Abstract

Face gear dynamics is addressed by many scholars. However, design solutions of low-noise face gear drives without gear tooth modifications are not to be constructed. Thus, in this study, a design solution of low-noise face gear drives associated with micro-punch webs is proposed. A calculation procession of geometric parameters of micro-punch webs is constructed, an example case of a micro-punch web for a low-noise face gear drive is calculated, which is based on the proposed calculation procession, and the noise elimination effect of the example case is predicted. Meanwhile, the impacts of geometric parameters of micro-punch webs on sound resonant frequencies are discussed. Furthermore, an experiment of the example case is conducted to check the effect of micro-punch webs on noise reductions and the proposed calculation procession and design solution. The experimental results indicate that the noise reductions of face gear drives can be accomplished by micro-punch webs under the almost same dynamic response conditions, and the fidelity of the proposed calculation procession of geometric parameters of micro-punch webs and design solution of low-noise face gear drives can be accepted. These contributions would improve engineering applications of low-noise face gear drives.

Highlights

  • A face gear drive is a kind of intersection gear drives, and it is insensitive to manufacture and alignment errors versus spiral bevel gear drives

  • Due to high rotation speed characteristics of first-stage gear drives in helicopter main gear boxes, face gear dynamics becomes one of the study focuses of face gear drives

  • Based on the limited experimental data in the issue as shown in Figures 18 and 19 and Table 5, the results indicate that the noise of the face gear drives can be reduced more than 1 dB only by micro-punch webs under the almost same dynamic response conditions, and without considering the difference between the simulation and the experiment, namely, echo refraction effects, which are difficult to be simulated, the calculation solution of low-noise face gear drives associated with micro-punch webs can be accepted

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Summary

Introduction

A face gear drive is a kind of intersection gear drives, and it is insensitive to manufacture and alignment errors versus spiral bevel gear drives. In this study, a design solution of low-noise face gear drives associated with micro-punch webs is proposed, without considering any gear tooth modifications.

Results
Conclusion
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