Vibration polishing device

1. A vibration polishing device comprising:

a vibration drive comprising a base part, a counter-oscillating part, a vibration plate, a first drive part, and a second drive part;

wherein the base part and the counter-oscillating part are coupled by first leaf springs having their main planes grouped around a central axis in accordance with radial helical surfaces;

wherein the base part and the vibration plate are coupled by second leaf springs having their main planes grouped around the central axis in accordance with radial helical surfaces; and

wherein the first drive part is arranged so as to be supported on the counter-oscillating part, and the second drive part is arranged so as to be supported on the vibration plate, for generating oppositely oscillating rotational oscillatory movements between the counter-oscillating part and the vibration plate when the vibration drive is in operation;

further comprising:

a polishing disc which is firmly connected to the vibration plate; and

a polishing bowl which is adapted to receive a polishing medium and the samples to be polished and which is coupled to the polishing disc.

2. The vibration polishing device of claim 1 , further comprising:

a control unit for power supply to the first and second drive parts in terms of voltage, current, and pulse formation; and

an acceleration sensor which measures accelerations occurring when the device is in operation, on the counter-oscillating part and on the vibration plate and thus also onto the polishing disc and onto the polishing bowl and which generates acceleration signals based thereon, which are fed back to the control unit.

3. The vibration polishing device of claim 1 ,

wherein the polishing medium comprises a carrier material and polishing agent.

4. The vibration polishing device of claim 3 ,

wherein the carrier material is a polishing cloth and the polishing agent is provided in the form of a polishing agent suspension.

5. The vibration polishing device of claim 1 ,

wherein the polishing bowl is coupled to the polishing disc so as to be detachable.

6. The vibration polishing device of claim 5 ,

wherein the detachable coupling of the polishing bowl to the polishing disc is by magnetic holding force.

7. The vibration polishing device of claim 6 ,

wherein ferromagnetic layers or parts are attached on the upper side of the polishing disc and on the underside of the polishing bowl.

8. The vibration polishing device of claim 5 ,

wherein the polishing bowl is in the form of a plastic container for the carrier material and for the polishing agent suspension and can be closed with a lid and has a carrying handle to be placed on the polishing disc and lifted from the polishing disc as a closed container.

9. The vibration polishing device of claim 8 ,

wherein closed containers are stackable one above the other.

10. The vibration polishing device of claim 9 ,

wherein the polishing bowl has a central recess at its underside and the lid has a central projection on its upper side such that containers to be stacked one above the other can be fitted with their respective central recess onto the respective underlying projection.

11. The vibration polishing device of claim 1 ,

wherein centering and/or indexing means are arranged between the polishing disc and the polishing bowl.

12. The vibration polishing device of claim 1 ,

wherein the polishing bowl has a base wall with a receiving space for the polishing medium and a circumferential lateral wall with a groove for receiving a rubber-elastic ring which is adapted to clamp the edge of a polishing cloth that forms part of the polishing medium.