A deburring tool including a tool base body defining a blade shaft and a bar blade defining a cutting profile having a main cutting edge and a secondary cutting edge, wherein at least a portion of the main cutting edge and/or the secondary cutting edge is concave or convex, the bar blade is held in the blade shaft, and the deburring tool is configured to deburr a bevel gear.

The invention provides a tool, a method and a machine with which roof ridge-shaped chamfers can be produced on teeth of an internally and externally toothed gearwheel with minimised changeover times during tool set up. For this purpose, a tool according to the invention comprises a tool carrier having a holding section for attachment in a tool holder and a chamfering tool, which is held on the end section of the tool carrier, said end section being associated with the other end face, and during use describes an impact circle with its cutting edge, the diameter of said circle being determined by the radial distance of the cutting edge of the chamfering tool from the axis of rotation of the tool. According to the invention, at least one further chamfering tool is attached in a middle section of the tool carrier which is offset relative to the end section provided with the chamfering tool towards the holding section of the tool carrier. At the same time, the further chamfering tool is held with its cutting edge at a radial distance from the axis of rotation of the tool, which is greater than the radial distance of the cutting edge of the chamfering tool held on the end section of the tool holder. A method according to the invention and a machine according to the invention are based on the use of tools according to the invention.

The present application relates an apparatus for chamfer-machining at least two edges of a toothed workpiece, wherein the apparatus comprises at least one workpiece spindle with a rotatably mounted workpiece holder for receiving the workpiece and a machining head movable relative to the workpiece holder via at least one axis of movement, wherein on the machining head at least one first tool spindle with a first rotatably mounted tool holder is provided for receiving at least one first chamfer milling cutter for chamfer-machining a first edge of a toothing of a workpiece received in the workpiece holder, wherein on the machining head a second tool spindle with a second rotatably mounted tool holder is provided for receiving an end milling cutter for chamfer-machining a second edge of a toothing of a workpiece received in the workpiece holder.

A method for deburring bevel gears using a deburring tool, which comprises at least one cutting edge, having the following steps: rotationally driving the deburring tool around a deburring spindle axis, rotationally driving a bevel gear around a workpiece spindle axis, wherein the rotational driving of the deburring tool and the rotational driving of the bevel gear take place in a coupled manner with an inverse coupling transmission ratio, it is a continuous method for deburring, in which the cutting edge executes a relative flight movement in relation to the bevel gear, the relative flight movement is defined by a hypocycloid, and wherein a burr is removed at least on one tooth edge of a tooth gap in the region of the bevel gear toe and/or the bevel gear heel by a cutting contact of the cutting edge with the tooth edge.

A method wherein a cutting or grinding chamfering tool (25) is guided along the face width of a gear (12, 23, 52) through one tooth slot (8) (e.g. from heel to toe) while it contacts the topland corners (10, 1 1) of the respective concave and convex tooth flanks of adjacent teeth (2, 4). The tool moves to an index position, the gear is indexed to the next tooth slot position and the tool moves through the tooth slot (e.g. from the toe to the heel). The cycle is repeated until all topland corners are chamfered.

A deburring device (50) for deburring bevel gears, having a first deburring spindle (51) for attaching a first deburring tool (60.1), wherein the first deburring spindle (51) is rotationally drivable by means of a drive about a first deburring spindle axis (Q1), wherein the deburring device (50) additionally comprises a second deburring spindle (52) for attaching a second deburring tool (60.2), wherein the second deburring spindle (52) is rotationally drivable by means of a drive about a second deburring spindle axis (Q2), and wherein the first deburring spindle axis (Q1) and the second deburring spindle axis (Q2) extend parallel to one another.

A method for producing gears, wherein in a first step a set of teeth is formed by means of a skiving wheel rotationally driven by a tool spindle in a workpiece gear rotationally driven synchronously thereto by a workpiece spindle, wherein the workpiece spindle and the tool spindle are at an axis intersection angle to each other and the advancement occurs in the tooth-flank extension direction, and wherein in a second step at least some teeth of the set of teeth are machined by means of a tooth-machining tool. A combined tool is used, in the case of which the toothmachining tool and the skiving wheel are fixedly connected to each other. Between the two steps, the combined tool remains connected to the tool spindle and the workpiece gear remains connected to the workpiece spindle. Between the two steps, merely the relative position of the tool spindle in relation to the workpiece spindle and the rotational speed ratio of the two spindles are changed.

The invention relates to a chamfering tool (4) for chamfering workpiece toothings (22), comprising a helical toothing having, for each flight, a plurality of teeth (5) with a geometrically defined cutting edge and having a tooth profile (8, 9; 8, 9) which is designed for single-flank machining in rolling machining engagement with the workpiece toothing and asymmetrical as viewed in the axial section of the tool. The invention further relates to a chamfering system (100), to a gear-cutting machine, and to a method for producing a chamfer on the tooth edges of a tooth flank side of a workpiece toothing.