EP0301972B1 - Drahtbiegemaschine und Verfahren zu ihrer Steuerung - Google Patents

Drahtbiegemaschine und Verfahren zu ihrer Steuerung Download PDF

Info

Publication number
EP0301972B1
EP0301972B1 EP19880401972 EP88401972A EP0301972B1 EP 0301972 B1 EP0301972 B1 EP 0301972B1 EP 19880401972 EP19880401972 EP 19880401972 EP 88401972 A EP88401972 A EP 88401972A EP 0301972 B1 EP0301972 B1 EP 0301972B1
Authority
EP
European Patent Office
Prior art keywords
tools
active means
tool
active
points
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 - Lifetime
Application number
EP19880401972
Other languages
English (en)
French (fr)
Other versions
EP0301972A1 (de
Inventor
Yves Latour
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.)
Latour and Fils SA
Original Assignee
Latour and Fils 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 Latour and Fils SA filed Critical Latour and Fils SA
Publication of EP0301972A1 publication Critical patent/EP0301972A1/de
Application granted granted Critical
Publication of EP0301972B1 publication Critical patent/EP0301972B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire

Definitions

  • the present invention relates to an automatic wire bending machine.
  • Such machines use metal wire which is bent along curves, angles, different planes, so as to obtain a particular profile.
  • the known folding means is of the mechanical type. It consists of tools mounted on a plate itself fixed on the machine, these tools being connected directly to tie rods or indirectly by interposing slides. The shape of the tools and the movements in their orientations and amplitudes correspond to the particular profile to be obtained. These movements are obtained by means of cams driven by a common rotary shaft.
  • this design provides for the use of hydraulic cylinders controlled and controlled by a programmable control, movement after movement in succession.
  • This design using a mounting of the active means on the tooling plate has other drawbacks, such as that due to the bulk of all the active means on the plate as well as the minimum distance between two tools due the size of each of the active means themselves.
  • the present invention overcomes these drawbacks and proposes a machine for bending the wire comprising active means, a work table, a tool plate, tie rods and tools, including the independent active means, independent and secured to the work table.
  • actuate levers connected by tie rods to the tools mounted on the tooling plate characterized in that the active means are mounted on a common translation means by means of a disengageable means in that said active means are moved by brushless electric motors driving a ball screw, and in that the tools actuation levers are connected to the tie rods by one of their ends by connections to the ball screws, by the other end and to the active means by through a pivot.
  • the common means of translation of the active means is a rotary screw driven by a motor; the disengageable means being half-nuts engaged on this same screw.
  • the active means are, in the standby position, always fixed to the work table.
  • the invention further provides a method for controlling the wire bending machine according to claims 1 to 3, which consists in introducing, into the processing unit of a programmable controller, the initial coordinates of the positioning points tools, relative to each other; memorizing the initial position and the speed of movement of the active means and determining, consequently, the starting points of the motors and the movement of the positioning points of the tools, so as to make them work in advance and in recovery.
  • This process takes into account the system approach time to determine the actual starting points of the motors.
  • the calculation of the displacements of the positioning points of the tools takes into account modifications of the functional characteristics of the active means and / or of the coordinates of the initial positioning points of the tools.
  • the start and end of the feed coincide with the start and end of the cycle.
  • the method also makes it possible to work in hidden time, and allows simple modifications to the programming.
  • the slides are not detailed because they correspond to those of the prior art. These tools are connected by tie rods such as 30, 31, 32, 33 to couplings 40, 41, 42, 43 .
  • each active means also carries a disengageable guide means 80, 81, shown in engagement at 80 and disengaged at 81 . It can be a nut in two half-nuts associated with an opening and closing mechanism.
  • This plate is completed by blocking systems for each of the motors relative to plate 12 .
  • the invention provides hydraulic clamping by pliers in a slide. (not shown)
  • the brushless type electric motor 70 is coupled by its drive shaft 710 to a ball screw 711 rotating in a bearing 712 secured to the structure 714 .
  • the coupling sleeve being referenced 713 .
  • the lever 50 is of curved shape and the two branches are oriented in two directions close to 90 ° from each other. At the point of intersection, a rotation axis 510 is provided around which the lever can pivot. One of its ends 511 is secured to a ball nut 512 mounted on the screw 711 , this joining preferably being an articulated bracket.
  • the other end of the lever 513 comprises a coupling means 40 of the caliper plus pin type (not shown).
  • FIG. 2 the machine according to the invention is seen in which there is a first work table such as 1 but also a lower work table 7 with its associated active means 3 .
  • the tool plate is not shown and in known manner, the lower front face 10 of the work table is provided with grooves allowing the fixing of the tool plates.
  • the feeding and dressing means are referenced respectively 101 and 100 .
  • a safety member 102 is disposed at the front of the machine.
  • a third series of active means 4 allows the ejection of the products by displacement of the lever 5 in a direction perpendicular to the plane of the front face.
  • FIG. 5 there is shown a shape 90 around which the wire 97 is bent using tools. There are five of these : a central tool 91 , an upper tool 92 , a lateral tool 93 , a lower tool 94 , an ejection tool 95 .
  • the tooling is supplemented by a knife 96 and devices (not shown) corresponding to the detection of the start and end of feeding DA and FA respectively.
  • the central tool comes to block the wire after the AF , the upper tool 92 can then be lowered to bend two angles, then the lateral tool 93 is actuated to continue this bending and to initiate two lower bends which will then be terminated by the lower tool 94 , finally the ejection tool 95 ensures the evacuation of the product out of the form 90 .
  • the successive stages are penalizing in time.
  • the method according to the invention proposes to trigger the steps in advance and in recovery, so as to improve the execution times, this thanks to the proposed device allowing the independence of operation of each active member with a central control by a processing unit.
  • c is the stop point which corresponds to the maximum displacement of the central tool 91 , there is therefore a zero displacement after point c which corresponds to the part of the curve with zero slope.
  • the tool To reach point b , the tool must have previously moved from position I to position II , taking into account the initial position of the tool, the speed of movement of the tool, itself dependent on the known characteristics of the active member, it is easy for the processing unit to determine the point D1 at the start of the movement of the tool and taking into account the possible inertia of the system, it will be necessary to adapt D1 which will correspond in real time to D ′ 1 .
  • the point f corresponds to the position of the lateral tool 93 in position II in which the end of the wire can still pass in front of the tool. It then passes to position III corresponding to point g in which it initiates folding enough to allow the intervention of the lower tool 94 .
  • the processing unit determines D3 and D′3 as D1 and D′1 .
  • Point h corresponds to position II of the lower tool 94 and point i corresponds to position III of this same tool.
  • the processing unit determines D4 and D′4 .
  • the lower tool 94 is in abutment and the folding on the form is completely finished.
  • the lower tool 94 does not remain in abutment and it is immediately returned to the initial position, shown symmetrically on the corresponding curve.
  • the lateral tools 93 and upper 92 return to the initial position but it is necessary to have released the upper tool 92 from position IV to position III before returning the central tool 91 which explains the portion j to k .
  • the ejection tool 95 ejects the finished product in the phase shown n to o on the curve.
  • the DA is started, while the ejection tool 95 continues to move until it stops so as to completely evacuate the product, then it returns to position. initial.
  • the wire could be advanced by a certain length L corresponding to the time t multiplied by the feed speed.
  • the processing unit on receipt of the information will move the starting point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (7)

