Gear Noise and Transmission Error Measurement
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This seminar is aimed at both gear users and gear manufacturers. Dr Michael Platten will examine the basic causes of gear noise and the path from initial gear design and manufacturing errors to the final noise generation.
- The sources of Gear Noise
- Definition of Transmission Error (TE)
Gear Design for Low Noise
- TE and spur gears
- TE and helical gears
- The relation of TE to contact ratios and the concept of integer contact ratio
- Effect of misalignment on tooth contact
- Practical approaches to designing gears for low TE
- TE in planetary gears (theory of factorising and non-factorising)
- Tooth passing frequencies
- Gear pairs
- Planetary gears
- Run out ; generation of side bands
- Ghost frequencies and their origin
The practical aspects of noise measurement will be considered where in order to correctly diagnose the cause/source of the noise, it is necessary to correctly identify the frequency. Reference will be made back to the section on “Noise Signals.”
Key skills and knowledge:
The student will be able to differentiate between actual gear noise problems and noise generated by other sources, identify the remedial action required to alleviate the problem and where to seek additional help if required.
This course is officially recognised as complying with universally accepted principles of Continual Professional Development (CPD) and have been structured to meet the criteria of personal development plans.
CPD certification means that the content and structure of the courses have been independently assessed and approved for multi-disciplinary and industry-wide continuing personal and professional development purposes.