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EP3458207A1 - Procédé pour fabriquer un corps de moule - Google Patents

Procédé pour fabriquer un corps de moule

Info

Publication number
EP3458207A1
EP3458207A1 EP17722801.2A EP17722801A EP3458207A1 EP 3458207 A1 EP3458207 A1 EP 3458207A1 EP 17722801 A EP17722801 A EP 17722801A EP 3458207 A1 EP3458207 A1 EP 3458207A1
Authority
EP
European Patent Office
Prior art keywords
preform
tool
temperature
profiling
partially
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.)
Withdrawn
Application number
EP17722801.2A
Other languages
German (de)
English (en)
Inventor
Thomas Grosserüschkamp
Michael Gövert
Thomas FLÖTH
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.)
ThyssenKrupp Steel Europe AG
ThyssenKrupp AG
Original Assignee
ThyssenKrupp Steel Europe AG
ThyssenKrupp 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 ThyssenKrupp Steel Europe AG, ThyssenKrupp AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP3458207A1 publication Critical patent/EP3458207A1/fr
Withdrawn legal-status Critical Current

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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/18—Spinning using tools guided to produce the required profile
    • B21D22/185—Spinning using tools guided to produce the required profile making domed objects
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • 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
    • B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0023—Shaping by pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to a method for producing a shaped body.
  • the invention was based on the object, a method with reduced compared to conventional spinning drums
  • the first temperature and / or second temperature are between 200 ° C and 700 ° C, in particular between 250 ° C and 580 ° C.
  • a temperature from 200 ° C preferably from 250 ° C lower forming forces compared to conventional spin forming are thus necessary when molding in particular the hub on the semifinished product and / or the bell on the preform, since the material softer with increasing temperature and thus connected, is easier to mold.
  • the temperature is limited depending on the alloying elements to a maximum of 700 ° C, in particular to a maximum of 580 ° C in order to suppress a structural change, for example in (partial) austenite, in the material substantially.
  • the first and second temperatures may be the same or different from that mentioned
  • Temperature range can be selected, preferably in dependence on the material and the tools used and / or deformation.
  • the third temperature is between 400 ° C and 1000 ° C, in particular between 480 ° C and 950 ° C.
  • Forming forces in comparison to conventional spin forming can be cured at least in regions during or after profiling according to a preferred embodiment of the inventive method of molding.
  • Hardening during profiling requires that the third temperature be at least Acl for partial austenitizing, preferably at least Ac3 for complete austenitizing.
  • curing may take place after profiling take place, wherein the third temperature is then limited to a maximum of 700 ° C, in particular to a maximum of 580 ° C.
  • a surface hardening is carried out on the shaped body, in particular in the inner area of the bell.
  • Particularly preferred hardenable steel materials are used, which have at least a hardness of 50HRC in the tempered state.
  • the steel material preferably consists of the following alloy constituents in% by weight:
  • HRC is the Rockwell hardness and the hardness test is regulated in DIN EN ISO 6508-1.
  • the semifinished product in the first working step and / or tool and / or the preform with an upper geometrical element in the second working step and / or tool are actively tempered during molding. This can ensure that even after inserting or arranging the warm workpiece, the workpiece is held at a predetermined temperature in the tool by means of suitable arranged and / or integrated means, so that a rapid cooling of the workpiece compared to a cold tool can be avoided.
  • the shaping and / or profiling can each take place in one or more work steps.
  • the generation of the desired (pre-) form can take place in one or more tools.
  • a shaped body is produced in the form of a pivot pin or journal, wherein the profiling in the third tool at least partially in the lower geometric element respectively the bell of the warm preform takes place and at least one embodiment comprises a cage track and / or ball tracks.
  • the profiling in the third tool can take place by means of flow-forming rollers, wherein the profiling takes place, for example, by means of at least one rolled beam and / or at least one profiling roll or cumulatively or alternatively in a profiling tool which has, for example, at least one sliding element.
  • the heating takes place inductively.
  • Inductive heat sources are easy and economical to operate and can at least partially workpieces heat, in particular, the heat treatment depth can be targeted and relatively easily controlled.
  • the heating of the respective workpiece is carried out before placing or inserting in the respective tool and / or before carrying out the respective work step.
  • other heat sources are conceivable, for example heating the workpiece in an oven.
  • the heating outside of the tool is particularly preferred and the cycle time can be increased thereby.
  • FIG. 2 a schematic representation of an exemplary embodiment at the time of the generation of a preform with an upper geometric element
  • FIG. 3 a schematic representation of an exemplary embodiment at the time of heating a preform with an upper geometric element
