Abstract: A trowel (10) is equipped with an optical detector (13) that detects a laser beam (12). The optical detector (13) may be arranged detect the laser beam (12) only when aligned with the laser beam (12). The trowel (10) provides feedback to the user when it detects the laser beam (12) and when it does not. The feedback may be a sound, a light or a haptic feedback. When the trowel (10) is used for constructing a tapered floor, such as in a bathroom, the laser beam (12) may be originated from a laser level (40) arranged on a support (30). The support (30) is positioned inside a floor drain (32), for example a bathroom floor drain (32).

Abstract: Disclosed is a method for calibrating at least one gap sensor, the at least one gap sensor being provided on a magnetic bearing supporting a floating body in a non-contact manner by an electromagnetic force, the at least one gap sensor being configured to detect a gap between the floating body and a reference object that serves as a positional reference for position control of the floating body. The method includes: constructing a transformation formula for transforming an output of the at least one gap sensor into the gap using three or more constraints that are set as conditions for associating the gap with the output of the at least one gap sensor.

Abstract: A measuring device that measures a distance between a first measurement target and a second measurement target. The measuring device includes a CPU that: calculates a first surface shape of the first measurement target based on first measurement data acquired from a first line sensor that emits first laser light to the first measurement target, and calculates a second surface shape of the second measurement target based on second measurement data acquired from a second line sensor that emits second laser light to the second measurement target; transforms at least one of a first coordinate system of the first line sensor and a second coordinate system of the second line sensor, to form a unified coordinate system; and calculates a distance between the first measurement target and the second measurement target in the unified coordinate system.

Abstract: A system may comprise a frame, a pair of rolls with each of the rolls comprising a roll body having opposite ends and a circumferential surface, a plurality of teeth being formed on the circumferential surface, and at least a portion of the circumferential surface being electrically conductive. The roll may also have a roll shaft having end portions extending from the roll body, with each of the end portions extending from one of the ends of the roll body. The system may also comprise roll supports configured to support the rolls on the frame in a manner such that at least one of the rolls is movable to adjust a separation gap between the rolls, a detection apparatus configured to detect contact between the rolls, and a signaling apparatus configured to produce a signal indicating a change in electrical potential is detected by the detection apparatus.

Abstract: The present technology relates to a positioning device, a communication device, and a positioning system that are designed to consume lower amounts of power in a more reliable manner. In a case where the identification information included in a received radio signal is the identification information about the current search target, and the reception intensity of the radio signal exceeds a predetermined value, the positioning device transmits a distance measurement start instruction to the communication device, and carries out measurement of the distance to the communication device. Upon receiving the distance measurement start instruction from the positioning device, the communication device performs measurement of the distance to the positioning device. The present technology can be applied to a positioning system.

Abstract: The present invention concerns a calibration unit (1, 37) for a roller nip gauge. The roller nip gauge has sensors for length or force measurement. The calibration unit (1, 37) comprises an upper part (3) and a lower part (2). The calibration unit (1, 37) has means to place a part acting on a sensor element (26) of a sensor (25) during calibration in parallel with a surface (9) of the calibration unit (1, 37) receiving the sensor (25).

Abstract: A system may comprise a frame, a pair of rolls with each of the rolls comprising a roll body having opposite ends and a circumferential surface, a plurality of teeth being formed on the circumferential surface, and at least a portion of the circumferential surface being electrically conductive. The roll may also have a roll shaft having end portions extending from the roll body, with each of the end portions extending from one of the ends of the roll body. The system may also comprise roll supports configured to support the rolls on the frame in a manner such that at least one of the rolls is movable to adjust a separation gap between the rolls, a detection apparatus configured to detect contact between the rolls, and a signaling apparatus configured to produce a signal indicating a change in electrical potential is detected by the detection apparatus.

Abstract: The present invention provides a gauging jig, for gauging whether projections of first and second rollers, which are disposed in parallel on both sides of a carrying surface of a platform, coincide on the surface. The gauging jig includes a pointer instrument which is provided on a side of the platform and perpendicular to the carrying surface. The pointer instrument has a first end and a second end. The first end is connected to the first roller and intersects with a central axis of the first roller, while the second end extends close to the second roller. With the gauging jig, an operator can promptly and accurately gauge whether the projections of the first and second rollers coincide on the carrying surface. Therefore, gauging time can be saved while times of trial production can be reduced or even omitted, thereby improving the production efficiency and reducing cost.

Abstract: A method and an apparatus are provided to measure a gap between a first and second roll. Moreover, a method and an apparatus are provided to correct the gap to a target distance with a closed loop system. Also, a method and an apparatus are implemented to detect the wear for each roll by using a non-contacting measuring device.

Abstract: A peripheral surface shape measuring apparatus of a roll-like object which measures a peripheral surface shape of the roll-like object such as a magnetic tape bulk roll, comprising a pair of receiving portions on which both ends of a core of the roll-like object are placed, a receiving portion horizontally moving device which moves the pair of receiving portions in an axial direction of the roll-like object, a receiving portion vertically moving device which moves up and down the pair of receiving portions, a position sensor having a probe with a tip urged in a direction of abutting against a surface of the roll-like object to measure the peripheral surface shape of the roll-like object and a sensor moving device which moves the position sensor in the axial direction of the roll-like object.

