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The shape of the machined surface of the milling machine is generally composed of straight lines, arcs, or other curves. Ordinary milling machine operators according to the requirements of the drawing. Constantly changing the relative position between the tool and the workpiece, and then cooperating with the selected milling cutter speed, the tool can cut the workpiece, and various shapes of workpieces can be processed.
CNC machining is to divide the motion coordinates of the tool and the workpiece into the smallest unit, that is, the smallest displacement. According to the requirements of the workpiece program, the numerical control system moves each coordinate by several minimum displacements, to realize the relative movement of the tool and the workpiece to complete the machining of the parts.
In addition to the characteristics of ordinary milling machine processing, CNC milling has the following characteristics:
Compared with ordinary milling machines, CNC milling machines have the characteristics of high machining accuracy, complex shapes of machined parts, and wide machining ranges. According to the characteristics of CNC milling machines, the contents suitable for CNC milling machine processing mainly include the following categories: Complex structures such as curved contours or curved surfaces: the plane curve contour of the workpiece, which refers to the complex curve of the inner and outer contours of the part, and the processed surface is parallel or perpendicular to the level. When CNC milling, generally only need to use the two-coordinate linkage of the three-coordinate CNC milling machine to process them.
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