Hi!
This is my first post on this forum.. I've been reading alot here and on a few other forums about cnc conversions and the theory around the procedure.
I know that you should never go for starting a new thread as your first post on any forum but I think this is the best way to get help for problems with my particular project.. if someone is even interested.
This is my first CNC-project!
So to the business:
I'll be starting with a stock little micromill called "Proxxon MF70". It's designed and manufactured in Germany (not 100% sure about the manufacturing part these days but still..) so you can all figure out it's super quality machinery even though it's really tiny.
To get an idea of how small it is I'll start off by posting a picture:
That's a 1,5 litre bottle in the background and a 23mm carriage on the work table.
So as you all can figure out this thing is not intended for anything but tiny tiny pieces of work and I'm not expecting it to mill inconel super fast anyway
So for the intended modifications:
To start with:
-Some small nema 23 steppers around 0,5-1 Nm.
-Drivers? I've built a set of pminmo L297 drivers but thy will probably not be in use for long once I get everything set up and working.
-Ballscrews
-Tiny ballrails for the Y- and Z-axis (look at the pics)
-Mach 3
I do my CAD and CAM at school on UGS NX4 and SolidWorks/CamWorks 08
This is what I have to start with:
A ballscrew setup for the Z-axis and a linear module that will be the base for a new X-axis/work table. The stock MF70 table is in the pic too for comparison. The new linear module is about 20mm wider than the stock one but the Y-travel will be even a bit better with the new one because of the new y-rails that will be ordered. X travel=250mm.. around 10".
A few steppers:
I've also ordered an ATC package from USOVO in germany! + a tool lenght sensor plate, a tiny precision vice and some bits here and there. I'll post some pics of these once I get them.
I hope atleast someone is intrested in tiny machines like mine!
EDIT: I found a nice little video on youtube showing the tool changer:
[ame="http://www.youtube.com/watch?v=iv_mmuxV4wk"]YouTube - Werkzeugwechsel mit Proxxon MF70 CNC[/ame]