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A micro milling machine is a machine tool used to machine solid materials. Unlike a drill press, which holds the workpiece stationary as the drill moves axially to penetrate the material, milling machines also move the workpiece radially against the rotating milling cutter, which cuts on its sides as well as its tip. Workpiece and cutter movement are precisely controlled to 2.5mm.
The micro milling machine may be manually operated, mechanically automated, or digitally automated via computer numerical control (CNC).
Milling machines can perform a vast number of operations, from simple (e.g., slot and keyway cutting, planing, drilling) to complex (e.g., contouring, engraving).
Since of its flexibility regarding ease of changing parameters and design, the milling machining is an optimum tool for prototyping purposes. Moreover it allows to fabricate three-dimensional macro-features and micro-features, which is important especially when dealing with interfacing the macro to the micro world. In particular, an electrical spindle motor mounted on the machine that can run at a velocity up to 50.000 rpm with a lack in concentricity less than 1μm allowing the use of micro-tools down to 25μm in diameter. The roughness that can be reached, optimizing all the parameters is around 200 nm.  

Machine specification:
Mill Frame MaterialGranite
Overall Size 20" x 22" x 22" / 500mm x 558mm x 558mm
X Axis travel12" / 300mm
Y Axis travel9" / 228mm
Z Axis travel9" / 228mm
Feedrate40 IPM / 1000mm/min
Table Size6.0" x 17.5"
Hold down provision1/4-20 Tapped holes on 1.0" centers
Drive Mechanism15mm Ball screws
THK Linear Slides w/ caged-ball technology
Spindle MotorDirect Drive
Speed5,000 - 60,000 rpm
Max Output Power350W
Air RequiredYes
Spindle AccuracyWithin 0.00004"
PowerAC 115V/230V 50-60Hz
Controller Homing Switches and Tool SensorYes
SoftwareSoftware Windows Based, ISO G&M Code
Stepping1/16 micro stepping
Height with base250 oz-in. 0.9 or 1.8 degree stepper
Resolution0.0001" / .0025mm
Power Requirements110 or 220 VAC, 50 Hz

Manuals and link

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