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What Is Precision Machining?
Jul 21, 2017

  What is precision machining?

  The following are the same as the "

  Precision machining refers to the processing accuracy of 1 ~ 01μm, surface roughness and Ra01 ~ 001μm processing technology. But this precision boundary will be with the progress of processing technology and constantly changing, precision machining and today's precision machining may be tomorrow's general processing.

  Precision machining to solve the problem, one processing accuracy, including shape and position tolerance, dimensional accuracy and surface conditions; Second, processing efficiency, some processing can achieve better processing accuracy, but difficult to achieve high processing efficiency. Precision machining, including micro-processing and ultra-fine processing, finishing and other processing technology. precision machining The traditional precision machining methods are belt grinding, precision cutting, honing, precision grinding and polishing.

  (1) abrasive belt grinding is a sticky abrasive blended fabric for the workpiece processing, belonging to the scope of grinding with abrasive grinding, high productivity, good surface quality, the use of a wide range of features.

  (2) precision cutting, also known as diamond cutting tool (SPDT), with high-precision machine tools and single crystal diamond cutting tools, mainly for copper, aluminum and other non-grinding processing of soft metal precision machining, precision machining such as computer Of the drum, magnetic disk and high-power laser with a metal mirror, etc., than the general cutting precision to 1 to 2 levels.

  (3) honing, with the stone sand bar composed of honing head, under a certain pressure along the surface of the workpiece reciprocating motion, after processing the surface roughness up to Ra0.4 ~ 0.1μm, preferably to Ra0.025μm, precision machining  mainly used Processing cast iron and steel, should not be used to process the hardness of small, good toughness of non-ferrous metals.

  (4) precision grinding and polishing through the workpiece and the tool between the abrasive and processing fluid, precision machining the workpiece and the research tool for mutual mechanical friction, so that the required workpiece size and accuracy of the processing methods. Preci