Shape accuracy in the forming of deep holes with retreat and advance pulse ram motion on a servo press

Matsumoto, Ryo; Jeon, Jae Yeol; Utsunomiya, Hiroshi

Journal of Materials Processing Technology, 2013, 213(5), 770-778

Number of Access:479（2025-08-16 04:13 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/94000

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Title
Shape accuracy in the forming of deep holes with retreat and advance pulse ram motion on a servo press
Creator
NRID
1000050362645 1000050362645
ORCID
0000-0002-4477-2139 0000-0002-4477-2139
researchmap permalink
ryo-matsumoto ryo-matsumoto
Scopus Author ID
35512063000 35512063000
CreatorName
Matsumoto, Ryo
CreatorName
Jeon, Jae Yeol
NRID
1000080252584 1000080252584
researchmap permalink
read0042799 read0042799
Scopus Author ID
7102139699 7102139699
CreatorName
Utsunomiya, Hiroshi
Subject
Extrusion
Forging
Lubrication
Servo press
Shape accuracy
Description
Matsumoto R., Jeon J., Utsunomiya H.. Shape accuracy in the forming of deep holes with retreat and advance pulse ram motion on a servo press. Journal of Materials Processing Technology 213, 770 (2013); https://doi.org/10.1016/j.jmatprotec.2012.11.023.
Abstract
A method for keeping lubrication in the backward extrusion of deep holes for lightweight structural components is proposed utilizing a servo press and a punch with an internal channel for liquid lubricant supply. The punch is pushed into the specimen with a servo press in a manner that combines pulsed and stepwise modes. Sufficient liquid lubricant is periodically supplied to the deformation zone through the internal channel upon the retreat of the punch. The appropriate punch motions for prevention of galling of the formed hole for extrusion ratios in the range 1.07-1.80 were determined in the proposed forming method using a servo press. Furthermore, the proposed method was found to produce the formed holes with high shape accuracy. The shape accuracy of the formed hole is discussed with experimental and finite element simulation results in terms of lubrication state and temperature change. © 2012 Elsevier B.V.
Publisher
Elsevier Ltd
Source Title
Journal of Materials Processing Technology
Volume (Issue)
213(5)
Page
770-778
Date of Issued
2013-05-01
Language
English
Handle URL
https://hdl.handle.net/11094/94000
PISSN
09240136
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/j.jmatprotec.2012.11.023
Access Rights
open access
CopyRight
© 2013. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article