WO2006053854A1 - Dispositif et procede pour tailler une denture sur des pieces, notamment un crantage a dents de loup - Google Patents

Dispositif et procede pour tailler une denture sur des pieces, notamment un crantage a dents de loup Download PDF

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Publication number
WO2006053854A1
WO2006053854A1 PCT/EP2005/055900 EP2005055900W WO2006053854A1 WO 2006053854 A1 WO2006053854 A1 WO 2006053854A1 EP 2005055900 W EP2005055900 W EP 2005055900W WO 2006053854 A1 WO2006053854 A1 WO 2006053854A1
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WO
WIPO (PCT)
Prior art keywords
workpiece
axis
tool spindle
toothing
tool
Prior art date
Application number
PCT/EP2005/055900
Other languages
German (de)
English (en)
Inventor
Martin Strauch
Wolfgang Heinemann
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 EP05811047A priority Critical patent/EP1817131A1/fr
Publication of WO2006053854A1 publication Critical patent/WO2006053854A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F15/00—Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00
    • B23F15/06—Making gear teeth on the front surface of wheels, e.g. for clutches or couplings with toothed faces

Definitions

  • the invention relates to a device for toothing workpieces with a tool spindle and a workpiece spindle, which are rotationally driven in a fixed rotational speed ratio and whose axes have a center distance, wherein the tool spindle carries at least one cutter head which has a cutting tool and which bears on the tool head Workpiece is deliverable and during the machining of the workpiece in a feed direction is continuously displaceable, wherein the feed direction has a running in the Achsab- direction radial component.
  • the invention further relates to a method for cutting workpieces having the features:
  • a workpiece to be toothed is rotationally driven by a workpiece spindle about a workpiece spindle axis;
  • a cutter head having at least one beater blade is rotationally driven by a tool spindle about a tool spindle axis
  • the tool spindle and the workpiece spindle run in a fixed speed ratio to each other;
  • the tool spindle axis and the workpiece spindle axis have an axial distance from each other;
  • the feed has a radial component in the direction of the axial distance.
  • a device and a method are known from DE 2650 955 C1, in which a beater knife carried by a knife head dips into a rotating workpiece.
  • the tool spindle axis can be adjusted about an inclination axis to influence the cross-sectional profile of the groove produced.
  • the feed takes place here parallel to the extension direction of the workpiece axis.
  • the invention has the object of developing the generic method or the generic device to the effect that even teeth with flank profiles, which have a component in the radial direction, get tooth flanks, which run essentially flat.
  • the claim 2 provides, first and foremost, that in the process during the feed, the inclination angle of the tool spindle axis about a tilting axis extending essentially parallel to the workpiece spindle axis is changed along with the changing center distance.
  • face gears such as, for example, serrations or also conically running toothings can be achieved with flanks which run towards the center of the workpiece.
  • the change in the inclination angle takes place in accordance with a predetermined function of the axial spacing.
  • the direction of the change in the angle of inclination corresponds to the direction of rotation of the workpiece spindle as the center distance increases.
  • the inclination angle is changed such that the cutting direction of the workpiece relative to the cutting direction taking place at different radial spacings are substantially parallel to one another.
  • the workpiece spindle axis lies in the Z-axis.
  • the radial direction then corresponds to the X-axis.
  • the tool spindle axis lies essentially in the Y axis and in the X direction offset from the Z axis.
  • the offset in the X direction is the radial distance.
  • the feed has at least one component in the direction of the X-axis.
  • the variation of the tilt angle occurs within the XY plane.
  • the tool axis can have both negative and positive tilt angles with respect to the Y-axis.
  • the feed is preferably carried out in the direction away from the Z axis, ie toward increasing radial distances along the X axis, while the deepest point of engagement of the flywheel on a Z-axis intersecting radial line.
  • the pivot axis is preferably not only substantially parallel to the Z-axis, but also in the circulation plane of the flywheel with respect to the cutter head.
