Development trend of cylindrical grinding Dr. Dirk Biermann, director of the Institute of cutting technology (ISF) of Dortmund University of technology, once said when summarizing the development trend of cylindrical grinding: "the primary purpose of continuing to develop cylindrical grinding is to improve the achievable accuracy, improve the performance of equipment and increase the flexibility of machine tools." In his view, one of the key points is to combine various grinding processes on the same machine, such as inner and outer circle grinding, surface grinding and imitation grinding, and even combine with other production processes. Turning and grinding are the most famous process combinations
a research and development achievement of the Institute is the combination of turning grinding honing process. This symbiosis not only reduces the processing time of the workpiece, but also improves the flexibility of adjusting the surface quality of the workpiece
in order to improve the grinding speed, two grinding wheels divided into rough grinding area and fine grinding area can be used to peel grind the inner circle.
peel grinding improves the speed
another research and development achievement of the Institute is inner circle peel grinding, which improves the grinding speed: this process uses a disc grinding wheel divided into rough grinding area and fine grinding area to peel grind the inner circle (Fig. 1). The process is characterized by high metal cutting rate and good surface quality. ELB schliff Werkzeugmaschinen of Baden hausen brings the advantages of this process combination to the extreme. Their new machining center multitec 8 has all the functions of ordinary machining processes (Figure 2). This machining center can perform internal and external grinding, surface grinding, imitation grinding, turning, hard turning, drilling and milling. If necessary, laser processing and welding processes can also be integrated into the machining center. The executive officer of Heino Claussen markefka's first 7 ophthalmicdrugcarriers explained, "the multitec 8 machining center is the result of creative positioning of the target when developing a real value-added solution. In this solution, the proposed cutting method is used to combine the grinding and machining 'worlds', so as to fully meet the expectations of various technologies." The machining center can complete the workpiece processing task with high accuracy without reloading the card. At the same time, it can also extend the running time, such as running when there is no one on duty at night
the new machining center multitec 8 has all machining process functions, and can complete internal and external grinding, surface grinding and imitation grinding, turning, hard turning, drilling and milling and other processes.
people are worried about this method: what is its actual value. In this regard, Claussen markefka said: "users and parts manufacturers in all fields are interested in accurately completing processing tasks with the best production time and minimizing standby time." When tools and dies are used to process bearing rings, gears or guide vanes and other turbine parts, the return on investment of these technologies is particularly high. Multitec 8 machining center is suitable for all kinds of cylindrical and cubic workpieces. Its remarkable feature is that it is easy to replace tooling and workpieces
compound grinding wheel reduces grinding time
using several grinding wheels at the same time can also reduce grinding time. So far, this grinding method has been used only on one surface of the workpiece, often resulting in unbalanced force. The process method called synchro support grinding developed by Emag group overcomes this defect. Using two face-to-face grinding wheels, the unbalanced force is offset, and the processing time is greatly reduced. The new EU standard also stipulates some experimental methods, taking into account the actual scene. For example, when grinding crankshaft, camshaft, long and thin gear shaft and other parts, the processing time can be reduced by 70%
the further development of cylindrical grinder is not only reflected in machining and grinding technology, but also NC controller has further development potential. According to Biermann, "the application of simulation technology is not as advanced and common as today's milling. Another aspect is the use of lubricants in different processing stages, including ultra-high speed grinding." Fritz Studer of Switzerland is responsible for product development Dr. Frank fiebelkorn, director of research and technology, said, "our customers require more flexibility for production grinding machines, and at the same time, they have higher and higher quality expectations for the equipment in the whole life cycle. It is said that it is necessary for equipment manufacturers to add low-cost varieties to their product series for workpiece transportation automation, so as to provide support for the realization of multi machine linkage operation of simpler machines."
student company has developed a spindle head of V1 scanning rate (hz/min or hz/s) for S33 universal cylindrical grinder, equipped with two cylindrical grinding wheels and one internal grinding wheel
reduce tool replacement time
short tooling and downtime play a very important role in formulating production plans, especially small batch or batch production plans that are often changed. Fiebelkorn emphasized, "in order to simplify program design and reduce related work, we will continue to extend the scope of program design and control modules. At the same time, we will further integrate basic grinding technical support." Student will expand their product portfolio to include more modules in order to provide users with configurations and technologies that are more suitable for their artifact range. For example, one of the modules is the new spindle head, which is equipped with two cylindrical grinding wheels and one internal grinding wheel, which is specially developed by student company for S33 universal cylindrical grinder (Fig. 3). (end)