Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: sinista on October 26, 2011, 01:35:17 PM

Title: hexapod :)
Post by: sinista on October 26, 2011, 01:35:17 PM

Hi All,

Im looking for some designs on how to make a hexapod,
something like

http://www.active-robots.com/robots/bipeds/phoenix-3dof-hexapod-kit-black.html (http://www.active-robots.com/robots/bipeds/phoenix-3dof-hexapod-kit-black.html)

im not so interested worried about the programming side yet, I just want some leg templates with dimentions and sizes.

Cheers Guys.

:)

Title: Re: hexapod :)
Post by: Gertlex on October 26, 2011, 09:33:45 PM

My impression is you can make the legs look like whatever you want, pretty much.  You need to know what servos you're using though, to make a an actual leg template...

Title: Re: hexapod :)
Post by: newInRobotics on October 27, 2011, 02:34:25 AM

Quote from: sinista on October 26, 2011, 01:35:17 PM

something like

http://www.active-robots.com/robots/bipeds/phoenix-3dof-hexapod-kit-black.html (http://www.active-robots.com/robots/bipeds/phoenix-3dof-hexapod-kit-black.html)

im not so interested worried about the programming side yet, I just want some leg templates with dimentions and sizes.

You will need access to CNC to make 6 identical legs like shown in the link You've provided. We don't know level of You're experience, so it's hard to give an advice.

To get dimensions, You need to:

• Do some guesstimation. Give it a good thought and get a rough idea what robot size You are after (limb segment lengths are important). Use CAD or paper to better visualise what You're after.
• Calculate (guesstimate) weight of the robot (based on materials and their quantities planed to be used) and some extra weight on top of it as a safety margin.
• Based on the weight of the robot calculate motor torque required.
• Once You have torque, browse for relevant motors online and check their dimensions.
• Adjust relevant robot parts' sizes to fit motors.

Title: Re: hexapod :)
Post by: Gertlex on October 27, 2011, 07:54:21 AM

Quote from: newInRobotics on October 27, 2011, 02:34:25 AM

You will need access to CNC to make 6 identical legs like shown in the link You've provided. We don't know level of You're experience, so it's hard to give an advice.

Dremel would work, too, if you know what you're doing.  Or waterjet/laser cutting.

Title: Re: hexapod :)
Post by: Soeren on October 27, 2011, 11:58:15 PM

Hi,

A jig saw or hack saw and a set of files will do nicely :)
(A band saw or scroll saw will make it faster if one's available).