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What is the use of die method
Dec 24, 2017

What is the use of die method

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 D mm, diameter within the die plate. At M0.8 = 0.55 mm, pitch 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 the actual production, the diameter of die wear caused by 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 of 0.8 mm, 02^0.03 mm in diameter to increase general 0-.

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