| 摘要 |
PURPOSE:To form a balance weight with one type balance weight plate and to adjust the balance in an easy manner by making up the balance weight plate with a balance adjusting part. CONSTITUTION:Plural pieces of balance adjusting parts 53 made cuttable as surrounded by intermitting slits 52 are formed in a balance weight plate 51 consisting of a circular sheet. Each balance adjusting part 53 is cut off for weight adjustment, so that weight adjustment takes place only cutting the balance adjusting parts 53. Accordingly, when a balance value ascribable to a balance weight 5 is varied to some extent, this weight adjustment is easily performable. In this connection, the balance weight plate 51 is formable all with the same die, and fine adjustment for this balance weight 5 is also simple. |
