Flank Modification

TECHNICAL ARTICLES | 2023-02-21

Aspects of Gear Noise, Quality, and Manufacturing Technologies for Electromobility

In modern automotive vehicles, gear noise becomes more and more of an issue. The main reason is the reduced masking noise of the engine, which vanishes completely in the case of an electric driveline. Improved gear quality unfortunately does not correlate with a better noise performance in any case. High gear quality makes sure that the gear flanks are inside tight tolerances and that all teeth are nearly identical. Even if the running behavior of such gear sets shows a very low sound pressure level, the noise perception for human ears may be annoying.

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.

GEAR TALK WITH CHUCK | 2018-05-22

Further Modifications

You might be thinking this conversation would logically move to other tooth modifications. Gear Technology has and will c...

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

INDUSTRY NEWS | 2014-05-01

Industry News

The complete Industry News section from the May 2014 issue of Gear Technology.

TECHNICAL ARTICLES | 2011-05-01

Micropitting of Big Gearboxes: Influence of Flank Modification and Surface Roughness

Most research on micropitting is done on small-sized gears. This article examines whether those results are also applicable to larger gears.