A masking and coating check inspection tool for inspecting a masking and/or coating edge on a fan blade includes an elongate planar base having distal first and second ends, bottom surface, top face, length, width, and thickness. The length is greater than the width. A pillar perpendicular to the elongate planar base and projecting upward from the top face between the first and second ends has a first end datum, and a first masking check tolerance band disposed on the first end, configured to provide a pass/fail indication of the first masking edge with respect to the first end datum. The pillar can have second end datum and second masking check tolerance band on the second end configured to provide a pass/fail indication of a second masking edge with respect to the second end datum. The inspection tool can be used on root and platform masking/coating edges.

A method of operating a measurement device to check an internal thread of a spark plug bore for proper orientation of a spark plug includes positioning a cylinder head relative to the measurement device and measuring a seat surface z-position. The seat surface is configured to seat the spark plug within the spark plug bore. The method includes measuring at least one set of coordinates. Each set of coordinates is at a major diameter of a corresponding threadform of the internal thread. The method includes determining a pitch of the internal thread. The method includes calculating a thread start location where the major diameter of the internal thread intersects the seat surface based on the coordinates of the at least one set of coordinates, the pitch of the internal thread, and the z position of the seat surface. The method includes comparing the thread start location to a reference location.

A measurement apparatus includes: the first end supporter; the second end supporter; a probe that measures a columnar workpiece supported by the first end supporter and the second end supporter; and a control part that obtains a center and a rotation track of the first end supporter, and a center of the second end supporter when a rotary table rotates and changes the orientation of workpiece coordinate axes based on a rotation position of the rotary table when a measurement of the columnar workpiece by the probe is performed, the workpiece coordinate axes including an axis passing through the center of the first end supporter and the center of the second end supporter.

A test system for examining a hollow body, in particular a cylinder bore in an engine block, comprises a measuring apparatus comprising an elongate body and a plurality of sensors which are connected to the body and are set up to carry out a distance measurement. The test system also comprises electronic control means which are set up to move the measuring apparatus into a hollow body to be examined and to determine an internal diameter of the hollow body on the basis of distance measurement data from the sensors. In order to examine hollow bodies of different diameters, at least some of the sensors are in the form of movable sensors which can be moved relative to the elongate body of the measuring apparatus. The electronic control means are also set up to select a measuring position of the movable sensors relative to the elongate body on the basis of a hollow body to be examined. A calibration station is provided and the electronic control means are set up to carry out a calibration process for the movable sensors. A corresponding method is also disclosed.

Around a crankshaft (S) supported by a support device (10), a first shape measuring device (31) to a fourth shape measuring device (34) are disposed, and the crankshaft (S) and the first shape measuring device (31) to the fourth shape measuring device (34) are relatively movable in an axial direction (X direction) of the crankshaft (S). The first shape measuring device (31) and the third shape measuring device (33) are disposed so as to face to one X direction and acquire partial shape information (including the other side surfaces in the X direction of counterweights (S2)) of the crankshaft S, and further, the second shape measuring device (32) and the fourth shape measuring device (34) are disposed so as to face to the other X direction and acquire partial shape information (including one side surfaces in the X direction of the counterweights (S2)) of the crankshaft S. This makes it possible to accurately inspect a shape of the crankshaft (S) in a short time.

A masking and coating check inspection tool for inspecting a masking and/or coating edge on a fan blade includes an elongate planar base having distal first and second ends, bottom surface, top face, length, width, and thickness. The length is greater than the width. A pillar perpendicular to the elongate planar base and projecting upward from the top face between the first and second ends has a first end datum, and a first masking check tolerance band disposed on the first end, configured to provide a pass/fail indication of the first masking edge with respect to the first end datum. The pillar can have second end datum and second masking check tolerance band on the second end configured to provide a pass/fail indication of a second masking edge with respect to the second end datum. The inspection tool can be used on root and platform masking/coating edges.

An inner-wall measuring instrument includes: a placement surface on which an object to be measured is placed; a base relatively movable with respect to the placement surface in three axis directions orthogonal to one another; a touch probe that is disposed at a first position of the base and brought into contact with the object; an image probe that is disposed at a second position of the base and capable of imaging the object with a direction parallel to the placement surface being an imaging direction; a rotational drive unit that rotates the image probe around an axis extending in a direction perpendicular to the placement surface; a linear drive unit that moves the image probe in the imaging direction; and a calculator that calculates an offset amount between the touch probe disposed at the first position and the image probe disposed at the second position.

The present invention includes a preparatory step of providing a calibration work piece having a flat reflecting surface as a work piece, and arranging the reflecting surface to be parallel to a standard optical axis and orthogonal or parallel to pixel array directions of an image capture element; a rotation step of rotating a prism centered on the standard optical axis; a brightness detection step of detecting the brightness of an image captured by the image capture element at each of a plurality of rotation positions of the prism; and a positioning step of aligning the prism at a rotation position where the brightness detected by the brightness detection step is greatest.

The present application relates to a runout detection device, which includes a base plate, lateral plates, guide sleeves, springs and dial gauges, etc. During the operation, the sliding sleeve and the lateral dial gauge are moved along the sliding groove in the lateral formwork, so that the runout of right end of the work piece may be measured. The bottom plate of the lower end measuring device is placed above the base plate, the ball at the top end of the probe is always in contact with the lower end of the work piece under the action of the upper spring, the probe is pressed down when contacting a projection, and the L-shaped plate is rotated clockwise through the head nail, at this time, the runout of the lower end of the work piece may be known by the reading of the lower dial gauge.

A crankshaft shape inspection method includes: acquiring three-dimensional point cloud data of a surface of a crankshaft S; superposing the three-dimensional point cloud data on a surface shape model of the crankshaft S; moving the three-dimensional point cloud data superposed on the surface shape model to match with a coordinate system used when the crankshaft S is machined; generating an estimated machined surface, which is the surface after machining of a predetermined machining portion of the crankshaft S, in the coordinate system used when the crankshaft S is machined; and calculating a distance between machining portion point cloud data extracted from the three-dimensional point cloud data moved and the estimated machined surface generated and determining a machining stock of the crankshaft S to be insufficient based on the calculated distance.