Abstract Beijing in April is full of spring. The 14th China International Machine Tool Show (CIMT2015) hosted by China Machine Tool Industry Association was held on April 20-25, 2015 at the China International Exhibition Center (New Hall) in Beijing. The theme of this exhibition is...
In April, Beijing is full of spring. The 14th China International Machine Tool Show (CIMT2015) hosted by China Machine Tool Industry Association was held on April 20-25, 2015 at the China International Exhibition Center (New Hall) in Beijing. The theme of this exhibition is “New Normal and New Developmentâ€. In comprehensively expounding the connotation of the new normal of China's economy, President Xi pointed out that the rapid development of the past relied mainly on factor-driven and investment-driven, and the new normal should be transformed into innovation-driven. This is completely consistent with the development of our industry. This time, CIMT2015 is showing the new development under the new normal, that is, the historical process of China's machine tool industry from large to strong. The content structure of this exhibition has been optimized and upgraded, and the support for new technologies and new exhibits such as laser processing machine tools, industrial robots and 3D printing has been increased, and the latest development directions and latest developments of the machine tool industry have been fully demonstrated. CNC heavy-duty machine tools are key equipment for major equipment manufacturing such as power station equipment, ships, metallurgical mines. After 10 years of rapid development in China's heavy-duty machine tool industry, industry enterprises have developed from extensive management to technical intensive development, and gradually move toward modern enterprises; products from low-level simple numerical control to multi-functional composite, product categories, industrial scale The market share has been continuously expanding, especially the technological level has achieved leap-forward development, and the competitiveness has been continuously enhanced, which has attracted worldwide attention. This exhibition showcases the ever-changing changes in the breadth and depth of machine tool automation technology led by modern technology.
1. Overview of heavy machine tool exhibits (1) Orbital transportation industry
Qinghai Huading Industrial Co., Ltd. first introduced two wheel lathes dedicated to wheelset machining and maintenance. Serving the equipment manufacturing and maintenance of axles for rolling stock in the rail transit industry, SLC-25GA CNC non-falling wheel lathe can process two wheel sets of the same bogie at the same time, featuring simple and reliable structure, high cost performance and strong adaptability. The machine can simultaneously repair four wheels on a bogie, or it can be switched to two independent non-falling wheel pair lathe operating modes to meet the processing of various wheelset profiles and brakes. The Danobart Group of Spain also exhibited the CNC non-falling wheel pair lathe. It is a special equipment mainly used for track correction maintenance. It can repair the wheel tread, rim, inner side and brake disc surface.
(2) Horizontal machining center
This kind of machine tool combines the basic functions of floor milling machine and bed type milling machine, and has the characteristics of automatic tool change or automatic change of workpiece tray according to NC program. It is also the basic equipment for forming flexible production line, which has become a large demand in machinery manufacturing. A class of processing equipment accounts for about 30% of the total demand for CNC metal cutting machine tools. It is a hot commodity in the world machine tool market. China has developed rapidly in recent years. The general varieties have been mass-produced. A few manufacturers have already entered high-precision and large-size products. market.
KHC160-5A five-axis horizontal machining center is a high-performance horizontal machining center developed and manufactured by Kunming Machine Tool for specific fields such as aerospace, automobile manufacturing and composite materials processing. It is integrated, intelligent and humanized. It provides a good solution for the processing of special parts such as large box parts, thin-walled parts, and complex curved surfaces. The machine's special design upgrades machine performance to a level that makes it more competitive in the large horizontal machining center market.
The SPEEDMAT3000/16 boring and milling machining center exhibited by PAMA has ensured high rigidity, machining precision and iron cutting speed with its technical innovation, and is suitable for the processing of cast iron, steel and titanium alloy. The SPEEDMAT series of boring and milling centers have high feed rates, high spindle speeds, high power and high torque for maximum productivity. It can be configured with single work stations, automatic pallet change systems or linear pallet change systems, and even for multiple machines. It can be customized to meet the needs of energy, engineering machinery, heavy machinery engineering, shipbuilding, railway, large diesel engines, aerospace, general processing and Other applications.
(3) Floor-mounted milling and boring machine
The TKS6920 CNC floor-milling and boring machine exhibited by Wuzhong Group is like a giant behemoth standing in the exhibition hall, which is extremely dazzling. The machine tool is optimized by finite element method and has machining functions such as boring, drilling, tapping, milling and milling. Equipped with a high-skilled high-precision CNC rotary table, right-angle milling head and other functional accessories, five-sided machining can be realized. It is an ideal equipment for the processing of large parts such as steam turbines, generators and heavy machinery in the metallurgical, energy and electric power industries. Facing the development situation of increasing competition pressure in the manufacturing industry and rapid upgrading of user demand, Wuzhong Group strives to enhance its independent innovation capability, enhance the development of endogenous power, and promote the transformation and upgrading of enterprises.
The FAM-160 high-speed floor milling and boring machine exhibited by Qiqihar Second Machine Tool (Group) Co., Ltd. has the advantages of large bearing capacity and small friction coefficient, and features high speed, high precision, high automation and high reliability. Equipped with multi-axis control and five-axis linkage function, it can completely replace imported, meet the requirements of domestic machinery industry for high-precision machine tools, and serve the national key industries such as aerospace, military, shipbuilding and power generation equipment.
