US3661002A - Bending machine for bending reinforcing irons for concrete - Google Patents

Bending machine for bending reinforcing irons for concrete Download PDF

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Publication number
US3661002A
US3661002A US77886A US3661002DA US3661002A US 3661002 A US3661002 A US 3661002A US 77886 A US77886 A US 77886A US 3661002D A US3661002D A US 3661002DA US 3661002 A US3661002 A US 3661002A
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United States
Prior art keywords
bending
potentiometer
rod
angle
potentiometers
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Expired - Lifetime
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US77886A
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English (en)
Inventor
Paul Ferd Peddinghaus Jr
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Firma Paul Ferd Peddinghaus
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Individual
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    • 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
    • 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
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete

Definitions

  • PATENTEDHAY 9 I972 3,661 002 INVENTOR, gal 7 ado/"r1744 03 I? BENDING MACHINE FOR BENDING REINFORCING IRONS FOR CONCRETE
  • the present invention relates to a bending machine with electric adjustment of the bending angle of the bending dish or arm for bending reinforcing iron rods for concrete.
  • the control of the bending angle would also be possible by means of a potentiometer while the preselection of the desired bending angle could be effected by the potentiometer.
  • the dead angle or advance angle is designated as minus 01 and the desired bending angle is while the recoil angle is designated a
  • the total angle a, over which the bending dish or bending arm has to move will be a, 04 a
  • the dead angle a, and the recoil angle a are normally, in contrast to the desired bending angle at not immediately determined or ascertained angles (disregarding a table containing such values on the basis of numerous test bendings). It is rather necessary to ascertain the dead angle and the recoil angle by one or two test bending operations and a corresponding correction of these angles and thereby of the total turning angle of the bending dish or bending arm. This has been taken into consideration by mechanical means and, more specifically, by the application of an adjustable cam below the bending dish.
  • FIGS. 1 and 2 respectively diagrammatically illustrate the bending of a reinforcing iron rod and, more specifically, by 180 and 90.
  • F IG. 3 diagrammatically illustrates the control potentiometer and a dead angle potentiometer preceding the same as well as a recoil potentiometer.
  • the machine for bending iron rods according to the present invention is characterized primarily in that each desired bending angle of the iron rod has associated therewith a control potentiometer while all control potentiometers have in common a dead angle potentiometer and a recoil potentiometer or a composite potentiometer combining said two types of potentiometers. These potentiometers or this potentiometer are so arranged that each control potentiometer which becomes effective is to be connected with the dead angle and recoil potentiometer or with the composite potentiometer.
  • the recoil angle pertaining to the various desired bending angles has a value which is substantially constant with bending angles from about 40 to 180, or the deviations from the desired bending angle are so minor that they can be considered admissible.
  • no variation in the angle to be added for the recoil has to be taken into consideration when the reinforcing iron rods remain of the same dimensions. Consequently, once the angle to be added has been set or adjusted, i. e. the dead angle and the recoil angle, all bending operations between 45 and 180 can be effected. This is accomplished by the preceding potentiometer or the composite potentiometer or by both.
  • the operator operating the bending machine for the reinforcing iron rods will adjust the desired bending angle of, for instance, 45, or and in conformity with his experience will adjust a preceding potentiometer or the two preceding potentiometers, in other words the recoil potentiometer and the dead angle potentiometer. If the bending angle does not meet the requirements, the operator will re-adjust one or both preceding potentiometers and thereupon will repeat the bending operation in order more precisely to ascertain the angle to be added and the respective adjustment. For reinforcing iron rods of identical thickness, the adjustment of the potentiometer for the angle to be added will during the bending of different angles be maintained.
