cedarbluffranch
Mechanical
- Jul 17, 2008
- 131
Hi all,
I'm really struggling with a quandry at work, and am hoping that you can share some information with me so I can make a better engineering decision. Basically, I've joined a new group where the senior engineers like to dimension everything using coordinate dimensions rather than geometric dimensions (GD&T or Y14.5). I'm a younger engineer who came from a firm that extensively used Y14.5, so I believe it's the only way to do aerospace drawings.
Here's my questions:
- Is the use of Y14.5 (or european equivalent) growing or shrinking? Some of the engineers talk about how it was the fad of the '90s, sort of like 6S or Just-in-time.
- The machine shop can't read GD&T very effectively, so everything with GD&T costs three times as much. (Classic example: They look at the number of decimals places in a basic dimension to determine cost and tolerance.) Any good suggestions on how to work with them on it?
- Should I be very concerned in the first place about coordinate dimensions? After all, they pay me, and if they want me to do coordinate drawings, I suppose that is what I should do. But I'm skilled at GD&T, and it's just really hard to be ok with coordinate geometry.
Thanks!
I'm really struggling with a quandry at work, and am hoping that you can share some information with me so I can make a better engineering decision. Basically, I've joined a new group where the senior engineers like to dimension everything using coordinate dimensions rather than geometric dimensions (GD&T or Y14.5). I'm a younger engineer who came from a firm that extensively used Y14.5, so I believe it's the only way to do aerospace drawings.
Here's my questions:
- Is the use of Y14.5 (or european equivalent) growing or shrinking? Some of the engineers talk about how it was the fad of the '90s, sort of like 6S or Just-in-time.
- The machine shop can't read GD&T very effectively, so everything with GD&T costs three times as much. (Classic example: They look at the number of decimals places in a basic dimension to determine cost and tolerance.) Any good suggestions on how to work with them on it?
- Should I be very concerned in the first place about coordinate dimensions? After all, they pay me, and if they want me to do coordinate drawings, I suppose that is what I should do. But I'm skilled at GD&T, and it's just really hard to be ok with coordinate geometry.
Thanks!