| 摘要 |
Device comprising a sleeve 4 with circular cross-section which is made of elastic material and is arranged between the support 2, 3 of the tool and a fixed rigid support 5 and an electromagnetic element consisting of an inductor 8 with several coils acting on the support element of the tool 2, 3, 9 produced as a solenoid, the coils of the inductor being distributed in angle around an axis passing through the centre of pivoting, all or part of the coils being supplied by currents of amplitude and/or phase determined as a function of the direction of pivoting desired and of the value of the angle of pivoting. <IMAGE>
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