CNC mill oiling system – plumbing
Monday, 25 March 2013
This is it… Grizzly Miller is in several large pieces on my bench, and the major upgrades have begun. First up, oiling system.
First step was machining the X and Y axis ways on the mill’s cross slide. I used a simple ‘S’ curve, programmed point-by-point into an old ProtoTRAK-converted Bridgeport. On the same machine I pocketed out some clearance for the X-axis ball nut.
Beyond these sketches, most of the design work happened on-the-fly. This is unusual for me, but I don’t have CAD data of the original milling machine parts, and tube fabrication turns out to be more sculpture than engineering anyway. I also bought a silver solder kit specifically meant for joining copper alloys, and tried a small test piece from some scrap material.
I then fabricated the main brass manifold and mounted it to the cross slide. From there it was a matter of drilling end points in the cross slide and connecting the dots with brass tubing. Each of the four ways are connected with my modified banjo fitting, which allows for flow control adjustments. The two ball nut mounts were modified to accept an oiling tube, which will simply splash each ball screw with oil. The manifold will be fed by a flexible tube, which will attach to the little stub coming off the manifold.
The soldering process is messy and dangerous, but once the parts are cleaned up they’re really quite beautiful.
The finished cross-slide assembly:
The Z-axis got a similar treatment:
More to come, stay tuned!