Forming-Precision-Driven Structure Design of Hydraulic Press： Methodology and Case Study

The structure stiffness of presses has great effects on the forming precision of workpieces, especially in near-net or net shape forming. Conventionally the stiffness specification of presses is empirically determined, resulting in poor designs with insufficient or over sufficient stiffness of press...

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Bibliographic Details
Published inTransactions of Tianjin University Vol. 21; no. 6; pp. 541 - 553
Main Author 李艳聪 张连洪 何柏岩 陈永亮 张淳
Format Journal Article
LanguageEnglish
Published Tianjin Tianjin University 01.12.2015
Subjects
Engineering
Humanities and Social Sciences
Mechanical Engineering
multidisciplinary
Science
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conceptual design
optimal design
hydraulic press
prototype design
precision forming
structure design
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ISSN1006-4982
1995-8196
DOI10.1007/s12209-015-2500-2

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Summary:The structure stiffness of presses has great effects on the forming precision of workpieces, especially in near-net or net shape forming. Conventionally the stiffness specification of presses is empirically determined, resulting in poor designs with insufficient or over sufficient stiffness of press structures. In this paper, an approach for the structure design of hydraulic presses is proposed, which is forming-precision-driven and can make presses costeffective by lightweight optimization. The approach consists of five steps：（1）the determination of the press stiffness specification in terms of the forming precision requirement of workpieces;（2）the conceptual design of the press structures according to the stiffness and workspace specifications, and the structure configuration of the press;（3）the prototype design of the press structures by equivalently converting the conceptual design to prototypes;（4）the selection of key structure parameters by sensitivity analysis of the prototype design; and（5）the optimization of the prototype design. The approach is demonstrated and validated through a case study of the structure design of a 100 MN hydraulic press.
Bibliography:Li Yancong , Zhang Lianhong , He Baiyan , Chen Yongliang , Zhang Chun （1. Key Laboratory of Mechanism Theory and Equipment Design, Tianjin University, Tianjin 300072, China; 2. School of Mechanical and Electrical Engineering, Tianjin Agricultural University, Tianjin 300384, China; 3. Yianjin Tianduan Press Co., Tianjin 300142, China）
12-1248/T
hydraulic press structure design precision forming conceptual design prototype design optimal design
The structure stiffness of presses has great effects on the forming precision of workpieces, especially in near-net or net shape forming. Conventionally the stiffness specification of presses is empirically determined, resulting in poor designs with insufficient or over sufficient stiffness of press structures. In this paper, an approach for the structure design of hydraulic presses is proposed, which is forming-precision-driven and can make presses costeffective by lightweight optimization. The approach consists of five steps：（1）the determination of the press stiffness specification in terms of the forming precision requirement of workpieces;（2）the conceptual design of the press structures according to the stiffness and workspace specifications, and the structure configuration of the press;（3）the prototype design of the press structures by equivalently converting the conceptual design to prototypes;（4）the selection of key structure parameters by sensitivity analysis of the prototype design; and（5）the optimization of the prototype design. The approach is demonstrated and validated through a case study of the structure design of a 100 MN hydraulic press.
ISSN:1006-4982
1995-8196
DOI:10.1007/s12209-015-2500-2