Aluminum cnc machining has great advantages relative to manual machining, such as CNC machining produces very accurate and repeatable aluminum parts; aluminum cnc machining can produce parts with complex shapes that cannot be done by manual machining. So what are the principle requirements.
(1) In order to ensure the accuracy of aluminum alloy cnc machining, rough and finish machining zui better be carried out separately. Because rough machining, cutting volume, the workpiece by the cutting force, clamping force, more heat, as well as the processing surface has a more significant machining hardening phenomenon, there is a large internal stress inside the workpiece, if rough, rough machining is carried out continuously, the precision of the parts after finishing will be quickly lost because of the redistribution of stress. For some parts with high machining accuracy requirements. After roughing and before finishing, should also arrange low-temperature annealing or aging treatment process to eliminate internal stress.
(2) reasonable choice of aluminum alloy cnc machining equipment. Rough machining is mainly cut off most of the machining allowance, and does not require a high degree of machining accuracy, so rough machining should be in the power, precision is not too high machine tools, finishing processes require a higher precision machine tools. Rough and finish machining are processed on different machine tools, not only can give full play to the capacity of the equipment, but also can extend the service life of precision machine tools.
(3) in the aluminum alloy cnc machining process route, often arranged with heat treatment process. Heat treatment process location arrangements are as follows: to improve the cutting performance of the metal, such as annealing, normalizing, tempering, etc., generally arranged in the mechanical processing before. To eliminate internal stresses, such as aging treatment, tempering treatment, etc., generally arranged after roughing, before finishing. In order to improve the mechanical properties of the parts, such as carburizing, quenching, tempering, etc., generally arranged in the mechanical processing after.
If there is a large deformation after heat treatment, must also arrange the zui final processing process. Correct operation and maintenance is one of the key factors in the correct use of aluminum alloy cnc machining equipment, in the correct operation and use can prevent abnormal wear and tear of machine tools, to avoid sudden failure; routine maintenance, equipment to maintain good technical condition, delay the deterioration process, timely detection and elimination of potential problems of failure, always to ensure safe operation.