November 2020 Volume 2

FORGING RESEARCH AND TECHNOLOGY

4.3 Better Quality A sawing blade, by nature, achieves a much better surface quality than a grooving tool. Another advantage of sawing is that the material in the kerf hardly increases in temperature. Therefore, the sawing process has no effect on the material properties. Sawing is alsomuch safer than grooving because it does not produce one single large chip but many small chips, which are immediately removed from the kerf by the saw blade itself. 4.4More Rings per Shift Compared to grooving, sawing reduces the time needed for ring cutting by up to 60% t in the case of steel rings and up to 90% in the case of high-strength materials such as titanium or nickel-based alloys. Also, nonproductive times are markedly reduced— by more than 40% in the case of six rings cut from a sleeve, for example — while achieving a high plane-parallelism that practically totally dispenses with the need to remachine the cut rings. 4.5 Less Tool Wear Saw blades generally have a much longer service life than grooving tools because the mechanical stress is distributed over a great number of teeth during sawing. the case of steel rings and up to 90% in the case of high-strength materials such as titanium or nickel-based alloys. Also, nonproductive times are markedly reduced— by more than 40% in the case of six rings cut from a sleeve, for example —while achieving a high plane-parallelism that practically totally dispenses with the need to remachine the cut rings. 4.5 Less Tool Wear Saw blades generally have a much longer service life than grooving tools because the mechanical stress is distributed over a great number of teeth during sawing.

The use of the turntable provides the advantage that the rings can be cut while in a horizontal position. This makes the loading of the machine and the removal of the cut rings much safer. What is more, by sawing, rings with heights of only 15 to 20mm can be produced easily. By means of a special clamping device, such as “lost” jaws, it is even possible to cut rings down to 4.5 mm in height. 5 Conclusion DANGO & DIENENTHAL, as a group of technology driven companies, is proud to be able to base its research and development endeavor on synergies between all group members. The ideas within the group, based on customer requirements and resulting development programs, are steered centrally by a Research & Development Team headquartered in Siegen, Germany. Main topics covered are: • Online connectivity of machine and machine parameters in order to analyze the data to support the maintenance and service provided to the customer. • Full integration of mobile equipment in order to support automation and safety in a harsh environment like a forging shop. • Automated guided vehicles in heat treatment plants can be engineered and supplied after clarification of the specific customer requirements. • Various topics in the field of Industry 4.0 (Internet of Things) regarding special machinery, which have been designed and engineered by DANGO & DIENENTHAL for decades, and the application of new knowledge to this equipment. • DANGO & DIENENTHAL has revolutionized ring cutting. For the user, this means a drastic boost in materials efficiency and tangible cost reduction. • More References in many industries around the world (Figure 11). - Full integration of mobile equipment in order to support automation and safety in a harsh environment like a forging shop. - Automated guided vehicles in heat treatment plants can be engineered and supplied after clarification of the specific customer requirements. - Var ous topics in the field of Industry 4.0

The use of the turntable provides the advantage that the rings can be cut while in a horizontal position. This makes the loading of the machine and the removal of th cut rings much safer. What is more, by sawing, rings with heights of only 15 to 20 mm can be produced easily. By

FIA MAGAZINE | NOVEMBER 2020 68 Simultaneously, the outside of the sleeve can be finish-turned and inspected over its entire height. Then, the first ring is sawed off. It will not drop back onto the sleeve rim because it is securely held in place by the clamping arms. Figure 10: Ring Cutting Machine with all options. Figure 10: Ring Cutting Machine with all options. 4.6 Easier Handling The sleeve is firstly positioned on the turntable and clamped. At the top end—where the first ring is to be cut—the sleeve is fixed by means of clamping arms. Thanks to this arrangement, the heig t of the sawing kerf is held precisely constant throughout the cutting process. 4.6 Easier Handling The sleeve is firstly positioned on the turntable and clamped. At the top end—where the first ring is to be cut—the sleeve is fixed by means of clamping arms. Thanks to this arrangement, the height of the sawing kerf is held precisely constant throughout the cutting process. Simultaneously, the outside of the sleeve can be finish-turned and inspected over its entire height. Then, the first ring is sawed off. It will not drop back onto the sleeve rim because it is securely held in place by the clamping arms. From there, the ring can be lifted and removed by a crane with ease. Afterwards, the clamping arms will be lowered to the position of the next ring slice to be cut.

means of a special clamping device, such as “lost” jaws, it is even possible to cut rings down to 4.5 mm in height.

Figure 11: One of the world’s strongest Rail bound Forging Manipulators: 250 metric tons carrying capacity and 750 MT load moment, delivered in four different countries around the globe. ■ Rainer Dango President & CEO DANGO&DIENENTHAL Rainer.Dango@dango-dienenthal.de (Internet of Things) regarding special machinery, which have been designed and engineered by DANGO & DIENENTHAL for decades, and the application of new knowledge to this equipment. - DANGO & DIENENTHAL has revolutio ized ring cutting. For the user, this means a drastic boost in materials efficiency and tangible cost reduction. - More References in many industries around the world (Figure 11).

5 Conclusion DANGO & DIENENTHAL, as a group of technology driven companies, is proud to be able to base its research and development endeavor on synergies between all group members. The ideas within the group, based on customer requirements and resulting development programs, are steered centrally by a Research & Development Team headquartered in Siegen, Germany. Main topics covered are: - Online connectivity of machine and machine parameters in order to analyze the data to support the maintenance and

Figure 11: