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CNC Mill Conversion:

To Do List

Z-Axis Mod

One Shot Oiler

Epoxy Granite Fill

Electronics

    Axis Modules

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CNC Mill Conversion To Do List

Components Purchased

1KVA 67Vac x 2 (dual coils) and 12Vac x 2 (dual coils) toroidal power transformer. Should I use 2 of the capacitor/rectifier assemblies that I used for the CNC Lathe since it has 2 coils?
19" x 19" x 12" Rittal NEMA Enclosure for the electronics
Industrial Hobbies "Mechanicals Only" CNC Conversion Kit
3 x Industrial Hobbies Optical Limits
3 x Gecko 320 servo drivers from www.homeshopcnc.com ($99 when ordered with the servos)
3 x 850 oz in Servos with integral enclosed encoders from www.homeshopcnc.com

 

Conversion Checklist & To Do

Note: Order is based on the IH CNC assembly instructions ordering. Completed items are in bold.

 

Mill Updates and CNC Installation
 
 
Area Setup, Prep, & Miscellaneous Work
Disassemble Mill: Done!
Get down the mill stand and set it up for working: Done!
Lap the Ways: Done!
Fill base with Epoxy Granite: Done!
Engineer a stronger column connection similar to Davo727's . Done!
Hockey Puck Levelers. Done!
Make the IH Z-Axis Modification. Done!
Fill column with Epoxy Granite. Done!
Engineer new pulley system and belts for X and Y axis to fit the larger servo shafts since stock pulleys won't work. Done!
Order new X and Y axis motor pulleys and belts from SDP-SI. Done!
 
One Shot Oiling System: Done!
Plumb one shot oiling in saddle. Done!
Mount one shot pump to column. Done!
One Shot Oiling on Z-Carriage. Done!
 
Y-Axis
Install ballscrew so Y servo drive is "on bracket". Done!
Install home/limit switch. Done!
Install belt and pulleys. Done!
Button up to finish Y-Axis drive.
 
X-Axis
Install ballscrew so X servo drive is "on bracket". Done!
Install home/limit switch. Done!
Install belt and pulleys. Done!
Button up to finish X-Axis drive.
 
Z-Axis
Install column on mill. Done!
Install ballscrew so Z servo drive is "on bracket". Done!
Install home/limit switch. Done!
Install belt and pulleys. Done!
Button up to finish Z-Axis drive.
 
Axis Modules
Cut heat sinks to size and mill shoulders. Done!
Purchase heat sink mounting hardware: 4-40 and 8-32. Done!
Drill and tap heatsinks. Done!
Make heatsink spacers. Done!
Make axis module front panels. Done!

Populate components. Done!
Wire up axis modules. Done!
Wire power cords to servos. Done!
Test axis modules. Done!
 
Electronics Enclosure
Order DC power supply. Done!
Set up the wife's new computer so the old one can be used on the mill. In progress. Remaining work: Setup Outlook. Move data.
Order boards from CNC4PC. Done!
Remove the existing racking from inside the NEMA enclosure. Done!
Enclosure mounting holes for axis modules. Done!
Make a sub-chassis for the CNC4PC boards, limit switch board, and E-Stop relays for DC Supply and VFD. Done!
Order E-Stop, Start plunger, and status LED. Done!
Front panel with Start, E-Stop, and Status LED. Done!
 
Final Assembly
Install way covers
Tune servos
Install mill spindle
Square the Mill Column
 
 
Tuning & Testing
Axis direction of travel as expected?
Test Each Axis Travel Steps/Inch. Adjust as Needed.
Check Each Axis Backlash. Adjust as Needed.
 
 
Future Work
Charge Pump
E-Stop Feedback to Mach3
Build home switch board.
Wire home switches. What connectors?
Spindle board and VFD
Coolant board
 
 
 
 
 
 

Need to Buy

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
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