| 摘要 |
PROBLEM TO BE SOLVED: To reduce the whole shaking by suppressing vibration of a testing machine caused by rotation of a screw rod. SOLUTION: A pair of screw rods 12 are erected on a base 11, and the screw rods 12 are rotated by driving a motor 23, and a crosshead 13 is moved up and down along the screw rods 12. Each disk having a plurality of screw holes opened therein in the circumferential direction is mounted as a balance adjusting part 30 on upper and lower both ends of each screw rod 12. A bolt is screwed on a part of the screw holes so as to cancel unbalance of rotation of the screw rods 12. COPYRIGHT: (C)2008,JPO&INPIT
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