Grinding is a machining process. In machining, material is separated from the workpiece in the form of chips with the aid of a cutting tool. Other machining processes are turning, milling or drilling.
Grinding is used to finish a workpiece, so it is usually the last step of machining after milling or turning. Like honing and lapping, it is a machining process with geometrically indeterminate cutting edges consisting of the edges of many tiny crystals. In grinding, the abrasive grain is firmly bonded.
With modern CNC machines, however, the machining processes can often no longer be sharply distinguished from one another. High-speed milling, for example, already achieves surface qualities almost as high as grinding machines. On the other hand, creepfeed grinding machines can partially replace milling or turning.
Grinding achieves very high precision and surface quality and is suitable for both aluminum and hard materials such as hardened steel.
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