Project
Portfolio

Robo-Arm

Same company, very different project. A motorized, sensor-controlled arm to scale-up small art models (with an adjustable scale, ranging from 1:2.5 to 1:6.4). The total reach of the arm is 100".

	The motion of the large arm is directly controlled by a small arm with a maximum reach of 25", mimicking a human arm with an inverted elbow joint.
The arm can be used with either a power tool (like a router) for foam and soft to medium materials, or with different scraping tools for clay.

For the design I had to take in consideration the changing geometry through the scale adjustment, the required torque, gear ratios and the weight of a tool.

I mounted 3 Teijin Seiki and 3 Mectrol gearboxes, each with zero backlash.

With the exception of the welded steel base and the drive components, the entire arm is made out of aluminum.

For the motors I opted to use Magmotors, with various performance from 75 oz-in continuous torque up to 512 oz-in continuous torque required for the large 'joints'.
For the structural posts aluminum sail masts were used for their excellent weight-rigidity ratio.

For design and renderings I used Euclid CAD Software.