Build in Progress.
My machine is a combination of the following;
Based on Sphinx 55 by Kyo Shinohara link
Inspired by Sorin Iliesu build link
Custom plates from Chris Laidlaw - Blue OX link
Openbuilds has great instructions for the Sphinx 55, so I thought I would just document the things that I did differently to add the MGN12 linear rails.
For the rails I used the following;
6 - 500mm MGN12 linear rails
2 – 250mm MGN12 linear rails
16 – MGN12H guide blocks
To attach the rails I used;
58 10mm M3 scoket head for mgn12 blocksMy 500mm rails were just a bit long I had to grind of about 1mm to make them fit between the end-plates on the c-beams. I used the slide in style t-nuts for the rails, I did not trust the twist in style with so many to fiddle with.
6 8mm M3 scoket head for x/z-axis plate mgn12 blocks
140 8mm M3 scoket head for mgn12 rail to c-beams
140 M3 t-nut for attaching rails
8 34mm M5 scoket head for anti backlash blocks with spacers
24 20mm M5 button head for plate to end of extrusion ie plate to end of c-beam
8 30mm M5 button head for thicker plate end connection on z axis
16 10mm M5 button head for 6mm plate to t-nut/slot connection
To attach and align the rails I made a small alignment jig that I attached to the c-beams to get the first rail of a pair of aligned to the c-beam. I worked my way front to back snugging the jig down then setting the rails against it a tightening down the rail bolts.
With the first rail aligned to the c-beam, I then checked the rails with an indicator. However using the jig was enough to get the first rails straight, so using the indicator may not be necessary.
Once I had the first rail straight and fixed in place I loosely installed the second with the guide blocks and end-plate. That way I could slide the end-plate to align the bearings and then sung everything up.
The front plate on the y axis c-beam will allow the side rail blocks to slide right off the front, for now I installed a few longer screw and nuts for a stop. I know that I will have to work out a better solution than this when I start to run the machine.
LINEAR RAIL SPHINX 55 (Blue OX plates)
Machine based on Sphinx 55 built with linear rails.
- Build License:
- CC - Attribution - CC BY
Reason for this BuildI wanted a small rigid machine for cutting aluminum.