Week16 : Machine Design

Group assignment documentation page

Assignment requirements:

• actuate and automate your machine
• document the group project and your individual contribution

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Node : Fablab Kamakura

Group members :

• Daisuke Doyo
• Jun Kawahara
• Kai Naito

Downloadable files

• Pen holder(stl) and svg gcode generator(pde) from Daisuke Doyo
• Gcode sender program(pde) from Jun Kawahara
• Preparation for gcode (svg) from Jun Kawahara
• Circuit gcode (gcode by Inkscape gcodetool) from Jun Kawahara
• Lasercut data for enclosure(pdf) from Kai Naito

previously in MTM

We could sort of actuate and automate our CoreXY, but we had remaining problems to address.

• tilted pen: pen tilted during plotting.
• mirrored image: plotted image was mirrored.
• fragile housing: housing beams were thin and fragile.

tilted pen

Daisuke redesigned a pen holder. What he did was to make the leg long which could reduce the vibration during plotting.

Here was the evolution of pen holders. Rightmost one was the final design.

See detailed documentation at Doyo Daisuke’s documentation page.

mirrored image problem

Jun examined the wiring combinations between motor drivers and stepper motors to draw an image as it should be. He found the right connection and here is the result.

See detailed documentation at Jun Kawahara's documentation page.

fragile housing problem

Kai redesigned enclosure. What he did was to make the height of housing same as a stepper motor's. Before modification, a motor was hanging from the beam of housing.

See detailed documentation at Kai Naito's documentation page.

preparation for plotting

CoreXY plotter was not able to connect components by just drawing. So we handwrote terminals beforehand.

It's kind of SMD(surface mount device).

We checked conductivity before final performance.

Ok, Lights, Camera, Action!