Abstract: A device and a method can be utilized to measure concentricity of an internal toothing of a component. Such a device may include a determination segment, which can determine a concentricity deviation, that includes a spindle unit comprising a tapping spindle with a gauge gear wheel arranged thereon and intended for tapping the concentricity of the internal toothing, and an output spindle for transmitting the tapped concentricity from the tapping spindle to a measuring unit. The output spindle may be arranged directly or indirectly on the tapping spindle. A spindle holder may hold and position the tapping spindle, the output spindle, or the spindle unit. An adjusting element may position the gauge gear wheel, and the measuring unit may compare the tapped concentricity with reference values.

Abstract: A device used in a spindle or fixture to measure tool sizes. The device has two cylindrical shapes that have precision machined surfaces. The device's face has a precise size which is the same nominal size as that of a material removing tool. The device's shaft allows for concentric and precision fastening of the device to a spindle or a fixture. The nose of the device is located on the end of the larger of the two cylindrical shapes which is visible exposed when mounted and used. The end of the device is at the end of the smaller of the two cylindrical shapes which is hidden after mounting. The device allows more accurate programming of machine tools thus providing higher quality results on machined work pieces and reducing machining cycles.

Abstract: In order to ascertain the placement of a rotation drum relative to the shaft axis of a spindle assembly, an alignment ascertaining device according to the present invention comprises a body portion made mountable on a mounting surface formed horizontally on the spindle assembly, the body portion having a guide face in the direction at right angles to the mounting surface; a linear guide portion mounted in an upward and down ward direction on a guide face; a slider mounted via a rolling member to the linear guide portion, the slider made movable in a direction in which the linear guide portion is installed; an arm member whose proximal end portion is attached to the slider and whose distal end portion extends toward the rotation drum; and a dial gauge mounted on the distal end portion of the arm member.

Abstract: A system for mounting at least one solar panel on a building may include at least one panel mounting bracket including a base to be positioned on the building, a vertical extension having a proximal end coupled to the base and a distal end vertically spaced apart from the base, and a first lateral extension carried on an exterior surface of the vertical extension. The system may further include an adjustable height extension device for the at least one panel mounting bracket including a lower portion, an upper portion carried by the lower portion to be connected with the at least one solar panel, a second lateral extension carried by the upper portion and vertically aligned with the first lateral extension, and a height adjustment screw including a head carried by the upper portion to set a vertical height of the upper portion.

Abstract: A testing device includes a position assembly, a benchmark assembly, and a measuring assembly. The position assembly includes a fixing base and a position member movably mounted on the fixing base. The benchmark assembly includes a mounting base oppositely configured to the fixing base, and a benchmark member rotatably positioned on the mounting base. The measuring assembly is positioned on the mounting base. The benchmark member includes a rotating portion and a locating portion coaxially connected with the rotating portion, the rotating portion is movably received in the mounting base, the locating portion protrudes from the mounting base and facing the position member. The measuring assembly includes a loading member movably positioned on the mounting base and a gauge mounted on the loading member.

Abstract: A test device for testing concentricity between first and second holes in parallel plates includes a positioning pole and a test pole. The positioning pole includes a head segment having a tapered positioning portion. The positioning pole axially defines a through hole. The test pole is telescopically received in the through hole of the positioning pole. The test pole includes a test head with a diameter slightly less than a diameter of the second hole. The positioning portion of the positioning pole extends into the first hole with the conic section of the positioning portion abutting against an inner wall bounding the first hole. The test head of the test pole faces the second plate and approaches and confirms the concentricity of the hole in the second plate by sliding the test pole relative to the positioning pole.

Abstract: A method and apparatus for measuring runout of using a distance measuring sensor mounted to a rotor and targeted at a circular wall, an electronic inclinometer mounted within a diameter of a hub of the rotor, and a microcontroller in data communication with the inclinometer and the sensor. A computer may be operably connected to the microcontroller and used for programming the microcontroller. A rotatable fixture including a bar mounted to the hub may be used to mount the sensor to a distal end of the bar and the microcontroller and the inclinometer may be mounted on the bar. Runout of a fan shroud circumscribing fan blades of an engine rotor may be measured with the apparatus and method and the bar angularly located between a pair of adjacent blades. The computer may be used to gather data from inclinometer and sensor and calculate runout.

