JPS5550944A - Warm forging and forming method of holed parts - Google Patents
Warm forging and forming method of holed partsInfo
- Publication number
- JPS5550944A JPS5550944A JP12399878A JP12399878A JPS5550944A JP S5550944 A JPS5550944 A JP S5550944A JP 12399878 A JP12399878 A JP 12399878A JP 12399878 A JP12399878 A JP 12399878A JP S5550944 A JPS5550944 A JP S5550944A
- Authority
- JP
- Japan
- Prior art keywords
- billet
- punch
- die
- warm forging
- guide hole
- 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 obtain holed parts at a high yield without second labor by superposing two or more blank metals in the axial direction of a die, heating the blank metal on the inlet side of the die to the temperature suited for warm forging and piercing this with a punch and at the same time forming a guide hole on the inner side blank surface with the punch end.
CONSTITUTION: A punch 3 which moves forward or backward along the axial- center-direction through-hole 2 of a die 1 and a knock-out pin 4 are opposedly disposed. The second biller 6 born by a pin 4 and the first billet 5 supported to this are disposed in the hole 2. The surplus height h between the billet 5 surface and the die top face is determined by considering the displacement quantity of the wall thickness owing to piercing of the billet 5. The billet 5 having a guide hole 7 in the center of the surface is heated to the temperature suited for warm forging and is pierced home by the punch 3. A guide hole 7 by the punch end 3 is worked in the billet 6 surface. Next, the punch 3 is drawn off and the billet 5 is further additionally worked as the forged product. After the billet 6 is heated like above, it is placed in the position of the billet 5 and a new billet is put in the position of the billet 6, thus the part is formed by the same procedure.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12399878A JPS5550944A (en) | 1978-10-07 | 1978-10-07 | Warm forging and forming method of holed parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12399878A JPS5550944A (en) | 1978-10-07 | 1978-10-07 | Warm forging and forming method of holed parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5550944A true JPS5550944A (en) | 1980-04-14 |
Family
ID=14874498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12399878A Pending JPS5550944A (en) | 1978-10-07 | 1978-10-07 | Warm forging and forming method of holed parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5550944A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699261A (en) * | 2012-06-08 | 2012-10-03 | 盐城理研精密锻造有限公司 | Method for forging central hole of spline shaft forging |
| CN104139151A (en) * | 2014-06-26 | 2014-11-12 | 中国矿业大学 | Warming forging precision forming manufacture process for steering bearing ring of motorcycle |
| JP2015120191A (en) * | 2013-12-25 | 2015-07-02 | 三習工業株式会社 | Press device and roller manufacturing method using the same |
-
1978
- 1978-10-07 JP JP12399878A patent/JPS5550944A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699261A (en) * | 2012-06-08 | 2012-10-03 | 盐城理研精密锻造有限公司 | Method for forging central hole of spline shaft forging |
| JP2015120191A (en) * | 2013-12-25 | 2015-07-02 | 三習工業株式会社 | Press device and roller manufacturing method using the same |
| CN104139151A (en) * | 2014-06-26 | 2014-11-12 | 中国矿业大学 | Warming forging precision forming manufacture process for steering bearing ring of motorcycle |
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