Explaining CNC Milling, CNC Turning and CNC Machining

Published: 03rd May 2011
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Computer Numerical Control (or CNC) means the automation of machine tools, for instance lathes, drill presses and screw machines, which can be found in the ‘machining’ process during which such tools cut metal components to desired dimensions. These machine tools are operated by abstractly programmed controls which are encoded onto a storage medium, one of the most regularly used examples in modern CNC production techniques being the extremley high automated CAD (Computer Aided Design) and CAM (Computer Aided Manufacture). Both of these techniques play important roles in CNC turning, CNC milling and CNC machining.

CNC machining

The usage of CNC machining, in comparison with manual machining, allows tremendously improved accuracy, productiveness, efficiency and safety as (due to reduced human interaction while using the machinery) operators are placed at a lot less risk. Furthermore, CNC machines have the ability to run unmanned for longer time periods and on the occasions of a error or problem taking place, the CNC software immediately ends its operation and pages or calls an off-site supervisor or manager. Also, CNC production permits increased pace of manufacturing as parts that would require numerous methods to manufacture otherwise may be produced speedily by the computerized equipment.

CNC turning

Turning is the process whenever a single point cutting tool is parallel with the material. The material (whether it be wood, metal, plastic stone) is then rotated and the cutting tool traverses across two axes of movement so as to generate specific absolute depths and diameters. This can be achieved on the outside of the material or if prefered within the inside (in a procedure generally known as boring) which may be employed to generate tubular components to varied required dimensions. This technique could possibly be completed manually however today it's more prevalent to employ a computer controlled and automated lathe which usually, as opposed to the manual method, doesn't require regular supervision by an operator.

CNC milling

CNC milling necessitates the usage of commands or G-codes programmed in to the milling machine together with each alphanumeric code possessing a designated function to be executed using the machine. The mills then drill and turn together axes to slice and form the material to the proportions put in to the machine. CNC milling machines can be controlled while using computer controls or the special manual overrides that are found on the front of the machine. Although the program may be the favored method of controlling the procedure, as the spindle may be programmed to create any necessary cuts, making use of the manual overrides allow the operator to hurry up and reduce speed at the appropriate time.

Natalie Eastaugh is the Internet Marketing Specialist for JDRWebsites.co.uk

If you wish to find out more on cnc milling as well as information about Breckland CNC Precision, go to Bpe-cncprecision.co.uk

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