Abstract:
A workpiece centring assembly comprising a workpiece support surface and sleeve, the workpiece support surface and sleeve being arranged for relative rotation, and jaws arranged for movement with respect to the workpiece support surface to centre the workpiece on the workpiece support surface, further comprising elongate bearings arranged for rotation with the workpiece support surface, slidable members supporting the jaws and arranged for movement along the elongate bearings, and connectors having pivotal couplings to respective slidable members and the sleeve, wherein the relative rotation causes the connectors to pivot about their pivotal couplings to allow movement of the slidable members along the elongate bearings and consequential movement of the jaws with respect to the workpiece support surface.
Abstract:
A system includes at least one body, a link for suspending the body for movement with gravity from a first elevation position to a second elevation position, and an electrical energy generator coupled with the body through the link to drive the generator to generate electricity upon movement of the body with gravity from the first to the second elevation position. The at least one body has a mass of at least approximately 100 tonnes; the first and the second elevation positions define a distance therebetween of at least approximately 200 meters; and/or the system further includes an operator configured to operate the link to controllably move the at least one body against gravity from the second to the first elevation position to increase a gravitational potential energy of the at least one body, and to maintain the gravitational potential energy of the at least one body.
Abstract:
The present invention relates to a method for relatively stabilising the position of a rotating part axis using multi-stepped self-adjusting prismatic supports. The inclinations of the geometrical shape of the cylindrical part are measured using an out-of-round gauge having a first (9), a second (14) and a third (18) measuring sensors fitted therein. The out-of-round gauge is arranged on a mount (12) which is capable of displacement along the rotating part. During the rotation of the part, the sensor (9) is used for measuring the changes in the non-roundness of the profile of the part cross section, while the sensor (14) is used for measuring the radial beating of the centre of the profile average circumference. When the out-of-round gauge moves along the rotating part, the sensor (9) measures the non-roundness of the cross section profiles as well as the changes in the radius of the average circumference of said profiles, while the sensor (14) measures the beatings of the average circumference centres. According to the value of these measures, the geometrical shape of the longitudinal section profile of the part can be determined together with the straightness of the part axis. The correction steady comprises a rocker arm with self-adjusting main supports as well as a secondary support for compensating weight which is mounted on a sliding member. The rocker arm is mounted in the body of the steady so as to be capable of rotation about the axis and of vertical displacement. The main supports are hinged to the axes at the ends of the rocker arm, while the secondary support in made in the shape of analog prism and is mounted on the sliding member. The sliding member is arranged at a given angle relative to the vertical and is mounted so as to be capable of linear displacement within the body of the steady.
Abstract:
Die Erfindung betrifft einen Kipp- und/oder Zentriertisch (200, 300) für eine Messmaschine (100) zur Einstellung einer Lage- und/oder Winkelposition eines Messobjektes (40 in einem Messraum (50). Die Lage- und Winkelposition des Messobjekts (40) relativ zum Messraum (50) ist dabei durch zumindest eine mittelbare Krafteinwirkung auf ein Zentrier- und/oder Kippelement (320, 310) durch zumindest ein Stellelement (331, 332) veränderbar ist. Ferner weist der Kipp- und/oder Zentriertisch (200, 300) zumindest einen ersten und einen zweiten Tischaufbau (11, 12) auf, die relativ zueinander beweglich sind. Auf dem ersten und/oder der zweiten Tischaufbau (11, 12) ist zumindest das eine Stellelement (331, 332) zur Einstellung der Lage- und/oder der Winkelposition des Messobjekts (40) angeordnet. Das Kippelement (310) liegt mit einer ersten Fläche (312) zumindest teilweise flächenbündig auf einer ersten Fläche (322) des Zentrierelementes verschiebbar auf, wobei eine der beiden Flächen (312, 322) ballig und die andere Fläche dazu gegenballig oder dazu konisch ausgeführt ist, derart, dass durch die zumindest mittelbare Krafteinwirkung auf das Kippelement (310) durch das zumindest eine Stellelement (331 eine Kippbewegung des Kippelementes (310) relativ zum Zentrierelement (320) erfolgt, um eine Winkellage des Messobjektes (40) im Messraum (50) zu verändern. Das Zentrierelement (320) liegt mit einer zweiten Fläche (321) zumindest teilweise flächenbündig auf einer Auflagefläche (13) des ersten Tischaufbaus (12) verschiebbar auf, wobei die zweite Fläche (321) des Zentrierelementes (320) und die Auflagefläche (13) des ersten Tischaufbaus (12) jeweils eben ausgeführt sind, derart, dass durch die zumindest mittelbare Krafteinwirkung auf das Zentrierelement (320) durch das zumindest eine Stellelement (332 eine Bewegung des Zentrierelements (320) relativ zur Auflagefläche (13) des ersten Tischaufbaus (12) erfolgt, um eine Positionslage des Messobjektes (40) im Messraum (50) zu verändern.
