A typical reaction to GD & T in Canadian industries in the province of Ontario: 1. Too much time is consumed to draft. They love to work by the nominal dimension and a general tolerance of +/-0.005 (0.127mm) .....and the features (holes and mating parts have no connection to the gen. tolerance during planning the clearances. And if one wants the part to be "super" accurate then one must increase the nominal dimension after the decimal to 4 or 5 places!! But the gen. tol. is again +/-0.005!! 2. When the tolerance units exceed 4 to 5 places after the decimal in GD & T flag...everyone flips. Engineers, machinist and inspection. They cannot think beyond 0.005" 3. They love to think and talk in fractions and expect everyone to understand. Well, we all understand fractions but very difficult to visualize the distance when your're from the metric world. 4. GD & T will bring up the cost of manufacturing...as per many. The GD & T flags are intimidating per many and give them a vertigo. 5. The machinist said: The machine will give the accuracy it can. We cannot ask for more accuracy... It is very frustrating to work with unskilled and arrogant engineering personnel.
@firstname1908
Жыл бұрын
based on the 1942 GD&T standard
@stonkpuppets6393
12 жыл бұрын
A bit advanced for my current level, but I learned a lot. TY
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