CNC milling
The CNC milling is one of the cutting Production methods and is based on the use of automated CNC machine tools that produce workpieces with high precision using modern control technology.
Milling with CNC machine tools is nowadays used primarily in the metal processing industry and allows users to manufacture inexpensive workpieces with the highest demands of accuracy and complexity. CNC milling machines are able to realize cutting speeds of up to 10,000 revolutions per minute and thereby achieve economic advantages in particular in series production. The CNC milling is not limited to metal processing, but is also used in plastic and wood processing.
Technical basics of CNC milling
The cutting process milling allows the production of workpieces with a certain geometric shape. A milling cutter is used which continuously removes material from a raw part. During chip removal, the milling cutter rotates at high speed about its own axis, while either the tool or the workpiece is moved according to the contour to be produced.
CNC milling company BOSTECH s.r.o.
In CNC milling, the user makes use of the Computerized Numerical Control (CNC) technique. The desired workpiece contour can be first constructed using a CAD program and then transferred to a CNC software using a CAM system taking into account parameters such as the speed, the feed or the cutting depth. Modern CNC milling machines have up to six machining axes, of which three axes are used as main axes and three axes are used as auxiliary axes.
Variants in CNC milling
In principle, experts in CNC milling distinguish between the counter-running milling and the direct-running milling depending on the direction of running of the CNC milling. During counter-running milling, the milling cutter rotates against the feed direction of the workpiece, whereby a thickening chip is produced during cutting. During counter-running milling, the expenditure of force increases sharply from the entry of the cutting edge to the exit, resulting in a strong pressure and the cutting edge is affected by wear. The counter-running milling is therefore particularly suitable for workpieces with hard edge zones.
CNC Milling Company Schüco International KG
In climb milling, the cutting edge rotates in the feed direction of the workpiece, resulting in the highest force at the moment of entry. Climb milling enables the production of very smooth surfaces and is therefore used when high surface quality is required.
In addition, depending on the tool geometry, a distinction is made between different variants of the CNC milling. The most important manufacturing processes include:
- CNC machining
- CNC milling
- CNC screw milling
- CNC profile milling
- CNC mould milling
- CNC cutting
CNC machining of Schüco International KG
CNC milling - Benefits
The CNC milling allows the user to produce geometrically complex parts in a cost-effective, automated and largely reproducible manner. Overview of the main advantages of CNC technology:
CNC milling company ZERNat Mechatronik GmbH
- Precision:
CNC milling machines work with a precision that cannot be achieved in manual production. The shape and dimension tolerances of a CNC machine meet the highest requirements. - Material:
CNC machine tools work very efficiently and hardly waste material. The production costs can thereby be reduced. - Personal:
Thanks to the high degree of automation, personnel costs can be significantly reduce compared to manual production. - Product range:
CNC machine tools are technically capable of a wide range to produce various components.
What materials are used in CNC milling?
In principle, milling machines can work with all materials that can be machined. In addition to classic steel or aluminum alloys, these also include many other metals as well as plastic and wood. The most important materials that can be processed with a CNC milling cutter:
- Steel and steel casting
- Aluminium and aluminium casting
- Titanium
- Gold
- Silver
- Bronze
- brass
- Plastic
- Wood
Which machines are used for CNC milling?
Modern CNC machining centers are able to carry out the complete manufacturing process from clamping the workpiece via milling, tool change and providing cooling lubricant to quality control and post-processing independently and without personnel.
Modern CNC machines not only work with three main axes, but also have three additional auxiliary axes. This enables the production of very complex geometries with the highest requirements for accuracy of measurement and shape. Typically, CNC machining centres are developed in modular design for the individual needs of the customer.
Modern CNC milling machine from gloss matrix gmbh
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