著者
宮近 幸逸 Daing Mohamad Nafiz Bin Daing Idris 小出 隆夫 Imaduddin Helmi Bin Wan Nordin 安藤 和彰
出版者
一般社団法人 日本機械学会
雑誌
日本機械学会論文集C編 (ISSN:18848354)
巻号頁・発行日
vol.77, no.775, pp.597-603, 2011 (Released:2011-03-25)
参考文献数
14
被引用文献数
1 2

This paper presents a study on effects of rim and web thicknesses on root stresses of thin-rimmed helical gears. Root stresses of thin-rimmed helical gears with symmetric web arrangement of various rim and web thicknesses, which were meshed with the solid helical gear, were measured from the beginning of engagement to the end of the engagement by the strain gauge method. The changes of the root stress from the beginning of engagement to the end of engagement were examined for the thin-rimmed helical gear with symmetric web arrangement. The meshing position (worst loading position), where the maximum root stress occurred, was determined for the thin-rimmed helical gear with symmetric web arrangement. The effects of rim and web thicknesses on the root stress, the maximum root stress and the position of the maximum root stress were clarified.
著者
佐藤 崇弘 田中 久隆 佐藤 昌彦 小出 隆夫
出版者
社団法人 砥粒加工学会
雑誌
砥粒加工学会誌 (ISSN:09142703)
巻号頁・発行日
vol.58, no.7, pp.451-456, 2014

小径ドリル加工における回転振れの発生は,工具径に対する回転振れの比が大きいため,加工挙動に大きな影響を及ぼす.回転振れのあるドリルは,被削面食い付き後に回転中心に収束していく場合があるが,ドリル先端形状の影響など不明な点が多い.そこで,本報告では回転振れのあるドリルの加工挙動について解析と実験から考察した.とくに,食い付き時における回転中心からみた切れ刃の向きが,加工挙動に及ぼす影響について調べた.その結果,加工中,ドリル先端中心がシャンク端面中心に対して回転方向の位相遅れが発生する場合,切れ刃の向きが時々刻々と変化することで被削材より受ける力が変化し,加工挙動に影響を及ぼすことがわかった.
著者
小田 哲 矢野 満 五家 政人 小出 隆夫
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. C編 (ISSN:03875024)
巻号頁・発行日
vol.56, no.532, pp.3416-3419, 1990-12-25
被引用文献数
4

This paper presents a study on the bending fatigue strength of austempered ductile iron (ADI) gears. The bending fatigue tests for ADI, S 45 C, FCD 80, and SCr 420 case-hardened gears were carried out, and the bending fatigue limit loads of ADI gears were compared with those of other gears. The bending fatigue limit loads of the ADI gears used were found to be almost equal to those of case-hardened gears. Furthermore, shot peening was performed on ADI gears, and the effect of shot penning on the bending fatigue limit loads of ADI gears was investigated by carrying out the bending fatigue tests. The bending fatigue limit loads of ADI gears can be raised considerably by shot peening.