(4) Gantry machining center
In this exhibition, Sany Heavy Machinery Co., Ltd. aimed at the mid-to-high-end market and launched the new GMFA fixed beam gantry, which has the characteristics of high rigidity, high speed, high efficiency, high torque and high load capacity. The products have been innovated and adjusted in terms of layout, structure, parameters and details, so as to achieve “reducing costs and increasing efficiency†and improving cost performance. The machine can realize five-sided five-axis machining and has a wealth of expansion functions. Can be widely used in machine tools, engineering machinery, marine diesel engines, steam turbines, rolling stock, electric machinery, mold manufacturing, mining and metallurgical machinery and other mechanical manufacturing industries complex parts processing.
At the exhibition, the MCR-BIII30E gantry five-face machining center exhibited by Otsuka Machinery Co., Ltd. ushered in a large audience with its beautiful and clean posture. The machine is designed to process large workpieces, which not only enables powerful cutting and precision boring, but also enables high-speed, high-precision machining of the mold. Parts that previously required multiple machine tools to be machined can now be completed with just one MCR-BIII, dramatically reducing machining time. This machine is most suitable for the whole process of mold, complex cutting of large workpieces and high-precision machining. Used in automotive, aerospace, marine, transportation, energy and other fields.
Jinan No. 2 Machine Tool Group Co., Ltd. exhibited the XHV2720×80 fixed beam gantry mobile five-axis linkage high-speed machining center, equipped with the VX45×200 double swing angle CNC universal milling head independently developed by the company, which was provided for a certain aircraft group of AVIC. It is also the first time that the five-axis linkage CNC machine tool with domestic double-angle swing universal milling head has entered the aviation main engine factory. Large structural parts in the aviation field are difficult to process due to the complicated structure. Jinan No. 2 machine tool independently developed double-angle pendulum CNC universal milling head and other products, which can solve the processing of aerospace aluminum alloy, titanium alloy, high temperature steel and composite parts. It has become one of the few enterprises in China to master this technology, and has reduced its international advanced. The level of the gap.
(5) CNC vertical lathe
Botou Giant Heavy Industry exhibited the CK5225 CNC double-column vertical lathe, which is an advanced equipment with excellent performance, wide range of processes and high production efficiency. The product adopts advanced matching parts, featuring powerful cutting, heavy load on the worktable, high dynamic and static precision, safe and reliable action, long service life and high processing efficiency. It is mainly used for rough finishing of inner and outer cylindrical surfaces, inner and outer conical surfaces, threads, arcs and complex curved surfaces for ferrous metals, non-ferrous metals and some non-metallic parts.
Shandong Shanyi CNC Machine Tool Manufacturing Co., Ltd. exhibited the FLC4500-900 CNC gantry turning and milling machine tool, which can complete the pentahedron machining in one clamping. The CNC turning and milling compound rotary table is both the vertical turning table and the servo with precise arbitrary indexing. Turntable. The machine has good rigidity, high precision and good stability. It is suitable for the processing of rotary parts such as precision slewing bearings, flanges and large ring gears. It can also process complex parts such as large propellers and turbine impellers. It is widely used in wind power, bearings and ships. , automotive, aerospace and other industries.
2. Status and transformation of heavy machine tools in China
In the past two years, China's heavy-duty CNC machine tools have developed rapidly. Heavy-duty machine tools can basically meet the needs of the market. The annual output and market consumption of heavy-duty CNC gantry boring and milling machines, heavy-duty floor boring and milling machines, heavy-duty vertical and horizontal lathes have ranked the world. one. However, high-end heavy-duty CNC machine tools also rely on imports, mainly from Germany and Italy.
China's heavy-duty machine tool products still need to be improved in terms of precision, manufacturing process level and reliability. At the same time, the new product development capability and manufacturing cycle can not fully meet the needs of users, especially the CNC system and functional components matched with heavy-duty machine tools, and also need to be met by overseas manufacturers. Domestic heavy-duty machine tools have great advantages in terms of manufacturing capacity and price, especially ultra-heavy machine tools have reached the international advanced level. With the advancement of science and technology and the continuous efforts of enterprises, it is believed that China's heavy-duty machine tool manufacturing will gradually narrow the gap with foreign countries.
At present, the market demand and market environment have undergone great changes. The demand characteristics are that the demand ratio of medium and high-end CNC machine tools is increasing. It is mainly composed of composite processing machine tools integrating high speed, high precision, intelligence and environmental protection. . At the same time, the market has released a clear signal that demand for technical services is more urgent. The new demand situation is an integrated turnkey project that combines equipment and process support, software design and remote services. It requires the host manufacturer not only to provide hardware, but also to provide software and process technology services. This indicates that the future market will pay more attention to technical services, and the technology-centric marketing model will replace the traditional product marketing model. In the future, the demand for technical content will be higher and higher, and the voice of purifying the market will become stronger and stronger. The market situation of winning by quantity, inferior filling, and confusing the fish will never return. Therefore, the market will face a reshuffle, the survival of the fittest is inevitable, and a new market structure is coming.
In short, technology upgrade is the only way to adapt to the market and meet the needs of the market. Enterprises must closely transform and upgrade the needs of key areas such as aerospace, shipbuilding, energy, railway and rail transit. Transformation and upgrading is a long-term and arduous task. Heavy-duty machine tool enterprises must seize the opportunity, start with management, innovation and product structure adjustment, take practical measures to meet market demand, increase technological innovation, and fully demonstrate the new normal state of heavy-duty machine tools. New developments in transformation and upgrading. (Author: Czech Machine Co., Ltd. Yang Limin)
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