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sweep curves

apollo

New member
Hi,


Can someone show me how this is done? I know how to do it on one plane but this is done on all planes...
 
Looks like you could just sketch 3 sections on three planes, forming a string
of curves that then use as chain for trajectory for your sweep.

So for the first "L" (the upside down one that looks almost like a "7" from
this angle, would be drawn on one plane. Then create plane that's
orthogonal to first one + through the ending leg of first sketch, and draw
the second bend plus the next straight segment on second plane. Then
create third plane orthogonal to 2nd plane + through the second sketch's
last leg, and finally draw the last pair of bend and straight section.

Once have those three sketches, they should be selectable as chain for the
trajectory of your sweep.
 
I still don't understand.
smiley19.gif
 
make a curve thru points. First make points on the first plane, then make them on the second plane. Now use all of your points together with curve thru points. finally use the curve to create your protrution........
 
No I do not have any movie footage of me creating it.


Just make the sweeping curve feature first. You don't need to make it all in one feature, but when you do the protrusion you will need to select one continuous tangent curve......
 
One way to do this is create datum points using the Offset Coordinate System Datum Point Tool. Here is a picture of how I created the points.





Next, create a datum curve through the point array. For the curve I used the options Whole Array and Single Rad. It will ask you for a radius during the feature creation.





For the sweep choose select traj, then Curve Chain from the Menu Manager,select the the first portion of the curve, and Select All>Done>Okay. The sketch will orient itself and you can skecth the section.








Here is the finished model.
 
Kdem, Tommypurple2 ,


Can you show step by step if possible exactly howyou do this? Assume that I am new . Thanks.
 
From the pictures in previous posts the shape is basically two L shapes on two planes intersecting at a point. For now ignore the three bends in the model. For the method I used five points can be used for the basic shape, two end points and three points where the bends are located. To create a datum point array use the Offset Coordinate System Datum Point Tool. This is found in the datum point flyout tool bar or under Insert>Model Datum>Point>Offset Coordinate System. You
 
Kadem,


I create 2 L shapes one on each plane. This is ok but I can't make a radius conrner where the 2 planes intersect. Is that because each L shape is sketched on a different plane and therefore they aren't connected?
 
If you are going to use sketched sections you will need three sketches on three planes as 2ms1 mentioned in a previous post. Hereare somepictures of the trajectory created using sketches. The first sketch was the L shaped portion of the trajectory in the middle. The other sections were the partial J sections on the ends.
 
Kdem,


Finally I was able to do it. I had to 3 lines one on each plane and the round corner has to be on each line . I noticed that the round corner can't be done between the 2 separate lines on 2 separate planes.
Here is what I did:
 
Bringing up an older topic here.

I'm running into a problem. When I create a 2d datum curve, I have no problems making it into a sweep. However, when I make the datum curve 3d, I get an error

"specified trajectory is not valid. Please reselect."

what I'm doing:

creating 4 datum points, the first 3 on the same plane, and then the fourth is elevated to make 3d (direction does not matter).

choosing to make a datum curve. >thru points >spline >whole array >add point >select all 4 points >done >ok

Sweep >Protrusion >select traj >Curve chain >select all >done ="Specified trajectory is not valid. Please reselect."


2008-11-17_184524_prt0041.prt.zip
 

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