Application Analysis of Imported CNC Machine Tools

Imported CNC machine tools have been widely used in the machining industry, especially in the oil pump nozzle industry, due to their remarkable high precision and high efficiency in machining. However, in the use of imported machine tools, the problem of serious shortage of maintenance spare parts is faced, resulting in a long fault repair cycle, which makes the production unable to proceed normally, and the production efficiency is reduced. The original intention of selecting imported machine tools cannot be achieved. In order to change the status quo, let the import The machine tool restores its high precision and efficiency, and it is a very effective, practical and sustainable way to carry out localization of imported equipment.

Yituo Company is a company that produces oil pump nozzles. With the development of production, CNC machine tools and high-efficiency precision equipment are used more and more widely. In the early 1990s, Yituo Company introduced three U80 grinding machines from Swedish UVA company. It is used to machine the middle hole and seat surface of the needle body of the injector PB86J. The process requirements are extremely strict: the roundness is required to be within 0.5 μm, the cylindricity is required to be within 0.8 μm, the surface roughness value is required to be below 0.4 μm, and the ground parts can be directly mated. The grinding rod of the machine tool is directly mounted on the electric spindle. Therefore, the running precision of the electric spindle is extremely high. The rotation speed of the electric spindle is required to be 100000r/min, which is driven by the inverter. The machine is highly efficient and has a single machining time of 50 s, which is the key equipment to ensure production. Due to the use for many years, the fault has increased significantly in recent times, especially the inverter that drives the electric spindle, the operation is extremely unstable, and it has reached a high period of failure. The inverter cannot be repaired due to various objective conditions. The original equipment inverter has been eliminated, no spare parts are supplied, and the purchase of substitute products is expensive. Each unit needs about RMB 200,000, and the supply period is long, which seriously restricts the smooth progress of production and must be reformed.

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UPVC Cutting Machine

uPVC profile cutting machine is major and essential equipment for manufacturing uPVC windows and doors. Cutting is the beginning of making uPVC windows, and one of most important manufacturing procedures in the whole window manufacturing process. The cutting accuracy (such as accuracy error of cutting length, accuracy error of cutting angle) will affect the welding accuracy and welding strength of uPVC windows, and then affect the size accuracy and angle accuracy of finished uPVC windows. STONE Window Machinery guarantees the cutting quality of the uPVC profile cutting machine through use of high quality hard-alloy saw blades, high accuracy liner bearing motional pairs and headstock, and other high quality machine components, and through our strict quality control system. uPVC profile cutting machines mainly includes double mitre saw, V-notch saw, glazing bead saw, and so on.