Abstract: A system and method for measuring concentricity between a first component and a second component is provided. The system includes a fixture having a first spring element and a second spring element. The first spring element is configured to apply force in an orthogonal direction to the second spring element. A sensor is mounted to the fixture, and the sensor is configured to measure a distance to the second component. The fixture is configured to slide substantially inside a groove of the first component.

Abstract: A test device for testing concentricity between first and second holes in parallel plates includes a positioning pole and a test pole. The positioning pole includes a head segment having a tapered positioning portion. The positioning pole axially defines a through hole. The test pole is telescopically received in the through hole of the positioning pole. The test pole includes a test head with a diameter slightly less than a diameter of the second hole. The positioning portion of the positioning pole extends into the first hole with the conic section of the positioning portion abutting against an inner wall bounding the first hole. The test head of the test pole faces the second plate and approaches and confirms the concentricity of the hole in the second plate by sliding the test pole relative to the positioning pole.

Abstract: An apparatus for the industrial measurement of bores in a measurement object is provided. The apparatus includes a measurement probe which can be introduced into the bore and at which at least one distance sensor is provided with which the instantaneous distance of a reference point of the measurement probe from a wall of the bore can be determined. The measurement probe is rotatably supported at a holder which is fixed with respect to the measurement object and/or whose position relative to the measurement object is known. An evaluation device receives a number of sequentially determined distances in the course of a rotation of the measurement probe.

Abstract: A test device for testing whether an axis of a first portion of an article is coaxial with an axis of a second portion of the article includes a supporting member, a benchmark member fixed to a first end of the support member, and a test member slidably received in a second end of the supporting member opposite to the first end. The benchmark member includes a first test portion to position the first portion of the article that are coaxial within a coaxial tolerance. The test member includes a second test member coaxial with the first test portion. If the second portion is capable of being positioned to the second test portion, the article is qualified. If the second portion is incapable positioned to the second test portion, the article is unqualified.

Abstract: A method and apparatus for measuring diameters of holes and countersinks. A tip of a countersink measurement system may be moved to engage a countersink for a hole. A diameter of the countersink may be measured in response to the tip of the countersink measurement system engaging the countersink. A probe may be moved through the tip of the countersink measurement system into a channel for the hole, while the tip is engaged with the countersink. A number of diameters for the channel may be measured as the probe moves in the hole.

Abstract: A circularity measuring apparatus includes: a rotary table on which a measured object is loaded; a contact-type stylus configured to contact a substantially circular measured surface of the measured object with an inclination; a holder configured to hold the stylus within a predetermined stroke range so that an inclination angle of the stylus is changeable; a displacement detector configured to detect a displacement of the inclination angle of the stylus, which is caused due to a contact between the stylus and the measured surface; and a controller configured to: estimate a position of a top end of the stylus based on an output of the displacement detector; and instruct the holder in an optimal stroke range in the position.

Abstract: A method for measuring concentricity of one cylindrical member arranged in a second cylindrical member includes the steps of inserting a tool in the second cylindrical member, moving a first set of elements carried by the tool into engagement with the inner surface of the bore, establishing a “zero” position for the first set of elements, measuring for each element the distance of movement from the “zero” position of that element to the position where that element engages the inner surface of the bore. The method further entails adjusting the position of first cylindrical member relative to the second member within a tolerance range based on the distances measured from the “zero” positions.

Abstract: A roundness measuring device includes: an eccentric position calculation unit calculating, based on a measured distance and a measured angle, a distance between a axis of the measured object and a rotation axis as an eccentric distance, and calculating an angle formed between the detection line and a line segment connecting the rotation axis and the axis of the measured object as an eccentric angle; and a measurement correction unit correcting the measured distance based on the eccentric distance, the eccentric angle, the measured angle, a radius of the measured object, and a length from the center to the surface of the detector unit, and correcting the measured angle by adding a correction angle to the measured angle, the correction angle being formed between the detection line and a line segment connecting the rotation axis and a contact point where the measured object and the detector unit come in contact with one another.

