WO2017063730A1 - Procédé d'usinage d'une denture ainsi qu'ensemble, outil d'usinage et machine-outil associés - Google Patents

Procédé d'usinage d'une denture ainsi qu'ensemble, outil d'usinage et machine-outil associés Download PDF

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Publication number
WO2017063730A1
WO2017063730A1 PCT/EP2016/001639 EP2016001639W WO2017063730A1 WO 2017063730 A1 WO2017063730 A1 WO 2017063730A1 EP 2016001639 W EP2016001639 W EP 2016001639W WO 2017063730 A1 WO2017063730 A1 WO 2017063730A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
machining
axis
toothing
tooth
Prior art date
Application number
PCT/EP2016/001639
Other languages
German (de)
English (en)
Inventor
Karl Schäferling
Original Assignee
Gleason-Pfauter Maschinenfabrik 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 Gleason-Pfauter Maschinenfabrik Gmbh filed Critical Gleason-Pfauter Maschinenfabrik Gmbh
Publication of WO2017063730A1 publication Critical patent/WO2017063730A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
    • B23F19/10—Chamfering the end edges of gear teeth
    • B23F19/102—Chamfering the end edges of gear teeth by milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
    • B23F21/12—Milling tools
    • B23F21/16—Hobs

Definitions

  • the invention relates to the field of complementary tooth forming and more particularly to a method for machining a toothing axis rotating around its toothing axis, wherein a secondary ridge formed during chamfering of a toothed edge of the toothing on a tooth flank of the toothing in a region close to the tooth face is produced by a rolling machining engagement with a toothed edge at least for the most part eliminates about a tool axis rotating machining tool, as well as an arrangement suitable for carrying out this method.
  • One way to form the chamfer is a forming process in which, for example, a gear-shaped tool is brought to the tooth axis parallel tool axis in rolling machining engagement with the teeth to be tapped and forms the chamfer by plastic deformation.
  • a gear-shaped tool is brought to the tooth axis parallel tool axis in rolling machining engagement with the teeth to be tapped and forms the chamfer by plastic deformation.
  • plastic deformation Such a method is described for example in EP 1 270 127 A1 and is also referred to as Wälzentgraten.
  • a so-called Sekundmaschinegrat is raised in the edge region of the adjacent tooth flank. If the workpiece is designed for high gear precision and is therefore subjected to a hard / fine machining such as grinding or honing after the hardening process, this secondary burr must also be removed, otherwise it would lead to high wear of the hard machining tool.
  • DE 10 2009 018 405 discloses a tool wheel which is non-rotatably connected to a toothed chamfering wheel which is coaxial therewith and has recesses extending essentially in the circumferential direction on the front side of its teeth and which can lie in the end section on one or more circular arcs or the course of a spiral, when used, rolling occurs in the tooth height direction of the workpiece.
  • the invention has for its object to simplify a method of the type mentioned while maintaining a satisfactory processing quality.
  • machining tool has at least one cutting edge, which is provided by providing a non-zero axis crossing angle between the toothing axis and the tool axis in the machining engagement making the secondary ridge cutting away erosive movement.
  • the Sekundärgrat on the other tooth flank side is at least for the most part eliminated, in particular in the same processing engagement and / or in particular the same machining tool, This allows shorter processing times for the Sekundärgratbe physicallyung.
  • the secondary burr is removed on both sides not only for the most part but also completely, but a removal can already for the most part already sufficient to significantly reduce the stresses on a hardening hard / finish hard / finish tool.
  • no cutting machining takes place in the area of the tooth flank centered with respect to the toothing axis during the machining engagement. In this way, for some hard / finishing processes, e.g. for honing desired Fräsvorschubmark isten remain on the workpiece.
  • the at least one cutting edge is formed by a web on the tool toothing as in a scraping wheel. That is, the web is formed by a recess in the tooth head area transverse to the tooth tip edge, which may be provided in the form of a groove as a Schabrad. In this context, it is also provided that the web is formed by providing a Spiralnutung on the tool. This allows a uniform removal without axial relative movement between the tool and toothing.
  • the ablation of the secondary burr in the direction of the toothing axis takes place from the middle of the toothing to the outside, in particular on both sides.
  • the cutting direction of the cutting edge on one side may also extend from outside to inside in this connection, the removal of the ridge by a plurality of successive cutting machining operations nevertheless takes place from the inside outwards.
