Method for machining by lathing, and lathe
AssigneeJ.G. Weisser Söhne GmbH & Co. KG
InventorsThorsten Rettich, Jorg Reiner
Life of this patent
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Abstract
A lathe (1) in which the work piece (16) to be lathed with a tool (18) is clamped with the longitudinal axis of the work piece parallel to the rotational axis (29) of the rotating clamping device (15) such that the rotational axis (29) does not intersect the work piece (16), and between two machining steps of the machining process by lathing, a position of the work piece (16) in the clamping device (15) is changed such that surface areas (30, 36) not previously machined are moved into the working area of the tool (18).
Claims31
A method for machining by lathing an elongate workpiece (16) having a longitudinal axis, comprising:
- chucking said workpiece (16) in a fixture (15) and rotating the workplace at a machining speed about an axis of rotation (29), feeding a turning tool (18) which performs the lathing transversely with respect to the axis of rotation (29), with a cutting speed of lathing resulting from the rotation of the workpiece (16) in relation to the turning tool (18), the workpiece (16) is chucked with its longitudinal axis parallel to the axis of rotation (29), but eccentrically and at a radial distance from the axis of rotation (29), in the fixture (15), with the axis of rotation (29) not passing through the workpiece (16), and the turning tool (18) is fed radially from outside transversely with respect to the axis of rotation (29), the workpiece (16) orbiting about the axis of rotation (29) on an imaginary cylinder for forming a non-round profile, and an orbiting speed corresponds to the rotational speed of the workpiece, and, during an orbiting movement about the central axis of rotation (29), the workpiece executes a revolution, and always a same outer face of the workpiece (16) points radially outward during lathing, while the workpiece (16) is then held immovable in relation to the fixture (15).
The method as claimed in claim 17, wherein during roughing, the workpiece (16) is given a shape which lies near to a finished contour.
A lathe (1) for non-round profiles, comprising a fixture (15) driven by a rotary spindle and a tool carrier (23) capable of being fed transversely to an axis of rotation (29) of the rotary spindle and having a turning tool (18), the fixture (15) has a workpiece receptacle (21) arranged eccentrically at a radial distance from the axis of rotation (29) of the rotary spindle, and a synchronizing device is provided, which synchronizes a feed movement of the tool carrier (23) with the rotation of the rotary spindle.
Dependencies are inferred from the claim text.