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Using The Method Of Die
Dec 30, 2017

With the wafer die when processing thread is half cutting half squeezing state. As the diameter of cutting part die diameter and die diameter, especially to bear large cutting force, it should have the strength and cutting ability. Taking into account the screw and the screw hole with the die cut out should have a certain gap, and taking into account the amount of wear, so die design, should make the diameter and diameter less than in diameter, the diameter of the thread in nominal size. D jmM0.8 =0.584 thread diameter mm diameter D = 0.55 mm within the die plate, M0.8 thread diameter D =0.67 mm in diameter, die should be m.x= D in 0.67 mm, 0.67 mm is generally determined in 0.66. In actual production, because the diameter of die wear caused by the scrap rarely, so in the design of the diameter of the wear volume can be smaller. But if the size is too small, then push the pressure screw will get increased, so die diameter should not be too small. The outer diameter of the thread is by cutting metal in die extrusion of plastic deformation and. In order not to block the metal workpiece broken, die diameter should not participate in the work, to leave a gap between it and cut. Such as cutting die M0.8 thread, minimum diameter is 0.8 mm and the average diameter to increase 0- 02^0.03 mm.

Die nut is equivalent to a high hardness, there are several holes made around the chip die hole, both ends of the screw in the grinding cutting cone. When the thread processing the size out of tolerance, can die adjustment on the groove cut, in order to adjust the thread diameter. The die can be installed in diestock by manual thread processing, also can be mounted on the die frame used in machine tools. Thread precision machined die is low, but due to the simple structure and convenient use, in single and small batch production and repair is still widely used in die.

Classification:

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 range is M0.25 ~ M68mm. circular plate teeth, die six party countries have national standard, the market generally only buy hardware but dies, it is difficult to buy the six party to die, let alone die. Because the Quartet Quartet dies 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, installation machine, thread the anchor bolt is easily damaged. The general unit only circular teeth, tooth plate must screwstock can wire, and screwstock is very large, and space, not at the anchor wire machine. At this time, as long as the circular screwing into a square plate on the wheel The teeth can, and then use an active wrench to cover the silk.





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