Compared with manual machining, CNC machining of aluminum alloy has great advantages, such as aluminum alloy parts produced by CNC machining are very accurate and repeatable; CNC machining of aluminum alloy can produce parts with complex shape that cannot be completed by manual processing. What are the principles of CNC processing of aluminum alloy?
Compared with manual machining, CNC machining of aluminum alloy has great advantages, such as aluminum alloy parts produced by CNC machining are very accurate and repeatable; CNC machining of aluminum alloy can produce parts with complex shape that cannot be completed by manual processing. What are the principles of CNC processing of aluminum alloy?
CNC machining robot
(1) In order to ensure the CNC machining accuracy of aluminum alloy, roughing and finishing should be carried out separately. During rough machining, the cutting amount is large, the cutting force and clamping force on the workpiece are large, the heat generation is more, and the machining surface has obvious work hardening phenomenon. There is a large internal stress in the workpiece. If the rough machining and rough machining are carried out continuously, the precision of the parts after finishing will be lost quickly because of the redistribution of stress. For some parts with high machining accuracy. After rough machining and before finishing, low temperature annealing or aging treatment should be arranged to eliminate internal stress.
(2) Reasonable selection of CNC processing equipment for aluminum alloy. Rough machining is mainly to cut off most of the machining allowance and does not require high machining accuracy. Therefore, rough machining should be carried out on machine tools with high power and low precision, while the finishing process requires high-precision machine tools. Rough machining and finish machining are processed on different machine tools, which can not only give full play to the equipment capacity, but also extend the service life of precision machine tools.
(3) Heat treatment process is often arranged in CNC process of aluminum alloy. The arrangement of heat treatment process is as follows: in order to improve the cutting performance of metal, such as annealing, normalizing, quenching and tempering, it is generally arranged before machining. In order to eliminate internal stress, such as aging treatment, quenching and tempering treatment, it is generally arranged after rough machining and before finishing. In order to improve the mechanical properties of parts, such as carburizing, quenching, tempering, etc., they are generally arranged after machining. If there is large deformation after heat treatment, Zui finishing process must be arranged.
The correct operation and maintenance is one of the key factors for the correct use of aluminum alloy CNC processing equipment. In the correct operation and use, it can prevent abnormal wear and tear of machine tools and avoid sudden failure; in daily maintenance, the equipment keeps good technical status, delays the deterioration process, timely finds and eliminates the hidden trouble, and ensures the safe operation
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