WO2010058005A1 - Dispositif de taillage de roues à usiner au moyen d’une fraise mère conique - Google Patents

Dispositif de taillage de roues à usiner au moyen d’une fraise mère conique Download PDF

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Publication number
WO2010058005A1
WO2010058005A1 PCT/EP2009/065642 EP2009065642W WO2010058005A1 WO 2010058005 A1 WO2010058005 A1 WO 2010058005A1 EP 2009065642 W EP2009065642 W EP 2009065642W WO 2010058005 A1 WO2010058005 A1 WO 2010058005A1
Authority
WO
WIPO (PCT)
Prior art keywords
hob
spindle axis
axis
line
workpiece spindle
Prior art date
Application number
PCT/EP2009/065642
Other languages
German (de)
English (en)
Inventor
Mario Schulz
Original Assignee
Profilator Gmbh & Co. Kg
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 Profilator Gmbh & Co. Kg filed Critical Profilator Gmbh & Co. Kg
Priority to EP09771729.2A priority Critical patent/EP2370227B1/fr
Publication of WO2010058005A1 publication Critical patent/WO2010058005A1/fr

Links

Classifications

    • 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
    • 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
    • B23F21/18—Taper hobs, e.g. for bevel gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
    • B23F5/20—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by milling
    • B23F5/22—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by milling the tool being a hob for making spur gears

