About Steps Per MM Calculator (Formula)
A Steps Per Millimeter (Steps Per mm) Calculator is a tool used in the field of 3D printing and CNC (Computer Numerical Control) machining to determine the number of steps that a stepper motor needs to take to move a specific distance in millimeters. Stepper motors are commonly used in these applications because they allow precise control of movement. To achieve this precision, it’s essential to calculate the correct number of steps needed to move a certain distance. The formula for calculating Steps Per mm is as follows:
Steps Per mm (SPMM) = (Total Steps per Revolution (TSR)) / (Linear Travel per Revolution (LTR))
Where:
- Steps Per mm (SPMM) is the number of steps required to move the axis of the machine by one millimeter.
- Total Steps per Revolution (TSR) is the total number of steps that the motor completes in one full revolution.
- Linear Travel per Revolution (LTR) is the distance that the axis moves along the linear path during one full revolution of the motor shaft.
To calculate Steps Per mm accurately, you need to know the specifications of your stepper motor and the mechanical components of your 3D printer or CNC machine. TSR is determined by the motor’s step angle (usually 1.8 degrees for most common stepper motors) and the microstepping settings (e.g., 1/16 microstepping). LTR depends on the mechanical setup of your machine, including the pitch of the lead screw or the circumference of the pulley.
Steps Per mm Calculators are crucial for configuring 3D printers and CNC machines correctly, ensuring that they can move accurately and produce precise results. By using this calculator, you can customize your machine’s settings to match your specific requirements and achieve the desired level of accuracy in your prints or machining operations.