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What are the characteristics of CNC milling?
2019-08-19

The machined surface shape of a milling machine is generally composed of straight lines, arcs or other curves. Ordinary milling machine operators according to the requirements of the drawings. Constantly changing the relative position between the tool and the workpiece, and then matching the selected milling cutter speed, so that the tool can cut the workpiece, can process a variety of different shapes of the workpiece.

                                                              

CNC machining is to divide the motion coordinates of the tool and the workpiece into the smallest unit quantity, that is, the minimum displacement. The numerical control system moves each coordinate by a minimum amount of displacement according to the requirements of the workpiece program, thereby realizing the relative movement of the tool and the workpiece to complete the machining of the part.

In addition to the characteristics of ordinary milling machines, CNC milling has the following features:

  • The parts are processed with strong adaptability and flexibility. They can process parts with contour shapes that are particularly complicated or difficult to control, such as mold parts and shell parts.
  • It can process parts that cannot be processed or difficult to machine with ordinary machine tools, such as complex curve parts and three-dimensional space surface parts described by mathematical models;
  • Parts that can be processed in multiple processes after being able to process a single clamping position.
  • The processing precision is high and the processing quality is stable and reliable. The pulse equivalent of the numerical control device is generally 0.001mm, and the high-precision numerical control system can reach 0.1μm. In addition, the numerical control processing also avoids the operator's operation error.
  • High degree of production automation, can reduce the labor intensity of the operator. Conducive to the automation of production management;
  • High production efficiency. CNC milling machines generally do not need special process equipment such as special fixtures. When replacing workpieces, it is only necessary to call the machining program, clamping tool and tool data stored in the numerical control device, so the production time will be saved greatly. 
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