Definitions

  • the invention relates to a device for intermeshing work wheels with a hob, wherein the work gear is rotatably driven by a workpiece spindle about a workpiece spindle axis, wherein the hob of a tool spindle about a tool spindle axis in a predetermined speed ratio to the wheel is driven in rotation and has cutting teeth whose Fräszahnfpune in one in the tool spindle axis lying longitudinal section through the hob on a foot line and their Fräs leopardkONE in the longitudinal section on a head line, with feed means are provided with which the hob relative to the work gear is displaceable, wherein an axial component of the feed in the direction of the workpiece spindle axis and a radial component of the feed substantially transverse thereto in the direction of the workpiece spindle axis.
  • the invention further relates to a method for gear cutting work wheels with a hob, wherein the work gear is rotationally driven by a workpiece spindle about a workpiece spindle axis, wherein the hob is rotationally driven by a tool spindle about a tool spindle axis in a predetermined speed ratio to the wheel and has Fräszahn whose Fräszahnfhabe in a lying in the tool spindle axis longitudinal section through the hob on a foot line and their Fräs leopardkmü in the longitudinal section on a head line, the hob is advanced relative to the wheel, wherein the feed an axial component in the direction of the workpiece spindle axis and a radial component substantially transverse thereto has on the workpiece spindle axis.
  • the invention further relates to a hob for use with a device or in a method according to any one of the preceding Claims or in particular according thereto, wherein the hob has cutting teeth arranged around a rotation axis, whose cutting tooth feet extend in the longitudinal section on a head line.
  • the invention further relates to a method for manufacturing such a hob.
  • a coarsely toothed, but preferably non-toothed, workwheel is provided with a circumferential toothing.
  • the tool axis lies in a z-direction and the workpiece axis in a direction perpendicular to the z-direction x-axis.
  • the two axes are spaced apart in the direction of a y-axis.
  • the delivery takes place via the x-axis, for which purpose either the workpiece or the tool can be displaced relative to the machine bed.
  • a toothing is milled into the outer surface of the work gear.
  • the cutting teeth are arranged in the form of a helical gear around the axis of rotation of the hob along a helical pitch.
  • Hob and gear are driven in a fixed speed ratio, which can be provided along with the feed and a relative change in the chamfer position, when the hob is additionally advanced in the direction of its axis of rotation, ie the shift axis.
  • the hob is additionally advanced in the direction of the workpiece spindle axis.
  • the feed of the hob relative to the work wheel thus contains not only an axial component in the direction of the workpiece spindle axis but also a radial component substantially transversely thereto in the direction of the workpiece spindle axis. It is considered disadvantageous that, with this manufacturing method, the bottoms of the tooth gaps arranged between the teeth also run inclined to the workpiece spindle axis.
  • the tooth gaps lie essentially on a truncated cone lateral surface.
  • the teeth are thus inclined to the Maschinenradachse extending tooth roots.
  • the root circle ie the distance of the base points from the center of the work wheel is different on the two facing away from each other front sides of the wheel. This results in a weakening of the finished gear.
  • the invention has for its object to provide measures by which gears can be manufactured with acute angle to each other inclined tooth flanks, without the disadvantages discussed above.
  • the generic method and the genus in contemporary hob can be made in particular in the form of disc-shaped gears with grademmach Vietnamese and inclined tooth flanks coupling body.
  • the tooth reinforcement achieved thereby is attributed according to the invention to the fact that the foot line extends at an acute angle ⁇ inclined to the head line.
  • the feed receives an additional component in the direction of the shift, with the speeds of the three feed components in such a way on the
  • Inclination angle ⁇ are matched so that the Fräs leopardkmü the engaged each of these teeth has a maximum depth of engagement with the work gear which is the same at each axial position with respect to the x axis. Since the distance of the Fräs leopardköpfe in the axial direction of the hob in the direction of the apex angle of the inclination angle ⁇ is smaller, the distances between the tooth flanks of the teeth of the work gear with increasing feed in the y direction because of the thereby reducing distance between the workpiece spindle axis and tool spindle axis. The result of this is that, as a result, tooth flanks extending at an acute angle are produced on the teeth of the work gear but parallel to the contour axis of the work gear extending foot lines.
  • the tooth height decreases toward the apex of the inclination angle.
  • the foot line is parallel to the axis of rotation of the hob and the head line inclined thereto.
  • the tooth roots or the bottoms of the tooth gaps lying between the teeth lie on an imaginary cylindrical surface in this variant.
  • the tooth heads, so the head surfaces of the teeth lie in this variant on a truncated cone surface, ie on a conical surface.
  • Both the tooth gaps and the tooth heads then run in each conceived cylinder jacket surfaces.
  • the teeth are equally spaced from each other in the axial direction of the hob.
  • the Fräs leopardkÜ be ground until they lie on an imaginary truncated cone surface, wherein the truncated cone angle corresponds to the predetermined inclination angle, which is preferably in a range between 1 ° and 10 °.
  • the angle of inclination is in the range between 3 ° and 5 °.
  • the apparatus used to carry out the method has a machine bed and in a known manner on the machine bed displaceably mounted carrier carriage and spindle drives.
  • the workpiece spindle and the tool spindle are each driven by an electrical driven by a drive.
  • the two individual drives are synchronized by means of an electronic control. They rotate in a fixed speed ratio.
  • the workpiece spindle axis extends substantially transversely to the tool spindle axis.
  • Linear displacement drives are provided for advancing the hobbing tool driven by the tool spindle in the axial direction relative to the workpiece axis, in the radial direction relative to the workpiece axis and in the direction of the tool axis.
  • the control is arranged so that the feed is adapted in the manner described above to the angle of inclination and to the tooth module.
  • Figure 1 is a side view of the spatial arrangement of a hob 10 with respect to a toothed wheel 1 in an xy plane.
  • FIG. 2 shows the spatial arrangement in the xz plane
  • Fig. 3 is a section along the line III - III in Fig. 1;
  • Fig. 4 is a section along the line IV - IV in Fig. 2 and
  • Fig. 5 is a view according to arrow 5 in Fig. 4 on the circumference of a toothed work wheel.
  • a machine tool according to the invention has a machine bed, not shown, two individual electric drives, which are shown functionally in the drawings only by a workpiece spindle axis 7 and a tool spindle axis 18.
  • the individual drives are driven synchronized with an electronic control. The drive takes place in a fixed
  • the spindles have suitable chuck for receiving a gear wheel 1 to be toothed, which is disc-like in the exemplary embodiment, and a hob 10, which has on its outer circumferential surface Wen- del gang-shaped arranged milling teeth 11.
  • the workpiece wheel 1 rotates about a workpiece spindle axis lying in the x-axis.
  • the hob rotates about a tool spindle axis 18 located in the z axis.
  • the workpiece spindle axis 7 is offset in the y direction from the tool spindle axis 18.
  • a hob which has been manufactured as follows, is used.
  • the hob has a rotation axis 18 and in the raw state a running on a cylinder surface 17 outer contour.
  • this construction of the cylinder jacket surface is indicated by the construction head line 17.
  • running teeth 11 are incorporated into the cylinder surface of the blank on a helical pitch line.
  • the cutting teeth have lying in the construction cylinder surface 17 Fräszahnkopf surfaces, obtuse inclined thereto extending Fräszahnflanken 12 and extending in an imaginary cylinder surface tooth space bottoms in which the Fräszahnfoue 14, 24 extend.
  • the gaps between the cutting teeth 11 thus have a substantially V-shaped profile in longitudinal section.
  • the teeth are designed substantially the same, so that they form a foot line 15 and a construction head line 17 in the longitudinal sectional view according to FIG.
  • the heads of the cutting teeth are ground until the Fräs leopardkexcellent 13, 23 extend with their top surfaces in an imaginary truncated cone lateral surface, which is shown in FIG. 3 as a head line 16.
  • the head line 16 intersects the foot line 15 at an acute angle at an angle ⁇ , which can be in a range between 1 ° and 10 °.
  • the angle ⁇ is 4 °. From Figure 3 it can be seen that the rightmost tooth 11, which is arranged facing away from the vertex of the angle ⁇ , the shortest in the axial direction of the head 13 but the longest cutting tooth flanks 12 has. In contrast, the cutting tooth 21 closest to the vertex of the inclination angle ⁇ in FIG. 3 has the shortest cutting tooth flanks 22, but the longest milling head 13. Between two cutting tooth flanks 12, 22, the tooth gap bottom runs on a cylindrical surface.
  • the hob 10 is delivered to the work wheel 1.
  • the feed during milling of the teeth 2 of the work wheel 1 is a superimposed movement in the axial direction (x-axis) in the radial direction (y-axis) and in the direction of the shift axis of the hob 10 (z-direction).
  • the sizes of the feed components are adapted to the module of the teeth 2 and ⁇ to the inclination angle that the Wälzfräszahnkexcellent 13, 23 have a constant maximum depth of penetration into the work 1 substantially.
  • teeth 2 are produced with tooth flanks 3 in which the tooth flanks 3 of a tooth run in planes which intersect at an acute angle.
  • the teeth are thus narrower in the direction of the contour axis 7 of the work wheel 1 and the tooth gaps 4 lying between the teeth 2 wider.
  • FIG. 4 which shows a section through a finished toothed wheel
  • the toothed feet 5 run on contour lines which run parallel to the contour axis 7 of the work wheel 1.
  • the base point 5 1 on the one end face of the work wheel 1 has the same distance from the contour axis 7 of the work wheel 1 as the base point 5 "on the opposite side to the contour axis 7 of the work wheel. 1
  • the tooth flanks 3 extend at an angle of inclination.

