EP2637810A2 - Outil pour l'usinage d'une pièce - Google Patents

Outil pour l'usinage d'une pièce

Info

Publication number
EP2637810A2
EP2637810A2 EP11805185.3A EP11805185A EP2637810A2 EP 2637810 A2 EP2637810 A2 EP 2637810A2 EP 11805185 A EP11805185 A EP 11805185A EP 2637810 A2 EP2637810 A2 EP 2637810A2
Authority
EP
European Patent Office
Prior art keywords
tool
drive
workpiece
tool according
transmission
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.)
Granted
Application number
EP11805185.3A
Other languages
German (de)
English (en)
Other versions
EP2637810B1 (fr
Inventor
Diego CASTRO MENÉNDEZ-CASTANEDO
Juan Ignacio LÓPEZ MARTINEZ
Iván José PRESA LOPEZ
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.)
PMG Asturias Powder Metal SA
Original Assignee
PMG Asturias Powder Metal SA
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 PMG Asturias Powder Metal SA filed Critical PMG Asturias Powder Metal SA
Publication of EP2637810A2 publication Critical patent/EP2637810A2/fr
Application granted granted Critical
Publication of EP2637810B1 publication Critical patent/EP2637810B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B21J13/025—Dies with parts moving along auxiliary lateral directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth

