The Timken Company

Timken US Corporation

Wayne V Denny

Mark E LaCroix

Alfred John Santos

Mark A Joki

Orestes J Varonis

Praveen M Pauskar

Brian Thomas Odegard

James J Burns

Kevin Rehfus

Richard J Abbruzzi

Richard Smith

Keith W Reese

A method of forming a component includes heating the component to a burnishing temperature above 500 degrees Fahrenheit, and burnishing a surface of the component while the component is at the burnishing temperature to densify the surface. The burnishing process at an elevated temperature may be integrated into other processes, such as the sintering or heat treating processes.

Method of forming a bearing component

A system for determining an absolute position of a motor. The system includes first and second multi-polar magnetic rings, first and second processing units, and at least one external sensor. The first multi-polar magnetic ring is concentrically positioned around the motor, and has a plurality of pole pairs. The second multi-polar magnetic ring is concentrically positioned around the first multi-polar magnetic ring, and has at least one pole pair. The first processing unit is positioned near the first multi-polar magnetic ring to determine an angular position over one of the pole pairs of the first multi-polar magnetic ring. The sensor is positioned external to the processing unit and over the second multi-polar magnetic ring to indicate a state of the pole pair of the second multi-polar magnetic ring. The second processing unit generates an absolute position of the motor based on the angular position and the state.

Turning device position sensing system and method

A device for sensing the input shaft speed of an automotive automatic transmission that is driven by the engine through the fluid coupling of a torque converter. The speed sensor device includes circumferentially spaced markings about the transmission input shaft and a speed sensor that is placed at close proximity to the circumferentially spaced markings through a hole in the torque converter stator shaft. An electronic control unit (ECU) analyzes the sensor output signal and in the case of an active speed sensor it also functions as its power source. During vehicle operation, the transmission input shaft rotates the target wheel in front of the speed sensor causing modulation of its output signal. The electronic control unit analyzes the signal modulation and calculates the input shaft rotational speed. A variety of sensor/target-wheel options and sensor mounting techniques could be used depending on the application constraints.

Transmission input shaft speed measuring assembly

A speed sensor (B, C) produces a signal that reflects the angular velocity of a shaft () which rotates in a case () having a mounting surface (), beyond which the shaft projects to provide a target (), and threaded holes () which open out of the mounting surface. The speed sensor includes a housing () and a sensing element () which is embedded in the housing. The housing, which is formed from a deformable material, has slots () which align with the threaded holes in the case, and receive screws () which thread into the holes to secure the speed sensor to the case. The speed sensor is positioned such that the proper air gap exists between its sensing element and the target. The screws, which extend through the slots, produce indentations () in the deformable material of the housing, and these indentations receive the screws, so that the position of the sensor is fixed. Thus, the sensor, if removed, may be reinstalled in the same location.

Speed sensor and method of attaching the same

A hub assembly includes a hub having a flange and a spindle projected from the flange, a housing located around the hub spindle, and an antifriction bearing between the housing and the spindle. The bearing includes an inner race which the spindle initially accommodates in that the spindle has a deformable end over which the inner race is passed. Thereafter, the deformable end is upset into a formed end in a rotary forming procedure that involves forcing the deformable end and a forming tool together while the spindle and tool rotate. The formed end should bear snugly against a back face on the inner race and capture the inner race on the spindle. In the forming procedure the spindle and forming tool are forced together initially in a coarse feed which provides the formed end that bears against the back face of the inner race, then at a fine feed, and finally at a dwell. The force is monitored throughout; A force or rate of change of force which fails to meet certain established criteria will result in the rejection of the hub assembly that experiences that force or rate. For example, the force approaching the end of the fine feed must increase at a rate that exceeds a prescribed minimum rate; the force at the end of the fine feed must not exceed a prescribed maximum and perhaps exceed a prescribed minimum, the force approaching the end of the dwell must exceed a prescribed minimum and must decrease at a rate above a prescribed minimum rate.

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Alliance, OH, United States of America

Wayne V Denny