  • the cutter head can have a plurality of striking blades which are equally spaced in the circumferential direction and located in a common plane. With the invention plan flanks can be achieved with high accuracy.
  • Fig. 1 is a schematic representation of the geometric arrangement of
  • FIG. 2 is a plan view of the arrangement shown in Fig. 1 in the Y direction
  • FIG. 3 is a section along the line III-III in Fig. 2, looking X-
  • FIG. 5 shows a schematic illustration which is greatly distorted for clarity in different feed positions of successively produced individual sections 10 on a workpiece end face in the reference system of the workpiece, wherein the inclination angle ⁇ of the tool axis has remained unchanged;
  • FIG. 6 is a view according to FIG. 5, but with the inclination angle ⁇ changed in the course of increasing the axial distance R,
  • FIG. 7 shows an illustration approximately according to FIG. 4 for clarifying the change in the cutting direction 5 1 of the flywheel 5 in the machine-fixed reference system as a function of the axial distance R, FIG.
  • FIG. 8 shows an illustration according to FIG. 2 of a second exemplary embodiment of the method for producing a serration
  • FIG. 9 shows a third embodiment in a representation according to FIG. 2 for producing a serration
  • FIG. 10 is a view according to FIG. 2 of a fourth embodiment for producing a conical circumferential toothing
  • FIG. 11 shows a representation according to FIG. 7, wherein the feed also has a movement component in the Y direction.
  • FIG. 1 shows a workpiece 1, which is driven in rotation in the direction of the circumferential axis shown there around a workpiece spindle axis 2.
  • the drive motor and the work piece 1 receiving the workpiece spindle are not shown for the sake of clarity.
  • the end face of the tool 1 is to be provided with a serration, this consists of radially extending star-shaped teeth.
  • the tooth gaps are to be produced in the machining process.
  • This purpose is served by the cutter head, which is designated by the reference number 3 and which is shown as a cylindrical body for the sake of simplicity, which is rotated about a tool spindle axis 4.
  • the tool spindle and the tool spindle motor are also not shown here for the sake of clarity.
  • the illustration shows that the flywheel blades 5, which are assigned to the cutter head 3 in a uniform circumferential distribution, lie in a common plane. This plane passes through the inclination axis 12, designated by the reference numeral 12, about which the tool spindle axis 4 is pivotable in the direction - ⁇ or + ⁇ in the XY plane.
  • the inclination axis 12 runs parallel to the Z axis of the machine-fixed reference system forming the workpiece spindle axis.
  • the tool spindle axis 4 is roughly in the direction of the Y axis.
  • the delivery of the cutter head 3 with respect to the workpiece 1 takes place in the direction of the Z axis and is denoted by S.
  • the feed takes place in a direction transverse to the Z axis, namely in the X direction and is denoted by R. With R, the respective distance of the lowest point of engagement of the flywheel 5 is designated by the workpiece spindle axis 2.
  • the feed takes place away from the workpiece spindle axis, so that the radial distance R increases during the feed.
  • the inclination angle ⁇ of the tool spindle axis 4 varies within the XY plane.
  • the inclination angle ⁇ preferably changes only in one direction, namely in the direction of rotation of the workpiece 1. The change takes place continuously.
  • the reference numeral 9 represents an auxiliary line which runs parallel to the groove bottom 7.
  • the drawn auxiliary line serves to clarify the technical effect of an embodiment of the method and in particular the technical success of the pivoting in the course of the radial feed, since the flanks of the teeth become wider as the radius increases.
  • the auxiliary lines indicate the course of grooves milled with the method when the feed path is so small that the surface of the workpiece is only scratched with the flywheel knives.
  • the time at which the beater blade 5 dives through the plane defined by the auxiliary line 9 is denoted by h.
  • the time at which the cutting blade 5 reaches its greatest depth of immersion into the workpiece 1 is denoted by t 2 at t 2 and the time at which the beater 5 passes the plane defined by the auxiliary line 9 in the direction of exchange.
  • the angle of inclination ⁇ were constant over the entire feed rate V, ie at each axial distance R, then the immersion time h and the dipping time t3 would correspond to the same rotation angle O) 1 or GQ 3 of the workpiece 1 independently of the radial distance R it roughly in Fig. 5 simplified and with an exaggerated large distance between O) 1 , 0) 2 and 0) 3 and the auxiliary lines 9 is shown. From Fig.
