WO2019158428A1 - Machine de déformation et procédé de déformation - Google Patents

Machine de déformation et procédé de déformation Download PDF

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Publication number
WO2019158428A1
WO2019158428A1 PCT/EP2019/053015 EP2019053015W WO2019158428A1 WO 2019158428 A1 WO2019158428 A1 WO 2019158428A1 EP 2019053015 W EP2019053015 W EP 2019053015W WO 2019158428 A1 WO2019158428 A1 WO 2019158428A1
Authority
WO
WIPO (PCT)
Prior art keywords
forming
main spindle
spindle unit
workpiece
unit
Prior art date
Application number
PCT/EP2019/053015
Other languages
German (de)
English (en)
Inventor
Benedikt Nillies
Original Assignee
Leifeld Metal Spinning Ag
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 Leifeld Metal Spinning Ag filed Critical Leifeld Metal Spinning Ag
Priority to EP19706246.6A priority Critical patent/EP3681653B1/fr
Publication of WO2019158428A1 publication Critical patent/WO2019158428A1/fr

Links

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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/30—Making other particular articles wheels or the like wheel rims

Definitions

  • the invention relates to a forming machine for forming a tubular workpiece with a machine base body, a first main spindle unit to which a first spinning chuck mounted and rotationally driven about a main spindle axis, a second main spindle unit, on which a second spinning chuck mounted and rotationally driven about the main spindle axis wherein the second main spindle unit is axially opposed to the first main spindle unit and the two main spindle units are axially displaceable relative to each other between a reshaping position in which the workpiece is axially clamped between the first main spindle unit and the second main spindle unit and a set-up position the first main spindle unit is axially spaced from the second main spindle unit for feeding and removing the workpiece, at least one first forming roller unit, which is for forming on the clamped and rotationally driven W can be fed deliverable, and at least one second Umformrollenhow which can be fed for forming the clampe
  • the invention further relates to a method for forming according to claim 13.
  • a method and a spinning machine for producing a drum-shaped workpiece are known.
  • a cup-shaped preform is clamped to a two-part spinning chuck and set in rotation.
  • the Circumferential wall is formed by means of at least one forming roller.
  • rim rings for vehicle wheels can be produced in an efficient manner using this known method.
  • the invention is based on the invention to provide a forming machine and a method for forming a tubular workpiece, with which a particularly efficient non-cutting forming of a tubular workpiece can be achieved.
  • the object is achieved according to the invention by a forming machine with the features of claim 1 and a method according to claim 13. Preferred embodiments of the invention are given in the dependent claims.
  • the forming machine according to the invention is characterized in that the at least one first forming roller unit is associated with the first main spindle unit and has a first roller shaft, at one end of which a first forming roller is attached and the other end of the roller shaft is directed to the first main spindle unit, in that the at least one second forming roller unit is associated with the second main spindle unit and has a second roller shaft, at one end of which a second forming roller is attached and the other end of the second roller shaft is directed to the second main spindle unit, and the two forming roller units are used for simultaneously forming the workpiece are deliverable.
  • a basic idea of the invention consists in the fact that the spinning chuck is divided into two parts for forming an inner contour of the annular workpiece, wherein each of the two spinning chucks is assigned at least one forming roller unit with a forming roller.
  • the required movement for free movement for loading and unloading can be divided between the two spinning chucks.
  • both spindle units can be moved axially.
  • the cycle time can be shortened.
  • the forming roller units are designed such that the forming rollers are each directed towards the center of the workpiece at the free shaft end, while the other shaft end and the other elements of the forming roller unit are facing away from the workpiece and directed to the respective side of the associated main spindle unit.
  • This arrangement makes it possible for the at least two forming roller units arranged so axially opposite to one another to be able to engage the workpiece at the same time and to carry out a forming, in particular a pressure-rolling.
  • forming can not only be carried out by a plurality of forming rollers, which lie radially opposite one another, but also by forming rollers, which lie axially opposite one another.
  • the processing is preferably carried out by the Umformrollenein- in each case on the workpiece half, which is assigned to the respective spinning chuck half.
  • the forming regions on the spinning chuck may be the same or preferably uneven, in particular with different lengths. Different forming speeds can be realized on the spinning chuck.
  • This assignment according to the invention also shortens the feed and return movements of the forming roller units, which likewise leads to a reduction of the cycle times.
  • the forming roller units can be relatively quickly moved into a retracted setup position, so that the two Drückfutterhein axially moved apart, removed the workpiece and a newly machined workpiece can be used. Due to the overall low axial and / or radial stroke of the forming roller units, the necessary clearance for starting the loading and unloading process is achieved very quickly, which has a positive effect on the overall cycle time.
  • the roller shafts of the forming roller units can be directed parallel to the main spindle axis.
  • a shaft axis of the first forming roller unit and / or of the second forming roller unit is directed at an angle of between 5 ° and 85 ° to the main spindle axis.
  • first Umformrollenticianen are provided, which are each offset by 180 ° to each other and form a first Umformrollencru
  • second Umformrollenhowen are provided, each offset by 180 ° to each other are and form a second Umformrollencru.
  • lateral forces on each half of the spinning chuck can compensate for symmetrical delivery of Umformrollenticianen.
  • the forming speed increases with the number of conversion roller units, which also has a positive effect on the cycle time.
  • a set of forming roll units can also have three Umformrollenticianen or more, which are then arranged at an equal circumferential distance from each other.
  • a particularly advantageous embodiment variant is achieved in that the first Umformrollenrun to the second Umformrollencru by an angle between 70 ° to 1 10 °, preferably offset by 90 °.
  • the axially opposed Umformrollenhimen can not be limited in their axial movement space, so that in principle a processing of the first Umformrollenrunes in the region of the second spinning chuck and vice versa, editing of the second Umformrollenrunes on the opposite first Drückfutter is possible.
  • This also has an advantageous effect on the quality of the workpiece and the cycle time.
  • the forming roller pairs can be moved equal or preferably unequal. In particular, rims are formed asymmetrically, so that, for example, the forming roller pairs are moved at different delivery speeds.
  • the forming roller pairs can lie in a common horizontal or vertical plane as in conventional forming machines.
  • a particularly advantageous embodiment of the forming machine according to the invention results from the fact that the Umformrollenrune are arranged in an inclined position to the horizontal and the vertical.
  • the planes in which the two forming units lie on one side can preferably have an angle of between 15 ° and 75 ° to the horizontal or to the vertical. In a plan view, this results in an X-shaped arrangement of the mutually axially and radially staggered Umformrollen- pairs.
  • the space in the main spindle axis can be used particularly well.
  • a further advantageous embodiment of the forming machine according to the invention consists in that a first support is provided, on which the first main spindle unit and the at least one first forming roller unit are mounted, and that a second support is provided, on which the second main spindle unit and the at least one second Umformrollenech are stored.
  • the individual bearings, in particular of the forming roller units are preferably accommodated in an annularly closed support frame, so that the high forming forces can be absorbed almost optimally.
  • the respective Umformrollen- pairs are advantageously carried out the same and can be moved axially and radially on a same path. For higher wall thickness reductions or good surfaces, an axial and / or radial offset between the forming rollers can also be set. This can be manually adjustable or automatically done in a preferred manner via a CNC control.
  • the forming roller units are displaceably mounted to the respective support and / or the respective associated main spindle unit movable.
  • the forming rollers of the individual forming roller units can be rotatably driven by friction by the rotationally driven workpiece.
  • at least one forming roller unit has at least one rotary drive for rotationally driving the roller shaft.
  • the forming roller unit can be driven synchronously to the rotating workpiece by the rotary drive.
  • the setting of the rotational speed at the individual rotary drives of the conversion roller units can preferably take place automatically via the CNC control.
  • the outer Drückfuttergeometrien can be performed symmetrically or preferably asymmetrically.
  • the outer contour of the spinning chuck depends on the desired inner contour of the workpiece to be formed.
  • the two Drückfutterhcran are axially, preferably driven against each other in contact.
  • axial preforming or tensioning of the preform can preferably take place in the later deep-bed region of a rim ring. Due to the forming process or the expansion for preform production, the preform can have tolerances in the deep bed area, which makes sufficient torque transmission at high forming capacities difficult.
  • a clamping device for clamping and holding the workpiece on at least one spinning chuck.
  • the tensioning device can in particular be a radial tensioning device with extendable radial tensioning device. be claws, which are extendable to at least one of the spinning chuck on the inner circumference and / or outer circumference of the workpiece. Further, it is preferred that a tensioning device enables a calibration of the deep bed area of a rim.
  • a further preferred embodiment of the forming machine according to the invention consists in that at least one handling device is provided for loading and / or unloading the workpiece.
  • the two spinning chucks or spindle bearings are moved apart.
  • the workpiece is preferably held in position by the handling device.
  • the handling device may preferably have a gripper and / or two opposing scrapers.
