HARVEY RALPH PLUMMER, III
Pilots at Greenbriar Ave, Fond Du Lac, WI

4648757, Mar 10, 1987

Nov 18, 1982

6/442625

Harvey R. Plummer - Fond du Lac WI

AMCA International Corporation - Fond du Lac WI

B23B 4718

408 12

A system is disclosed for automatic radial adjustment of a boring tool in a machine tool spindle to accurately size a bore in a workpiece within extremely close tolerances over a wide range of bore sizes. The system includes a boring tool mounting a toolholder and cutter and a precision adjusting means for setting the radial position of the cutter, the precision adjusting means including an adjusting wedge housed within said boring bar and being threaded to a precision lead screw which is rotated for axial translation of the adjusting wedge, the wedge and toolholder having intermeshing toothed serrations axially skewed for radial movement of the toolholder in response to axial translation of the adjusting wedge; an adjusting actuator adapted for operative engagement with driver means on said precision lead screw; a probe which measures the size of a preliminary bore in the workpiece; an adjusting control operatively connected to the actuator for altering the radial position of the cutter and toolholder; and means for setting the adjusting control to effect an adjustment in the radial position of the toolholder and cutter by an amount proportional to the deviation between the size of the preliminary bore and the size of the final bore to be generated in the workpiece. The system may be used in any manual or numerically controlled machine capable of performing boring operations.

4054977, Oct 25, 1977

May 3, 1976

5/682464

Harvey R. Plummer - Fond du Lac WI

Giddings & Lewis, Inc. - Fond du Lac WI

B26D 100

407108

A block type cutting tool with insert blades of the throw away type, the block having pockets for mounting the inserts and clamps movable into the pockets for locking the inserts in place. Each insert includes a groove formed centrally thereof and running generally parallel to one of the locating surfaces of the pocket for engaging a tip portion of the associated clamp. The groove is wider than the tip so that locking of the clamp first causes the tip to wedge the insert into the pocket, following which the tip engages the lip of the groove to firmly draw the wedged insert against a locating surface. This arrangement more positively holds the insert against displacement when the tool is withdrawn, provides a perceptible stop indicating the clamp is fully locked, and, in cases where radial insert adjustment is provided, helps to guide the insert to prevent cocking.

4354305, Oct 19, 1982

Nov 15, 1979

6/094545

Harvey R. Plummer - Fond du Lac WI
William E. Keller - Fox Point WI

Giddings & Lewis, Inc. - Fond du Lac WI

B23B 326, B23Q 3157

29568

A contouring and threading attachment for use with numerically controlled multi-function machine tools having automatic tool changing capability. The attachment has a spindle-actuated body adapted to detachably engage an adapter collar rigidly fixed to the outer end of the spindle sleeve. The body may be installed and removed by the automatic exchange arm mechanism of the machine tool and be stored in the tool magazine when not in use. A cutting tool on the outboard end of the attachment is movably radially of the spindle axis. The radial movements of the cutting tool are executed automatically through corresponding axial movements of the spindle under the numerical control of the machine tool.