Introduction: It mainly describes several commonly used CNC maintenance methods, including PLC input and output class recording method, hard disk backup method, spare parts quick replacement method, key point maintenance method and defect improvement method. The basic methods of numerical control transformation include PLC, commercial CNC, industrial computer and PC-based NC.
The following is divided into two aspects of CNC maintenance and transformation, and describes the basic methods for your reference.
1 Basic method of CNC maintenance
1.1 "Collective consultation" law <br> <br> presided over by a competent person assembling the personnel aspects of technology, equipment, operation, etc. for consultation, everyone mention individual programs, one by one investigation to resolve. This method is often used in foreign companies.
1.2 PLC input and output point recording method (PLC I/O LED photo record)
In the past maintenance, we found that many equipment failures occurred when the machine was turned on. In fact, there is no hardware failure in the device, which is often caused by improper operation or other reasons. Although the fault is not big, it is troublesome to find. To this end, we used a digital camera to take pictures of the I/O indicators on the PLC at normal times and print them out next to the PLC. In this way, once a similar problem occurs, the maintenance worker can quickly find the problem by comparing the photos, and sometimes the operator can find the problem accordingly. The advantage of using a digital camera is that it can be saved in a microcomputer for easy classification management and long-term storage. This kind of photo recording comparison method, we also use on some adjustable valves, limit switches and mechanical positioning devices, which play a very good role in guiding operation and maintenance.
1.3 Hard disk backup method (hard disk backup)
Many existing devices use an industrial microcomputer as a host computer control device or a human-machine interface. More than 80% of microcomputer failures are software failures. In the past, software failures often required professional computer technicians to come to the repair. It was generally a re-installation of the system, which was very time consuming. The hard disk backup method we use now is to pre-purchase a new hard disk that is the same as or similar to the original one. Use Ghost or similar software to copy all the hard disk data of the original machine, including the system, to the new hard disk as a backup. In the event of a software failure, simply replace the backup drive with a short change in repair time. It also prevents real hard drive damage. This kind of work can be done by a general maintenance worker.
1.4 spare parts rapid replacement method (spare parts rapid replacement)
Due to the rapid development of electronic components, some electrical spare parts have been updated quickly. High-tech products such as inverters have been updated for almost two or three years. Therefore, it is difficult to purchase the same type of spare parts when purchasing spare parts, and sometimes it is possible to purchase products of different companies. For the replacement of these spare parts, the general maintenance workers have certain difficulties, especially like the inverter. If you change the products of different manufacturers, not only the hardware wiring is different, but also the parameter settings are different. In order to ensure that the repairman can accurately and quickly replace, we will send a direct replacement operation flow chart and parameter setting table to each maintenance worker according to the technical parameters of the existing inverter and spare parts library. Next to the field inverter. Similar methods are used for other complex spare parts, which effectively shortens the replacement time of spare parts.
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