Abstract: A method and apparatus are disclosed to measure the angular orientation of two surfaces. The device consists of two frames which are aligned to the surfaces. A continuous string is routed between the frames and put under tension. A position indicating instrument on one mounting frame monitors the string position. The frames are then flipped over or switched between surfaces. The string is tensioned a second time. The measured change in string position is used to determine the angular orientation.

Abstract: A device and method is disclosed that measures the angular orientation of one surface to another. The device consists of two frames with defined measuring points. The relative distances between the points are measured and then used to determine the angular orientation of the surfaces relative to each other. The measuring method is adapted for the accurate measurement of very small angular differences. The frames can be adapted to measure the angular orientation of many surfaces that are otherwise difficult to measure. The device is particularly suited to measuring small parallel angular differences between two rolls.

Abstract: A method of measuring a roll diameter of a roll is provided. At first, a step-shaped conical master roll consisting of a plurality of diametrical parts is prepared and then, the diameters of the diametrical parts under predetermined standard temperature are measured. After mounting the master roll on a roll grinder under a temperature condition similar to that surrounding the roll mounted on the roll grinder, a diameter of one diametrical part, of which standard diameter is closest to the roll diameter of the roll, is measured. Next, a difference between the diameter value of the diametrical part and the standard diameter value is calculated as a correction value, so that the roll diameter value of the roll is corrected by the correction value.

Abstract: Disclosed is a roll nip tool for making nip width measurements within a high temperature roll nip. The tool includes a first thin section for inserting into the high temperature roll nip. The first thin section includes a first surface that has a first portion of an electrical circuit formed thereon. The first thin section also includes a second thin member that has a second surface and a second portion of the electrical circuit formed thereon. The first thin member and the second thin member are attached together to form a pocket, and are arranged together such that the first and the second portions of the electrical circuit can be brought together into circuit closing contact within the pocket. The first thin section of the tool further includes a mechanism or suitable means such as pressurized air within the pocket for normally keeping the electrical circuit open by controllably separating the first and the second portions of the electrical circuit.

Abstract: A cylinder positioner apparatus for offset presses and duplicators which provides for rapid and efficient alignment of plate cylinders of single-color and multicolor presses. A detachable adjustment member is placed on printed images and a micrometer adjustment is used to accurately set the instrument for removing vertical misalignment or to change the vertical positioning of the plate cylinders of the press. The positioner can be used on two-color presses, single stations of multi-station color presses and single-color presses.

Abstract: A rolling or continuous casting and rolling mill facility includes a roll set comprising working rolls defining a roll gap therebetween and support rolls, at least one of the working rolls and the support rolls having coaxial reduced diameter barrel portions defining measurement surfaces thereon; a measuring element for determining the roll gap by measuring a distance between the measurement surfaces, comprising a measurement head and a contact-free double sensor positioned on the measurement head; and an element for moving the measurement head between a working position wherein the double sensor is positioned in a rolling plane drawn through axes of rotation of the working rolls and aligned with the measurement surfaces and a rest position wherein the measurement head and double sensor are withdrawn from the rolling plane.

Abstract: A span gap runner for detecting and measuring misalignment of rolls in a continuous caster comprises an elongated member having a middle portion recessed from the bottom surface of the member, a position transducer mounted in an aperture of the member and at the midpoint of the member. The member has end portions adapted to span the distance between a three roll segment from a minimum roll spacing to a maximum roll spacing. Span gap is measured between the surface of the middle roll of the three roll segment and a line or plane tangent to the surfaces of the adjacent two rolls.

Abstract: A gap measurement device includes a first roller and a second roller. The first roller and the second roller define a gap which varies due to thermal expansion and contraction of the rollers. A first optical probe measures a first distance to the first roller and generates a first-distance signal indicative of the first distance. A second optical probe measures a second distance to the second roller and generates a second-distance signal indicative of the second distance. An electronics module generates a gap-width signal indicative of the gap based on the first-distance signal and the second-distance signal. The invention can also measure roller velocity, roller runout, roller registration, and the thickness of liquid on a roller.

Abstract: A gap measurement device includes a first roller and a second roller. The first roller and the second roller define a gap which varies due to thermal expansion and contraction of the rollers. A first optical probe measures a first distance to the first roller and generates a first-distance signal indicative of the first distance. A second optical probe measures a second distance to the second roller and generates a second-distance signal indicative of the second distance. An electronics module generates a gap-width signal indicative of the gap based on the first-distance signal and the second-distance signal. The invention can also measure roller velocity, roller runout, roller registration, and the thickness of liquid on a roller.