Landscapes

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

Abstract

L’invention concerne un dispositif de taillage de roues à usiner (1) au moyen d’une fraise mère (10), la roue à usiner (1) pouvant être entraînée en rotation par une broche porte-pièce autour d’un axe de broche porte-pièce (7). La fraise mère (10) peut être entraînée en rotation par une broche porte-pièce autour d’un axe de broche porte-pièce (18) selon un rapport de vitesse de rotation prédéterminé par rapport à la roue à usiner (1) et présente des dents de fraisage (11, 21), dont les pieds (14, 24) s’étendent sur une ligne de pied (15) dans une section longitudinale de la fraise mère (10) suivant l’axe de broche porte-pièce (18), et dont les têtes (13, 23) s’étendent sur une ligne de tête (16) dans la section longitudinale. Des moyens d’avance permettent le déplacement relatif de la fraise mère (10) par rapport à la roue à usiner (1), une composante axiale de l’avance étant orientée en direction de l’axe de broche porte-outil (7) et une composante radiale de l’avance étant orientée de manière sensiblement perpendiculaire à cette dernière dans la direction de l’axe de broche porte-outil (7). L’invention vise à réaliser des roues dentées présentant des flancs de dent inclinés selon un angle aigu les uns par rapport aux autres. A cet effet, la ligne de tête (16) est inclinée selon un angle aigu (α) par rapport à la ligne de pied (15).
PCT/EP2009/065642 2008-11-24 2009-11-23 Dispositif de taillage de roues à usiner au moyen d’une fraise mère conique WO2010058005A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09771729.2A EP2370227B1 (fr) 2008-11-24 2009-11-23 Dispositif de taillage de roues à usiner au moyen d'une fraise mère conique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008037578.0 2008-11-24
DE200810037578 DE102008037578A1 (de) 2008-11-24 2008-11-24 Vorrichtung und Verzahnen von Werkrädern mit einem konischen Wälzfräser