  • FIG. 4 a schematic representation of an exemplary embodiment at the time of the generation of a preform with an upper and at least one lower geometric element
  • FIG. 5 a schematic representation of an exemplary embodiment at the time of heating a preform with an upper and at least one lower geometric element
  • a blank-shaped semi-finished product (1) made of a steel material, for example hot-rolled, boron-alloyed steel materials is provided.
  • Temperature which is between 200 ° C and 700 ° C, at least partially heated, in particular before the semi-finished product (1) is processed in a first step and / or inserted or arranged in a first tool (7).
  • the at least partially heating inductively by means of an inductor (2).
  • the semifinished product (1) is for example supplied to a device correspondingly equipped with at least one inductor (2) [FIG. 1] or the inductor can be arranged on a supply device, not shown here, which the first tool (7) equipped with the semi-finished product (1).
  • the warm semi-finished product (1) is placed in the first tool (7), in particular arranged in a correspondingly shaped die (4).
  • the die (4) is actively rotatably disposed in the first tool (7).
  • After inserting the warm Semi-finished product (1) is a pin-shaped hold-down (5) centered on the semi-finished (1) equipped die (4) lowered and fixes the semi-finished product (1) against rotation in the die (4).
  • At least one spinning roller (6, 6 ') is lowered onto the warm, rotating semi-finished product (1) and presses material radially from outside to inside, whereby the pushed-on material first accumulates on the pin-shaped holding-down device (5) and the spinning roller (6, 6 ') is driven so that the accumulated material in the further process along the pin-shaped blank holder (5) is pushed up to produce a hub / pin (8).
  • two pressure rollers (6, 6 ') are provided, which are arranged diametrically, so that the lateral action forces on a, for example, with the die (4) connected and not shown here
  • Production of the preform (3) can in the region of the upper geometric element not shown here additional functional elements preferably in the first step or a downstream, separate process step, for example teeth, in particular inside and / or outside in the hub (8), grooves, threads, etc. by means Pressure rollers are molded.
  • the die (4) can be thermally decoupled from further components (not shown), for example the main spindle of the first tool (7) connected to the die (4), in order to substantially prevent heating of the further components of the tool (7) , which may have a negative effect on the life of these components in particular.
  • Temperature which is between 200 ° C and 700 ° C, at least partially heated, in particular before the preform (3) is processed with an upper geometric element in a second step and / or arranged or inserted in a second tool (12).
  • the at least partially Heating inductively by means of an inductor.
  • Geometry element is for example supplied to a corresponding equipped with at least one inductor (2) device [Fig. 3] or the inductor can be arranged on a feed device, not shown, which the second
  • the warm preform (3) with an upper geometric element is transferred to the second tool (12) and, for example, clamped against rotation between a tool core (13) and a holding-down device (9).
  • the tool core (13) and the hold-down device (9) are actively rotatably arranged in the second tool (12), symbolized by the rotating arrow display.
  • At least one spinning roller (6, 6 ') is lowered onto the warm, rotating preform (3) with an upper geometrical element and presses material radially from the inside outwards starting from the hub / pin (8) of the preform (3) Material is pushed along the tool core (13), symbolized by the arrow, wherein the spinning roller (6, 6 ') is driven such that a bell (14) is generated. This creates a
  • Tool core (13) equipped with means for temperature control. Furthermore, the tool core (13) can be thermally decoupled from further components (not shown), for example a main spindle of the second tool (12) connected to the tool core (13), in order to substantially prevent heating of the further components of the tool (12) , which may have a negative effect on the life of these components in particular.
  • the at least partially heating inductively by means of an inductor preferably by means of a ring inductor (2 '), which, as shown in FIG. 5, is arranged externally, in particular, over the bell (14) of the preform (11) and heats the bell (14) at least in regions.
  • a ring inductor can be inserted inside the bell of the preform to heat the bell from the inside.
  • a line inductor can also be arranged from the inside or from the outside in the area of the bell and at least heat the region of the bell of the preform.
  • the preform (11) with an upper and at least one lower geometric element is for example supplied to a device correspondingly equipped with at least one inductor (2 ') [FIG. 5] or the inductor can be arranged on a feed device, not shown, which a third tool (16, 20) with the preform (11) equipped with an upper and at least one lower geometric element.
  • the warm preform (11) with an upper and at least a lower one
  • Geometry element is transferred according to a first embodiment to a third tool (16) and, for example, clamped against rotation on a tool core (22).
  • the tool core (22) is actively rotatably arranged in the third tool (16), symbolized by the rotating arrow display.
