The method and the device are used for processing a shaft of an apparatus which supports the shaft in rotation. The device is provided with a drive unit which can be attached to the apparatus and has a drive element that can be driven in rotation by a motor and is suitable for coupling to an end of the shaft to be machined. The device also has a holding unit, which can likewise be attached to the apparatus, for at least one of the following units: a supporting bearing unit for supporting the shaft 464 to be machined; a material removal unit for removing material from the shaft to be machined at its bearing point; a material application unit for applying material to the shaft to be machined at its bearing point; and a grinding unit for grinding down the material applied to the bearing point of the shaft to be machined.

The supporting bearing unit, the material removal unit, the material application unit and the grinding unit are operable during rotation of the shaft to be machined by means of the drive unit.

The method and the device are used for processing a shaft of an apparatus which supports the shaft in rotation. The device is provided with a drive unit which can be attached to the apparatus and has a drive element that can be driven in rotation by a motor and is suitable for coupling to an end of the shaft to be machined. The device also has a holding unit, which can likewise be attached to the apparatus, for at least one of the following units: a supporting bearing unit for supporting the shaft 464 to be machined; a material removal unit for removing material from the shaft to be machined at its bearing point; a material application unit for applying material to the shaft to be machined at its bearing point; and a grinding unit for grinding down the material applied to the bearing point of the shaft to be machined.

The supporting bearing unit, the material removal unit, the material application unit and the grinding unit are operable during rotation of the shaft to be machined by means of the drive unit.

A device for producing a curved lateral surface on a rolling element for a rolling bearing includes a grinding apparatus for grinding the curved lateral surface and a retaining apparatus having a control wheel with a convexly profiled peripheral feeding surface for retaining the rolling element during the grinding. The retaining apparatus may include a plurality of control wheels. The control wheel or the convexly profiled peripheral feeding surface may be formed from a ceramic, a resin-bonded synthetic, or a metallic material. The device may include a dressing apparatus for profiling the convexly profiled peripheral feeding surface of the control wheel.

The present invention relates to several systems and methods for clamping, machining, inspecting, and/or correcting workpieces in an integrated machine.

A grinding machine includes a manual rotating handle provided with a rotation detector that outputs a rotation detection signal so that the position of a grinding wheel with respect to a workpiece can be relatively moved in accordance with the rotation detection signal. The grinding machine further includes a grinding wheel, a moving apparatus that moves the position of the grinding wheel with respect to a workpiece W, a proximity detector that outputs a proximity detection signal corresponding to a relative position or a relative distance between the workpiece and the grinding wheel, a manual rotating handle provided with a rotation detector, and a control apparatus that controls the moving apparatus based on the rotation detection signal. The manual rotating handle is provided with a rotational-torque varying apparatus. The control apparatus controls the rotational-torque varying apparatus based on the proximity detection signal.

A grinding machine includes a manual rotating handle provided with a rotation detector that outputs a rotation detection signal so that the position of a grinding wheel with respect to a workpiece can be relatively moved in accordance with the rotation detection signal. The grinding machine further includes a grinding wheel, a moving apparatus that moves the position of the grinding wheel with respect to a workpiece W, a proximity detector that outputs a proximity detection signal corresponding to a relative position or a relative distance between the workpiece and the grinding wheel, a manual rotating handle provided with a rotation detector, and a control apparatus that controls the moving apparatus based on the rotation detection signal. The manual rotating handle is provided with a rotational-torque varying apparatus. The control apparatus controls the rotational-torque varying apparatus based on the proximity detection signal.

A substrate treatment apparatus including an eccentricity correction unit correcting eccentricity of a substrate supported by a support unit, the substrate treatment apparatus includes a first correction unit including a first contact portion in contact with a plurality of points of a side surface of the substrate having a notch formed in a periphery thereof, and a first drive unit configured to move a position of the substrate such that a center of the substrate corresponds to a center of the support unit, and a second correction unit including a second contact portion in contact with the other side surface of the substrate having the notch formed in the periphery thereof, a second drive unit configured to change a position of the second contact portion, and an elastic portion configured to provide elastic force in a direction of movement of the second contact portion to press or depressurize the substrate.

A substrate treatment apparatus including an eccentricity correction unit correcting eccentricity of a substrate supported by a support unit, the substrate treatment apparatus includes a first correction unit including a first contact portion in contact with a plurality of points of a side surface of the substrate having a notch formed in a periphery thereof, and a first drive unit configured to move a position of the substrate such that a center of the substrate corresponds to a center of the support unit, and a second correction unit including a second contact portion in contact with the other side surface of the substrate having the notch formed in the periphery thereof, a second drive unit configured to change a position of the second contact portion, and an elastic portion configured to provide elastic force in a direction of movement of the second contact portion to press or depressurize the substrate.

A wire billet butt-welding apparatus and a wire billet butt-welding method, the method including: S1: preparing a stock, S2: rotating a butt-welding stock receiver to a stock receiving position, and feeding a first coil of wire billet to a stock receiving rod of the butt-welding stock receiver; S3: welding the first coil of wire billet and the second coil of wire billet on a rotary plate at the butt-welding position end-to-head; S4: rotating the butt-welding stock receiver and the second coil of wire billet to the stock receiving position; S5: rotating the stock receiving rod to rotate to tighten the wire billet between the first coil of wire billet and the second coil of wire billet; and S6: repeating steps S3 to S5 to complete butt-welding operations on the 3.sup.rd to n.sup.th coils of wire billet sequentially.

Through the following steps (a) and (b), the side surface of a grinding object is ground to manufacture a ground product having a smaller diameter than that of the grinding object. In the step (a), a cup type grinding stone is disposed such that the central axis is parallel offset from a state where the central axis is orthogonal to the central axis of the grinding object. In the step (b), the cup type grinding stone is axially rotated so that the cup type grinding stone grinds the side surface of the grinding object while the grinding object is axially rotated and moved in the axial direction. Thereby, the outer peripheral surface of the grinding object is finish-ground by the bottom grinding stone portion of the cup type grinding stone while the grinding object is rough-ground by the side grinding stone portion to obtain a ground product.