026-13 Lohr am Main, 2013-03-25

Intelligent drive technology seeks exchange


For its new straightening machines for large workpieces, MAE relies on variable speed pump drives which were optimized by MAE and Rexroth exactly for this application in a joint development project.

Straightening machines for large workpieces from MAE with Sytronix variable speed pump drives from Rexroth

The new, patented straightening machine for large workpieces from MAE Maschinen- und Apparatebau Götzen GmbH corrects bends in workpieces of a length of up to 30 meters accurate to 0.1 mm. The Sytronix variable speed pump drives used for moving the ram provide high energy efficiency and ensure precise movements. The creation of a drive solution tailored so perfectly to the application tasks was only possible because the machinery manufacturer MAE pooled its know-how with the technology experience of Bosch Rexroth.

"Our experience with regard to the process and to hydraulic drives is complemented in an ideal manner by Bosch Rexroth's deep understanding of all drive technologies and complex motion controls," emphasizes Manfred Mitze, Managing Director of MAE. The drive-based control integrated in the Sytronix variable speed pump drive provides high energy efficiency and, at the same time, ensures highly precise movements.

For its straightening machines for large workpieces, MAE relies on variable speed pump drives which were optimized by MAE and Rexroth exactly for this application in a joint development project. Two axial piston pumps create an operating pressure of 315 bar. The RICOS straightening controller developed by MAE measures the workpieces and, on the basis of these measurements, depending on the thickness and the type of the material, calculates the required stroke settings of the ram. "The process experience integrated in RICOS is our core competence," underscores Manfred Mitze. Below the machine control, the drive-based Rexroth IndraMotion MLD motion logic system controls the movements in a highly precise and dynamic manner. It closes the control loop between cylinder position, load and rotational speed of the pump drive in a decentralized way. The rotational speed control is performed so smoothly and with so much precision that MAE directly positions the control cylinder without any control valves. This simplifies the hydraulic circuit. In addition, the drive-based controls coordinate further servo drives in the machine.

The straightening machines for large work pieces from MAE, which are scalable with regard to pressure and dimensions, are used in steel works in order to correct bends in solid shaped workpieces and rollers. MAE is a medium-sized machine manufacturer located in Erkrath, in the lower Rhine Region in Germany,specializing in the core technologies straightening and assembling.

Bosch Rexroth AG is one of the world’s leading specialists in the field of drive and control technologies. Under the brand name of Rexroth, the company supplies more than 500,000 customers with tailored solutions for driving, controlling, and moving. Bosch Rexroth is a partner for mobile and machinery applications, engineering, factory automation as well as renewable energies. The company covers the requirements and special needs of each of these markets. As The Drive & Control Company, Bosch Rexroth develops, produces and sells components and systems in more than 80 countries. In 2011, Bosch Rexroth, part of the Bosch Group, achieved sales of around 6.4 billion euros with 38,400 employees.

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The Bosch Group is a leading global supplier of technology and services. According to preliminary figures, more than 300,000 associates generated sales of 51.5 billion euros in the areas of automotive and industrial technology, consumer goods, and building technology in fiscal 2011. The Bosch Group comprises Robert Bosch GmbH and its more than 350 subsidiaries and regional companies in some 60 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. Bosch spent more than 4 billion euros for research and development in 2011, and applied for over 4,100 patents worldwide. With all its products and services, Bosch enhances the quality of life by providing solutions which are both innovative and beneficial.

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Susanne Herzlieb
Maria-Theresien-Straße 23
97816 Lohr am Main
Phone: +49 9352 18-1573