According to structural methods:
A, rocker type cutting machine: the punching and cutting parts are wobble rocker arm, suitable for punching and cutting of non-metallic materials such as leather, natural materials and artificial leather.
B, Longmen mobile cutting machine: punching and cutting part is a punching head that can move along the crossbeam, and the cutter die can be fixed on the punching head or on the processed object. The large and computerized control Longmen punching machine is equipped with a rotatable toolholder. It can choose corresponding tools according to the program typesetting, and of course, it needs automatic feeding mechanism.
1, the hydraulic cylinder of the hydraulic pressure cutting machine has the low speed crawling generated by the gas in the rod cavity and the rod cavity. It can achieve the purpose of exhausting by running the hydraulic cylinder repeatedly. If necessary, the exhaust device is set up in the two cavity of the pipeline or the hydraulic cylinder, and the exhaust is carried out when the hydraulic system works.
2, hydraulic cutting machine hydraulic cylinder design gap caused by improper crawling, sliding between the correct design of internal hydraulic cylinder piston and cylinder, piston rod and guide sleeve with the gap, the gap with the theory for H9 / N or H9 / F8, there are H8 / F8; according to the author's experience. The hydraulic cylinder bore and rod diameter from small to large, such as the design of clearance, for large bore (or 200mm?) and the rod diameter (more than 140mm) with the gap is the gap is too large, should be the actual process, the hydraulic cylinder of the hydraulic cylinder bore smaller phenomenon appeared, the foreign hydraulic cylinder sliding surface gap with the general design for the 0.05mm to 0.15mm, from the actual results, crawl of the hydraulic cylinder was obviously improved . The hydraulic cylinder on the large diameter and suggested the use of this method
3, cutting machine hydraulic cylinder guide element friction caused by inhomogeneous crawling, recommend using metal as a guide and support, such as QT500 - 7, ZQAL9 - 4, such as the use of non metal support ring, suggested the use of non metal support ring in the oil good dimensional stability, especially small expansion coefficient heat, in addition to supporting ring thickness, must strictly control the uniformity of size and thickness tolerances.