Abstract: The invention relates to a vulcanized fiber grinding tool (1) comprising two vulcanized fiber grinding disks (2, 3) which are adhered to each other over the entire surface by means of an adhesive layer (4) arranged between the vulcanized fiber grinding disks (2, 3) such that the vulcanized fiber grinding disk (2, 3) outer faces provided with the grinding means point away from each other and the use of a support plate is not necessary.

Abstract: A center clamp used with a machining tool having an annular edge has a C-shaped body having an inner end inside the edge and an outer end outside the edge and spaced from it along a clamp axis. A push rod extends along the axis through the outer body end. A rotary joint centered on the axis has an inner part on the inner body end and an outer part rotatable on the inner part about the axis. An axial actuator relatively axially shifts the body and the push rod and thereby clamps a workpiece between an end face of the rod and the outer part of the joint. An angular actuator pivots the push rod about the axis and thereby, when the workpiece is clamped between the rod and the joint, pivots the workpiece about the axis.

Abstract: A dressing wheel has a disk-shaped base body centered on an axis and formed with an annular groove also centered on the axis and having an inner surface. A multiplicity of abrasive elements distributed along the groove are in direct contact with the groove inner surface. Matrix powder fills the groove between the elements and between the elements and the groove surfaces. A hardened infiltrating agent, e.g. solder, fills interstices of the matrix powder.

Abstract: A dressing wheel has a disk-shaped base body centered on an axis and formed with an annular groove also centered on the axis and having an inner surface. A multiplicity of abrasive elements distributed along the groove are in direct contact with the groove inner surface. Matrix powder fills the groove between the elements and between the elements and the groove surfaces. A hardened infiltrating agent, e.g. solder, fills interstices of the matrix powder.

Abstract: The invention relates to a conditioning device (1) for grinding wheels (2) for machining the edge areas of plate-shaped objects, such as, for example, glass panes or the like, for which the grinding wheels (2), in a conditioned state, have at least one circumferential groove (3) each, which, at least in a partial section, tapers off towards the grinding wheel center. To provide such a conditioning device with which the conditioning of such grinding wheels is possible in an easy way and at any time and any place, the conditioning device has to have a cross section adapted to the cross section of the groove to be achieved, wherein the width of the conditioning device basically corresponds to the width of the groove(s) and the length orientation from one lateral end to the other lateral end of the conditioning device is configured in accordance with the depth orientation from one side edge to the other side edge of the groove(s) with growing length at increasing depth to be achieved.

Abstract: A device and a method for distinguishing and automatically identifying and classifying tools using the device are disclosed. The device has a fixed reading unit attached to a machine tool and a coding system on a rotating tool. The coding system is a series of coding elements which are arranged on the rotating tool in the circumferential direction having a prescribed pitch spacing at different circumferential distances from one another, and which are successively sensed by the reading unit during rotation of the tool.

Abstract: A countersink bit for glass has a shaft extending along and rotatable about an axis, a head fixed to the shaft and having a frustoconical surface centered on the axis, a layer of grinding material on the surface, and an axially relatively incompressible plastic body capable of transmitting torque between the surface and the shaft. The plastic body has good damping capabilities so that any tendency of the head to vibrate or chatter is largely eliminated.

Abstract: A grinding disk (20) has a a peripheral groove for grinding the edges of glass panes (11), whereby a cooling liquid is fed to the point of grinding (18). When the disk (20) is in a mounted position, a lateral stop surface (8) fits closely against the opposite surface (7) of the grinding spindle, whereby the axial position thereof in relation to the lane of the glass pane can be adjusted. In order to increase the service life of said tool, irrespective of the composition of the abrasive product, the grinding disk (20) has a stop surface (8(I), 8(II)) on two opposite-lying flat sides (I, II) in addition to two peripheral grooves (13,14), whereby each peripheral groove is assigned to one of the two stop surfaces (8(I), 8(II)). The two peripheral grooves (13,14) are located at the same distance (X,X) from the respective stop surfaces (8(I), 8(II)).

Abstract: The invention relates to a method and a device for the electroerosive dressing of grinding wheels having an electrically conductive bond. The dressing tool comprises a cylindrical electrode pair divided into two, the electrodes (2, 3) of which have a different polarity and are separated from one another by insulation (4). A voltage circuit is directed via the two electrodes (2, 3). The voltage may either be a direct-current voltage of an alternating-current voltage. The dressing tool rotates and is pressed against the grinding wheel (1) with a constant force. The two dressing electrodes (2, 3) are supplied with current from a generator (7) via brushes (5,6) in such a way that it flows through the electrode (3) into the grinding wheel (1and from the latter back into the other electrode (2).

Abstract: A dressing roll having a peripheral surface comprising diamond grains that are bonded by electroplating in a metal ring, the inner surface of which is readily connected to a cylindrical surface of a roll core as a basic structure. The rigid connection between the metal ring containing the diamond grains and the basic structure consists of a composite material that is composed of solid particles and a plastic binder. The invention also includes the process for producing such a dressing roll.