Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: robotcoder on May 02, 2012, 10:18:10 PM

Title: Need ideas for movable finger joint
Post by: robotcoder on May 02, 2012, 10:18:10 PM

I am planning on building the below finger and I am not able to find a way to connect the joints in a way that they can be moved.  Is there a special screw or rivet that would work for movable joints.  Any ideas would be appreciated.

(http://farm8.staticflickr.com/7204/7137775179_504ca2ef4f.jpg)

Title: Re: Need ideas for movable finger joint
Post by: jkerns on May 03, 2012, 05:37:04 PM

Put a bushing through the moving part so that the part moves on the bushing. Then a bolt through the assembly and bushing to clamp the bushing in place.

Or, use a bolt and don't tighten it (use an elastic stop nut so it doesn't come off).

Or, a clevis pin.