EP0088152A1 - Stanz- und/oder Biegevorrichtung für Rohre, insbesondere zum Stanzen von Löchern mit zueinander senkrechten Achsen und/oder zum Biegen eines Rohres mit Krümmungen in verschiedenen Ebenen - Google Patents

Stanz- und/oder Biegevorrichtung für Rohre, insbesondere zum Stanzen von Löchern mit zueinander senkrechten Achsen und/oder zum Biegen eines Rohres mit Krümmungen in verschiedenen Ebenen Download PDF

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Publication number
EP0088152A1
EP0088152A1 EP82106553A EP82106553A EP0088152A1 EP 0088152 A1 EP0088152 A1 EP 0088152A1 EP 82106553 A EP82106553 A EP 82106553A EP 82106553 A EP82106553 A EP 82106553A EP 0088152 A1 EP0088152 A1 EP 0088152A1
Authority
EP
European Patent Office
Prior art keywords
jaws
tube
punch
jaw
assembly
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Withdrawn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
EP82106553A
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English (en)
French (fr)
Inventor
Bernard Matthey-Doret
Gilberte Mangin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0088152A1 publication Critical patent/EP0088152A1/de
Withdrawn legal-status Critical Current

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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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
    • 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

Definitions

  • This invention relates to the punching of tubular elements and/or bending or curving thereof.
  • tubular bodies or pieces are required provided with one hole, or with two diametrically opposite holes or with a plurality of boles at one or more locations. It is well known (see U.S. Patent Specifications Nos. 3,971,275 and 2,844,204) to provide holes in a tubular body by a single punch, which punches or pierces the tubular body wall at one location.
  • the U.S. Patent Specification No. 3,234,838 discloses a machine for simultaneously piercing a tube at diametrically opposite locations by two aligned punches which move within two jaws; the jaws in turn are movable near and away to each other, and said punches move in the same direction as the jaws.
  • an object was to provide an apparatus enabling to pierce holes in a tubular piece with. coincident axes and holes with axes transversely to one another, said apparatus possibly being able also to carry out curves lying on planes not coincident with one another, in a single working station, without any need of moving or displacing the tubular element.
  • the present invention substantially provides a tube punching and/or bending assembly, comprising a pair of tube gripping jaws relatively moving toward and away from each other in a first direction, said apparatus including a toolholder rod movable in a second direction transvers to said first direction, and comprising an opening or slot in said jaw or jaws of such a size as to allow the passage of a tool carried by the said rod.
  • the invention also provides a tube punching assembly, comprising: a pair of tube gripping jaws, relatively movable toward and away from each other in a first path line or direction; two punches disposed and movable in said first direction; and a frame integral with one of said jaws, which frame is for a toolholder rod movable in a second direction which is transverse to the first direction; an opening in said jaw or jaws allows the passage of a tool carried by said rod.
  • the toolholder rod may be provided with either a punch for tube punching, or a bending pad for tube bending.
  • the jaws may be straight or curved for providing a curve in the tube, in a per se known manner.
  • the punching and bending assembly according to this invention allows to obtain substantial savings in working times and required labour, thus affording a considerable reduction in production costs and also an increased accuracy in the obtained product.
  • Fig. 1 shows an exemplary tubular piece 1 which, for example, could be a leg element of an openable clothes hanger.
  • Metal tubular elements or pieces are variously used, for example in the furnishings art, as chair and table legs, structural elements for beds, etc.
  • said piece 1 At lengthwise spaced apart position, said piece 1 has pairs of diametrically opposite holes 2, 2', more clearly shown in Fig. 2, and one or more holes 3, an axis of hole 3 is at right angles or generally transverse to the axis of holes 2, in a plane containing said axis of holes 2, or in an offset plane.
  • Said element 1 also has curved end portions 4, whose centerlines lie on plans transverse to a plan defined by a centerline of the remainder of element 1.
  • a punching assembly For working the tubular element 1 on a single machine without any intermediate repositioning, a punching assembly has been conceived, a first embodiment of which is shown in schematic perspective view in Fig. 3.
  • the assembly 10 shown-in Fig. 3 comprises a pair of jaws 11 and 12, both of which are provided with a longitudinal slot 13 and 14, respectively, for accommodating a tubular element or tube such as 1, not shown in this figure.
