US20090056401A1 - Wire bending machine combining a sequential shaping device and a device using a tool plate - Google Patents

Wire bending machine combining a sequential shaping device and a device using a tool plate Download PDF

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Publication number
US20090056401A1
US20090056401A1 US12/296,649 US29664907A US2009056401A1 US 20090056401 A1 US20090056401 A1 US 20090056401A1 US 29664907 A US29664907 A US 29664907A US 2009056401 A1 US2009056401 A1 US 2009056401A1
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United States
Prior art keywords
machine
shaping
component
tool plate
bend
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Abandoned
Application number
US12/296,649
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English (en)
Inventor
Joel Etienne
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.)
Numalliance SAS
Original Assignee
Numalliance SAS
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Filing date
Publication date
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Assigned to NUMALLIANCE reassignment NUMALLIANCE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ETIENNE, JOEL
Publication of US20090056401A1 publication Critical patent/US20090056401A1/en
Abandoned legal-status Critical Current

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    • 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 a new wire bending machine and to the methods of controlling such a machine.
  • a first type of machine operates sequentially, bend by bend, using simple and economical standard tooling, for example tools known as “turntables”, possibly also including a device for rotating the wire so that bends can be made in different planes.
  • This type of machine is perfectly adequate for shaping short production runs of components, both in terms of the quality of the shaping and in terms of the profitability and unit cost.
  • patent application EP 0 865 842 describes a sequential shaping machine with two bending heads, it being impossible for these two heads to operate simultaneously on the same workpiece, it still being necessary to employ a transfer by gripper in order to change head and perform flat shaping.
  • This machine has the abovementioned disadvantages namely that it is adequate only for production runs at low production rates.
  • a sequential shaping machine requires a control method capable of programming a geometry.
  • a second type of automatic bending machine allows a workpiece with several bends to be shaped on a tool plate the tools of which are actuated concurrently so as to increase productivity and operate at a high production rate.
  • this relates to a wire bending machine and to the method of controlling it, which is a method suited to programming the movements of the actuators.
  • the abovementioned machines do not display optimum profitability when shaping medium production runs of components because the sequential machine operates at too low a production rate, and the machine with a tool plate represents too great an investment. In both instances, this results in a unit cost that is not optimized for medium production runs.
  • the invention consists in a machine for automatically shaping components using various bending operations performed in one and the same plane or in different planes, characterized in that it comprises, in combination, a first device for carrying out sequential shaping bend by bend using standard tools, and a second device employing the tool plate, the two devices being operated using a single numerical control device capable of programming both geometry and actuator movements for a medium production rate.
  • the first device comprises at least one turntable, and/or in that it further comprises at least one rotary clamp, and/or that the tool plate can be mounted and actuated in a different plane from the shaping plane of the first device, and further comprises a transfer device suited to the change in plane.
  • control method is characterized in that the numerical control device provides the option of creating a part-finished component bend by bend on the first device then of transferring the component to the second device in order to complete the component, and/or the numerical control device provides the option of shaping part of the component using the first device and of shaping the remaining part or parts on the second device, and/or the numerical control device provides the option of using each machine on its own and/or the numerical control device provides the option of employing the two machines in order to create the same component.
  • FIGS. 1 and 2 schematically depict a front view and a view in section along line A-A, of a machine according to an non-limiting alternative form of embodiment of the invention.
  • the machine depicted in the figures is a combination of a sequential shaping machine ( 1 ) and of a table shaping machine equipped with a tool plate ( 2 ), as described in the Patent EP 0 301 972 mentioned in the introduction.
  • FIG. 1 is a schematic view of the wire bending machine of the present invention.
  • FIG. 2 is a cross-sectional view of the wire bending machine of the present invention across line A-A of FIG. 1 .
  • FIG. 3 is partial perspective view of the tool plate of the present invention.
  • FIG. 4 is a partial cross-sectional view of the operation of the tool plate in the machine of the present invention.
  • the sequential machine ( 1 ) has standard tools, for example turntables ( 3 , 4 ) able to move on two axes (x) and (y) to create bends in a plane (x,y), and possibly a rotary clamp ( 5 ) when the profile of the component entails bending in a direction that is angled with respect to the plane (x,y).
  • turntables ( 3 , 4 ) able to move on two axes (x) and (y) to create bends in a plane (x,y), and possibly a rotary clamp ( 5 ) when the profile of the component entails bending in a direction that is angled with respect to the plane (x,y).
  • the second machine has a table ( 6 ) equipped with a tool plate ( 7 ), each tool being able to be moved autonomously and being mechanically driven by systems involving through-bolts such as ( 8 ) and which are not depicted in detail in these figures, each one being controlled by a predetermined program of a numerical control device ( 9 ).
  • this collection of tools is capable of creating complex components and/or of creating components at a high production rate.
  • the tool plate ( 7 ) is positioned in the working plane (x,y) of the first machine and the same wire feed device is able to transfer the wire directly from the first to the second machine, and in this case a transfer means can therefore be omitted.
  • One and the same numerical control device operates the tools of both machines, and is therefore capable of programming both the geometry and the actuators of the plate, thus allowing the programming steps to be combined with one another.
  • Combining the two machines therefore has the advantage of making it easier to transfer components and of synchronizing the movements of the tools of the two machines, this synchronization being essential for reducing costs and optimizing manufacture and to allow a single shaping production rate on both machines when the shaping steps are spread across the two machines.
  • a component may be shaped according to various combinations of programming which are chosen according to the complexity of the profile to be obtained, according to the investment in special-purpose tooling, or according to the desired production rate:
  • each machine it is also possible to use each machine on its own as need be. For example, for creating prototypes, only the first machine is used or, for creating certain components immediately as long production runs, the second machine will prove to be the more appropriate one.
  • a solution employing the two machines for creating one and the same component may also be conceived of under the following circumstances: where there is a gradual ramp-up in production rates, where a number of components are being produced that have a common part (produced on the tool plate) and a specific part (produced on the turntable for example), or for components the design of part of which is not completely set or where there are evolutions to a component initially scheduled to be produced on the tool plate.
  • a machine according to the invention displays great flexibility of use and is able to respond to all industry requirements for the shaping of wire with the best possible cost/production rate and/or cost/shaping complexity optimization, even for medium production runs, something that could not be achieved previously.
  • the component may be parted off after the first shaping operation, after transfer between the two machines or after the second shaping operation; a first shaping operation on the first machine may be performed on one component while the final shaping of the previous component is being performed on the second machine, thus increasing productivity.
  • a machine of this type comprises active means, a work plate, a tool plate, through-bolts and tools, of which the active means, which are autonomous, independent, and secured to the tool plate, actuate levers connected by through-bolts to the tools mounted on the tool plate, the active means being mounted on a common translation means via a disengageable means, said active means ( 60 , 61 , 62 , 63 ) being moved by brushless electric motors ( 70 ) via ball screws, and the actuating levers ( 50 , 51 , 52 , 53 ) that actuate tools ( 21 , 22 , 23 , 24 , 25 ) being connected to the through-bolts ( 30 , 31 , 32 , 33 ) by connections ( 40 , 41 , 42 , 43 ) via one of their ends ( 513 ) and being connected to the translation means via their other end ( 511 ).
  • a machine of this type is characterized in that the common translation means ( 45 ) of translating the active means ( 60 , 61 , 62 , 63 ) is a rotating screw ( 45 ) driven by a motor ( 90 ), the disengageable means being half-nuts in mesh with this same screw.
  • a machine of this type is characterized in that the active means ( 60 , 61 , 62 , 63 ), when in the disengaged position, are fixed to the work plate ( 1 ).
  • the method of controlling it is characterized in that, having studied the movements of the tools, the coordinates of the link points are entered, the characteristics of the active means ( 60 , 61 , 62 , 63 ) are stored in memory, and in that the processing unit calculates the theoretical motor start points so that the tools will operate concurrently.
  • said method takes account of the inertia of the system when determining the actual start points.
  • the processing unit calculates how the link points move when the characteristics of the active means ( 60 , 61 , 62 , 63 ) and/or one of the values of the coordinates of the link points is or are modified.
  • the feed starts and feed ends coincide with the starts and ends of cycles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Numerical Control (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
US12/296,649 2006-04-24 2007-04-20 Wire bending machine combining a sequential shaping device and a device using a tool plate Abandoned US20090056401A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0603596A FR2900078B1 (fr) 2006-04-24 2006-04-24 Machine de pliage de fil combinant un dispositif de faconnage sequentiel et un dispositif mettant en oeuvre une plaque d'outillages
FR0603596 2006-04-24
PCT/FR2007/051150 WO2007122354A1 (fr) 2006-04-24 2007-04-20 Machine de pliage de fil combinant un dispositif de façonnage séquentiel et un dispositif mettant en oeuvre une plaque d'outillages

