A Consideration for Design Guide of Tiny Load Gears Considering Cost (Influence Evaluation of Backlash, Module, Gear Width)

概要

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The pitting damages at the tooth face sometimes occur on the transfer gears for the auxiliaries of the diesel engine through a short operation time even if the load of these gears is tiny compared with the main load of the engine. This phenomenon occurs regardless of the engine power from a few decade kW to a few ten thousand kW. According to the general design thinking, if the load is tiny, the size can be small and the manufacturing cost also can be low. But the above phenomenon does not represent this thinking and represent the necessity of a particular design guide for the tiny load gears. We reproduced this phenomenon by the simulator and also drew the original formulas by which we can calculate the manufacturing cost of the gear regardless of that size. When we changed the parameters of the gears, we checked the phenomenon change and also calculated the manufacturing cost. Then we drew one original design guide for the tiny load gears considering cost.