JPS56128636A - Closed forging method for connecting rod - Google Patents
Closed forging method for connecting rodInfo
- Publication number
- JPS56128636A JPS56128636A JP3202780A JP3202780A JPS56128636A JP S56128636 A JPS56128636 A JP S56128636A JP 3202780 A JP3202780 A JP 3202780A JP 3202780 A JP3202780 A JP 3202780A JP S56128636 A JPS56128636 A JP S56128636A
- Authority
- JP
- Japan
- Prior art keywords
- dies
- primary
- molding
- side faces
- punches
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To increase the accuracy of molding and considerably improve yeilds by pressure-molding the primary molding which has been rough-forged with primary dies, successively from the side faces and end parts in secondary dies.
CONSTITUTION: A bar-shaped material is sandwiched between a pair of two-split primary dies, and after the primary dies are closed under pressure, punches are advanced from the side faces, whereby the material is spread and a primary molding II is formed. Thence, the primary molding II is sandwiched between a pair of two- split secondary dies 8, 9, which are then closed under pressure. The dies 8, 9 are pierced with through-holes 10, 11 for punches 13, 14 for side faces respectively in the vertical directions and a through-hole 12 for a punch 15 for a large end part is pierced in the side face across the dies 8, 9. First, a pair of the punches 13, 14 are advanced to mold under pressure the side faces, whereby a material III is formed. Thence, the punch 15 is advanced to form the shape of the large end part of the connecting rold, whereby a material IV is obtained. The material IV is easily removed to the outside by utilizing the punch 14.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3202780A JPS56128636A (en) | 1980-03-12 | 1980-03-12 | Closed forging method for connecting rod |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3202780A JPS56128636A (en) | 1980-03-12 | 1980-03-12 | Closed forging method for connecting rod |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56128636A true JPS56128636A (en) | 1981-10-08 |
Family
ID=12347374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3202780A Pending JPS56128636A (en) | 1980-03-12 | 1980-03-12 | Closed forging method for connecting rod |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56128636A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6042426U (en) * | 1983-08-29 | 1985-03-26 | トヨタ自動車株式会社 | Forging mold structure |
JPH01104424U (en) * | 1987-12-29 | 1989-07-14 | ||
EP0850711A1 (en) * | 1996-12-24 | 1998-07-01 | Sumitomo Heavy Industries, Ltd. | Process and machine for forging rod-shaped article having deformed portion at an end thereof |
CN101767174A (en) * | 2010-02-25 | 2010-07-07 | 无锡透平叶片有限公司 | Loose tooling upsetting device of continuous upsetting heads at both ends of long rod material |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4829666A (en) * | 1971-08-20 | 1973-04-19 | ||
JPS5047860A (en) * | 1973-05-14 | 1975-04-28 | ||
JPS5129506A (en) * | 1974-08-30 | 1976-03-12 | Kazumasa Watanabe | SHOSHISOCHI |
JPS5397970A (en) * | 1977-02-08 | 1978-08-26 | Bunkichi Fukaya | Thrust bearing metal form device |
-
1980
- 1980-03-12 JP JP3202780A patent/JPS56128636A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4829666A (en) * | 1971-08-20 | 1973-04-19 | ||
JPS5047860A (en) * | 1973-05-14 | 1975-04-28 | ||
JPS5129506A (en) * | 1974-08-30 | 1976-03-12 | Kazumasa Watanabe | SHOSHISOCHI |
JPS5397970A (en) * | 1977-02-08 | 1978-08-26 | Bunkichi Fukaya | Thrust bearing metal form device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6042426U (en) * | 1983-08-29 | 1985-03-26 | トヨタ自動車株式会社 | Forging mold structure |
JPH0235383Y2 (en) * | 1983-08-29 | 1990-09-26 | ||
JPH01104424U (en) * | 1987-12-29 | 1989-07-14 | ||
EP0850711A1 (en) * | 1996-12-24 | 1998-07-01 | Sumitomo Heavy Industries, Ltd. | Process and machine for forging rod-shaped article having deformed portion at an end thereof |
CN101767174A (en) * | 2010-02-25 | 2010-07-07 | 无锡透平叶片有限公司 | Loose tooling upsetting device of continuous upsetting heads at both ends of long rod material |
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