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danders23815-Moonstone
15-Moonstone
December 19, 2023
Question

How to pattern a curve attached to 2 points that have each been pattern tabled?

  • December 19, 2023
  • 2 replies
  • 3051 views

Hi,

I have a number of individual points that I would like to pattern with individual pattern tables and then create a curve thru a point in each set of pattern points and then reference pattern those curves to the table pattern points.

Is this possible and how?
In the picture below I have created 2 offset coordinate system points and have patterned them separately using separate pattern tables.  I then created a curve thru the 2 points I created and then referenced pattern the curve. the pattern of curves should be separate straight lines.  For example the second curve should be going from pnt1 to pnt10 and not from pnt1 to pnt9 and so on.

Any ideas on how to fix this issue?

danders238_0-1703022740539.png

my ultimate goal is to use a family table to swap out the pattern table to change the position of each row of points.

Thanks for any help you may provide!

Don A

2 replies

P
19-Tanzanite
pausob19-Tanzanite
19-Tanzanite
December 20, 2023

I don't think there is a way in Creo to do a "multi-pattern-reference-pattern".

But can you perhaps manage the pattern of the point coordinates using a single pattern table?

 

pausob_1-1703030843598.png

 

 

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
December 20, 2023

Creo 7 model posted for reference.

 

This appears to enable the goal to pattern the features as described. The model uses offset from csys datum points to define the proximal and distal ends of the curve that will serve as the pattern leader. A curve through points is created for the pattern leader. These two features are grouped and then patterned using the pattern table functionality.

 

This is an alternate way to implement the desired curves mapped to the points by using datum points offset from csys rather than a just pattern table. I would not use a family table to modify the model, but it may work for you.

 

Note that you can import the coordinate values if you use an offset from csys datum point array feature. I would import .pts files used by the datum point features to update the model rather than a family table. There may be a way to avoid the pattern table altogehter and use the offset point array only but I am not seeing as of now. I will consider it again at a later time.

 

About Datum Points Offset from a Coordinate System (ptc.com)

 

This is using a pattern table to add sets of points and curves as pattern instances and can be extended to N curves as required. The pattern table is used to add the coordinate values of the proximal and distal points of each curve instance in the pattern.

 

tbraxton_0-1703044422540.png

 

 

Offset from CSYS datum array with table entry. Note the option to import the coordinates.

tbraxton_1-1703039063334.png

 

 

D
danders23815-MoonstoneAuthor
15-Moonstone
December 20, 2023

It appears that the solution you and Pausob are proposing are the same solution and might work for what I'm trying to do but would require a lot of work determining the locations for all of the points for both states of the component (component drawing and assembly drawing).  Looks like what I would like to do may not be possible.

The component model I'm trying to make has wire leads that start at different locations at the top of the image below and will have straight wires for the component drawing with 2 wire lengths. I need to be able bend the wires in a curve and bundle them in a circle along with staggering the ends of the wires so the component may be spliced into the harness at the assembly level. The other need was to have the point clouds for each section tied to a coordinate system so the routing of the wire may be changed at the assembly level for the component. Note the component wires will be tied to a Creo Cabling harness at the assembly level.

danders238_0-1703081793226.pngdanders238_1-1703081803228.png

 

I will try and share more images once I have the models more complete.

Thanks,

Don A

P
19-Tanzanite
pausob19-Tanzanite
19-Tanzanite
December 20, 2023

Hmm, I assume that the the proposed solutions are more "difficult" from your intended solution, because all points have to be specified in terms of a common coordinate system - and yet the two sets of points (1st to specify the cables' start points, and 2nd to specify their end points) are each more easily expressed in terms of their own coordinate systems, and the transformation between these two coordinate systems is determined by the assembly context?

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