What is the classification of the die

Die by shape and purpose into the round die, die (die, die four (six) six square tube die die angle) and pipe die. The circular tooth is the most widely used specifications, ranging from M0.25 to M68mm. Circular die, six party dies have GB, hardware market but generally buy only round die, it is difficult to buy the six party to die, not to mention the Quartet die. The Quartet die (Figure 1) there is no national standard, manufacturers are less, and the appearance is not the same. However, the Quartet in die maintenance and installation of machinery and equipment, but very useful. For example, machine installation, thread the anchor bolt is easily damaged, only the general unit dies, dies must screwstock can wire, and screwstock is very large, and space, not anchor threading machine. At this time, as long as the circular teeth on the wheel into a square die can, and then use the wrench can be threaded. Nearly 50 units have been overhauled machines, due to improper installation, a large number of anchor bolts is damaged, with this method, the set of silk.

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