Does the part meet drawing requirements ?
Does the part meet drawing requirements ?
(OP)
Please ref to the drawing attached :
Do you think the part was properly defined on the DRF ? Does the part ( Fig.A and Fig.B ) meet the drawing requirements ?
Thanks for your valuable inputs
SeasonLee
Do you think the part was properly defined on the DRF ? Does the part ( Fig.A and Fig.B ) meet the drawing requirements ?
Thanks for your valuable inputs
SeasonLee





RE: Does the part meet drawing requirements ?
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: Does the part meet drawing requirements ?
I believe profile of surface attached to the tab contour would work here. If it has reference to datums A, B and C profile tolerance zone will be clearly defined and only one configuration of part geometry will be acceptable.
RE: Does the part meet drawing requirements ?
However, that said, I'm not sure the tab is located linearly from the centerline since I don't think the 3.38 can be basic if no GD&T is used on the tab. Per ASME Y14.5M2.7.3 a separate control is required.
So while the rotation to the 2 holes is probably controlled by the implied 90 assuming there is a tolerance block, it's centering between the 2 holes/perpendicularity to the OD is not controlled.
In fact, I don't think the OD location is toleranced to the 2 holes either so they could be well off from each other.
I've tried to show a combination of this in the linked image.
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What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Does the part meet drawing requirements ?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Does the part meet drawing requirements ?
You don't show the tolerances, but do the dims 14.26, 7.50, and the floating R3.00 work out with the 15.00 dia dim?
Chris
SolidWorks 10 SP4.0
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SolidWorks Legion
RE: Does the part meet drawing requirements ?
Powerhound, GDTP T-0419
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RE: Does the part meet drawing requirements ?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Does the part meet drawing requirements ?
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: Does the part meet drawing requirements ?
It's a cylinder cam used on door lock, the right hand cam used on RH door and left hand cam used on LH door. When I review the drawing, I did think the part was not properly designed since the most important tab contour was not perfectly defined, that's why I think the produced part could looks like Fig. or Fig B.
Yes, there is a general title block tolerance on the drawing, but I am with Peter and pmarc, the profile callout added and the relative dimensions change to basic could be the right way.pls take a look at the revised drawing.
Season Lee
RE: Does the part meet drawing requirements ?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Does the part meet drawing requirements ?
Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net
RE: Does the part meet drawing requirements ?
This is almost exactly how I imagined profile of surface usage for this part. I think now there is no place for any misinterpretations and discussions if part can be in that configuration or in the other. There is only one possibility.
Of course we could discuss if countersinks should be somehow positionally toleranced relative to the holes, but that's not the point in this case.
RE: Does the part meet drawing requirements ?
Can you easily post .jpg images as opposed to .tif images? My new windoze installation can't find a tif image viewer, and I'm too lazy to go reload the freeware viewer I'd had on the last hard drive...
RE: Does the part meet drawing requirements ?
Yes, both sides with Cisink, there is R or L stamping on the part for easy identification on the assembly.
Thanks for the sketch, the profile callout is what I prefered and I believe its the right way to defined the tab contour.
SeasonLee
RE: Does the part meet drawing requirements ?
"Of course we could discuss if countersinks should be somehow positionally toleranced relative to the holes, but that's not the point in this case." why would be discuss that when ASME y14.5 covers it well enough for all but the biggest pedants.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Does the part meet drawing requirements ?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Does the part meet drawing requirements ?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Does the part meet drawing requirements ?
RE: Does the part meet drawing requirements ?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?