1. Drahtbiegemaschine, umfassend Funktionselemente (60, 61, 62, 63), einen Arbeitstisch (1), einen Werkzeugwagen (20), Spannstangen und Werkzeuge (21-25), wobei die selb-ständigen, unabhängigen und gemeinsam auf der waagrechten Oberseite (12) des Arbeitstisches (1) angebrachten Funktionselemente (60-63) durch Spannstangen mit den auf dem Werkzeugwagen (20) montierten Werkzeugen verbundene Hebel (50-53) betätigen, dadurch gekennzeichnet, daß die Funktionselemente (60-63) mittels eines auskuppelbaren Elementes auf einer gemeinsammen Translationseinrichtung montiert sind, daß die Funktionselemente (60-63) durch Elektromotoren ohne Bürsten (70) angetrieben werden, die eine Kugelumlaufspindel (711, 512) antreiben, und daß die zur Betätigung der Werkzeuge (21-25) bestimmten Hebel (50-53) durch Verbindungseinrichtungen (40-43) an einem ihrer Enden (513) mit Spannstangen (30-33) und über das andere Ende (511) mit den Kugelumlaufspindeln (711, 512) verbunden sind und mit den Funktionselementen mittels einer Achse (510) verbunden sind.
2. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die gemeinsame Translationseinrichtung (45) der Funktionselemente (60-63) eine von einem Motor (46) angetriebene Spindel (45) ist und daß die auskuppelbaren Elemente (80-87) von Halbmuttern gebildet sind, die mit dierser Spindel in Eingriff sind.
3. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die Funktionselemente (60-63) in der Bereitschaftsstellung stets auf dem Arbeitstisch (1) befestigt sind.
4. Verfahren zur Steuerung der Drahtbiegemaschine nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die es darin besteht, in ein Steuerwerk mit Rechner die Ausgangskoordinaten der Positionspunkte (a-p) der Werkzeuge in bezug zueinander einzugeben, die Ausgangsposition und die Verschiebungsgeschwindigkeit der Funktionselemente (60-63) zu speichern und in Abhängigkeit davon die Startpunkte (D1-D5) der Motoren (70) und die Verschiebung der Positionspunkte der Werkzeuge entsprechend festzulegen, so daß deren Einsatz im voraus und zeitlich überschneidend ausgelöst wird.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Vorschubzeit des Systems berücksichtigt wird, um die wirklichen Startpunkte (D′1-D′5) der Motoren (70) festzulegen.
6. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß bei der Berechnung der Verschiebung der Werkzeug-Positionspunkte Veränderungen der Betriebsdaten der Funktionselemente (60-63) und/oder der Koordinaten der Ausgangspositionspunkte (a-p) der Werkzeuge berücksichtigt werden.
7. Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß Anfang und Ende der Zuführung mit dem Anfang und dem Ende des Arbeitstaktes zusammenfallen.
EP19880401972 1987-07-31 1988-07-29 Drahtbiegemaschine und Verfahren zu ihrer Steuerung Expired - Lifetime EP0301972B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8711088A FR2618702B1 (fr) 1987-07-31 1987-07-31 Machine de pliage de fil et son procede de pilotage
FR8711088 1987-07-31

