JPS55126337A - Warm forging method of cup-form member - Google Patents
Warm forging method of cup-form memberInfo
- Publication number
- JPS55126337A JPS55126337A JP3140779A JP3140779A JPS55126337A JP S55126337 A JPS55126337 A JP S55126337A JP 3140779 A JP3140779 A JP 3140779A JP 3140779 A JP3140779 A JP 3140779A JP S55126337 A JPS55126337 A JP S55126337A
- Authority
- JP
- Japan
- Prior art keywords
- blank
- cavity
- punch
- upsetting
- cup
- 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.)
- Granted
Links
Abstract
PURPOSE: To forge the captioned member of good quality at high efficiency by inserting a fine bar-form blank into an open die and upsetting the same under the specific conditions then backward extrusion-molding the same by the use of a press- fitting punch.
CONSTITUTION: In forging a cup-form member for production of chain rollers, nuts, etc., a bar-form blank 1 of a diameter as small as possible is heated to 400W 800°C and is inserted into the cavity 4 of an open die 3 and is pressed with an upsetting punch 19. At this time, a stepped concave 20 is provided to the pressing surface of the upsetting punch and a knock-out pin 5 is fixed in the position slightly sunk from the bottom of the cavity 4 so that a step part is formed to the top and bottom end parts of the blank and at the same time the blank is upset to the extent that its bulging part 1a makes slight contact with the peripheral wall of the cavity. This enables the heat transfer cooling and offcentering of the blank to be averted and permits the smooth progression of the backward extrusion-molding by the press- fitting punch 17 of the next process.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3140779A JPS55126337A (en) | 1979-03-17 | 1979-03-17 | Warm forging method of cup-form member |
CA000347403A CA1154617A (en) | 1979-03-17 | 1980-03-11 | Warm forging method for cup-shaped pieces |
US06/130,429 US4312210A (en) | 1979-03-17 | 1980-03-14 | Warm forging method for cup-shaped pieces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3140779A JPS55126337A (en) | 1979-03-17 | 1979-03-17 | Warm forging method of cup-form member |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55126337A true JPS55126337A (en) | 1980-09-30 |
JPS6219254B2 JPS6219254B2 (en) | 1987-04-27 |
Family
ID=12330398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3140779A Granted JPS55126337A (en) | 1979-03-17 | 1979-03-17 | Warm forging method of cup-form member |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55126337A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63149037A (en) * | 1986-12-10 | 1988-06-21 | Showa Alum Corp | Manufacture of bottomed pipe |
JP2002113547A (en) * | 2000-10-06 | 2002-04-16 | Kobe Steel Ltd | Method for forming cylindrical member by forge-heading |
JP2007002617A (en) * | 2005-06-27 | 2007-01-11 | Kenkoo:Kk | Oil boom supporting structure |
JP2007107059A (en) * | 2005-10-14 | 2007-04-26 | Daido Steel Co Ltd | Method for manufacturing base material having excellent cold forgeability |
JP2007167882A (en) * | 2005-12-21 | 2007-07-05 | Iura Co Ltd | Enlarge-working method for shaft |
CN112296111A (en) * | 2020-10-10 | 2021-02-02 | 中国兵器工业第五九研究所 | Plastic forming method of large-scale complex special-shaped structural part |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH028061A (en) * | 1988-06-27 | 1990-01-11 | Nec Corp | Printing head for thermal printer |
-
1979
- 1979-03-17 JP JP3140779A patent/JPS55126337A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63149037A (en) * | 1986-12-10 | 1988-06-21 | Showa Alum Corp | Manufacture of bottomed pipe |
JP2002113547A (en) * | 2000-10-06 | 2002-04-16 | Kobe Steel Ltd | Method for forming cylindrical member by forge-heading |
JP2007002617A (en) * | 2005-06-27 | 2007-01-11 | Kenkoo:Kk | Oil boom supporting structure |
JP2007107059A (en) * | 2005-10-14 | 2007-04-26 | Daido Steel Co Ltd | Method for manufacturing base material having excellent cold forgeability |
JP2007167882A (en) * | 2005-12-21 | 2007-07-05 | Iura Co Ltd | Enlarge-working method for shaft |
CN112296111A (en) * | 2020-10-10 | 2021-02-02 | 中国兵器工业第五九研究所 | Plastic forming method of large-scale complex special-shaped structural part |
CN112296111B (en) * | 2020-10-10 | 2022-07-22 | 中国兵器工业第五九研究所 | Plastic forming method of large-scale complex special-shaped structural part |
Also Published As
Publication number | Publication date |
---|---|
JPS6219254B2 (en) | 1987-04-27 |
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