| 摘要 |
PURPOSE:To improve measuring accuracy by providing the titled instrument with a volt in which an axial direction penetrating hole is formed in its axial center part and a core body coupled with the penetrating hole of said volt so that tensil axial stress is generated when tensile axial force acts on the volt. CONSTITUTION:A coupled force measuring instrument 2 consists of a coupling volt 4 and a core body 6. The coupling volt 4 is formed by drilling a penetrating hole 12 penetrated in the axial line direction into the center part of a normal volt provided with a head part 8 and a screw part 10. The core body 6 consists of a large diameter head part 18 and an axial part 20 extended from the head part 18 to the lower part and the outer diameter of the head part 18 is actually the same as the inner diameter of a large diameter recessed part 14 of said penetrating hole 12. By said configuration tensile axial stress is generated when tensile axial force acts on the volt, so that coupled axial force can be precisely measured, improving the former measuring accuracy. |