Definitions

  • the invention relates to a tool for machining a workpiece, in particular a metallic workpiece.
  • WO 2010/075600 A1 discloses a method for forming deposits on the internal toothing of a sliding sleeve produced by powder metallurgy
  • EP 2 060 346 A2 discloses a tool for compacting a sintered component or compacting a powder for the sintered component to be produced.
  • the tool has a variable with respect to its radial dimensions
  • Compression element by means of which a sintered component in the form of a simple ring or the toothing of a sintered component or a sintered powder is compressed.
  • the invention has for its object to provide a tool with which a workpiece can be processed inexpensively and at the same time dimensionally stable. This object is achieved by the combination of features of claim 1.
  • a tool element is provided, which easily along a working direction on a provided surface of a
  • Workpiece is moved to.
  • the movement in the working direction is not about rotational, but at least substantially translational, so that with little effort a good efficiency in editing the
  • the tool is suitable for machining different workpieces. It is generally suitable for metallic workpieces, in particular for powder metallurgically produced workpieces or components.
  • the tool is preferably used for the molding of provided surfaces of one of the above workpieces, e.g. also for the molding of already compacted sintered components or non-compressible components made of solid material.
  • the tool points between the tool element and the
  • Drive element on a transmission element for power transmission between the drive element and the tool element.
  • the drive element is driven by a specific device to provide the necessary forces and motions during the process implementation. Since the drive element does not act directly on the tool element, can a finer power transmission and thus a finer adjustment of the
  • Tool element as a molded element on a contact surface with a shape relief.
  • the mold element is moved in the working direction on the provided workpiece surface to form there the surface relief.
  • the tool element can be structurally modified such that the tool for compacting a sintered component or a
  • Sintered powder can be used.
  • claims 3 and 4 allow easy adaptation of the mold element to differently sized annular workpieces, such as gears or sliding sleeves for the automotive sector.
  • the mold element before the Shapes are brought into its defined working position, so that there is no danger of unwanted contact between the shape relief of the mold element and the workpiece surface before molding.
  • the molding element has at least one slot or a plurality of particularly evenly distributed slots, whereby a radially variable extension of the molding element is technically easy to implement.
  • the slots are unevenly distributed. This can be advantageous when machining workpieces with specific geometries.
  • the mold element may be formed integrally or consisting of several segments.
  • the shaping of the surface relief on individual or all teeth of the internal or external teeth of a workpiece so that the final geometry can be made particularly cost effective and accurate.
  • a preferred application of the method is therefore the production of gears, sliding sleeves, synchronizer rings and coupling bodies for the automotive industry, in particular for manual transmissions of motor vehicles.
  • a desired surface relief can be produced inexpensively on a toothing of a sliding sleeve.
  • Recesses can be formed on the teeth of the toothing, that is, on the teeth material is displaced by molding.
  • the recesses can be beneficial Form deposits, stops or stop teeth or locking grooves on teeth of the toothing. Conventionally, such surface reliefs as deposits, locking grooves or stop teeth on the teeth of the
  • the surface reliefs may e.g. Have deposits and / or locking grooves and / or stop teeth. Conventionally, a tooth must have several processing steps
  • a deposit and a detent groove i.
  • the trained according to claim 14 transmission element allows transverse to the direction several points for controlling the movement of the
  • the shaped element can be made even more stable in an active working position for shaping and in an inactive rest position
  • FIG. 1 is a sectional schematic side view of the tool in a first embodiment
  • FIG. 2 is a sectional schematic side view of the tool in a further embodiment
  • 3 is a perspective view of the feature in a first embodiment
  • FIG. 4 shows a sectional side view of the element according to FIG. 3
  • FIG. 5A, 5B shows partial perspective views of two form elements with different shape reliefs for forming the internal toothing of a sliding sleeve
  • FIG. 6 is a partial perspective view of a sliding sleeve with an internal toothing provided for the molding, before the molding process, Fig. 7A, 7B, 7C partial perspective views of sliding sleeves with different surface reliefs on the internal teeth after molding,
  • 8A, 8B is a perspective view of a tooth of
  • FIG. 9 is a partial cross-sectional view of a molded element for forming the surface relief on the tooth of FIG. 8B; FIG.
  • 10A, 10B is a perspective view of a tooth of
  • 11 is a partial cross section of a mold element for molding the
  • 12A, 12B is a perspective view of a tooth of
  • FIGS. 12C, 12D are perspective views of teeth of the teeth
  • 14A, 14B is a perspective view of a tooth of the internal toothing of a sliding sleeve, before and after forming a further embodiment of the surface relief,
  • Fig. 15 is a partial cross section of a mold element for molding the
  • Fig. 16 is a sectional side view of a drive device for the
  • Fig. 17 is a sectional side view of the drive device and the
  • the mold 1 according to FIG. 1 has a transmission element 2 and a shaped element 3.
  • the transmission element 2 includes a first transmission element part 2a and a second transmission element part 2b. Both transmission element parts 2a and 2b are arranged in the axial direction 16 of the tool 1, that is, along a central longitudinal axis 17 of the tool 1, at a distance from each other.
  • the form element 3 is variable with respect to its radial extent in the radial direction 18.
