway feature? I made 2D lines on each side of the keyway and created a symmetry line for the center of the keyway. But I don't feel like that is correct. I feel like it needs to be all sides of the keyway as one feature, but I don't know how to do that. I only have Calypso...no add-ons like freeform or curve. Top Line - I believe this means the position of the keyway needs to be within .15 to Datum -C-, which is the shaft. But I am not sure using the symmetry line is correct. Middle Line - Keyway must be parallel to the shaft within .05. Is there any difference with it being part of the position FCF rather than a separate one? And again, I don't feel like a symmetry line is correct. Bottom Line - Since Datum D is the top hole, I believe this is just saying that the keyway does not need to be clocked to the holes. Is that correct? Edited February 13 Link to comment Share on other sites More sharing options...
[Ma...] Posted February 13 Share Posted February 13 You can use symmetry plane - this will give you mid plane with width. For that third - i think that YES - no need to be clocked for datum D ( but why to bother if there is no use 😄 ) I'm always forgeting those mods ( like this (S) ) - we are not using them so they are forgoten pretty fast 😄 Link to comment Share on other sites More sharing options...
[Da...] Posted February 14 Share Posted February 14 .015 from center of the C-datum flange diameter to the centerline of the keyway (i.e., "centered on the datum"), with in .005 straightness to the cylindrical centerline, if datumD is the top cylinder (either external or internal..). I think......too many things are missing for me to be certain... Link to comment Share on other sites More sharing options...
[To...] Posted February 14 Share Posted February 14 (edited) Please sign in to view this quote. Position of the slot within 0.15 to C which is the diameter the slot is machined into, not the flange diameter. Parallel to C with 0.05. And, orientation to D is not required. This appears to be an ISO version but I assume the S means regardless of feature size. Edited February 14 Link to comment Share on other sites More sharing options...
[Pa...] Posted February 20 Share Posted February 20 Looks like a new engineer was guessing at GD&T after asking a machinist. I agree with these guys. In the absence of clear direction on your drawing, .015TP to C and parallel to C. Assuming a half-baked reference to ASME Y14.5 1994 in the end there, yes, I'd say this means Regardless of Feature Size for both FOS and datum. Why it's all bundled up like a composite TP is anybody's guess. Link to comment Share on other sites More sharing options...
[Da...] Posted February 20 Share Posted February 20 Please sign in to view this quote. Yes, this is a "legacy" callout. I don't believe it was ever "official" IAW ASME Y14.5, though. Probably just another informational addition from the 'Department of Redundancy Department'..... Link to comment Share on other sites More sharing options...
[To...] Posted February 20 Share Posted February 20 Please sign in to view this quote. Hi Darci, can you identify if this is ASME or ISO, or other? Date of drawing? Link to comment Share on other sites More sharing options...
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