Title:
METHOD OF MANUFACTURING CYLINDER BLOCK AND PREFORM FOR CYLINDER BLOCK BEARING
Document Type and Number:
Japanese Patent JP3768458
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a cylinder block capable of surely setting a preform at a proper position inside a metallic die, and preventing cracks due to deformation of the preform at the time of casting, and a preform for a cylinder block bearing part used in the manufacturing method.
SOLUTION: Through-holes 1a, 1a penetrating flat parts are formed to flat parts 10A, 20A forming both ends of a preform 1 for a cylinder block bearing part. The through-hole 1a is formed in two combined tapered shapes with two truncated cones having a common top bottom. In this method for manufacturing the cylinder block, a preform manufacturing step is performed for manufacturing the preform 1 with the through-holes 1a, 1a formed. Pins 53, 54 in the metallic die are inserted in the through-holes 1a, so perform a preform holding step for holding the preform 1 in the metallic die. A casting step of a bearing part is performed for casting molten aluminum alloy to the preform 1.
Inventors:
Hiroyuki Omura
Yoji Yamada
Kawaguchi Akitoshi
Toshio Yamauchi
Shogo Komura
Yoji Yamada
Kawaguchi Akitoshi
Toshio Yamauchi
Shogo Komura
Application Number:
JP2002183057A
Publication Date:
April 19, 2006
Filing Date:
June 24, 2002
Export Citation:
Assignee:
Ryobi Co., Ltd.
SUZUKI KABUSHIKI KAISHA
SUZUKI KABUSHIKI KAISHA
International Classes:
F02F1/00; B22D19/00; B22D19/08; (IPC1-7): F02F1/00
Domestic Patent References:
| JP2002061538A | ||||
| JP6285607A |
Attorney, Agent or Firm:
Kazuhiro Kitazawa
Shin Koizumi
Akiko Ichikawa
Shin Koizumi
Akiko Ichikawa
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