WO2020212813A1 - Machine pour l'usinage à froid d'un matériau filiforme et procédé d'usinage de fils au moyen de ladite machine - Google Patents

Machine pour l'usinage à froid d'un matériau filiforme et procédé d'usinage de fils au moyen de ladite machine Download PDF

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Publication number
WO2020212813A1
WO2020212813A1 PCT/IB2020/053406 IB2020053406W WO2020212813A1 WO 2020212813 A1 WO2020212813 A1 WO 2020212813A1 IB 2020053406 W IB2020053406 W IB 2020053406W WO 2020212813 A1 WO2020212813 A1 WO 2020212813A1
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WIPO (PCT)
Prior art keywords
wire
machining
vertical direction
section
machine according
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.)
Ceased
Application number
PCT/IB2020/053406
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English (en)
Inventor
Luca Mauri
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.)
Flli Mauri Srl
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Flli Mauri Srl
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 Flli Mauri Srl filed Critical Flli Mauri Srl
Priority to EP20723932.8A priority Critical patent/EP3956083B1/fr
Publication of WO2020212813A1 publication Critical patent/WO2020212813A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F5/00—Upsetting wire
    • B21F5/005—Upsetting wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/022—Special design or construction multi-stage forging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/02—Feeding devices for rods, wire, or strips
    • B21K27/04—Feeding devices for rods, wire, or strips allowing successive working steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K5/00—Making tools or tool parts, e.g. pliers
    • B21K5/16—Making tools or tool parts, e.g. pliers tools for turning nuts