  • one / the predetermined tool design has a recess in a central region with respect to the tool axis. This can cause on the one hand that in the central region of the tooth flank no cutting machining takes place, on the other hand it allows in manufacturing technology simple way a separation of the tool in two different area, of which a respective is designed for the Sekundärgratentfernung on each side of the toothing.
  • a spiral groove of differently directed twist is formed with respect to the tool axis of both edge regions, whereby bilateral ablation from the inside to the outside can be realized without interim change of a direction of rotation on the machine axis.
  • the indentation could also result from a hollow hollow in the tooth width direction tool.
  • the toothing is hardened after the secondary deburring and subjected to a fine machining, in particular a honing process. In this way, a high final accuracy of the finished workpiece is ensured.
  • the invention provides an arrangement for machining a toothing with a method according to one of the preceding method aspects, with a particular rotationally driven workpiece spindle for receiving the teeth and a particular rotationally non-rotatable mounting for the machining tool, a non-zero axis cross angle between the workpiece spindle axis and the axis of rotation of the tool storage and a linear positioning axis, via which the center distance of the two axes of rotation is adjustable.
  • the machining tool and its bearing form less an independent machine than an additional machining unit.
  • the machining tool has no further linear machine axes for tool positioning.
  • the value of the non-zero axis crossing angle can be set via a machine axis. This could be an NC machine axis.
  • the axis cross angle is indeed adjustable, but not via an NC machine axis, but by hand, steplessly or with a number of spaced setting values for the axis cross angle.
  • a likewise preferred variant is particularly simple, in which the tool rotation axis is fixed in space and in particular the axis of the axle is fixed.
  • the Achsnchwinkel is preferably greater than 3 °, more preferably greater than 4 °, in particular greater than 5 ° and preferably less than 35 °, more preferably less than 25 °, in particular less than 15 °.
  • the arrangement is integrated in a gear cutting machine designed for producing toothings from blanks. grates, in particular as a particular also a Anfas adopted having separate processing station such that the workpiece spindle is not the Hauptwerk Kunststoffspindel on which the blank is clamped for generating teeth. In this way, during the chamfering / deburring on the main workpiece spindle, a subsequent blank for gear generation can already be set up and the main times are reduced. But other uses of the arrangement with single-spindle or multi-spindle machines are also conceivable.
  • a machine tool in particular Wälzfräsmaschine with an arrangement according to one of the above-mentioned aspects.
  • This machine tool preferably has a tooth changer from a / of the main workpiece spindle on the workpiece spindle (the complementary tooth formation) spanning workpiece changer.
  • the arrangement is also suitable for other machines such as Wälzgorge- or -Schälmaschinen.
  • the machine tool has a controller which controls the machine axes of the machine tool for carrying out a method according to one of the method aspects explained above.
  • the invention provides a suitable for carrying out a method according to one of the above method aspects processing tool under protection, with respect to the tool axis first edge region in the form of a predetermined Schabradgeometrie, a central region deviating from this Schabradgeometrie to avoid a cutting machining engagement shape and the first edge region opposite second edge region, the teeth of which allows the same rolling engagement in the toothing as the predetermined Schabradgeometrie.
  • Such a tool is relatively easy to produce and has webs in the head region of the toothing of the edge regions of the tool, which extend transversely to the tooth tip edge of the machining tool.
  • FIG. 1 shows a side view of functional areas of a chamfering and deburring device
  • FIG. 2 shows the positioning of workpiece and machining tool for secondary deburring at an axis cross angle
  • FIG. 1 shows a side view of functional areas of a chamfering and deburring device
  • FIG. 2 shows the positioning of workpiece and machining tool for secondary deburring at an axis cross angle
  • FIG. 1 shows a side view of functional areas of a chamfering and deburring device
  • FIG. 2 shows the positioning of workpiece and machining tool for secondary deburring at an axis cross angle
  • Fig. 3 shows an illustration of the machining tool for secondary deburring
  • FIG. 4 shows a schematic representation of a hobbing machine with chamfering and deburring station.
