A pre-programmed computer software is used to dictate and control the movement of machinery and factory equipment. As CNC machines are has a great accuracy, three-dimensional cutting tasks can be done with just a single set of instructions.
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When to use CNC Machining?
Companies who produce their products into separate batches choose CNC machining because of its accuracy and repeatability from metal to plastic materials, not to mention that it produces product parts with excellent mechanical qualities.
Companies have the choice between different CNC milling such as 3-axis and 5-axis machining.
Pros of CNC Machining
One of the greatest advantages of CNC machining over other 3D printing technology is its accuracy and repeatability. When it comes to the production of separate batches of the same products, CNC machining is very reliable due to its high level of accuracy in variable repeatability. Also, it produces high-quality products with excellent mechanical properties.
Cons of CNC Machining
Unlike 3D printing, CNC machining has a greater geometry restrictions because CNC machining is a subtractive manufacturing process whilst 3D printing is additive.
Another thing that is noticeable with CNC is that unlike 3D printing that can print alone without supervision, CNC requires an operator.
Most companies choose CNC machines over manpower to get jobs done faster and more efficiently. If a same job is to be done individually by humans and these machines, the likelihood to have the job done faster and efficiently is higher for the CNC machines than that of humans because the machines' process is more precise that margin for human errors is eliminated.