  • the tool core (22) which forms the inner contour in the region of the bell (14) of the molded body (15) to be produced, by the action of the at least one rolling beam (23) and / or at least one profiling roll (17) and the tool core (22) on each other ball tracks (24) and / or a cage track (25 ) profiled in the bell (14) by means of flow-forming rollers.
  • Alternatively and not shown here can be used for profiling two or without two 90 ° offset support rollers not shown for profiling or other two to four profiling rollers without or with two offset 90 ° to each other, not shown support rollers for profiling. If hardening is to be carried out during profiling, heating the preform (11) at least in regions to a third temperature of at least Acl for a partial austenitizing, preferably to at least Ac3 for a complete
  • Austenitizing required profiling should be essentially complete before the shaped body (15) reaches the temperature of martensite start (Ms) and the hardening or transformation of the austenite microstructure into martensitic microstructure has taken place.
  • Ms martensite start
  • at least the tool core (22) can be equipped with means for active cooling to the required
  • means for tempering can also be provided.
  • the hardening can take place after profiling, wherein the third temperature is then limited to a maximum of 700 ° C, in particular to a maximum of 580 ° C.
  • Hardening can then be carried out in a further process step by austenitizing the shaped body (15), for example in an oven and quenching, for example in a water or oil bath.
  • an edge layer hardening in particular in the interior region of the profiled bell (10), can be carried out at least in regions, preferably at least in the area of the ball tracks (24).
  • the molded body (15) has at least one hub / pin (8), which further
  • Functional elements may comprise at least one profiled bell (10).
  • the warm preform (11) with an upper and at least a lower one
  • Geometry element is transferred according to an alternative second embodiment to a third tool (20) and clamped against rotation, for example, on a tool core (21).
  • the tool core (21) is non-rotatably arranged in the third tool (20).
  • at least one, preferably a plurality of radially movable mold sliding elements (18), symbolized by the arrow, which are arranged between die elements (19) and the outer contour in the region of the bell (14) of the shaped body to be generated (15 ') and the tool core (21 ), which has the inner contour in the region of the bell (14) of the molded body (15 ') to be produced, are produced by the action of the at least one molded sliding element (18) and / or at least one die element (19).
  • the drive of the at least one mold sliding element (18) takes place, for example, mechanically by means of appropriately designed slides and / or by means of hydraulics. If hardening is to be carried out during profiling, it is necessary to at least partially heat the preform (11) to a third temperature of at least Acl for partial austenitizing, preferably to at least Ac3 for complete austenitizing.
  • the profiling should be done essentially before reaching the temperature of martensite (Ms) in the
  • Shaped body (15 ') must be completed before the hardening or transformation of the austenite microstructure into martensitic structure.
  • at least the tool core (21) can be provided with means for active cooling
  • the tool core (21) may be thermally decoupled from further components, not shown, in order to substantially prevent heating of the further components of the tool (20), which may adversely affect, in particular, the service life of these components.
  • Hardening can then be carried out in a further, separate process step by austenitizing the shaped body (15 '), for example in an oven and quenching, for example in a water or oil bath.
  • an edge layer hardening can be carried out at least in regions, in particular in the inner region of the profiled bell (10 '), preferably at least in the region of the ball tracks (24').
  • the molded body (15 ') has at least one hub / pin (8), which may comprise further functional elements with at least one profiled bell (10').
  • Moldings are produced by the method according to the invention. Ronde-shaped semi-finished product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un corps de moule (15, 15'), comprenant les étapes suivantes consistant à : - fournir un produit semi-fini (1) préformé ou en forme de rond constitué d'un matériau en acier, - chauffer au moins par endroits le produit semi-fini (1) à une première température, - former un moyeu (8) sur le produit semi-fini (1) chaud au moins par endroits pour produire une préforme (3) avec un élément géométrique supérieur dans une première étape de travail et/ou un outil (7) au moyen de fluotournage, - chauffer ou réchauffer au moins par endroits la préforme (3) avec un élément géométrique supérieur à une deuxième température, - former une cloche 14) sur la préforme (3) chaude au moins par endroits avec un élément géométrique supérieur pour produire une préforme (11) avec un élément géométrique supérieur et au moins un élément géométrique inférieur dans une seconde étape de travail et/ou un outil (12) au moyen de fluotournage, - chauffer ou réchauffer au moins par endroits la préforme (11) à une troisième température, - profiler la préforme (11) chaude au moins par endroits pour produire un corps de moule (15, 15') dans une troisième étape de travail et/ou un outil (16, 20).
EP17722801.2A 2016-05-18 2017-05-11 Procédé pour fabriquer un corps de moule Withdrawn EP3458207A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016208462.3A DE102016208462B4 (de) 2016-05-18 2016-05-18 Verfahren zum Herstellen eines Formkörpers
PCT/EP2017/061346 WO2017198544A1 (fr) 2016-05-18 2017-05-11 Procédé pour fabriquer un corps de moule

