IT1255346B - PROCEDURE FOR THE PERMANENT BENDING OF DEFORMABLE BODIES - Google Patents

PROCEDURE FOR THE PERMANENT BENDING OF DEFORMABLE BODIES

Info

Publication number
IT1255346B
IT1255346B ITMI921731A ITMI921731A IT1255346B IT 1255346 B IT1255346 B IT 1255346B IT MI921731 A ITMI921731 A IT MI921731A IT MI921731 A ITMI921731 A IT MI921731A IT 1255346 B IT1255346 B IT 1255346B
Authority
IT
Italy
Prior art keywords
angular displacement
plastic deformation
deformation
procedure
fixing
Prior art date
Application number
ITMI921731A
Other languages
Italian (it)
Inventor
Erick Dietmar
Original Assignee
Brasil Compressores Sa
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 Brasil Compressores Sa filed Critical Brasil Compressores Sa
Publication of ITMI921731A0 publication Critical patent/ITMI921731A0/en
Publication of ITMI921731A1 publication Critical patent/ITMI921731A1/en
Application granted granted Critical
Publication of IT1255346B publication Critical patent/IT1255346B/en

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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • 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
    • 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
    • B21D7/14—Bending rods, profiles, or tubes combined with measuring of bends or lengths

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Prostheses (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Compressor (AREA)

Abstract

Procedimento per la piegatura permanente di corpi deformabili, al fine di definire in detti corpi allungati due porzioni in angolo diedrico e unite l'una all'altra tramite una linea di piegatura, che è almeno sostanzialmente trasversale all'asse longitudinale di detto corpo. Il presente procedimento comprende le fasi di: l.fissare, sperimentalmente, la curva standard dello "spostamento angolare x deformazione plastica per la configurazione del corpo da piegare; 2.impartire ad una porzione libera di ciascun corpo un primo spostamento angolare, per un angolo corrispondente all'ottenimento di un valore di deformazione situato in uno degli intervalli tra il 60% e il 90% e tra il 110% e 120% della deformazione angolare plastica desiderata;3.misurare il grado della deformazione plastica ottenuta con lo spostamento angolare precedente che è stato impartito a detta porzione libera del corpo;4.fissare, in base a detto grado di deformazione plastica, una nuova equazione per la curva dello "spostamento angolare x deformazione plastica", che sia specifica per il corpo nella rispettiva fase di piegatura e definire, matematicamente, uno spostamento angolare addizionale che è necessario per ottenere la deformazione plastica desiderata;Procedure for the permanent folding of deformable bodies, in order to define in said elongated bodies two portions in dihedral angle and joined to each other by means of a folding line, which is at least substantially transverse to the longitudinal axis of said body. The present process comprises the steps of: 1. experimentally fixing the standard curve of the "angular displacement x plastic deformation for the configuration of the body to be bent; 2. imparting to a free portion of each body a first angular displacement, for an angle corresponding to obtaining a deformation value located in one of the intervals between 60% and 90% and between 110% and 120% of the desired plastic angular deformation; 3.measure the degree of plastic deformation obtained with the previous angular displacement which has been imparted to said free portion of the body; 4.fixing, based on said degree of plastic deformation, a new equation for the curve of the "angular displacement x plastic deformation", which is specific to the body in the respective bending phase and defining, mathematically, an additional angular displacement which is necessary to obtain the desired plastic deformation;

ITMI921731A 1991-08-30 1992-07-16 PROCEDURE FOR THE PERMANENT BENDING OF DEFORMABLE BODIES IT1255346B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR919103814A BR9103814A (en) 1991-08-30 1991-08-30 PLASTICALLY DEFORMABLE BODY BENDING PROCESS

Publications (3)

Publication Number Publication Date
ITMI921731A0 ITMI921731A0 (en) 1992-07-16
ITMI921731A1 ITMI921731A1 (en) 1994-01-16
IT1255346B true IT1255346B (en) 1995-10-31

Family

ID=4052719

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI921731A IT1255346B (en) 1991-08-30 1992-07-16 PROCEDURE FOR THE PERMANENT BENDING OF DEFORMABLE BODIES

Country Status (10)