Abstract:
A technique is provided for detecting the surface profile of a seat pocket (36) of a gate valve. An inspection tool (58) is used to detect data at a plurality of points around the bore (28) of the valve. The inspection tool (58) has a sensor (60) that is moveable between a retracted position and an extended position. The inspection tool (58) is disposed within a valve body cavity (30) with the sensor (60) in the retracted position. The sensor (60) of the inspection tool (58) is then extended outward so that it is located within the portion of the bore (28) of the valve having the surface profile to be detected. The sensor (60) is rotated so that the sensor (60) may obtain surface profile data at a plurality of points around the seat pocket (36) of the valve body (22). The sensor (60) of the inspection tool (58) is connected to a processor-based device (110), such as a computer. The processor-based device (110) processes the data from the sensor (60) and provides it to a user in a form that is recognizable to the user.
Abstract:
An attitude arm mounted to a support arm is rotatable about a pivot. The attitude arm holds a stylus gauge, which generates a signal representing deflection of the stylus in a measurement direction as the stylus follows a surface of a workpiece rotated on a turntable. An attitude switching mechanism allows switching between a first stylus attitude generally aligned with the turntable spindle axis and a second stylus attitude generally aligned perpendicular to the turntable spindle axis. To enable alignment of the measurement direction with the spindle axis, first and second adjusters enable the stylus tip to be moved perpendicular to the spindle axis and the measurement direction when in the first and second stylus attitudes, respectively. An orientation mechanism is provided to rotate the measurement direction of the stylus. A stylus tilt mechanism is provided to tilt the stylus about a tilt axis parallel with the measurement direction.
Abstract:
A linked transport mechanism and method that uses a single source of motive force to synchronously position multiple displaceable sensors of a shape-measuring assembly onto a roll received in a roll grinding machine. At least two sensors (28, 29) are mounted on linear slides on at least one measuring arm (1). The complete shape-measuring assembly includes at least three sensors (27, 28, 29) or measuring points to allow the calculation of the cross-sectional shape of the roll and the extraneous error movement of the roll. At least one measuring arm is connected to a linear guide (4) of the frame (3). The linear motor is connected between the frame and the measuring arms. The linked transport mechanism assures the synchronous accurate positioning of the sensors, each at a fixed angle through the roll center, over the entire range of roll diameters that the grinding machine may receive.
Abstract:
An object (10) is positioned in fixed relation to a measuring axis (36) without regard to centering the object (10) on the axis (36) and at least one series of data samples (101-109) correlated to the distance between the measuring axis (36) and a series of points at angularly spaced intervals on at least one surface feature (14, 17) of the object (10) are used. To determine the center (165) of the first surface feature (14) the samples are analyzed to identify samples (102, 106, 108) corresponding to points lying on a maximum inscribed circle (169) whose center (165) corresponds to the surface feature (14). To measure a second surface feature (17) the center (165) of the first feature (14) is determined to define a vector indicating the positional offset between the measuring axis (36) and center. A second signal (74) is adjusted with that vector to provide a coordinate-corrected signal to be used as a basis for a centered measurement.
Abstract:
A gauge for measuring out-of-roundness of a circular part has a table (40) upwardly from which project 3 posts (72, 74 and 76) arranged substantially at the apices of an equilateral triangle with the post (76) moveable toward and away from an imaginary line extending between post (72) and post (74). A dial indicator (70) is responsive to movement of post (76) to detect out-of-roundness as a part (10) resting on the table and in engagement with the posts is rotated relative thereto.