| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear head which can easily change a speed ratio of rotational speeds of a drive gear and a driven gear which are accommodated in a case. SOLUTION: A motor 21 is supported to a lid body case 14 of the gear case 12. The drive gear 23 is fit to a rotating shaft 22 of the motor 21, and the driven gear 26 fit to a main shaft 16 is rotated by a deceleration gear mechanism 27. The motor 21 is supported so as to be adjustable in terms of position in an arrow P direction which is orthogonal to an axial line O of the rotating shaft 22 by a position adjusting mechanism 32. An exchanging window 13a is formed in a part which corresponds to the drive gear 23 of a main body case 13, and the exchanging window 13a is closed by a lid plate 41. The lid plate 41 is removed, and the drive gear 23 is removed. The motor 21 is moved to the arrow P direction together with a position adjusting plate 35 by loosening nuts 36 of the position adjusting mechanism 32, and the drive gear 23 which is different in outside diameter is fit to the rotating shaft 22. COPYRIGHT: (C)2009,JPO&INPIT
|
