CNC Drawing Machine

Abstract

Computer numerical control (CNC) machining is a term commonly used in manufacturing and industrial applications. Most of the manufacturing company used industrial robot for much production. The aim of this project is show how a CNC machine work and building a mini CNC based drawing and writing machine using Arduino, CNC shield and other open source software and firmware. It works in 3- axis X, Y and Z. Universal Gcode Sender used to send G-Codes to the Arduino board. Arduino generate signal and control motion for stepper motors with the help of Grbl interpreter. Motor driver help the stepper motor to move 2-axis (X and Y) in five micro stepping level and Its travel the exact defined position. Trapezoidal threaded rod attached with the motor. Using motor rotational power, it travels X and Y axis smoothly and a servomotor attached with the pen. When servomotor up pen goes to the rest position when it down pen touch the paper surface and do work like a human hand writing. CNC shield have some function like Emergency-STOP, Resume, Hold and many others. This CNC drawing machine work like a CNC milling machine. It can draw any design following the bitmap. In this paper I will describe more about CNC drawing machine which is work like CNC milling machine.