EP1455979A1 - Procede et outil servant a la fabrication d'une piece interne d'un joint homocinetique - Google Patents

Procede et outil servant a la fabrication d'une piece interne d'un joint homocinetique

Info

Publication number
EP1455979A1
EP1455979A1 EP02787681A EP02787681A EP1455979A1 EP 1455979 A1 EP1455979 A1 EP 1455979A1 EP 02787681 A EP02787681 A EP 02787681A EP 02787681 A EP02787681 A EP 02787681A EP 1455979 A1 EP1455979 A1 EP 1455979A1
Authority
EP
European Patent Office
Prior art keywords
milling
tool
teeth
roughing
inner joint
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Withdrawn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
EP02787681A
Other languages
German (de)
English (en)
Inventor
Oliver Doerfel
Andreas Franke
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1455979A1 publication Critical patent/EP1455979A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/12—Cutters specially designed for producing particular profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/28—Grooving workpieces
    • B23C3/32—Milling helical grooves, e.g. in making twist-drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2215/00—Details of workpieces
    • B23C2215/08—Automotive parts
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1902—Gang
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/303752—Process
    • Y10T409/303808—Process including infeeding

Definitions

  • the invention relates to a method for producing an inner joint part for a constant-velocity rotary joint with a plurality of circumferentially distributed ball raceways for receiving torque-transmitting balls and a suitable tool for carrying out this method.
  • the invention is based on the object of creating a method by means of which the ball raceways in the inner parts of the joint are introduced with high precision and with considerably less time expenditure than with conventional methods. that can. Furthermore, the invention has for its object to provide a tool for performing this method.
  • Disk milling per se is a known method which has hitherto been used in particular for producing grooves (as described, for example, in DE 295 11 482 U1) or for machining crankshaft bearings (as described, for example, in DE 198 01 862).
  • the main time and thus productivity-determining variable in disc milling is the feed rate v f . It depends on the formula
  • a tool which comprises a disk-shaped milling body with milling teeth attached to the circumferential surface, the quotient of the number of milling teeth and the diameter of the milling body being greater than 0.25 teeth / mm (see claim 2). This enables - as described above - high feed speeds v f of the tool compared to the steering inner part and thus achieve very short machining times.
  • the disc shape milling of the ball raceways of the constant-velocity rotary joint can be a two-stage process, which consists of a roughing and a finishing process step. These two process steps can be combined in a particularly advantageous and time-saving manner if the roughing tool is mounted together with the finish milling tool on the same tool spindle (see claim 3).
  • the process kinematics can be selected so that the machine downtime corresponding to the return stroke of the roughing tool is used for the finishing process. This enables a significant reduction in the cycle time.
  • the number of teeth on the roughing tool and the finishing tool is preferably the same (see claim 4). - Alternatively, a single milling tool can be used, which roughs in the forward stroke and finishes in the return stroke.
  • the ball raceways can be introduced into a previously unprocessed blank.
  • the roughing tool is expediently provided with chip splitter grooves (see claim 5).
  • the chip breaker grooves divide the wide chips into short chip segments, which prevents the chips from jamming in the chip space of the tool.
  • Fig. La an inner joint part of a swivel joint
  • Fig. Lb a blank for producing the inner joint part of Figure la
  • Fig. 3 shows the tool of Figure 2a in a side view.
  • FIG. 1 a shows an inner joint part 1 of a constant-velocity rotary joint, which was produced from an inner joint part blank 1 ′ (FIG. 1 b).
  • the inner joint part 1 has on its outer circumferential surface 2 a plurality of ball raceways 3, in which, in the assembled position of the inner joint part 1 with an outer joint part (not shown in FIG. 1 a), torque-transmitting balls are received.
  • the ball raceways 3 extend essentially in the longitudinal direction of the inner joint part 1; in the example in FIG. 1 a, the ball raceways 3 are arranged parallel to the axis of symmetry 4 of the inner joint part 1; with these geometries, the shape of the raceway is curved.
  • the ball raceway 3 is tilted by an angle of inclination 5 relative to the axis of symmetry 4 of the inner joint part 1 (see FIGS. 2a and 2b).
  • FIG. 2a shows a milling tool 6 for generating the ball raceways 3 on the blank inner joint part 1 'of FIG. 1b.
