| 摘要 |
PROBLEM TO BE SOLVED: To materialize high-accuracy measurement while reducing an offset error by using a center part of a load receiving part as a weighting point. SOLUTION: In load measurement, when a load is applied to an upper end of an upper force transfer rod 11 of the load receiving part 3 of a Roberval part 1, the load is transferred to a weighting point G of the receiving part 3. The receiving part 3 includes a frame body part 3a. In the body part 3a, beam parts 3b are provided so as to face the middle from respective corner parts. The beam parts 3b are substantially together combined at the center of the body part 3a and coupled to a shaft part 3c. The load by the transfer rod 11 is applied to the weighting point G of the shaft part 3c of the body part 3a. Further, even when using a lower force transfer rod 12, a load is applied to the same weighting point G. No difference arises in the offset error between the two. COPYRIGHT: (C)2009,JPO&INPIT
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