Development of a Hydraulic Actuator to Superimpose Oscillation in Metal-Forming Presses

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

  • Bernd Arno Behrens
  • Sven Hübner
  • Richard Krimm
  • Christian Wager
  • Milan Vucetic
  • Teguh Cahyono
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Details

Original languageEnglish
Title of host publicationSheet Metal 2011, SheMet 2011
Pages217-222
Number of pages6
Publication statusPublished - 28 Mar 2011
Event14th International Conference on Sheet Metal, SheMet 2011 - Leuven, Belgium
Duration: 18 Apr 201120 Apr 2011

Publication series

NameKey Engineering Materials
Volume473
ISSN (Print)1013-9826

Abstract

A novel principle of a rotary piston valve and a high-frequency cylinder for a hydraulic actuation system are presented. This system will be utilized in metal-forming presses to superimpose a high-frequency oscillation on the movement of the ram. This technique was proven to enhance the forming parts quality, to extend the process limits and to reduce the forming force significantly. The key components of the valve are a stator and a rotary piston with radial drilled holes that is designed to provide a pulsating pressure and mass flow rate at a high frequency. A hydraulic cylinder is connected to the valve and converts the pulsating flow into a dynamic process force. The valve and the cylinder will be mounted on the bolster plate of a metal-forming press. In order to superimpose oscillation in the main forming direction, the cylinder is centered under the punch of the metal-forming tool. Three-dimensional computational fluid dynamics (CFD) simulations have been conducted to evaluate and to optimize the designs of the main components of the system. Hereby the commercial simulation code of ANSYS CFX was employed to determine the properties of the cylinder and the valve. Through its mesh motion technique, this simulation code allows the flow analysis between the rotary and the stationary part of the valve. Furthermore the dynamic characteristics of the system have been investigated under the influence of inertia and the compressibility of oil.

Keywords

    CFD simulation, High-frequency cylinder, Hydraulic actuator, Rotary piston valve, Sheet-bulk metal forming, Superimposing oscillation

ASJC Scopus subject areas

Cite this

Development of a Hydraulic Actuator to Superimpose Oscillation in Metal-Forming Presses. / Behrens, Bernd Arno; Hübner, Sven; Krimm, Richard et al.
Sheet Metal 2011, SheMet 2011. 2011. p. 217-222 (Key Engineering Materials; Vol. 473).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Behrens, BA, Hübner, S, Krimm, R, Wager, C, Vucetic, M & Cahyono, T 2011, Development of a Hydraulic Actuator to Superimpose Oscillation in Metal-Forming Presses. in Sheet Metal 2011, SheMet 2011. Key Engineering Materials, vol. 473, pp. 217-222, 14th International Conference on Sheet Metal, SheMet 2011, Leuven, Belgium, 18 Apr 2011. https://doi.org/10.4028/www.scientific.net/KEM.473.217
Behrens, B. A., Hübner, S., Krimm, R., Wager, C., Vucetic, M., & Cahyono, T. (2011). Development of a Hydraulic Actuator to Superimpose Oscillation in Metal-Forming Presses. In Sheet Metal 2011, SheMet 2011 (pp. 217-222). (Key Engineering Materials; Vol. 473). https://doi.org/10.4028/www.scientific.net/KEM.473.217
Behrens BA, Hübner S, Krimm R, Wager C, Vucetic M, Cahyono T. Development of a Hydraulic Actuator to Superimpose Oscillation in Metal-Forming Presses. In Sheet Metal 2011, SheMet 2011. 2011. p. 217-222. (Key Engineering Materials). doi: 10.4028/www.scientific.net/KEM.473.217
Behrens, Bernd Arno ; Hübner, Sven ; Krimm, Richard et al. / Development of a Hydraulic Actuator to Superimpose Oscillation in Metal-Forming Presses. Sheet Metal 2011, SheMet 2011. 2011. pp. 217-222 (Key Engineering Materials).
Download
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abstract = "A novel principle of a rotary piston valve and a high-frequency cylinder for a hydraulic actuation system are presented. This system will be utilized in metal-forming presses to superimpose a high-frequency oscillation on the movement of the ram. This technique was proven to enhance the forming parts quality, to extend the process limits and to reduce the forming force significantly. The key components of the valve are a stator and a rotary piston with radial drilled holes that is designed to provide a pulsating pressure and mass flow rate at a high frequency. A hydraulic cylinder is connected to the valve and converts the pulsating flow into a dynamic process force. The valve and the cylinder will be mounted on the bolster plate of a metal-forming press. In order to superimpose oscillation in the main forming direction, the cylinder is centered under the punch of the metal-forming tool. Three-dimensional computational fluid dynamics (CFD) simulations have been conducted to evaluate and to optimize the designs of the main components of the system. Hereby the commercial simulation code of ANSYS CFX was employed to determine the properties of the cylinder and the valve. Through its mesh motion technique, this simulation code allows the flow analysis between the rotary and the stationary part of the valve. Furthermore the dynamic characteristics of the system have been investigated under the influence of inertia and the compressibility of oil.",
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