  • Each of the jaws are resiliently restrained by spring elements 16 to a respective plate 11', 12'.
  • said jaws 11 and 12 can be moved near each other to clamp the tube, and away from each other to release the tube.
  • only one jaw, such as 12 will be movable along with the relative plate to and fro in a direction indicated by arrow A in Fig. 3; while the other jaw 11 will only be shifted by slight resilient adjustements relative to its own plate.
  • Guide elements for the jaws are denoted at 15. As to any further detail of construction, reference is made to the later description for the embodiment shown in figs. 4 and 5.
  • One of the jaws has secured thereto a casing or frame 18 carrying a sliding rod 19 under the control of a jack or cylinder-piston assembly 20.
  • Said rod 19 may terminate with a punch (not shown) and operates moving along according to an axis 22, which is transverse with respect to a first direction which is the jaw movement direction; in this particular case axis 22 is at right angles thereto.
  • each jaw has an opening or notch respectively 23 for jaw 11 and 24 for jaw 12, of a sufficient size for the punch to pass therethrough.
  • a suitable modified frame could be provided (as hereinafter explained), so that the punch can operate along the desired axis.
  • the opening comprising said notches 23 and 24 can be provided in a single jaw and be of any shape, provided that it would allow for the punch passage.
  • Figs. 4 and 5 particularly show a punching assembly 30 having a plurality of punches, at least one of which has its axis transverse to the others. It comprises a mount 31, intended to be mounted onto a bench, not shown, by means of two pins 32 and 33 and a setting screw 34.
  • a body 35 of the punching assembly is slidable on said mount 31 through a relief guide (not shown) on mount 31 and a corresponding groove on body 35.
  • Two shoulders 38 and 39, secured by screws 40 and 41, provide for limiting the sliding travel of body 35 on mount 31.
  • Said body 35 carries a plier member having two jaws 42 and 43. each jaw has a slot or recess 42' and 43', respectively, for receiving a tube to be pierced.
  • a resilient elastomeric spring element 44 said jaw 42 bears against an extension 36 of body 35, while said jaw 43 bears against a plate of punch holder 65 through an elastomeric element 45.
  • the jaw 42 is mounted on the extension 36 by two screws 46 and 47, the threaded ends 48 and 49 of which are screwed in the jaw and the unthreaded portions 50 and 51 slidably engage in passages 52 and 53 in body 35.
  • the enlarged heads 54 and 55 of screws 46 and 47 will rest against inner shoulders 56 and 57 of said passages 52 and 53.
  • the jaw 43 is mounted on the punch holder 65 by means of screws. 58 and 59. Since this type of mounting is identical for each screw, hereinafter only screw 58 will be described.
  • This screw 58 has a threaded end 60 screwed in the punch holder 65 and an unthreaded portion 61 engaged within a passage 62 of jaw 43.
  • the enlarged head 63 of screw 58 bears against an inner shoulder 64 of passage 62.
  • the screws 46 and 47, 58 and 59 also provide for tensioning the springs 44 respectively 45, and further act as guides for the jaws in the movement thereof relative to said body 35 respectively punch holder 65, limiting the travel of the jaws with respect to the body and punch holder by bearing of the enlarged heads on the corresponding shoulders.
  • Two guide spokes 66 and 67 are mounted on jaw 42 and jaw 43 has two correspondig holes 68 and 69 to ensure a guide for the movement of the jaws relative to each other.
  • Such guide spokes also provide for preventing a tube to be punched from falling on the bottom of jaws 42 and 43.
  • a first punch 70 is mounted on the extension 36 of body 35, and a punch head 71 is retained by a thread 72.
  • Punch 70 passes through said body 35 and jaw 42, so that when the punching assembly is at rest, a shearing tip 74 of the punch is flush with an inner surface of the jaw.
  • a second punch 75 is mounted on said punch holder 65 and passes through jaw 43.
  • This punch 75 is made integral with the punch holder 65 by a locking thread 76 screwed in an internal thread of a threaded ring extension 77 of the punch holder.
  • This threaded ring 77 also has an external thread 78, by which it is screwed in a threaded recess 79 of an end of a stem 80 of a hydraulich jack or cylinder-piston control unit 81 integral with body 35.
  • a casing or frame 83 is mounted on an extension of jaw 42 and made integral with said extension.
  • the frame 83 carries a jack or cylinder-piston control unit 84, a piston stem 85 of which has an end internally threaded at 86 for engagement of a ring 87 retaining a punch 88.
  • a jack or cylinder-piston control unit 84 a piston stem 85 of which has an end internally threaded at 86 for engagement of a ring 87 retaining a punch 88.
  • other connecting means between said punch 88 and relative control unit 84 could be provided.
  • the jaws 42 and 43 at a position corresponding to punch 88 are made with opposite notches 91, 92 of such a size as to provide a sufficient opening for the passage of said punch 88, when the jaws are at a position close to each other.