  • a gear 2 (schematically without teeth) is shown, which was generated for example by hobbing, at the tooth front edges still has (primary) burrs and is rotationally driven clamped on a spindle, not shown spindle with workpiece spindle axis C4.
  • a known from the prior art Wälzentgratmaschine is arranged, which has two axially spaced Wälzentgratiza W1, W2, the applied under a radial positioning axis X1 contact pressure, the toothed edges of the gear 2 on the upper and lower side plastically transform into a chamfer.
  • the Anfasech 5 also has a machine axis Z1 for axial positioning.
  • the rotation axis C1 of the chamfering device 5 is not driven, the Wälzentgratizer W1 and W2 are driven by the driven by the workpiece spindle drive with spindle axis C4 gear 2. Likewise, however, the rotation axis C1 could also be driven.
  • a device 6 for secondary burr removal which has a toothed machining tool 7 rotatable about an axis C3.
  • the gear 2 and the tool 7 is shown in the direction of the Achsabstandsachse to the axes of rotation C4 and C3, the axis of rotation C3 of the machining tool 7 and a Achsnchwinkel ⁇ , which runs to Verkanschauiges purposes with approx.
  • 25 ° is drawn, but is usually set for processing to lower values, preferably between 5 and 15 °.
  • the setting of the axis cross angle ⁇ could be carried out via the axis of rotation A3 (FIG. 1), but it is also possible to provide a rotational axis C3 which is fixed in space with respect to its orientation.
  • a rotational axis C3 which is fixed in space with respect to its orientation.
  • the machining tool 7 can be brought into and out of machining engagement with the gear 2.
  • the tool 7 has a in Fig. 3 only indicated teeth 17, on the tooth heads webs 18 are formed similar to a scraper wheel transversely to the tooth tip edge. These webs 18 form cutting edges which, due to the axis cross angle ⁇ between the spindle axis C4 and the rotation axis C3, abradingly remove the secondary burrs on the tooth flanks near the toothed end edges of the toothed wheel 2 when the machining tool 7 is in rolling machining engagement with the gear wheel 2.
  • the toothing 17 does not extend over the full width of the tool 7. Rather, a recess is provided in an axially central region M, so that the machining tool 7, although integrally formed in this embodiment, the shape two spaced apart by a spacer gears 7L and 7R assumes. Due to the one-piece production, however, it is easier to ensure in the production of the toothing 17 on the tool 7 that the toothings 17 in the regions 7L and 7R are parts of the same, only interrupted toothing, with which the same rolling engagement is possible.
  • the recess in the central region M ensures that no cutting machining of the tooth flanks of the toothed wheel 2 takes place in the region centered with respect to the width direction of the toothed wheel 2. This allows feed marks from milling to be retained.
  • This non-machining in the center of the gear 2 could also be achieved by the tool 7 being hollow in the tooth width direction (negative crowning), that is to say having a rolling element which is concave in axial section.
  • the webs 18 are of a spiral path 19 offset successively by a number of workpiece teeth.
  • the settings of the directions of twist preferably take place such that the region 7L of the tool 7 causes the secondary burrs from the inside to the outside
  • the machining contact of a web 18 of a subsequent engaged tooth of the toothing 17 is located axially further outward on the toothed wheel 2. Since the swirl of the spiral 19 in the other region 7R of the tool 7 corresponds to the swirl of the spiral 19 in the region 7L is opposite, also takes place on the other side of the gear 2 a Sekundärgratabtrag from the inside out.
  • the latter is provided for example in the usual manner with three linear positioning axes (radially X, axially Z parallel to the workpiece axis C2 and tangential Y), wherein the orientation of the shift axis Y along the Wälzfräsfitachse is provided, and via a rotary machine axis (A) is adjustable (Rotation of the milling head about radial axis X).
  • the shift axis Y could also be a (cross) slide axis.
  • the chamfering tool (station 5) and the secondary deburring work 6 do not work on the machining center of the hob, namely on the workpiece spindle C2 (main workpiece spindle), but on the slave workpiece spindle C4.
  • a workpiece changer WW shown only schematically in FIG. 4 spends blanks on the workpiece spindle C2, workpieces milled from the workpiece spindle C2 onto the sub spindle C4, and chamfered workpieces with eliminated secondary ridge away from the workpiece spindle C4 for removal.
  • the workpiece changer is a three-arm rotary changer as indicated in Fig. 4.
  • a secondary burr raised on the end face of the gear wheel 2 during chamfering although not shown in the figures, can also be eliminated, for example by filing or twisting off.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Processing (AREA)

