| 摘要 |
A device is disclosed for programming the terminal portion of the operative stroke of the tool in a machine tool equipped with hydraulic driving means. The stop motion comprises essentially a discharge valve responsive to a control wedge rigid with said tool and adapted to engage a stop member of which the position is determined in succession by the various adjustable studs carried by a rotary barrel. The barrel is simply laid upon a pair of cradle-forming rollers, at least one roller being driven from the means controlling the angular position of said barrel; if desired, a plurality of similar barrels corresponding to different predetermined programmes may be provided.
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