problem in loft between a circle and hexagon

5 answers

• 
  FredSWUG over 1 year ago

  If you upload your model it will be easier to troubleshoot.
  I made a model according to your values, and the 4mm radius arc falls beneath the circle profile, that will cause an error. See the second attached image.

  

  1. 
     farzad over 1 year ago

     please see my answer, thank you fred, and please choose the dia of hex = 3.8, it will be like my case

• 
  FredSWUG over 1 year ago

  Farzad,
  I've attached a sample file for you to review.
  1. Sketch3 is under-defined. Make an edge of the hexagon vertical or horizontal. Without it, your guide curve never attaches correctly.
  2. Sketch4 is under-defined. It should connect to the the two profile sketches. I'd add tangency constraints as well.
  3. Sketch2 is too large. You are asking this loft to travel horizontally with no thickness, and then follow the guide curve up to the hexagon. It won't work. I've added a new sketch with a diameter that connects to the guide curve. The result is the same.
  4. You don't always have to use piece and coincident relations between profiles, paths, and guides, but it is a good practice.
  5. I added in several guide curves to help form the shape. These are copies of (from the derived sketch command) the original guide sketch.
  6. I split the circle profile into a matching number of segments with the hexagon. This is not usually needed with a circle, but any other shape wil need a matching number of points to blend correctly, so it is a good practice to get used to.

  

  Attachments

  Example - Part2.STEP, 44 KB
  Download

  Example - Part2.SLDPRT, 113 KB
  Download

  1. 
     farzad over 1 year ago

     Thank you very much , but shall you please re-upload your sldpart ? cause it does not open in mine, which version is it ?

  2. 
     FredSWUG over 1 year ago

     I can't think of any reason why it would not open, it is a Sw2016 file. I noticed you were also using SW 2016, so it should work. I am on Service pack 2, but that should not matter.

  3. 
     farzad over 1 year ago

     Thank you Fred, well your help was quite great, but yet I could not open the file to follow you

• 
  Roger-Marie Couture over 1 year ago

  You do not need guide curve if you solidly work with surfaces !

  Answered with a tutorial: https://grabcad.com/tutorials/problem-in-loft-between-a-circle-and-hexagon--1

• 
  Roger-Marie Couture over 1 year ago

  When you perform a scan does not use a guide curve if it is not necessary. Your bend radius is certainly not necessary and certainly not better than tangeance profiles and surfaces. Surface tools are more effective for the majority of the scans.

  Attachments

  LOFT CIRCLE TO HEXAGONE.SLDPRT, 134 KB
  Download

  1. 
     farzad over 1 year ago

     thank you very much, that was a greaat example

  2. 
     farzad over 1 year ago

     just one question , why did you do the last three functions, the knit, offset and intersect, while also the offset quantity was 0

  3. 
     Roger-Marie Couture over 1 year ago

     Because sometimes it is not possible to obtain a volume with the knitting function. I was also referred to a video showing how to move from volume to surface and return to volume. Besides I opened another topic on this issue.
     
     https://www.youtube.com/watch?v=BVaQB-1CF50&list=PL-QWtctEjTXHHnA3WnpeOFRE2MmFbsYfk

• 
  farzad over 1 year ago

  Thank you Fred, you got me right I add the images here cause it seems only possible here, and no , my case does not fall under the circle, cause the hexagon is smaller

  Answered with a tutorial: https://grabcad.com/tutorials/problem-in-loft-between-a-circle-and-hexagon

  Attachments

  Part2.SLDPRT, 61.6 KB
  Download