Rayleigh_Scattering
Regular
- Location
- Under the arch
I teach a course for Engineering Technologists which includes GD&T, and I'm struggling to find good drawing to use as an example.
The manuals and textbooks we have are full of "sample" drawings meant to illustrate how to properly express datums and tolerancing, but they are detached from the systems they are meant to work with. Or (we suspect) they are completely fake.
I teach the course with a heavy emphasis on using real parts in real applications so that the students can appreciate why some features are used as datums while others are left with loose traditional "unless otherwise specified..." tolerances. Or why this surfface has to be flat and perpendicular while that surface doesn't.
That doesn't work with detached or artificial drawings. But you should have been there when they tried to figure out how to datum a lug nut.
I have plentiful access to car parts from the local scrap yards, but I don't have actual manufacturing drawings for any of those parts.
I can find a few drawings for classic car parts online (and even a complete drawing set for a 1930's soviet motorcycle engine) but they don't use GD&T and I can't get enough hardware to use for a class.
Ideal would be a drawing set for something like a 1990's transfer case, differential, diesel injector pump, or simple engine. I'm thinking that will be new enough to use GD&T but not so new that it unloads much content into an electronic PDM system, and that it'll be something that I can get a physical copy of from <not sponsor scrapyard>.
This place has users with "...a variety of specialized skillsets...". Does anyone either have, or have a contact who has access to any .pdf drawing sets for some kind of complex-ish common-ish mechanical system from the 1980-2000 timeframe?
Even if you know who I'd talk to at Magna Industries (who, as far as I can tell, inherited the New Process line of transfer cases) to find out how to get an educational license for a TDP, that would help.
The manuals and textbooks we have are full of "sample" drawings meant to illustrate how to properly express datums and tolerancing, but they are detached from the systems they are meant to work with. Or (we suspect) they are completely fake.
I teach the course with a heavy emphasis on using real parts in real applications so that the students can appreciate why some features are used as datums while others are left with loose traditional "unless otherwise specified..." tolerances. Or why this surfface has to be flat and perpendicular while that surface doesn't.
That doesn't work with detached or artificial drawings. But you should have been there when they tried to figure out how to datum a lug nut.
I have plentiful access to car parts from the local scrap yards, but I don't have actual manufacturing drawings for any of those parts.
I can find a few drawings for classic car parts online (and even a complete drawing set for a 1930's soviet motorcycle engine) but they don't use GD&T and I can't get enough hardware to use for a class.
Ideal would be a drawing set for something like a 1990's transfer case, differential, diesel injector pump, or simple engine. I'm thinking that will be new enough to use GD&T but not so new that it unloads much content into an electronic PDM system, and that it'll be something that I can get a physical copy of from <not sponsor scrapyard>.
This place has users with "...a variety of specialized skillsets...". Does anyone either have, or have a contact who has access to any .pdf drawing sets for some kind of complex-ish common-ish mechanical system from the 1980-2000 timeframe?
Even if you know who I'd talk to at Magna Industries (who, as far as I can tell, inherited the New Process line of transfer cases) to find out how to get an educational license for a TDP, that would help.