Metal working – Plural diverse manufacturing apparatus including means for... – Common reciprocating support for spaced tools
Patent
1982-03-15
1984-04-24
Briggs, William R.
Metal working
Plural diverse manufacturing apparatus including means for...
Common reciprocating support for spaced tools
B23Q 3157
Patent
active
044439296
ABSTRACT:
A machining center of the type incorporating a spindle for driving tools wherein the spindle is movable rectilinearly along the axis of the spindle for engaging tool holders to move tool holders, and tools secured thereto, into an operative position wherein the tools contact a work piece. The rotational speed of the spindle, as well as its rectilinear motion, is controlled by a programmed numerical control center which also controls the bed upon which the work piece is mounted; the bed is movable, at predetermined rates, in the X, Y and Z directions. A positioning means, such as turret or carousel, is positioned beneath the spindle and is used to hold several tool holders, each of which supports tools for use in the machining operation. The tool holders are temporarily secured in the positioning means and are removed therefrom through the operation of the lowering spindle; the tool holders are formed in three sections, the first of which contacts and is driven by the rotating spindle. The second section of the tool holder is held against rotation by an anti-rotation device which operates through a coupling secured at one end to a vertically movable ram and at the other end to the second section of the tool holder. The tool holder also includes a third section that incorporates a tool holding spindle; the first section and the third section of the tool holder are interconnected by a drive coupling that permits significant variations from the conventional spindle rotational velocity and rectilinear motion. Selected drive couplings are provided for three dimensional angular displacement of the tool holding spindle relative to the rotational axis of the spindle on the machine center. Further selection of the drive coupling in the machine tool permits the simultaneous use of multiple tools, the utilization of multiple tools rotating about an axis perpendicular to the axis of the spindle, and rotational velocities of tools in excess of the rotational velocity of the driving spindle.
REFERENCES:
patent: 421517 (1890-02-01), Richards
patent: 3191260 (1965-06-01), Jorgensen
patent: 3999769 (1976-12-01), Bayer et al.
patent: 4237595 (1980-12-01), Kitamura
patent: 4309809 (1982-01-01), Yokoe et al.
Bayer Jack L.
Breitkopf Walter J.
Briggs William R.
Meier Lawrence
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