Publications (2)

Publication Number Publication Date
EP0301972A1 EP0301972A1 (de) 1989-02-01
EP0301972B1 true EP0301972B1 (de) 1991-10-02

Family

ID=9353888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880401972 Expired - Lifetime EP0301972B1 (de) 1987-07-31 1988-07-29 Drahtbiegemaschine und Verfahren zu ihrer Steuerung

Country Status (4)

Country Link
EP (1) EP0301972B1 (de)
DE (1) DE3865266D1 (de)
ES (1) ES2025800T3 (de)
FR (1) FR2618702B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203191A (en) * 1990-05-02 1993-04-20 North America Omcg, Inc. Versatile automatic metal strip working machine
FR2900078B1 (fr) * 2006-04-24 2008-06-13 Numalliance Soc Par Actions Si Machine de pliage de fil combinant un dispositif de faconnage sequentiel et un dispositif mettant en oeuvre une plaque d'outillages
CN106541047B (zh) * 2016-12-30 2018-05-11 广东宏安丰人防工程有限公司 一种钢筋弯折机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869591A (en) * 1956-06-22 1959-01-20 Larkin Sam Apparatus adapted for the bending of wire strip material and the like
GB1071889A (en) * 1964-09-30 1967-06-14 Tensator Ltd Method and machine for making non-cumulative force spiral springs
DE2926457A1 (de) * 1979-06-30 1981-01-15 Fischer & Co Fico Masch Verfahren zum stanzen und biegen band- und/oder drahtfoermigen werkstoffs und vorrichtung zum durchfuehren des verfahrens
JPS59144542A (ja) * 1983-02-07 1984-08-18 Itaya Seisakusho:Kk 線材折曲成形機における成形工具作動制御法
DE3537085A1 (de) * 1985-10-18 1987-04-23 Meyer Roth Pastor Maschf Arbeitsmaschine mit ungleichmaessig angetriebenen werkzeugen, insbesondere maschine zum herstellen von formteilen aus draht- oder bandmaterial

Also Published As

Publication number Publication date
DE3865266D1 (de) 1991-11-07
EP0301972A1 (de) 1989-02-01
FR2618702B1 (fr) 1994-02-11
FR2618702A1 (fr) 1989-02-03
ES2025800T3 (es) 1992-04-01

Similar Documents

Publication Publication Date Title
EP0352038B2 (de) Apparat zum stufenweisen Abisolieren von Draht
FR2477929A1 (fr) Dispositif d'amenee de feuilles pour cisailles
FR2575944A1 (fr) Procede et dispositif pour le cintrage automatique de tubes metalliques
US5582078A (en) Wire displacing and stripping apparatus and method
FR2628661A1 (fr) Appareil de manipulation pour machine a cintrer et procede de manipulation de pieces
FR2535639A1 (de)
CH646892A5 (fr) Procede de decoupage par decharges electriques.
FR2541920A1 (fr) Manipulateur a bras telescopique
FR2584633A1 (fr) Procede et installation de pliage de precision de toles metalliques
JP4245679B2 (ja) バー材送り装置
EP0301972B1 (de) Drahtbiegemaschine und Verfahren zu ihrer Steuerung
FR2586908A1 (fr) Installation pour la fabrication automatisee des chaussures
FR2504419A1 (fr) Manipulateur a poutre elevatrice pour presses a matricer ou machines analogues
FR2685239A1 (fr) Machine pour l'usinage de pieces a partir de profiles de grande longueur.
FR2624412A1 (fr) Manipulateur et dispositif de robotique en particulier pour cintreuse de toles
US5778945A (en) Automatic wire twister
FR2617417A1 (fr) Dispositif de commande destine au dispositif automatique a traverses mobiles d'une presse a forger
FR2646986A1 (fr) Appareil pour couper, transporter et denuder de facon programmable des segments de conducteurs
FR2599998A1 (fr) Machine et procede de traitement de plaques, notamment par cisaillement
FR2613962A1 (fr) Procede et automate de pliage automatique de toles
FR2526699A1 (fr) Appareil et procede pour realiser la commande programmee de fonctions de travail, notamment pour le soudage d'elements de batterie
EP0299857A2 (de) Maschine zum Biegen von Drähten
EP3110585B1 (de) Drehautomaten, steuereinheit für drehautomaten und nachrüstungsverfahren für eine derartige einheit
EP0128257A1 (de) Verfahren zum Zuführen von Stangen bei einer Drehbank
EP0787546A1 (de) Vorrichtung zum Vorfalzen und Falzen eines Bleches

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19890118

17Q First examination report despatched

Effective date: 19900213

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3865266

Country of ref document: DE

Date of ref document: 19911107

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2025800

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070726

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20070824

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070725

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070727

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070724

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20080728

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080730

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20080728

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20080730