Hermann J Stadtfeld

US Patent:

6390893, May 21, 2002

Filed:

Nov 22, 1999

Appl. No.:

09/444682

Inventors:

Hermann J. Stadtfeld - Rochester NY
Uwe Gaiser - Avon NY

Assignee:

The Gleason Works - Rochester NY

International Classification:

B24B 100

US Classification:

451 47, 451 28, 451161, 451219

Abstract:

A method of machining at least one tooth flank of a gear with a finishing tool. The method comprises rotating the finishing tool, such as a grinding tool, and bringing the tool and the tooth flank into contact. Relative movement between the tool and the gear is provided to traverse the tool across the tooth flank along a path whereby the path produces a tooth flank geometry of a form which, when brought into mesh with a mating tooth flank to form a tooth pair under no load or light load, provides a motion graph curve that intersects, at least two times, a motion graph curve of at least one of an immediately preceding tooth pair and an immediately following tooth pair. The motion graph curve of the tooth pair describes contact between respective tooth flanks of said tooth pair from an initial entrance into mesh to a final exit from mesh as being over a gear rotation amount of greater than 1. 0 pitch and preferably, about 1. 5 pitch to about 3. 0 pitch.

US Patent:

7364391, Apr 29, 2008

Filed:

Oct 4, 2006

Appl. No.:

11/543611

Inventors:

Hermann J. Stadtfeld - Rochester NY, US
Uwe Gaiser - Ostfildern, DE
Earl D. Ervay - Fairport NY, US
Theodore J. Krenzer - West Rush NY, US

Assignee:

The Gleason Works - Rochester NY

International Classification:

B23F 17/00
B23F 5/20

US Classification:

409 2, 409 51, 409 50, 409 55, 700194, 451 47, 451900

Abstract:

A method and tool arrangement for producing straight bevel gears and the like on a multi-axis computer controlled machine wherein a single tool is utilized in the machining process.

US Patent:

7462092, Dec 9, 2008

Filed:

Sep 13, 2007

Appl. No.:

11/900752

Inventors:

Hermann J. Stadtfeld - Webster NY, US
Uwe Gaiser - Ostfildern, DE

Assignee:

The Gleason Works - Rochester NY

International Classification:

B24B 49/00

US Classification:

451 11, 451 47, 451147, 451215, 451219

Abstract:

A method for providing a surface structure wherein conventional grinding micro scratches are broken up to provide a diffuse structure of micro scratches and micro flats resulting from grinding wheel motion comprising an eccentric revolving of the grinding wheel and/or grinding wheel pulsing.

US Patent:

7651383, Jan 26, 2010

Filed:

Oct 12, 2007

Appl. No.:

11/974272

Inventors:

Hermann J. Stadtfeld - Webster NY, US

Assignee:

The Gleason Works - Rochester NY

International Classification:

B24B 49/00
B24B 51/00

US Classification:

451 5, 409 67, 451 47

Abstract:

The present invention provides a controllable gear lapping process whereby the lapping process may be modified at discrete locations on the tooth surface in order to selectively modify the tooth flank surface.

US Patent:

8561277, Oct 22, 2013

Filed:

Mar 16, 2009

Appl. No.:

12/863595

Inventors:

Hermann J. Stadtfeld - Webster NY, US
Joseph A. Courtney - Rochester NY, US
Gary J. Kimmet - Rochester NY, US

Assignee:

The Gleason Works - Rochester NY

International Classification:

B23Q 17/00
B21D 53/28
G01B 5/20

US Classification:

2940701, 2940705, 298933, 33201, 33550

Abstract:

A method of determining axial and/or radial runout due to workholding equipment and compensating for such runout during machining of a gear wherein axial and/or radial runout compensations are executed during the machining of each individual tooth slot.

US Patent:

8573087, Nov 5, 2013

Filed:

Nov 24, 2009

Appl. No.:

13/127650

Inventors:

Hermann J. Stadtfeld - Webster NY, US

Assignee:

The Gleason Works - Rochester NY

International Classification:

F16H 1/12

US Classification:

74416, 74417, 74423, 74457, 744595

Abstract:

A gear pair set comprising low shaft angle and offset bevel gears and a method for their manufacture including determination of the appropriate gear and pinion blanks and the basic machine settings for their manufacture. The pair of bevel gears comprises a first member and a second member wherein the members of the pair have a shaft angle in the range of greater than 0° to 30°, preferably greater than 0° to 20°, and have an offset in the range of greater than zero to the sum of half the mean pitch diameters of the two members of the bevel gear pair.

US Patent:

20080279642, Nov 13, 2008

Filed:

May 7, 2008

Appl. No.:

12/151521

Inventors:

Hermann J. Stadtfeld - Webster NY, US
Alan E. Vossler - Fairport NY, US

International Classification:

B26D 1/12

US Classification:

407 21

Abstract:

A manner of reducing or eliminating chip packing in gear cutting tools, especially in bevel gear cutting tools wherein the back surfaces of at least some cutting blades are modified by the introduction of a rake angled surface and/or a hook angled surface thereby resulting in an opening-up of the gap between successive cutting blades in a direction radially or axially away from the cutting tool. Such an opening-up facilitates the removal of chips from between the cutting blades as the cutting tool rotates during cutting.

US Patent:

20110103911, May 5, 2011

Filed:

Jun 23, 2009

Appl. No.:

12/996698

Inventors:

Hermann J. Stadtfeld - Webster NY, US

Assignee:

THE GLEASON WORKS - Rochester NY

International Classification:

B23F 9/10

US Classification:

409 26

Abstract:

A method of manufacturing bevel gears with a tool, such as a tapered milling tool (), wherein the tool is located at a position offset (R) from the center position of a conventional face milling cutter and the tool follows a path, such as a circular arc path, during machining.