Among various machining methods, milling, turning and grinding are three machining methods that are widely used.
Milling:
From the processing of automobile engine parts to the processing of molds, smartphones and electronic parts, milling is widely used in the processing of various parts. During milling, the blank or workpiece is fixed on the processing platform, and the cutter moves according to the program setting to cut the blank or workpiece to obtain the set geometric shape, which is more suitable for processing square parts.
Turning:
Turning is also a widely used processing method, which can be used to process many kinds of parts, such as automobile shafts, precision parts of smart phones and so on. During turning, the blank or workpiece is fixed on the spindle and rotates at high speed. The tool contacts the blank or workpiece along the set path to realize cutting, which is more suitable for machining cylindrical parts.
Grinding:
It is a kind of machining method widely used in precision machining of automotive crankshaft, bearings and other precision parts. A metal surface with an accuracy of 1 micron (1/1000 mm) can be achieved. Grinding is a processing method that presses the high-speed rotating grinding wheel on the workpiece bit by bit, causing the relative movement between them, removing the workpiece as chip, and finishing it into a predetermined shape and size. Generally, the processing time is longer than milling and turning.
In addition, hard cutting materials such as cemented carbide and special materials such as semiconductor chips and ceramics can also be easily processed with hard grinding wheels. Precision grinding can also mirror polish the metal surface with an accuracy of 0.1 micron.
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