The environmental CNC machine tool is a computer-controlled valuable automation device that requires working environment and energy.
The power supply voltage variation should not exceed +6%-1O%. It is usually required to be equipped with a dedicated power supply system (regulator) and grounding measures and away from the equipment that generates electromagnetic interference to ensure the normal operation of the CNC system; the compressed air should be degreased and dehydrated. To prevent contamination of precision parts such as grating scales. Compressed air flow should be sufficient, pressure should be stable to avoid machine tool logic error leading to automatic tool change and other faults (the machining center often fails the automatic tool change system); high-precision machine tools should enter the temperature control plant; non-tempering plant environment The temperature should also be controlled, and the high temperature in summer will significantly increase the failure rate of the control system.
Maintenance includes routine preventive maintenance and troubleshooting. A CNC machine tool failure is an event or phenomenon in which an index-controlled machine tool or system loses its specified function. The key to maintenance is that the diagnosis of the main engine part of the CNC machine can be solved by careful adjustment and careful maintenance.
Electrical faults are divided into strong electrical faults and weak electrical faults. In the high-power part, the faults such as relays, contactors, and stroke switches should be paid enough attention. The fault of the weak current part has many changes and loss of the display, servo unit, system program and parameters.
The parts that are inspected by CNC machining are generally complex in shape, and the control size is more than 100% dimensional inspection according to the routine inspection procedure, which causes long machine tool standby time and affects utilization. In view of the good dimensional consistency of the CNC machine tools, especially the positional accuracy is more easily guaranteed. Therefore, the parts that have passed the first piece of inspection can be exempted from inspection or spot check. The accuracy of the shape and size is shortened and the machine tool standby time is shortened. Even for key shape sizes such as the size of the hole. It is related to the adjustment of the tool, the repeatability of the spindle-mounted tool, and the uniformity of the tool parameters of the tool wear. The probe of the machine configuration should be fully inserted into the machine measurement program in the program to actively measure the prevention.
For mass production, it is best to use a measuring machine to measure and evaluate the process capability C. or the process capability index Cp for the critical dimensions of the part.
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