Abstract: A method and apparatus for aligning both upper and lower horizontal rolls in a roll stand. More particularly, it relates to a roll stand having horizontal rolls with electromechanical and hydraulic adjustments of the upper roll, and electromechanical adjustment of the lower roll, as well as position sensors associated with the adjustments. The method allows for the automatic adjusting and centering or aligning of the upper and lower horizontal rolls in a such a roll stand.

Abstract: An anti-backlash spline coupling configured to have the identical rotation as a spline shaft with which it is engaged. The coupling includes two plates and tensioning means which bias the rotary movement of each plate against the other. The coupling may be used in a position measuring system to accurately measure the rotation of a workpiece which is subject to both vertical and rotary motion.

Abstract: A method for aligning at least one machine unit (36) on a base (42) comprises the steps of installing alignment markers (28) on the parts (12, 14) of a machine unit (36) to be aligned, and correcting the locations of the alignment markers (28) to effect a correction in the locations of the parts (12, 14) on which they are installed. The alignment markers (28) are installed in positions which have precise relationships to the positions of function specific openings (20) in the parts (12, 14) which are preferably formed in metal cutting machining. A correction in the locations of the alignment markers (28) thus effects a correction in the locations of the function specific openings (20). The alignment markers (28) enable an alignment of parallel parts (12, 14) of a single machine unit (36) as well as alignment of several machine units (36, 38, 40) arranged one after the other in series.

Abstract: A roll monitor sled data handling system comprising a roll monitor sled and an off-line data handling system. The roll monitor sled consists of a housing having mounted thereon sensors which measure the roll gap and the angle of the rolls. These sensors create analog signals which are converted to digital signals and transmitted to an on-board computer. The processed digital signals include digital signals corresponding to analog signals created when the sensors are in contact with the rolls. The computer processes the digital signals and transmits the processed data to a radio modem. The radio modem transmits the processed digital signals to the off-line data display system. The data display system comprises a receiver modem, a host computer, a digital to analog converter and a display and chart recorder. The selected data is displayed and/or recorded to give the user a "real-time indication" of the critical dimensions of the rolls in a continuous casting machine.

Abstract: An apparatus and method for measuring and machining the roundness and concentricity of an outer surface of a roll having oppositely disposed ends spaced along a longitudinal axis. The apparatus includes a plurality of spaced roll supports for rotatably supporting the outer surface, and one or more drive wheels to rotate the roll about its longitudinal axis. An axial strut is provided for limiting the axial movement of the roll during rotation, and a pair of locators are individually mounted adjacent each of the ends of the roll and establish a reference line along the roll. A plurality of displacement monitoring devices using lasers simultaneously measure variations in the contour of the outer surface and movement of the reference line as the roll is rotated. The apparatus is further designed to determine the true axis of rotation of the roll, whereby a profile of the roll can be obtained by comparing roundness measurements taken at any point along the longitudinal axis to the true axis of rotation.

Abstract: Device for setting of the position of the cylinders of a rolling mill whose gripping is regulated by hydraulic jacks. The device essentially comprises a tubular sleeve which surrounds a measuring rod, making no contact therewith, and moves in the same manner as the latter, being fixed to one of the elements of the hydraulic jack for gripping the cylinders of rolling mills, and sliding in an aperture pierced in the other element of the jack.

Abstract: The invention concerns a measuring device for measuring the diameter of a rotationally symmetric body, for instance a roll, with a measuring jaw that wraps around the peripheral surface of the body and features two arms, and with two styli of which each is arranged on the free end of an arm for scanning the peripheral surface. The invention is characterized by the following features: the arms have an essentially straight-line design and the arms are constructed of rails which form a parallelogram with each other and permit swiveling in the sense of setting or retracting the respective stylus on or from the peripheral surface.

Abstract: A gap monitor for rolls of a continuous casting machine characterized by sets of rolls disposed in opposed pairs separated by spaced gaps and defining a path of travel for a workpiece, each roll comprising aligned roll segments, a roll gap monitor including a housing having one side retractably movable from the housing to contact rolls so that the other side of the housing also contacts the corresponding rolls. The one side is coextensive with the housing and is spring biased outwardly to contact the aligned roll segments. The monitor also comprises a gap sensor extending between opposite sides of the housing and having opposite ends engageable with the opposite pairs of rolls successively as the monitor moves through the path of travel. Transducer means are operatively connected to the gap sensor for transmitting signals representative of measurements of the gaps of each pair of rolls.

Abstract: The invention relates to an arrangement for measuring the relative distance of closely adjacent objects, in particular for measuring and adjusting the distance between a printing head and a roller in needle printers, in which the chamber of a distance measuring sensor filled with liquid, which chamber is bounded by a diaphragm-like wall, is reduced in volume by deflection, while a part of the liquid escapes into an ascending conduit visible from the outside. This arrangement can be particularly readily manipulated in that the distance measuring sensor (1) comprises a rigid base layer (4), to which a solid intermediate layer (5) is applied, which has recesses for forming the chamber and the ascending conduit adjoining an opening of the chamber (7), which are closed by the rigid base layer (4) and a rubber-elastic at least partly transparent covering layer (6).