GDN-23 ANALYTICAL APPROACH OF TRANSMISSION GEAR NOISE(GEAR DYNAMICS AND NOISE)

概要

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The efforts of gear noise reduction has traditionally focused on minimizing transmission error, improving tooth machining capability and manufacturing control. On the other hand, gears and gearbox resonance characteristics are also known to influence the gear noise level strongly. To reduce gear noise, therefore, the entire gear resonance system is clarified by experimental analysis and a dominant mechanism is specified. With the thin and large helical gears, the analysis has shown that mesh force, consisting of gear resonance characteristics, is the most significant parameter. To reduce the mesh force, an innovative gear structure has been devised. The structure aggressively controls gear resonance characteristics like a dynamic vibration reducer. With the FEM simulation, gears are re-designed by controlling resonance characteristics, which has successfully reduced gear noise. These analyses and reduction methods of gear noise can be applied to general gear noise problem in order to conduct parameter study or optimization.
2001-11-15