Goal R.002 *Pulls hair out!* 5

[ModulusCT]

OK, so I was told to do the following by my supervisor today. I really hate having to tell him that he has no idea what he's doing and that he doesn't know the applicable drafting standard, so I thought that it would be better to simply offer a solution that does jive with the spec.

He wants to indicate R.002 +.003/-.000, but with an emphasis on trying to produce the radius at .002 rather than taking the total permissible error and shooting for the middle. His solution to this problem is to say .005 MAX; GOAL R.002, but I hate this personally because the word GOAL is not mentioned in the spec as an acceptable descriptor for tolerancing a part. In fact, I'm pretty sure there are parts of the spec that say not to do things like this.

Any suggestions? Is there a way that you can say, what my boss wants the drawing to say by using acceptable symbology and terminology?

 

[ewh]

Nope... work in Houston, home in San Antonio. Which part of the republic are you in?

Technically, the glass is always full.

 

[powerhound]

Austin area. Work in Cedar Park, live in Round Rock.

Powerhound, GDTP T-0419
Engineering Technician
Inventor 2010
Mastercam X5
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II

 

[ewh]

Nice... want to trade? SXSW is coming up!

Technically, the glass is always full.

 

[jctoce]

ewh: Was going to make the trip to SXSW this year but couldn't find the time unfortunately!

ModulusCT: Genex Turbine. Right off of 91, same plaza The Wood Group is in. I am very familiar with Simsbury too, just moved out of Barkhamsted. Couldn't find a way to PM and it's been all too long since I have hijacked a thread Is there a way to PM?

 

[KENAT]

No.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[ewh]

I think it's already been hijacked - sorry about that.

It might not be SXSW yet, but I did score Radiohead tickets for next week!

Technically, the glass is always full.

 

[ewh]

...also, welcome to the forum, jctoce!

Technically, the glass is always full.

 

[fsincox]

"If you really want a difference then ask Don Day about his proposed "delta modifier"..."

Can anyone elaborate on this?
Frank

Nice quote trick.

 

[slipstream44]

ModulusCT: Presumably your supervisor is not the designer. I have to wonder if the designer is more concerned about maintaining the .010 wall thickness. The point is that the designer must be included in the discussion. What's so important about that radius as opposed to the referenced .012 radius? This part looks almost like it started out in life as a punched piece of .010 sheet stock, but the numbers don't quite add up.

 

[ModulusCT]

slipstream44: He's not the designer. I am! He tends to micromanage all of our stuff though. To answer your question, there is absolutely no good reason why the .005 MAX radius is important. The .012 radii is reference because with constant wall thickness of .01, it's already given. This is an older drawing done by someone else that I'm not modifying and in the process trying to bring up to some kind of realistic standard.

It's a mess. I'm pushing it through the way I want it... and we'll see what happens next.

I'm not a vegetarian because I dislike meat... I'm a vegetarian because I HATE plants!!