funny Arc Length dimension
funny Arc Length dimension
(OP)
I have a question about the Arc Length dimension in NX6 (6.0.2.8.). I'm attaching a pic that will show what I'm talking about. You'll see that the 10.420 dimension looks like one would expect when it's on the inside of the section, but when it's moved to the outside the witness lines change to a vertical position. It looks pretty silly and I'm wondering if that's the way it was designed to work. It doesn't make sense to me that it would change between the inside and outside of the geometry. It's not good drafting practice to put dimensions on the inside of geometry, but I'm going to have to do it in this case so the customer doesn't wonder what the heck I was doing.
Mike





RE: funny Arc Length dimension
Now I did see a couple of AutoCAD responses where they suggested writing AutoLISP programs to do what the user wanted, but I've also seen a Pro-E example (see below) virtually identical to what yours was showing, with what is called 'orthogonal' extensions for Arc Length dimensions placed outside the arc and 'radial' extensions for those placed inside the arc.
Either the entire CAD industry got it wrong, or we're all working from the same Drafting Standards (what a concept
John R. Baker, P.E.
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RE: funny Arc Length dimension
Now that I think about it, when I was using Pro-E we used to use an angle dimension and text edit it to the correct numbers because we didn't like the way the Arc Dimension looked and customers always questioned it. The only problem with that is it didn't update when you made changes to the model. I guess I'll have to do the same thing here.
Mike
RE: funny Arc Length dimension
RE: funny Arc Length dimension
I'm not trying to be argumentative here. I got the answer to my question. I still fail to see why the transition from Ideas to NX involves compromise in my end product though. I may be able to get around the non-updating dimension by using a measurement of the arc length, then assigning it to a parameter or expression, then referencing that in the dimension.
Mike
RE: funny Arc Length dimension
However the statement that was made .... "the transition from Ideas to NX involves compromise in my end product"..., holds no promise that the product was not compromised in the first place by being in I-deas. Which is simply to say that there is a difference between wanting things to be done in an acceptable way and just wanting them to be made to look the same as whatever some other system happens to support. The former is reasonable the latter leads some people to attempt work around methods that are just plain counter productive. In my opinion you're better to just bite the bullet and use any CAD system as it was intended to be used to the best of your ability.
Best Regards
Hudson
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Nil Desperandum illegitimi non carborundum
RE: funny Arc Length dimension
Like I said before, I don't want to belabor the point. I got an answer to my question. I'll come up with a way of making it look like I want.
Mike