GB1133103A - Improvements in or relating to tube bending machines - Google Patents

Improvements in or relating to tube bending machines

Info

Publication number
GB1133103A
GB1133103A GB1036866A GB1036866A GB1133103A GB 1133103 A GB1133103 A GB 1133103A GB 1036866 A GB1036866 A GB 1036866A GB 1036866 A GB1036866 A GB 1036866A GB 1133103 A GB1133103 A GB 1133103A
Authority
GB
United Kingdom
Prior art keywords
pressure
tube
jaw
cylinder
fluid
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
GB1036866A
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.)
Hilgers Masch & App Bauanstalt
Original Assignee
Hilgers Masch & App Bauanstalt
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 Hilgers Masch & App Bauanstalt filed Critical Hilgers Masch & App Bauanstalt
Publication of GB1133103A publication Critical patent/GB1133103A/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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
    • B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
    • B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member

Landscapes

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

Abstract

1,133,103. Tube bending machine. HILGERS MASCHINEN UND APPARATE BAUANSTALT m.b.H. 9 March, 1966 [15 April, 1965], No. 10368/66. Heading B3E. A tube bending machine comprises a tube clamping jaw 13 which is moved into the tube clamping position by hydraulic fluid supplied to a cylinder 14 at low pressure, and an arrangement which, when the jaw is in the clamping position, connects the cylinder 14 to a source 27 of high-pressure hydraulic fluid enabling a small cylinder 14 to exert a large clamping force. The low-pressure fluid is supplied by a pump 20 which also supplies fluid to operate the remainder of the machine. When the jaw has been moved into the clamping position a valve 23 is actuated by a pressure relief valve 22 and automatically shuts off the low-pressure supply to the cylinder 14. A motor 26 driving a highpressure pump 27 is simultaneously started to supply high-pressure fluid which exerts a high clamping force on the jaw 13. When the tube is clamped fluid pressure is supplied to one of a pair of cylinders 18, 19 to rotate a shaft 11 through a chain 17. This causes an assembly comprising the cylinder 14, the jaw 13, and a bending pattern (12, Figs. 1 and 2) to which the tube is clamped, to rotate drawing the tube through a slideway (16) and bending it to the profile of the pattern (12). In another embodiment (not shown) a pressure intensifier is used as a source of high-pressure fluid.
GB1036866A 1965-04-15 1966-03-09 Improvements in or relating to tube bending machines Expired GB1133103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0055804 1965-04-15

Publications (1)

Publication Number Publication Date
GB1133103A true GB1133103A (en) 1968-11-06

Family

ID=7159149

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1036866A Expired GB1133103A (en) 1965-04-15 1966-03-09 Improvements in or relating to tube bending machines

Country Status (2)

Country Link
DE (1) DE1527333B2 (en)
GB (1) GB1133103A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098106A (en) * 1975-07-08 1978-07-04 Daiichi Koshuha Kogyo Kabushiki Kaisha Bending method and apparatus with slidable clamp
US4355525A (en) * 1979-09-04 1982-10-26 Carson James W Production tube bending machine
CN103978079B (en) * 2014-05-23 2015-12-30 浙江国华家具有限公司 Leisure chair leg crooked radian micromatic setting

Also Published As

Publication number Publication date
DE1527333B2 (en) 1973-06-07
DE1527333A1 (en) 1969-09-11

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