Sherline Mill CNC Kit with High-Torque Stepper Motors
Facilitates custom CNC setup integration
Includes 4-axis driver box and power supply
Features high-torque NEMA #23 motors
Allows 4th-axis rotary table expansion
Supports user-chosen control software
The Sherline Mill CNC Kit with High-Torque Stepper Motors is designed for individuals who wish to utilize their own computer and software for CNC milling operations. This kit facilitates the integration of personal computing systems with Sherline's CNC-ready mills, providing a flexible solution for custom setups. The package includes a 4-axis driver box, connecting cables, a power supply, and three high-torque stepper motors. These motors, which share the NEMA #23 frame with standard stepper motors, offer significantly enhanced torque, exceeding standard models by over 75%.
To set up the system, users need to connect the 25-pin parallel cable from the driver box to their computer's printer port. The stepper motors are then attached to the mounts on the X, Y, and Z axes of the Sherline CNC-ready mill. Once the X, Y, and Z cables are connected from the driver box to the stepper motors, the system is ready for operation with the user's chosen control software. For those interested in expanding their milling capabilities, the kit allows for the addition of a 4th-axis rotary table, which can be integrated by connecting it to the designated axis A port.
This kit is ideal for users who prefer a customizable CNC milling setup, offering the flexibility to select and install their own software while benefiting from the robust performance of high-torque stepper motors. The inclusion of essential components such as the driver box and power supply ensures a seamless integration process, making it a practical choice for both hobbyists and professionals seeking a tailored CNC milling experience.
1x Driver box with 4 motor cables
1x 3.7 amp, 24-volt power supply with cord
1x 25-pin parallel cable
2x CD set with Linux/EMC2, utilities, and instructions
Two CDs with Linux/EMC2, utilities, and instructions
Two spare fuses
Minimum computer requirements: Processor speed of 800 MHz or faster (Pentium III class or equivalent), RAM of 512 MB (Sherline provides 1 GB), Hard drive of 20 GB or larger, 25-pin parallel port (printer port)
Power supply input: 100-240 VAC, 47-63 Hz, 3A (automatically adapts to incoming voltage)
Output: 24 VDC, 4A
Logic high levels should exceed 2 volts
Logic low should be less than 0.5 volts
Step pulses are active low
Step pulses should be at least 22 microseconds long
DB25 pinout: 1 – Input from LinuxCNC, 2 – X Direction, 3 – X Step, 4 – Y Direction, 5 – Y Step, 6 – Z Direction, 7 – Z Step, 8 – A Direction, 9 – A Step, 10 – NC, 11 – Output to LinuxCNC, 12 – Output to LinuxCNC, XYZ home, 13 – NC, 14 – Input from LinuxCNC, C1, 16 – Input from LinuxCNC, C2, 17 – NC, 18-25 – Ground
Headers on PC board: H1 – Reduces current to 1/4 after 3 seconds, H2 – Unimplemented, H3 – Removes power from drivers immediately (panic stop), RESET – Holds the drivers in reset condition
Motor connectors: 5-pin DIN male, Five to 30 volts (better performance at higher voltage), 2 amp unipolar configuration, 800 steps per revolution (microstepping), equates to 16,000 steps/inch with 0.050″ pitch leadscrew
