TECHNICAL ARTICLES | 2024-12-12

Experimental and Analytical Study of the Effect of Shot Peening on Gear Micropitting and Contact Fatigue Failure

This study aims to investigate the effect of this identified type of shot peening on the micropitting resistance of the gear tooth flanks and the macropitting resistance and to compare the experimental results with the calculation results based on standard methods.

TECHNICAL ARTICLES | 2023-12-11

Investigation of the Manufacturability of Topological Modifications Using Adapted Kinematics for Gear Skiving

Gear skiving is used for both soft and hard finishing. As a quality critical final step in hard finishing, the process can be used to create modifications to the tooth flank. At present there is no knowledge of the extent to which topological modifications can be applied by gear skiving. In this report, the feasibility of manufacturing topological modifications on an external gear through adapted kinematics for gear skiving has been investigated.

VIDEO | 2022-02-28

Laser Gear Inspection with Douglas Beerck of Gleason

Gear Technology Associate Editor Alex Cannella sits down with Douglas Beerck of Gleason Metrology at IMTS 2018 to discuss the latest technology in inline laser gear inspection. This video is part of the Revolutions series on Gear Technology TV.

INDUSTRY NEWS | 2021-12-14

Modified Crowning with Klingelnberg

Klingelnberg examines how engine management in electrically driven cars requires a very different specification of the driveline and the gearbox.

INDUSTRY NEWS | 2021-02-22

Fatigue Strength and Service Calculation of Gears

Bevel gear design is well-established. Flank geometry optimization is used worldwide to ensure satisfactory low-noise emis...

TECHNICAL ARTICLES | 2019-01-01

Flank Profile Modification Optimization for Spur Asymmetric Gears

In many gear transmissions, tooth load on one flank is significantly higher and is applied for longer periods of time than on the opposite one; an asymmetric tooth shape should reflect this functional difference. The advantages of these gears allow us to improve the performance of the primary drive tooth flanks at the expense of the opposite coast flanks, which are unloaded or lightly loaded during a relatively short work period by drive flank contact and bending stress reduction. This article is about the microgeometry optimization of the spur asymmetric gears’ tooth flank profile based on the tooth bending and contact deflections.

TECHNICAL ARTICLES | 2016-06-01

Worm Gear Efficiency Estimation and Optimization

This paper outlines the comparison of efficiencies for worm gearboxes with a center distance ranging from 28 - 150 mm that have single reduction from 5 to 100:1. Efficiencies are calculated using several standards (AGMA, ISO, DIN, BS) or by methods defined in other bibliographic references. It also deals with the measurement of torque and temperature on a test rig — required for the calibration of an analytical model to predict worm gearbox efficiency and temperature. And finally, there are examples of experimental activity (wear and friction measurements on a blockon- ring tribometer and the measurements of dynamic viscosity) regarding the effort of improving the efficiency for worm gear drivers by adding nanoparticles of fullerene shape to standard PEG lubricant