DE102018004241A1 - Method and device for producing a chamfer on a toothing and / or deburring of teeth - Google Patents

Abstract

Method for machining the tooth edges formed between an end face (3) and the tooth flanks of a toothing (2), in which a machining tool (1) provided with at least one cutting edge separates material from the tooth edges of the toothing (2) to form a chamfer (4) decreases, wherein the machining tool (1) is brought about its axis rotating at a deviating from zero axis cross angle between the axes of rotation of the machining tool and the toothing to be machined (2) in scraping engagement with the toothing to be machined.

Description

The invention relates to a method and a device for producing a chamfer on a toothing and / or deburring of teeth.

From the DE 10 2013 012 797 A1 For example, a method for machining tooth edges and a processing station designed therefor is known.

It is the object of the present invention to shorten the cycle time for the production of chamfers on teeth and / or deburring of teeth. It is also an object of the invention to show a corresponding machine tool. This object is achieved by a method according to claim 1 or 8 and a machine tool according to claim 4. Advantageous developments are the subject of the dependent claims. The machine tool according to the invention or the method for processing the tooth edges formed between an end face and the tooth flanks of a toothing has a machining tool provided with at least one cutting edge which removes material from the tooth edges of the toothing to form a chamfer, the machining tool being about its axis rotating under a deviating from zero axis cross angle between the axes of rotation of the machining tool and the teeth to be machined in scissor engagement with the teeth to be machined is brought. In a further advantageous embodiment, the Achskreuzwinkel is preferably 14 degrees. If necessary, the angular position of the workpieces can be detected with sensors. Because the two tool spindles can be moved independently of one another, machining steps of different lengths can be flexibly divided between the spindles. In this way, the utilization of the individual processing units can be increased and the cycle time is significantly reduced.

• - Schneidendes Verfahren, d.h. die Homogenität des Werkstoffes bleibt gewahrt und zudem entstehen keine Sekundärgrate (Aufwürfe). Außerdem entstehen keine Qualitätsprobleme bei der Hartfeinbearbeitung (Hohnen oder Schleifen
• - Geringer Werkzeugverschleiß durch Aufteilung der Schneidarbeit auf viele Einzelschneiden als im Vergleich zum Fase Wälzschälen.
• - Effizienteres Verfahren, da mehrere Schneiden gleichzeitig wirken, in mehreren Lücken, insbesondere auch in axialer Werkstückrichtung
• - Axial- oder Radialbewegung als Vorschub (Tauchen) möglich
• - Werkstücke mit angrenzender Schulter können angefast werden.
• - Vershiftung des Werkzeuges möglich

Other advantages of the method bevel scraping are:

• - Cutting process, ie the homogeneity of the material is maintained and also no secondary burrs (Aufwürfe). In addition, there are no quality problems in the hard fine machining (honing or grinding
• - Low tool wear by splitting the cutting work on many individual cutting edges than in comparison to bevel skiving.
• - More efficient method, since several cutting edges act simultaneously, in several gaps, especially in the axial direction of the workpiece
• - Axial or radial movement as feed (diving) possible
• - Workpieces with adjacent shoulders can be chamfered.
• - Shaving of the tool possible

As a result, the highest tool life or tool life can be achieved while maintaining maximum machine availability. Thus, a low provision (storage) of the tools is particularly advantageous.

The method according to the invention can be used both for the tooth edge machining of external gears as well as those of internal gears.

• 1 zeigt eine schematische Darstellung der Eingriffsverhältnisse zwischen Bearbeitungswerkzeug und bearbeiteter Verzahnung
• 2 zeigt eine weitere schematische Darstellung der Eingriffsverhältnisse zwischen Bearbeitungswerkzeug und bearbeiteter Verzahnung, wobei der Winkel Gamma ins Werkzeug gelegt ist

Further features, details and advantages of the invention will become apparent from the following description with reference to the accompanying figures.

• 1 shows a schematic representation of the engagement conditions between the machining tool and machined toothing
• 2 shows a further schematic representation of the engagement conditions between machining tool and machined toothing, wherein the angle gamma is placed in the tool

Incidentally, the invention is not limited to the embodiments described in the figure description. Rather, the particular features of the following claims and the foregoing description, alone and in combination, may be essential to the practice of the invention in its various embodiments.

In the DE 10 2013 012 797 A1 The kinematics of the machine axes and the axis cross-angle to the toothing axis of the toothing, whose edges are processed, and definitions are described in more detail.

Our older patent applications DE 1513 ( DE 10 2015 012 908 B3 ) and DE 1408 ( DE 10 2014 010 824 A1 ) describe the in the 1 and 2 shown technology in great detail, which is why a further description is omitted here. In addition, the following claims and the advantages set out above clearly show the present invention.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102013012797 A1 [0002, 0009]
• DE 1513 [0010]
• DE 102015012908 B3 [0010]
• DE 1408 [0010]
• DE 102014010824 A1 [0010]

Claims (8)

Method for machining the tooth edges formed between an end face (3) and the tooth flanks of a toothing (2), in which a machining tool (1) provided with at least one cutting edge separates material from the tooth edges of the toothing (2) to form a chamfer (4) decreases, wherein the machining tool (1) is brought about its axis rotating at a deviating from zero axis cross angle between the axes of rotation of the machining tool and the toothing to be machined (2) in scraping engagement with the toothing to be machined. Method according to Claim 1 , characterized in that the Achskreuzwinkel or angle is preferably 14 degrees. Method according to one of Claims 1 or 2 , characterized in that during the production of the chamfer (4) the tool (1) will move both along the x-direction relative to the workpiece, as well as along the z-direction is relatively moved away from the workpiece. Machine tool for machining between each end face (3) and the tooth flanks of a toothing (2) formed tooth edges with a rotatably driven tool spindle for receiving a workpiece to be machined workpiece, at least one rotatably driven tool spindle for receiving at least one machining tool, wherein a zero deviating achskreuzwinkel between the tool spindle axis and the workpiece spindle axis is adjustable, and a control device is provided which controls the spindle rotations at a non-zero set Achskreuzwinkel to a peel engagement between the teeth to be machined (2) and a toothing of the machining tool (1), in particular the method according to one of Claims 1 or 2 , Machine tool after Claim 4 , with a linear axis serving for the infeed, in particular a first machine axis (X) with a direction component extending radially to the workpiece spindle axis, in particular radially to the workpiece spindle axis. Machine tool after Claim 4 or 5 in which a relative movement between Weerkstückspindel and tool spindle with movement component parallel to the workpiece spindle axis causing machine axis is provided. Machine tool according to one of Claims 4 to 6 in which a non-zero inclination angle of the tool spindle axis relative to an orthogonal to the connecting direction between the centers of teeth and machining tool standing planes is adjustable. Method for operating a device, in particular a machine tool, according to one of Claims 4 to 7 , characterized in that the toothed workpiece (2) is subjected to a scraping process, wherein the rotating about the tool axis, designed with at least one blade for scraping tool (1) slides in a contact zone on the workpiece about the workpiece axis (2), wherein the solder of the contact zone on the workpiece axis defines the z-direction, and wherein a bevel (4) is produced with the tool (1) on the toothed workpiece (2).

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