Paul T Fitzpatrick

US Patent:

41876440, Feb 12, 1980

Filed:

Jun 26, 1978

Appl. No.:

5/919198

Inventors:

Paul Fitzpatrick - Southfield MI

Assignee:

Ex-Cell-O Corporation - Troy MI

International Classification:

B24B 508

US Classification:

51 34D

Abstract:

A multiple spindle honing machine of the disclosure includes automatically controlled feed cylinders for initially expanding honing tools driven by the spindles and also includes a constant rate feed mechanism that continues to expand the tools after the initial expansion actuated by the feed cylinders. Each spindle includes a connector that extends between one of the feed cylinders and its associated honing tool. Mechanical locks respectively lock first threaded members of the connectors after the initial tool expansion. Second threaded members of the connectors are unthreaded from the first members thereof by an actuating member, preferably embodied by the gear rack, of the constant rate feed mechanism so as to continue the tool expansion and completion of honing operation. Electrical and hydraulic circuits control operation of the pressure feed cylinders, the constant rate feed mechanism, and the mechanical locks. Each honing tool is automatically contracted independently of the other tools after the bore being machined thereby reaches the required size and, after all of the tools are contracted, the feed cylinders may be actuated to re-expand the tools for a finishing operation.

US Patent:

41999037, Apr 29, 1980

Filed:

Apr 19, 1978

Appl. No.:

5/897626

Inventors:

Paul Fitzpatrick - Southfield MI

Assignee:

Ex-Cell-O Corporation - Troy MI

International Classification:

B24D 900

US Classification:

51339

Abstract:

An abrading tool (20, 20a, 20b) is disclosed as having a tapered arbor (22) and an abrasive insert 24 including a helical element (28) with a plurality of coils (30) that receive the arbor in an axially incompressibly mounted relationship. An abrasive strip (32) of a helical shape on the coils performs a machining operation upon tool rotation. The abrasive strip on each coil is spaced from the abrasive strip on adjacent coils. Nuts (40, 44, 46) threaded on the arbor provide a means for adjustably positioning the abrasive insert axially along the arbor to control the diameter of each coil in order to initially size the insert and to subsequently compensate for wear of the abrasive strip. Different embodiments disclosed include a helical spacer (34, 36) which spaces the coils of the helical element, coils which are directly engaged with each other and define a helical groove (64) that receives a spacer (66) located between the abrasive strip on each coil, and passages (56, 58, 60, 62) through the arbor and the insert for feeding fluid to the abrasive strip.

US Patent:

41738527, Nov 13, 1979

Filed:

Jun 8, 1978

Appl. No.:

5/913612

Inventors:

Paul Fitzpatrick - Southfield MI

Assignee:

Ex-Cell-O Corporation - Troy MI

International Classification:

B24B 500

US Classification:

51355

Abstract:

A rotatable cutting tool (10) of the disclosure includes an expandable cutting section (40) and a leading end having an expandable pilot (16) for properly aligning the tool during use. The trailing end of the tool preferably also has an expandable pilot (18) for aligning the tool during movement back through a bore which has been machined. A unitary body (20) of the tool has a helical slot (24) extending axially therethrough and has an inner tapered surface (26) for mounting the tool on a tapered arbor (12) such that movement therealong by nuts (34, 36, 38) engaged with axial end surfaces of the pilots controls the size of the cutting section and the pilots. The expandable tool construction is particularly adaptable for abrasion tools and is disclosed with abrasive particles (22) secured to the cutting section.

US Patent:

44856571, Dec 4, 1984

Filed:

Feb 10, 1982

Appl. No.:

6/347747

Inventors:

Robert R. Ridley - Pontiac MI
Paul Fitzpatrick - Fenton MI

Assignee:

Ex-Cell-O Corporation - Troy MI

International Classification:

B21D 1700
B21D 5328
B21H 502

US Classification:

72 88

Abstract:

A tool is provided for pressure forming teeth in the periphery of a cylindrical, tubular workpiece such as a power transmission member by rolling. The tool has an improved tooth generating configuration which improves the flow characteristics of the metal in the workpiece and develops uniformity of tooth wall thickness during the tooth generating process.

US Patent:

42915040, Sep 29, 1981

Filed:

Mar 3, 1980

Appl. No.:

6/126922

Inventors:

Paul Fitzpatrick - Fenton MI
Richard J. Gavasso - West Olive MI

Assignee:

Ex-Cell-O Corporation - Troy MI

International Classification:

B24B 4906
B24B 100

US Classification:

5116588

Abstract:

A method and apparatus for gaging the cross-sectional bore diameter generated by an abrading type finishing tool in an abrading machine. The tool and plug gage are mechanically mounted to the same spindle with the plug sized to a predetermined diameter and mounted behind the machining element. The plug gage is indexed to enter the bore being machined at predetermined cycles to determine if an undersize condition of the tool exists. Failure of the plug gage to enter the bore would indicate an undersize condition of the tool and upon the gage entering the bore it would indicate a correct tool size. The invention has further apparatus for shutting down the machine in the event an undersize condition is determined.

US Patent:

41887557, Feb 19, 1980

Filed:

Apr 19, 1978

Appl. No.:

5/897625

Inventors:

Paul Fitzpatrick - Fenton MI

Assignee:

Ex-Cell-O Corporation - Troy MI

International Classification:

B24D 1700

US Classification:

51206P

Abstract:

An expandable abrading tool (20, 20a, 20b) disclosed includes a rotatable arbor (22) and an abrasive insert (24, 24a, 24b) having stacked washers (26) which receive the arbor and are mounted thereon in a clamped relationship. Each washer has a round outer edge including an abrasive (32) secured thereto for performing a cutting operation upon tool rotation. The washers each have a frustoconical shape that points toward one axial end of the insert. A threaded clamp (38, 40, 42, 44) which provides a means for clamping the ends (34, 36) of the insert is adjustable to increase the clamping force in order to flatten the washers and thereby control the washer diameters. The insert can thus be initially sized for use and can be adjusted to compensate for wear of the abrasive. Different embodiments of the abrasive insert include the washers with slightly smaller spacers (28) interposed therebetween in an alternating relationship, the washers directly engaged with each other, and flutes (46) in the outer edges of the washers. It is preferable but not absolutely necessary that the flutes (46) be aligned in an axial relationship along the insert length.