Country Link
JP (2) JP3454480B2 (en)
KR (1) KR100244593B1 (en)
CN (1) CN1037497C (en)
AT (1) AT404100B (en)
BR (1) BR9103814A (en)
DE (1) DE4228566B4 (en)
ES (1) ES2060520B1 (en)
FR (1) FR2680711B1 (en)
GB (1) GB2259037B (en)
IT (1) IT1255346B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330783A1 (en) * 1993-09-10 1995-03-16 Otto Bihler Actuator in a processing machine
JPH07328723A (en) * 1994-06-03 1995-12-19 Kazunari Inoue Method for bending sheet by press brake, etc. and portable bending angle measuring unit to be used thereof
WO2004108318A1 (en) * 2003-06-04 2004-12-16 Finn-Power Oy System for metering the bending angle in a machine for bending metallic sheets and/or sections, as well as method and machine for bending metallic sheets and/or sections using such system
DE102004043174A1 (en) * 2004-09-03 2006-03-09 Siemens Ag Method and device for producing a bent lever wire
CN105598223A (en) * 2014-11-25 2016-05-25 无锡市恒盛电机有限公司 Rolling type metal plate bending device
CN105689443A (en) * 2014-11-25 2016-06-22 无锡市恒盛电机有限公司 Intelligent-detection-based sheet metal bending processing device
CN105618523A (en) * 2014-11-25 2016-06-01 无锡市恒盛电机有限公司 Metal plate bending device
CN104785583A (en) * 2015-04-14 2015-07-22 四川和鼎环保工程有限责任公司 Photovoltaic plate covering processing device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098896B (en) * 1959-10-29 1961-02-09 Siemens Ag Control for bending machines
DE1627472A1 (en) * 1967-12-14 1970-12-10 Banning Ag Maschinenfabrik J Automatic control for a driven tool for cold-forming bending or bending of a workpiece made of metal, especially steel
DE1810533C2 (en) * 1968-11-23 1983-05-19 Carl Ullrich Dr. 5600 Wuppertal Peddinghaus Bending machine for bars, wires and profiles made of metal
FR2085483A1 (en) * 1970-04-24 1971-12-24 Vallourec Tube bending appts - allowing for relaxation of the bend dug to the resilience of the tube
US3821525A (en) * 1972-03-16 1974-06-28 Conrac Corp Method and apparatus for automatically compensated tube bending
US4131003A (en) * 1977-06-07 1978-12-26 The Boeing Company Semiautomatic control system for tube bending machine
GB8303954D0 (en) * 1983-02-12 1983-03-16 Pa Management Consult Bending metal strip
JPH0661583B2 (en) * 1987-06-10 1994-08-17 末弘 水河 Bending method of band blade
DE3739173A1 (en) * 1987-11-19 1989-06-01 Feintool Int Holding METHOD AND DEVICE FOR BENDING WORKPIECES
EP0401819A3 (en) * 1989-06-08 1991-06-26 Rasi Maschinenbau Und -Handels Gmbh Method of bending tubes
BR9002967A (en) * 1990-06-19 1991-12-24 Brasil Compressores Sa VALVE FOR HERMETIC COOLING COMPRESSOR

Also Published As

Publication number Publication date
DE4228566B4 (en) 2005-05-25
ES2060520B1 (en) 1998-05-01
JP2003275821A (en) 2003-09-30
DE4228566A1 (en) 1993-03-04
AT404100B (en) 1998-08-25
ES2060520A2 (en) 1994-11-16
BR9103814A (en) 1993-03-30
CN1037497C (en) 1998-02-25
CN1071862A (en) 1993-05-12
ITMI921731A0 (en) 1992-07-16
GB9217193D0 (en) 1992-09-23
FR2680711B1 (en) 1995-02-17
ITMI921731A1 (en) 1994-01-16
FR2680711A1 (en) 1993-03-05
ATA172892A (en) 1998-01-15
KR930003985A (en) 1993-03-22
ES2060520R (en) 1997-07-01
GB2259037B (en) 1995-03-01
JPH05212448A (en) 1993-08-24
KR100244593B1 (en) 2000-03-02
GB2259037A (en) 1993-03-03
JP3454480B2 (en) 2003-10-06

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970625