GB1489257A - Precision bending of metals - Google Patents
Precision bending of metalsInfo
- Publication number
- GB1489257A GB1489257A GB55788/74A GB5578874A GB1489257A GB 1489257 A GB1489257 A GB 1489257A GB 55788/74 A GB55788/74 A GB 55788/74A GB 5578874 A GB5578874 A GB 5578874A GB 1489257 A GB1489257 A GB 1489257A
- Authority
- GB
- United Kingdom
- Prior art keywords
- die
- workpiece
- rollers
- bending
- counter
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
1489257 Bending sheet metal NIPPON KOKAN KK and T NAKAGAWA 24 Dec 1974 [27 Dec 1973] 55788/74 Heading B3E That part of a workpiece 14 which is deformed during bending is subjected during bending to a compressive stress in the direction of its thickness, the stress being applied on the tension side in the region of plastic deformation. In Fig. 12, the descent of a die 11 under force Fb is opposed by a counter die 13 subject to a pneumatically or hydraulically generated opposing force to produce a counter-pressure Fc, whereby as the work is bent about die 11 by rollers 16a, 16b, it is subject to compression at the bend 15. The distance Do-2 between the lines of action of the rollers, either at the finish of bending as shown, or at the start when the work is laid across the rollers, should be between 3À5 and 6 times the thickness of the workpiece. The upper surface of the counter die may be flat, concave, or convex, and be curved, or V-shaped. Cracking of the workpiece and various defects of shape in the bend are stated to be avoided.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14427573A JPS5311273B2 (en) | 1973-12-27 | 1973-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1489257A true GB1489257A (en) | 1977-10-19 |
Family
ID=15358288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB55788/74A Expired GB1489257A (en) | 1973-12-27 | 1974-12-24 | Precision bending of metals |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5311273B2 (en) |
| DE (1) | DE2461538B2 (en) |
| GB (1) | GB1489257A (en) |
| SE (1) | SE414128B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT390575B (en) * | 1988-04-25 | 1990-05-25 | Haemmerle Ag | METHOD FOR BENDING A WORKPIECE |
| GB2278795A (en) * | 1993-06-12 | 1994-12-14 | Douglas Roger Hawkey | Apparatus and method for working materials |
| EP3165297A1 (en) * | 2015-11-03 | 2017-05-10 | SSAB Technology AB | Bending method |
| CN113056236A (en) * | 2018-11-08 | 2021-06-29 | 尼奥医疗公司 | Orthopedic rod bender |
| CN113790977A (en) * | 2021-08-10 | 2021-12-14 | 武汉钢铁有限公司 | Method for measuring ultimate bending fracture strain of metal plate |
| CN114700395A (en) * | 2022-04-12 | 2022-07-05 | 陕西中桥明智能科技有限公司 | Steel plate ring bending equipment |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133339U (en) * | 1975-04-17 | 1976-10-27 | ||
| JPS51134363A (en) * | 1975-05-19 | 1976-11-20 | Aida Eng Ltd | Precision bending method |
| JPS5949879U (en) * | 1982-09-28 | 1984-04-02 | 三幸商事株式会社 | Fixtures for insulation materials |
| DE3629270A1 (en) * | 1985-09-10 | 1987-03-19 | Volkswagen Ag | Apparatus for the wear-free forming of dimensionally accurate sheet-metal components with an at least approximately L-shaped or U-shaped cross-section from sheet-metal blanks or sheet-metal parts |
| AT389829B (en) * | 1988-05-03 | 1990-02-12 | Haemmerle Ag | METHOD FOR BENDING SHEET PIECES WITH THE AID OF A BENDING DEVICE |
| DE9315577U1 (en) * | 1993-10-08 | 1994-02-10 | Wanzke, Manfred, 63843 Niedernberg | Tool for forming sheet metal parts |
| JP3550941B2 (en) * | 1997-04-25 | 2004-08-04 | トヨタ自動車株式会社 | Press bending method and apparatus |
| JP3550942B2 (en) * | 1997-05-08 | 2004-08-04 | トヨタ自動車株式会社 | Press bending method and apparatus |
| WO2002094470A1 (en) | 2001-05-21 | 2002-11-28 | Trumpf Pulzer Gmbh + Co. Kg | Device for bending closed hollow profiles in peripheral direction |
| WO2020262684A1 (en) * | 2019-06-28 | 2020-12-30 | 川崎重工業株式会社 | Press brake, and method for operating press brake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127212A (en) * | 1974-08-21 | 1976-03-06 | Hitachi Ltd | DENKISHA SEIGYOSOCHI |
-
1973
- 1973-12-27 JP JP14427573A patent/JPS5311273B2/ja not_active Expired
-
1974
- 1974-12-24 GB GB55788/74A patent/GB1489257A/en not_active Expired
- 1974-12-27 SE SE7416333A patent/SE414128B/en not_active IP Right Cessation
- 1974-12-27 DE DE742461538A patent/DE2461538B2/en active Granted
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT390575B (en) * | 1988-04-25 | 1990-05-25 | Haemmerle Ag | METHOD FOR BENDING A WORKPIECE |
| GB2278795A (en) * | 1993-06-12 | 1994-12-14 | Douglas Roger Hawkey | Apparatus and method for working materials |
| GB2278795B (en) * | 1993-06-12 | 1996-10-02 | Douglas Roger Hawkey | Apparatus and method for working materials |
| EP3165297A1 (en) * | 2015-11-03 | 2017-05-10 | SSAB Technology AB | Bending method |
| US11633770B2 (en) | 2015-11-03 | 2023-04-25 | Ssab Technology Ab | Bending method |
| CN113056236A (en) * | 2018-11-08 | 2021-06-29 | 尼奥医疗公司 | Orthopedic rod bender |
| CN113790977A (en) * | 2021-08-10 | 2021-12-14 | 武汉钢铁有限公司 | Method for measuring ultimate bending fracture strain of metal plate |
| CN113790977B (en) * | 2021-08-10 | 2023-07-07 | 武汉钢铁有限公司 | Method for measuring ultimate bending fracture strain of sheet metal |
| CN114700395A (en) * | 2022-04-12 | 2022-07-05 | 陕西中桥明智能科技有限公司 | Steel plate ring bending equipment |
| CN114700395B (en) * | 2022-04-12 | 2024-01-09 | 山东荣煜环保科技有限公司 | Steel plate ring bending equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2461538C3 (en) | 1979-10-31 |
| DE2461538A1 (en) | 1975-07-03 |
| SE7416333L (en) | 1975-06-30 |
| JPS5311273B2 (en) | 1978-04-20 |
| DE2461538B2 (en) | 1979-03-08 |
| JPS5095171A (en) | 1975-07-29 |
| SE414128B (en) | 1980-07-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19941223 |