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What are the commonly used G-codes in precision parts machining

CNC machining is a high-precision and high-efficiency machining technology widely used in various manufacturing industries in precision parts processing. In the CNC machining process, G-code is a digital control instruction used to control the motion of the machine tool and the machining of the workpiece. Here are some commonly used G-codes in CNC precision machining:

G00: Quick positioning. G00 is used to control the rapid movement of machine tools between workpieces to accelerate machining speed.

G01: Linear interpolation. G01 is used to control the machine tool to perform interpolation motion on a straight path, achieving linear machining.

G02/G03: Arc interpolation. G02 and G03 are used to control the machine tool to perform interpolation motion on the circular arc path, achieving circular arc machining. G02 is used for clockwise interpolation, and G03 is used for counterclockwise interpolation.

G04: Program pause. G04 is used to pause for a period of time during the machining process in order to perform other operations such as tool replacement.

G17/G18/G19: Select the work plane. G17 is used to select the XY plane, G18 is used to select the XZ plane, and G19 is used to select the YZ plane.

G20/G21: Switch between Imperial and Metric Systems. G20 is used to switch to imperial units, G21 is used to switch to metric units.

G28/G30: Reference point positioning. G28 is used to quickly move the machine tool to the reference point, and G30 is used to move the machine tool to the predetermined position.

G40/G41/G42: Tool radius compensation. G40 is used to cancel tool radius compensation, G41 is used for left tool radius compensation, and G42 is used for right tool radius compensation.

G54-G59: Selection of working coordinate system. G54-G59 is used to select different working coordinate systems to adapt to different processing requirements.

G90/G91: Absolute/Incremental Programming. G90 is used for absolute programming, while G91 is used for incremental programming.

When precision parts are machined, using and setting these G codes correctly according to specific machining requirements can improve machining efficiency and quality. At the same time, it is necessary to understand more G-code instructions according to the different machine tools and processing objects to meet different processing requirements. I hope this information will be helpful for you in CNC precision machining, enabling you to better utilize and master this advanced machining technology. If you have more questions or need further understanding, you can consult professionals or refer to relevant materials. Wishing you success in CNC precision machining!

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