Sketch Drafting Formula Question

[BrittToolEngineer]

Greetings:

I am trying to learn how to make a dimension a function (or percentage) of another dimension. I've never dealt with formulas in NX yet, and want to take my game to higher level. I've attached a basic picture to help. We have an overall 11.50", and there are bolts located at 3.75 from one edge. I'd like this dimension to change if the 11.50" dimension changes. Say .35 * 11.5, but not sure how to write in there.

Can someone help me with this?

Thanks in advance.

Brent

 

[cowski]

p1811 is the name of the dimension that drives the 11.5 dimension. In the dimension that you want to be variable (let's say p918), edit the value to read "p1811 * .35" (no quotes).

www.nxjournaling.com

 

[BrittToolEngineer]

Got it. Thank you Cowski.

 

[BrittToolEngineer]

Cowski - another question. The sketch is on a body. We need to locate the two sets of middle bolts relative to the length of the body. Basically, this is a box that will change as parts that we pack in these change, and what I'm trying to do is set up a sketch that can quickly be modified to fit the new size part and everything else adjusts automatically

Is there an option within the formula to make a dimension relative to the length of the body that my sketch is on?

Thanks,

Brent

 

[cowski]

It depends on how the model was built. Is there a single sketch or expression that drives the overall length? If so, you can reference that expression. If not, you can create an associative measurement and reference that instead (the measurement will need to be created before the sketch that references it).

www.nxjournaling.com

 

[BrittToolEngineer]

Cowski - I used the associative measurement. Love it. It worked exactly how I need it to work. Thank you for helping.

Brent