  • individual or all transmission element parts 2a, 2b are motion-controlled in the radial direction 18. This motion control is done by means of a associated, in Fig. 1 only schematically illustrated drive element 19a, 19b.
  • the mold element 3 carries a contact surface 5 with a shape relief 20, which is to act on a provided radially inner surface 21 of the annular workpiece 4 for forming in the working direction 22.
  • the working direction 22 extends substantially in the radial direction 18 of the
  • the mold relief 20 is formed non-complementary with respect to the inner surface 21 to be formed.
  • the mold element 3 is moved by means of the drive element 19 and the transmission element 2 in the direction of its radially largest extent (FIG. 1).
  • Transmission element 2 moves in the direction of its smallest radial extent (Fig. 2).
  • the drive element 19 is driven transversely to the working direction 22 along a drive direction 24.
  • the drive direction 24 extends parallel to the axial direction 16.
  • mutually corresponding or cooperating surfaces of the drive element 19, the Ü transmission element 2 and the molded element 3 ensure the necessary power transmission to the mold element 3, so that this in its different positions before, during and after molding can be transferred without causing unwanted mechanical contacts between the mold element 3 and its shape relief 20 comes with the workpiece 4.
  • the drive element 19 has a drive surface 25a, 25b which extends at an acute angle to the drive direction 24.
  • Drive surface 25a cooperates with a complementary transfer surface 26a of the transfer element 2a.
  • the transmission element 2 is arranged between the drive element 19 and the mold element 3.
  • the transmission element 2a or 2b has a second transmission surface 6a or 6b, which cooperates with a complementary contact surface 7a or 7b of the mold element 3.
  • the second transmission surfaces 6a, 6b and the contact surfaces 7a, 7b extend parallel to the drive direction 24 or in the axial direction 16.
  • At least one transmission element part 2a, 2b and / or the form element 3 are preferably also movable in the axial direction 16.
  • the mold element 3 is preferably formed substantially annular or hollow cylindrical, which is best seen in Fig. 3 and Fig. 4. Along its circumferential direction, a plurality of slots 8 may be provided. They allow a simple radially variable
  • the mold element 3 can to some extent in the radial direction 18 "open” (radial magnification) and “closed” (radial reduction) are.
  • the provided with slots 8 form element 3 according to FIGS. 5A and 5B is suitable for the realization of radially inner end geometries on an inner surface 21 of the workpiece 4.
  • the mold element 3 according to FIG. 3 and FIG. 4 is suitable for forming a radially outer surface 23 of a workpiece 4.
  • the slots 8 are aligned in the radial direction 18, they do not extend in the axial direction 16 over the entire length of the mold element third
  • the provided surface of the workpiece 4 is the not yet formed internal toothing 11 of a sliding sleeve 10 (FIG. 6).
  • the end geometry to be formed or the surface relief of the internal toothing 11 to be formed are defined by the shape relief 20 of the shaped element 3 (FIGS. 5A, 5B).
  • the internal toothing 11 to be machined by molding can assume different end geometries:
  • the internal toothing 11 or individual teeth 27 thereof can, after shaping, be formed e.g. have the geometry and function of deposits 12 ( Figures 7A, 8B, 10B), stop teeth 13 ( Figures 7B, 14B) or detent grooves 14 ( Figures 7C, 12B, 12C, 12D).
  • FIG. 8B shows a first variant of a deposit 12 produced by molding on a tooth 27.
  • the geometry of this deposit 12 essentially corresponds to the variant according to FIG. 7A.
  • a form element 3 which can be used to form this deposit 12 is shown in FIG. 9 in the working position which effects the forming.
  • FIG. 10B shows another variant of a deposit 12 made by molding on a tooth 27 shown.
  • Shaping element 3 is shown in Fig. 1 1 in the shaping effecting working position.
  • FIGS. 12B, 12C and 12D each show a variant of a locking groove 14 produced by molding on a tooth 27.
  • a molding element 3 that can be used in principle for forming these locking grooves 14 is shown in FIG. 13 in the working position that effects the molding.
  • the nub-like geometry of the mold relief 20 for forming the locking groove 14 is in each case adapted to the geometric variant of the locking groove 14.
  • FIGS. 12B, 12C and 12D can be seen that the surface relief of the tooth 27 has both a deposit 12 and a latching groove 14. This surface relief can be formed by means of a single mold element 3.
  • a plurality of, in particular two, shaped elements 3 with different shape relief 20 can be used in succession, in order to form the entire surface relief (deposit 12 and latching groove 14) on the tooth 27.
  • a so-called stop tooth 13 is shown as a surface relief on a tooth 27.
  • a form element 3 which can be used to form this stop tooth 13 is shown in FIG. 15 in the working position which effects the shaping.
  • the mold elements 3 according to FIG. 9, 11, 13, 15 can in principle the
  • the drive element 19 or its parts 19a, 19b and the tool 1 can be seen as components of a drive device 15.
  • the drive device 15 may be configured differently and allows the transmission of the necessary forces to control the movement of the mold element 3.
  • the structural design of the drive device 15 ensures that the mold element 3 can be transferred without unwanted contacting between its shape relief 20 and its contact surface 5 with the workpiece 4 in the desired position.
  • the transmission element 2 or parts 2a, 2b thereof and / or the mold element 3 can be moved in the axial direction 16 during the process execution.
  • the mold element 3 is also transferred axially into the required position. Thereafter, the drive device 15 controls the transmission element 2a such that the latter increases the radial extent of the mold element 3 in order to perform the shaping in a working position.
  • the mold element 3 is also axially in the required position transferred. Thereafter, the drive device 15 controls the transfer element 2a and / or 2b such that the latter reduces the radial extent of the mold element 3 in order to perform the shaping in a working position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

