README.md 2.81 KB
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# The Madison Park Vocational Machine 

This machine's vocation is making other machines.

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![mpvm-at-mpvhs](/images/mpvm-at-mpvhs.jpg)

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Here you'll find documentation for the mechanism and design of the machine pictured below, and rough documentation on how to build it.

![mill](/images/mpvm-v03.jpg)

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![motion](/video/mocontrol-mpvm.mp4)

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This implements the [RCT Gantries](https://gitlab.cba.mit.edu/jakeread/rctgantries) project for axis design, and the [AutomataKit](https://gitlab.cba.mit.edu/jakeread/automatakit) project for controls. 
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The machine has a bed size of ```410 x 820 x 40mm (16.15 x 32.30 x 1.5")``` - the machine itself is 740 x 1100 x 430mm, and weighs about 20kg. It fits on one 4x8' sheet of HDPE, that we cut on our shopbot with a 1/8" single-flute o-cutter. The whole thing machines in about 2.5 hours, and goes together in a few afternoons or less. 

![mill](/images/mpvm-v03-jake-make.jpg)

## Networked Hardware

![router](/images/mpvm-v03-atkrouter.jpg)

![stepper](/images/mpvm-v03-atkstepper.jpg)

![bldc](/images/mpvm-v03-atkbldcdriver.jpg)

## Preloaded Belt Gantries

![beltz](/images/mpvm-v03-rctgantry-belt.jpg)
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## CAD and CAM

There is a rhino file for perusal under ```/cad``` in the repo. Axis are organized onto layers, and the sets of parts needed for 3D Printing and Milling the machine are present. 

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CAM for Fusion360 is located [at this linke](https://a360.co/2lYDSYg)
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![beltz](/images/mpvm-rhino-cam.png)
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## Assembly 

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 qs for lc
  - drills ?
  - soldering irons ? skills ?
  - hex keys ?

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### The Tools You'll Want

 - soft hammer
 - drill, and driver (nice to have two) 
 - size 34 or equiv. drill bit
 - 3.25mm or close drill bit  (1/8")
 - t15 driver 
 - 2.5mm hex driver
 - 4mm hex driver 
 - clamps? 
 - de-burring tool 
 - flat head screwdriver (playing the role of crowbar)

- Z Gantry 1st
 - bang together and screw

- YZ Block now
 - all hardware should go on (save for motor) before the go-together - but fit up so that you understand orientation
 - socket head cap screw heads should face *towards* other gantry... think of where you'd like more clearance 

 - X Rail, or first, or simultaneous
  - rollers go on
  - beam goes together - try to make it straight!
  - careful on the direction of the back plate - look at the wire routing bit! 

 - Y Gantries / Rollers
  - hardware on, then bang on, then motors. tight screw, but manageable

 - Chassis
  - assy Y rails on sides
  - recommend hitting these edges with the deburring tool 
  - floor, then sides on to floor
  - faces

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 - Final Assy 

# BOM

Bearing Sets: 2 per constraint 
 z - 8 
 y - 12
 x - 7 
 - so 56 bearings total

M5 SCHS
 Motor Mount w/ Bearing Situation - 8x 35mm
 Motor Mount - 8x 20mm
 Out-of-plane constraints - 16x 35mm
 In-Plane constraints - 11x 25mm

So, 8x 20mm, 11x25mm, 22x 35mm. 
3 Washers each, 41 * 3 = 123 Washers, 41 Nutz.