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axis pattern

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axis pattern

Hi,

i am using the pattern tool, using axis to definate it. I would like to know if there is a way to make an axis pattern with two axis : i need a 17.39° x-rotation and a 51.13° y-rotation.

 

I thought in doing firstly the x rotation pattern and use the result to do de y rotation pattern. But i will have to delete de semi acabate pattern which will delete the second one as it is son o the first one. Am i understandable ?

 

Thank you,

Léo

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1 ACCEPTED SOLUTION

Accepted Solutions

Re: axis pattern

Essentially, the feature "BAR" is made by extruding a sketch made on the plane "XY_ROTATED".

The "XY_ROTATED" plane is defined as going through axis "X" and at an angle to plane "XY".

For your 2nd pattern instance, this angle will be 17degrees.

The plane "YZ_ROTATED" is defined by going through axis "Y" and at an angle to plane "YZ"

The angle of "YZ_ROTATED" plane is the other control angle - in your case 51degrees.

To be able to orient the sketch, I made plane "NEW_YZ" - defined as going through the axis "NEW_Z" and perpendicular to plane "XY_ROTATED".

The axis "NEW_Z" is the intersection of planes "XY_ROTATED" and "YZ_ROTATED".

Notice that if the "XY_ROTATED" plane is at 0 angle, then "NEW_YZ" is coincident with the plane "YZ_ROTATED".

Can you open the file I attached?  Then "edit" the two planes to see it in action:

axis_pattern_feat_editing.png

12 REPLIES 12

Re: axis pattern

If you have a dimension within the feature for rotation about one of the axes, then, create an axis pattern about the other axis.  Within the axis pattern you can click on the dimension tab, click within direction one, select the dimension for rotation about the other axis and type in the increment.

2_axis.jpg

Re: axis pattern

i tried as you told me dut i have not beem succesful... Could you detail more step by step your explanation ?

In order to better explain my problem my piece is this one 1.png

And i need both rotations : 2.png3.png

Re: axis pattern

I'm sorry, I can't understand at all.

Can you sketch a picture?

This is what I guessed you are after:

angle_pattern.png

each spike is incrementally re-oriented by simultaneous 17.39° x-rotation and 51.13° y-rotation (about the default coordinate system)

(creo 3.0 example attached)

Re: axis pattern

The previous pattern behaves funny after about 180 degree mark.  This one is better:

angle_pattern2.png

Re: axis pattern

This is not exactly what i'm searching for.

Look, i did the piece like i want it :

tot.png

But i did it "manually", i would like to know how to create the second element with the pattern tool. The first element is that one i showed you in my second message.
The second element is like the first one but with a x-rotation and a y-rotation.

thank you for your disponibility,

Léo

Re: axis pattern

Attached is an example.  I setup the sketch plane within the extrude with an angular dimension that could be used within the axis pattern (it starts as 0 degrees).

Re: axis pattern

I see.  You want the rotation to be about the "global" y axis (green) and then about the "global" x axis (red):

axis_pattern_3.png

One method is by modeling your geometry such that it is controlled by these two angles.  Then during pattern definition, you select "dimension" pattern and then you select both of these dimensions (with the CTRL key) to collect them into the pattern increment definition:

axis_pattern_3_explained.png

I don't know off the top of my head how to do this with just the "axis" type of pattern.

You can examine the attached file for more clarification.

Re: axis pattern

Paul Sobejko‌ That's look great ! Can you explain me better how you do the part "modeling your geometry such that it is controlled by these two angles" ?

Re: axis pattern

Essentially, the feature "BAR" is made by extruding a sketch made on the plane "XY_ROTATED".

The "XY_ROTATED" plane is defined as going through axis "X" and at an angle to plane "XY".

For your 2nd pattern instance, this angle will be 17degrees.

The plane "YZ_ROTATED" is defined by going through axis "Y" and at an angle to plane "YZ"

The angle of "YZ_ROTATED" plane is the other control angle - in your case 51degrees.

To be able to orient the sketch, I made plane "NEW_YZ" - defined as going through the axis "NEW_Z" and perpendicular to plane "XY_ROTATED".

The axis "NEW_Z" is the intersection of planes "XY_ROTATED" and "YZ_ROTATED".

Notice that if the "XY_ROTATED" plane is at 0 angle, then "NEW_YZ" is coincident with the plane "YZ_ROTATED".

Can you open the file I attached?  Then "edit" the two planes to see it in action:

axis_pattern_feat_editing.png