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what is second linear object for chamfer dimension-NX5?
2

what is second linear object for chamfer dimension-NX5?

what is second linear object for chamfer dimension-NX5?

(OP)
I have a chamfer that I am trying to dimension and when I click on the line the prompt asks for a second linear object for chamfer dimension. I try clicking on other lines but am unable. What do I need to do to get this second linear object to click on?

RE: what is second linear object for chamfer dimension-NX5?

The second linear object is the line (usually horizontal) that the angle of the chamfer is measured from.
If the chamfer feature is used on the model then you won't be asked for that second linear object when that chamfer is dimensioned on the drawing.
Instead of including chamfers in the sketch I usually use the chamfer feature. The same goes true for blends on a model - it is best to use the blend feature.

RE: what is second linear object for chamfer dimension-NX5?

(OP)
right, that is exactly what I did. I added the chamfer in modeling. And now I am in drafting mode trying to dimension the chamfer. as you can see in the screenshot, the edge is coming up as part of the chamfer (chamfer 19 or something like that). I am unable to click on the top horizontal line for some reason...

RE: what is second linear object for chamfer dimension-NX5?

oh yea, one more thing. You may be able to pick the curves better by: pick the view > view style > general (tab) > change the extracted edges from none to associative

I hope that works.
 

RE: what is second linear object for chamfer dimension-NX5?

(OP)
huh, tried that, still asking for the second linear object. still unable to click on anything.

RE: what is second linear object for chamfer dimension-NX5?

I believe the corner you're chamfering needs to be 90 degrees for this dimension type to work.

RE: what is second linear object for chamfer dimension-NX5?

(OP)
I think you're right. I just tried recreating that same scenario with just a plain block and as soon as I angled one of the edges the same prompt came up. I wonder why though? It's still a chamfer, right? There is still a straight edge for it to reference off of.

RE: what is second linear object for chamfer dimension-NX5?

u r right yurashichka.
I created a triangle, extruded it, gave chamfer to one of the edge (edge parallel to extruded direction), found that I can't give Chamfer dimension!! :(((

RE: what is second linear object for chamfer dimension-NX5?

yurashichka,

First, please state what type of Chamfer feature you're using.  There are a few different types of Chamfer features, aren't there (Single Offset, Offset/Angle, Freeform)

Also, there are different settings for the Chamfer dimension...one way will just display the offset value without an angle and another way will display both the offset and the angle values...and there might be yet another display option available.  What options are you using?

The reason I ask is because of that angled surface....if you're using an Offset/Angle Chamfer feature, then the angle needs to be calculated WITH the draft of the "vertical" angled surface in mind or else you'll overshoot the chamfer angle.  For example, if that is a 5° angle on the lower "vertical" surface, and you apply a Chamfer with an offset of 20 and an angle of 45°, then the measurement for the angle will end up being 50° when measured from a straight vertical line rather than the 45° that you input for that value.  The correct input for the surface to result in 45° from vertical is actually 40° due to that 5° angle being included.

Took me a few years to catch onto that.  Once I did, I quit using the Chamfer feature and just controlled it in Sketches.  Maybe not the way I'm "supposed" to do it, but I found it much more reliable than the feature (for what I needed at the time).

Try using the Chamfer dimension WITHOUT a Chamfer feature (include it in your Sketch)....you might be surprised....and I reserve the right for a disclaimer if it doesn't work out right either! ;)

Tim Flater
Senior Designer
Enkei America, Inc.
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.

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