| 摘要 |
A tool structure (100) comprises a rod (110) and a working head (120). The rod (110) has a first end (111) and a second end (112) located at a predetermined distance x. The working head (120) has a mass m 1 and is engaged at the first end (111) of the rod (110). The tool structure (100) provides furthermore a stiff elongated element (130) integral to the rod (110) at the second end (112). A balancing body (140) is moreover provided having mass m 2 and constrained to the stiff elongated element (130) at a predetermined position H located at a predetermined distance y from the second end (112) of the rod (120). In this way, considering a pivot point P located at the second end (112) of the rod (120), the moments M 1 and M 2 produced by, respectively, the masses m 1 and m 2 with respect to the pivot point P oppose each others. |