Abstract

L'invention concerne un procédé d'usinage d'une denture (2) tournant sur son axe de denture (C4), procédé selon lequel on supprime au moins en majeure partie une bavure secondaire créée lors d'un chanfreinage d'une arête frontale de dent de la denture sur un flanc de dent de la denture dans une zone proche de l'arête frontale de dent par un contact d'usinage par développante à l'aide d'un outil d'usinage (7) tournant sur un axe d'outil (C3), l'outil d'usinage comprenant au moins un tranchant qui, au moyen d'un angle de croisement d'axes (∑) différent de zéro entre l'axe de denture et l'axe d'outil lors du contact d'usinage, fait effectuer un déplacement d'enlèvement de matière coupant la bavure secondaire.
PCT/EP2016/001639 2015-10-16 2016-10-04 Procédé d'usinage d'une denture ainsi qu'ensemble, outil d'usinage et machine-outil associés WO2017063730A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015013497.3A DE102015013497A1 (de) 2015-10-16 2015-10-16 Verfahren zum bearbeiten einer verzahnung und anordnung dafür
DE102015013497.3 2015-10-16

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WO2017063730A1 true WO2017063730A1 (fr) 2017-04-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110355569A (zh) * 2018-04-11 2019-10-22 利勃海尔-齿轮技术有限责任公司 用于对工件进行倒棱加工的设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017107999A1 (de) * 2017-04-13 2018-10-18 Klingelnberg Ag Entgratvorrichtung sowie CNC-Verzahnmaschine mit einer solchen Entgratvorrichtung
DE102018126699B4 (de) 2018-10-25 2020-10-15 Volkswagen Aktiengesellschaft Verfahren zur Herstellung von stirnradverzahnten Werkstücken sowie stirnradverzahntes Werkstück

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT199459B (de) * 1956-02-09 1958-09-10 Zd Y Presneho Strojirenstvi Go Schabwerkzeug für die Fertig bearbeitung von Zahnrädern
GB868016A (en) * 1957-09-27 1961-05-17 Daimler Benz Ag Improvements relating to methods of working gear-wheels and other toothed workpieces
DE2016096A1 (de) * 1969-04-03 1972-04-13 Isuzu Motors Ltd., Tokio Fräs verfahren und hierzu verwendbarer Fräser
DE2157619B1 (de) * 1971-11-20 1972-10-12 Carl Hurth, Maschinen und Zahn radfabnk, 8000 München Vorrichtung zum Entgraten oder Brechen der Katen von Zahnradern mit einem zahnradförmigen Schneidwerkzeug
JPS6071117A (ja) * 1983-09-29 1985-04-23 Mitsubishi Heavy Ind Ltd 歯車の歯先面取方法
DE3734653C1 (de) * 1987-10-13 1988-09-08 Hurth Masch Zahnrad Carl Verfahren zum Feinbearbeiten der Zahnflanken von insbesondere gehaerteten Zahnraedern
EP1270127A1 (fr) 2001-06-21 2003-01-02 The Gleason Works Outil de chanfreinage et d'ébavurage des extrémités frontales de dents des roues dentées
WO2005023476A1 (fr) * 2003-09-03 2005-03-17 Profilator Gmbh & Co. Kg Systeme d'ebavurage equipe d'un disque d'ebavurage
EP2066473B1 (fr) 2006-09-20 2010-10-20 FELSOMAT GmbH & Co. KG Ébarbage de cylindres à ébarbage secondaire intégré sans outil de lissage
DE102009018405A1 (de) 2009-04-22 2010-10-28 The Gleason Works Verfahren und Vorrichtung zum Beseitigen eines Sekundärgrates an einem stirnverzahnten Werkstückrad
DE102009019433A1 (de) 2009-04-29 2010-11-04 Gleason-Pfauter Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Bearbeiten der Zahnkanten stirnverzahnter Werkräder
WO2014187561A2 (fr) * 2013-05-22 2014-11-27 Gleason-Pfauter Maschinenfabrik Gmbh Procédé de fabrication et/ou d'usinage d'une denture, et machine à usiner les dentures
WO2015014448A2 (fr) * 2013-07-31 2015-02-05 Gleason-Pfauter Maschinenfabrik Gmbh Procédé d'usinage des arêtes de dents et station d'usinage pour mettre en œuvre ledit procédé

