Professional knowledge of grinding machine

A basic knowledge When it comes to the surface grinder, people generally think that it is the kind of machine tool that can only grind the surface. After reading Mr. Chen Xiangdong's article, I understand the development trend of surface grinder in the world today, and people's views are about to change. Nowadays, the development trend of surface grinding is steering forming, stepping, cutting, rapid shaking and three-dimensional surface grinding. It can be said that flat milling is one of the grinder machine tools with the most evolutionary potential. Our country's surface grinding factory should jump out of the traditional thinking of surface grinding and further develop the thinking of non-surface grinding such as turning curve or contour to form its own characteristic technology and products. The International Manufacturing Technology Exhibition (IMTS) in Chicago, USA, which basically represents the current development trend and level of international machine tool technology, was held not long ago. Through this exhibition, the author understands the current development trend of surface grinder and some characteristics of machine tool technology in the world. According to incomplete statistics, there are more than 20 professional surface grinding factories participating in this exhibition in the form of surface grinding objects, including major surface grinding factories in Europe, America, Japan and China, and there are more than 60 surface grinding machines. The main features are as follows:-From the specification point of view, it is mainly small flat grinding, and almost 50% of all flat grinding exhibits have a table width less than 200mm, so the transportation and exhibition of small machine tools are more convenient; Foreign surface grinding does not distinguish between ordinary, precision and high precision grades. Compared with small machine tools, it is easy to achieve high precision. In the international market, there is a great potential demand for small and medium-sized surface grinders. -From the control point of view, more than 70% of the surface grinding exhibits are CNC, including single-axis, double-axis and three-axis CNC, and up to five-axis control, especially for large models over 400, all of which are CNC. Due to the development of technical level, the function has changed, and the surface grinding has changed from traditional surface grinding to form grinding, so it is difficult for conventional control to meet the functional requirements. CNC surface grinding has become a market trend. -From the functional point of view, more than 50% of surface grinding can be used not only for horizontal machining, but also for surface grinding such as steering forming, steps, cutting, rapid shaking and three-dimensional curves. For example, the five-axis linkage grinding center of ELB and BLM company based on plane grinding can realize the grinding of non-plane complex surfaces; Unison and Trutech's flexible grinding system can realize the grinding of forming, centerless, excircle, tools and contours. There are also the quick shaking and grinding of fisherman and Parker and so on. It reflects that the face milling cutter is the most promising type of grinding machine tool. There are four major changes in development. As an international manufacturing technology exhibition, metal cutting machine tools have always been the largest exhibition point, and IMTS is no exception. Machining center, turning center, grinding center, CNC lathe, CNC milling machine, CNC boring machine and other metal cutting machines constitute a huge exhibition group. These metal cutting machines, which integrate traditional cutting principles, modern design concepts and advanced control technologies, represent the development direction and trend of machine tools in the world. -High speed, compound, high precision and high rigidity are still the main melody melody of the development of metal cutting machine tools, but there are new changes. Compound, has changed from the original compound to practical and efficient consideration, such as turning, turning, milling, drilling, milling machine, EDM; From the functional point of view, the compound machine tool has strong pertinence, considering a certain type of parts; In terms of accuracy, the positioning accuracy of many machine tools is less than 2 microns, and the repeated positioning accuracy is less than 1 micron; Judging from the spindle speed, the 8.2kW spindle reaches 60000 r/min, and 1.3 kW reaches 42000 r/min, so high speed is no longer the exclusive feature of low-power spindle. In terms of hardness, there are already machining centers that can process materials with hardness of 60HRC. -Modular design has been fully applied in machine tool manufacturing. The modular design of horizontal series, vertical series, full series and cross series is vividly reflected in the exhibits. Whether it is a Japanese machine tool represented by David and Konoha, or an American machine tool represented by Haas and Cincinnati, the same two exhibits look exactly the same, but their functions are completely different, and many modules are common. The concept of full automation has changed. Traditional fully automatic machine tools use a pneumatic or hydraulic manipulator to realize the automatic loading and unloading of workpieces, but there are more than 10 machining centers and turning centers in the exhibition, and real multi-joint serial robots are used to realize the loading and unloading of workpieces, including the stacking of finished parts. The control range is expanded, the flexibility of the assembly line is enhanced, and the auxiliary machinery is greatly reduced. -environmental protection requirements are getting higher and higher. In the exhibits on display, most of the machine tools are fully enclosed, and there is absolutely no phenomenon of chip or cutting fluid splashing. On the other hand, a large number of industrial cleaning machines and cutting fluid processor systems are on display, which also reflects the increasingly high requirements of modern manufacturing industry for environmental protection. Fundamentally lies in design innovation-surface grinding is the most promising machine tool in grinder machine tools, which is a brand-new concept brought to the author by this exhibition. In addition to the traditional surface grinding function, it can be transformed into cylindrical grinder, curve grinder, tool grinder and centerless grinder based on the surface grinding of lathe bed, carriage, table top and grinding head, such as C 1020N2 cylindrical grinder and B6062PC2 tool grinder of k.o.lee Company. After completing the specification series of surface grinding, China should jump out of the traditional thinking of surface grinding and turn to the thinking of non-surface grinding such as curve or contour to further develop and form his own technology and products. -Modular design will be a main thread running through the whole process of product design, whether it is the development trend of machine tool technology or the requirement of market competition; Whether it is the need to reduce costs or improve product quality, we are required to do a good job in modular design in future product development and design. -The development of the world machine tool industry is fundamentally the development of innovative design ideas. Chicago Exhibition is the world's first exhibition place for virtual axis machine tools. A large number of advanced machine tool exhibits at this exhibition show that the traditional metal cutting principle, with brand-new modern design concept and advanced control technology, is promoting major changes in machine tool technology. Second, refer to the website 1. Skjxsb.cn China CNC mechanical equipment network. Features of this website: You can find almost all the information you mentioned, including industry information products, business opportunities, research on market trends by member companies, exhibition information, hot reports on second-hand equipment patents, technology market policies and regulations, and feedback on job-seeking and recruitment industry monographs.