摘要:
A drive shaft balancing machine for dynamic balancing of drive shafts includes two pedestals. Each pedestal includes a spring-mounted upper part receiving a rotary spindle, a support receiving an end of a drive shaft to be balanced and a first vibration sensor detecting upper part vibrations resulting from an unbalance of the drive shaft and further involved forces in at least a first degree of freedom of motion normal to the spindle axis. On the upper part of at least one pedestal a second vibration sensor is mounted which detects the vibrations of the upper part in at least a second degree of freedom of motion. An evaluating circuit analyzes and links the vibration signals of the first and the second vibration sensors so that pitch vibration excitations of the upper part not caused by the unbalance of the drive shaft do not enter the drive shaft unbalance value computed.
摘要:
A device for the attachment of correction weights for unbalance correction to a rotary body includes a supply unit (15) for supplying individual correction weights, an attachment device (2) for applying the correction weights to the rotary body and including a first receptacle (6) for a first correction weight and a second receptacle (7) for a second correction weight, a feed unit (16) for feeding supplied correction weights to the receptacles (6, 7). The feed unit (16) includes a rotary feeder head (23) which has axially extending feeder elements (26, 27, 28, 29) arranged at a relative distance and forming a slideway (30) for the correction weights and having associated driving devices (34, 35) by which the correction weights are movable longitudinally to the feeder elements (26, 27, 28, 29), wherein in one position of the feeder head (23) a first feeder element (26, 27, 28, 29) is connectable to the first receptacle (6) of the attachment device (2) and a second feeder element (26, 27, 28, 29) is connectable to the second receptacle (7) of the attachment device (2).
摘要:
Disclosed is a drive mechanism for driving a spin test rig, comprising a transmission casing (1) which accommodates a transmission gear unit (8) having a vertical output shaft (10) and an input shaft (9) coaxial therewith. The output shaft (10) has an upper end arranged in the transmission gear unit (8) and a lower end adapted to be coupled to a test object. The transmission casing (1) includes a casing lower part (4) detachable therefrom with the gear unit installed, in which casing part the output shaft (10) is axially and radially carried in bearings (28, 29) at a distance from its ends. The transmission gear unit (8) is configured such that the output shaft (10), together with the casing lower part (4) and the bearings arranged therein, is removable from the transmission casing (1).
摘要:
In order to determine the machining axis of a rotatable workpiece blank, a reference workpiece, which has bearing surfaces concentric to its imbalance reference axis, and subsequently a workpiece blank are received in a measurement device, and as yet unmachined surface regions of the reference workpiece and of the workpiece blank are measured by a sensor device, and the measured position data are stored by a computer as a reference partial surface and a blank partial surface in a data storage device. The computer calculates deviations between the blank partial surface and the reference partial surface and, from these, an imbalance effect which is expressed by the position of the main axis of inertia of a given workpiece. The machining axis is calculated by adding an offset to the position of the main axis of inertia, which offset has been empirically determined with the aid of the actual imbalances of previously produced workpieces measured relative to the machining axis.
摘要:
Disclosed is a method for correcting an unbalance on a vehicle wheel including a rim and a tire, which includes measuring the unbalance of the vehicle wheel in an unbalance measuring station, rotating the vehicle wheel in the unbalance measuring station into a defined angular position and transmitting the defined angular position and the correction data to a control device for controlling an applicator head of a balancing station, transferring the vehicle wheel from the unbalance measuring station to the balancing station by means of a gripper arranged on a handling device and centrally locating and holding it in the balancing station, loading a corrective element which has one side coated with an adhesive and exhibits the weight amount determined in the unbalance measuring station into the applicator head of the balancing station, and rotating the vehicle wheel and/or the applicator head in dependence upon the control device in such a way that the corrective element in the cavity of the wheel rim reaches the correction plane and the attachment location on the attachment surface, and fastening the corrective element by pressing its adhesive-coated side against the attachment surface of the rim.
摘要:
For compensating unbalance of vehicle wheels, adhesive weight elements (8) are positioned and pressed onto a determined compensation surface (17) on a wheel (7) using a balancing head (1) and a program-controlled handling device (9). The adhesive weight elements (8) in the form of an endless weight strand (5) are fed by a feed device (2) arranged on the balancing head (1) to a following roll-on roller (3) that presses the beginning of the endless weight strand (5) onto the beginning of the compensation surface (17) and thereafter rolls along thereon. A length cut-off device (4) is provided in or before the roll-on roller (3) and cuts-off the endless weight strand (5) of the adhesive weight elements (8) in a determined length.
摘要:
In a device for receiving a multi-part constructional unit of a double coupling in a balancing machine there is provided a receiving mandrel which can be driven in rotation about its longitudinal axis and has a bearing face for centering a first coupling part and a centering pin arranged at the free end thereof. The device also comprises a clamping sleeve which can be moved by spring force into a clamping position and has a clamping face coaxial with the longitudinal axis of the receiving mandrel and a centering ring which is arranged on the centering pin, is held releasably thereon, has a centering face for centering further coupling parts and can be coupled in a torque-proof manner with the receiving mandrel in at least one angle position.
摘要:
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. The transfer shuttle includes a loading device configured for performing an active loading operation by displacing a corrective element from a receptacle of the transfer shuttle into the receptacle of the attachment device, said loading device being driven by means of the controllable motion drive mechanism of the transfer shuttle.
摘要:
A device for mounting rotors, in particular articulated shafts, in a balancing machine has a bearing frame and a frame upper part, which is mounted on the bearing frame so as to be able to oscillate via spring bars and includes a spindle for rotatable mounting of a rotor. The frame upper part is mounted on the bearing frame via groups of spring bars, the groups being arranged at a distance from the axis of rotation of the spindle and at a distance from one another, and the longitudinal axes of the spring bars forming the spring bar groups being oriented parallel to the axis of rotation of the spindle. The spring bars forming the spring bar groups have an elongated, slender shape such that their rigidity in an axial direction is at least 100 times, in particular at least 300 times, greater than their radial flexural rigidity.
摘要:
In a rotor bearing arrangement for a balancing machine having a bearing housing (1) which is supported in a radially resilient manner in a highly stiff bearing stand (2) by means of at least two identically configured and arranged spring elements, the spring elements are arranged on opposite sides of the bearing housing (1) so as to be symmetrical about a plane containing the main axis of the bearing and the bearing stand (2) has two supporting arms (11) arranged at a distance from one another, between which the bearing housing (1) is arranged and on which the spring elements are supported.