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Roll Testing

PRODUCT NEWS | 2024-08-15

Mahr MWF GmbH Develops Measuring Machine for Double-Flank Gear Roll Testing

Mahr MWF GmbH has developed and built a measuring machine for double-flank gear roll testing to meet the individual requirements of a customer. This machine tests the form feature concentricity deviation Fr on the internal toothing of gears. The noise development of the subsequent gearbox can then be predicted based on the measurement results. This is an important aspect, particularly in electromobility.

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 | 2022-09-09

The new Klingelnberg GEARS inline Customer Magazine is here

In this latest edition, issue 9, of the GEARS inline Customer Magazine, Klingelnberg once again presents all sorts of trends and innovations from the world of gears. This time, the machine manufacturer focuses primarily on the hot topic of noise behavior and analysis.

INDUSTRY NEWS | 2021-09-24

Klingelnberg Presents Flexible Roll Testing on the R 300

The Höfler Cylindrical Gear Roll Testing Machine R 300 is the latest machine development from the engineering company Klingelnberg i...

FEATURE ARTICLES | 2018-07-01

In-Process, Complete Gear Inspection at Light Speeds

New GRSL technology adds value to high-volume transmission gear inspection by combining non-contact laser inspection with tried-and-true composite roll testing.

FEATURE ARTICLES | 2017-01-01

Slow and Steady

The results of our Annual State of the Gear Industry Survey (See page 26) provided insight on 2016 as well as forecasts for 2017. Here is additional insight from some of the industry's leaders.

FEATURE ARTICLES | 2016-03-01

Plastic Gearing Continues Converting the Unconverted

Plastic gears are everywhere today - throughout your car, at the oceans' lowest depths, in deep space. The question, when is a metal gear a candidate for plastic conversion, can be addressed in three words, i.e. what's the application?

TECHNICAL ARTICLES | 2014-01-01

Practical Considerations for the Use of Double-Flank Testing for the Manufacturing Control of Gearing - Part I

Part I of this paper describes the theory behind double-flank composite inspection, detailing the apparatus used, the various measurements that can be achieved using it, the calculations involved and their interpretation. Part II, which will appear in the next issue, includes a discussion of the practical application of double-flank composite inspection, especially for large-volume operations. Part II covers statistical techniques that can be used in conjunction with double-flank composite inspection, as well as an in-depth analysis of gage R&R for this technique.

FEATURE ARTICLES | 2005-05-01

New Approaches in Roll Testing Technology of Spiral Bevel and Hypoid Gear Sets

This paper presents a new approach in roll testing technology of spiral bevel and hypoid gear sets on a CNC roll tester applying analytical tools, such as vibration noise and single-flank testing technology.

TECHNICAL ARTICLES | 1994-05-01

Minimizing Backlash in Spur Gears

simplified equations for backlash and roll test center distance are derived. Unknown errors in measured tooth thickness are investigate. Master gear design is outlined, and an alternative to the master gear method is described. Defects in the test radius method are enumerated. Procedures for calculating backlash and for preventing significant errors in measurement are presented.