EP1154869A1 - Method and apparatus for bending a profiled metal element while limiting deformation of its cross-sectional shape - Google Patents

Method and apparatus for bending a profiled metal element while limiting deformation of its cross-sectional shape

Info

Publication number
EP1154869A1
EP1154869A1 EP00901098A EP00901098A EP1154869A1 EP 1154869 A1 EP1154869 A1 EP 1154869A1 EP 00901098 A EP00901098 A EP 00901098A EP 00901098 A EP00901098 A EP 00901098A EP 1154869 A1 EP1154869 A1 EP 1154869A1
Authority
EP
European Patent Office
Prior art keywords
bending
metal element
cross
profiled metal
sectional shape
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.)
Withdrawn
Application number
EP00901098A
Other languages
German (de)
English (en)
French (fr)
Inventor
Pietro Passone
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.)
EMARC SpA
Original Assignee
EMARC SpA
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 EMARC SpA filed Critical EMARC SpA
Publication of EP1154869A1 publication Critical patent/EP1154869A1/en
Withdrawn legal-status Critical Current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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • 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
    • B21D7/03—Apparatus with means to keep the profile in shape

Definitions

  • the present invention relates to a procedure for bending a profiled metal element in one or more dimensions and associated apparatus .
  • the object of the invention is to provide a procedure of the above type whereby bending a profiled metal element, notably by drawing, does not carry the side effect of deforming the cross- sectional shape thereof.
  • This object is achieved thanks to a bending procedure characterised in that it exerts a restraining force on the said profiled metal element in a direction substantially orthogonal to that of the forces causing the bend, at the time that they are acting.
  • This restraining force counters the tendency of the cross section of the element to become deformed, thus ensuring that it retains its original shape.
  • Profile elements of an open or partially closed type are suited to the procedure of the invention.
  • a further object of the invention comprises apparatus for carrying out the aforesaid procedure, including means for exerting on the element to be bent a restraining force in a direction substantially orthogonal to that of the forces causing the bend.
  • Figure 1 is a perspective view of a profiled metal element to be bent by the procedure of the invention.
  • Figure 2 is a view in section, taken on the line II-II of Figure 1, of the profiled element arranged on apparatus operable to carry out the procedure of the invention.
  • An elongate profiled metal element 10, having a W-shape in cross section (see Figure 1) is to be bent in several dimensions as shown by the arrows 14.
  • apparatus which is known per se in the art and is only schematically illustrated in figure 2 , and includes a template 16 having the shape to be imparted to the metal element and a series of dies 18 operated by respective actuators 20 able to press the element 10 against the template 16.
  • the surfaces of the template 16 and of the dies 18 intended to come into contact with the element 10 match the shape of the latter in order to provide adequate support during the bending procedure .
  • the apparatus also includes means for exerting a restraining force on the element 10 in a direction substantially orthogonal to that of the forces causing the bend by drawing.
  • These restraining means comprise pincers 22 located in recesses 24 formed along both sides of the template 16 and having jaws 26 able to grip the transverse edge regions of the element 10.
  • the jaws 26 of the pincers 22 are operated by respective actuators 28, which may be mechanically, pneumatically hydraulically or electrically operated.
  • the pincers can be replaced by vices, operated by mechanical lever systems instead of actuators .
  • the jaws 26 of the pincers 22 hold the edge regions of the element 10 against the template 16 so that the forces exerted by the dies 18 produce the required bend by drawing the element 10 without deforming its cross-sectional shape.
  • the bending of the profiled element can take place also only in one dimension, the longitudinal axis of the element remaining in the plane wherein it was originally.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Golf Clubs (AREA)
EP00901098A 1999-01-18 2000-01-13 Method and apparatus for bending a profiled metal element while limiting deformation of its cross-sectional shape Withdrawn EP1154869A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTO990034 IT1306993B1 (it) 1999-01-18 1999-01-18 Procedimento per la curvatura di un elemento profilato metallico concontenimento delle deformazioni della sua sezione e relativa
ITTO990034 1999-01-18
PCT/EP2000/000208 WO2000041825A1 (en) 1999-01-18 2000-01-13 A procedure for bending a profiled metal element while limiting deformation of its cross-sectional shape

Publications (1)

Publication Number Publication Date
EP1154869A1 true EP1154869A1 (en) 2001-11-21

Family

ID=11417355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00901098A Withdrawn EP1154869A1 (en) 1999-01-18 2000-01-13 Method and apparatus for bending a profiled metal element while limiting deformation of its cross-sectional shape

Country Status (14)

Country Link
EP (1) EP1154869A1 (enExample)
JP (1) JP2002534270A (enExample)
CN (1) CN1336854A (enExample)
AU (1) AU2108400A (enExample)
BR (1) BR0008894A (enExample)
CA (1) CA2359341A1 (enExample)
CZ (1) CZ20012619A3 (enExample)
IT (1) IT1306993B1 (enExample)
MX (1) MXPA01007258A (enExample)
PL (1) PL348894A1 (enExample)
RU (1) RU2001123238A (enExample)
SK (1) SK10162001A3 (enExample)
WO (1) WO2000041825A1 (enExample)
YU (1) YU48601A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104588458B (zh) * 2014-12-26 2017-02-22 西安轨道交通装备有限责任公司 一种压制油罐车防波板的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1721964A (en) * 1926-08-26 1929-07-23 George R Mcalfenan Method of and apparatus for bending structural shapes
GB982694A (en) * 1961-05-19 1965-02-10 Reynolds Metals Co Method and apparatus for producing automotive vehicle bumpers
DE1527336A1 (de) * 1965-09-21 1969-04-24 Hamburger Flugzeugbau Gmbh Universalpresswerkzeug
JPS4623729Y1 (enExample) * 1968-04-19 1971-08-16
AT334160B (de) * 1973-09-07 1976-01-10 Paweck Ag Werkzeug zum biegen von werkstucken, wie rohre und profilstabe
JPS57137029A (en) * 1981-02-19 1982-08-24 Sanwa Koki Kk Working device for press machine
JP3035025B2 (ja) * 1991-08-30 2000-04-17 不二サッシ株式会社 型材曲げ機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0041825A1 *

Also Published As

Publication number Publication date
PL348894A1 (en) 2002-06-17
CZ20012619A3 (cs) 2002-02-13
IT1306993B1 (it) 2001-10-11
AU2108400A (en) 2000-08-01
MXPA01007258A (es) 2003-06-06
CN1336854A (zh) 2002-02-20
WO2000041825A1 (en) 2000-07-20
BR0008894A (pt) 2001-10-30
RU2001123238A (ru) 2003-08-10
YU48601A (sh) 2003-12-31
JP2002534270A (ja) 2002-10-15
SK10162001A3 (sk) 2001-12-03
ITTO990034A1 (it) 2000-07-18
CA2359341A1 (en) 2000-07-20

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