LARGE diameter dimension on a very small detail view... 1

[Jaydenn]

Hi All,
Maybe this is an easy one, but I can't find any examples of it anywhere. However... It is a fairly common thing on any drawing.

Lets say you really big tube that has a wee small groove in it.
So, you create a detail view in order to clearly dimension the groove.
My question is;
How will you go about adding the groove diameter dimension on the detail view when only "one side" of the diameter is in view?

Does that make sense?

JAY

 

[cowski]

Will a 'folded radius' dimension work for your case? Look it up in the drafting help files for a picture and more information.

 

[Jaydenn]

Cowski,
Thanks, but a folded rad will not work in this case.

Think "side view" diameter...I will try to add a picture shortly.

JAY

 

[Jaydenn]

Hopefully this pic will make it more clear.

JAY

 

[ewh]

This thread may give you some assistance.
Use a cylindrical dimension.
Turn off one extension line (the one connected to the centerline) and change the arrowheads on that side to "double".

When the people fear their government, there is tyranny; when the government fears the people, there is liberty. - [small]Thomas Jefferson [/small]

 

[Xwheelguy]

I've ran into this a few times when detailing wheels. What I did was edit the view boundary so that I could at least see the centerline area. Next I'd do whatever I had to do in order to put a Centerline Utility Symbol in the view....this might involve drawing the backgound edge curves from corner to corner across the diameter. Next, I would pick a Cylindrical dimension, turn off one side for dimension arrows and extension lines, then dimension from the centerline to the edge shown in the detail view. Finally, I would edit the view boundary back to its original shape.

Not the best method, but it works.

Tim Flater
Senior Designer
Enkei America, Inc.

http://www.enkei.com

Some people are like slinkies....they don't really have a purpose, but they still bring a smile to your face when you push them down the stairs.

 

[Jaydenn]

Nkwheelguy,
I had a sneaking suspision that was the way to go, but i really hoped that there was a more elegant way to achieve this!

Anyhoo, what I am going to do is;
1. make a detail view that envelopes the ENTIRE part.
2. add the troublesome dimensions.
3. "re-size" the detail view to the appropriate size
4. edit the dimension settings to remove the leader from one side of the dim.

This certainly works, albeit a bit cumbersome.

If there are any other suggestions, keep em' coming!

Thanks,
JAY

 

[hudson888]

I may be slightly dense here but I'll ask anyway. What is wrong with a radius dimension? I think it would be much easier. It may not be what your heart was set on but it seems like it would make sense to me.

Cheers

Hudson

 

[MCGNX]

two other methods that may work for you. In NX you can dim from view to view while retaining associativity to the feature (that is, the dimension will be true), so you can dim from your detail view to the other side of the diameter in the view the detail view came from. Then edit the lines as above.

Sometimes however that is not acceptable as the dimension lines are just too large across your drawing, in this case what I do is do the same as above, except I make either a copy of my view (that the detail is coming from) or create another detail view of the other side that I call a "dummy" view. Then dimension between the detail view and the "dummy" view and move the "dummy" view to adjust the spacing of the dimension. After that, change your view border of your "dummy" view so that the geometry is not visible, then edit your dim lines as above.

 

[Jaydenn]

hudson888,

No matter what type, or style of dimension I use, the difficulty is still present. The "other half" of the dimension is missing, thus there is nothing there for you to click on to create a dim. Know what I mean?

I'll put up another pic.
This pic highlights what I was trying to accomplish. Dimensions that have only ONE side of them available for clicking!

 

[ewh]

Here;s the link that I forgot to add. Check it out and see if it helps.
thread561-215665

When the people fear their government, there is tyranny; when the government fears the people, there is liberty. - [small]Thomas Jefferson [/small]

 

[man2007]

Jaydenn,

I really did not understand what you mean by "Dimensions that have only ONE side of them available for clicking!"
Why do you need otherside?

 

[Dave K]

how about using the 'baseline' option, in the Cylindrical Dimension menu? You'll have to setup your baseline axis, but once that's done, you can use it over and over.

A previous employer, had a baseline setup in their 'seed part' file, on the jet engines centerline. That way it was always there, if you needed it, for a cylindrical dimension.

-Dave
Everything should be designed as simple as possible, but not simpler.

 

[mmauldin]

Have you tried a Broken View of a Section View?

See attached.

 

[hudson888]

I got your second image and now I see what you're aiming at. I think you could manage it using ordinate dimensions if you're willing to go to the trouble of doing so.

The length dimension 441.25 is not what I would call best drafting practice since unlike the diameter the assumed reference point for the other end of the dimension is not very clear. I wonder if that is why NX does not offer mainsteam support for this sort of technique.

Frankly the diameter dimension may be a good case for an enhancement as I can't see a good reason why you shouldn't be able to do that, and I don't know of an existing method that does it with great ease.

Cheers,

Hudson

 

[pmgCAD]

baseline cylindrical dim using marginX.... old skool.

 

[bfleck]

In ProE, this is a benefit of using the show/erase dimensions because you would show the dimension in the normal view, then move it to the detailed view. The dimension line would not extend to the natural feature edge or point and provide double arrows on the leader line. The user also had the ability to change the length of the leader line with drag handles.

 

[Xwheelguy]

I like the idea of dragging dimension "parts" onscreen to size and/or locate.

Tim Flater
Senior Designer
Enkei America, Inc.

http://www.enkei.com

Some people are like slinkies....they don't really have a purpose, but they still bring a smile to your face when you push them down the stairs.

 

[DavidTolsma]

Pick the other side of the cylinder from the other view. I think that still works. Then hide the other extensions.

-Dave Tolsma
Tolsnet LLC

http://groups.google.com/group/NX_CAX/

http://groups.google.com/group/plm-exchange/

 

[hudson888]

What David says above may also be affected by whether you set your dimension arrow preferences to inside or outside.

Regards

Hudson