Details
| Original language | English |
|---|---|
| Title of host publication | Sheet Metal 2011, SheMet 2011 |
| Pages | 217-222 |
| Number of pages | 6 |
| Publication status | Published - 28 Mar 2011 |
| Event | 14th International Conference on Sheet Metal, SheMet 2011 - Leuven, Belgium Duration: 18 Apr 2011 → 20 Apr 2011 |
Publication series
| Name | Key Engineering Materials |
|---|---|
| Volume | 473 |
| 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
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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Sheet Metal 2011, SheMet 2011. 2011. p. 217-222 (Key Engineering Materials; Vol. 473).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Development of a Hydraulic Actuator to Superimpose Oscillation in Metal-Forming Presses
AU - Behrens, Bernd Arno
AU - Hübner, Sven
AU - Krimm, Richard
AU - Wager, Christian
AU - Vucetic, Milan
AU - Cahyono, Teguh
PY - 2011/3/28
Y1 - 2011/3/28
N2 - 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.
AB - 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.
KW - CFD simulation
KW - High-frequency cylinder
KW - Hydraulic actuator
KW - Rotary piston valve
KW - Sheet-bulk metal forming
KW - Superimposing oscillation
UR - http://www.scopus.com/inward/record.url?scp=79955040509&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.473.217
DO - 10.4028/www.scientific.net/KEM.473.217
M3 - Conference contribution
AN - SCOPUS:79955040509
SN - 9783037850831
T3 - Key Engineering Materials
SP - 217
EP - 222
BT - Sheet Metal 2011, SheMet 2011
T2 - 14th International Conference on Sheet Metal, SheMet 2011
Y2 - 18 April 2011 through 20 April 2011
ER -