  • the third punch 88 has been shown arranged at right angles to the operating or movement line of punches 70 and )5, and it operates moving in a vertical plane spaced apart with respect to a vertical plane containing the axes of the first two punches.
  • frames could be provided in which the third punch would operate moving along any axis which is skew to the operating line of the first two punches.
  • An assembly with a third punch at an axis which is not orthogonal to the first two punches is schematically shown with closed jaws in Fig. 6, in which parts corresponding to those of figs. 4 and 5 have been denoted with the same reference numerals followed by letter "a" and will not be described in detail.
  • the assembly 30a comprises two opposite jaws 42a and 43a, of which jaw 42a bears against a body 35a through resilient or spring element 44a, while jaw 43a bears against punch holder 65a through resilient or spring element 45a.
  • Two coaxial punches are shown at 70a and 75a, and the third punch at 88a, the latter being inclined relative to an hypothetical line at right angles to the axis of the other two punches.
  • a casing or frame for the third punch is denoted by reference numeral 83a; a control unit for the two aligned punches is denoted at 81, and a control unit for the transverse punch is denoted at 84a.
  • a tube T is placed between the spaced apart jaws 42, 43 (or 42a, 43a).
  • the cylinder-piston assembly 81 (81a) is operated. Under the action of stem 80 (80a) the jaw 43 (43a) is moved towards the jaw 42 (42a) until the jaws are brought in contact with each other and the punches 70 and 75 (70a and 75a) are in contact with an outer surface of the tube. Then, the piston of assembly 81 continues to move forward, squeezing or pressing spring 45, (this being limited by the contact between the jaw 43 and punch holder 65) and sinking the punch 75 in tube T until the latter is punched.
  • the operation of the third punch 88 is controlled by delayed action cylinder-piston assembly 84, after the closing of jaws 42 and 43.
  • pressure automatically falls in the cylinder-piston assemblies 81, 84 (or 84a), for example by means of a timer mechanism, and the springs 44 and 45 release, such a release being limited by the pairs of screws 46, 47 and 58, 59.
  • the machine may be provided with curved jaws, as seen in plan view for providing a slight curve, as described in the above mentioned earlier patent application of the same applicant.
  • Fig. 7 shows a modified embodiment of the assembly of Fig..3.
  • the jaws 121 and 122 have respective slots 123 and 124 configurated at one end with a downwardly curved lower portion 123' and 124', respectively.
  • a frame 125 for a rod 126 is movable vertically or generally transversely of the jaw movement under the control of the cylinder-piston assembly 127.
  • a bending member 130 is made integral at the lower end of rod 126.
  • This bending member shown in Fig. 8, substantially comprises a block 131, having hingedly connected thereto at 132 a pad 133, the latter being generally curve shaped at the bottom at 134 for matching with the surface of the tube to be bent.
  • the jaws have notches or generally removed portions 135 and 136, respectively, for operation of said member 130.
  • Fig. 9 shows a further modified embodiment of the assembly.
  • jaws 161 and 162 have cavities 163 and 164 that in plan view are of curved shape, so as to provide in a tube a bending, simultaneously with the punching operation, in a plane according to approaching direction of the jaws.
  • reference numeral 165 designates mutual positioning spokes for the jaws.
  • reference numeral 169 designates a vertical punch on the relative casing or frame 168
  • reference numerals 173 and 174 designate slots for operation of the vertical punch
  • reference numerals 180 and 181 indicate the centerlines for two horizontal punches.
  • Fig. 10 shows a bench 140 whereon eight punching/bending assemblies are mounted, some of them being for punching aligned holes, and same for punching holes having axis transverse to the aligned holes.
  • the cylinder-piston control assemblies are parallel connected to a same hydraulic control, not shown.
  • An U-shaped tube T is placed in these assemblies to be punched simultaneously at various locations therealong (so as to provide holes in it having centerlines transverse to each other), and to be bent in the plane where it lies and/or in a plane transverse to said plane.
EP82106553A 1982-03-08 1982-07-21 Stanz- und/oder Biegevorrichtung für Rohre, insbesondere zum Stanzen von Löchern mit zueinander senkrechten Achsen und/oder zum Biegen eines Rohres mit Krümmungen in verschiedenen Ebenen Withdrawn EP0088152A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001382 1982-03-08
IT20013/82A IT1198357B (it) 1982-03-08 1982-03-08 Gruppo di punzonatura e/o piegatura di tubi,particolarmente adatto a consentire la punzonatura di fori con assi trasversali fra loro e/o la piegatura con curvature non complanari fra loro

