The concept of CNC machining
The working principle of a CNC machine tool is to represent various operations (such as spindle speed change, workpiece loosening and clamping, infeed and outfeed, starting and stopping, automatic coolant shut-off) and steps required in the machining process, as well as the shape and size of the workpiece, using digital codes.
Release Time:
2024-03-26
The working principle of a CNC machine tool is to represent various operations required in the machining process (such as main spindle speed change, workpiece loosening and clamping, infeed and outfeed, starting and stopping, automatic shutdown of coolant) and steps, as well as the shape and size of the workpiece, using digital codes. This digital information is sent to the CNC unit via a control medium (such as punched paper tape or disk). The CNC unit processes and calculates the input information, sending out various control signals to control the machine tool's servo system or other drive components, enabling the machine tool to automatically machine the required workpiece. Therefore, the key to CNC machining is the acquisition of machining data and process parameters, i.e., CNC programming. CNC machining generally includes the following aspects:
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(1) Analyze the drawings and determine the parts that require CNC machining;
(2) Use graphics software (such as CAXA Manufacturing Engineer) to model the parts that require CNC machining;
(3) Based on the processing conditions, select appropriate processing parameters and generate machining paths (including rough machining, semi-finishing, and finishing paths);
(4) Simulation and verification of the paths;
(5) Generate G-code;
(6) Transmit to the machine tool for processing.
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The difference between ordinary lathes and CNC lathes
The feed system of an ordinary lathe includes a feed box and an apron, and it uses the lead screw and feed rod for workpiece surface turning; CNC lathes have CNC systems, feed systems, and hydraulic systems, etc., and the processing of workpiece surface threads is carried out in machining centers. The latter is more conducive to production management.
2024-03-26
Machining parts on CNC machine tools mainly depends on the machining program. Unlike ordinary machine tools, it does not require the manufacture and replacement of many tools and fixtures, and frequent adjustments to the machine tool are not needed.
2024-03-26
The working principle of a CNC machine tool is to represent various operations (such as spindle speed change, workpiece loosening and clamping, infeed and outfeed, starting and stopping, automatic coolant shut-off) and steps required in the machining process, as well as the shape and size of the workpiece, using digital codes.
2024-03-26
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No. 217, Plant 1, Dawang Road, Menlou Street, Fushan District, Yantai City, Shandong Province
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