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Modeling tubing on a spiral curve

D

dernst

New member
I'm attempting to model a roll of cross-hatched tubing... I was able to develop the spiral using the equations from another post. Is there a way to model the tubing perpendicular to the plane in which the spiral is drawn and pattern the tubing to follow the spiral curve. Anyother suggestion on how this can be accomplished?


Thanks in advance,


DT
 
There might be but you need to take another whack at describing what you want to do. Maybe a pic to help get the point across.
 
I have a cylindrical feature that I attempting to follow a spiral curve. The feature is perpendicular tothe datum the curve was drawn. Imagine a rolled bamboo mat... the binding twine would be the spiral curve abd the bamboo would represent the feature I'd like to follow the curve.


ctools-makisu300.jpg
 
Hi,


Create your cylinderical feature on the curve without taking any reference from other features are from other planes. then patteren the same along the curve. If it is not possible, first create the points on the curve as per the requirement with patteren option. take the first point as a reference for creating cylinder. Now patteren the cylinder along the points (reference patteren).


Regards


gondi
 
jeff4136 said:
Ok. Think I understand ...
2008-04-13_030822_spiral_feat_pat--wf2--.prt.zip
... assuming you can read WF2.
Examine each feature's dependancies if you have trouble recreating it.


You might also look at
Help / Part / Edit Features / Pattern / Example: Creating a Spiral Pattern
for another method if you want to do some exploring. It'll be trickier to
set up but well worth knowing about. Look at Dell_Boy's example in
http://www.mcadcentral.com/proe/forum/forum_posts.asp?TID=33 474
Click to expand...





Jeff... How do I change the number of instances in your example?
 
Actually, the way I set it up (ref the Note: "Pattern FID_98 Feature ...");
change the value of p35 in the pattern feature (Tools / Relations / Feature,
pick Pattern 1).


Edit: Sorry,Doug. Not enough coffee yet and I misinterpretted. Do what Dr_G said.
Edited by: jeff4136
 
Thanks for all the help... after converting my cartesian equation to a cylindrical equation everything is worked perfectly... the only issue now is get nearly 3500 instances in the model to regenerate without my computer slowing down to a snails pace.
smiley36.gif



Thanks again to everyone that contributed.
smiley32.gif
 
Now the "bamboo" needs to be at 15 degree as it goes around the spiral. I've tried extruding through the point, a datum curve by adding another PNT, etc... no lck with any of the attempts. How can i get the "bamboo" at 15 deg?


Thanks in advance.
 
Assuming it's a 'radial' angle...
Create an axis thru point, tangent to curve.
Create a plane thru axis, offset (angle) from the curve plane.


You might wanna breeze thru a few basic modeling tutorials.
They ~should~ teach you this stuff. Look also (search this site, there
are examples laying around, and web) for Group Pattern techniques.
 
Can u just give as a rough sketch or screen shot of your requirement. we will give u exact idea about it. you can complete with in a day.
 
I reduced the number of features required from around 2000 to 200 for clarity. I modified the example Jeff provided with the equations required for the spiral. The first picture shows the example Jeff provided with equations defining the required spiral.


spiral_feat_pat--wf2--.jpg



The second picture illustrates the current position versus the new position of the feature (datum curve), 15 degree from the original position.


hex_mat.jpg



I hope the pictures provide a better explaination of what I've achieving to accomplish.


Thanks again for all the help.


DT
Edited by: dernst
 
On seeing your requirement. The jeff is given a clear picture for your requirement. I seen his model uploaded in this. Only one thing is u have to tryit toexecute onceagain.


1. as per my knowledge u are failing to create a feature exactly on the point.


Note: When ever u create a feature on point for reference patteren there should not be any other references to the feature other than the reference belongs to the point.


Check is this isyour headache.


Regards


gondi
 
Ok. If the angle is in a plane tangent to the curve ...


_ Create an axis normal to the curve referencing DTM1 and DTM2.
_ Create an Angle Offset plane referencing the axis and DTM1
(or DTM2, don't think it should matter). This will be the
section (sketch) plane for an extrusion.
_ Create a plane tangent to the curve referencing the axis
and PNT0 to use for section orientation.
_ Create the extrusion then Group DTM2 thru Extrusion and
Reference Pattern the Group.


You may also be able to get by creating the plane tangent to
the curve and using it for a Revolved section referencing
DTM1 for section orientation and angle dimension.


As Gondi said, be mindful of what you pick for references. They
have to remain valid for all Pattern instances or it will fail.
 
dernst said:
I'm attempting to model a roll of cross-hatched tubing... I was able to develop the spiral using the equations from another post. Is there a way to model the tubing perpendicular to the plane in which the spiral is drawn and pattern the tubing to follow the spiral curve. Anyother suggestion on how this can be accomplished?


Thanks in advance,


DT
Click to expand...


Do you actually want to model some cross hatched tubing or do you want to hatch it after you've modelled it? You nee a variable section sweep in which you can set your normal plane. The hard bit has already been achived with your curve from equation.
 
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