Duet controlled micro mill
I've been working on this one for a couple months. Using Misumi LX20 actuators with 1mm lead ball screws driven by 1 amp, 1.8 nema 14's on x and y (10 kg of force) and a .9 nema 17 on the Z using 75 mm square, steel bar as the foundation. Tool is driven by a 150K RPM Nakanishi air spindle. The purpose of the build is high accuracy micro machining. I have just ran the first test part, a 9mm diameter sprocket, and it turned out phenomenal (inspecting it with a digital microscope). I plan to try some 3D contouring next and then find the limits in part sized using .5 and .25 mm end mills I have.
@3DPMicro very cool! Do you have a particular application in mind or just see how small you can go?
Hey Tony. The selling point for this build, to my wife, was to make custom charms (think Alex and Ani) to peddle but I was mainly thinking of 2nd ops for parts made on my Duet controlled FFF (.1 mm extrusion width squirting PEI and PEKK).
Phaedrux last edited by
Username checks out.
@3dpmicro next you need to build a tiny robot arm to lift the parts from the FFF printer to the micro mill!
3DPMicro last edited by 3DPMicro
I was able to get the motors to run over 1200 RPM (1200 mm/m travel speed) but while using my test program they stuttered when interpolating corners below a certain radius (G2/G3) with 16x ms, interpolated. Still almost silent and smooth at 8x Ms w/o interpolation. I went all over the place with Accel, and jerk with no apparent effect on the stuttering until down, around 600 mm/m. This 2.3 mm thick part took 14 minutes using a .81 mm end mill including interpolating the 6, 1 mm mounting holes. .1 mm axial DOC and 400 mm/m feed.
The demensions I can measure easily came out within .02 mm
p.s. for the record i was not actually using the bathroom when I took the picture
NitroFreak last edited by
my Duet controlled FFF (.1 mm extrusion width squirting PEI and PEKK).
I saw your old thread about the probing in a hot chamber.
How is your heated build chamber printer coming along? Can you share some pictures of that?
@nitrofreak The chamber is working well. 200 - 210c for Ultem 1010. The machine is an IDEX, has a fairly small work envelope of 100 mm cubed and is very stable mechanically and thermally so manual leveling is all that is needed. I would like to post pictures but decided not to until the Stratasys patent has expired. That was supposed to happen this year but could be extended. I am uncertain of the current status.