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Inoram14-Alexandrite
14-Alexandrite
October 19, 2017
Question

large radius contraint

  • October 19, 2017
  • 24 replies
  • 7003 views

Any idea why I can not constrain the large radius to the point in the center a the 0.005"?

file is creo 2 m250

thanks!

 

 

 

lrad.JPG

24 replies

D
dschenken1-Visitor
1-Visitor
October 19, 2017

Typically a failure of this type is a lack of available precision. You can try to change the range by setting the accuracy to absolute (if that still applies to the creo version) and use a value like .002.

You might also just use larger values in the sketch and edit them afterwards. If it's an accuracy problem the feature will fail to regenerate and you can try other values to sneak up and chose a useable accuracy value until you get what you like.

T
TomD.inPDX17-Peridot
17-Peridot
October 19, 2017

Like David said, small dimensions in a large part require tighter accuracy controls.

 

My early re-introduction of Creo was to make silkscreened panels.

The extrusion of the silkscreen art was only .002" on a 19" panel.

Wouldn't do it until I made precision tighter.

 

By default, I now change these types of features using absolute accuracy at .00005".

You have to initiate allowance of absolute accuracy.

I
Inoram14-AlexandriteAuthor
14-Alexandrite
October 19, 2017

I use abs acc of 0.0001" generally, but even 0.00003" doesn't change this. It seems to be something else.

 

B
BenLoosli23-Emerald III
23-Emerald III
October 19, 2017

Try going the other direction with the accuracy value, like .002 or .005.

M
MartinHanak24-Ruby III
24-Ruby III
October 21, 2017

Hi,

 

did you ask PTC Support ?

I
Inoram14-AlexandriteAuthor
14-Alexandrite
October 24, 2017
@MartinHanak wrote:

Hi,

 

did you ask PTC Support ?

No. I would if I thought they could be helpful.

M
MartinHanak24-Ruby III
24-Ruby III
October 21, 2017

Hi,

 

please publish detailed information related to your sketch. I can see 3 lines and 1 arc on your picture. What are dimensions of these entities ?

I
Inoram14-AlexandriteAuthor
14-Alexandrite
October 24, 2017
@MartinHanak wrote:

Hi,

 

please publish detailed information related to your sketch. I can see 3 lines and 1 arc on your picture. What are dimensions of these entities ?

I guess the only other dmiension that actually important is the whole thing is 3" wide. So it's just a really big radius in a really short distance(which appears to be the main issue anyway). I also attached the model (in the original post). But I think anything similar will do the same thing.

 

M
MartinHanak24-Ruby III
24-Ruby III
October 24, 2017

Hi,

 

see attached model.

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