GB1257672A - - Google Patents
Info
- Publication number
- GB1257672A GB1257672A GB1257672DA GB1257672A GB 1257672 A GB1257672 A GB 1257672A GB 1257672D A GB1257672D A GB 1257672DA GB 1257672 A GB1257672 A GB 1257672A
- Authority
- GB
- United Kingdom
- Prior art keywords
- die
- blank
- rolls
- bending
- blanks
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
- B21D7/028—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and altering the profile at the same time, e.g. forming bumpers
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/04—Bending rods, profiles, or tubes over a movably-arranged forming menber
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
1,257,672. Bending blanks. VYZKUMNY USTAV TVARECICH STROJU A TECHNOLOGIE TVARENI. 7 Feb., 1969 [10 Feb., 1968], No. 6675/69. Heading B3E. Profiled blanks are bent to a configuration consisting of successive portions of curves of different radii of curvature by placing a blank on a bending die, shaping the portions of large radius by means of rolls moving over the surface of the blank on the die and then shaping the portions of small radius by maintaining the rolls stationary and pivoting the die so that the rolls wrap the blank around a part of the die having the small radius. An apparatus for carrying out the method comprises a frame 1 in which is pivoted at 2 an arm 3 carrying rolls 19 in a housing 12 mounted at the end of a cylinder and piston assembly 7, 8, 9 which provides an adjustable force on the blank. A die 30 is mounted on bolsters 29 pivoted about a pin 28, and means is provided for moving the arm 3 from the vertical to an inclined position (shown by chain dotted lines) and for moving the die 30 about pivot pin 28. The bolsters are held in position by blocks (41) Fig. 3 (not shown) during the bending of the blank to a large radius after which they are withdrawn into passages 39 which allows the pivoting of the die about pin 28. The blanks are held on the die by a clamp 38 and one half of a blank is shaped at a time.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS103668 | 1968-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1257672A true GB1257672A (en) | 1971-12-22 |
Family
ID=5343721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1257672D Expired GB1257672A (en) | 1968-02-10 | 1969-02-07 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3559439A (en) |
| DE (1) | DE1905809C3 (en) |
| FR (1) | FR2001707A1 (en) |
| GB (1) | GB1257672A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2221200A1 (en) * | 1973-03-16 | 1974-10-11 | Ponti Off Mec Omp | Machine which press rolls curved sheet steel car bumpers - uses male former which is free to pivot w.r.t. press during operation |
| FR2338750A1 (en) * | 1976-01-26 | 1977-08-19 | Dekoninck Michel | Bent band forming machine - has profiled gauge with clamp on rotatable wheel and power located rollers |
| US4072040A (en) * | 1976-08-05 | 1978-02-07 | Bate & Ramey, Inc. | Pile straightener |
| US9956600B2 (en) * | 2011-08-02 | 2018-05-01 | Fairmount Technologies, Llc | Universal dies of controllable curvature |
-
1969
- 1969-02-05 US US796785A patent/US3559439A/en not_active Expired - Lifetime
- 1969-02-06 DE DE1905809A patent/DE1905809C3/en not_active Expired
- 1969-02-07 GB GB1257672D patent/GB1257672A/en not_active Expired
- 1969-02-10 FR FR6903079A patent/FR2001707A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE1905809B2 (en) | 1978-06-08 |
| DE1905809A1 (en) | 1969-11-27 |
| FR2001707A1 (en) | 1969-09-26 |
| DE1905809C3 (en) | 1979-02-08 |
| US3559439A (en) | 1971-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |