US20170274433A1 - Method for Transverse Rolling - Google Patents

Method for Transverse Rolling Download PDF

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Publication number
US20170274433A1
US20170274433A1 US15/467,010 US201715467010A US2017274433A1 US 20170274433 A1 US20170274433 A1 US 20170274433A1 US 201715467010 A US201715467010 A US 201715467010A US 2017274433 A1 US2017274433 A1 US 2017274433A1
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US
United States
Prior art keywords
cross rolling
component
tool
rotation
rolling method
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.)
Abandoned
Application number
US15/467,010
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English (en)
Inventor
Hans-Willi RAEDT
Holger Beyersdorfer
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.)
Hirschvogel Umformtechnik GmbH
Original Assignee
Hirschvogel Umformtechnik GmbH
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 Hirschvogel Umformtechnik GmbH filed Critical Hirschvogel Umformtechnik GmbH
Assigned to HIRSCHVOGEL UMFORMTECHNIK GMBH reassignment HIRSCHVOGEL UMFORMTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Beyersdorfer, Holger, RAEDT, HANS-WILLI
Assigned to HIRSCHVOGEL UMFORMTECHNIK GMBH reassignment HIRSCHVOGEL UMFORMTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Beyersdorfer, Holger, RAEDT, HANS-WILLI
Publication of US20170274433A1 publication Critical patent/US20170274433A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B21B31/185—Adjusting or positioning rolls by moving rolls axially and by crossing rolls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/361—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with cylindrical rollers
    • F16C19/362—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with cylindrical rollers the rollers being crossed within the single row

Definitions

  • the present invention relates to a cross rolling method and an apparatus for carrying out the method, a component produced in accordance with the method and a cross rolling tool.
  • Cross rolling methods are sufficiently well-known from the prior art. During cross rolling, shaping of a rotationally symmetrical blank takes place between two cross rolling tools. Here, a distinction is to be drawn between round cross rolling and flat die cross rolling.
  • the blank or the rolling material rotates about its own axis between two tool rolls rotating in the same direction.
  • shaping is generally carried out by feeding in at least one tool roll and on the basis of the geometries of the rolling tool surface.
  • the blank or the rolling material is shaped between two tool plates running horizontally or vertically and translationally with respect to each other.
  • the tools of flat die cross rolling are distinguished by a substantially flat geometry.
  • the cross rolling methods are distinguished, amongst other things, by the achievement of high shape and dimensional accuracies of the workpieces, a comparatively higher sequence of items as compared with removal processes, high material utilization and high-volume throughput, low impairment of the workpiece structure, high tool service lives and low tool and fabrication costs.
  • Cross rolling methods thus constitute an economically particularly interesting method for shaping in particular elongated components.
  • the present invention relates to a cross rolling method which is distinguished by the step of shaping a component blank rotating about a main axis of rotation by means of at least two cross rolling tools located substantially opposite each other with respect to the component blank; and specifically to the production of a component that is at least partly non-rotationally symmetrical and non-cyclically symmetrical with respect to the main axis of rotation, by moving the cross rolling tools along their main direction of movement.
  • At least partly is to be understood to mean that only individual circumferential areas or sections of the component (blank), viewed along the main axis of rotation, are non-rotationally symmetrically and non-cyclically symmetrically shaped, viewed along the main axis of rotation; or else the entire component.
  • the other areas/sections of the component (blank) can even not be shaped or, to achieve a rotationally symmetrical contour of the component, for example, shaped with respect to its main axis of rotation.
  • Non-rotationally symmetrical and non-cyclically symmetrical is to be understood to mean every asymmetric configuration of the component, for example in its cross section (at least—viewed axially—in subareas of the component; cf., for example, FIG. 3 ) or with respect to its overall geometric configuration (cf., for example, FIG. 2 ), in particular with reference to its main axis of rotation or its “main axis of symmetry”.
  • an eccentric-like (for example displacement of the mass center of gravity out of the main axis of rotation or “main axis of symmetry”) and/or non-round (for example egg-shaped) formation at least—viewed axially—of subareas of the component are conceivable here, the application not being restricted hereto.
  • the main direction of movement of the cross rolling tools can be a rotational or translational main direction of movement.
  • a combination of these is also conceivable, wherein then at least one proportion of the translational main direction of movement can, for example, represent a translational feeding movement of the cross rolling tool with respect to (i.e., for example, at right angles to) the main axis of rotation of the component blank.
  • the cross rolling method according to the invention can be any desired cross rolling method; i.e., for example, a round cross rolling method or a flat die cross rolling method. Consequently, the cross rolling method according to the invention can be applied to all known cross rolling methods. Even if previously the option of a translational direction of movement of the cross rolling tools in the course of a feeding movement of the same with respect to the main axis of rotation of the component blank was represented as a possible option, then the component blank is preferably (solely) shaped by the tool geometry of the cross rolling tools. In this way, the construction of a corresponding apparatus can also be designed in a simplified manner.
  • the cross rolling tools can be two tool rolls preferably rotating in the same direction with a rotational main direction of movement about their axis of rotation, or two tool plates running translationally with respect to each other with their translational main direction of movement in the plane of their extent. In principle, more than two corresponding cross rolling tools are also conceivable, although this is not always desired for reasons of space.
  • a method corresponding to a round cross rolling method is preferably carried out; when tool plates are used for the cross rolling method, a method corresponding to a flat die cross rolling method is preferably carried out.
  • plane of their extent is understood to mean the plane of the preferably flat cross rolling tool (tool plate) extending parallel to the main direction of movement and preferably also parallel to the main axis of rotation of the component, for example for one type of flat die cross rolling method.
  • the axes of rotation of the tool rolls and the translational main directions of movement of the tool plates or the planes of their extent are preferably oriented parallel to one another, in order thus preferably to lie opposite each other during the cross rolling method and thus to effect the most effective shaping possible, since the component is then provided/clamped in centrally between the tools.
  • the cross rolling tools have a surface contour which is complex and preferably resulting from the application of material flow FEM (finite element methods). This surface contour is given on the basis of the desired final contour of the component blank, the tools to be used, the type of cross rolling method, the dimensions both of the component blank, on the one hand, and also of the cross rolling tools, on the other hand, and/or the materials used, this enumeration not being final.
  • the surfaces of the cross rolling tools can have a non-constant spacing from the axis of rotation.
  • this applies in particular to the tool rolls of a round cross rolling method.
  • a “non-constant spacing from the axis of rotation” within the context of the invention means that, in the corresponding areas of the cross rolling tool with which the corresponding parts/sections of the component blank are to be shaped in a non-rotationally symmetrical and non-cyclically symmetrical way, are formed non-rotationally symmetrically with respect to the axis of rotation of the tool.
  • the cross rolling tool has a changing radius, viewed over the circumference, which can change in any desired way in accordance with the desired final geometry of the component, viewed over the circumference; that is to say, for example, abruptly, smoothly, linearly, non-linearly, in combinations thereof and in other desired ways.
  • the surfaces of the cross rolling tools can have a non-constant spacing from the plane of extent. This applies in particular to the tool plates of a flat die cross rolling method.
  • a “non-constant spacing from the plane of extent” is understood to mean that, in a way similar to the “non-constant spacing from the axis of rotation” of the previously described tool rolls, the spacing of the currently effective surface of the cross rolling tool from the main axis of rotation of the component blank varies along the main direction of movement and, likewise, for example along the main direction of movement, can change abruptly, smoothly, linearly, non-linearly, constantly, non-constantly, in combinations thereof and in any other desired way.
  • the surface areas of a cross rolling tool that are effective for the shaping can always lie accurately opposite the same surface areas of the component blank that are to be shaped.
  • the rolling operations between component blank and cross rolling tools are preferably coordinated with one another in such a way that, as viewed over the circumference of the component blank, the same (at least relating to the geometry; i.e. geometric or geometrically identical) areas of the cross rolling tools are always assigned to the same areas of the component blank.
  • the cross rolling tool preferably rotates exactly once through 360° about its axis of rotation for the processing of a workpiece, wherein the workpiece rotates at least likewise once or preferably also many times about its main axis of rotation.
  • “Relating at least to the geometry” means that it does not actually have to be the identical areas of the cross rolling tool which are assigned to the same areas of the component blank. In principle, it is also conceivable that geometrically identical areas are respectively always assigned to the same areas of the component blank; this, for example, during a periodic repetition of corresponding surface contours. It is also conceivable that the cross rolling tools are formed in such a way that it is just always other areas of the cross rolling tool, which, preferably during a movement sequence, as viewed in a direction of the main direction of movement, are brought into effective contact with the component blank for the purpose of the shaping, that come into contact with the same areas of the component blank, in order thus for example to permit continuous shaping—that is to say stepwise shaping of the respective areas.
  • one of the cross rolling tools can have at least one subarea with a contour through which material is forced at right angles to the main axis of rotation of the component blank (preferably in the radial direction as viewed towards the main axis of rotation)—that is to say preferably radially.
  • the substantially opposite cross rolling tool can have a corresponding contour assigned to the subarea of the one cross rolling tool and preferably located opposite in a subarea, in order to accommodate the material forced at right angles to the main axis of rotation of the component blank in the corresponding contour. In this way, for example, the center of gravity of the relevant part/section of the component blank or component can also be displaced out of the main axis of rotation by means of a cross rolling method.
  • one of the cross rolling tools can have at least one subarea with a contour in order to force material at right angles to the main axis of rotation of the component blank—i.e. preferably radially, wherein the substantially opposite cross rolling tool has a contour assigned to the subarea of the one cross rolling tool and preferably located opposite in a subarea, in order in the same way to force material at right angles to the main axis of rotation of the component blank—i.e. preferably radially.
  • the material of the component blank is forced from two opposite sides toward each other, in order, in this circumferential and axially preferably limited subarea of the cross rolling tools, to achieve a non-round shape of the component, for example.
  • a cross rolling tool can also have more than one of the aforementioned subareas.
  • the number and (axial) width of the same are not limited. Of course, any desired number of different subareas, as previously described, can also be provided.
  • the subarea can extend axially or in its width over the entire cross rolling tool; at least in the active area of the cross rolling tool.
  • the contour(s) can form elevations and/or cavities with respect to the central surface spacing of the cross rolling tools with respect to the main axis of rotation of the component blank.
  • the contour preferably has elevations and/or cavities as geometry or geometries in the tool surface.
  • the contour(s) can have periodically repeating geometries over the rolling length of the cross rolling tool.
  • defined elevations and/or cavities can therefore extend periodically (repeatedly) over the rolling length of the cross rolling tool.
  • the present invention likewise relates to a cross rolling tool for producing an at least partly non-rotationally symmetrical and non-cyclically symmetrical component.
  • the cross rolling tool can have a complex surface contour, preferably resulting from the application of material flow FEM.
  • the surface of the cross rolling tool can have a non-constant spacing from the axis of rotation of the cross rolling tool.
  • the surface of the cross rolling tool can have a non-constant spacing from the plane of extent.
  • the cross rolling tool can preferably have at least one subarea with a contour by which material can be forced away from the cross rolling tool or can be accommodated in the contour.
  • the contour can have elevations and/or cavities as geometry or geometries in the tool surface.
  • the contour can also have periodically repeating geometries over the rolling length of the cross rolling tool. It is also conceivable for elevations and/or cavities to be formed periodically (repeatedly) over the rolling length of the cross rolling tool.
  • the repeating geometries can differ slightly from one another during each revolution of the component (blank), in such a way that they effect stepwise shaping of the component (blank).
  • the present invention relates to an apparatus for carrying out the method according to the invention, wherein the apparatus preferably uses a cross rolling tool according to the present invention.
  • the present invention also relates to a component produced in accordance with the method according to the invention.
  • FIG. 1 shows, schematically, a component produced by a conventional cross rolling method in a simplified illustration, only one (upper) side with respect to the axis of rotation of the rotationally symmetrical component being illustrated,
  • FIG. 2 shows, schematically, a component according to the invention according to a first exemplary embodiment of the invention
  • FIG. 3 shows, schematically, a component according to the invention according to a second exemplary embodiment of the invention in two illustrations which are not true to scale in relation to each other.
  • the component 10 illustrated in FIG. 1 represents a component 10 produced by means of a conventional cross rolling method, which is formed rotationally symmetrically with respect to its axis of rotation R 10 (only one (upper) side with respect to the axis of rotation R 10 of the component 10 is illustrated).
  • FIG. 2 in simplified form, a component 1 according to the invention according to a first exemplary embodiment of the invention is illustrated.
  • the component 1 In the areas A and C illustrated with respect to the longitudinal or main axis of rotation R 1 of the component 1 , the component 1 has been shaped in a conventional way and, in these areas A, C, is formed rotationally symmetrically.
  • the component 1 according to the invention has been shaped correspondingly in such a way that this area B is formed non-rotationally symmetrically and non-cyclically symmetrically with respect to the main axis of rotation R 1 of the component 1 .
  • the axis (of symmetry) R B of this region B has been moved away or offset out of the main axis of rotation R 1 of the component 1 , and thus the mass center of gravity in the area B is arranged to be displaced downward from the main axis of rotation R 1 in FIG. 2 .
  • the configuration according to FIG. 2 may be used, for example, in the area of crankshafts.
  • the component 1 illustrated in FIG. 2 has been produced by a method according to the invention with tools according to the invention, as described above; for example, by providing mutually opposite cavities (tool at the bottom) and elevations (tool at the top), so that, with appropriately oppositely acting tools, the material is forced and flows into the lower area of the component 1 shown in FIG. 2 .
  • FIG. 3 shows a further component 2 according to the invention according to a second exemplary embodiment of the present invention.
  • this component 2 also has areas A, C which are symmetrical with respect to its longitudinal or main axis of rotation R 2 , which are formed rotationally symmetrically in particular with respect to the main axis of rotation R 2 .
  • the component 2 according to FIG. 3 also has an area B which is non-rotationally symmetrical and non-cyclically symmetrical with respect to the main axis of rotation R 2 . In this area B, not only is the mass center of gravity displaced with respect to the main axis of rotation R 2 (upward here).
  • the geometry of the component 2 in this area B is non-round (egg-shaped here, for example), as is illustrated in FIG. 3 b , which shows a section—not true to scale—through the component 2 in FIG. 3 a .
  • Such a configuration can be used, for example, in the area of camshafts.
  • the component 2 illustrated in FIG. 3 has also been produced by a method according to the invention with tools according to the invention, as described above.
  • the areas O, U bulged upward and downward in FIG. 3 b of the “egg-shaped” cross-sectional geometry have been produced, for example, by providing mutually opposite cavity (tool at the top) and elevation (tool at the bottom) in the appropriate revolving partial sections of the tools or tool surfaces, so that, with appropriately oppositely acting tools, the material is forced and flows into the upper area O of the component 1 shown in FIG. 3 b .
  • 3 b have been produced, for example, by providing mutually opposite elevations in the corresponding revolving partial sections of the tools or tools surfaces, so that, with appropriately oppositely acting tools, the material is forced and flows towards each other in the lateral areas L, R of the component 1 shown in FIG. 3 b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US15/467,010 2016-03-24 2017-03-23 Method for Transverse Rolling Abandoned US20170274433A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016204994.1 2016-03-24
DE102016204994.1A DE102016204994B4 (de) 2016-03-24 2016-03-24 Querwalzverfahren, Vorrichtung zur Durchführung des Verfahrens sowie damit hergestelltes Bauteil

Publications (1)

Publication Number Publication Date
US20170274433A1 true US20170274433A1 (en) 2017-09-28

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ID=59814269

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/467,010 Abandoned US20170274433A1 (en) 2016-03-24 2017-03-23 Method for Transverse Rolling

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US (1) US20170274433A1 (zh)
CN (1) CN107225205B (zh)
DE (1) DE102016204994B4 (zh)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4811585A (en) 1986-04-02 1989-03-14 Nissan Motor Co., Ltd. Device for forming asymmetrical articles by rolling
US5001918A (en) * 1987-11-04 1991-03-26 Stepanenko Alexandr V Method and apparatus for making blanks of a profile varying lengthwise
CN1326822A (zh) * 2000-06-04 2001-12-19 李传彬 楔横轧精密轧制工艺
DE102010031316B4 (de) * 2010-07-14 2013-01-24 Hilti Aktiengesellschaft Herstellungsverfahren für ein längliches Halbzeug

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CN107225205B (zh) 2019-07-12
DE102016204994A1 (de) 2017-09-28
CN107225205A (zh) 2017-10-03
DE102016204994B4 (de) 2018-10-31

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