GB1403539A - Straightening elongated articles - Google Patents

Straightening elongated articles

Info

Publication number
GB1403539A
GB1403539A GB3687872A GB3687872A GB1403539A GB 1403539 A GB1403539 A GB 1403539A GB 3687872 A GB3687872 A GB 3687872A GB 3687872 A GB3687872 A GB 3687872A GB 1403539 A GB1403539 A GB 1403539A
Authority
GB
United Kingdom
Prior art keywords
article
die
blank
chuck
straight configuration
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
GB3687872A
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.)
GKN Group Services Ltd
Original Assignee
GKN Group Services Ltd
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 GKN Group Services Ltd filed Critical GKN Group Services Ltd
Priority to GB3687872A priority Critical patent/GB1403539A/en
Priority to IT12780/73A priority patent/IT992320B/en
Priority to FR7328805A priority patent/FR2195486B3/fr
Priority to US386799A priority patent/US3884065A/en
Priority to JP48089179A priority patent/JPS4991952A/ja
Priority to DE19732340153 priority patent/DE2340153A1/en
Publication of GB1403539A publication Critical patent/GB1403539A/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
    • B21D11/14—Twisting
    • 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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/12—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by stretching with or without twisting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Forging (AREA)

Abstract

1403539 Straightening using torsion GKN GROUP SERVICES Ltd 6 Aug 1973 [8 Aug 1972] 36878/72 Heading B3E A method of straightening a bent elongated article comprises holding the article at both ends and applying a force intermediate the ends at right angles to the longitudinal axis of the article to constrain the latter to take up a straight configuration, and twisting the article about its longitudinal axis to plastically strain the article in torsion so that when the constraint is removed the article retains the straight configuration. A bolt blank 10 has a shank 11 and head 12 held respectively in a die 19 and rotatable chuck 16. A clamping block 14 is used to hold the end of the blank between jaws 35, 36. The die 19 comprises die parts 20, 21 mounted on respective slides 22, 23, the movement of die part 20 being limited by an adjustable stop 28. Die part 21 is resiliently mounted on the slide 23 by pre-loaded bellevile washers 32 encircling a bolt 33 to leave a gap 34 between the slide and die part. An hydraulically operated ejector 39 is used to push the blank on to a ledge 53 when the head 12 is released from the chuck 16. An outer shaft 41 for rotating the chuck 16 is rotated by a rack (51), Fig. 5 (not shown), moved by an hydraulic piston and cylinder assembly (54). The clamping of the ends of the blank is performed by assembly 50 and assembly (37), Fig. 3 (not shown). By adjusting the position of the stop 28, die parts 20, 21 can be arranged to constrain the bolt blank 10 to a straight configuration.
GB3687872A 1972-08-08 1972-08-08 Straightening elongated articles Expired GB1403539A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB3687872A GB1403539A (en) 1972-08-08 1972-08-08 Straightening elongated articles
IT12780/73A IT992320B (en) 1972-08-08 1973-08-02 METHOD AND DEVICE FOR STRAIGHTENING ELONGATED ARTICLES
FR7328805A FR2195486B3 (en) 1972-08-08 1973-08-07
US386799A US3884065A (en) 1972-08-08 1973-08-08 Straightening elongated articles
JP48089179A JPS4991952A (en) 1972-08-08 1973-08-08
DE19732340153 DE2340153A1 (en) 1972-08-08 1973-08-08 METHOD AND DEVICE FOR ALIGNING CURVED LONGITUDINAL OBJECTS CONSTANT CROSS SECTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3687872A GB1403539A (en) 1972-08-08 1972-08-08 Straightening elongated articles

Publications (1)

Publication Number Publication Date
GB1403539A true GB1403539A (en) 1975-08-28

Family

ID=10391919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3687872A Expired GB1403539A (en) 1972-08-08 1972-08-08 Straightening elongated articles

Country Status (6)

Country Link
US (1) US3884065A (en)
JP (1) JPS4991952A (en)
DE (1) DE2340153A1 (en)
FR (1) FR2195486B3 (en)
GB (1) GB1403539A (en)
IT (1) IT992320B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830028C1 (en) * 1988-09-03 1989-12-28 Bayerische Motoren Werke Ag, 8000 Muenchen, De
CN102125948A (en) * 2010-12-27 2011-07-20 东莞市汇雅实业有限公司 Square-tube straightener
CN105772540B (en) * 2016-04-22 2018-06-19 江苏浔丰轨道交通科技有限公司 Subway shield door square tube trimmer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1525730A (en) * 1922-04-18 1925-02-10 Samuel C Gates Method of making spirally-grained seamless tubing
FR1463129A (en) * 1965-11-09 1966-06-03 Cefilac Method and device for straightening and unwinding solid or hollow metal profiles
GB1186201A (en) * 1966-05-05 1970-04-02 Rotary Profile Anstalt The Working of Plastically Deformable Materials.
US3446054A (en) * 1967-01-16 1969-05-27 Whetstine B Pridy Apparatus for straightening elongate metal members
US3603357A (en) * 1968-07-10 1971-09-07 Peter R Drummond Backwiring
US3566640A (en) * 1968-08-26 1971-03-02 Chrysler Corp Inspection and correction apparatus

Also Published As

Publication number Publication date
FR2195486B3 (en) 1976-07-16
US3884065A (en) 1975-05-20
JPS4991952A (en) 1974-09-03
FR2195486A1 (en) 1974-03-08
DE2340153A1 (en) 1974-02-21
IT992320B (en) 1975-09-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees