An anti-shake device for supporting a work center region during machining of a work center region and / or a work eccentric region, in particular a journal of a crankshaft, and a grinding machine having such a steady rest device

摘要

A workpiece center region (9), in particular the support bracket (7) for supporting the support part, in particular in the shaft part (6) of the crankshaft during grinding of the work center region and / or the work eccentric region will be described. In grinding, the oscillation stop device (7) is brought from the retracted position to the support position toward the work area (9) to be supported, in which case the anti-ratchet device (7 ) Has a plurality of support members (11) that can be fed into the work area (9), and these support members (11) are arranged in spaced apart peripheral areas of the work area (9) , Respectively. The workpiece (6) to be supported is supported in the support position in the work area (9). According to the present invention, each support member (11) has a predetermined opening angle relative to each other on each side face (22) of the prism face (10) opened in a fork shape provided on the steady arm (19) While being fixedly arranged with respect to each other and with respect to the steady rest arms (19). At the same time each support member (11) is arranged centrally below the longitudinal axis (5) of the work area (9) in the support position, whereby the two support members (11) The angle bisector formed between the longitudinal axis (5) of the work area (9) will have an invariant acute angle with respect to a vertical line extending through the longitudinal axis (5) of the work area (9) Along the line, CNC control type feeding is performed. A grinding machine described in another aspect of the present invention is a grinding machine comprising the above-described steady rest device (7), a steady rest device can be brought into contact with a work area during grinding of a support portion by a grinding wheel, and a grinding wheel A control device which can be cut into finished dimensions of the part, preferably a measuring device.