MACHINE TOOL FOR WORKING FLAT SURFACES Russian patent published in 2003 - IPC

FIELD: grinding of large-area flat surfaces, testing and marking high-accuracy plates. SUBSTANCE: machine tool has member for basing it in the form of foundation arranged without possibility of shifting in adjustable bearing units mounted on worked surface. Mechanism for moving grinding head is in the form of plate freely mounted on foundation with possibility of rotation relative to column mounted along rotation axis of machine tool and rigidly secured to foundation. Two discs carrying levers rigidly secured to them are mounted in bearing assemblies on plate and they are equally spaced from rotation axis of machine tool. Each lever carries counter-weight in one end. One lever carries grinding head in other end; second lever carries rotation drive unit of grinding head joined with it through belt transmission. Surface is worked by means of step mechanism according to previously worked surface. Rotation axis of machine tool is always normal relative to theoretical plane. EFFECT: high accuracy of working. 3 cl, 4 dwg