Cutting by use of rotating axially moving tool – With control means energized in response to activator... – To control infeed
Patent
1976-02-02
1977-09-27
Shore, Ronald J.
Cutting by use of rotating axially moving tool
With control means energized in response to activator...
To control infeed
408 10, 408129, 408137, B23G 100, B23B 4700
Patent
active
040508358
ABSTRACT:
Apparatus for heavy duty tapping operations includes a compact, lightweight, hydraulic tool unit and a remote hydraulic power unit, with the entire apparatus being designed for portability. The tool unit includes an elongated housing having a high torque, low speed hydraulic motor with internal reduction gearing, for directly driving a spindle supported in the housing for rotation and longitudinal movement. The spindle includes a lead screw coacting with a lead nut mounted at the spindle end of the housing. The spindle is directly driven by the motor drive shaft through a spline drive coupling; and the spindle is fully supported by the lead nut and drive coupling. Reversing and stop control devices control the tapping and retracting limits of movement of the spindle; and the design provides for minimum damage to the tool unit in the event of failure of the reversing or stop control devices. The remote power unit includes a reservoir for hydraulic fluid, a hydraulic pump and electric drive motor, reversing valve, and electric controls for operating the tool unit.
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patent: 3200425 (1965-08-01), Vickers
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patent: 3690782 (1972-09-01), Petroff
AAA Products International Inc.
Briggs William R.
Murphy Peter J.
Shore Ronald J.
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