| 摘要 |
PCT No. PCT/EP93/01945 Sec. 371 Date Nov. 1, 1994 Sec. 102(e) Date Nov. 1, 1994 PCT Filed Jul. 22, 1993 PCT Pub. No. WO94/03788 PCT Pub. Date Feb. 17, 1994An apparatus for balancing the grinding wheel (2) of a grinding machine, comprising an assembly coupled to and rotating with the wheel and including masses (24, 26) the position of which is adjustable and electrical motors (28, 30) to control adjusting movements of the masses. The electrical connection between the motors and a survey and processing unit (16) including a power source (40) is provided by slip rings (48) and brushes (54). The brushes are fixed to a movable support (52). A spring (58) acts on the movable support to space the brushes apart from the slip rings. An actuator including, for example, electromagnets (60) acts on the movable support to perform the contact between the brushes and the corresponding slip rings.
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