Publications (1)

Publication Number Publication Date
EP3458207A1 true EP3458207A1 (fr) 2019-03-27

Family

ID=58699163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17722801.2A Withdrawn EP3458207A1 (fr) 2016-05-18 2017-05-11 Procédé pour fabriquer un corps de moule

Country Status (9)

Country Link
US (1) US20190151923A1 (fr)
EP (1) EP3458207A1 (fr)
JP (1) JP2019514699A (fr)
KR (1) KR102312107B1 (fr)
CN (1) CN109475914A (fr)
CA (1) CA3021235C (fr)
DE (1) DE102016208462B4 (fr)
MX (1) MX2018014092A (fr)
WO (1) WO2017198544A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021108520B4 (de) * 2021-04-06 2024-02-29 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung einer Radschüssel für ein Fahrzeugrad
CN114406078A (zh) * 2021-12-23 2022-04-29 芜湖万联新能源汽车零部件有限公司 一种电机轴外圈成型装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4425033C2 (de) 1994-07-15 1999-07-29 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Drückumformen von Werkstücken
DE19617826C2 (de) 1996-05-03 2001-02-01 Leifeld Gmbh & Co Verfahren und Drückeinrichtung zum Herstellen eines Maschinenelementes mit Außenverzahnung
US5947853A (en) * 1996-08-15 1999-09-07 The Gates Corporation Spun pulley with thick hub
JPH10244344A (ja) * 1997-02-28 1998-09-14 Unisia Jecs Corp カップ状ソケット部材の成形装置
US6199419B1 (en) * 1998-04-27 2001-03-13 Emmanuil Shrayer Method for manufacturing a dome from an undersized blank
JP2000126827A (ja) * 1998-10-26 2000-05-09 Kenji Azuma マグネシウム素材のスピニング加工方法及びその装置
US6427329B2 (en) 2000-04-26 2002-08-06 A. J. Rose Manufacturing Co. Method of forming a hub with blind bore
DE10033244A1 (de) 2000-07-10 2002-01-24 Wf Maschinenbau Blechformtech Verfahren zur Herstellung eines eine Nabe aufweisenden Getriebeteiles
DE102012112823A1 (de) * 2012-12-20 2014-06-26 Thyssenkrupp Steel Europe Ag Drückgewalzte Bremsscheibe
DE102013101555B3 (de) 2013-02-15 2014-05-22 Thyssenkrupp Steel Europe Ag Verfahren und Vorrichtung zur Herstellung eines Achszapfens
DE102013106268A1 (de) 2013-06-17 2014-12-18 Thyssenkrupp Steel Europe Ag Verfahren und Vorrichtung zur Herstellung rotationssymmetrischer Metallbauteile
JP6383540B2 (ja) * 2014-01-29 2018-08-29 川崎重工業株式会社 スピニング成形装置
JP6445776B2 (ja) * 2014-04-11 2018-12-26 川崎重工業株式会社 スピニング成形方法
CN104759855B (zh) * 2015-04-21 2015-11-18 盛旺汽车零部件（昆山）有限公司 一种旋压轮毂预加工工艺

Also Published As

Publication number Publication date
DE102016208462A1 (de) 2017-11-23
DE102016208462B4 (de) 2021-10-07
US20190151923A1 (en) 2019-05-23
CN109475914A (zh) 2019-03-15
CA3021235C (fr) 2021-02-09
WO2017198544A1 (fr) 2017-11-23
MX2018014092A (es) 2019-04-01
KR102312107B1 (ko) 2021-10-15
CA3021235A1 (fr) 2017-11-23
JP2019514699A (ja) 2019-06-06
KR20190008886A (ko) 2019-01-25

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