  • connection of the preceding potentiometer or potentiometers is effected.
  • This may be brought about by connecting each setting potentiometer selectively through a common control rod to the dead angle potentiometer or the return potentiometer or to the combined potentiometers.
  • the control rod may be displaceable in longitudinal direction and may be provided with serially arranged connecting contacts, or the control rod may, in a manner known per se, be rotatable about its longitudinal axis and may have its circumference at the level of the potentiometer equipped with connecting contacts.
  • the connecting rod will then act as a control shaft.
  • a counter roll 1 is arranged on the bending table of the machine or a perforated strip of the table, said counter roll 1 being adjustable in the direction of the arrow K.
  • the bending dish carries at its center the shaping roll or shaping member 2 and furthermore in spaced relationship to the member 2 carries the bending roll 3 at the level of the marginal area of the bending dish.
  • the bending roll 3 is in a manner known per se held on the bending dish by means of a stud and in response to the rotation of the bending dish or bending arm first carries out an advancing stroke which corresponds to the dead angle or, until the bending roll reaches its position 3 in which position it engages the end B of the reinforcing iron rod B.
  • the reinforcing iron rod engages the rolls 1 and 3 and, on the other hand, engages the shaping roll or shaping member 2. Subsequently thereto, i. e. after moving through the angle 1.1: the bending dish with roll 3 moves through the angle a; which corresponds to the magnitude of the desired bending angle whereby roll 3 reaches its position 3".
  • each of the desired angles to be set for instance, 45, 60, 90, 120, 150 and 180, respectively have associated therewith a control potentiometer 4, 5, 6, 7, 8, 9 (FIG. 3) which is provided with current conveying lines and 1 1.
  • Each of the control potentiometers 4 9 is adapted selectively to be preceded by a recoil potentiometer 11 and a dead angle potentiometer 12. Between the branch lines 13 of said potentiometers which branch lines are provided with corresponding contacts, and the contacts of the line 11 there is provided a control rod 14 with corresponding contacts 15 so that during the adjustment of the control rod 14 in longitudinal direction one of the control potentiometers 4 9 will be connected with the potentiometers 11 and 12. Instead of the control rod 14, also a corresponding control roll or drum may be provided.
  • the two potentiometers 11 and 12 may be combined to a composite potentiometer which will take into consideration the angles a, and a It is, of course, to be understood that the present invention is, by no means, limited to the specific showing in the drawing but also comprises any modifications within the scope of the appended claims.
  • a bending machine for bending reinforcing iron rods for concrete which comprises: a counter roll for supporting a portion of a rod to be bent, a forming member around which the rod is to be bent, a bending roll movable around the axis of said forming member, and control potentiometer means for controlling the movement of said bending roll and thereby the angle by which the iron rod will be bent, said control potentiometer means including a plurality of setting potentiometers for respectively setting the desired bending angle for the rod to be bent, a dead angle advance potentiometer common to said setting potentiometers, and a recoil potentiometer likewise common to said setting potentiometers, and control means operable selectively to correct any one of said setting potentiometers with both said dead angle advance potentiometer and said recoil potentiometer.
  • control means includes a control rod common to all of said setting potentiometers.
  • a bending machine in which said control rod is provided with a plurality of spaced connecting contacts arranged in series one behind the other in the longitudinal direction of said control rod, said control rod being displaceable in its longitudinal direction.
  • control rod is rotatable and is provided with connecting contacts angularly distributed on said connecting rod for respective electrical engagement with said setting potentiometer.
  • a bending machine in which said dead angle advance potentiometer and said recoil potentiometer are combined to one unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US77886A 1969-10-04 1970-10-05 Bending machine for bending reinforcing irons for concrete Expired - Lifetime US3661002A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691950127 DE1950127A1 (de) 1969-10-04 1969-10-04 Betoneisenbiegemaschine mit elektrischer Einstellung der Biegewinkel des Biegetellers oder -armes

