Abstract:
When detecting a tolerance of a shape of a measured object having a complicated shape that makes it difficult to perform a continued measurement, a plurality of partial measurement data that are set are retrieved. Next, a reference position is set from first partial measurement data. Then, each of the partial measurement data is combined into one data using the reference position. Further, the tolerance is calculated using the combined data.
Abstract:
A profile measuring instrument usable to perform a rotary scanning measurement and a linear scanning measurement on a workpiece in the form of a revolution solid, includes: a turntable on which the workpiece is mounted, the turntable being rotatable around a predetermined rotation axis; a rotary scanning measurement unit being adapted to measure a displacement of a surface of the workpiece mounted on the turntable; a linear scanning measurement unit being adapted to measure a profile of the surface of the workpiece mounted on the turntable along a predetermined measurement axis; and an aligning mechanism being adapted to relatively move the linear scanning measurement unit and the turntable in a direction intersecting with the measurement axis. The linear scanning measurement unit and the turntable are adjusted to relative positions at which the measurement axis passes through the rotation axis.
Abstract:
The apparatus of measuring a workpiece according to the present disclosure includes a base, a measuring member, an upper arm member, a lower arm member, a first pin and a second pin, wherein the upper arm member includes an upper rotation frame and the lower arm member includes a lower rotation frame. When the first pin is moved to disconnect the upper rotation frame from the lower rotation frame, the upper rotation frame is rotatable. When the second pin is moved to lock the lower rotation frame to the measuring member, the lower rotation frame is free of rotation. When the first pin is moved to connect the upper rotation frame and the lower rotation frame with each other and when the second pin is moved to unlock the lower rotation frame from the measuring member, the lower rotation frame is rotatable with the upper rotation frame.
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:
A spherical-form measuring apparatus includes a turntable 5, a holding unit 10 for holding the sphere 20, and a probe 6 for measuring a contour of a sphere part 22 of the sphere 20. The holding unit 10 includes a base part 12, a vertical holding part 14 and an inclined holding part 16 which are placed at separate positions on the base part 12. The vertical holding part 14 holds the stem part 24 of the sphere 20 with it set in a direction perpendicular to the turntable 5. The inclined holding part 16 holds the stem part 24 with it set in a direction at an angle. The vertical and inclined holding part 14, 16 are disposed such that their axial lines meet at an intersection point P and such that the distance from the point P to the vertical holding part 14 agrees with the distance from the point P to the inclined holding part 16.
Abstract:
A measuring device for in-process measurement of test pieces during a machining operation on a machine tool, in particular a grinding machine, has a base body, and a measuring head movable between a neutral position and a measuring position and which is connected to the base body via a rod assembly which is configured and set up in such a way that the measuring head in the measuring position follows orbital rotations of a test piece about a rotational axis. The measuring head has a measuring sensor which is deflectable along a linear axis for recording measured values during a measuring operation. A control apparatus is provided for controlling the measuring operation. The control apparatus is configured and set up in such a way that the measuring device may be calibrated in a calibration mode.
Abstract:
A calibration device for gauges for the measurement of the geometrical characteristics of cylinders, such as the diameter, profile, rotundity and eccentricity errors, wherein such gauges include a pair of movable opposing arms equipped with feelers or sensors at their free ends, includes a pair of abutments reciprocally approachable and/or withdrawable by means of motors until a sample measure is obtained, as desired, within the measuring range of the gauge, on which the calibration device is assembled, revealed by means of measuring means cooperating with the abutments, such that consequently the feelers or sensors are respectively abutted or approached to the abutments to reveal the sample measure.
Abstract:
An exemplary surface geometry characters measuring gauge includes a chassis, a spindle, a locating assembly, and a micrometer. The spindle is rotatably mounted on a surface of the chassis. The locating assembly is mounted on the spindle and structured and arranged for fastening a workpiece on the spindle. The micrometer is attached on the chassis corresponding to and spaced from the spindle. The micrometer is configured for contacting a surface of the workpiece and measuring one or more surface geometry characters of the workpiece.
Abstract:
A spherical-form measuring apparatus 10 which efficiently measures the sphericity and the form of a sphere to be measured with use of the mechanism of a roundness measuring machine, including: a turntable 14; a probe 22 for measuring a contour of a sphere to be measured on an equatorial plane parallel to a surface of the turntable 14, associated with rotation of the turntable 14; and a holding unit 24 mounted on the turntable 14, for holding the sphere to be measured 30; wherein the holding unit 24 positions the center of the sphere to be measured 30 on a rotational axis of the turntable 14, and holds the sphere to be measured 30 so that the sphere is rotatable about an inclined axis which passes the center of the sphere and is inclined at the angle in the range of −5 degrees-+5 degrees centered on the angle where the sine is 1√3 (1 divided by the square root of 3) against the surface of the turntable 14.
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.