topic Re: Adequately constraint & fully constraint in Inventor Forum

Adequately constraint & fully constraint

Anonymous — Sat, 14 May 2016 12:42:32 GMT

What is the different between the adequately constraint & fully constraint?

Re: Adequately constraint & fully constraint

CCarreiras — Sat, 14 May 2016 15:21:55 GMT

The question is.... what is a "adequately constrain"??

Where did you saw that?!!!

Re: Adequately constraint & fully constraint

Anonymous — Sat, 14 May 2016 16:22:46 GMT

This term was introduced by a video. It did not explain this word. I couldn’t trace which video it was. If I came across next time I will post the link.

Re: Adequately constraint & fully constraint

CCarreiras — Sat, 14 May 2016 17:34:03 GMT

hmmm... i see...

it's better to ask to the author.... because here no one will be abble to answer to that.

Re: Adequately constraint & fully constraint

rhasell — Sun, 15 May 2016 23:52:43 GMT

I would assume the following:

Part/Sketch Environment

The core shape of your sketch is fully constrained. (Everything that will be used to build/modify the solid.)

Any other "helper" geometry/lines do not need to be fully constrained.

EG: You created a tangent line on a curve to measure to the top of the arc because there was no other way to get a dimension to this point.

You don't need to dimension length of the line, there is no real need to.

Assembly constraint's.

EG: Does a bolt need to be "Fully Constrained" or will an Insert constraint suffice.

That is my take on it, and do this all the time.

Re: Adequately constraint & fully constraint

mdavis22569 — Mon, 16 May 2016 00:08:34 GMT

Also notice that the color of the circle has changed to blue. This indicates that the circle is adequately constrained. You’ll learn the difference between adequately constrained geometry and fully constrained geometry later in the course. For now notice that the lines are black, which means they are not adequately constrained.

http://www.trainingtutorial.com/SketchConstraints2016.htm

in his model ..he adequately constrainted the circles ...but didn't finish the other lines, so it wouldn't be fully till he did that ....

However ..when it's possible you should ALWAYS fully constrain your models .. that's my opinion

Re: Adequately constraint & fully constraint

mcgyvr — Mon, 16 May 2016 14:15:00 GMT

@Anonymous wrote:

What is the different between the adequately constraint & fully constraint?

Assuming you are talking about assembly constraints things like screws and bolts only need a single insert constraint to "adequately" constrain them.

Its really not necessary to add additional constraints to keep the screw from spinning around in the hole when manually moved..

If you are talking about in a sketch then the person that created the video is just wrong.. You should always fully constrain your sketches..

Simple Definition of adequate
: enough for some need or requirement
: good enough : of a quality that is good or acceptable : of a quality that is acceptable but not better than acceptable

Re: Adequately constraint & fully constraint

jalger — Mon, 16 May 2016 15:31:47 GMT

There are reasons to "Adequately Constrain" vs "Fully" Constraining a drawing.

Adaquately Constrain means that you still have flexiblity in the sketch ( like using a driven dimension, for an adaptive part).

It can also mean your lazy and don't want to constrain something thats not going to effect your Sketch (like a centerline for a revolve).

Essentially your not finishing the Sketch for one reason or another. (as the others have said its a good idea to Fully Constrain your Sketches if you do not intend it to be adaptive)

Fully Constraining the drawing means NOTHING moves there is NO Flexibity.

( although you could still have driven dimensions to pull out duplicate data like bolt hole circles, that also require a square pattern, but not really the point)

So its "impossible" (more like highly improbable) for the part to change on its own. ( I have seen contraint failures, normally from projected edges or faces changing, moving the end of part tool can destroy just as well as it can fix parts)

A fully contrained Sketch can't be adaptive, just as an Adapitive sketch can't be fully constrained.

So it depends solely on how you intend to use the sketch.

Hopefully that gets you going,

James

Re: Adequately constraint & fully constraint

JDMather — Mon, 16 May 2016 15:52:23 GMT

@jalger wrote:

...A fully contrained Sketch can't be adaptive, just as an Adapitive sketch can't be fully constrained....

Re: Adequately constraint & fully constraint

jalger — Mon, 16 May 2016 15:53:49 GMT

and a driven dimension was used!

Re: Adequately constraint & fully constraint

jalger — Mon, 16 May 2016 16:15:49 GMT

I suppose I should alter my statement slightly,

In most cases, the Original sketch can't be adaptive and fully. (as i originally intended the statement to reflect, adaptive parts vs non adaptive parts)

A Secondary sketch with projected geometry from the first can be fully constrained, and still be adaptable based on the first Sketch.

Really anything using a reference technically can be fully constrained and adaptive, so I concede that my original statement was wrong.

~~A fully contrained Sketch can't be adaptive, just as an Adapitive sketch can't be fully constrained~~

Regards,