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doug_anderson1-Visitor
1-Visitor
September 9, 2020
Question

warp tool bend axis location

  • September 9, 2020
  • 2 replies
  • 4434 views

still learning the warp too and need some help

i've got a rubber strap that is modeled in its moulded state but for the assemble it need both end bent down.

part is modeled with the csys at the center of the part.

the first end is easy to setup. bend axis sits on the top plan as this is the middle of the part, moved the pivot to one end so that the unbent part stays in its original position.

the second end is not so easy as i cant get the bend axis to sit on the top plane, if you click center axis is puts it half way through the now bent part. and moving the axis when you are looking normal on the end of it doesn't work. moving the axis when the model is at a strange angle is difficult to get it where you want. also what do the marquee refs do?

effectively, in the enclosed image how do i drag the marquee box up and down. i need the yellow bend axis to be on the top plane of the part.

any advice would be greatly appreciated.

2 replies

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
September 9, 2020

Warp is probably not the best tool for this. Check out spinal bend function to get your "bent" geometry of the part. I have used the spinal bend to do exactly what you are describing if I understand it correctly. With spinal bend you can parametrically control how the geometry gets "formed". Use of the perimeter dimension will make it it easy to control the bend zone and keep it where you want it. The example below was realized using spinal bend.

 

As moldedAs moldedAs assembledAs assembled

    D
    doug_anderson1-VisitorAuthor
    1-Visitor
    September 10, 2020

    hi,

    yeah that works much better. much easier to control. 

    one quick question. if i try and from the whole thing with one sketch it does a really weird forming thing so i've needed to use 2 features. middle of part out in 1 feature and then the same for the other side. 

    is this how it work or can it be done in one operation?

     

    thanks

    tbraxton
    22-Sapphire II
    tbraxton22-Sapphire II
    22-Sapphire II
    September 10, 2020

    It may be possible to do it in one feature. I would need to see the geometry to determine that. The example shown above uses a total of 4 spinal bends to get the formed geometry seen in the picture.

     

    From your description I gather that you want to bend it symmetrically about a symmetry plane. In that case it is more likely it could be done in a single feature. Are you forming it about a constant radius (cylinder) to bend each side of the part? This is where the perimeter dimension comes into play so that the developed length matches that of the flat geometry,

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    September 15, 2020

    Excellent advice from tbraxton.  Warp is very powerful, but more of a "free-form" modelling tool, not what I'd use for an Engineering tool from it's lack of constraints.

     

    One other thing:  Most times I don't use a spinal bend on solid geometry because of the distortion of the sides, normally what I do is spinal bend a surface, then thicken it.  For the stuff I've done at least, it worked better.

    D
    doug_anderson1-VisitorAuthor
    1-Visitor
    September 16, 2020

    thanks i'll keep that in mind.

    the bent part was just for a visual so any slight distortion is not an issue.

     

    cheers

     

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