Abstract: An apparatus for measuring concentricity of two holes at both ends of a cylindrical member includes a rotation unit supporting and rotating the cylindrical member about one of the holes, and an unit measuring the concentricity by measuring a relative position of an inner circumferential surface of the other hole to the center line of the one hole over the whole inner circumferential surface, while the member is rotated. An apparatus for measuring squareness of one end surface of a partition wall between the two holes in the cylindrical member to a longitudinal center line of the one hole includes, in addition to the rotation unit, an unit measuring the squareness by measuring a relative position of the one end surface of the partition wall along the longitudinal center line of the other hole over the whole circumference of the one end surface, while the member is rotated.

Abstract: A checking apparatus, for example a plug gauge, for checking diameters and/or geometrical features of mechanical parts includes a support structure (1) and checking means (20,21) coupled to the support structure, with mutually movable feelers (36) for contacting the surface of the part and transducer means for providing electrical signals. The support structure includes at least two studs (11,12) that achieve a guide along a longitudinal axis, and the checking means are coupled to the studs in a removable and adjustable way along such longitudinal axis. Several checking means can be coupled to the studs. A particular embodiment foresees three flanked studs and checking means coupled to pairs of adjacent studs. An adapting system allows the feelers to self-center on the part to be checked, for example the surface of a hole.

Abstract: An apparatus for automatically measuring the internal and external profile of pipes (1) at the ends thereof is described, wherein sensors (11a, 11b) measure for each angle of rotation of their support (10) the distance of the corresponding profile, there being provided means for regulating in height the axis of rotation of said support, which is rotatably mounted on a slide (13) slidable in a direction parallel to the axis (X-X) of the pipe to be measured. The measuring system also comprises the processing of the detected data in order to attribute a classification code to the end of the measured pipe.

Abstract: Methods and apparatuses for aligning the component parts of a drum assembly are disclosed. One aspect of the invention relates to tools for measuring and aligning the component parts of the drum assembly. By way of example, the tools may include indicator tools for measuring the relative position of the component parts, as well as alignment tools for aligning the component parts in accordance with the measurements. Another aspect of the invention relates to methods of measuring and aligning the component parts of the drum assembly. By way of example, some methods may pertain to aligning the upper drum and/or the drum support of the drum assembly.

Abstract: A device being used for measuring the internal diameter of a pipe, which including a tape mounted into a flat elongated body having holes to allow a string to be pulled out of the flat elongated body. The tape includes hole at a first end for connecting a first end of an elastic band and the string to the tape. The flat elongated body includes a tongue having hole for connecting a second end of the elastic band. The string pulls the tape out of the flat elongated body for measuring the internal diameter of the pipe. The tape includes also hole at a second end for connecting a circular member keeping the device at a right angle in bottom of the pipe when reading the diameter of the pipe with the inspection camera, and also blocking the tape at the input of the flat elongated body when the elastic band bringing the tape into the elongated body.

Abstract: An instrument is adapted to be attached to a rotational member of an instrument station for obtaining information about a workpiece. The instrument includes at least one orifice adapted to be placed in selective fluid communication with a source of fluid. An instrument station may also be provided to include an instrument and a rotational member connected to the instrument for rotating the instrument about a rotational axis. The instrument station may also include a source including fluid, wherein the fluid source is in fluid communication with the instrument and a monitoring apparatus. An apparatus may also include an instrument and a source of substantially incompressible fluid wherein the source is in fluid communication with the instrument. Methods of obtaining information about a workpiece and methods for determining the center of a bore are also disclosed.

Abstract: A system and method of sizing an inner diameter of the center bore of a laminated rotor is provided. The inner diameter of the center bore is determined by taking a series of measurements in the center bore with an electronic gauge and then analyzing the measurements to determine the acceptability of the rotor. The electronic gauge is inserted into the center bore of the rotor and measurements of the inner diameter of the center bore are taken at a variety of different depths and positions using the electronic gauge. The measurements are then analyzed to determine if the rotor is acceptable for use by evaluating the measurements with respect to a reference diameter and a depth in the center bore.

