1. The automotive industry is rapidly developing the demand for tools
In recent years, the development of China's automobile manufacturing industry has been extremely rapid, and major domestic automobile groups are increasing their investment. Many private enterprises have also joined the ranks of automobiles or their parts manufacturing. Almost all the world's major auto companies and well-known auto parts manufacturers have come to China, either joint ventures or sole proprietorships, and have managed to join the boom in manufacturing cars and their parts in China. The demand for machining and metal cutting related to the manufacture of engines, gearboxes, drive shafts, axles and other components required for automobile manufacturing, especially for automobiles, is increasing, so that the demand for tools closely related to machining and metal cutting is increasing. At the same time, there have been many new requirements. The current development of the automotive industry is characterized by increased competition and further demands for customer satisfaction. It is required to be able to introduce new products or convert new models in time according to market demand, and the flexibility of production is increased. When the market has a demand for a certain product, it must seize the opportunity to produce a product that meets the needs of the market. The growth of production volume may increase sharply. The tools that require production support must also adapt to such requirements and changes. It can be delivered in a timely manner and is guaranteed in quantity and quality to meet the needs of production. The quality requirements for the manufacture of automotive parts are also constantly improving, both in terms of machining accuracy, shape requirements and surface quality requirements. At the same time, in order to meet the requirements of new product quantity control, it is required to have a good traceability to the products produced, that is, to control the whole process of product manufacturing. When it is found that the product has quality problems, it can clearly understand which link. The problems, as well as the number of products affected and where they occur, require perfect control and traceability of the tools in the manufacturing process, the tools must be able to make timely and rapid problems at the production site. The response provides powerful, efficient technical support and control and traceability of the tool manufacturing process. In the face of fierce market competition, the automotive industry is fully implementing lean production. At the same time, it is required to continuously reduce tool costs, and the requirements for tool logistics and inventory have also increased. At the same time, due to the improvement of standards and requirements in environmental protection, health and occupational hygiene, the automotive industry has more consideration and control of these aspects, and has new and higher requirements for metal cutting and cutting tools. All of this requires the cutting and tooling industry to continuously develop new technologies, new materials, new processes and new management methods to adapt to the emerging new technologies, new materials and processes and new management systems in the automotive manufacturing process.
2. Development towards flexible and high speed machining
In order to adapt to the changing needs of the market, the automotive products and their parts and components are changing faster and faster. The special machines or rigid automatic lines used in the past have been unable to adapt to this rapidly changing market demand due to their inconvenient replacement of production varieties or expensive transformation. . Therefore, nowadays, the production line for auto parts processing has increasingly adopted flexible production lines, or processing lines composed of flexible processing equipment and special machines, especially in new projects, which tend to adopt flexible processing lines and use a large number of processing. The center can produce different specifications of parts on one production line to meet the needs of different production, and it can be easily converted into a new production line by changing the machining program and related tools and fixtures when the product is updated. It is also convenient to adjust and improve the process and increase and decrease the tool. In the layout of the workshop, the floor of the workshop should be kept as intact as possible, and the trenches provided for centralized cooling are rarely excavated. Machine tools and other equipment can be easily installed and moved to new locations as needed to form a new production line. In the past few years since the establishment of the plant, GM Motor Co., Ltd. has moved the machine tools several times as needed, reducing the equipment of overcapacity production lines, for the production of new projects, or adding equipment with relatively weak production lines to maximize The use of equipment capabilities to quickly meet the needs of the market with extremely high flexibility. In line with this, the tool can be adapted to this highly flexible production and rapidly changing production output and production variety. The tools used in CNC machine tools and machining centers have thus achieved great market and rapid development, and have also caused more and more The more companies and research units are continually investing a lot of manpower and resources in the research and development of cutting new technologies and new tools.
Due to the large production volume, variety and rapid production cycle of the automobile and its parts, although the flexible production line is adopted, the beat requirements still need to be met, so it is inevitable to improve the cutting parameters and adopt high-speed cutting, and the processing center equipment is also adopted. It offers the possibility of achieving both flexible and efficient production. The manufacturing process of automobiles and their parts, especially new factories and new projects, is developing in the direction of high-speed machining. More and more CNC high-speed machining centers are used. The spindle speed of many machining center machines has reached tens of thousands of revolutions. The cutting speed of the bottom hole of the inlet and exhaust pipe of the aluminum cylinder head and the bottom hole of the seat ring are not less than 10,000 rpm, the line speed can reach 1500 m/min, and some surface milling line speed can reach 4000 m/min. The tool speed of the semi-precision and fine cast iron cylinder block cylinder bore has also reached 300 rpm, and the line speed can reach 800m/min. Many surface milling line speeds in the 1.6L engine cast iron cylinder block of Shanghai General Motors Co., Ltd. have reached more than 1000m/min. At the same time, high-performance cutting has also been greatly developed. A large amount of cutting is performed in one cutting, especially in the rough machining. The cutting efficiency is improved, the cutting process is reduced, and half of the machining is performed in some stations. Finishing and finishing are combined. Along with this, many new changes have taken place in tool and cutting technology.
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