  • FIG. 4 shows how the inclination angle ⁇ changes as the radial distance R increases.
  • the tool spindle axis 4 is inclined by an angle ⁇ l in the counterclockwise direction to the Y-axis.
  • the angle of inclination ⁇ changes in a clockwise direction with increasing radial distance R. It is equal to zero here only as an example for the radial distance R2.
  • the inclination angle ⁇ has only positive values.
  • the tool spindle axis 4 is inclined clockwise by the angle ⁇ 3 relative to the Y-axis.
  • FIG. 6 The accompanying individual sections 10 between the auxiliary lines 9 are shown in FIG. 6.
  • the representations correspond to low tool deliveries, so that only a small amount is worked into the material surface with the tip of the flywheel knife.
  • the cutting directions 11 of the individual sections run there substantially parallel to one another.
  • the immersion points h and the points of exchange t lie on parallel lines, namely the auxiliary lines 9.
  • Fig. 7 shows that the path 5 1 of the cutting tip of a flywheel 5 in the radial positions Rl and R3 is inclined to the XZ plane.
  • the flywheel in the radial position Rl not in the Drehwin- kel ein ⁇ l, but in an offset by ⁇ rotational position in the of Auxiliary line 9 dips defined plane and emerges in an offset by ⁇ in the opposite direction rotational position relative to ⁇ from this plane.
  • the beater blade 5 dips into and out of angular positions offset by a quantity ⁇ in the opposite direction, so that the cutting lengths of the individual slices 10 are essentially of equal length.
  • an obliquely extending ridge cloth 8 forms. If the feed motion V is superimposed on a movement direction in the -Z direction, as shown in FIG. 8, the groove bottom 7 1 receives a corresponding inclination to the transverse direction to the workpiece spindle axis 2.
  • the corresponding ridge line 8 1 can be selected with appropriate selection of the Feed in Z direction then run exactly in the transverse direction to the workpiece spindle axis 2.
  • the spur-toothed gear produced by the method according to FIG. 8 has a complementary toothing, to the end-toothed gear manufactured by the method illustrated in FIG. If these two gears 1, V are placed against each other, the tooth flanks lie flat against each other, so that a torque transmission is possible.
  • the movement component in the -Z direction of the feed V can also be selected such that both the groove base 7 "and the ridge line 8" run at the same angle to the transverse direction to the workpiece spindle axis 2.
  • the front-toothed gears thus produced are then complementary to one another.
  • the auxiliary lines 9 1 , 9 " for which the conditions according to FIG. 6 apply, extend parallel to the groove 7 ', 7".
  • the feed V has only a small radial component R.
  • an auxiliary line 9 '" runs parallel to the groove bottom 7", so that the conditions shown in FIG. 6 apply.
  • the feed from radially outward to radially inward takes place here, that is, toward the workpiece spindle 2.
  • the pivoting direction of the cutter head 3 about the inclination axis 12 must be adjusted accordingly.
  • the swivel angle ⁇ is changed in such a way with the changing axial distance R, that each change of the axial distance also corresponds to a change of the swivel angle.
  • the functional relationship R of ⁇ may also be more complicated. Mathematically, this relationship can be represented by a superposition of higher-order polynomials. The functional relationship can be determined by model calculations or by experiments.
  • the diameter of the tool ie the circle diameter of the cutting edge
  • the diameter of the tool is preferably larger than the diameter of the workpiece to be toothed.
  • the individual sections may be significantly longer than shown in the rough schematic representations.
  • the rotational speed or the inclination ⁇ is matched to the radial distance in the workpiece such that the individual sections lie essentially in the alignment position one behind the other. In this case, the individual individual sections often overlap to produce the flattest possible flank.
  • the angles of inclination should preferably be only positive, so that the first cut in a winch kel ⁇ is started equal to zero. Any deviations still present from the ideal flank design can be compensated for by additionally "shifting" the cutter head in the Y direction. The knife head swiveled in the X direction during its displacement is then additionally displaced in the Y direction, so that its path runs inclined to the X axis.

