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    Brief of CNC (Computer Numeric Controlled) Machining, Milling or Turning

    Brief of CNC (Computer Numeric Controlled) Machining, Milling or Turning

    CNC (Computer Numeric Controlled) Machining, Milling or Turning utilizes automated machine tools that are operated by computers rather than being manually controlled or mechanically automated via cams alone. "Milling" refers to a machining process where the workpiece is held stationary while the tool spins and rotates around it. "Turning" occurs when the tool is held stationary and the workpiece spins and rotates.

    Using CNC systems, component design is automated using CAD/CAM programs. The programs produce a computer file that generates the commands needed to operate a particular machine, and then loaded into the CNC machines for production. Since any particular component might require the use of a number of different tools modern machines often combine multiple tools into a single "cell". In other cases, a number of different machines are used with an external controller and human or robotic operators that move the component from machine to machine. In either case, the complex series of steps needed to produce any part is highly automated and can repeatedly produces a part that closely matches the original design. 

    Since CNC technology was developed in the 1970s, CNC machines have been used to drill holes, cut designs and parts from metal plates and do lettering and engraving. Grinding, milling, boring and tapping can also be done on CNC machines. The primary advantage of CNC machining is that it allows for greatly improved accuracy, efficiency, productivity and safety over other forms of metalworking equipment. With CNC machining equipment, the operator is placed less at risk and human interaction is significantly decreased. In many applications, CNC equipment can continue to operate unmanned over the weekend. an error or a problem occurs, the CNC software automatically stops the machine and notifies the off-site operator.

    The advantages of CNC Machining:

    1. Efficiency Aside from the need for periodic maintenance, CNC machines can operate almost continuously. One person can oversee the operation of several CNC machines at a time.

    2. Ease of Use CNC machines are easier to use than lathes and milling machines and greatly reduce the likelihood of human error.

    3. Easy to upgrade Software changes and updates make it possible to expand the machine's capabilities rather than replace the whole machine.

    4. No prototyping New designs and parts can be programmed directly into a CNC machine, eliminating the need to build a prototype.

    5. Precision Parts made on a CNC machine are identical to each other.

    6. Waste reduction CNC programs can plan the layout of the pieces to be machined on the material to be used. This allows the machine to minimize wasted material.

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