歯車ホーニング用砥石の新しいドレッシング法とその効果 (第2報)

斜め方向送りによるドレッシング性能の向上

抄録

In order to reduce gear noise, it is important to improve the roughness of the making tooth surface and to give proper tooth trace and profile modification. The gear honing is reasonable in view of this, but an adequate dressing is required to transfer exactly and quickly the shape of dressing gear to gear honing abrasive wheel. Therefore, in the present investigation, a new dressing method is introduced. In the new method, radial and axial feed is given at same time for an abrasive wheel in the form of internal gear. And then idle traverse feed is given. When the feed rate is 10μm/traverse, the error of the tooth is smaller than 10μm and dressing time can be decreased from 13.4minutes to 3.4minutes at the first dressing and from 1.4minutes to 0.7minutes at the regular dressing as compared with before step feed. This is a reason why the dropped out grains are discharged very well and dressing gear form are transferred very exactly and quickly. Running tests of honed gears were conducted. About 4 dB decrease in gear noise is achieved when the accurately dressed abrasive wheel is used.