Fault and Classification of CNC Lathe
CNC Lathe all or part of the loss of the provisions of the function known as CNC Lathe failure.
The failure rate of the CNC Lathe varies markedly with the use of time, and its shape is shown in Figure 7.1. As the typical fault curve shape and bathtub similar, so called the bathtub curve or machine failure rate curve, it is divided into three stages. The first stage is the initial operating area, the curve is negative exponential, the machine failure rate is higher: the u stage is the effective life area of the system, the general CNC Lathe in the running 9-14 months before entering the effective life area, so the general CNC Lathe The warranty period is around 1 year. Into the effective life area of the machine has a very low failure rate; the first IQ stage for the CNC Lathe aging zone, during this period the system failure rate increases rapidly over time. This curve helps us to understand and analyze the failure of CNC Lathe.
CNC Lathe is the product of mechanical and electrical integration, advanced technology, the structure of the father complex. CNC Lathe failure is also a variety of reasons, the fault is generally more complex, which to CNC Lathe fault diagnosis and maintenance to bring a lot of difficulties. In order to facilitate the fault analysis and diagnosis of the machine, this section according to the nature of the fault, the cause of the fault and the location of the failure and other factors roughly CNC Lathe fault is divided into several categories.
Modern CNC Lathes due to the use of computer technology, software, strong, with the corresponding hardware, with a strong self-diagnostic capability.
1. boot from the diagnosis
CNC system in the power after the boot, have to run the boot self-diagnosis program, the connection of a variety of control devices to detect and find the problem immediately reported, for example, check whether the backup battery voltage requirements, if the voltage is lower than the requirements, the system will produce Alarm, the Siemens system battery alarm is i alarm, prompt maintenance personnel immediately replace the battery, if you can not replace the battery, replace the battery before the power failure.
2. Run self-diagnosis
When the CNC Lathe is running, the CNC system monitors the operation of the machine at all times. CNC device on the servo system, PLC system to monitor the operation, if the problem found in a timely manner alarm, and many failures will be displayed on the screen alarm information. In the machine running, PLC device through the machine tool manufacturers to prepare the user program, real-time monitoring of the operation of CNC Lathes, if found fault or issued instructions not executed, the corresponding signal will be transmitted to the CNC device, the CNC will be displayed on the screen Alarm information.