Girl with a dragon for CNC

thingiverse

The text appears to be an excerpt from Wikipedia article about Computer Numerical Control (CNC) systems and their history, description, and applications. Here's a breakdown of the content: **History** * The first NC machines were built in the 1940s and 1950s based on existing tools modified with motors. * These early servomechanisms were rapidly augmented with analog and digital computers. **Description** * CNC machines control multiple axes (at least two) and a tool spindle that moves in the Z (depth). * Direct-drive stepper motors or servo motors provide highly accurate movements. * Commercial metalworking machines use closed-loop controls for accuracy, speed, and repeatability. **Parts Description** * The mills themselves have evolved to enclose the entire mechanism in a large box as a safety measure. * Most new CNC systems are 100% electronically controlled. **CNC-like Systems** * CNC-like systems are used for any process that can be described as movements and operations, including laser cutting, welding, friction stir welding, ultrasonic welding, flame and plasma cutting, bending, spinning, hole-punching, pinning, gluing, fabric cutting, sewing, tape and fiber placement, routing, picking and placing, and sawing. **Examples of CNC Machines** * Mill: Translates programs to move the spindle or workpiece to various locations and depths. * Lathe: Cuts workpieces while they are rotated. * Plasma cutter: Cuts materials using a plasma torch. * Electric discharge machining (EDM): Removes material from the workpiece using electrical discharges. **Other Applications** * Multi-spindle machine: Type of screw machine used in mass production, considered to be highly efficient by increasing productivity through automation.