ES340582A1 - Fixture for stretching sheet metal - Google Patents
Fixture for stretching sheet metalInfo
- Publication number
- ES340582A1 ES340582A1 ES340582A ES340582A ES340582A1 ES 340582 A1 ES340582 A1 ES 340582A1 ES 340582 A ES340582 A ES 340582A ES 340582 A ES340582 A ES 340582A ES 340582 A1 ES340582 A1 ES 340582A1
- Authority
- ES
- Spain
- Prior art keywords
- head
- links
- stretch
- die
- heads
- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/02—Bending by stretching or pulling over a die
-
- 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
- B21D25/00—Working sheet metal of limited length by stretching, e.g. for straightening
- B21D25/02—Working sheet metal of limited length by stretching, e.g. for straightening by pulling over a die
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
A tensioning unit comprises a stretch head adapted to grip a margin of a sheet of metal stock and operable for tensioning the stock upon predetermined movement of the head from a starting position, and a parallelogram or other quadrilateral linkage means pivotally connected at one end to the head and at its opposite end to a supporting structure. A stretch head 30 comprises a body 31, 40 carrying rams 32, 32a opened and closed by links 33, 34. The body 31, 40 is carried by one or more pairs of pivoted parallel links 42, 47 by an elevator 20 moved vertically by piston and cylinder means 21. A stretch head 30 is provided at each side of a fixed male die 5 and is connected thereto by pivoted links 60, 63 so that as the heads 30 are lowered tension is applied thereto to stretch the sheet over the die 5. A female die 6 may be lowered to co-operate with the die 5. Tension may be applied to the heads by hydraulic cylinders connected to the links 42, 47.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US550520A US3393548A (en) | 1966-05-16 | 1966-05-16 | Fixture for stretching sheet metal |
Publications (1)
Publication Number | Publication Date |
---|---|
ES340582A1 true ES340582A1 (en) | 1968-06-16 |
Family
ID=24197507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES340582A Expired ES340582A1 (en) | 1966-05-16 | 1967-05-16 | Fixture for stretching sheet metal |
Country Status (6)
Country | Link |
---|---|
US (1) | US3393548A (en) |
BE (1) | BE698448A (en) |
ES (1) | ES340582A1 (en) |
FR (1) | FR1522910A (en) |
GB (1) | GB1146084A (en) |
NL (1) | NL6706751A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3677057A (en) * | 1970-12-04 | 1972-07-18 | Robert A Mackenzie | Draw forming |
US3908428A (en) * | 1974-01-18 | 1975-09-30 | Robert A Mackenzie | Stretch-draw metal forming |
US5465600A (en) * | 1994-05-20 | 1995-11-14 | Ford Motor Company | Die assembly |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2442268A (en) * | 1942-07-16 | 1948-05-25 | Bocing Aircraft Company | Apparatus for stretch bending structural elements |
US3113607A (en) * | 1960-12-19 | 1963-12-10 | Cyril Bath Co | Prestretch forming fixture for drawing die press |
US3314270A (en) * | 1964-10-02 | 1967-04-18 | Cyril Bath Co | Gripping jaws for gripping sheet metal |
US3316780A (en) * | 1966-01-14 | 1967-05-02 | Edward C Herkner | Broken rifle shell extractor |
-
1966
- 1966-05-16 US US550520A patent/US3393548A/en not_active Expired - Lifetime
-
1967
- 1967-05-10 GB GB21724/67A patent/GB1146084A/en not_active Expired
- 1967-05-12 BE BE698448D patent/BE698448A/xx unknown
- 1967-05-12 FR FR106397A patent/FR1522910A/en not_active Expired
- 1967-05-16 ES ES340582A patent/ES340582A1/en not_active Expired
- 1967-05-16 NL NL6706751A patent/NL6706751A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US3393548A (en) | 1968-07-23 |
GB1146084A (en) | 1969-03-19 |
BE698448A (en) | 1967-10-16 |
FR1522910A (en) | 1968-04-26 |
NL6706751A (en) | 1967-11-17 |
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