Cannot redefine an angular dimension to have more than 6 decimal places

[gchampoux]

After changing an angular dimension to 8 decimal places, it reverted back to 6 places.
Message area says: "Value was rounded to 6 sig. digits (max. default tolerance)".
Specifically, these are pattern dimensions. (lead or increment)

We've tried tightening up the model accuracy, and implimenting config.pro settings default_ang_dec_places & default_dec_place.
But these have no affect.

Is there another (hidden) config option that controls this?

Gerry

WIldfire 3 M240

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[ptc-2607046]

Ok… I have to ask… why would you need to have an angular dim with that many decimal place precision?

[gchampoux]

mailto:-]

After changing an angular dimension to 8 decimal places, it reverted back to 6 places.
Message area says: "Value was rounded to 6 sig. digits (max. default tolerance)".
Specifically, these are pattern dimensions. (lead or increment)

We've tried tightening up the model accuracy, and implimenting config.pro settings default_ang_dec_places & default_dec_place.
But these have no affect.

Is there another (hidden) config option that controls this?

Gerry

WIldfire 3 M240

[ptc-593619]

Any machine shops out there that can hold an 8 place angular decimal, if
so, get in touch.



Richard A. Black

Lead Design Engineer

Eaton Corporation

440 Murray Hill Road

Southern Pines

NC 28387 USA

[dgschaefer]

Try creating a relation driving the angle to the 8 place number. I
believe that will assign the value appropriately, even though it
displays to 6 places.



Doug Schaefer

[iceblink1]

Are you sure it is due to the round-off?

Physically the 8th digit is pure nonsense. A difference of 1E-8 radians
makes for a length difference of only a few nanometers at 1 meter
distance. No manufacturer will be able to make anything with this
accuracy. And I can hardly imagine your model accuracy is small enough
that the roundoff would make a difference.

Patrick


On Wed, 14 Sep 2011 05:26:07 -0700 (MST), Gerry Champoux wrote:
> It involves a large, precise pattern.
> The pattern members are failing because of the round-off.
>
> In Reply to Nick Ely:
>
>> Ok… I have to ask… why would you need to have an angular dim
>> with that many decimal place precision?
>>
>> From: Gerry Champoux [
>> default tolerance)".
>> Specifically, these are pattern dimensions. (lead or increment)
>>
>> We've tried tightening up the model accuracy, and implimenting
>> config.pro settings default_ang_dec_places & default_dec_place.
>> But these have no affect.
>>
>> Is there another (hidden) config option that ...

[davehaigh]

It might be better write some relations to xy dimensions to give you the location you want.

In my experience, a lot of times it's better to give xy dimensions than angular dimension especially if the distances are large.

David Haigh