Publications (1)

Publication Number Publication Date
WO2010058005A1 true WO2010058005A1 (fr) 2010-05-27

Family

ID=41683222

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/065642 WO2010058005A1 (fr) 2008-11-24 2009-11-23 Dispositif de taillage de roues à usiner au moyen d’une fraise mère conique

Country Status (3)

Country Link
EP (1) EP2370227B1 (fr)
DE (1) DE102008037578A1 (fr)
WO (1) WO2010058005A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180281088A1 (en) * 2015-10-15 2018-10-04 Danfoss Power Solutions S.R.L. Rotating machine tool and process for cutting gearwheels with asymmetrical teeth

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009059277A1 (de) * 2009-12-22 2011-06-30 Gebr. Heller Maschinenfabrik GmbH, 72622 Verfahren und Vorrichtung zur vereinfachten Verzahnungsbearbeitung an Zahnrädern
BR112016021302B1 (pt) * 2014-05-29 2022-08-30 Eaton Intelligent Power Limited Aparelho de fresagem de engrenagem e método para produzir uma engrenagem
DE102015106354A1 (de) 2014-12-16 2016-06-16 Profilator Gmbh & Co. Kg Wälzschälverfahren und Schneidwerkzeug zur Erzeugung zumindest teilverrundeter Zahnköpfe
DE102015104310A1 (de) 2015-03-23 2016-09-29 Profilator Gmbh & Co. Kg Verfahren und Vorrichtung zum Verzahnen eines Werkrades mit vermindertem Flankenlinienformfehler
DE102020106910A1 (de) 2020-03-13 2021-09-16 Audi Aktiengesellschaft Verfahren zur Wälzbearbeitung eines Zahnrads

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454135A (en) 1920-10-27 1923-05-08 Illinois Tool Works Hob
DE896907C (de) 1943-07-13 1953-12-14 Ultra Praez Swerk G M B H Stirnkegelradwaelzfraeser
US4722238A (en) 1985-04-19 1988-02-02 Navarro Bernard J Rack and pinion gear
EP0497309A1 (fr) 1991-01-30 1992-08-05 Kyoiku Haguruma Kogyo Kabushiki-Kaisha Outil rotatif pour la génération des roues dentées coniques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE487084C (de) * 1924-10-10 1929-12-16 Nikola Trbojevich Verfahren zur Herstellung von Stirn-, Schrauben- und Schneckenraedern mittels eines kegelfoermigen Fraesers
US3059317A (en) * 1959-07-07 1962-10-23 Illinois Tool Works Spiroid hob
DE10012647B4 (de) * 2000-03-15 2009-09-24 Reishauer Ag Einrichtverfahren für ein Bearbeitungswerkzeug bzw. Werkstück auf einer Verzahnungsmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454135A (en) 1920-10-27 1923-05-08 Illinois Tool Works Hob
DE896907C (de) 1943-07-13 1953-12-14 Ultra Praez Swerk G M B H Stirnkegelradwaelzfraeser
US4722238A (en) 1985-04-19 1988-02-02 Navarro Bernard J Rack and pinion gear
EP0497309A1 (fr) 1991-01-30 1992-08-05 Kyoiku Haguruma Kogyo Kabushiki-Kaisha Outil rotatif pour la génération des roues dentées coniques

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180281088A1 (en) * 2015-10-15 2018-10-04 Danfoss Power Solutions S.R.L. Rotating machine tool and process for cutting gearwheels with asymmetrical teeth
US11338380B2 (en) * 2015-10-15 2022-05-24 Danfoss Power Solutions S.R.L. Rotating machine tool and process for cutting gearwheels with asymmetrical teeth

Also Published As

Publication number Publication date
EP2370227A1 (fr) 2011-10-05
EP2370227B1 (fr) 2014-04-09
DE102008037578A1 (de) 2010-05-27

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