|At Jack's Homebrew Meeting|
Jack, Bob and Walt
Also, I have been discussing and following John Hoaglun progress of his recently acquired CNC PCB Router. John has done some interesting experiments to create configurations that allow for detailed routed PCB projects.
All of this has rekindled my interest in my own, all most completed (75%) Homebrew CNC Plywood Router project - which I named the "M45".
M45 has been standing in the corner of the shop for several year, gathering a little rust, waiting for the right moment to be reactivated. If I remember correctly, the bed was designed to hold a 4 x 8 foot sheet of plywood, with an active routing space of 4 x 5 feet.
All of the parts for M45 were cut on my PlasmaCam CNC Cutter, Welded together, Milled, or folded in my shop. Motors, Transformers and some other Electronics were purchased from Surplus Center. The actual motor controllers are from Geokodrive. I added my own designed positions encoders to the motors.
The X and Y feed motors are quite heavy duty DC motors, I do not remember the spec's. They are about 4.5 inch diameter, about 8 inches long, and with a 5/8 inch shaft.
|Y-Axes Motor and Drive Chain|
|X-Axes Motor and Drive Chain|
|Z-Axes Motor (with internal encoder)|
and Drive Belt
The Y gantry rolls on bearings at each end of the slide, and attached to a self tension Chain and Cable. An under slide bearing provide stability.
|Y-Axes Drive Chain and Pulley|
|Y-Axes Chain and Cable Attachment|
|Under Slide Bearing|
Tension is provide via the bolts on the ends
|CNC Controller and Power Supply|
These were tried, but too small for this Project
They maybe used for another CNC project
As shown the Motors are mounted, and the Controller has been built and tested. The project was put on hold for a variate of competing interests and responsibilities.
I should complete this Project.
But alas, . . . I have too many projects, and too little time (now that I am retired :-) to (re)start work on another project
I wonder, . . . How did I ever get anything done when I was still working a 60 hour per week job???