| 摘要 |
PCT No. PCT/EP87/00102 Sec. 371 Date Dec. 21, 1987 Sec. 102(e) Date Dec. 21, 1987 PCT Filed Feb. 24, 1987 PCT Pub. No. WO87/04959 PCT Pub. Date Aug. 27, 1987.Lathes usually have only two axes of movement for the tool, namely the directions of the displacement of the saddle and cross rest. Since power-driven tools are increasingly being used, especially in NC lathes, in which radial and axial slotting is performed on the workpiece with end mills, for example, there is a need, for example, to vary the width of the slot by slightly shifting the tool in a third direction perpendicular to the first two directions of movement. Precisely in the case of slotting, no continuous adjustment is necessary, as it would be very costly to achieve mechanically. Instead it is sufficient to be able to reach two or three fixedly specified, changeable positions. This can be achieved by an arcuate movement of the tool which will also contain components of the desired third direction of movement, and this can be achieved mechanically either by rotating a part of the tool head or by an eccentrically configured tool socket.
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