Definitions

  • the present invention relates to a machine for machining, in particular cold press-forming, wire-like material.
  • GB 61 1 565 describes a press for use in the cold or hot forging of heads of bolts and the like, comprising a vertically movable head, a fixed bed and an ejector plate positioned underneath the bed and connected to the moving head, for example by means of rods which pass through the support; mounted on the bed, there is a bottom tool holder which supports bottom tools or dies arranged at equal distances from a common centre of the tool holders, the movable head which transports associated upper tools cooperates with said dies so as to carry out successive operations on a series of workpieces positioned in the bottom dies, there also being provided means for transporting the parts from a pair of cooperating devices to the next one in sequence.
  • forming/bending machines which are designed to cold-work sections of wire with a predefined length so as to deform the ends thereof; these machines have, however, a number of drawbacks including the impossibility of shaping both the ends since the double deformation with enlarging of the two ends results in the formation of undercuts which would prevent the extraction of the machined workpiece by means of a linear displacement; instead it is required to provide devices for opening the deformation dies, which not only complicates the machine, increasing its cost, but also results in weakening of the support structure, since the hollow volumes for housing the devices must be increased.
  • the known machines have the major problem of having very large dimensions owing to the need to include large and complex presses for machining long and thin workpieces which must be kept straight, this also resulting in the need for corresponding very large volumes for housing them in the installation and operating site.
  • the technical problem which is posed, therefore, is that of providing a machine for performing machining, in particular a cold press-forming machine, which is able to solve or at least partially overcome one or more problems of the prior art, allowing in particular the machining with deformation of sections of wire having a suitable cross-section and length for forming for example spanners for operating screws, Allen keys and the like.
  • this machine should have small dimensions and be able to be installed easily at any user location without the need for very large spaces.
  • a further desirable aspect is that the machine should allow more efficient machining of the wire-like material, in particular when it is required to machine both ends thereof.
  • the invention therefore relates to a machine for machining, in particular press-forming, wire-like material which comprises:
  • a vertically extending frame comprising two half-frames arranged opposite each other in the vertical direction, so as to form an interspace, the frame having, connected thereto, at least a first machining unit and a second machining unit, each suitable for machining, in particular for upsetting or extruding, a respective section of wire-like material, said units each comprising a top machining head and a bottom machining head situated opposite each other in the vertical direction and arranged on opposite sides of the interspace.
  • a wheel lying in a horizontal plane and arranged to rotate about a vertical axis is housed inside the said interspace.
  • the wheel carries devices for gripping a section of wire and for rotating it between a horizontally oriented position for transporting the section of wire and a vertically oriented position for the machining of at least one of the opposite ends of the said section of wire by one of said machining units.
  • machining units comprising a top head and a bottom head arranged on opposite sides of a wheel for transporting the sections of wire to be machined, which is in turn supplied in a vertical position to the respective working unit, results in a greater machining efficiency in a small space occupied by the machine which is extremely compact; it is also possible to perform the simultaneous machining of the two opposite ends of the wire in a single working unit and/or perform different machining operations, for example upsetting and extrusion of the same section of wire in the same machine rapidly and in a small space.
  • the frame has a preferably polygonal shape in plan view with at least four sides, preferably an octagonal shape, and the machining units may be arranged on non-adjacent sides of the polygon.
  • the top machining head and the bottom machining head of a machining unit are preferably each configured to carry and operate, preferably simultaneously, a respective machining device able to perform the machining of a respective end of the opposite top and bottom ends of the section of wire arranged vertically between the bottom head and top head of the machining unit.
  • each head may for example comprise two flanges situated opposite each other in the transverse direction for supporting a rotating transverse shaft, which preferably carries three sets of cams, each configured for actuation of a respective one of three kinematic transmissions for moving respective parts of the machining device in the vertical direction.
  • a machining device may comprise a casing, the respective bottom and top horizontal faces of which, situated opposite each other in the vertical direction, have a respective opening.
  • the casing may have, housed inside it, a clamp able to project out from an opening in the casing facing the wire, in order to grip and clamp the said wire.
  • the clamp may be for example moved in the vertical direction by means of a sleeve.
  • a spring designed to improve the clamping action of the clamp during machining, is preferably arranged between the sleeve and the clamp.
  • the clamp preferably comprises a plurality of wedge-shaped jaws which are arranged to cooperate with and project out from the opening of the casing in order to grip and clamp the wire.
  • the machining device preferably comprises a die and a punch which are coaxially inserted inside the casing.
  • the first cam means are preferably designed to actuate the casing in the vertical direction; the second cam means are preferably designed to actuate the clamp in the vertical direction; and the third cam means are preferably designed to actuate either the die or the punch in the vertical direction.
  • one or more, and preferably all the cam means of a machining head comprise a cam configured to actuate the respective part in one sense of the vertical direction and a cam configured to actuate the said part in an opposite sense of the vertical direction, thus obtaining desmodromic operation of the respective parts of the machining device,
  • the die may be integral with the clamp in the vertical direction and/or have an internal seat with a diameter greater than the end of the wire to be machined and with a depth in the vertical direction defined so as to determine the final length of the machined end.
  • the punch has preferably an end movable inside the die from a retracted rest position into an advanced position for machining the wire.
  • the die may be coaxial with the opening of the casing and therefore with the wire and displaceable inside the casing in the vertical direction from a retracted position disengaged from the end of the wire being machined into an advanced position for extruding the same end.
  • the extrusion die may have for example an internal seat, with an area smaller than the area of the end of the wire, in particular a previously upset end of the wire, and with a depth in the vertical direction designed to determine the final length of the machined end.
  • the punch may be fixed in the vertical direction to the machining head.