Abstract: Specific pressure and temperature conditions of an engine being measured are achieved by a compressor and a coolant controller, and bore distortion is measured as a gap between a rotation unit and a cylinder wall, wherein the measuring position may be vertically and angularly varied.

Abstract: The present invention provides methods of measuring downhole the curvature of a borehole and, in a particular application of the invention, using the curvature information as an input component of a bias signal for controlling operation of a downhole bias unit in a directional drilling assembly.

Abstract: An apparatus 10 for producing one or more characterizing measurements of a surface 12 in relation to a repeatedly reproducible datum axis A-A, the apparatus 10 comprising a probe 14; a first porous surface 16 located on the probe 14, the first porous surface 16 being in communication with a first source of fluid pressure 18, the first porous surface 16 being located proximate to opposing walls 20 that defines a volume 22, so that a non-contacting fluid pressure gap 24 is formed between the first porous surface 16 and the walls 20, the first porous surface 16 defining the datum axis A-A; at least one second porous surface 26 located on the probe 14, the at least one second porous surface 26 being in communication with a second source of fluid pressure 28, the at least one second porous surface 26 being located in a cooperative relationship with the surface 12 to be measured, so that a non-contacting fluid pressure gap 30 is fanned between the at least one second porous surface 26 and the surface to be measured

Abstract: The present invention provides a fixture, system, and method for automatically and quickly indicating a condition of a the trunnion axis A of a computer numerically controlled (CNC) machine and optionally an alert to a machine operator. The fixture has a body preferably constructed of parallel first and second walls and a third wall disposed between, at right angles to, and connected to the first and second walls all mounted on a base. First, second, and third probe blocks are mounted on the body at first, second, and third angular positions, respectively, along an arc circumscribed by a radius about an axis of rotation. The first, second, and third blocks are mounted on an outer surface of one of the first and second parallel walls, the outer surface facing away from an other of the first and second parallel walls. The blocks include preferably co-planer respective first, second, and third flat surfaces with respective normals parallel to the axis of rotation.

Abstract: An automatic packaging apparatus has an arraying and supplying station, a sorting station and a packaging station. The arraying and supplying station forcibly arrays and supplies encased products to orient their caps in one direction. The sorting station selectively sorts the arrayed encased products to a first feed path for feeding the encased products to package the encased products in a abreast-arrayed attitude and a second feed path for feeding the encased products to package the encased products in a tandem-arrayed attitude. The packaging station automatically packages the encased products by a shrink sheet in the abreast-arrayed attitude or the tandem-arrayed attitude.

Abstract: A method for measuring the diameter and eccentricity of a crankpin of a crankshaft which is ground on a grinding machine. A reference plate is provided on a headstock, which is disposed on a table to support the crankshaft. A measurement apparatus having a probe is disposed on a wheel head. Through movements of the table and the wheel head, the probe is first brought into contact with a reference surface of the reference plate, and is then brought into contact with the outer circumferential surface of the crankpin at outermost and innermost points. The distances between the reference surface and the outermost and innermost points are measured, and the diameter and eccentricity of the crankpin are calculated on the basis of the measured distances and the position of the reference surface.

Abstract: Methods and apparatuses for aligning the component parts of a drum assembly are disclosed. One aspect of the invention relates to tools for measuring and aligning the component parts of the drum assembly. By way of example, the tools may include indicator tools for measuring the relative position of the component parts, as well as alignment tools for aligning the component parts in accordance with the measurements. Another aspect of the invention relates to methods of measuring and aligning the component parts of the drum assembly. By way of example, some methods may pertain to aligning the upper drum and/or the drum support of the drum assembly.

Abstract: An adjustable gage comprises a centerline hub and a swing gage. The hub includes a body with position jaws adjustably attached thereto, and a central post. The gage comprises a pair of parallel slide bars and front and rear blocks slidable along the slide bars. A movable, spring-biased probe is slidably connected to the front block via a rail and carriage bearing apparatus. The probe is operably connected to a probe-movement indicator. The rear block has a fixed probe. Both probes have end roller bearings. In use, the part to be measured is placed within the position jaws, previously adjusted to the approximate inner or outer diameter of the part. Then, the gage is placed over the post, with the roller bearings coming into contact with the part, and the gage is rotated. The probes track along the part, with any variances in part diameter showing up on the indicator.

