Three deadlines for use in CNC punch presses

According to the frequency of the fault generated by the CNC punching machine, the entire service life of the CNC punching machine can be roughly divided into three stages, namely, the initial use failure period, the relatively stable operation period and the end of life period.

One: initial use failure period

After the installation and commissioning of the whole machine, the operation frequency is high for half a year to one year, and it is generally irregular.

From a mechanical point of view, during this period, although the main engine has undergone trial production run-in, due to the microscopic and macroscopic geometrical deviations of the machined surface, the surface is rough before fully running in; the components are in assembly. There are also shape and position errors, which may cause large wear-in wear in the initial stage of machine tool use, resulting in excessive gap between the machine and the moving parts. In addition, because the internal stress of the new concrete foundation is not balanced and stable, it also causes some precision deviations in the machine tool. From an electrical point of view, CNC machine tool control systems and actuators use a large number of electronic power devices. These components and devices are processed in the manufacturing factory after strict screening and machine testing, but in actual operation, due to alternating load and circuit The impact of instantaneous "surge" current and back electromotive force on and off, so that some components can not withstand the initial impact, failure due to current or voltage breakdown, resulting in failure of the entire device. Generally speaking, during this period, the electrical, hydraulic system and pneumatic system have a high incidence of failures. To this end, it is necessary to strengthen the monitoring of the machine tool and periodically adjust the mechanical and electrical machinery to ensure that the various operating parameters of the equipment are within the technical specifications.