  • the present invention relates furthermore to a method for machining, in particular press-forming, wire-like material by means of a machine for performing machining according to one of Claims 1 -17. Such a method is defined in particular in Claims 18 or 19.
  • the present invention relates furthermore to a method for the production of a body having at least one machined end, in particular a tool such as a spanner or Allen key with a hexagonal or star-shaped end, from a wire-like material, according to the characteristic features of Claim 20.
  • Figure 1 is a schematic perspective view of a press-forming machine according to the present invention
  • Figure 2 is a schematic plan view of the machine according to Fig. 1 ;
  • Figure 3 is a schematic perspective view of a wheel for moving the parts to be machined inside the machine
  • Figure 4 is a schematic perspective view of the bottom operating head of an upsetting unit of the machine according to Fig. 1 ;
  • Figure 5 is a schematic cross-sectional view, along a vertical plane, of the head according to Fig. 4;
  • Fig. 6a is a schematic cross-sectional view, along a vertical plane, of the bottom upsetting unit
  • Figs. 6b-6h are schematic cross-sectional views, similar to that of Fig. 6a, along vertical planes of the bottom upsetting unit during various working stages;
  • Figure 7 is a schematic perspective view of the bottom operating head of the second extrusion unit of the machine according to Fig. 1 ;
  • Figure 8 is a schematic cross-sectional view, along a vertical plane, of the head according to Fig. 7;
  • Fig. 9a is a schematic cross-sectional view, along a vertical plane, of the bottom extrusion unit
  • Figs. 9b-9h are schematic cross-sectional views, similar to that of Fig. 9, of the bottom extrusion unit during various working stages.
  • a preferred example of a cold press-forming machine comprises essentially:
  • a support frame comprising a top half-frame 10 and a bottom half-frame 20 joined together in the vertical direction Z-Z, for example by vertical fastening beams 1 1 ; joining together of the two half-frames is performed so as to leave between them an interspace 1020 of suitable size in the vertical direction.
  • the two half-frames 10,20 have an octagonal shape designed to provide the machine with a high degree of stability.
  • the machine according to the invention may be realized with different configurations of the frame, in particular with a polygonal shape in plan view, for example based on a minimal quadrilateral shape which allows in any case the mounting of an upsetting unit and an extrusion unit between the inlet station and the outlet station.
  • the machine comprises in particular at least a first unit 100 and a second unit 200 for machining one or more ends of a respective section of wire 1 b fed to the machine, respectively for upsetting or extruding said section, each unit being able to machine one or both the ends of said section of wire 1 b.
  • the machine comprises at least a first working unit 100 for performing upsetting of one or both the ends of a section of wire 1 b and a second working unit 200 for the extrusion of one or both the ends of a section of wire.
  • upsetting is understood as meaning any machining operation which results in an increase in the diameter of the end of the section of wire 1 b relative to the initial diameter thereof and a simultaneous shortening thereof due to simple displacement of material, for example until a final programmed size is reached.
  • extrusion is understood as meaning a deformation of the end of the section of wire, in particular an end which has already undergone upsetting, where the material of the end of the wire 1 is forced against the sides of a die which determines its final shape, for example with a hexagonal cross-section. It may therefore be considered that the die extrudes the end material of the wire so as to give it its final shape; this machining operation may however be regarded as being a pressing operation.
  • the two working units have an extension parallel to the vertical direction Z-Z.
  • the two units are preferably mounted on non-consecutive sides 10a, 10b of the octagon (Figs.
  • the machine according to the invention further comprises a wheel 400 lying in a horizontal plane X-Y, orthogonal to the vertical axis Z-Z, about which it is able to rotate, for example driven by a motor 410 (Figs. 2,3).
  • the wheel 400 is housed inside the interspace 1020 formed by the two - top 10 and bottom 20 - half-frames.
  • the wheel 400 carries a plurality of means 420 for gripping a section of wire 1 b, designed to retain a respective horizontally oriented section of wire 1 b, for example fed to the wheel by a transfer device 31 forming part of a unit 30 for feeding and cutting the wire 1 , arranged so as to feed sections of wire 1 a along a direction substantially tangential to the wheel 400.
  • the gripping means also comprise rotation devices designed to rotate the retained section of wire 1 a from a horizontal gripping/release position into a position where the wire 1 b is vertical for machining by a unit 100,200 for performing machining, in particular an upsetting or extrusion operation.
  • the units for performing upsetting 100 and extrusion 200 each have a top head or half-unit 1 10,210 and a bottom head or half-unit 120,220 arranged opposite each other in the vertical direction Z-Z, and arranged on opposite sides of the interspace 1020 formed by two half-frames 10,20, so as to allow the wheel 400, in particular the gripping means 420, to pass through.
  • the particular vertical configuration of the machining units comprising a top head and a bottom head arranged on opposite sides of a wheel for transporting the sections of wire to be machined, which is in turn supplied in a vertical position with respect to the working unit, results in a greater machining efficiency in a small space occupied by the machine which is extremely compact; it is also possible to perform the simultaneous machining of the two opposite ends of the wire in a single machining unit and/or perform different machining operations, for example upsetting and extrusion of the same section of wire in the same machine rapidly and in a small space.
  • a machining unit 100 for upsetting one or both the ends 1 b of a wire 1 will now be described.
  • the first upsetting unit 100 comprises a top head 1 10 and a bottom head 120 of the first unit 1 10, situated opposite each other in the vertical direction Z-Z and arranged on opposite sides of the wheel 400.
  • Each head 1 10,120 of the first unit 100 is configured to support and operate a respective device designed to perform the upsetting of a respective end of the opposite top and bottom ends of the section of wire 1 b, arranged vertically.
  • the preferred example of the bottom operating head 120 comprises two flanges 121 ,122, situated opposite each other in the transverse direction Y-Y, for supporting a rotating transverse shaft 123 (motor not shown).
  • the shaft 123 supports preferably three sets of cam means, i.e. a first cam means 123a, a second cam means 123b and a third cam means 123c of an upsetting head.
  • Each of the cam means is configured to actuate a respective transmission of three associated kinematic transmissions 124a, 124b, 124c, which form a preferred example of means for moving, in the vertical direction Z-Z, parts of the upsetting device described below.
  • the preferred upsetting device of the unit 100 comprises:
  • a casing 150 the respective horizontal bottom face 151 and top horizontal face 152 of which, situated opposite in the vertical direction Z-Z, have a respective opening 151 a and 152a;
