As we all know, CNC machine tools to promote the rapid development of high-speed machining technology, how to make reasonable use of CNC machine tool performance and maintain the accuracy of machine tools, it is crucial, the following is the machine in power need to pay attention to some of the details and common sense. Power supply is the energy support part of the system to maintain normal work, the direct result of its failure or failure is to cause the system to shut down or destroy the entire system. In addition, the numerical control system part of the operating data, setting data and processing programs are generally stored in the RAM memory, the system power, by the power backup battery or lithium battery to maintain. As a result, downtime is longer, unplugging the power supply or memory may result in data loss, the system can not run. At the same time, as the CNC equipment is the use of three-phase AC 380V power supply, so the safety of CNC equipment installation is an important part of the pre-work, based on the above reasons, the power supply used by CNC equipment has the following requirements: A power grid voltage fluctuations Should be controlled between + 10% ~ -15%, while China's power supply fluctuations, poor quality, but also hides such as high-frequency pulse of this type of interference, coupled with human factors (such as sudden power outage, etc.). During the peak hours, for example, about one hour before going to work or before get off work during the day, and evening, it often exceeds the tolerance by as much as ± 20%. So that the machine can not alarm and normal work, and cause damage to the machine power system. Even lead to the loss of the relevant parameter data. This phenomenon, in the
CNC Machining centers or turning centers and other machine tools have occurred, and appear more frequently, should be taken seriously. It is suggested that an AC voltage regulation power supply system with automatic compensation adjustment function should be configured in the centralized workshop of CNC machine tool. A single CNC machine tool can be separately configured with AC voltage regulator. Second, it is recommended to connect mechanical and electrical equipment to a single power supply. If other parts of the electrical equipment (eg electronic circuits, electromagnetic clutches) need to be supplied from other sources, these sources should be as far as possible taken from the components (eg transformers, transducers, etc.) that form part of the mechanical and electrical equipment. For large, complex machinery, including many machines that work together in a coordinated manner and take up more space, more than one inductive power supply may be required, depending on the configuration of the site's power supply. Unless the mechanical and electrical equipment plug / socket directly connected to the power supply, it is recommended that the power cord directly connected to the power cut-off switch power terminals. If this is not done, separate power strips should be provided for the power cables. The handle of the power cut-off switch should be easily accessible and should be installed between 0.6M ~ 1.9M above the easy-to-operate position. The maximum recommended value of 1.7M. This will allow quick power cuts in the event of an emergency, reducing losses and casualties. Third, the numerical control equipment for compressed air supply system requirements CNC machine tools are generally used a lot of pneumatic components, so the plant should be access to clean, dry compressed air supply system network. The flow and pressure should meet the requirements. Compressed air machine to be installed away from the CNC machine tools. According to the layout of the plant, the amount of gas used, should be considered to the compressed air supply system network installation of frozen air in the coal, air filters, storage tanks, safety valves and other equipment. Fourth, CNC equipment requirements for the work environment Precision CNC equipment generally have a constant temperature environment requirements, only under constant temperature conditions, to ensure the accuracy and processing machine. General ordinary CNC machine room temperature does not have specific requirements, but a large number of practices show that when the room temperature is too high, the numerical control system failure rate increased significantly. Wet environment will reduce the reliability of CNC machine tools, especially in sour wet environment, will make printed circuit board and connector corrosion, machine electrical fault will increase. Therefore, some users in southern China, in the summer and rainy season CNC machine tool environment to deal with dehumidification measures. 1, the working environment temperature should be between 0 ~ 35 ℃, to avoid direct sunlight on CNC machine tools, the interior should be equipped with a good lighting equipment. 2, in order to improve the accuracy of the processing of parts, reduce the thermal deformation of the machine, if conditions permit, the CNC machine can be installed in the relatively confined, installation of air-conditioning plant. 3, the working environment relative humidity should be less than 75%. CNC machine tools should be installed in a place away from the liquid splash, and prevent leakage of the plant. 4, away from excessive dust and corrosive gas environment.