Publications (1)

Publication Number Publication Date
EP0088152A1 true EP0088152A1 (de) 1983-09-14

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EP82106553A Withdrawn EP0088152A1 (de) 1982-03-08 1982-07-21 Stanz- und/oder Biegevorrichtung für Rohre, insbesondere zum Stanzen von Löchern mit zueinander senkrechten Achsen und/oder zum Biegen eines Rohres mit Krümmungen in verschiedenen Ebenen

Country Status (2)

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EP (1) EP0088152A1 (de)
IT (1) IT1198357B (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315281A2 (de) * 1987-11-05 1989-05-10 Petrus Armin Michiel Marie Cooymans Vorrichtung zur Werkstückbearbeitung durch Druckmittel
FR2639853A1 (fr) * 1988-12-07 1990-06-08 Perm Dispositif d'usinage de tube ou materiaux similaires, par cisaillage ou deformation
EP0417703A2 (de) * 1989-09-12 1991-03-20 BLM S.p.A. Verfahren zur Durchführung von zusätzlichen Bearbeitungsvorgängen an stangenförmigen Werkstücken und Maschine zur Durchführung des Verfahrens
GB2279602A (en) * 1993-07-02 1995-01-11 Schaefer Maschbau Wilhelm Hollow body cut out
GB2318313A (en) * 1996-10-16 1998-04-22 Honda Motor Co Ltd Combined processing apparatus
CN101972809A (zh) * 2010-08-24 2011-02-16 上海宏昌汽配有限公司 金属方管腰孔的冲压加工技术
CN104354316A (zh) * 2014-11-03 2015-02-18 宁夏富盛机械制造有限公司 铁艺液压成型机
CN104368677A (zh) * 2014-09-29 2015-02-25 南通福乐达汽车配件有限公司 一种管件水平冲孔工装
CN105478580A (zh) * 2016-01-22 2016-04-13 马鞍山天正智能装备有限公司 一种圆管打扁双头冲弧一体式冲弧机及其使用方法
CN110405057A (zh) * 2019-07-29 2019-11-05 白尊敏 一种开料-冲孔-管端整形-弯管一体化设备
JP2020037152A (ja) * 2018-09-04 2020-03-12 小川　修 ノズル管穿孔補助具
CN112058969A (zh) * 2020-09-21 2020-12-11 谭冻冻 一种工业生产用零部件成型设备
CN112077534A (zh) * 2020-08-24 2020-12-15 张家港市固牌铝业有限公司 一种手推杆的生产工艺
IT202000004189A1 (it) * 2020-02-28 2021-08-28 Ricos Srl Dispositivo per la foratura di tubi cavi di piccole dimensioni e relativo metodo di foratura

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480721B (zh) * 2013-08-30 2015-12-23 重庆市宏立摩托车制造有限公司 一种u形管支腿冲孔工装
CN112122449B (zh) * 2020-06-28 2022-04-26 浙江凡左科技有限公司 一种多工位冲压弯管机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812046A (en) * 1929-06-17 1931-06-30 Hudson Motor Car Co Die press
US2556987A (en) * 1949-12-10 1951-06-12 Ames Spot Welder Co Inc Pipe deforming machine
US2844204A (en) * 1954-09-30 1958-07-22 Deeco Inc Combined clamping and punching apparatus
US3234838A (en) * 1963-10-04 1966-02-15 James K Faull Tube piercing apparatus
US3971275A (en) * 1975-09-18 1976-07-27 Mach John J Nestable die alignment means for punch press machines
DE2330224B2 (de) * 1972-04-11 1979-02-22 Fa. Heinrich Oltmanns, 2905 Edewecht Vorrichtung zur Erzeugung von Lochungen in den Wellentälern eines Wellrohres, insbesondere für Dränungen
FR2416063A1 (fr) * 1978-02-06 1979-08-31 Matthey Doret Bernard Unite de poinconnage pour tubes
DE3020545A1 (de) * 1979-06-30 1981-01-22 Tokyo Bebi Kk Vorrichtung zum einbringen von loechern in einem bauelement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812046A (en) * 1929-06-17 1931-06-30 Hudson Motor Car Co Die press
US2556987A (en) * 1949-12-10 1951-06-12 Ames Spot Welder Co Inc Pipe deforming machine
US2844204A (en) * 1954-09-30 1958-07-22 Deeco Inc Combined clamping and punching apparatus
US3234838A (en) * 1963-10-04 1966-02-15 James K Faull Tube piercing apparatus
DE2330224B2 (de) * 1972-04-11 1979-02-22 Fa. Heinrich Oltmanns, 2905 Edewecht Vorrichtung zur Erzeugung von Lochungen in den Wellentälern eines Wellrohres, insbesondere für Dränungen
US3971275A (en) * 1975-09-18 1976-07-27 Mach John J Nestable die alignment means for punch press machines
FR2416063A1 (fr) * 1978-02-06 1979-08-31 Matthey Doret Bernard Unite de poinconnage pour tubes
DE3020545A1 (de) * 1979-06-30 1981-01-22 Tokyo Bebi Kk Vorrichtung zum einbringen von loechern in einem bauelement

