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根据有关资料介绍和本人多年从事电加工机床的维修实践,数控线切割机故障率的20％～30％为元器件损坏所造成,称为硬故障。此类故障较好排除,因为它的故障现象始终如一,只要对症下药,找出损坏的元器件更换即可。而70％～80％的故障为接触不良或虚焊所引起,此类故障称为软故障。它多发生在分立元件(晶体管)所组成的线切割控制柜中。此类故障的排除较为麻烦,因为它表现为时有时无,飘忽不定。欲在成千上万个元器件中查找虚焊,如同大海捞针一样困难。如机床同时有两个以上虚焊,机床的
According to the information and I have many years engaged in the maintenance of electrical processing machine tools, CNC wire cutting machine failure rate of 20% to 30% for the damage caused by components, known as hard fault. Such failures better ruled out, because of its consistent phenomenon of failure, as long as the right remedy to find damaged components can be replaced. And 70% to 80% of the fault is caused by poor contact or Weld, such a fault is called a soft fault. It occurs in discrete components (transistors) consisting of wire cutting control cabinet. Exclusion of such trouble is more troublesome, because it shows time to time, erratic. To look for Weld in tens of thousands of components is as difficult as finding a needle in a haystack. Such as machine tools while more than two Weld, machine tools