Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1996-09-04
1997-06-17
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
408 10, 408 14, 408137, 470181, B23B 3500, B23G 118
Patent
active
056391919
ABSTRACT:
A short coupled hydraulic tapping apparatus for heavy duty tapping operations including a compact, lightweight, hydraulic tool unit and a remote hydraulic power unit, with the entire apparatus being designed for portability. The tool unit includes a structural base having a slide-mounted high torque, low speed hydraulic motor with internal reduction gearing. The motor is slide mounted for directly driving a lead screw for rotation and longitudinal movement. The lead screw is supported by both the slide-mounted motor and a fixed lead nut. The slide or guideway has a length of travel substantially equal to the length of threads on the lead screw. Reversing and stop control devices control the forward tapping and retracting limits of movement. The design provides a lead screw having an internal bore for coaxially coupling with the motor drive shaft and having an internal coaxial receptacle for replaceably receiving a tapping tool. The remote hydraulic power unit includes a reservoir for hydraulic fluid, an electric motor driven hydraulic pump, a reversing valve and electric controls interconnected with the reversing and stopping control unit for operating the tool unit.
REFERENCES:
patent: 2580061 (1951-12-01), Adams
patent: 2784267 (1957-03-01), Nackenhorst
patent: 3534421 (1970-10-01), Fink
patent: 3690782 (1972-09-01), Petroff
patent: 3838934 (1974-10-01), Petroff
patent: 4050835 (1977-09-01), Womack
AAA Products International, Jiffy Products Division, Bulletin A-124, Revised Aug. 15, 1981.
AAA Products International, Jiffy Products Division, Bulletin A-167, Revised Jun. 1984.
Howell Daniel W.
Montgomery John W.
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