Let's start with a similar question and answer from someone who asked it on the website. Question: These two days, medium stepper speed wire cutting machine always breaks the wire, the working fluid and the wire are all new, or broken wire, how to do? Please master Pointers! It's urgent! * Answer: See how thick you cut it ~~ If thin to see if the power tube is open too much? Or the pulse width is too large, the proportion of the working fluid is right, you can easily find the general bad parts, I guess it will not be the parts damaged parts damaged parts will have noise or machining parts lost! I guess it's still the high-frequency control and if it's too bad, slow down the tracking and the number of steps. Always short circuit is also very affect the service life of the silk.

In fact, the problem is far from so simple broken wire problem has always been a serious problem in the processing of medium stepper speed wire cutting machine. It makes the processing stop and has to start from scratch, wastes a lot of working hours, destroys the integrity of the machining surface, increases the difficulty of achieving unmanned processing, and hinders the further development of the medium stepper speed wire cutting machine process. Therefore, the study of the causes of wire breakage and the methods to prevent wire breakage has always been an important topic in the research of medium stepper speed wire cutting machine technology at home and abroad. Research summary at home and abroad as early as!" In the late 1980s, experts noted that wire breakage is usually associated with an increase in short circuits, and that both wire vibration and short circuits can cause a decrease in processing speed and increase the probability of wire breakage. Subsequently,' it was found that the discharge frequency would suddenly increase before breaking the wire. ' They designed the anti-breaking wire control system at the workpiece degree!" It works well in time. Professor, University of Louven, Belgium; The proportions of left and right are distributed randomly. A test device designed to prevent wire breakage based on this precursor signal has achieved good results. The research shows that the precursor signal of different types of pulse power supply is different, and the amount that can reflect the input energy into the discharge gap will have a sudden increase before breaking the wire, in principle, can be used as the precursor signal of breaking the wire. At present, there is a medium stepper speed wire cutting machine tool device that takes protective measures according to the precursor of broken wire. Nanjing University of Aeronautics and Astronautics Special processing laboratory, through the study of the problem of broken wire, it is concluded that: the process of broken wire begins with the instability of the machining process. The machining instability promotes the discharge to be concentrated at one point. The discharge concentration causes the discharge to be dense in time, which increases the energy of the input gap and concentrates on a single point, resulting in local high temperature, resulting in the electrode filament being burned. This is the whole process of wire breakage." The direct cause of wire breakage is the increase in the thermal load of the input gap and the concentration at one point, and the cause is the instability of the process. Since the cause of broken wire is the instability of the processing process, then according to the signal of the instability of the processing process, taking effective measures to make it enter a stable state as soon as possible is the way to fundamentally overcome the problem of broken wire.

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