Abstract: Methods and apparatuses for aligning the component parts of a drum assembly are disclosed. One aspect of the invention relates to tools for measuring and aligning the component parts of the drum assembly. By way of example, the tools may include indicator tools for measuring the relative position of the component parts, as well as alignment tools for aligning the component parts in accordance with the measurements. Another aspect of the invention relates to methods of measuring and aligning the component parts of the drum assembly. By way of example, some methods may pertain to aligning the upper drum and/or the drum support of the drum assembly.

Abstract: A device measures cylindricity of a cylinder having an axial end, a circumference and an inside diameter. The device includes a track for placement at an axial end of the cylinder to be measured. The track extends around the circumference of the cylinder. A pair of trucks are mounded to the track for movement around the cylinder circumference. A sighting beam generator, in particular, a laser, is connected to each truck for aiming sighting beams axially along the inside diameter of the cylinder. A micrometer adjustment is connected between each laser and its truck for adjusting a radial position of each sighting beam.

Abstract: A nominally cylindrical surface of a workpiece is sensed by a stylus displaceable radially of an axis of rotation of the surface relative to a support column defining a reference datum so that the stylus follows the cylindrical surface at a given height along the surface. Relative rotation of the workpiece and the stylus about the axis of rotation of the surface is effected and the displacement of the stylus used to determine information relating to the radial form of the surface at that height. These measurements are represented at different heights along the surface so as to determine its cylindrical form. The displacement of the stylus from a given position on the surface at each height before and after rotation of the stylus and workpiece through 180° are measured and the resulting measurements used to compensate for any error or deviation in the reference datum.

Abstract: A method and a laminated member for measuring the dimension of a gap for passing a card therethrough are provided. A pressure measuring film is superposed on an elastic mat that gradually becomes thinner in the card-inserting direction, and passed through the gap so as to determine the dimension of the gap from the position where the pressure measuring film has started to develop a color. As the elastic mat, one that has a thickness changing in steps may be used. An alternative embodiment uses a pressure measuring board in place of the pressure measuring film, the pressure measuring board having plural pressure sensors for electrically detecting pressures applied in the direction of width.

Abstract: A method and a laminated member for measuring the dimension of a gap for passing a card therethrough are provided. A pressure measuring film is superposed on an elastic mat that gradually becomes thinner in the card-inserting direction, and passed through the gap so as to determine the dimension of the gap from the position where the pressure measuring film has started to develop a color. As the elastic mat, one that has a thickness changing in steps may be used. An alternative embodiment uses a pressure measuring board in place of the pressure measuring film, the pressure measuring board having plural pressure sensors for electrically detecting pressures applied in the direction of width.

Abstract: A sensor arm (1) is inserted into a hole (3). The arm is mounted on a pivot (5) perpendicular to the arm axis so that it may be urged into engagement with the wall of the hole, e.g. by an air cylinder (12). The pivot (5) is in turn rotated about an axis passing through the hole, preferably by means of a rotary body (10). A bearing piece (16) controlling the sensor arm may be moved towards or away from the hole and rigidly supports a light sensor (8) that receives a light beam (7) from the sensor arm. The geometry of the hole is determined on the basis of the position where the light beam impinges on the sensor and the position of the bearing piece relative to the hole.

Abstract: A gage that measures the size and out of roundness of the inside and outside diameters of ring-shaped parts comprises a centerline hub body together with a free style swing gage. The centerline hub body has extensible jaws that can be adjusted to position the body within the central opening of the part. A vertically protruding cylindrical post is located at the center of the hub body and is adapted to interface with the free style swing gage. The free style swing gage comprises a pair of parallel cylindrical rods that are adapted to fit over the centerline post. On each end of parallel rods is disposed a block, each block having a probe that protrudes downward from the block and is operable to contact a surface of the part to be checked. A front block is associated with a dial indicator connected with the probe to indicate any deviations in size or diameter of the part to be checked.

