著者

西田 知照 小林 洋一 塚本 尚久

出版者

公益社団法人精密工学会

雑誌

精密工学会誌 (ISSN:09120289)

巻号頁・発行日

vol.55, no.1, pp.111-116, 1989-01-05

---

Vibrations and noises of gears consist of the average component and the fluctuating one. The former is the component which always appears in each tooth meshing. The latter is the component which fluctuates about the average component. In the first report, it was described that the moving average method was very effective for extracting the average component. In that report, a steady rotation of gears was assumed. However, the number of revolution of gears always fluctuates more or less in actual gear equipments. In this report, the generation of the side band waves due to the fluctuation is explained and the allowable value of the fluctuation ratio is given to extract the average component.

著者

塚本 尚久

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.50, no.459, pp.2156-2164, 1984-11-25

---

無潤滑運転における防せい(錆)の意味で炭素鋼歯車の代用にステンレス歯車、黄銅歯車、鋳鉄歯車の使用を考えたがこれらの歯車とのかみ合いでナイロン歯車が使用された実績が少ないためその磨耗などの実態がわかっていない。このことから本報では上記3種類の金属歯車でナイロン歯車の磨耗実験を行いこれらの結果とすでに報告した炭素鋼歯車とかみ合うナイロン歯車の磨耗などを比較検討し相手金属歯車の材料の違いに伴うナイロン歯車の磨耗などを明らかにした。

著者

塚本 尚久 丸山 広樹 三村 博

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.59, no.568, pp.3866-3873, 1993-12-25

被引用文献数

4

---

Polycarbonate is a general-purpose engineering plastic which has been widely used, together with nylon and polyacetal. In this plastic, the rate of contraction in molding is small, and the water-absorbing property is low ; therefore, the accuracy of finishing products is high. However, there are defects such as low fatigue strength and brittle fracture, and it has not frequently been used for the gears for power transmission. In this research, for the purpose of extending the practical use of polycarbonate to gears, gears were manufactured of polycarbonate without filling (natural) and of polycarbonate in which the amount of carbon fiber filling was varied, and operation tests were carried out. In this way, such factors as the load-bearing capacity, the wear of teeth and the change of tooth. profile were investigated. These results were compared with those on polyacetal gears previously, reported. Thus the evaluation of polycarbonate as a gear material was carried out.