Microscopic grinding method and microscopic grinding device

Details Microscopic grinding method and microscopic grinding device Microscopic grinding method and microscopic grinding device

1990-12-04

1991-12-31

Rachuba, M.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51 59SS, B24B 100

Patent

active

050760262

ABSTRACT:
A microscopic grinding device grinds a workpiece at ultrahigh precision with the use of magnetic grinding fluid actuated microscopically in three dimensional directions by Z- and XY-axis actuators. The magnetic grinding fluid is magnetically supported between a grinding member and the workpiece by the magnetic field. Because magnetic field is generated to form a magnetic circuit within the device itself where no workpiece is necessary to form the magnetic circuit, the device can be used with equal results even with workpieces made from non-magnetic material. The pressure applied to the workpiece by the grinding member via the magnetic grinding fluid is detected by a load cell for feeding back a signal indicative of the detected pressure to the controller. The controller controls the actuators to actuate the grinding member such that the pressure applied from the grinding member, via the magnetic fluid, to the workpiece is maintained within a predetermined range.

REFERENCES:
patent: 4122602 (1978-10-01), Sastn et al.
patent: 4169713 (1979-10-01), Chachin et al.
patent: 4186528 (1980-02-01), Yascheritsyn
patent: 4211041 (1980-07-01), Sakulevich et al.
patent: 4821466 (1989-04-01), Kato et al.
patent: 4920705 (1990-05-01), Lipukhin et al.
patent: 4977707 (1990-12-01), Chachin et al.

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