Abstract: An automated data taking and analysis system is used during maintenance overhaul of steam or gas turbines to determine the required position of internal flowpath parts so that the parts may be properly reassembled with appropriate spacing to prevent internal rubbing and resultant wear or damage to the turbine that may affect unit operation or performance. Data is taken by electronic position transducers mounted on a rotatable tube, with the transducers being installed at selected axial locations along the tube where setpoint hard bores and seals reside on flowpath components. The transducers include radially projecting surface-riding portions for contacting the cylindrical flowpath component hard bore or seal. For use with large utility or industrial turbines, the transducers have a linear range greater than 0.80 inch to accommodate relatively large amounts of component ellipticity, tube sag, component misalignment and/or variation.

Abstract: Method of determining variations in the morphology of a borehole. It consists in measuring, as a function of the depth of the borehole, the dip and the azimuth (a.sub.1) of the borehole, the inside diameters of the borehole in two perpendicular directions, and the azimuth (a.sub.2) of a reference caliper and it is characterized in that consists in determining the eccentricity (e.sub.m), together with an eccentricity error (.DELTA.e.sub.m), the azimuth (a.sub.3) of the second caliper from the azimuth (a.sub.2), and the rotation speed (V.sub.R) of the reference caliper, and then comparing (.DELTA.e.sub.m) to a threshold value (.DELTA.e.sub.s) and (V.sub.R) to a threshold value (V.sub.S ) to determine the type of ovalization of the borehole.

Abstract: An apparatus and method for measuring the circularity of a brake drum while the brake drum is mounted upon a vehicle. The apparatus includes a linear voltage displacement transducer mounted upon a stationary portion of the vehicle. The transducer senses the variation of the braking surface and generates a signal proportional thereto. The apparatus also includes an optical encoder that generates a signal indicative of the angular position of the drum. The transducer and encoder are connected to a central processing unit which receives the transducer and encoder signals. The drum is rotated through a plurality of complete revolutions while the central processing unit combines the transducer and encoder signals to generate a set of data points. The central processing unit operates upon the data points to determine the circularity of the braking surface.

Abstract: A measuring system for measuring dimensions of an article such as a bottle has two opposed measuring heads each having a measuring probe, a contact identifying trigger operated by the probe, a base upon which the article to be measured stands, and first and second stepper motor assemblies. The stepper motor assemblies move the measuring heads horizontally and vertically. The base is angularly movable about an axis normal to the plane of the base so as to rotate an article standing on the base so that the different parts of the article are brought into a measuring plane defined as the plane in which the measuring heads move. The measuring probes then measure that part of the article lying in the measuring plane.

Abstract: A tool for checking the required spacing between adjacent fingers of the spud in a control rod drive. The tool is a GO-NO-GO gauge with tight tolerance. The spud finger gauge has two circular cylindrical pins of different diameter. One pin (i.e., the GO pin) has a diameter less than the required spacing between adjacent fingers of the spud. The other pin (i.e., the NO GO pin) has a diameter greater than the required spacing between adjacent fingers of the spud. The spacing is correct if the GO pin passes through the spacing and the NO GO pin does not.

Abstract: A measurement tool and method for measuring the eccentricity of an orifice plate bore in a longitudinal bore of an orifice fitting is disclosed. The measurement tool includes a housing having a first and second plurality of radial bores. At least one ball is inserted in each of the pluralities of radial bores. A first and a second member are rotated to radially force the pluralities of balls outwardly of the housing against the longitudinal bore of the orifice fitting. A head assembly is attached to the housing. An insertion member having a tapered end portion is inserted in the orifice plate bore. A slide member is connected to the insertion member and is slidably mounted in the head assembly. A rod is slidably inserted through the housing and into the head assembly. An arm is pivotally mounted in the head assembly having a first surface in contact with the slide member and a second surface in contact with an end of the rod. An indicator gauge assembly contacts a second end of the rod.

Abstract: A method and apparatus for inserting an eddy current hole probe into a hole specimen and automatically moving the probe in two orthogonal (X, Y) directions in response to the impedance change of an eddy current coil located in the probe as a function of distance from the surface of the hole. The probe is centered in the hole by a system controller which operates to minimize the composite deviation value of the coil impedance. The diameter of the hole is then determined from the average impedance measurement. Following this, a plot of the hole eccentricity is generated by determining the impedance deviation from the average coil impedance value as a function of the angular rotation of the probe in the hole. Measurements of the hole eccentricity for a plurality of hole depths provides an indication of the hole eccentricity profile.