  • the casing 150 is connected by means of a first transmission 124a (Fig. 5) to the first actuating cam means 123a of the head 120, which cam means are designed to displace the casing 150 in both senses of the vertical direction Z-Z from a position disengaged from the wire 1 b (Fig. 5) to a position engaged therewith (Fig. 6);
  • an upper clamp 160 comprising a plurality, in particular three, wedge- shaped jaws 161 and able to project out from the top opening 152a of the casing 150 in order to grip the section of wire 1 b, is housed inside the casing 150 and is guided by it.
  • the jaws 161 are able to move into an open/closed position upon actuation of the second cam means 123b, for example by means of a jaw-guiding ring 161 a which is in turn displaced in the vertical direction Z-Z and towards the bottom "I" by a sleeve 162 connected by means of a second kinematic transmission 162b, 124b to the second cam means 123b of the operating head 120;
  • a forming die 170 which has an internal seat with a diameter greater than that of the end of the section of wire 1 b to be upset and with a suitable depth in the vertical direction Z-Z, for determining the length and the final diameter of the upset end;
  • a punch 190 which is coaxially inserted inside the sleeve 162; the top end 190a of the punch is movable inside the forming die 171 from a retracted rest position into an advanced position for forming the wire 1 b; operation of the punch in the vertical direction is performed by means of a strut 191 connected by means of the third kinematic transmission 191c, 124c to the third cam means 123c of the bottom operating head 120.
  • Both the top head 1 10 and the working parts of the top upsetting device may be similar to those of the bottom head 120 and the bottom upsetting device, even though oriented in the opposite direction with respect to the interspace, and are therefore not shown nor described in detail, the realization thereof being within the competence of the person skilled in the art.
  • the top head may, however, be realized differently, should it be desired to machine in a different manner the opposite ends of the section of wire 1 b.
  • the operating sequence of the bottom machining head 120 of an upsetting unit 100 comprises the following steps:
  • Rotation of the shaft 123 and therefore operation of the cam means 123c,b,a in the opposite direction causes opening of the jaws 161 , retraction of the casing 150 and release of the wire 1 b which may be rotated into the horizontal position by the retaining/rotation means of the wheel 400 and conveyed to the next station, for example extrusion station, by the rotation of said wheel which retained it during the upsetting operations.
  • a machining unit 200 for the extrusion of one or both the ends 1 c of a wire 1 b, in particular the already upset ends 1c' of a wire which has been previously machined by an upsetting unit 100, will now be described.
  • the second preferred extrusion unit 200 comprises:
  • each second head is designed to support and operate a respective device for extruding one of the opposite, already upset, top and bottom ends 1 c of the wire 1 b.
  • the bottom head 220 comprises:
  • Each of the cam means is designed to actuate a respective transmission of three associated kinematic transmissions 224a, b,c for moving parts of the extrusion device described below.
  • the extrusion unit 200 comprises:
  • the casing 250 is connected by means of a transmission 253a, 224a to the first actuating cam means 223a, being able to move in both senses of the vertical direction Z-Z from a position of the wire 1 b situated axially outside the casing to a position of the wire 1 b inside the said casing;
  • an upper clamp 260 comprising three wedge-shaped jaws 261 able to project out from the top opening 252a of the casing 250 during the aforementioned closing step described below, in order to grip the wire 1 b, is housed inside the casing 250 and is guided by it.
  • the stable closing of the clamp 260 is ensured by the thrust of an auxiliary compression spring 280 arranged between the said clamp 260 and a jaw- guiding ring 261 a, so as to increase the clamping force of the clamp on the wire during the entire extrusion deformation step.
  • the jaws 261 are moved into the open position, preferably via a jaw-guiding ring 261 a, by a sleeve 262 in turn displaced in the vertical direction Z-Z and connected, by means of a transmission 262b, 224b, to the second actuating cam means 223b.
  • an extrusion die 270 is inserted coaxially with the sleeve 262 and, in the example shown, has an internal seat, for example with a hexagonal cross- section, having an area smaller than the upset ring on the end of the wire 1 b and with a depth in the vertical direction Z-Z able to determine the final length of the extruded hexagonal shaped end;
  • the die 270 is integral with a die moving sleeve 272 connected by means of a transmission 270c, 224c to the third cam means 223c of the head 220 which are therefore able to operate the die in both senses of the vertical direction;
  • the punch and strut are in this case immobile in the vertical direction, for example locked to a crosspiece 291 d.
  • Both the top head 210 and the top machining device comprise working parts which, even though situated opposite to those of the bottom head 220 and bottom machining device, are similar to the latter and are therefore neither shown nor described in detail, the realization thereof being within the expertise of the person skilled in the art who will also take into account the inverted positions of the reference points "S" and "I".
  • the operating sequence of the extrusion unit 200 comprises the following steps:
  • extrusion is understood as meaning the action of the segments of the extrusion die which, forcing the material of the wire 1 b against the sides of the said die, produce the final shape, in the example a hexagonal shape, of the end being machined;
  • the wheel 400 comprises means for gripping a section 1 b of wire 1 a fed by external means, already cut to size and supplied oriented horizontally parallel to the transverse direction Y-Y so as to facilitate conveying thereof inside the machine by the said wheel.
  • the wire 1 b machined in the vertical direction and finished with both the ends correctly deformed is again rotated horizontally and transported by the rotation of the wheel 400; it is then supplied to the outlet of the machine still oriented horizontally oriented for transfer to the downstream apparatus responsible for bending the wire for final shaping thereof.
  • one or more, and preferably all of the cam means of a machining head comprise a cam configured to actuate the respective kinematic transmission in one sense along the vertical direction (e.g. towards the wheel 400) and a cam configured to actuate the kinematic transmission in the opposite sense along the vertical direction (e.g. away from the wheel 400), the two cams being suitably arranged with respect to each other and the actuating shaft.
  • the cam means are configured to perform desmodromic operation of the respective parts of the machining device, which enables a more rapid machining cycle, with reduced consumption and higher rotation speeds of the actuating shaft.
  • the press-forming machine according to the invention with upsetting and extrusion units, comprising a top head and a bottom head for simultaneous machining of the two opposite ends of the wire in turn supplied in a vertical position and the corresponding movement of the wires through the machine by means of a horizontal wheel arranged between the two top and bottom half-parts of the three units, it is possible to obtain numerous advantages compared to the prior art in particular as regards:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Extraction Processes (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

