Future prospects for machine tool manufacturing
Abstract: The basic view of the Tuebingen Grinder Conference report – German machine tool manufacturers can only maintain their leading position in the international market through innovation.
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Which developments can drive the future development of the machine tool industry? How can German machine tool builders improve their competitiveness? Dr. Christian Brecher, Director of Aachen RWTH Machine Tool Laboratory (WZL), stressed: "In view of the current increase in technical power indicators, we have already seen saturation. In order to adapt to the technical specifications of machine tools, producers want to exceed the difference in technical power parameters. It is more difficult.†At the same time, Dr. Christian Brecher also pointed out that Asia will be the core market for machine tool manufacturers in the future. The traditional business in Europe and the United States will be stagnant, and China will become more and more important in low- and medium-level processes. Competitor. Innovation advantage is the foundation of success
In order to maintain and enhance their competitiveness, how should German machine tool builders do it? In order to integrate China into the ranks of competitors and be able to compete with them, what development should be made? Dr. Brecher asserts: “The technological and innovative advantages of working with users, suppliers and research institutes are the basis for the success of the German machine tool industry.†According to Dr. Brecher, equipment manufacturers are paying more attention to systems than ever before. The application of thinking, “In this regard, machine tool manufacturers are generally accustomed to reforming the machine tool design of components according to demand, and paying less attention to the overall proportion of technological innovation solutions.†Dr. Brecher also mentioned that the decisive factor in the competition process is The sum of equipment, processes and services. According to his point of view, for high-tech machine tools, tolerance-reliable production, process and equipment unification, adaptation technology and IT integration and intelligent, configurable and modular structures should be maximized within the limits of the technology. And a compatible human interface. According to this goal, the development trend of the mechanical manufacturing industry is machine design according to demand, mechanical and program simulation of high power performance, innovative machine parts, and diagnostic and machine monitoring. Dr. Brecher also said: "The newer simulation methods, such as multi-body simulations involving engine technology, support efficient development and machine tools based on machining tasks." This simulation method not only simplifies the computational work of a large number of components and machines. It also reduces the risk of research and development.
Another “contributor†in the machinery manufacturing industry is innovative control software. Leopold Schenk, President of GE Fanuc Automation CNC Co., Ltd., clearly explained this with the Nano-CNC system. The Nano-CNC system solves the nano interpolation of the axis motion with the latest servo technology and runs at high speed on the basis of Nano interpolation. At the same time maintain a high precision surface. In addition, he also mentioned other features of the Nano-CNC system, such as short interpolation time, forecasting thousands of sub-packages, and processing a package for only 0.4s. Precision milling machines for high speed spindles
The processing of micro-components places high demands on high-precision milling machines and their tools, as Mr. Dirk Oberschmidt, director of precision machining at the Fraunhofer Institute for Production Equipment and Structural Technology in Berlin, points out with some data: "Precision milling cutters require spindle revolutions Up to 300,000r/min, radial runout ≤1μm, and high radial rigidity. Manufacturing tolerances of ≤2μm are predicated with a positioning difference of ≤1μm and a displacement measuring system with a resolution of 0.01μm."
Mr. Oliver Wenke, Director of the Measurement Technology R&D Center at Tuebingen Walter Machine Tool Manufacturing Co., Ltd. firmly stated that “the precision tools are getting smaller and smaller, and the requirements for measuring tools are getting higher and higher. The cutting diameter of 0.1mm is not a miracle now. In order to comprehensively measure all the parameters that need to be measured, there is no high-precision measurement technology. In theory, it is impossible for manufacturers to manufacture precision micro-tools.†He uses Walter Helicheck Plus as an example to illustrate modern measuring instruments. Do something. The optical design of this measuring instrument with two 400x (8:1) cameras and a 50x (1:1) amplifying machine can be used to record both normal and standard precision by means of reflected light, transmitted light and overhead light. The geometry of the tool. The great influence on accuracy in manufacturing and measurement is the thermal state of the machine. Dr. Utz-Volker Jackisch, President of Wangen Epucret Polymer Technology Co., Ltd. and the joint venture company, made a specific statement: “The deviation within 80% of the machine tool is caused by thermal deformation. Epucret engineers are putting in temperature sensors and thermostats. In combination with the adjustment technology, a 'smart' machine bed frame for mineral cast iron was developed. The purpose of the mineral cast iron bed frame as a new structural system is to be able to produce the best response to external thermal changes before producing a change in precision." The advantages of introducing such additional components compared to conventional thermal components are: "The sensor and actuator are the interpolated components of the support structure. The thermal deformation is not neglected, but is prevented, and can be independently and automatically adapted. With varying thermal boundary conditions."
“Compared new simulation methods such as multi-body simulations support the efficient development of machine tools that meet your needs.â€