Publications (1)

Publication Number Publication Date
US3661002A true US3661002A (en) 1972-05-09

Family

ID=5747319

Family Applications (1)

Application Number Title Priority Date Filing Date
US77886A Expired - Lifetime US3661002A (en) 1969-10-04 1970-10-05 Bending machine for bending reinforcing irons for concrete

Country Status (5)

Country Link
US (1) US3661002A (fr)
BE (1) BE757016A (fr)
CH (1) CH513685A (fr)
DE (1) DE1950127A1 (fr)
NL (1) NL7012973A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777525A (en) * 1968-11-23 1973-12-11 Peddinghaus Carl Ullrich Dr Machine for bending concrete-reinforcing bars
US3812694A (en) * 1970-11-30 1974-05-28 P Peddinghaus Bending machine for metal rods
US3835687A (en) * 1972-09-13 1974-09-17 Mitsubishi Heavy Ind Ltd Device for detecting a bend angle upon precisely bending a metallic pipe
US3895509A (en) * 1969-12-03 1975-07-22 Peddinghaus Carl Ullrich Dr Bending machine for rods, wires and other elongated articles of steel, etc.
US4384467A (en) * 1981-06-29 1983-05-24 Raymond International Builders, Inc. Method of forming rings
US5497643A (en) * 1994-02-16 1996-03-12 Ars Corporation Remote bending apparatus
EP1199115A1 (fr) * 2000-10-16 2002-04-24 SCHNELL S.r.L. Procédé pour cintrer des barres profilées ou analogues selon des rayons de courbure programmables
WO2014088801A1 (fr) * 2012-12-05 2014-06-12 Dignity Health Système et procédé de cintrage de tige chirurgicale
CN105057503A (zh) * 2015-09-16 2015-11-18 成都爆米花信息技术有限公司 一种可选择u形钢筋弯曲半径的钢筋弯曲机
CN105149479A (zh) * 2015-09-16 2015-12-16 成都爆米花信息技术有限公司 一种钢筋弯曲机
US10864023B2 (en) 2018-05-07 2020-12-15 Clariance Sas Surgical implant preparation system and method
US11172971B2 (en) 2011-12-05 2021-11-16 Dignity Health Surgical rod bending system and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987001625A1 (fr) * 1985-09-19 1987-03-26 Gardner R F Machine a cintrer les tubes
DE3903301A1 (de) * 1988-03-25 1989-10-05 Frank Ebert Verfahren und vorrichtung zum biegen von vorzugsweise stabfoermigem material
FR2662958B1 (fr) * 1990-06-08 1992-08-21 France Etat Armement Procede et dispositif de cintrage de tuyauterie.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156287A (en) * 1961-12-12 1964-11-10 Pines Engineering Co Inc Control means for metal forming apparatus
US3352136A (en) * 1965-03-22 1967-11-14 Conrac Corp Metal forming machine
US3512383A (en) * 1969-04-21 1970-05-19 Digital Machines Inc Re-bar bender

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156287A (en) * 1961-12-12 1964-11-10 Pines Engineering Co Inc Control means for metal forming apparatus
US3352136A (en) * 1965-03-22 1967-11-14 Conrac Corp Metal forming machine
US3512383A (en) * 1969-04-21 1970-05-19 Digital Machines Inc Re-bar bender

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777525A (en) * 1968-11-23 1973-12-11 Peddinghaus Carl Ullrich Dr Machine for bending concrete-reinforcing bars
US3895509A (en) * 1969-12-03 1975-07-22 Peddinghaus Carl Ullrich Dr Bending machine for rods, wires and other elongated articles of steel, etc.
US3812694A (en) * 1970-11-30 1974-05-28 P Peddinghaus Bending machine for metal rods
US3835687A (en) * 1972-09-13 1974-09-17 Mitsubishi Heavy Ind Ltd Device for detecting a bend angle upon precisely bending a metallic pipe
US4384467A (en) * 1981-06-29 1983-05-24 Raymond International Builders, Inc. Method of forming rings
US5497643A (en) * 1994-02-16 1996-03-12 Ars Corporation Remote bending apparatus
EP1199115A1 (fr) * 2000-10-16 2002-04-24 SCHNELL S.r.L. Procédé pour cintrer des barres profilées ou analogues selon des rayons de courbure programmables
US11172971B2 (en) 2011-12-05 2021-11-16 Dignity Health Surgical rod bending system and method
US11974795B2 (en) 2011-12-05 2024-05-07 Dignity Health Surgical rod bending system and method
WO2014088801A1 (fr) * 2012-12-05 2014-06-12 Dignity Health Système et procédé de cintrage de tige chirurgicale
US9872715B2 (en) 2012-12-05 2018-01-23 Dignity Health Surgical rod bending system and method
US10194968B2 (en) 2012-12-05 2019-02-05 Dignity Health Surgical rod bending system and method
US11376053B2 (en) 2012-12-05 2022-07-05 Dignity Health Surgical rod bending system and method
CN105057503A (zh) * 2015-09-16 2015-11-18 成都爆米花信息技术有限公司 一种可选择u形钢筋弯曲半径的钢筋弯曲机
CN105149479A (zh) * 2015-09-16 2015-12-16 成都爆米花信息技术有限公司 一种钢筋弯曲机
US10864023B2 (en) 2018-05-07 2020-12-15 Clariance Sas Surgical implant preparation system and method

Also Published As

Publication number Publication date
DE1950127A1 (de) 1971-04-22
CH513685A (de) 1971-10-15
BE757016A (fr) 1971-03-16
NL7012973A (fr) 1971-04-06

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