Outil (1) pour l'usinage d'une pièce (4), qui comporte un élément d'outil (3) mobile dans la direction de travail (22) et destiné à agir sur une surface (21) de la pièce (4). Un élément d'entraînement (19, 19a, 19b) pouvant être entraîné transversalement à la direction de travail (22) de l'élément d'outil (3), dans la direction d'entraînement (24) entre en interaction avec l'élément d'outil (3) en vue d'une transmission de force. Un élément de transmission (2, 2a, 2b) destiné à transmettre la force entre l'élément d'entraînement (19, 19a, 19b) et l'élément d'outil (3) est placé entre l'élément d'outil (3) et l'élément d'entraînement (19, 19a, 19b).
EP11805185.3A 2010-11-12 2011-11-11 Outil pour l'usinage d'une pièce Active EP2637810B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT6972010 2010-11-12
PCT/IB2011/002867 WO2012063125A2 (fr) 2010-11-12 2011-11-11 Outil pour l'usinage d'une pièce

Publications (2)

Publication Number Publication Date
EP2637810A2 true EP2637810A2 (fr) 2013-09-18
EP2637810B1 EP2637810B1 (fr) 2017-08-02

Family

ID=45446101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11805185.3A Active EP2637810B1 (fr) 2010-11-12 2011-11-11 Outil pour l'usinage d'une pièce

Country Status (3)

Country Link
EP (1) EP2637810B1 (fr)
CN (1) CN103260789B (fr)
WO (1) WO2012063125A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106180507B (zh) * 2016-07-28 2018-06-19 江苏太平洋精锻科技股份有限公司 薄壁筒内壁第二道径向内环成形工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH428631A (de) * 1964-01-16 1967-01-31 Smeralovy Z Narodni Podnik Verfahren und Einrichtung zur Herstellung von Präzisionsprofilstangen durch Radialpressen eines Drahtes
DE2212512C2 (de) * 1972-03-15 1974-11-14 Praga - Automobilove Zavody, N.P., Prag Nachverformung von Innen-Verzahnungen zum Erstellen von Sperrverzahnungen
US3803896A (en) * 1972-05-19 1974-04-16 Automobilove Zavody Np Method and apparatus for forming locking surfaces on gear rings
DE2517039C3 (de) * 1975-04-17 1979-03-08 Vsesojuznyj Nautschno-Issledovatelskij Instrumentalnij Institut Ssr, Moskau Gesenk zum radialen Schmieden
JP2706927B2 (ja) * 1989-01-27 1998-01-28 三菱自動車工業株式会社 カム型による加工装置
JP2577170Y2 (ja) * 1992-06-18 1998-07-23 大岡技研株式会社 ヘリカル歯車の成形装置
DE19523689C2 (de) * 1995-07-05 1998-03-19 Plettac Umformtechnik Gmbh & C Verfahren zum Kalibrieren von Werkstücken mit einer profilierten Außenkontur
JP4996256B2 (ja) * 2003-12-04 2012-08-08 ビショップ イノヴェーション リミテッド ステアリングラックの金型装置および製造方法
AT505947B1 (de) * 2007-11-14 2016-04-15 Miba Sinter Austria Gmbh Verdichtungswerkzeug
AT507738B1 (de) 2008-12-16 2011-03-15 Miba Sinter Austria Gmbh Verfahren zur hinterlegung der innenverzahnung einer pulvermetallurgisch hergestellten schiebemuffe für ein schaltgetriebe

Non-Patent Citations (1)

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Title
See references of WO2012063125A2 *

Also Published As

Publication number Publication date
EP2637810B1 (fr) 2017-08-02
WO2012063125A3 (fr) 2012-07-19
WO2012063125A2 (fr) 2012-05-18
CN103260789B (zh) 2016-07-13
CN103260789A (zh) 2013-08-21

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