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2013•The Proceedings of the Symposium on Motion and Power TransmissionOpen access

2107 Use of Paradox Gears to Remove Vibration

Teru HAYASHI, Noritsugu MAEDA, Makoto YUI, Masaaki SHIBATA

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Abstract

At the beginning and the end of cutting in cutting machine, impulsive vibration and noise break out due to the gear backlash. For protecting the vibration, the brake method is used. That is, optional brake unit is installed to the work axis of the machine for teeth to establish contact (one-side no-backlash condition). We offer the paradox-gear method. One sub-gear with less tooth number by 1 than the drive main-gear is added on drive axis with free rotation and in mesh with work gear (paradox-gears). The main and sub-gears are pressed each other through brake shoe and spring, one-side no-backlash gearing is realized. By this method the mechanism is simpler and the energy loss is far smaller than the brake method. About the theory and practice of the paradox gear method will be presented here.

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At the beginning and the end of cutting in cutting machine, impulsive vibration and noise break out due to the gear backlash. For protecting the vibration, the brake method is used. That is, optional brake unit is installed to the work axis of the machine for teeth to establish contact (one-side no-backlash condition). We offer the paradox-gear method. One sub-gear with less tooth number by 1 than the drive main-gear is added on drive axis with free rotation and in mesh with work gear (paradox-gears). The main and sub-gears are pressed each other through brake shoe and spring, one-side no-backlash gearing is realized. By this method the mechanism is simpler and the energy loss is far smaller than the brake method. About the theory and practice of the paradox gear method will be presented here.

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Available abstract

At the beginning and the end of cutting in cutting machine, impulsive vibration and noise break out due to the gear backlash. For protecting the vibration, the brake method is used. That is, optional brake unit is installed to the work axis of the machine for teeth to establish contact (one-side no-backlash condition). We offer the paradox-gear method. One sub-gear with less tooth number by 1 than the drive main-gear is added on drive axis with free rotation and in mesh with work gear (paradox-gears). The main and sub-gears are pressed each other through brake shoe and spring, one-side no-backlash gearing is realized. By this method the mechanism is simpler and the energy loss is far smaller than the brake method. About the theory and practice of the paradox gear method will be presented here.

Key concepts: Backlash, Brake, Non-circular gear, Vibration, Spiral bevel gear, Torque, Mechanism (biology), Work (physics)

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