Watch the video of the Mill-it-Mini CNC milling machine to see actual drive performance without any backash software compensation.
Watch the video here to see actual drive performance
Each axis is cycled through a 9mm stroke
No backlash compensation settings were used
The axes were calibrated and then tested
The video shows actual mechanical drive performance
All three axes are shown to be within 0,01mm
Read below to see how to achieve this performance
NEMA 23 Motors
We offer the Mill-it-Mini CNC milling machine system with 1NM and 2NM NEMA 23 motors
Motor removal is hassle free and fast
The motors are IP54 rated with fitted cable-glands
Significantly improved cable management and motor protection
Motor replacement takes 2 minutes
Future upgrades to closed loop systems made easy
Custom precision machined motor mounts
The motor mounts that couple the stepper motors to the ballscrews in the Mill-it-Mini CNC milling machine are custom cast LM25 parts and precision CNC machined before installation. All Datum surfaces are made on CNC machining centre
A vertical machining centre (VMC) machines all datum surfaces
The motor mount holes, motor seating profile, structural mounting holes and thrust bearing insert pocket are all machined in one operation on the VMC
This ensures precision alignment between the motor, coupler, ballscrew and slides.
The motor seating profile machining ensures radial motor alignment
High siffness core frame design
The Mill-it-Mini CNC milling machine’s core carcass is an LM 25 cast base with a Steel spine.
Custom designed LM25 cast base
All mounting surfaces precision machined
Welded steel spine – optimally welded for symmetrical cooling of weld joints
Steel spine and cast base form a rigit core machine structure
Double contact thrust bearings
In order to generate high milling forces you must lock the ballscrew in the direction of movement. The Mill-it-Mini CNC milling machine has two double angle contact bearings on each axis.
Ballscrew is custom machined to sit in a double angle contact thrust bearing
The outer race is held with a preload in the custom cast mount
The result is a very rigid end condition
100% isolation of the motor from the feed force during machining
Thrust setup ensures no unwanted play or mechanical movement whatsoever in the direction of movement
Height adjustable 43mm mounting collar
The spindle mount is a 43mm mounting collar
Aluminium collar can be moved to change the height position of the spindle on the Z axis
Allows long cutters and work pieces to be accommodated
compatible with most 43mm mountable CNC accessories
Ballscrew drive system
A ballscrew is the best method for drive performance in a CNC milling machine and the Mill-it-Mini has a ballscrew on each axis.
The Mill-it-Mini is driven in all three axes by ballscews and ballnuts
A ballscrew drive is the most effective, efficient, and accurate way to drive a CNC system
The results is a drive system able to maintain positional accuracy when under machining loads down to 20 microns (0.02mm)
Ballscrews are very sensitive to alignment and setup. All the mounting surfaces are machined as datum surfaces on a precision vertical milling machine.
Therefore all alignment surfaces are made to very tight tolerances ensuring the ballscrews and ballnuts are perfectly aligned
Please Click Here click here and see the section on ballscrews for more information
High power industrial electronics
The control system controlling and driving the Mill-it-Mini Desktop CNC milling system is a very high spec industry standard controller.
These controllers and drives are industry standard and have been in our systems for years
The controller has a no volt release safety circuit – required for CE
EMC mains AC filter and industrial standard connectors fitted as standard
You can use the same control system as we use in the Mill-it-Mini to run a half sheet sized CNC router system
Industrial grade software and controller
We supply the Mill-it-Mini CNC milling machine with very robust and easy to use control software.
The video here shows the machine operation tutorial under UCCCNC control
The UCCNC controller is a fully windows compatible USB controller
We use the UCCNC controller on all our systems
Reliable, robust, and symmetrical pulse train generation for the motor amplifiers
The UCCNC software, USB 2.0 controller, and the industrial drive electronics give the Mill-it-Mini commercial production spec performance