円筒歯車の加工と性能に関する研究 : 第1報,歯面強さ向上を目的とした仕上げホブの適用

概要

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Recent research indicates that tooth surface roughness has a significant influence on the surface durability of gears. In order to obtain smooth tooth surfaces economically, the authors have developed new finish-hobs, which have many numbers of gashes and a positive rake angle to control the occurrence of built-up edges. By applying these hobs to the finish-hobbing of medium-hardness gears(HB<bcong>340), the surface roughness is reduced to a half or a third compared with usually hobbed gears. The surface durability of finish-hobbed gears is investigated by using a power circulating-type gear testing machine. The relation between tooth surface roughness and pitting area ratio can be grasped quantitatively. And it is clear that these new finish-hobs are practical for obtaining a high load-carrying capacity of the gears.
社団法人日本機械学会の論文
1986-11-25