Experimental Quadruped Robot With 3 Jointed Legs 3D Printer Model

Author: @
License: CC BY-SA
File formats: stl,3dm
Download type: zip
Size:5.1MB

The file 'Experimental Quadruped Robot With 3 Jointed Legs 3D Printer Model' is (stl,3dm) file type, size is 5.1MB.

Summary

This was the first version of a simple quadruped robot with 3 jointed legs. It is around 40cm high. It was designed for Power HD 1501MG Hi Torque Servos (17kg/cm), but note that the torque/weight means it cannot bound or run and they are underpowered for this application.

I think it needs almost double the torque in each joint. To walk, it had to move one leg very slowly forward at a time, while shifting weight (rotating the hips) on the other 3 legs. It sort of stumbled and shuffled then fell over.

The purpose was to experiment with mechanics of 4 legged walking using low price servos before I embark on a project with more expensive ones. It will never be able to carry the weight of a battery.

There is a new version with geared joints here:

http://www.thingiverse.com/thing:652121

It is still experimental but shows more promise.

anhle_tendon_pivot_x1.stl 1.4KB
ankle_x2.stl 87.5KB
bipedal_robot.3dm 8.1MB
bracing_lower_x2.stl 76.7KB
bracing_x1.stl 4.4KB
CHASSIS_ADAPTOR.3dm 114.7KB
CHASSIS_ADAPTOR.stl 243.8KB
cross_bracing_x2.stl 321.7KB
fibia_x2.stl 786.2KB
foot_x1.stl 148.1KB
HIP.stl 2.6MB
joint_cap_x2.stl 794.5KB
joint_cradle_x2.stl 1.1MB
spacing_x2.stl 30.2KB
tibia_x2.stl 140.8KB