spectrum

More documents

Recommendations

Info

Servo-presses 14 <strong>spectrum</strong> METAL FORMING 2012 p Andritz Kaiser GmbH, Germany Pioneering Drive Concept Andritz Kaiser has been able to signifi cantly increase the productivity and energy effi ciency of its stamping and forming presses by combining the time-tested drag link system with an innovative servodrive concept. p Over the last 20 years, the drag link system patented by Andritz Kaiser GmbH from Bretten, Germany, has stood the test of time in over 300 stamping and forming presses under harsh operating conditions. The “intelligent gear unit,” as managing director Stefan Kaiser refers to the drag link drive, features a variable transmission ratio and force paths within the operating range that are almost twice as large as those in eccentric presses. Using the servodrive means that the plunger motion also becomes programmable by the user. The press is therefore highly fl exible and Andritz Metals, Bretten Among other things, Hako Automotive produces challenging deep-drawn parts for the automotive industry on this KSTU 8000, an 800 t press by Andritz Kaiser can be adapted easily to different tasks or materials. For many parts, optimized motion control increases output by up to 80 percent compared to eccentric presses. Lower consumption thanks to energyeffi cient drives As the basic motion of a drag link drive approximates very closely the motion profi le of a servo-press, it is usually possible to signifi cantly reduce the number of drive motors required compared to a purely eccentric press, thereby considerably decreasing
energy consumption. Heavy-duty water-cooled complete torque motors of the Simotics T-1FW3 series were used in all the servo-presses. Mounted centrally above the press, one or several of these torque motors drive the drag link system and therefore the plunger via an internal gear. The drive system is completed by an energy accumulator, optionally in the form of capacitor modules or an additional compact asynchronous motor of the Simotics M-1PH8 series. This temporarily stores the regenerative energy produced during braking and releases it again to cover peaks in demand during acceleration processes. Targeted motion control with Simotion The drag link servo-presses by Andritz Kaiser are controlled by the Simotion D445 motion control system in the modular mounting technology of the Sinamics S120 drive system. An optimized plunger travel profi le is generated automatically using the “curve generator” tool specially developed for use with Simotion in servo-presses. The press manufacturer has fl exibly integrated the tool into its operator interface under Simatic WinCC and created a simple operating screen for a Simatic Multi-Panel MP377. The installation of new tools is made easier with a handheld controller. Thanks to servodrive technology, the handheld device can also be used to arrive The Simotion curve generator automatically calculates an optimized plunger motion and determines the exact feed length or transfer time precisely at the required plunger position and to incorporate it into the program. The Multi-Point function is another new addition, enabling data points to be programmed at any point in the plunger’s travel. The forming motion can be reduced at such data points – for example, to cut threads or to introduce inserts. Wolfgang Wiedenmann, deputy sales manager at Andritz Kaiser, predicts that “hybrid processes such as this will be required more and more in the future.” The press manufacturer has also extended the tried-and-tested curve generator by an input fi eld for feed length or transfer time. The operator can therefore see at a glance the feed length or transfer time generated by his or her entries. It is then easy to make a comparison with the transfer controller. This shows whether the machine can travel the motion profile selected. Wiedenmann says, “Processes are becoming increasingly complex, and therefore even semiskilled operators must still be able to manage the press easily and safely.” He adds, “It is possible to ensure this by using the Simotion curve generator.” In order to guarantee the necessary safety, the management at Andritz Kaiser decided on a Simatic S7-300F with fail-safe S7-317F-2 DP CPU. An additional library with press safety modules is also included in the dedicated Distributed Safety option package. The curve generator is an integral part of the press controller. Increase in productivity and product quality One of the fi rst users of the latest generation of servo-presses by Andritz Kaiser is Hako Automotive, a division of Ferdinand von Hagen Söhne & Koch GmbH & Co. KG. The stamping facility located in Wuppertal produces complex structural and assembly components for leading car manufacturers on a KSTU 8000 drag link servo-press with a press force of 800 t, a 400 mm stroke, and automatic stroke adjustment. The diversity of the stamped and formed parts requires a particularly flexible machine. »Processes are becoming increasingly complex, and therefore even semiskilled operators must still be able to manage the press easily and safely. It is possible to ensure this by using the Simotion curve generator.« Wolfgang Wiedenmann, Deputy Sales Manager, Andritz Kaiser GmbH Stefan Kaiser sums up, “The experience and results gained with and from Hako Automotive and other users were thoroughly convincing. Our expectations with regard to productivity, product quality, and energy efficiency were greatly exceeded. The userfriendliness is excellent as usual, and machine handling is still easy.” p info contact www.siemens.com/metalforming stephan.hoja@siemens.com <strong>spectrum</strong> METAL FORMING 2012 15
Page 1 and 2: spectrum October 2012 METAL FORMING
Page 3 and 4: Editorial “ Extensive portfolio w
Page 5 and 6: Siemens AG Install error-free tools
Page 7 and 8: As part of a modernization of the p
Page 9 and 10: Photos: W. Marschner Consistent mod
Page 11 and 12: converter and its parameters are im
Page 13: Simotics T-1FW4 heavy-duty torque m
Page 17 and 18: The electrical equipment of the est
Page 19 and 20: S. Dunkes GmbH in conjunction with
Page 21 and 22: TMP, based in the ancient city of V
Page 23 and 24: permanent solution for the axis con
Page 25 and 26: touch of a button.” The entire pl
Page 27 and 28: » In view of the large number of a

spectrum

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?