The present invention discloses a device for removal of wheel rim burr which comprises a main body, plural positioning wheels, an eccentric wheel disposed on the main body, and at least two brush wheels disposed between two corresponding positioning wheels.

When a work W rotates counterclockwise about an axis O.sub.w and is subjected to infeed grinding by a regulating wheel (1) which rotates clockwise about an axis O.sub.1 and a grinding wheel (2) which rotates clockwise about an axis O.sub.2, a load F acting on a blade (4), a load acting on the work W supported by the blade (4), and a load operating position y in the blade (4) at any given time are measured by a controller (20) based on the outputs of a first stress sensor S.sub.1 and a second stress sensor S.sub.2 and according to the correlation information stored in a storage device. If the component of a specified frequency extracted by performing frequency analysis of the time series of the load exceeds a threshold value, then designation processing is carried out to reduce the component of the designated frequency to the threshold value or less.

When a work W rotates counterclockwise about an axis O.sub.w and is subjected to infeed grinding by a regulating wheel (1) which rotates clockwise about an axis O.sub.1 and a grinding wheel (2) which rotates clockwise about an axis O.sub.2, a load F acting on a blade (4), a load acting on the work W supported by the blade (4), and a load operating position y in the blade (4) at any given time are measured by a controller (20) based on the outputs of a first stress sensor S.sub.1 and a second stress sensor S.sub.2 and according to the correlation information stored in a storage device. If the component of a specified frequency extracted by performing frequency analysis of the time series of the load exceeds a threshold value, then designation processing is carried out to reduce the component of the designated frequency to the threshold value or less.

A grinding apparatus includes a table that holds a workpiece, and a grinding unit including a grinding wheel mounted to a spindle. The grinding wheel has a grindstone formed by binding abrasive grains with a bonding agent. In addition, the grinding apparatus further includes: a grinding water supply unit that supplies grinding water to at least the grindstone; a light applying unit that is disposed adjacent to the table and that applies light to a grinding surface of the grindstone grinding the workpiece held by the table; and a light applying unit moving section by which the light applying unit can be positioned at a first position on a rotational trajectory of the grinding wheel in the case where the grinding wheel has a first diameter and a second position on a rotational trajectory of the grinding wheel in the case where the grinding wheel has a second diameter.

A grinding apparatus includes a table that holds a workpiece, and a grinding unit including a grinding wheel mounted to a spindle. The grinding wheel has a grindstone formed by binding abrasive grains with a bonding agent. In addition, the grinding apparatus further includes: a grinding water supply unit that supplies grinding water to at least the grindstone; a light applying unit that is disposed adjacent to the table and that applies light to a grinding surface of the grindstone grinding the workpiece held by the table; and a light applying unit moving section by which the light applying unit can be positioned at a first position on a rotational trajectory of the grinding wheel in the case where the grinding wheel has a first diameter and a second position on a rotational trajectory of the grinding wheel in the case where the grinding wheel has a second diameter.

The invention relates to a centerless cylindrical grinding machine (100) for throughfeed and plunge grinding of arbitrary workpieces comprising a first drivable positioning axis X.sub.S for a grinding headstock (10) with a grinding wheel (11) rotatable about an axis of rotation (12) and a second drivable positioning axis X.sub.R for a regulating wheel headstock (20) with a regulating wheel (21) rotatable about an axis of rotation (22), and a workpiece support (32) arrangeable substantially between the grinding headstock (10) and the regulating wheel headstock (20), wherein a further drivable positioning axis Y.sub.W, extending orthogonal to at least one of the positioning axes X.sub.S and X.sub.R, is mounted for a carriage (31) on a carriage track (30), via which the workpiece support (32) is movable, wherein the grinding headstock (10) and the regulating wheel headstock (20) are arranged in a first area (41) of a machine bed (40) and the carriage track (30) is at least partially arranged in a second area (42) of the machine bed (40), wherein the second area (42) of the machine bed (40) has a lesser extension in a direction parallel to the positioning axis Y.sub.W than the first area (41) of the machine bed (40).

The invention relates to a centerless cylindrical grinding machine (100) for throughfeed and plunge grinding of arbitrary workpieces comprising a first drivable positioning axis X.sub.S for a grinding headstock (10) with a grinding wheel (11) rotatable about an axis of rotation (12) and a second drivable positioning axis X.sub.R for a regulating wheel headstock (20) with a regulating wheel (21) rotatable about an axis of rotation (22), and a workpiece support (32) arrangeable substantially between the grinding headstock (10) and the regulating wheel headstock (20), wherein a further drivable positioning axis Y.sub.W, extending orthogonal to at least one of the positioning axes X.sub.S and X.sub.R, is mounted for a carriage (31) on a carriage track (30), via which the workpiece support (32) is movable, wherein the grinding headstock (10) and the regulating wheel headstock (20) are arranged in a first area (41) of a machine bed (40) and the carriage track (30) is at least partially arranged in a second area (42) of the machine bed (40), wherein the second area (42) of the machine bed (40) has a lesser extension in a direction parallel to the positioning axis Y.sub.W than the first area (41) of the machine bed (40).

A workpiece spindle for a magnetic-shoe external cylindrical grinding machine a spindle for rotating a ring-shaped workpiece, a holding device for holding the ring-shaped workpiece and a hydraulic magnetic core lifting device coupled to the spindle and to the holding device to vary an axial spacing between the holding device and the spindle. The holding device has a magnetic shoe for clamping the ring-shaped workpiece in the holding device.

A workpiece supporting device (6) includes a base stand (10), a shoe (11) which is disposed on at least one place in a circumferential direction of a workpiece (1a) that is rotationally driven using a rotary drive device (4) and is in sliding contact with a circumferential surface of the workpiece (1a), and a supporting body (12) which supports the shoe (11) with respect to the base stand (10). The supporting body (12) includes a compliant structure portion (a leaf spring (14)) which tilts the shoe (11) in accordance with tilting of the workpiece (1a) with respect to the base stand (10).

A sharpener cover retrofit attachment to retrofit an electrode sharpener cover attachment on an electrode sharpener, the electrode sharpener for sharpening an electrode rod and having a protruding hollow sharpener shaft with a sharpener shaft outer diameter and a rotating sharpener shaft inner diameter for accepting the electrode rod. The attachment includes a first and second annulus, both axially aligned such that they are able to accept and align the electrode rod into the rotating sharpener shaft inner diameter.