The current development trend of flat grinding is to turn forming, stepping, cutting, rapid shaking, and three-dimensional curved surface grinding. It can be said that flat grinding is one of the most promising models in grinding machine tools. China's flat grinding factory should jump out of the traditional plane grinding thinking and turn to the idea of ​​non-planar grinding such as curves or contours to further develop our own unique technologies and products.
First, the development trend of surface grinders 1. From the perspective of specifications, it is mainly based on small flat grinding. Nearly 50% of the width of the table is less than 200mm. The transportation and installation of small-sized machine tools are convenient; the foreign flat grinding does not distinguish between ordinary, precise and high-precision precision grades. Compared with small-sized machine tools, the accuracy is easy to do very high; In the market, the potential demand for medium and small size flat grinding is very large.
2. From the control point of view, more than 70% of the CNC type, there are single-axis, two-axis and three-axis CNC, up to five-axis control, especially the large-size models above 400, all CNC. Due to the development of the technical level leading to functional changes, flat grinding has changed from the traditional surface grinding to the forming grinding, and conventional control has been difficult to achieve functional requirements. CNC flat grinding has formed a market trend.
3. From a functional point of view, more than 50% of flat grinding is not only used for horizontal plane machining, but also for surface grinding, such as turning forming, stepping, cutting, rapid shaking, and three-dimensional space curves, such as ELB and BLM. A five-axis linkage grinding center for grinding non-planar complex surfaces; Unison and Trutech's flexible grinding systems for forming, centerless, external, tool, contour and other grinding processes; Yufu, Parker's rapid-jitter grinding, etc., reflect that flat grinding is the most promising model in grinding machine tools.
Second, development shows four major changes
1. High speed, composite, high precision and high rigidity are still the main developments of the gold cutting machine, but there are new changes. Compounding has changed from the original compound to the composite and from the practical and efficient consideration, such as car, milling compound, car, milling, drilling compound, milling machine and EDM compound; from the functional point of view, the composite machine tool Very strong, for a certain type of parts consideration; from the accuracy point of view, positioning accuracy <2μm, repeat positioning accuracy ≤ ± 1μm machine tools have been everywhere; from the spindle speed, 8.2kW spindle up to 60,000r / min, 13kW up to 42000r /min, high speed is not a proprietary feature of small power spindles; from a rigid point of view, machining centers that can process 60HRC hardness materials have emerged.
2. The modular design has been applied to the manufacture of machine tools. The horizontal design, vertical series, full series, and cross-series modular design, whether it is a Japanese machine tool represented by Otsuka and Makino, or an American machine tool represented by Haas, Cincinnati, etc., looks exactly the same, but the function is completely Different, many of the modules are universal.
3. The fully automated concept has changed. The traditional fully automatic machine tool uses a pneumatic or hydraulic manipulator to realize the automatic loading and unloading of the workpiece. Now, the real multi-joint serial robot is used to realize the loading and unloading of the workpiece, including the stacking of completed parts. . The scope of control is increased, the flexibility of the assembly line is strengthened, and the auxiliary supporting machinery is greatly reduced.
4. Environmental requirements are getting higher and higher. Most of the exhibits on display exhibited a fully enclosed enclosure with absolutely no chipping or splashing of cutting fluid. On the other hand, the exhibition of a large number of industrial washing machines and cutting fluid processor systems also reflects the increasing demands of modern manufacturing for environmental protection.
Third, it lies in design innovation . Flat grinding is the most promising machine tool in grinding machine tools. In addition to the traditional surface grinding function, based on the flat grinding of the bed, the carriage, the countertop, the grinding head and other large parts, it can be transformed into an outer circle, curve, tool, centerless grinding machine, such as the kelee C1020N2 outer circle. The basis of the grinding machine and the B6062PC2 tool grinding is flat grinding. After perfecting the series of flat grinding specifications, China should jump out of the traditional plane grinding thinking to the non-planar grinding process such as curves or contours to further develop and form technologies and products with our own characteristics.
2. Modular design will be a main line throughout the whole process of product design, whether it is the trend of machine tool technology development or the requirements of market competition; whether it is the need to reduce costs or improve the quality of products, we need to develop and design products in the future. In the middle, do a good job of modular design.
3. The development of the world machine tool industry is fundamentally the development of design innovation concepts. The traditional metal cutting principle, with a new modern design concept combined with advanced control technology, is driving major changes in machine tool technology.
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