Author Topic: Hexapod leg design  (Read 10586 times)

0 Members and 1 Guest are viewing this topic.

Offline izuaTopic starter

  • Supreme Robot
  • *****
  • Posts: 682
  • Helpful? 0
    • izua electronics
Hexapod leg design
« on: August 22, 2008, 05:14:05 PM »
I've been playing with some CAD software lately (solid edge & solid works) and I feel the need to design something complex. So I thought a hexapod might be a good start. What I basically want is a hexapod that has 3DOF per leg, except the front legs, which will do 4 DOF (so it can also grab some stuff, like a fly f.i.).

Only problem is, I know close to nothing about leg design. I've been playing with some straight segments, but lynxmotion has some really nice (and menancing looking :P) legs on their hexes. I couldn't find a paper, or anything else, on this topic. Any hints or ideas?

Thanks.
Check out my homepage for in depth tutorials on microcontrollers and electronics.

Offline Gertlex

  • Supreme Robot
  • *****
  • Posts: 763
  • Helpful? 24
  • Nuclear Engineer ยท Roboticist
    • Index of Oddities
Re: Hexapod leg design
« Reply #1 on: August 23, 2008, 03:38:31 PM »
I think the end result is going to be largely just copying how others have done legs.

If you want to play around with (2d) linkages, I'd suggest this site:
http://www.mekanizmalar.com/fourbar01.shtml
I

Offline izuaTopic starter

  • Supreme Robot
  • *****
  • Posts: 682
  • Helpful? 0
    • izua electronics
Re: Hexapod leg design
« Reply #2 on: August 23, 2008, 04:08:40 PM »
Everything is a copy of a copy of another copy.
But in the meantime, I'd like to know why their legs look the way they look.

Come on, no one here ever made a hexapod?
Check out my homepage for in depth tutorials on microcontrollers and electronics.

Offline Ro-Bot-X

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 1,431
  • Helpful? 25
  • Store: RoBotXDesigns.ca
    • Ro-Bot-X Designs
Re: Hexapod leg design
« Reply #3 on: August 24, 2008, 07:00:33 AM »
Check out the uBotino robot controller!

Offline izuaTopic starter

  • Supreme Robot
  • *****
  • Posts: 682
  • Helpful? 0
    • izua electronics
Re: Hexapod leg design
« Reply #4 on: September 17, 2008, 10:50:17 AM »
My second attempt, with a servo attached. Looks a lot like the legs from lynxmotion, I have no idea why  ::)
What do you think?
Check out my homepage for in depth tutorials on microcontrollers and electronics.

Offline Admin

  • Administrator
  • Supreme Robot
  • *****
  • Posts: 11,703
  • Helpful? 173
    • Society of Robots
Re: Hexapod leg design
« Reply #5 on: September 19, 2008, 08:34:27 AM »
Your entire design should be based on three factors:
1) as light weight as possible
2) minimal bending in all directions
3) can support weight of robot


Looking at your design, it looks like it might bend (the direction into the page). Entirely based on intuition, I'd make it thicker and make the internal hole larger.

 


Get Your Ad Here

data_list