Publications (1)

Publication Number Publication Date
US20090056401A1 true US20090056401A1 (en) 2009-03-05

Family

ID=37467488

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/296,649 Abandoned US20090056401A1 (en) 2006-04-24 2007-04-20 Wire bending machine combining a sequential shaping device and a device using a tool plate

Country Status (6)

Country Link
US (1) US20090056401A1 (fr)
EP (1) EP2012950A1 (fr)
BR (1) BRPI0710727A2 (fr)
CA (1) CA2642361A1 (fr)
FR (1) FR2900078B1 (fr)
WO (1) WO2007122354A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702097A (en) * 1983-04-06 1987-10-27 Helmut Zahlaus Process for the bending of rod-like materials
US6295857B1 (en) * 1997-03-20 2001-10-02 Schnell S.P.A. Method and machine for automatically bending profiled elements and the like
US20050076694A1 (en) * 2000-02-21 2005-04-14 Ateliers De Constructions Mecaniques Latour Et Fils Wire bending device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES471370A1 (es) * 1978-07-03 1979-02-01 Buch Batlle Augusto Perfeccionamientos en maquinas dobladoras universales
FR2618702B1 (fr) * 1987-07-31 1994-02-11 Latour Fils Machine de pliage de fil et son procede de pilotage
DE4103302A1 (de) * 1990-02-05 1991-10-17 Heinz Finzer Modular aufgebautes werkstueck-bearbeitungszentrum und dazugehoeriger antriebsmodul

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702097A (en) * 1983-04-06 1987-10-27 Helmut Zahlaus Process for the bending of rod-like materials
US6295857B1 (en) * 1997-03-20 2001-10-02 Schnell S.P.A. Method and machine for automatically bending profiled elements and the like
US20050076694A1 (en) * 2000-02-21 2005-04-14 Ateliers De Constructions Mecaniques Latour Et Fils Wire bending device

Also Published As

Publication number Publication date
FR2900078B1 (fr) 2008-06-13
WO2007122354A1 (fr) 2007-11-01
CA2642361A1 (fr) 2007-11-01
EP2012950A1 (fr) 2009-01-14
FR2900078A1 (fr) 2007-10-26
BRPI0710727A2 (pt) 2012-01-31

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AS Assignment

Owner name: NUMALLIANCE, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ETIENNE, JOEL;REEL/FRAME:022079/0711

Effective date: 20081215

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION