EP2711103B1 - Procédé et dispositif de formage des pièces à usiner par fluotournage - Google Patents

Procédé et dispositif de formage des pièces à usiner par fluotournage Download PDF

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Publication number
EP2711103B1
EP2711103B1 EP12006680.8A EP12006680A EP2711103B1 EP 2711103 B1 EP2711103 B1 EP 2711103B1 EP 12006680 A EP12006680 A EP 12006680A EP 2711103 B1 EP2711103 B1 EP 2711103B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
forming rollers
enveloping
rollers
forming
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.)
Active
Application number
EP12006680.8A
Other languages
German (de)
English (en)
Other versions
EP2711103A1 (fr
Inventor
Karl-Heinz Köstermeier
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.)
Repkon Machine and Tool Industry and Trade Inc
Original Assignee
Repkon Machine and Tool Industry and Trade Inc
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 Repkon Machine and Tool Industry and Trade Inc filed Critical Repkon Machine and Tool Industry and Trade Inc
Priority to EP12006680.8A priority Critical patent/EP2711103B1/fr
Priority to ES12006680.8T priority patent/ES2527395T3/es
Priority to PCT/EP2013/002824 priority patent/WO2014044396A1/fr
Priority to MX2014014793A priority patent/MX2014014793A/es
Priority to US14/384,845 priority patent/US9662695B2/en
Publication of EP2711103A1 publication Critical patent/EP2711103A1/fr
Application granted granted Critical
Publication of EP2711103B1 publication Critical patent/EP2711103B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers

Definitions

  • the invention relates to a method for forming workpieces according to the preamble of claim 1 and a device for forming workpieces according to claim 5 (see, for example US 2010/0236122 ).
  • FIGS. 1 and 2 Longitudinal sectional view
  • a workpiece 4 is set in rotation in a rotational direction 6 and then by externally brought to the workpiece, mounted in a bearing housing 1 rollers or rollers 2 under relative displacement of the workpiece. 4 is deformed in an axial feed direction 5 relative to the forming rollers 2.
  • this deformation takes place in such a way that the outer forming rollers 2 press the material of the workpiece 4 in the region of deformation against an inner mandrel 3, so that the material is partially axially, radially and tangentially placed in a flow state and this to a Reduction of the wall thickness of the workpiece 4 leads, with the resulting reduced wall thickness results from the distance between the forming roller 2 and inner mandrel 3.
  • the possible reduction of the wall thickness of the workpiece 4 is limited by the size of the wall thickness, the strength of the material, the friction between the inner wall of the preform 4 and the inner mandrel 3 and the possible number of forming rollers 2 on the circumference of the workpiece 4.
  • the effect of the compressive force of the forming rollers 2 reduces with increasing wall thickness to be reshaped, so that it is no longer possible from a certain wall thickness to bring the material in the pressure range 7 (effective range) of the forming rollers 2 in a flow state.
  • the thickness of the walls to be reduced with the known flow-forming process is limited by the lack of yield stress in the material.
  • the object of the invention is to provide a method and a device in which the shaping of rotationally symmetrical workpieces with constant or different wall thicknesses is possible even with larger wall thicknesses.
  • the inner diameter of the workpiece is widened by pressing inner forming rollers of an inner forming unit and / or the outer diameter is reduced by pressing the outer forming rollers;
  • the inner mandrel can also be displaced by the inner forming unit in the above-mentioned procedures.
  • the inner forming rollers are formed in a certain way, namely so that the envelope surfaces of the running surfaces of the inner forming rollers each define a Hüllkegelstumpf.
  • the associated cones each have conical tips.
  • all these tips are located on the axes of rotation of the inner forming rollers.
  • the inner forming rollers are arranged so that their roller rotation axes all intersect at a point on the axis of rotation of the workpiece, and also the points defined by the conical tips fall on this common point of intersection.
  • the inner mandrel can be driven with the workpiece around the workpiece axis.
  • the inner and / or outer forming rollers can be driven to rotate.
  • the same geometry with the common intersection as described for the inner forming rollers can alternatively or be provided in addition to the outer forming rollers.
  • the yield stress in the forming area in the walls of the workpiece is increased by inner and outer forming units on a driven workpiece, in which the inner rollers and the adjacent outer rollers have a minimal tangential distance to each other and thus maximizing the Allow forming rollers on the circumference of the contact diameter on the workpiece.
  • This can also be achieved by means of driven inner and outer forming units on a stationary workpiece.
  • FIGS. 3 to 5 a first embodiment of the invention is shown.
  • the outer forming unit is in this embodiment by the in the FIGS. 1 and 2 realized outer forming rollers 2 realized.
  • an internal forming unit shown in the Figures 5 and 6 , instead of in FIG. 1 used shown simple inner mandrel 3.
  • This inner forming unit creates by pressing inner forming rollers to the inside of the workpiece 9, a further pressure region 8, which extends from the inside of the workpiece 9 radially outward. This is in FIG. 4 shown. Because of the two-sided forming units, two pressure regions 7, 8 are formed, which overlap and thus considerably increase the existing reduction possibility of the wall thickness 10 or a higher strength of the wall Allow material to be formed while maintaining a constant wall thickness reduction.
  • this inner forming unit has a plurality of tapered rollers arranged tangentially to the workpiece 9, which are mounted as forming rollers 11, in particular in a cage 12, 13, and can be positioned tangentially and axially relative to the workpiece 9.
  • the cage is held together with screws 14 and is axially adjustable.
  • the forming rollers 11 are supported on a, in particular conical, inner mandrel 16, which is fastened to an extension section 17 whose diameter is smaller than the shaped or to be formed inner workpiece diameter 18th
  • the forming rollers 11 are thus held tangentially and axially, in particular by the cage 12, 13, and radially by the inner mandrel 16 in position. This arrangement ensures that the forming rollers do not fall out of the inner forming unit when the inner forming unit is outside the workpiece 9.
  • a maximum number of forming rollers with a minimum tangential distance from each other is possible, which exert a maximum possible forming force on the inner wall of the workpiece.
  • the forming rollers 11 By rolling the forming rollers 11 with the tapered outer side (conical outer side means that at least the envelope surface of the inner or outer forming rollers is truncated cone or conical) on the outside 19 of the êtdorns 16, a conical outer envelope surface 20, the largest diameter of the moldable inner diameter 18 of the workpiece 9 is determined.
  • the tapered outer side conical outer side means that at least the envelope surface of the inner or outer forming rollers is truncated cone or conical
  • the center lines of the centers of the conical shaping rollers 11 intersect with the tips of the shroud cones of all tapered forming rollers 11 in a point 21 which lies on the workpiece axis or the axis of rotation 22 of the workpiece 9.
  • the radial adjustability of the forming rollers to a diameter is possible, in which the center lines 24 and the ends of the shroud 20 of the forming rollers 11 intersect with the axis of rotation 22 of the workpiece 9 at a point 21 and thus speed wise are coordinated.
  • the larger diameter of the conical enveloping body 20 then forms the inner diameter 18 of the shaped workpiece 9.
  • an inner centering unit 23 for the workpiece area to be formed and another inner centering unit (not shown) for the shaped workpiece area can be provided. Both centering units are independently rotatably mounted in the center of the axis of rotation 22, so that they can be pushed with a minimum amount of friction through the workpiece 9 during the forming.
  • the schwumformiki can also be used without respectumformiki.
  • an outer sheath (not shown) must be mounted, which is axially and tangentially driven by the flowing material, so that only minimal friction between the material and the inner wall of the outer shell is formed.
  • a modified outer forming unit can be provided, as shown in FIGS FIGS. 6 to 8 is shown.
  • the mecanicumformiser shown there corresponds to the embodiment described above.
  • the outer forming unit shown has a plurality of tangentially arranged to the workpiece tapered rollers, which are provided as forming rollers 24 in the example shown in a cage 25, 26, the left and right cage part with screws 27 are connected to each other and can be axially adjustable.
  • the arrangement, shape and orientation of the outer forming rollers 24 is quite similar to that of the inner forming rollers 11 described above.
  • a raceway 28 To support the outer race of the forming rollers 24 is a raceway 28, with inner race 29 to the forming rollers 24 which is mounted in an outer housing 30, respectively.
  • the outer forming rollers 24 are thus tangential and axially held by a cage 25, 26, and radially by the outer race 28 in position.
  • the forming rollers 24 form with their inner raceway a conical enveloping body 31 whose angle to the axis of rotation 32 of the workpiece 33 corresponds to the inlet angle of a forming roller 24.
  • the radial adjustability of the forming rollers 24 is possible to a diameter at which the center lines 34 and the ends of the enveloping body 31 of the tapered rollers 24 intersect with the axis of rotation of the workpiece 33 at a point 35 and thus are matched in terms of speed.
  • the small diameter of the frusto-conical enveloping body of the forming rollers 24 then forms the outside diameter of the shaped workpiece. At the same time prevents the cage assembly falling out of the forming rollers when no workpiece 33 is located inside the outer forming unit.
  • All forming rollers together form within the cage 25, 26 a conical enveloping body 31 whose angle to the axis of rotation 22 of the workpiece 33 form the angle of entry of the forming rollers 24 for forming the workpiece 33.
  • the forming rollers are preferably surrounded by a lubricating coolant fluid, which is supplied through the coolant connection 36.
  • a similar forming process with the forming unit described above is possible when the outer race 28 is tangentially and axially driven and the workpiece 33 is fixed or when the outer race 28 is driven only tangentially and the workpiece 33 is tangential fixed and moved axially.
  • each of the two types of outer forming units requires an inner mandrel 3 for receiving the workpiece on which the workpiece is centered.
  • the design of the inner mandrel can have a significant impact on the friction be taken between the workpiece and flowing material.
  • an internal mandrel driven by the material flow or an inner roller minimal friction losses between the material and the internal mandrel can be achieved.
  • an inner forming unit in combination with an inner mandrel and to arrange one or more outer forming units on the circumference of the workpiece, wherein an outer forming unit with the inner forming unit axially deforms in the same workpiece cross section and at the same time another contemplatumformiki in the region êtdorns in another place the workpiece transforms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Tyre Moulding (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (8)

  1. Procédé de fabrication de pièces usinées, dans lequel une pièce à usiner (4, 9, 33) sensiblement symétrique en rotation, avec un axe (22) de pièce à usiner, est maintenu concentriquement avec un mandrin intérieur (3, 16), prévu à l'intérieur de la pièce à usiner (4, 9, 33) et est façonnée au moyen de rouleaux de pression, par pression radiale exercée par des rouleaux de formage extérieur (7), sachant que l'épaisseur de la paroi de la pièce à usiner (4) est réduite, au moins par sections,
    caractérisé en ce
    que le diamètre intérieur (18, 41) de la pièce à usiner (33) est élargi par pression exercée par des rouleaux de formage intérieur (11) d'une unité de formage intérieur, sachant que les rouleaux de formage intérieur (11) sont réalisés de telle manière que les surfaces enveloppes de leurs surfaces de roulement définissent chacune un tronc de cône enveloppe et que les sommets des cônes enveloppes respectivement associés soient situés sur les axes de rotation des rouleaux de formage intérieur, sachant que les rouleaux de formage intérieur (11) sont de plus disposés de telle manière que les axes de rotation et les cônes enveloppes (20) se coupent tous en un point, sur l'axe (22) de pièce à usiner, sachant que le mandrin intérieur (3, 16) est entraîné avec la pièce à usiner (4, 9, 33) autour de l'axe (22) de pièce à usiner, ou que les rouleaux de formage intérieur et/ou les rouleaux de formage extérieur sont entraînés en rotation, et/ou que le diamètre extérieur de la pièce à usiner (33) est réduit par pression exercée par les rouleaux de formage extérieur (24) de l'unité de formage extérieur, sachant que les rouleaux de formage extérieur (24) sont réalisés de telle manière que les surfaces enveloppes de leur surface de roulement définissent chacune un tronc de cône enveloppe et que les sommets des cônes enveloppes (31) respectivement associées soient situés sur les axes de rotation (34) des rouleaux de formage extérieur (24), sachant que leurs axes de rotation (34) et les cônes enveloppes (31) se coupent tous en un point (21), sur la l'axe (22) de pièce à usiner.
  2. Procédé selon la revendication 1,
    caractérisée en ce
    que le diamètre extérieur de la pièce à usiner est réduit par l'unité de formage extérieure (24, 44) et que le diamètre intérieur est simultanément réduit pas l'unité de formage intérieur (7, 23), sachant que les unités de formage sont positionnées de telle manière que les zones de pressions individuelles des rouleaux de formage extérieur (24) et les zones de pression des rouleaux de formage intérieur dans la pièce à usiner (33) sont superposés axialement par rapport à la direction de l'axe (22) des pièces à usiner.
  3. Procédé selon revendication 1 ou 2
    caractérisé en ce
    que les unités de formage intérieure et de formage extérieur présentent chacune un propre entraînement axial et tangentiel par rapport à l'axe longitudinal des pièces à usiner (22), sachant que la pièce à usiner (33) est serrée fixement.
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce
    que, simultanément, une pluralité d'unités de formage extérieur réduit le diamètre extérieur et une pluralité d'unités de formage intérieur élargissent le diamètre intérieur.
  5. Dispositif de fabrication de pièces à usiner, qui est doté d'un mandrin intérieur (3, 16), autour duquel une pièce à usiner (4, 9, 33) peut être montée concentriquement avec un axe (22) de pièce à usiner, d'une unité de formage extérieure avec des l'unité de formage extérieur (7) qui sont conçus pour façonner la pièce à usiner par pression radiale exercée par lesdits rouleau de formage extérieur (7) en réduisant, au moins par sections, l'épaisseur de la paroi de la pièce à usiner (4, 9, 33),
    caractérisé en ce
    que pour élargir le diamètre intérieur (18, 41) de la pièce à usiner (33) est prévue une unité de formage intérieur dotée de rouleaux de formage intérieur (11), sachant que les rouleaux de formage intérieur (11) sont réalisés de telle manière que les surfaces enveloppantes de leurs surfaces de roulement définissent chacune un tronc de cône enveloppe et que les sommets des cônes enveloppes respectivement associés soient situés sur les axes de rotation des rouleaux de formage intérieur, sachant que les rouleaux de formage intérieur (11) sont de plus disposés de telle manière que leurs axes de rotation et les cônes enveloppes (20) se coupent tous en un point, sur l'axe (22) de la pièce à usiner, sachant que le mandrin intérieur (3, 16) peut être entraîné en rotation avec la pièce à usiner (4, 9, 33) autour de l'axe (22) de la pièce à usiner, ou que les rouleaux de formage intérieur et/ou les rouleaux de formage extérieur peuvent être entraînés en rotation, et/ou que les rouleaux de formage extérieur (24) sont réalisés de telle manière que les surfaces enveloppes de leurs surfaces de roulement définissent chacune un tronc de cône enveloppe et que les sommets des cônes enveloppes (31) respectivement associés soient situés sur les axes de rotation (34) des rouleaux de formage extérieur (24), sachant que les rouleaux de formage extérieur (24) sont de plus disposés de telle manière que leurs axes de rotation (34) et les cônes enveloppes (31) se coupent tous en un point (35), sur la l'axe (22) de la pièce à usiner
  6. Dispositif selon la revendication 5,
    caractérisé en ce
    que le rouleau de formage (24) présente une pluralité de profilages.
  7. Dispositif selon l'une des revendications 5 ou 6,
    caractérisé en ce
    que les unités de formage intérieur et de formage extérieur présentent chacune un propre entraînement axial et tangentiel par rapport à l'axe de la pièce à usiner (22).
  8. Dispositif selon l'une des revendications 5 à 7,
    caractérisé en ce
    qu'il présente une pluralité d'unités de formage extérieur et une pluralité d'unités de formage intérieur.
EP12006680.8A 2012-09-22 2012-09-22 Procédé et dispositif de formage des pièces à usiner par fluotournage Active EP2711103B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12006680.8A EP2711103B1 (fr) 2012-09-22 2012-09-22 Procédé et dispositif de formage des pièces à usiner par fluotournage
ES12006680.8T ES2527395T3 (es) 2012-09-22 2012-09-22 Procedimiento y dispositivo para el conformado de piezas
PCT/EP2013/002824 WO2014044396A1 (fr) 2012-09-22 2013-09-19 Procédé et dispositif permettant le fluotournage de pièces
MX2014014793A MX2014014793A (es) 2012-09-22 2013-09-19 Metodo y dispositivo para repujado de piezas de trabajo.
US14/384,845 US9662695B2 (en) 2012-09-22 2013-09-19 Method and device for roll-forming workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12006680.8A EP2711103B1 (fr) 2012-09-22 2012-09-22 Procédé et dispositif de formage des pièces à usiner par fluotournage

