Abstract: A balancing device for installing a counterweight in a specified shaft balancing region paired with a balancing plane includes a securing device which can be controlled via a control unit. The securing device has a first and a second receiving area for a counterweight or the shaft at a free end. A slot is arranged on the balancing device such that the balancing device can be moved along the shaft in the axial direction. The balancing device has a sensor for ascertaining the position of the balancing device relative to the shaft. The balancing device further includes a display unit which is connected to the control unit so as to exchange data and which is designed such that the position of the balancing device relative to the balancing region can be displayed.

Abstract: A protective housing for a testing, measuring or production device has a protective element, which seals a housing opening and is held and guided by guide devices and can be moved into an open position by a drive device. The guide devices have arched sections which are outwardly curved forward and extend backwards in a straight line on an upper side of the protective housing. The protective element includes two flexurally stiff rectangular plates, which have straight longitudinal sides and a curve approximating the arched sections and are connected to each other on a longitudinal side via a hinge. The guide devices include a number of guide elements guided on a guide rail, wherein a respective guide element is arranged on the hinge and further guide elements are arranged on both sides of the hinge. The drive device drives the rearmost guide element via two traction transmissions, which have traction mechanisms running parallel to the straight section of the guide devices.

Abstract: A balancing device for installing a counterweight in a specified shaft balancing region paired with a balancing plane includes a securing device which can be controlled via a control unit. The securing device has a first and a second receiving area for a counterweight or the shaft at a free end. A slot is arranged on the balancing device such that the balancing device can be moved along the shaft in the axial direction. The balancing device has a sensor for ascertaining the position of the balancing device relative to the shaft. The balancing device further includes a display unit which is connected to the control unit so as to exchange data and which is designed such that the position of the balancing device relative to the balancing region can be displayed.

Abstract: A protective housing for a testing, measuring or production device has a protective element, which seals a housing opening and is held and guided by guide devices and can be moved into an open position by a drive device. The guide devices have arched sections which are outwardly curved forward and extend backwards in a straight line on an upper side of the protective housing. The protective element includes two flexurally stiff rectangular plates, which have straight longitudinal sides and a curve approximating the arched sections and are connected to each other on a longitudinal side via a hinge. The guide devices include a number of guide elements guided on a guide rail, wherein a respective guide element is arranged on the hinge and further guide elements are arranged on both sides of the hinge. The drive device drives the rearmost guide element via two traction transmissions, which have traction mechanisms running parallel to the straight section of the guide devices.

Abstract: A shaft balancing machine for fastening a balancing weight to a shaft has a pincer-like device which includes an upper and a lower pincer unit, wherein each pincer unit is in the form of a two-armed lever. The lever is mounted, so as to be rotatable about a lever center of rotation, on a main body. Each pincer unit has, on a first lever end, a receiving part with at least one receptacle for a balancing weight or a shaft. The levers are connected to one another, at the second lever ends thereof situated opposite the receptacles, by way of a stroke-imparting cylinder. In order that the receptacles can be brought into radial contact with the shaft by way of a stroke of the stroke-imparting cylinder, in each case one guide bar is articulated on the receiving part of each pincer unit and on the main body.

Abstract: Disclosed is a device for attaching corrective weights to a cylindrical outer surface of a rotor by means of electric resistance pressure welding, including an electrode (1) having a contact surface (20) for application against the rotor and comprising a supporting body (2) and a swinging body (6) having oppositely facing, congruent, spherical bearing surfaces (5, 8) suitable for abutting engagement with each other. The swinging body (6) is movably secured to the supporting body (2) such as to be able to perform limited swinging movements to all sides. A spring (14) arranged between the supporting body (2) and the swinging body (6) enables a gap to be produced between the spherical bearing surfaces (5, 8), whereby the contact surface (20) is in a position to align itself relative to the opposite surface of the rotor prior to pressure application by the welding force.

Abstract: To correct an unbalance of rotors, a method and a device are proposed by means of which a corrective weight (15) is adapted to be welded to a rotor (2) by means of an electric welding device (14). The device comprises a robot (20) with a jointed arm (21) mounting the electric welding device (14). Arranged within reach of the jointed arm (21) is an unbalance measuring station (1) for measuring the amount of unbalance of the rotor (2) with an electronic computer which computes a corrective weight (15) to be attached to the rotor (2) for unbalance correction and transmits control data to a control device (23) of the robot (20). Under robot control, the welding device (14) picks the computed corrective weight (15) from a magazine (27) arranged within reach of the jointed arm (21) and welds it to the rotor (2) in the unbalance measuring station (1). During the welding operation the rotor (2) takes support on a first supporting device (11) and the welding device (14) on a second supporting device (12).