La présente invention concerne une machine destinée à l'usinage, en particulier la formation à la presse, d'un matériau filiforme (1, 1a), comprenant : un cadre s'étendant verticalement comprenant deux demi-cadres (10, 20) disposés en regard l'un de l'autre dans la direction verticale (Z-Z), de manière à former un espace intermédiaire (102), le cadre ayant, relié à celui-ci, au moins une première unité d'usinage (100) et une seconde unité d'usinage (200), chacune appropriée pour l'usinage, en particulier pour refouler ou extruder, une section respective (1b, 1c) de matériau filiforme (1a), lesdites unités comprenant chacune une tête d'usinage supérieure (110, 210) et une tête d'usinage inférieure (210, 220) situées en regard l'une de l'autre dans la direction verticale (Z-Z) et disposées sur des côtés opposés de l'espace intermédiaire (1020) ; une roue (400) se trouvant dans un plan horizontal (X-Y), tournant autour d'un axe vertical (Z-Z) et logée à l'intérieur dudit espace intermédiaire (1020) ; la roue (400) portant des dispositifs destinés à saisir une section de fil (1b) et à la faire tourner entre une position orientée horizontalement pour transporter la section de fil (1b) et une position orientée verticalement pour l'usinage d'au moins une des extrémités opposées de ladite section de fil (1b) par l'une desdites unités d'usinage.
PCT/IB2020/053406 2019-04-18 2020-04-09 Machine pour l'usinage à froid d'un matériau filiforme et procédé d'usinage de fils au moyen de ladite machine Ceased WO2020212813A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20723932.8A EP3956083B1 (fr) 2019-04-18 2020-04-09 Machine pour l'usinage à froid d'un matériau filiforme et procédé d'usinage de fils au moyen de ladite machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000006052 2019-04-18
IT102019000006052A IT201900006052A1 (it) 2019-04-18 2019-04-18 Macchina di lavorazione a freddo di materiale in forma di filo e metodo di lavorazione di fili tramite detta macchina

