5/2/2017

This week we worked toward a complete inner frame. The wheel assembly and wheel motor mount have been prototyped. The poker has been prototyped using Legos. The frame prototype is mostly complete. The spinning donut has been laser cut and is ready to be attached to the lazy susan.

Wheel Assembly Prototype

The wheel to axel attachment assembly has been prototyped via 3D printing. The attachment only attaches the wheels to the axel, leaving the rod free to spin in bushings. This ensures that the wheels can be driven in the back and move freely in the front.

Wheel Motor Mount Prototype

This mounts the motor for the driving the wheels. There will be two of these, one on each side. The gear will be laser cut for the motor shaft. A Lego belt will be use to close the gap between the motor and the wheel assembly.

Poker Prototype

A prototype of the poker has been designed out of Legos. This may later be partially laser cut to save space. It uses a rack and pinion design to drive the poker forward or backward with a servo. This will be mounted on the donut assembly.

Frame Prototype

The frame prototype is partially complete. The corners have all been bracketed but the back rail is currently without L brackets. The wheel assemblies, motor mount and donut will all be attached to this frame.

Donut Prototype

A new donut prototype has been laser cut with a geared edge so it can be easily spun. Both the base and spinning parts of the donut had to be cut in multiple sections in order to be accommodated by the size of acrylic sheets we had available. The both parts include holes for mounting and wires. The base part also include holes to mount to the side brackets.

Brackets

A Bracket for the 2020 to attach to the frame has been designed and prototyped. It has not been attached because holes have not been drilled into the frame yet.

We've also created a bracket for mounting a motor to the 2020 aluminum. The bracket has 4 wheels which roll along the v-slot aluminium and there will be a belt which wraps around the motor to drive the platform up and down.

Gripper Prototype

The gripper prototype is mostly complete except for the forward and back motion which will be implemented using a rack and pinion on the donut.

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