In recent years, no matter from the technical aspect or from the scale aspect, the milling machine industry has made great progress, which shows that the pressure vessel industry still has a great appreciation space. Therefore, our corresponding suppliers should also see the bright future and actively produce products with higher precision, such as CNC drilling machines and edge milling machines, so as to cooperate with the development of the pressure vessel industry, so as to achieve the goal of win-win and income generation. The hydraulic circuit structure adopts the function of pressure maintaining system to reduce the oil temperature and oil leakage. The machine tool is also equipped with various safety protection devices, such as the interlock between the abnormal hydraulic clamping system and the immediate stop of cutting process, and the over travel buffer at both ends of the bed, so as to ensure the safety of the operator and the machine tool. According to the analysis, there are a lot of milling machine manufacturers in China, there are thousands of them. They are mainly distributed in the Yangtze River Delta, and are mainly private enterprises. Most of the enterprises are not large in scale, and each has its own focus. Most of them focus on low-end products.

The research and accumulation work of domestic milling machine manufacturers in welding process is still very limited, so it is difficult to provide mature and reliable welding process support. As a result, domestic products have no competitive advantage with imported products except for price, and most of the high-end market share is still occupied by imported edge milling machines. It is the lack and disconnection of intelligence and welding process service that China's welding equipment is mostly pure machines and equipment, and does not shoulder the responsibility of solving welding problems for welding users. The utility model comprises a machine base, two side plates, a beam and a knife rest. A working table is arranged on the machine base, and a number of hydraulic pressure plate devices are connected at the lower part of the beam. The hydraulic pressure plate device is located above the working table. The tool rest walking car is also provided on the tool rest walking car. The guide rail with the same length and parallel to the working table is arranged on the front of the machine base. The tool rest traveling car is connected with the machine base through the guide rail 。

The edge milling machine adopts the form of sliding guide which is widely used on heavy machine tools, with large contact area, good rigidity and strong seismic resistance. In order to reduce the friction resistance of the guide rail, a large carriage unloading device is added. A load-bearing rolling cylinder is installed between the guide rail and the carriage, which bears most of the gravity of the carriage. In this way, the friction resistance of the guide rail is changed from simple sliding friction to sliding plus rolling, the friction coefficient is greatly reduced, and the friction force is also greatly reduced. Accordingly, the service life of guide rail is improved. In order to improve the wear resistance of the guide rail pair and improve the friction characteristics, the corresponding friction pair is pasted with plastic. Commonly known as plastic rail. The chemical composition of plastic sliding guide is stable and the friction coefficient is small. The utility model comprises a machine base, two side plates, a beam and a knife rest. A working table is arranged on the machine base, and a number of hydraulic pressure plate devices are connected at the lower part of the beam. The hydraulic pressure plate device is located above the working table. The tool rest walking car is also provided on the tool rest walking car. The guide rail with the same length and parallel to the working table is arranged on the front of the machine base. The tool rest traveling car is connected with the machine base through the guide rail 。

With the continuous improvement of domestic productivity, the corresponding equipment update speed is also accelerating, and the milling machine is one of the most used commodities. In terms of the scale of its use, it also covers a wide range of fields, including oil, electricity, construction machinery and so on. It is primarily developed to satisfy the milling forming skills. Edge milling machine is widely used in the production of spiral welded pipe with its remarkable advantages. Compared with the disc shear, the edge milling machine improves the edge processing quality, makes the forming and welding process more stable, reduces the plate consumption and improves the production safety. However, the edge milling process also has its inherent shortcomings. If the control is not good, it will lead to a series of forming and welding defects, such as porosity, slag inclusion, incomplete penetration, burn in, welding deviation, irregular weld bead, etc.

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