  • Particularly preferred is a gripper or scraper, which is characterized by a slim design, so that the workpiece is securely held in position during free travel, so that at the same time a free driving of the spindle units can be done.
  • the handling device has a gripping arm which is arranged approximately centrally between the first main spindle unit and the second main spindle unit in the set-up position.
  • the travel movements of the two main spindle units and of the respectively associated forming roller units can also be kept relatively low. Only clearance between the two main spindle units needs to be created which is slightly larger than the axial length of the workpiece.
  • the loading and unloading device is preferably designed so stable that they keep the blanks or finished parts when moving apart or Caribbeanfah- ren of the spinning chuck without auxiliary devices in a loading and unloading position, preferably in a fixed position defined.
  • the loading and unloading can also be done with robots. It is also possible to use pneumatic parallel lifters. For reasons of cycle time, a combined opening or closing movement can preferably be dispensed with.
  • a rotary drive can only be arranged on one of the main spindle units.
  • the other main spindle unit would then be in the cocked position passively turn.
  • a particularly efficient method implementation is achieved according to an embodiment of the invention in that the two main spindle units each have their own drive. Both main spindle units are provided with an axial travel drive.
  • the axial movement of the two main spindle units is preferably carried out in each case via an axial feed for the first main spindle side and a nen for the second main spindle side, which can also be called tailstock side.
  • a feed for the first main spindle side and a nen for the second main spindle side which can also be called tailstock side.
  • the feed can alternatively be combined with the support feed. Traversing movements can be carried out with one axis.
  • a main spindle unit is preferably moved to a stop and / or the other main spindle unit is designed with a lower axial force.
  • the control of the position is carried out by measuring systems, so that different speeds and / or positions can be driven.
  • the contact pressure on the second main spindle side is automatically changed by a CNC control depending on machine or process parameters. Alternatively, both could be executed as a CNC axis with identical forces.
  • the invention basically also comprises a forming method for forming a tubular workpiece, in particular with the forming machine described above, wherein a first main spindle unit, to which a first spinning chuck is attached, is rotationally driven about a main spindle axis, a second main spindle unit, on which a second spinning chuck is rotatably driven about the main spindle axis, the second main spindle unit being axially opposed to the first main spindle unit, and the two main spindle units being relatively axially clamped between a forming position in which the workpiece is axially clamped between the first main spindle unit and the second main spindle unit; and a set-up position are axially displaced, in which the first main spindle unit from the second main spindle unit for feeding and discharging the workpiece are axially spaced, at least one first Umformrollenhow for forming on the e is supplied in-tensioned and rotationally driven workpiece and at least one second Um
  • the method can be provided to produce at least two different wall thicknesses per side by projecting, projecting-extruding rollers and / or spinning rollers. It is also preferably provided to roll over the open ends of the workpiece or not to stop or ventilate the forming rollers before the end of the material. Preferably, the forming speeds or surface and WandMarchnreddu Needlessgrade be adapted to the requirements of the rim.
  • FIG. 1 shows a schematic side view of essential components of a forming machine according to the invention during loading
  • Fig. 2 is a side view of the forming machine of Fig. 1 at the beginning of
  • FIG. 3 shows a side view corresponding to FIG. 2 at the conclusion of the re-forming
  • FIG. 4 is a side view corresponding to Fig. 1 when removing the deformed workpiece.
  • a forming machine 10 according to the invention in various processing states is shown in FIGS. 1 to 4. 1 shows a set-up position of the forming machine 10, in which the first main spindle unit 12 with the first spinning chuck 14 and the second main spindle unit 16 with the second spinning chuck 18 are moved apart axially, so that there is a free space between the two halves of the spinning chucks 14, 18 is formed.
  • a gripping arm 52 of a schematically illustrated flat handling device 50 By means of a gripping arm 52 of a schematically illustrated flat handling device 50, a workpiece 5 to be reshaped is delivered coaxially to a main spindle axis 20 between the first spinning chuck 14 and the second spinning chuck 18.
  • a centering shoulder 15 is formed, which can be moved into a corresponding centering recess (not shown) on the second spinning chuck 18, so that the first spinning chuck 14 and the second spinning chuck 16 are coaxial with the main spindle axis 20 in a working position moved together on contact are arranged.
  • the first main spindle unit 12 with the first spinning chuck 14 is assigned two identical forming roller units 22 which are arranged offset by 180 ° about the main spindle axis 20 relative to one another.
  • the first two forming roller units 22 form a first forming roller pair 30.
  • Each first forming roller unit 22 has a first forming roller 24, which is attached to a free end of a first roller shaft 26 indicated only schematically.
  • the first forming roller 24 is directed towards the workpiece 5, while the other end of the first roller shaft 26 is directed away from the workpiece 5.
  • the first roller shaft 26 is rotatably mounted in a first housing 23 via bearings, not shown.
  • the forming roller 24 can be rotationally driven via a rear first rotary drive 28, so that the first forming roller 24 can be delivered at a synchronous speed to the clamped and rotationally driven workpiece 5.
  • a second Umformrollencover 40 with two second Umformrollenhowen 32 is arranged.
  • the second forming roller units 32 are formed identically to the first forming roller units 22 and accordingly have a second forming roller 34, a second housing 33, a second roller shaft 36 and a second rotary drive 38.
  • the second forming roller units 32 are arranged so that the second forming rollers 34 are directed to the workpiece 5, while the second roller shafts 36 are directed away from the workpiece 5.
  • FIG. 1 further shows that the first forming roller pair 30 and the second forming roller pair 40 are each arranged relatively close to the respectively assigned first spinning chuck 14 and the second spinning chuck 18 in the set-up position. Thus, no large travel paths have to be carried out for the forming units 22, 32 between setup and processing position, which has a positive effect on the cycle time.
  • the workpiece 5 to be reshaped which has a conical preforming on both sides, is axially clamped axially between the first spinning chuck 14 and the second spinning chuck 18 by corresponding relative axial movement of the two main spindle units 12, 16.
  • the workpiece 5 is rotationally driven via a rotary drive (not shown), which can be arranged both on the first spindle spindle unit 12 and the second main spindle unit 16.
  • the first forming rollers 24 of the first forming roller pair 30 contact an outer side of the workpiece 5 in the region of the first spinning chuck 14, while the second forming rollers 34 of the second Umformrol- lenpases 40 the workpiece 5 significantly in the region of the second spinning chute 18 contact.
  • the two Umformrollenrune 30, 40 are rotated relative to each other by 90 °, so that a collision of the first forming rollers 24 is avoided with the second forming rollers 34.
  • the contacting of the forming rollers 24, 34 with the workpiece (5) can take place at the same time. However, it may also be a time-delayed contact, so that the torque requirement does not increase excessively. Due to different feed speeds, the forming rollers 24, 34 can reach their final position at the same time.
  • the workpiece 5 is definedly reduced in its wall thickness, resulting in an axial elongation of the workpiece 5.
  • the workpiece 5 is formed on the outer contour of the first spinning chuck 14 and the second spinning chuck 18, so that the spinning chucks 14, 18 largely predetermine an inner contour of the workpiece 5.
  • the forming rollers 24, 34 initially begin in a central region of the workpiece 5 and subsequently the forming rollers 24, 34 with the corresponding forming units 22, 32 are exposed to the outside move to the free ends of the workpiece 5. After completion of the forming so the forming units 22, 32 only a small distance from the workpiece 5 must be spaced to be in the set-up position for loading and unloading of the forming machine 10.
  • the gripping arm 52 of the flap handling device 50 is returned to the shaped workpiece 5, which in the embodiment shown is a rim for a motor vehicle wheel.
  • the two spinning chucks 14, 18 are again moved apart axially with the corresponding main spindle units 12, 16. Then, the workpiece 5 can be removed via the gripping arm 52 radially to the main spindle axis 20 and replaced by a new workpiece 5 to be formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne une machine de déformation servant à déformer une pièce tubulaire, comportant un corps de base de machine, un premier ensemble broche principal sur lequel est monté un premier mandrin de repoussage et qui peut être entraîné en rotation autour d'un axe de broche principal, et un second ensemble broche principal sur lequel est monté un second mandrin de repoussage et qui peut être entraîné en rotation autour de l'axe de broche principal. Le second ensemble broche principal est axialement à l'opposé du premier ensemble broche principal, et les deux ensembles broche principaux peuvent être déplacés axialement entre une position de déformation, dans laquelle la pièce est serrée axialement entre le premier ensemble broche principal et le second ensemble broche principal, et une position de montage, dans laquelle le premier ensemble broche principal est éloigné axialement du second ensemble broche principal pour l'amenée et l'évacuation de la pièce. La machine comporte au moins un premier ensemble de rouleaux de déformation qui peut être avancé pour déformer la pièce serrée et entraînée en rotation, et au moins un second ensemble de rouleaux de déformation qui peut être avancé pour déformer la pièce serrée et entraînée en rotation.
PCT/EP2019/053015 2018-02-16 2019-02-07 Machine de déformation et procédé de déformation WO2019158428A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19706246.6A EP3681653B1 (fr) 2018-02-16 2019-02-07 Machine de formage et procédé de formage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202018100889.7U DE202018100889U1 (de) 2018-02-16 2018-02-16 Umformmaschine
DE202018100889.7 2018-02-16

