CNC machining of milling machine is carried out according to the instruction given by digital style. Under normal environment, the labor process does not need manual interference, and the computer gong processing eliminates the man-made deviation of the dominator. When planning to manufacture CNC machine tools, many methods are adopted to make the machine parts of CNC machine tools reach higher accuracy and stiffness. The movement equivalent of CNC machine tool worktable is widely up to 0.01 ~ 0.0001 mm, and the reverse clearance of feed drive chain and screw pitch deviation can be compensated by CNC device. The high-grade CNC machine tool adopts the closed-loop control of working table movement with grating ruler. The machining accuracy of the computer gong machine tool has improved from ± 0.01 mm to ± 0.005 mm or even higher. The positioning accuracy has reached ± 0.002mm to ± 0.005mm in the early 1990s. In addition, the transmission system and layout of CNC machine tools have high stiffness and thermal stability. Computer gongs processing decision compensation skills, CNC machine tools can get higher precision than its own. In particular, it improves the generality of the production of unified batch parts, with high qualified rate and stable processing quality. The selection of milling cutter diameter depends on different products and production batches. The selection of cutter diameter mainly depends on the specification of equipment and the processing size of workpiece.
Plane milling cutter
When selecting the diameter of the plane milling cutter, the power required by the cutter should be within the power range of the machine tool, and the diameter of the spindle of the machine tool can also be used as the basis for selection. The diameter of plane milling cutter for computer gong processing can be selected as d = 1.5D (D is the diameter of the spindle). In mass production, the tool diameter can also be selected according to 1.6 times of the cutting width of the workpiece.
end mill
The selection of end mill diameter should mainly consider the requirements of workpiece processing size, and ensure that the power required by the cutter is within the rated power range of the machine tool. If it is a small diameter end mill, whether the highest speed of the machine tool can reach the minimum cutting speed (60m / min) should be mainly considered.
Slot milling cutter
The diameter and width of the groove milling cutter should be selected according to the size of the workpiece to be processed, and the cutting power should be within the allowable power range of the machine tool. Before using the CNC machine tool, you should carefully read the machine tool manual and other relevant information, so as to correctly operate and use the machine tool, and pay attention to the following points:
(1) The PLC program of the machine tool is designed by the machine tool manufacturer according to the needs of the machine tool and does not need to be modified. Incorrect modification may cause damage to the machine tool and even damage the operator;
(2) It is suggested that the machine tool can be operated continuously for up to 24 hours. If the continuous operation time is too long, the service life of the electrical system and some mechanical components will be affected, thus affecting the accuracy of the machine tool
(3) The operators and maintenance personnel of machine tools must be professionals who have mastered the corresponding professional knowledge of machine tools or have received technical training, and must operate the machine tools according to the safety operation rules and regulations
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