  • the milling tool 6 comprises two side milling cutters 7, 7 ', a roughing cutter 7 and a finishing cutter 7', which are arranged axially offset from one another by a distance 8 on a rotary spindle 9.
  • the two milling discs 7.7 ' have a diameter of 21.21 '.
  • each side milling cutter 7, 7 ' has a large number of cutting teeth 11, 11' on its peripheral surface 10, 10 '; the cutting contour 12, 12 'is calculated from the shape of the ball race 3 to be produced.
  • helical toothed milling cutters can also be used.
  • the milling teeth 11 of the roughing cutter 7 are provided with chip breaker grooves 13 in order to ensure that the chips are removed from the chip space of the roughing cutter 7 during the roughing process. Since much smaller chips are produced during finishing, no chip dividers are necessary on the milling teeth 11 'of the finishing cutter 7'.
  • roughing cutters 7 and finishing cutters 7 ' are each formed in one piece.
  • Both disc milling cutters 7,7 ' are hard carbide tools (eg with a TiAlN multilayer coating).
  • the inner joint part blank 1 ' consists of a steel material, for example Cf53.
  • the cutting speeds v c for these material combinations are in the range of 300 m / min to 400 m / min, which is common for such tools.
  • both roughing cutters 7 and finishing cutters 7 'each have 26 cutting teeth 11, 11' and both have a diameter d Wz of 80 mm.
  • the rake angle 14 of the milling teeth 11, 11 ' is approximately 10 °.
  • the rotating spindle 9 is tilted by the same angle 5 'with respect to a direction of rotation running perpendicular to the axis of symmetry 4'.
  • the tool 6 is initially guided relative to the blank inner joint part 1 'in such a way that the roughing milling disk 7 forms a groove-shaped groove 15 of depth 16 in the surface of the inner joint part blank 1' (arrows 17 and 17 'in FIGS. 2a and 3). Then the tool 6 is shifted by an offset ⁇ along the spindle axis 9 '(arrow 18 in FIG.
  • ⁇ being the distance 8 between the roughing milling cutter 7 and the finishing milling cutter 7' on the tool spindle 9, so that the finishing cutter 7 'is now opposite the already milled groove 15 comes to rest.
  • the tool 6 is first guided relative to the inner joint part blank 1 'in such a way that the finishing cutter 7' finely processes the area of the groove-shaped groove 15 introduced in the first process step and thereby produces the finished shape of the ball raceway 3 (arrow 19 in FIG. 2b). Finally, the tool 6 is moved back to the starting position by shifting the offset ⁇ in the direction of the spindle axis 9 '(arrow 20 in FIG. 2b).
  • the first ball race 3 is finished, and the inner joint blank 1 'can be rotated by means of the clamping device in order to introduce a further ball race 3 into the outer circumferential surface of the inner joint blank 1'.
  • the two machining steps can also be carried out with a single milling disk, which performs the roughing process and carries out the finishing process in the return stroke.
  • FIGS. 2a and 2b in which one ball raceway is first roughed and finished before the next ball raceway is started, several ball raceways can first be roughed and then successively finished.
  • the tool 6 is displaced during the machining in relation to the workpiece 1 'clamped in the clamping device.
  • the feed movements can also be carried out by the workpiece 1 '. Which of the relative movements of the workpiece 1 'and which of the tool 6 are carried out depends on the machine.
  • both straight and curved ball raceways 3 can be milled into blank inner joint parts 1 '.
  • the milling teeth 11, 11 ' can also have other (for example trapezoidal) cutting contours in order to - instead of of the ball raceways 3 shown in FIG. 1a with an elliptical cross section - to produce ball raceways with a rectangular or trapezoidal cross section.
  • cutter discs 7, 7 'of FIGS. 2a, 2b and 3 cutter discs with individually inserted cutting plates can also be used. This has the advantage that when individual milling teeth 11, 11 'wear, the entire milling disk 7.7' does not have to be replaced, but only the defective cutting insert has to be replaced. In this case, the cutting plates forming the milling teeth 11, 11 'are preferably fastened to the milling disk by brazing or clamping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Selon cette invention, pour former des chemins de roulement à billes sur une surface périphérique extérieure d'une pièce interne d'un joint homocinétique, on utilise une fraise trois tailles (7, 7') présentant un grand nombre de dents (11, 11') par rapport à son diamètre, de manière à atteindre une grande vitesse d'avance.
EP02787681A 2001-12-21 2002-11-14 Procede et outil servant a la fabrication d'une piece interne d'un joint homocinetique Withdrawn EP1455979A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10163040 2001-12-21
DE10163040A DE10163040C1 (de) 2001-12-21 2001-12-21 Werkzeug zum Herstellen eines Gelenkinnenteils für ein Gleichlaufdrehgelenk
PCT/EP2002/012745 WO2003053617A1 (fr) 2001-12-21 2002-11-14 Procede et outil servant a la fabrication d'une piece interne d'un joint homocinetique

Publications (1)

