■著者<br />ShoHonda<br /><br />■目次<br />１ Introduction；２ Basic theory；３ Design method of tooth surfaces for quieter gear pairs；４ Involute helicoid and its conjugate tooth surface；５ Variation of tooth bearing and engagement error caused by assembly errors；６ Rotational motion of gears and dynamic increment of tooth load；７ Design of a pair of tooth surfaces transmitting inconstant rotational motion；８ Summary<br />