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WO2020212813A1 true WO2020212813A1 (fr) 2020-10-22

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EP (1) EP3956083B1 (fr)
IT (1) IT201900006052A1 (fr)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4108358A1 (fr) * 2021-06-25 2022-12-28 F.LLI MAURI S.p.A. Appareil, machine et procédé pour déformer les extrémités opposées d'une pièce de fil
CN119368658A (zh) * 2024-12-30 2025-01-28 浙江金诺机械科技有限公司 一种异形管件冷镦机
EP4360774A4 (fr) * 2021-06-22 2025-01-29 Zhejiang Ruicheng Machinery Manufacturing Co., Ltd. Procédé de refoulement de tête de barre d'acier et machine associée de refoulement de barre d'acier

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Publication number Priority date Publication date Assignee Title
GB611565A (en) * 1946-05-02 1948-11-01 Wilkins & Mitchell Ltd Improvements in or relating to presses for use in cold or hot forging of the heads of bolts and the like
US3226742A (en) * 1960-01-16 1966-01-04 Gnutti Quirino Indexible turret means
US4291568A (en) * 1979-08-27 1981-09-29 Veeder Industries Inc. Method of forming socket wrenches
EP2298466A1 (fr) * 2009-09-17 2011-03-23 National Machinery LLC Procédé de formage à froid, outillage pour une presse à étages multiples et presse à étages multiples pour la formage à froid
WO2015110259A2 (fr) * 2014-01-23 2015-07-30 Martin Huber Dispositif d'usinage pour la fabrication et l'usinage assistés par ordinateur de pièces dentaires
DE102016102940A1 (de) * 2016-02-19 2017-08-24 Schmale Maschinenbau GmbH Drahtbiegemaschine
WO2019007481A1 (fr) * 2017-07-04 2019-01-10 Mikron Sa Agno Machine d'indexage et de transfert tournante

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB611565A (en) * 1946-05-02 1948-11-01 Wilkins & Mitchell Ltd Improvements in or relating to presses for use in cold or hot forging of the heads of bolts and the like
US3226742A (en) * 1960-01-16 1966-01-04 Gnutti Quirino Indexible turret means
US4291568A (en) * 1979-08-27 1981-09-29 Veeder Industries Inc. Method of forming socket wrenches
EP2298466A1 (fr) * 2009-09-17 2011-03-23 National Machinery LLC Procédé de formage à froid, outillage pour une presse à étages multiples et presse à étages multiples pour la formage à froid
WO2015110259A2 (fr) * 2014-01-23 2015-07-30 Martin Huber Dispositif d'usinage pour la fabrication et l'usinage assistés par ordinateur de pièces dentaires
DE102016102940A1 (de) * 2016-02-19 2017-08-24 Schmale Maschinenbau GmbH Drahtbiegemaschine
WO2019007481A1 (fr) * 2017-07-04 2019-01-10 Mikron Sa Agno Machine d'indexage et de transfert tournante

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4360774A4 (fr) * 2021-06-22 2025-01-29 Zhejiang Ruicheng Machinery Manufacturing Co., Ltd. Procédé de refoulement de tête de barre d'acier et machine associée de refoulement de barre d'acier
EP4108358A1 (fr) * 2021-06-25 2022-12-28 F.LLI MAURI S.p.A. Appareil, machine et procédé pour déformer les extrémités opposées d'une pièce de fil
CN119368658A (zh) * 2024-12-30 2025-01-28 浙江金诺机械科技有限公司 一种异形管件冷镦机

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