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4538074B2 (ja) * 2009-02-12 2010-09-08 本田技研工業株式会社 歯車加工方法

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT199459B (de) * 1956-02-09 1958-09-10 Zd Y Presneho Strojirenstvi Go Schabwerkzeug für die Fertig bearbeitung von Zahnrädern
GB868016A (en) * 1957-09-27 1961-05-17 Daimler Benz Ag Improvements relating to methods of working gear-wheels and other toothed workpieces
DE2016096A1 (de) * 1969-04-03 1972-04-13 Isuzu Motors Ltd., Tokio Fräs verfahren und hierzu verwendbarer Fräser
DE2157619B1 (de) * 1971-11-20 1972-10-12 Carl Hurth, Maschinen und Zahn radfabnk, 8000 München Vorrichtung zum Entgraten oder Brechen der Katen von Zahnradern mit einem zahnradförmigen Schneidwerkzeug
JPS6071117A (ja) * 1983-09-29 1985-04-23 Mitsubishi Heavy Ind Ltd 歯車の歯先面取方法
DE3734653C1 (de) * 1987-10-13 1988-09-08 Hurth Masch Zahnrad Carl Verfahren zum Feinbearbeiten der Zahnflanken von insbesondere gehaerteten Zahnraedern
EP1270127A1 (fr) 2001-06-21 2003-01-02 The Gleason Works Outil de chanfreinage et d'ébavurage des extrémités frontales de dents des roues dentées
WO2005023476A1 (fr) * 2003-09-03 2005-03-17 Profilator Gmbh & Co. Kg Systeme d'ebavurage equipe d'un disque d'ebavurage
EP2066473B1 (fr) 2006-09-20 2010-10-20 FELSOMAT GmbH & Co. KG Ébarbage de cylindres à ébarbage secondaire intégré sans outil de lissage
DE102009018405A1 (de) 2009-04-22 2010-10-28 The Gleason Works Verfahren und Vorrichtung zum Beseitigen eines Sekundärgrates an einem stirnverzahnten Werkstückrad
DE102009019433A1 (de) 2009-04-29 2010-11-04 Gleason-Pfauter Maschinenfabrik Gmbh Verfahren und Vorrichtung zum Bearbeiten der Zahnkanten stirnverzahnter Werkräder
WO2014187561A2 (fr) * 2013-05-22 2014-11-27 Gleason-Pfauter Maschinenfabrik Gmbh Procédé de fabrication et/ou d'usinage d'une denture, et machine à usiner les dentures
WO2015014448A2 (fr) * 2013-07-31 2015-02-05 Gleason-Pfauter Maschinenfabrik Gmbh Procédé d'usinage des arêtes de dents et station d'usinage pour mettre en œuvre ledit procédé

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110355569A (zh) * 2018-04-11 2019-10-22 利勃海尔-齿轮技术有限责任公司 用于对工件进行倒棱加工的设备
CN110355569B (zh) * 2018-04-11 2023-08-04 利勃海尔-齿轮技术有限责任公司 用于对工件进行倒棱加工的设备

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