Publications (2)

Publication Number Publication Date
EP2711103A1 EP2711103A1 (fr) 2014-03-26
EP2711103B1 true EP2711103B1 (fr) 2014-10-15

Family

ID=47008242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12006680.8A Active EP2711103B1 (fr) 2012-09-22 2012-09-22 Procédé et dispositif de formage des pièces à usiner par fluotournage

Country Status (5)

Country Link
US (1) US9662695B2 (fr)
EP (1) EP2711103B1 (fr)
ES (1) ES2527395T3 (fr)
MX (1) MX2014014793A (fr)
WO (1) WO2014044396A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3025802B1 (fr) * 2014-11-28 2021-05-12 REPKON Machine and Tool Industry and Trade Inc. Dispositif et procédé pour le fluotournage des pièces à usiner
CN106040815A (zh) * 2016-06-22 2016-10-26 宁波五谷金属制品有限公司 一种细颈容器的拉伸装置及制作方法
CN114425578A (zh) * 2021-12-31 2022-05-03 芜湖顺联智能装备有限公司 一种旋压机的旋轮结构

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545506A1 (de) * 1985-12-20 1987-07-02 Man Technologie Gmbh Werkzeug zum drueckwalzen von hohlzylindrischen werkstuecken
DE4140948C2 (de) * 1991-12-12 1993-11-11 Schwager Aribert Prof Dr Ing H Verfahren zur Herstellung rohrförmiger Teile
US20100236122A1 (en) * 2006-07-26 2010-09-23 Fonte Matthew V Flowforming Gun Barrels and Similar Tubular Devices
JP5435190B2 (ja) * 2007-03-30 2014-03-05 日立オートモティブシステムズ株式会社 管体の加工方法及びシリンダ装置の製造方法
PL2210682T3 (pl) * 2009-07-09 2012-07-31 Leifeld Metal Spinning Ag Sposób wyoblania z walcowaniem oraz urządzenia do wyoblania z walcowaniem półwyrobu w kształcie rury

Also Published As

Publication number Publication date
WO2014044396A1 (fr) 2014-03-27
ES2527395T3 (es) 2015-01-23
US9662695B2 (en) 2017-05-30
EP2711103A1 (fr) 2014-03-26
US20150027190A1 (en) 2015-01-29
MX2014014793A (es) 2015-02-24

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