JPS55128341A - Precise forging press - Google Patents
Precise forging pressInfo
- Publication number
- JPS55128341A JPS55128341A JP3742479A JP3742479A JPS55128341A JP S55128341 A JPS55128341 A JP S55128341A JP 3742479 A JP3742479 A JP 3742479A JP 3742479 A JP3742479 A JP 3742479A JP S55128341 A JPS55128341 A JP S55128341A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- forging
- target voltage
- punches
- difference
- 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
Landscapes
- Forging (AREA)
Abstract
PURPOSE: To make the transformation flow condition of forged article constant and to enable to be obtained the product having a good dimension accuracy, by changing the punch position to voltage and comparing with the voltage from target voltage generation apparatus and then, controlling the movement of the punch in forging.
CONSTITUTION: Voltage of the potentiometers 7a, 7b indicating the pushing amount of the upper and lower punches 4, 5 in metal mold, is compared with the target voltage from the target voltage generating apparatus 23 at the X1, X2 parts. Difference of the above voltage is amplified by the amplifiers 21a, 21b and is inputted in the servo valves 22a, 22b. The upper and lower auxiliary rams 7, 8 are driven by oil pressure respectively so as to be eliminated the difference and the punches 4, 5 are controlled according to the target voltage. On this occasion, outline of the template 24 is made suitable from forging start position to finish position and movements of the punches 4, 5 are able to control extending over the whole process of forging by moving in forging process.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3742479A JPS55128341A (en) | 1979-03-29 | 1979-03-29 | Precise forging press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3742479A JPS55128341A (en) | 1979-03-29 | 1979-03-29 | Precise forging press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55128341A true JPS55128341A (en) | 1980-10-04 |
| JPS6125449B2 JPS6125449B2 (en) | 1986-06-16 |
Family
ID=12497129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3742479A Granted JPS55128341A (en) | 1979-03-29 | 1979-03-29 | Precise forging press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55128341A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130642A (en) * | 1983-01-14 | 1984-07-27 | Koyo Seiko Co Ltd | Hydraulically driven closed forging machine |
| JPH0490142U (en) * | 1991-04-03 | 1992-08-06 | ||
| US6349582B2 (en) * | 1998-05-06 | 2002-02-26 | Komatsu, Ltd. | Die system for full enclosed die forging |
| US20110192210A1 (en) * | 2004-09-08 | 2011-08-11 | Nobuyoshi Yamashita | Shaft member for fluid lubrication bearing apparatuses and a method for producing the same |
| CN102974732A (en) * | 2012-12-11 | 2013-03-20 | 阎善武 | Forged hydraulic press and method |
-
1979
- 1979-03-29 JP JP3742479A patent/JPS55128341A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59130642A (en) * | 1983-01-14 | 1984-07-27 | Koyo Seiko Co Ltd | Hydraulically driven closed forging machine |
| JPH0490142U (en) * | 1991-04-03 | 1992-08-06 | ||
| US6349582B2 (en) * | 1998-05-06 | 2002-02-26 | Komatsu, Ltd. | Die system for full enclosed die forging |
| US20110192210A1 (en) * | 2004-09-08 | 2011-08-11 | Nobuyoshi Yamashita | Shaft member for fluid lubrication bearing apparatuses and a method for producing the same |
| US8387246B2 (en) * | 2004-09-08 | 2013-03-05 | Ntn Corporation | Shaft member for fluid lubrication bearing apparatuses and a method for producing the same |
| CN102974732A (en) * | 2012-12-11 | 2013-03-20 | 阎善武 | Forged hydraulic press and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6125449B2 (en) | 1986-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS57142726A (en) | One stroke multiple stage forming press | |
| JPS55128341A (en) | Precise forging press | |
| ES485531A1 (en) | Forging press | |
| JPS5762873A (en) | Production of laminated iron core | |
| GB2015773A (en) | Hydraulic press | |
| JPS5650744A (en) | Closed forging method making use of double-acting press | |
| JPS5555819A (en) | Hydraulic forming die for thin shape bent pipe and forming method | |
| JPS5570420A (en) | Forming method for thick walled uo steel pipe | |
| JPS5653842A (en) | Die position control device of forging machine | |
| JPS5568131A (en) | Forming method of bellows | |
| JPS6462219A (en) | Shape straightening method for thin steel sheet | |
| JPS5653841A (en) | Die position control device of forging machine | |
| JPS54132458A (en) | Method and apparatus for u-forming work in manufacturing process for u-o steel pipe | |
| JPS5680329A (en) | Hydraulic forging device | |
| Duszczyk | Double-Action Compaction Under Industrial Conditions | |
| JPS54117357A (en) | Metod and apparatus for controlling sheet crown and shape in continuous rolling mill | |
| JPS5577909A (en) | Direct forming method for continuously cast bloom | |
| Komatsu | Research and Development of Multi Direction Forging Machine(M. D. F.) | |
| JPS5770049A (en) | Formation device for outer race of constant velocity | |
| JPS5644903A (en) | Control method of working machine | |
| SU774689A1 (en) | Female die for flanging sheet workpiecies | |
| JPS5677024A (en) | Formation of bellows | |
| Kucheryaev et al. | The Kinematic Parameters of Rolling with Spread | |
| JPS5732820A (en) | Scale removing method for hot rolled steel plate | |
| JPS56111536A (en) | Device for progressive die forging |