Lane Winkelmann

Materials Matter : Surface Finishing Rotorcraft Gearing

Posted by on Wednesday, October 3rd, 2018 in

Rotorcraft gearboxes are designed with the utmost precision to withstand the tremendous demand and loads required to convert thousands of horsepower and RPM into hundreds of RPM and lift torque....

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The Effect of Superfinishing on Gear Micropitting, Part II

Posted by on Tuesday, November 19th, 2013 in

It should be noted from the outset that the data presented in Part I and Part II of this paper was generated by independent laboratories. Superfinishing of the gears was the authors’ sole contribution to these studies....

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The Impact of Surface Condition and Lubricant on Gear Tooth Friction

Posted by on Thursday, November 6th, 2014 in

Frictional losses in gear boxes are of significant interest to gear box designers as these losses transform into heat.  The direct result is a reduction in the fuel efficiency of the vehicle involved....

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An Evaluation of the New Rapid ISF® Process for Rear-Axle Gears

Posted by on Friday, November 15th, 2013 in

The benefits gained by Superfinishing rear-axle gearsets using traditional chemically accelerated vibratory finishing is well documented....

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The Effect of Superfinishing on Gear Micropitting, Part I

Posted by on Tuesday, November 19th, 2013 in

The most common failure mechanism of highly stressed case carburized gears is micropitting (gray staining). The standard FZG gear test (FVA Work Sheet 54) is generally used to determine the micropitting load capacity of gear lubricants....

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Superfinishing Motor Vehicle Ring and Pinion Gears

Posted by on Tuesday, November 19th, 2013 in

Today, the motor vehicle market is focusing on "lubed for life" differentials requiring no service for the life of the vehicle. Still, differentials are prone to develop problems of one sort or another since they are used to transmit a heavy torque t...

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The Capacity of Superfinished Vehicle Components to Increase Fuel Economy

Posted by on Tuesday, November 19th, 2013 in

The lubricant industry is emphasizing the use of low-viscosity lubricants to increase fuel economy. Fuel mileage increases as high as 8% are claimed when conventional engine and driveline lubricants are replaced with new generation products....

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Isotropic Superfinishing of S-76C+ Main Transmission Gears

Posted by on Tuesday, November 19th, 2013 in

Isotropic Superfinishing is a chemically accelerated vibratory finishing process that is capable of generating surface finishes with an Arithmetic Mean Roughness (Ra)< 3 min....

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Evaluation of the Scuffing Resistance of Isotropic Superfinished Precision Gears

Posted by on Tuesday, November 19th, 2013 in

The high performance required from aerospace gears places stringent requirements upon the metallurgical quality, geometry, and surface finish of mating parts....

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Effect of Superfinishing on Scuffing Resistance

Posted by on Tuesday, November 19th, 2013 in

A fundamental understanding of gear scuffing has been promoted for a number of years by the use of twin disc scuffing rigs....

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Impact of Isotropic Superfinishing on Contact and Bending Fatigue of Carburized Steel

Posted by on Tuesday, November 19th, 2013 in

An Isotropic Superfinish (ISF) is produced by a patented chemically accelerated vibratory finishing process using non-abrasive media that is capable of surface finishing hundreds of parts per hour....

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Chemically Accelerated Vibratory Finishing for the Elimination of Wear and Pitting of Alloy Steel Gears

Posted by on Tuesday, November 19th, 2013 in

Chemically Accelerated Vibratory Finishing is capable of refining hundreds of gears per hour to a superfinished isotropic condition....

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