A precision punch press using a crankshaft mechanism is called a crankshaft precision punch press, and most mechanical precision punch presses use this mechanism. The reason for using the crankshaft mechanism the most is that it is easy to manufacture, can correctly determine the lower end position of the stroke, and the slider activity curve is basically practical for various machining. Therefore, this type of stamping is widely used for punching, bending, stretching, hot forging, warm forging, cold forging, and almost all other precision punching processes