Abstract: Disclosed is a device for attaching corrective weights to a cylindrical outer surface of a rotor by means of electric resistance pressure welding, including an electrode (1) having a contact surface (20) for application against the rotor and comprising a supporting body (2) and a swinging body (6) having oppositely facing, congruent, spherical bearing surfaces (5, 8) suitable for abutting engagement with each other. The swinging body (6) is movably secured to the supporting body (2) such as to be able to perform limited swinging movements to all sides. A spring (14) arranged between the supporting body (2) and the swinging body (6) enables a gap to be produced between the spherical bearing surfaces (5, 8), whereby the contact surface (20) is in a position to align itself relative to the opposite surface of the rotor prior to pressure application by the welding force.

Abstract: To correct an unbalance of rotors, a method and a device are proposed by means of which a corrective weight (15) is adapted to be welded to a rotor (2) by means of an electric welding device (14). The device comprises a robot (20) with a jointed arm (21) mounting the electric welding device (14). Arranged within reach of the jointed arm (21) is an unbalance measuring station (1) for measuring the amount of unbalance of the rotor (2) with an electronic computer which computes a corrective weight (15) to be attached to the rotor (2) for unbalance correction and transmits control data to a control device (23) of the robot (20). Under robot control, the welding device (14) picks the computed corrective weight (15) from a magazine (27) arranged within reach of the jointed arm (21) and welds it to the rotor (2) in the unbalance measuring station (1). During the welding operation the rotor (2) takes support on a first supporting device (11) and the welding device (14) on a second supporting device (12).

Abstract: A device for feeding and attaching corrective elements for unbalance correction on propeller shafts in a balancing machine includes an attachment device positionable longitudinally to the rotor axis, with a receptacle for receiving a corrective element attachable to the outer rotor circumference. Associated with the balancing machine is a supply unit supplying corrective elements measured for the individual unbalance correction. A feeding device feeds supplied corrective elements to the attachment device and includes a transfer shuttle for performing reciprocating movements between the supply unit and the attachment device on a guideway parallel to the rotor axis via a controllable motion drive mechanism.

Abstract: The chuck includes a centering clamping member having a variable diameter, a radially extending clamping surface, which is adjacent to the centering clamping member, a movable clamping element, a first spring element, via which the centering clamping member can be moved into a clamping position, a second spring element, via which the clamping element can be loaded with a first force, a third spring element, via which the clamping element can be loaded with a second, higher force, and an axially movable actuating device by which the centering clamping member and the clamping element can be moved into a release position against the force of the first and third spring elements.

Abstract: The method includes the steps of positioning a workpiece with a centering surface on a centering clamping member of a chuck, pressing a radial contact surface of the workpiece against a clamping surface of the chuck with a first force, centering the workpiece by clamping the centering clamping member against the centering surface, and pressing the radial contact surface of the workpiece against the clamping surface of the chuck with a second force, the second force being greater than the first force.

Abstract: Disclosed is a device for feeding and attaching corrective elements for unbalance correction on propeller shafts in a balancing machine, which includes an attachment device adapted to be positioned longitudinally to the rotor axis, with a receptacle for receiving a corrective element attachable to the outer circumference of the rotor. Associated with the balancing machine is a supply unit supplying corrective elements measured for the individual unbalance correction. A feeding device is provided which feeds supplied corrective elements to the attachment device, said feeding device including a transfer shuttle capable of performing reciprocating movements between the supply unit and the attachment device on a guideway parallel to the rotor axis by means of a controllable motion drive mechanism.

Abstract: The method includes the steps of positioning a workpiece (50) with a centering surface (51) on a centering clamping member (32) of a chuck (1), pressing a radial contact surface of the workpiece against a clamping surface (27) of the chuck (1) with a first force, centering the workpiece (50) by clamping the centering clamping member (32) against the centering surface (51), and pressing the radial contact surface (52) of the workpiece (50) against the clamping surface (27) of the chuck (1) with a second force, the second force being greater than the first force.