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

Abstract

L'invention concerne un dispositif servant à tailler une denture sur des pièces (1, 1', 1'', 1''') et comprenant une broche porte-outil et une broche porte-pièce qui sont entraînées en rotation l'une par rapport à l'autre selon un rapport de vitesse de rotation fixe et dont les axes (2, 4) présentent un entraxe (R). La broche porte-outil porte au moins un porte-lame (3) qui présente un outil de coupe (5), qui peut être approché de la pièce (1, 1', 1'', 1''') et qui peut être déplacé en continu dans un sens d'avancée (V) pendant l'usinage de la pièce (1, 1', 1'', 1''') par enlèvement de copeaux, le sens d'avancée (V) présentant une composante radiale s'étendant dans la direction d'entraxe (R). Pour générer des crantages à dents de loups, l'axe (4) de la broche porte-outil peut pivoter autour d'un axe d'inclinaison (12) pratiquement parallèle à l'axe (2) de la broche porte-pièce de sorte que son angle d'inclinaison (f) autour de cet axe (12) varie conjointement avec la variation de l'entraxe (R).
PCT/EP2005/055900 2004-11-20 2005-11-11 Dispositif et procede pour tailler une denture sur des pieces, notamment un crantage a dents de loup WO2006053854A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05811047A EP1817131A1 (fr) 2004-11-20 2005-11-11 Dispositif et procede pour tailler une denture sur des pieces, notamment un crantage a dents de loup

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410056171 DE102004056171A1 (de) 2004-11-20 2004-11-20 Vorrichtung und Verfahren zum Verzahnen von Werkstücken, insbesondere mit einer Stirnverzahnung
DE102004056171.0 2004-11-20

Publications (1)

Publication Number Publication Date
WO2006053854A1 true WO2006053854A1 (fr) 2006-05-26

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PCT/EP2005/055900 WO2006053854A1 (fr) 2004-11-20 2005-11-11 Dispositif et procede pour tailler une denture sur des pieces, notamment un crantage a dents de loup

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Country Link
EP (1) EP1817131A1 (fr)
DE (1) DE102004056171A1 (fr)
WO (1) WO2006053854A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012052367A1 (fr) * 2010-10-22 2012-04-26 Sandvik Intellectual Property Ab Fraise pour dent et procédé de fraisage des dents d'éléments d'engrenage à dents

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005006123A1 (de) 2005-02-09 2006-08-10 Wera-Werk Hermann Werner Gmbh & Co. Kg Drehlager für ein drehangetriebenes längliches Werkstück, insbesondere für eine Kurbelwelle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976773A (en) * 1956-03-21 1961-03-28 Wildhaber Ernest Method for form-cutting teeth on non-cylindrical blanks
DE2650955A1 (de) * 1976-11-08 1978-05-11 Werner Fa Hermann Maschine zum gleichzeitigen einfraesen mehrerer nuten in umlaufende werkstuecke
US5791840A (en) * 1993-04-08 1998-08-11 Crown Gear B.V. Method of producing a crown wheel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747611C (de) * 1941-06-28 1944-10-09 Klingelnberg Soehne Ferd Verfahren zur Herstellung von Kegelraedern mit geraden Zaehnen mittels Formfraesers, der in Laengsrichtung der Zaehne vorgeschoben und quer zur Vorschubrichtung um eine Achse pendelnd schwingt

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976773A (en) * 1956-03-21 1961-03-28 Wildhaber Ernest Method for form-cutting teeth on non-cylindrical blanks
DE2650955A1 (de) * 1976-11-08 1978-05-11 Werner Fa Hermann Maschine zum gleichzeitigen einfraesen mehrerer nuten in umlaufende werkstuecke
US5791840A (en) * 1993-04-08 1998-08-11 Crown Gear B.V. Method of producing a crown wheel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012052367A1 (fr) * 2010-10-22 2012-04-26 Sandvik Intellectual Property Ab Fraise pour dent et procédé de fraisage des dents d'éléments d'engrenage à dents
US9352406B2 (en) 2010-10-22 2016-05-31 Sandvik Intellectual Property Ab Tooth milling cutter and method for milling the teeth of toothed gear elements

Also Published As

Publication number Publication date
EP1817131A1 (fr) 2007-08-15
DE102004056171A1 (de) 2006-06-14

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