Charles A Conway

US Patent:

7547163, Jun 16, 2009

Filed:

Jul 16, 2007

Appl. No.:

11/879189

Inventors:

Michael G. Morrison - Tarrs PA, US
Lance D. Brunetto - Greensburg PA, US
Charles Lisle Conway - Ligonier PA, US

Assignee:

Kennametal Inc. - Latrobe PA

International Classification:

B23B 27/16
B23B 29/04

US Classification:

407103, 407105, 407107

Abstract:

A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. A guide pin prevents the clamp from twisting during tightening or loosening of the clamp. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and the top surface of the cutting insert. In addition, only a forward lower face of a head portion of the clamp screw engages a top surface of the clamp.

US Patent:

8057131, Nov 15, 2011

Filed:

Jan 17, 2009

Appl. No.:

12/355778

Inventors:

Charles Lisle Conway - Ligonier PA, US
Michael Glenn Morrison - Tarrs PA, US
Lance David Brunetto - Greensburg PA, US

Assignee:

Kennametal Inc. - Latrobe PA

International Classification:

B23B 27/16
B23B 29/04

US Classification:

407103, 407105, 407107

Abstract:

A clamping tool holder includes a tool holder body and a clamp for clamping a cutting insert. The clamp causes the cutting insert to press against the bottom and the side walls of an insert-receiving pocket of the tool holder body. The tool holder body has an inclined surface sloping inward in a direction away from the insert-receiving pocket. The clamp has an inclined surface that acts as a ramp with the inclined surface of the tool holder body. When a clamp screw is tightened, a nub of the clamp engages only an inside rearward surface of a mounting bore of the insert along a line of contact and exerts a force downward and rearward on the insert. In addition, only a forward lower face of a head portion the clamp screw engages a top surface of the clamp.

US Patent:

8388268, Mar 5, 2013

Filed:

Mar 7, 2011

Appl. No.:

13/041623

Inventors:

Nicholas J. Henry - Latrobe PA, US
Charles L. Conway - Ligonier PA, US

Assignee:

Kennametal Inc. - Latrobe PA

International Classification:

B23B 27/10
B23B 27/04

US Classification:

407 11, 407117, 407101, 407109

Abstract:

A toolholder has a head region, which contains a slot separating the head region into a lower section and an upper section, with a lower seat and an upper section to retain a cutting insert. The head region contains a coolant entrance passage, which receives coolant from a coolant source, and a coolant delivery passage, which discharges coolant toward a cutting insert. The head region further contains a fastener bore, which receives a fastener. The fastener has an axial fastener bore which provides fluid communication between the coolant entrance passage and a coolant reservoir between the fastener and the fastener bore. The coolant delivery passage communicates with the coolant reservoir to receive coolant, which passed from the coolant entrance passage and through the axial fastener bore into the coolant reservoir.