“Engineered Hydraulics” – With this slogan, Voith have presented advanced hydraulic systems for sheet-metal processing machines and systems at Blechexpo 2013 in Stuttgart (Hall 8, Booth 8314), which ran from 5 – 8 November. The focus was on the PSH press drive and the newly developed CLDP servo drive. Voith also presented the product portfolio of punching systems. 

The PSH press drive – pressing on with innovation 

In the hydraulic PSH press drive, a servo pump replaces the classic valves and controls. This allows an optimal matching of force and speed to the press process and reduces the complexity of the press drive. The modular design makes system integration particularly simple, both for new systems and retrofits. Energy savings of up to 60 percent over conventional systems are possible. The PSH total concept also provides the operator with lower costs for commissioning, training, maintenance and repair. The sensor equipment adds more diagnostic options that support preventive maintenance and repair.

The CLDP servo drive – high power density, extended lifetime 

The CLDP (Closed Loop Differential Pump) servo drive is setting new standards: The self-contained linear drive is compact, highly dynamic and energy efficient. In addition, it offers the user all the advantages of a hydraulic system solution. These include overload protection, a high power density and virtually wear-free operation. Thanks to the integrated servo pump, the energy efficiency is far greater than that of conventional solutions. The CLDP servo drive can be used for all direct linear motions – primarily when dynamic response, reproducibility and reliability are needed.

High-performance punching systems for punching and nibbling machines 

The Voith product portfolio covers punching systems from the low level all the way to high-end machines. Proven components such as power packs with energy-efficient pumps and the load-following dual-pressure system with separate accumulator circuits for low pressure and high pressure are the guarantee for energy-saving systems. Voith punching systems impress with a simple installation using preprogrammed software modules.

The electrohydraulic HPPC punch drive is the most powerful Voith punching system and runs at up to 1,500 cycles per minute. The HPPC is a programmable high-performance drive. The lifting cylinder operates in a hydromechanical control circuit and satisfies every demand placed on a high-performance punching drive. Besides the high cycle rate for punching and nibbling, it also can operate with precision during forming.

Over the midrange, the new Voith HDM punching system impresses with considerably reduced costs, while keeping the precision just as high. The HDM punching system is specially optimized for punching, nibbling and forming applications and is distinguished by particularly high power. The load-dependant dual-pressure system provides for an optimal power balance in the system. This results in lower energy consumption with outstanding performance. At high pressure operation, the reduced speed lowers the noise and reduces the load on the machine.

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Voith Turbo H + L Hydraulik is a subsidiary of Voith Turbo. Voith Turbo, the specialist for hydrodynamic drive, coupling and braking systems for road, rail and industrial applications, as well as for ship propulsion systems, is a Group Division of Voith GmbH. 

Voith sets standards in the markets energy, oil & gas, paper, raw materials and transportation & automotive. Founded in 1867, Voith employs more than 42,000 people, generates €5.7 billion in sales, operates in over 50 countries around the world and is today one of the biggest family-owned companies in Europe.