Publications (1)

Publication Number Publication Date
WO2019158428A1 true WO2019158428A1 (fr) 2019-08-22

Family

ID=62118027

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/053015 WO2019158428A1 (fr) 2018-02-16 2019-02-07 Machine de déformation et procédé de déformation

Country Status (3)

Country Link
EP (1) EP3681653B1 (fr)
DE (1) DE202018100889U1 (fr)
WO (1) WO2019158428A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112547922A (zh) * 2020-11-18 2021-03-26 哈尔滨工业大学 卧式双对轮多功能可变尺寸复合柔性旋压设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58202927A (ja) * 1982-05-21 1983-11-26 Hitachi Ltd くら形吸込コ−ンの製作方法
JPS59185532A (ja) * 1983-04-06 1984-10-22 Nippon Spindle Mfg Co Ltd 車輪リムの製造方法
DE10115815A1 (de) 2001-01-04 2001-10-04 Leico Werkzeugmaschb Gmbh & Co Drückwalzverfahren und Vorrichtung zum Drückwalzen
WO2004035243A1 (fr) 2002-10-17 2004-04-29 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Procede et dispositif pour produire une jante pour pneumatiques
JP2006095536A (ja) * 2004-09-28 2006-04-13 Topy Ind Ltd スピニング加工用押圧ローラ装置
DE102006057106B3 (de) 2006-12-04 2008-04-03 Leifeld Metal Spinning Gmbh Verfahren und Drückmaschine zum Herstellen eines trommelförmigen Werkstücks
JP2012245551A (ja) * 2011-05-30 2012-12-13 Chuo Motor Wheel Co Ltd リム成形方法
EP2821158A1 (fr) * 2013-07-04 2015-01-07 Hayes Lemmerz Manresa, S.L.U. Procédé de fabrication de jantes de roue et équipement pour son exécution

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58202927A (ja) * 1982-05-21 1983-11-26 Hitachi Ltd くら形吸込コ−ンの製作方法
JPS59185532A (ja) * 1983-04-06 1984-10-22 Nippon Spindle Mfg Co Ltd 車輪リムの製造方法
DE10115815A1 (de) 2001-01-04 2001-10-04 Leico Werkzeugmaschb Gmbh & Co Drückwalzverfahren und Vorrichtung zum Drückwalzen
WO2004035243A1 (fr) 2002-10-17 2004-04-29 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Procede et dispositif pour produire une jante pour pneumatiques
JP2006095536A (ja) * 2004-09-28 2006-04-13 Topy Ind Ltd スピニング加工用押圧ローラ装置
DE102006057106B3 (de) 2006-12-04 2008-04-03 Leifeld Metal Spinning Gmbh Verfahren und Drückmaschine zum Herstellen eines trommelförmigen Werkstücks
JP2012245551A (ja) * 2011-05-30 2012-12-13 Chuo Motor Wheel Co Ltd リム成形方法
EP2821158A1 (fr) * 2013-07-04 2015-01-07 Hayes Lemmerz Manresa, S.L.U. Procédé de fabrication de jantes de roue et équipement pour son exécution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112547922A (zh) * 2020-11-18 2021-03-26 哈尔滨工业大学 卧式双对轮多功能可变尺寸复合柔性旋压设备
CN112547922B (zh) * 2020-11-18 2023-09-26 哈尔滨工业大学 卧式双对轮多功能可变尺寸复合柔性旋压设备

Also Published As

Publication number Publication date
DE202018100889U1 (de) 2018-04-24
EP3681653A1 (fr) 2020-07-22
EP3681653B1 (fr) 2022-07-27

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