| 摘要 |
PCT No. PCT/DE85/00285 Sec. 371 Date Jun. 6, 1986 Sec. 102(e) Date Jun. 6, 1986 PCT Filed Aug. 23, 1985 PCT Pub. No. WO86/01761 PCT Pub. Date Mar. 27, 1986.A vibratory abrader having a grinding plate which is supported at the housing by way of elastic elements, with the abrading plate being put into an orbital movement by way of a ball bearing attached to an eccentric drive member which is equipped with a compensating weight and can be caused to rotate by the armature shaft of the drive motor. To be able to make such a vibratory grinder usable for rough as well as fine abrader work by simply changing the eccentric stroke of the abrading plate, the eccentric drive member is driven by means of an eccentric pin which is likewise mounted eccentrically with respect to the axis of the armature shaft and the armature shaft is pivotal relative to the eccentric drive member and its compensating weight, with the angle of rotation between the armature shaft and the eccentric drive member in both directions being limited to 180 DEG by corresponding abutments at the armature shaft and at the eccentric drive member, and an additional compensating weight is associated with the compensating weight of the eccentric drive member, with this additional compensating weight likewise being rotatable about 180 DEG relative to the compensating weight.
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