Details
| Original language | English |
|---|---|
| Pages (from-to) | 501-515 |
| Number of pages | 15 |
| Journal | Production Engineering |
| Volume | 12 |
| Issue number | 3-4 |
| Publication status | Published - 27 Apr 2018 |
| Externally published | Yes |
Abstract
A hot forging process allows to produce parts of excellent quality and technical properties. Nevertheless, it is not possible to forge undercut geometries like piston pin bores, it is usually necessary to manufacture them in subsequent processes. Thus, an undercut-forging process was newly developed. Such a process requires a multidirectional forming tool, which is challenging due to a high clamping force of the tool during the process. With the research results, the requirements to the crucial tool components of heavy springs diminish, allowing using standard spring devices instead of large and expensive custom designed devices. The aim of this study is to analyze the clamping force, its origin, and influencing factors in order to facilitate the tool design. Therefore, in forming simulations the input parameters press velocity, initial temperature, and punch shape were investigated, and their effect on the clamping force was statistically evaluated. The press velocity has the major impact on the resulting clamping force. The initial part temperature and the shape of the punch tool showed minor but still significant effects. This combination of input parameters reduces the load and the stress on the tool, enabling to perform the process on smaller forging presses. Eventually, forging trials validated the results.
Keywords
- Clamping force, FEA, Forging, Multidirectional, Tool design, Undercut
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Production Engineering, Vol. 12, No. 3-4, 27.04.2018, p. 501-515.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Investigation of the required clamping force at multidirectional undercut-forging
AU - Ross, Jonathan
AU - Langner, Jan
AU - Stonis, Malte
AU - Behrens, Bernd Arno
N1 - Funding information: ported by the IGF project 18162 N of the Forschungsvereinigung Stahlanwendung e.V. (FOSTA) through a resolution of the German Bundestag. The authors would like to thank the German Federation of Industrial Research Associations “Otto von Guericke” e.V. (AiF) for the financial and organisational support of this project.
PY - 2018/4/27
Y1 - 2018/4/27
N2 - A hot forging process allows to produce parts of excellent quality and technical properties. Nevertheless, it is not possible to forge undercut geometries like piston pin bores, it is usually necessary to manufacture them in subsequent processes. Thus, an undercut-forging process was newly developed. Such a process requires a multidirectional forming tool, which is challenging due to a high clamping force of the tool during the process. With the research results, the requirements to the crucial tool components of heavy springs diminish, allowing using standard spring devices instead of large and expensive custom designed devices. The aim of this study is to analyze the clamping force, its origin, and influencing factors in order to facilitate the tool design. Therefore, in forming simulations the input parameters press velocity, initial temperature, and punch shape were investigated, and their effect on the clamping force was statistically evaluated. The press velocity has the major impact on the resulting clamping force. The initial part temperature and the shape of the punch tool showed minor but still significant effects. This combination of input parameters reduces the load and the stress on the tool, enabling to perform the process on smaller forging presses. Eventually, forging trials validated the results.
AB - A hot forging process allows to produce parts of excellent quality and technical properties. Nevertheless, it is not possible to forge undercut geometries like piston pin bores, it is usually necessary to manufacture them in subsequent processes. Thus, an undercut-forging process was newly developed. Such a process requires a multidirectional forming tool, which is challenging due to a high clamping force of the tool during the process. With the research results, the requirements to the crucial tool components of heavy springs diminish, allowing using standard spring devices instead of large and expensive custom designed devices. The aim of this study is to analyze the clamping force, its origin, and influencing factors in order to facilitate the tool design. Therefore, in forming simulations the input parameters press velocity, initial temperature, and punch shape were investigated, and their effect on the clamping force was statistically evaluated. The press velocity has the major impact on the resulting clamping force. The initial part temperature and the shape of the punch tool showed minor but still significant effects. This combination of input parameters reduces the load and the stress on the tool, enabling to perform the process on smaller forging presses. Eventually, forging trials validated the results.
KW - Clamping force
KW - FEA
KW - Forging
KW - Multidirectional
KW - Tool design
KW - Undercut
UR - http://www.scopus.com/inward/record.url?scp=85046022028&partnerID=8YFLogxK
U2 - 10.1007/s11740-018-0830-3
DO - 10.1007/s11740-018-0830-3
M3 - Article
AN - SCOPUS:85046022028
VL - 12
SP - 501
EP - 515
JO - Production Engineering
JF - Production Engineering
SN - 0944-6524
IS - 3-4
ER -