| 摘要 |
PROBLEM TO BE SOLVED: To provide a balancing machine capable of fixing an object to be tested in which a penetration is formed at the rotational center and even the thickness of a section near the penetration is thin, only by fitting the penetration onto a basic shaft formed at the end of a rotational spindle without using a nut employed in a conventional method. SOLUTION: Plural claws 7 opening/closing in accordance with the movement of a draw bar 6, being contained within the basic shaft 5 at the closing period, being projected from the basic shaft 5 at the opening period and pressing the object to be tested W onto a work receiver 4 so as to fix the object to be tested W, are disposed at the inside of the basic shaft 5 formed at the end of the rotational spindle 1. Therefore, the object to be tested W is securely fixed on the rotational spindle 1 by fitting the penetration WH of the object to be tested W onto the basic shaft 5 and moving the draw bar.
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