CNC machining is a popular process for a range of machining applications, it stands for ‘Computer Numerical Controlled’ which means the machine is programmed to perform certain functions to fabricate a certain component without much human intervention. The material, which could be metal, plastic, glass, wood, or composite material undergoes a range of subtractive manufacturing processes to achieve a finished part which is then used in a wide range of industries including medical, aerospace, industrial, oil and gas, hydraulics, firearms, and more.
The advantages of using CNC machining include increased productivity, improved cycle times, accuracy and most of all consistency, as the human factor is almost eliminated.
What are the five most common types of CNC machining?
CNC Lathes and Turning Machines
As the name indicates, the materials within these machines can ‘turn’ or rotate around the linear cutting tools to remove material around the circumference to achieve a certain diameter and features.
This technique is used to create internal and external features on the component: drilled holes, bores, broaches, reamed holes, slots, tapping, tapers, and threads.
CNC Milling Machines
These machines can rotate cutting tools while holding the workpiece stationary, which enables it to produce various shapes including both face-milled and peripheral milled features.
The output is usually square or rectangular with a range of features.
CNC Laser Machines
Their pointed and focused beam allows them a higher precision cut which is used for projects involving slicing and engraving.
This technique has a versatile output that may not require any additional finishing steps.
CNC Electrical Discharge Machines (EDM)
Through highly controlled electrical sparks, CNC EDM machining can manipulate materials into the desired shape. It is referred to sometimes as spark eroding, die sinking, spark machining or wire burning. The material is placed under an electrode wire, and the CNC machine emits an electrical discharge from the wire to produce heat which melts the material to produce the final output as required after flushing.
This technique is used in the production of precise micro holes, slots, tapered or angled features and more complex features.
CNC Plasma Cutting Machines
This technique involves a high-powered plasma torch that melts through the workpiece to cut through a workpiece, which has to be electrically conductive such as steel, stainless steel, aluminium, brass or copper.
CNC Machining In Sydney
Ogis Engineering is a leading precision CNC machining provider based in Sydney to cater to projects Australia-wide. We pride ourselves to provide a wide range of production capabilities for components and finishing in our manufacturing facility in Milperra. If you need to discuss your upcoming project with our metal fabricators and engineers, contact us today. No project is too small or too big for us.