090-10 Lohr, 2010-10-26

Standardized, Ready-to-Install and Modular: Punching Cylinder Axes for Every Performance Class

Punching cylinder axes from Rexroth

In the fastest version, the newly developed punching cylinder axes from Rexroth achieve up to 4,000 strokes per minute in engraving mod

Extensive functionalities from Rexroth for highly dynamic precision

With three ready-to-install electrohydraulic punching axes featuring finely scalable power, Rexroth simplifies the automation of the machine functions of punching, engraving, soft punching and deep drawing. The complete modules consist of a coordinated power unit, fast switching valves on the punching cylinders, a digital position sensor and Motion Control. It closes the control loop internally and communicates via open interfaces with the higher-level machine control. The software automatically considers all the specialties of the fluid technology and reduces the effort needed for commissioning thanks to pre-defined functions. In the fastest version, the punching cylinder axis achieves up to 4,000 strokes per minute in engraving mode.

Rexroth offers the newly developed punching cylinder axes in three versions: standard, advanced and high-performance, with nominal forces of 200kN and 300kN. They achieve typical frequencies of 600, 900, 1200 and even 1500 cycles per minute with a stroke of 4mm. In engraving mode the stroke rate increases to a maximum of 4,000 strokes per minute.

The electrohydraulic solution includes pre-defined functions for punching, notching and perforating machines, cutting presses, hole punching machines and copy punching machines, automatic punching machines, slot punching machines, turret punching machines and embossing machines with high stroke rates at a high level of precision. With clear-cut mechanical, hydraulic and electrics interfaces based on serial components, integration in modular machine concepts takes even less time. Highly dynamic Rexroth valves with optimized switching times enable a higher cylinder stroke frequency, resulting in significantly higher machine and press productivity. The low-friction cylinders can achieve speeds of over 2m/s. A digital position sensor with a resolution of 5μm provides for positioning accuracies of less than 0.01mm and prevents quality-reducing temperature drifts during operation. Particularly compact in design, the punching cylinder axes require up to 20 percent less space than otherwise.

Position control is provided by the core element in the form of a Motion Control HNC100-3X which is optimized for hydraulic drives. With its decentralized intelligence it enables simple integration in diverse control environments, including the IndraMotion MTX CNC system solution from Rexroth. A common engineering environment for planning, commissioning and diagnostics on the basis of IEC 61131-3 also reduces the time-to-market. The HNC100-3X supports PROFINET RT in addition to the PROFIBUS DP, SERCOS III and CanOpen interfaces and offers an Ethernet service interface as well. Extensive function libraries mean that complex programming is replaced by simple parameter setting, while its openness offers a high degree of freedom for the realization of individual solutions, which Rexroth complements with its extensive range of hardware options.

The design of the punching axes rigorously takes into consideration the Rexroth 4EE system for higher energy efficiency. Electrically regulated pumps in the power unit provide actively-regulated delivery flow and pressure for the energy-optimized high/low pressure circuit. In stand-by mode the power unit switches to zero-pressure circulation and reduces energy requirements by 50 percent during this time.

Bosch Rexroth AG is one of the leading drive and control technology specialists worldwide. 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 industrial applications and factory automation, mobile applications and using renewable energies. As The Drive & Control Company, Bosch Rexroth develops, produces and sells components and systems in more than 80 countries. In 2009, the company of the Bosch Group with its 34.200 employees generated sales amounting to about EUR 4,1 bn.

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