Energy efficient hydraulic systems

Hydraulic systems & components

1st Quarter 2015 Hydraulic systems & components

With Voith’s innovative new hydraulic systems, operators of sheet metal processing systems will be able to save up to 80% energy while simultaneously increasing productivity. These are the PSH press drive servo hybrid, the CSH die cushion drive and the newly developed HDE high performance punch system.

Innovative powering of presses

PSH press drive servo hybrid.

The PSH press drive servo hybrid drive replaces classic valve and control technology. The intelligent control and regulation enables highly flexible use of the press. It guarantees the best possible matching of power and speed so the the press only uses as much energy as required by the particular process phase. The advantage for the operator is up to 60% energy savings and improved total cost of ownership.

Energy-saving and freely programmable

For demanding forming processes, Voith has developed the CSH die cushion drive. This a combination of a press drive and die cushion drive that can give operators energy savings of up to 80%. By using a servo hybrid die cushion drive consisting of a servo pump and double-acting die cushion, previously unattainable efficiency levels become possible. Compared to conventional systems consisting of a die cushion and pressure-relief valve, the Voith system feeds the mechanical power of the servo pump back to the process through the motor in the form of electric power. The CSH die cushion drive is freely programmable in terms of speed, force, position and acceleration. It simultaneously increases output and the quality of the workpieces produced while providing process variability.

Highly dynamic and precise

HDE high performance punch system.

With its integrated HDE high-performance punch system, Voith offers a new generation of stamping systems. The HDE was developed specifically for punching, nibbling and forming applications in the high-end segment. It offers convincing performance with high dynamic behaviour and precision control. The highly dynamic behaviour of the HDE is based on newly developed valves as well as intelligent hydraulic and electronic control circuits. With a punch stroke of 4 mm, the new punch system achieves a cycle time of 18 ms. The operator benefits from very high machine productivity.

Voith’s extensive product portfolio includes punch systems for everything from entry-level to high-end machines. The HPPC electrohydraulic punch drive is the most powerful punch system and achieves over 500 cycles per minute – performance unmatched anywhere in the world. The lifting cylinder operates in a hydromechanical control circuit and satisfies every demand placed on a high-performance punching drive. Besides the large high cycle rate for punching and nibbling, it also can operate with precision during forming. Voith punching systems impress with a simple installation using preprogrammed software modules.

For more information contact Terry-Lynn McIntosh, Voith Turbo, +27 (0)11 418 4036, [email protected], www.voith.com

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Energy efficient hydraulic systems

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