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315281A3 (en) * 1987-11-05 1990-07-11 Petrus Armin Michiel Marie Cooymans A device for working on work-pieces by means of pressure
EP0315281A2 (de) * 1987-11-05 1989-05-10 Petrus Armin Michiel Marie Cooymans Vorrichtung zur Werkstückbearbeitung durch Druckmittel
FR2639853A1 (fr) * 1988-12-07 1990-06-08 Perm Dispositif d'usinage de tube ou materiaux similaires, par cisaillage ou deformation
EP0417703A2 (de) * 1989-09-12 1991-03-20 BLM S.p.A. Verfahren zur Durchführung von zusätzlichen Bearbeitungsvorgängen an stangenförmigen Werkstücken und Maschine zur Durchführung des Verfahrens
EP0417703A3 (en) * 1989-09-12 1991-06-12 Blm S.P.A. Method of executing additional processes of work operations on bar material workpieces and machine for carrying out such method
GB2279602A (en) * 1993-07-02 1995-01-11 Schaefer Maschbau Wilhelm Hollow body cut out
GB2279602B (en) * 1993-07-02 1995-07-19 Schaefer Maschbau Wilhelm Hollow body cut out
GB2318313A (en) * 1996-10-16 1998-04-22 Honda Motor Co Ltd Combined processing apparatus
GB2318313B (en) * 1996-10-16 1999-11-03 Honda Motor Co Ltd Combined processing apparatus
CN101972809A (zh) * 2010-08-24 2011-02-16 上海宏昌汽配有限公司 金属方管腰孔的冲压加工技术
CN104368677B (zh) * 2014-09-29 2016-08-24 南通福乐达汽车配件有限公司 一种管件水平冲孔工装
CN104368677A (zh) * 2014-09-29 2015-02-25 南通福乐达汽车配件有限公司 一种管件水平冲孔工装
CN104354316A (zh) * 2014-11-03 2015-02-18 宁夏富盛机械制造有限公司 铁艺液压成型机
CN105478580A (zh) * 2016-01-22 2016-04-13 马鞍山天正智能装备有限公司 一种圆管打扁双头冲弧一体式冲弧机及其使用方法
CN105478580B (zh) * 2016-01-22 2017-10-10 马鞍山天正智能装备有限公司 一种圆管打扁双头冲弧一体式冲弧机及其使用方法
JP2020037152A (ja) * 2018-09-04 2020-03-12 小川　修 ノズル管穿孔補助具
CN110405057A (zh) * 2019-07-29 2019-11-05 白尊敏 一种开料-冲孔-管端整形-弯管一体化设备
IT202000004189A1 (it) * 2020-02-28 2021-08-28 Ricos Srl Dispositivo per la foratura di tubi cavi di piccole dimensioni e relativo metodo di foratura
CN112077534A (zh) * 2020-08-24 2020-12-15 张家港市固牌铝业有限公司 一种手推杆的生产工艺
CN112077534B (zh) * 2020-08-24 2022-04-22 张家港市固牌铝业有限公司 一种手推杆的生产工艺
CN112058969A (zh) * 2020-09-21 2020-12-11 谭冻冻 一种工业生产用零部件成型设备

Also Published As

Publication number Publication date
IT8220013A0 (it) 1982-03-08
IT1198357B (it) 1988-12-21

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