Linear axis motion - Design and Build
Build and Test
To design the linear motion axis designed, I found some acrylic pieces and used a laser cutter to cut them into required dimensions. Individual pieces are glued together to form a complete assembly.
In order to actuate the linear motion axis, we need an actuator which is capable of converting rotary motion to linear motion. Here, I chose an origami based actuator which we call 'Flexigami'. It comprises of individual unit cell of an origami structure which are stacked back to back. Following video demonstrates the functioning of Flexigami
Here, a unit cell of Flexigami is subjected to cyclic uni-axial compression and extension tests. In this setup, the top plate is restricted from rotation while the bottom plate is allowed to freely rotate. Because of the geometric and kinematic constraints of Flexigami, compression leads to rotation of the top plate. In order to build an actuator for conversion of rotary to linear motion, the boundary conditions are flipped as shown in the next video.