Abstract: An apparatus for the automatic and simultaneous checking of holes comprises plug gauge devices (11-16) with gauging heads (70, 71) and elements for coupling to a support. The coupling elements are substantially constituted by parallel shafts (29-32) displacing the gauging heads (70, 71) from a rest position to a measurement position, and vice versa, through rotational displacements automatically controlled by relevant actuation devices (60-65). The angular position of the shafts is detected by transducers (52-55), which are connected to a processing unit (58) also receiving the signals of the gauging heads (70, 71). The plug gauge devices comprise further heads (86-89) coupled to rotatable rods (82, 83) for simultaneously gauging diametral dimensions of a hole (10) communicating with the other holes (4-9) and transversal to them. The apparatus is particularly adapted for checking the holes of a cylinder block of an internal combustion engine.

Abstract: A unique measuring apparatus designed especially for measuring the interior diameter of cylinder bores. The apparatus includes a divider-like measuring tool that provides both a coarse measurement scale and a dial indicator to enable highly accurate measurements. The device is preferably used in combination with a slotted gauge block that is adapted to rest atop the cylinder bore. The legs of the device include perpendicularly extending support members that rest astride the slot when the device is positioned atop the gauge block. A number of different length removable leg tips are also provided to enable the measurement of cylinder diameters at different heights within the cylinder.

Abstract: A sensor for detecting the location of a hole in a surface of a workpiece. The sensor comprises a sensing head having a probe adapted to engage the portion of the workpiece surface defining a hole. A housing supports the sensing head for lateral displacement in any direction from a longitudinal Z axis of the sensor in response to engagement of the hole-defining portion by the probe. A pair of displacement conversion members are supported in the housing for independent axial displacement along the Z axis corresponding in direction and magnitude to the lateral displacement of the sensing head along X and Y lateral axes, respectively. Sensing devices are disposed to respond to the axial displacement of each of the conversion members to generate a signal indicative thereof.

Abstract: An eccentricity gauge and orifice plate combination which is used to determine the position of an orifice plate located in an orifice fitting serving a pipeline. In a most preferred embodiment the orifice plate is designed to replace the conventional orifice plate in a conventional orifice fitting and is provided with a hub for lengthening the orifice flow opening to accommodate and stabilize the eccentricity gauge. In a first embodiment the eccentricity gauge includes a dowel pin for insertion in the orifice flow opening, a mount which receives the dowel pin, a dial indicator device adjustably carried by the mount and having a spring-loaded contact point positioned for contact with the inside bore wall of the orifice fitting to measure the eccentricity of the contact point path as the eccentricity gauge is rotated about the orifice flow opening.

Abstract: An object is positioned in fixed relation to a measuring axis without regard to centering the object on the axis and at least one series of data samples correlated to the distance between the measuring axis and a series of points located at angularly spaced intervals on at least one surface feature of the object are generated and stored. To determine the center of a first surface feature, the corresponding series of samples is analyzed to identify samples therein corresponding to points lying on a maximum inscribed circle whose center corresponds to that of the surface feature. To measure a second surface feature of an object with reference to the center of a first surface feature thereof, a first signal and a second signal correlated to the distance between the measuring axis and points on the first surface feature and second surface feature, respectively are generated.

Abstract: A probe is an elongated tube with sensors positioned to match the cylinder bores with respect to number and distance apart and having radially projecting contact pins. When employed as intended, the probe rotates and slides back and forth in stationary bearings that are in turn accommodated in uprights in a stand. The probe extends through the bores of the work, which is precisely positioned between the uprights by the same bearings. A drive unit with a driveshaft in alignment with the probe and with motors that operate in conjunction with the latter to generate a translation and a rotation respectively is also mounted stationary in the stand independent of the aforesaid bearings. One end of the probe is coupled to the driveshaft such that it can neither rotate on nor slide axially along it by a universal joint that compensates within limits for angular error and radial shaft displacement.