Apparatus and method for chamfering a workpiece having internal gearing
AssigneeLiebherr-Verzahntechnik GmbH
InventorJohannes Weixler
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Abstract
The present disclosure relates to an apparatus for chamfering at least one edge of the gearing at the front side of a workpiece having internal gearing comprising at least one rotatably supported workpiece holder for holding the workpiece and comprising at least one rotatably supported tool holder for holding at least one chamfer hob, possibly a chamfer cut hob, wherein the tool holder is arranged and/or arrangeable next to a workpiece held in the workpiece holder and a chamfer hob held in the tool holder is arrangeable by means of a tool arbor in the region of the center opening of the workpiece formed by the internal gearing to be brought into engagement with an edge of the internal gearing on the upper side and/or on the lower side of the workpiece.
Claims21
An apparatus for chamfering at least one edge of an internal gearing of a workpiece, the workpiece comprising an annular region having at least a first annular front side surface, the first annular front side surface being an upper or lower front side surface, and an inner surface surrounding a center opening of the workpiece, the internal gearing being arranged on the inner surface of the annular region, and the edge extending between the first annular front side surface and the inner surface of the annular region, the apparatus comprising:
- at least one rotatably supported workpiece holder for holding the workpiece,
- at least one rotatably supported tool holder for holding a tool arbor on which at least one chamfer hob is arranged, and
- machine axes for moving the tool holder relative to the workpiece holder, and a controller for automatic control of the machine axes for chamfering the edge of the gearing,
- wherein the controller is configured such that during chamfering machining of the workpiece, the tool holder is arranged relative to the workpiece holder by the machine axes such that the tool holder is arranged at a first position outside of an inner circumference of the workpiece and the tool arbor extends above or below the first annular front side surface of the annular region from the first position to a second position inside of the inner circumference of the workpiece and the chamfer hob is arranged by the tool arbor in the center opening of the workpiece and brought into engagement with the edge of the internal gearing.
An apparatus for chamfering at least one edge of a gearing at a front side of a workpiece having internal gearing comprising:
- at least one rotatably supported workpiece holder for holding the workpiece,
- at least one rotatably supported tool holder for holding at least one chamfer hob,
- machine axes for moving the tool holder relative to the workpiece holder, and
- a controller for automatic control of the machine axes for chamfering edges of the gearing, wherein the controller is configured such that the tool holder is arranged next to the workpiece held in the workpiece holder and the chamfer hob held in the tool holder is arranged during chamfering by a tool arbor in a region of a center opening of the workpiece formed by the internal gearing and brought into engagement with the edge of the internal gearing on at least one out of an upper side and a lower side of the workpiece,
- wherein the rotatably supported workpiece holder is a first rotatably supported workpiece holder, wherein the apparatus comprises a second rotatably supported workpiece holder for holding the workpiece, with the edge of the gearing being chamfer machinable on a first front side of the workpiece while the workpiece is held in the first workpiece holder and an edge on a second front side of the workpiece being chamfer machinable while the workpiece is held in the second workpiece holder.
A method of chamfering at least one edge of an internal gearing of a workpiece,
- the workpiece comprising:
- an annular region having at least a first annular front side surface, the first annular front side surface being an upper or lower front side surface, and
- an inner surface surrounding a center opening of the workpiece, the internal gearing being arranged on the inner surface of the annular region, and the edge extending between the first annular front side surface and the inner surface of the annular region,
- the method using an apparatus comprising:
- at least one rotatably supported workpiece holder for holding the workpiece,
- the chamfering performed by at least one chamfer hob arranged on a tool arbor held in a rotatably supported tool holder,
- the method comprising the step of:
- during chamfering machining of the workpiece, arranging the tool holder relative to the workpiece held in the workpiece holder such that the tool holder is arranged at a first position outside of an inner circumference of the workpiece and the tool arbor extends above or below the first annular front side surface of the annular region from the first position to a second position inside of the inner circumference of the workpiece and the chamfer hob is arranged via the tool arbor in the center opening of the workpiece and brought into engagement with the edge of the internal gearing.
Dependencies are inferred from the claim text.