GB1146084A - Fixture for stretching sheet metal - Google Patents

Fixture for stretching sheet metal

Info

Publication number
GB1146084A
GB1146084A GB21724/67A GB2172467A GB1146084A GB 1146084 A GB1146084 A GB 1146084A GB 21724/67 A GB21724/67 A GB 21724/67A GB 2172467 A GB2172467 A GB 2172467A GB 1146084 A GB1146084 A GB 1146084A
Authority
GB
United Kingdom
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
Application number
GB21724/67A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cyril Bath Co
Original Assignee
Cyril Bath Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cyril Bath Co filed Critical Cyril Bath Co
Publication of GB1146084A publication Critical patent/GB1146084A/en
Expired legal-status Critical Current

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

1,146,084. Stretching; stamping. CYRIL BATH CO. 10 May, 1967 [16 May, 1966], No. 21724/67. Headings B3E and B3Q. 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.
GB21724/67A 1966-05-16 1967-05-10 Fixture for stretching sheet metal Expired GB1146084A (en)

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
GB1146084A true GB1146084A (en) 1969-03-19

Family

ID=24197507

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21724/67A Expired GB1146084A (en) 1966-05-16 1967-05-10 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
NL6706751A (en) 1967-11-17
FR1522910A (en) 1968-04-26
ES340582A1 (en) 1968-06-16
US3393548A (en) 1968-07-23
BE698448A (en) 1967-10-16

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