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mathew.palazola1-Visitor
1-Visitor
January 2, 2013
Question

sweep protrusion using 3d curve

  • January 2, 2013
  • 4 replies
  • 6953 views

I want to use "insert sweep protrusion" using a "3D" curve as the trajectory.


I have in the past always done this with intersected curves, but sometimes that's a lot of work.


I thought this would be easier if I just defined a set of points and put in a curve using them.


I defined a set of points using Offset Coordinate System Datum Point Tool.


Then I put in a curve using "through points".


When the points are all co-planar (on the YZ plane in my pictures), the Insert Sweep Protursion command accepts the curve


and the protrusion comes in fine.


Once I make the points and curve not co-planar, ProE will not accept the curve as the trajectory and gives the message


"Specified trajectory is not valid. Please reselect."


This really sucks.


Is there any way to get ProE to accept the 3D curve without having to do intersected curves?


4 replies

B
bfrandsen10-Marble
10-Marble
January 3, 2013
A variable section sweep can handle non-planar curves.

/Bjarne
    J
    johnweaver1-Visitor
    1-Visitor
    February 7, 2019

    I can't even get intersecting curve function to work.  Very frustrating

    S
    23-Emerald III
    StephenW23-Emerald III
    23-Emerald III
    February 8, 2019

    Give us an idea of what your intersecting curve is. Screen shot or model or something. 

    Intersecting curves are relatively easy but endpoint and extents of the curves along with complex curves can get pretty tricky

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    February 8, 2019

    Dunno what you're doing, but I got a swept solid using both a curve projected onto a surface and a curve thru points.  Then again, I'm on creo 3, and I remember getting the "invalid trajectory" for the old sweeps.  When they bundled it into one command (Yay, smart move - unlike the ribbon...), it seems to be as robust in taking trajectories as the old Variable Section Sweep was.  so, I'm guessing you're on an old version of Pro/E, and as such bfrandsen's reply should work.  In the future, you should post what version you're using.AA-SWEEP1.jpg

    J
    johnweaver1-Visitor
    1-Visitor
    February 8, 2019

    I found a work-around, but it requires points.  Because of various reasons (financial and others) I am required to use the Semi-Rigid Cable Advisor module in CoCreate to make a 'bend' file for our coax cable benders.  There are several ways that we receive data from customers.  

    1.  They send 2D pdf and we  have to create model and determine sharp intersection points and enter into CoCreate with bend radius and create a Cocreate model which allows us to make a 'bend' file.

     

    2.  Customer sends STP - We use datum curves that intersect to determine intersection points, we enter in and follow rest of step 1.get us ready for step 1.

     

    3.  Customer sends in bend file.  - obviously this is best.

     

    I have been using  Creo/Wildfire/Pro/E for a long time.  I have been using CoCreate for 2 months (and would like to do away with it.)

     

    The best way would be to have a bender that can take an STP from any software and create what the bender needs to form.  I don't have $200k to donate so that we can purchase such a machine.  

     

     

    J
    johnweaver1-Visitor
    1-Visitor
    February 8, 2019

    PS......In Wildfire (Or before) you could simply draw a curve on one plane, draw another curve on another plane, pick both and set a tangency between curves and you had a 3D curve...............unless that was in Solidworks, but i think it was Pro/e.  Was MUCH MUCH easier.

    S
    23-Emerald III
    StephenW23-Emerald III
    23-Emerald III
    February 8, 2019

    Currently in Creo, you can generate your 2d curves and then use the intersect command under the model tab  (editing area of the model tab

     

    intersect.jpg

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