In order to improve a method for positioning a centre point of a second machine tool unit of a machine tool on a geometric axis of a first machine tool unit of the machine tool, wherein the second machine tool unit has a circular path concentric with the centre point, and wherein the first machine tool unit has a component that is rotatable about the geometric axis, in such a way that said method can be performed by an operator easily, reliably and within a short timeframe, it is proposed that a measuring unit is arranged in a defined manner relative to the geometric axis and the position of the circular path relative to the geometric axis is established using the measuring unit, that the position of the centre point of the circular path in the geometric plane relative to the geometric axis is calculated, and that adjustment paths in the geometric plane, which are associated with the adjustment directions, for positioning the centre point on the geometric axis are calculated, and that the machine tool units are moved relative to one another in accordance with these adjustment paths.

In order to improve a method for positioning a centre point of a second machine tool unit of a machine tool on a geometric axis of a first machine tool unit of the machine tool, wherein the second machine tool unit has a circular path concentric with the centre point, and wherein the first machine tool unit has a component that is rotatable about the geometric axis, in such a way that said method can be performed by an operator easily, reliably and within a short timeframe, it is proposed that a measuring unit is arranged in a defined manner relative to the geometric axis and the position of the circular path relative to the geometric axis is established using the measuring unit, that the position of the centre point of the circular path in the geometric plane relative to the geometric axis is calculated, and that adjustment paths in the geometric plane, which are associated with the adjustment directions, for positioning the centre point on the geometric axis are calculated, and that the machine tool units are moved relative to one another in accordance with these adjustment paths.

A user-configurable template assembly for aligning a plurality of pictures or other objects on a surface comprising a plurality of elongate guide members and a plurality of connector members. Each connector member is configured to engage an end of one or more guide members and maintain the plurality of guide members in an orthogonal array. The template array is ideally configured to align commonly sized pictures in a decorative manner. The guide members and connectors incorporate standardized interface connections providing interchangeability in parts and maximizing template array assembly options.

A user-configurable template assembly for aligning a plurality of pictures or other objects on a surface comprising a plurality of elongate guide members and a plurality of connector members. Each connector member is configured to engage an end of one or more guide members and maintain the plurality of guide members in an orthogonal array. The template array is ideally configured to align commonly sized pictures in a decorative manner. The guide members and connectors incorporate standardized interface connections providing interchangeability in parts and maximizing template array assembly options.

A monitoring module for assembly accuracy between two components includes a first component having an installation surface, and a second component having an opposite surface and disposed in a way that the opposite surface faces towards the installation surface. A preload is continuously applied to at least one of the first and second components to press the opposite surface of the second component on the installation surface of the first component. The installation surface is defined with a reference point. At least two load cell pairs are disposed on the installation surface. Each load cell pair has two load cells located on two sides of the reference point respectively, and the imaginary line connecting the two load cells passes through the reference point. Besides, the load cells are separated from each other without any overlap. The opposite surface is pressed on the at least two load cell pairs.

A method for sensing misalignment of a rotating shaft includes rotating the shaft. A distance from a sensor on the shaft to a first rim of a first coupling mounted to an end of the shaft is sensed as the shaft rotates. A change in the distance from the first sensor to the first rim of the first coupling is determined based on the sensed distance. An angle of the first coupling based on the change in the distance from the first sensor to the first rim of the first coupling during one revolution of the shaft is determined based on the sensed change in the distance from the first sensor to the first rim. An angle of the shaft is determined based on the sensed distance from the first sensor to the first rim of the first coupling representing the sensed change in the distance from the first sensor to the first rim.

A method for sensing misalignment of a rotating shaft includes rotating the shaft. A distance from a sensor on the shaft to a first rim of a first coupling mounted to an end of the shaft is sensed as the shaft rotates. A change in the distance from the first sensor to the first rim of the first coupling is determined based on the sensed distance. An angle of the first coupling based on the change in the distance from the first sensor to the first rim of the first coupling during one revolution of the shaft is determined based on the sensed change in the distance from the first sensor to the first rim. An angle of the shaft is determined based on the sensed distance from the first sensor to the first rim of the first coupling representing the sensed change in the distance from the first sensor to the first rim.

Provided is a method of aligning a gas turbine shaft. The method includes securing a laser sensor to a first shaft of a first rotary component axially connected to a rotor of a gas turbine, and securing a laser generating device to a second shaft of a second rotary component. The second shaft is axially coupled to the first shaft and has a central axis misaligned with respect to a central axis of the first shaft. A jogging assembly coupled to the first rotary component is actuated to rotate the first shaft and the second shaft. Measurements representative of a misalignment of the first shaft and the second shaft are received from the laser sensor, and based on the measurements, a central axis of the first shaft can be aligned with respect to a central axis of the second shaft.

Devices and systems for track tension measurement and alignment of tracked vehicles are provided. In various embodiments, a device for measuring tension on a continuous track is provided, the device comprising a shaft having a hollow cross section, a pin disposed at least partially through an aperture of the top end of the shaft, a compression member disposed within the inner volume of the shaft, and a base having a hollow cross section. In various embodiments, when the base is attached to the outer surface of the shaft at a predetermined height, and the pin is depressed into the inner volume of the shaft at a predetermined distance, the distance between the top end of the pin and an end of the base is known.

Provided are self-retractable centering assemblies and methods of using these assemblies for alignment of parts having determinant assembly alignment holes. An assembly includes a center pin having a threaded portion threadably engaging a drive component. The assembly also includes a puller bushing rotatably coupled to the drive component. The center pin protrudes through the puller bushing and can slide with respect to the puller bushing when the drive component is rotated relative to the center pin. The sliding distance is controlled by a limiter disposed within the cavity of the puller bushing. During operation, a portion of the center pin extends from the puller bushing and is inserted into alignment holes of parts being aligned. The drive component is rotated relative to the center pin resulting in the center pin being pulled out of the alignment holes while the puller bushing is being pressed against the parts.