Publication Number Publication Date
EP1455979A1 true EP1455979A1 (fr) 2004-09-15

Family

ID=7710218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02787681A Withdrawn EP1455979A1 (fr) 2001-12-21 2002-11-14 Procede et outil servant a la fabrication d'une piece interne d'un joint homocinetique

Country Status (5)

Country Link
US (1) US20050186036A1 (fr)
EP (1) EP1455979A1 (fr)
DE (1) DE10163040C1 (fr)
PL (1) PL369992A1 (fr)
WO (1) WO2003053617A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004003147B4 (de) * 2004-01-21 2016-01-21 Volkswagen Ag Verfahren und Vorrichtung zum Fräsen von Kugellaufbahnen an Gleichlaufgelenknaben
DE102004008872A1 (de) * 2004-02-18 2005-09-08 Ex-Cell-O Gmbh Verfahren zur Profilherstellung, insbesondere von Profilbahnen für Gelenkteile
DE102005019160B4 (de) * 2005-04-25 2007-04-05 Emag Holding Gmbh Verfahren zur Herstellung von Kugelnaben für Gleichlaufgelenke
DE102007031695A1 (de) * 2007-07-06 2009-01-08 Sandvik Intellectual Property Ab Verfahren zum Fräsen von Kugelbahnen und Scheibenfräser für Kugelbahnen
DE102008044657B4 (de) * 2008-08-28 2023-01-26 Gkn Driveline International Gmbh Gelenkinnenteil für ein Gleichlaufdrehgelenk
DE102011111513A1 (de) 2011-08-31 2013-02-28 Simtek Ag Zerspanungswerkzeug
DE102012220246B3 (de) * 2012-11-07 2014-01-23 Meiko Haertel Ringförmiges Werkzeug zur Bearbeitung eines Werkstücks
EP3187294A1 (fr) * 2015-12-30 2017-07-05 Bomar S.A. w upadlosci ukladowej Procédé de taillage d'engrenage
CN110573282B (zh) * 2016-10-20 2021-07-27 Gkn 动力传动系统有限公司 用于加工内部万向节部件的球道和引导连接部的方法和装置
EP3323541B1 (fr) * 2016-11-21 2019-06-19 Friedrich Gloor AG Tête de fraisage logarithmique améliorée
RS63441B1 (sr) * 2019-03-14 2022-08-31 Meiko Haertel Prstenast alat za obradu radnog predmeta

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US2278738A (en) * 1939-11-13 1942-04-07 Nat Broach & Mach Cutter
CH262857A (fr) * 1945-09-27 1949-07-31 G Goehle Earl Outil tranchant rotatif.
US2858599A (en) * 1956-01-18 1958-11-04 Austenal Inc Milling cutter
US3818562A (en) * 1972-07-19 1974-06-25 Kysor Industrial Corp Cutter body and blade therefor
US3919752A (en) * 1973-06-27 1975-11-18 Gen Motors Corp Milling cutter
US4218159A (en) * 1977-01-07 1980-08-19 Sack Gmbh Multiple-part hobbing cutter
US4470731A (en) * 1981-07-08 1984-09-11 General Electric Company Milling cutter with adjustable finishing insert
AU567376B2 (en) * 1984-03-12 1987-11-19 Gkn Automotive Components Inc. Method of forming a precision balltrack
DE4109109C2 (de) * 1991-03-20 1997-10-02 Partel Robert Säge- oder Fräswerkzeug mit einem blattförmigen Werkkzeugkörper
JPH06155128A (ja) * 1992-11-19 1994-06-03 Hitachi Tool Eng Ltd ラフィングエンドミル
DE29511482U1 (de) * 1994-08-20 1995-08-31 Hartmetall-Werkzeugfabrik Paul Horn GmbH, 72072 Tübingen Verstellbarer Scheibenfräser
DE19607318C3 (de) * 1996-02-27 2002-11-21 Uwe Heisel Fräswerkzeug mit verminderter Lärmemission vorzugsweise zum Formatieren plattenförmiger Bauteile
EP0870562A3 (fr) * 1997-03-24 2000-08-02 Shoda Techtron Corporation Structure de support d'une plaquette de coupe pour outil rotatif
DE29716863U1 (de) * 1997-09-19 1997-12-04 Schuster, Helmut, 86920 Denklingen Frässcheibe
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DE10011113A1 (de) * 2000-03-09 2001-09-13 Komet Stahlhalter Werkzeuge Maschinenwerkzeug mit verstellbarer Schneide
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Title
See references of WO03053617A1 *

Also Published As

Publication number Publication date
US20050186036A1 (en) 2005-08-25
WO2003053617A1 (fr) 2003-07-03
PL369992A1 (en) 2005-05-16
DE10163040C1 (de) 2003-08-21

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