This is the first stage of troubleshooting, and it is a very critical stage. The main tasks should be as follows:
1 Inquiring about the survey When receiving the information that the failure of the machine tool site is required to be eliminated, the operator should first be required to maintain the on-site fault status as far as possible, without any treatment, which is conducive to quickly and accurately analyzing the cause of the fault. At the same time, carefully inquire about fault indication conditions, fault appearances, and background conditions of faults, and make preliminary judgments in order to determine tools, meters, drawing materials, spare parts, etc. that should be carried on site to reduce the round trip time.
2 After the on-site inspection arrives at the site, it is first necessary to verify the accuracy and completeness of various conditions provided by the operator, so as to verify the accuracy of the preliminary judgment. Due to the operator's level, there are no lack of examples of unclear or even inaccurate descriptions of fault conditions. Therefore, do not rush to handle the situation after the scene. Re-investigate all kinds of situations carefully so as not to damage the site and increase the difficulty of troubleshooting.
3 Failure Analysis According to the known fault conditions, analyze the fault types according to the fault classification methods described in the previous section to determine the troubleshooting principles. Since most of the faults are indicated, under normal circumstances, many possible causes of the fault can be listed in comparison with the CNC system diagnostics manuals and operating instructions that accompany the machine tool.
4 Determining the Cause The investigation of a variety of possible causes leads to the real cause of the failure. At this time, it is a comprehensive test for maintenance personnel on the familiarity, knowledge level, practical experience and analytical judgment ability of the machine tool.
5 troubleshooting troubleshooting may be very simple, and some failures are often more complex, need to do a series of preparations, such as the preparation of instrumentation, partial disassembly, repair parts, procurement of components and even row Therefore, the development of planning steps and so on.
