US 8,037,615 B2 · Process and device for determining the alignment of two rotatable machine parts, the alignment of two hollow cylindrical machine parts or for testing a component for straightness along a lengthwise side

Abstract

A process and a corresponding device for determining the alignment of two rotatable machine parts, the alignment of two hollow cylindrical machine parts or for testing a component for straightness along one lengthwise side, with a first measurement unit with a light source for emitting a light beam which has been expanded in one plane, and a second measurement unit with an optical detector unit which has two linear sensors which are arranged parallel to one another, and with an evaluation unit to evaluate a light pattern which has been produced by the two-dimensionally expanded light beam for determining the misalignment of the axes of the machine parts relative to one another, or optionally, the straightness of the component, by the determination the points of incidence of the two-dimensionally expanded light beam on the sensors.

Claims16

Dependent claims

Process for determining the alignment of two rotatable machine parts with a first measurement unit with a light source for emitting a light beam which has been expanded in one plane, and a second measurement unit with an optical detector unit which comprises two linear sensors which are arranged parallel to one another, comprising the steps of:

mounting the first measurement unit on a first of the machine parts and the second measurement unit on a second of the machine parts,
emitting a light beam which is parallel to a longitudinal axis of the first machine part so as to be incident on the detector unit, said light beam being expanded fan-shaped in a plane transverse to said longitudinal axis and running tangentially to a circle around the axis of rotation,
evaluating the points of incidence of the light beam which has been produced by the two-dimensionally expanded light beam on the two linear sensors which are arranged parallel to one another in a direction orthogonal to said longitudinal axis and crosswise of the direction of expansion of the light beam so that the points of incidence of the expanded light beam produced on the line sensors intersect the two linear sensors in a middle area thereof and then migrate along the linear sensors during rotation of the light source relative to the detector unit, and
determining misalignment of the axes of the machine parts relative to one another based on the evaluation of the points of incidence of the light pattern.

1 more element

Process for determining the alignment of two hollow cylindrical machine parts with a first measurement unit with a light source for emitting a light beam which has been expanded in one plane, and a second measurement unit with an optical detector unit which comprises two linear sensors which are arranged parallel to one another, comprising the steps of:

mounting the first measurement unit in a first of the machine parts axially parallel thereto and the second measurement unit in a second of the machine parts axially parallel thereto,
emitting a light beam which is parallel to a longitudinal axis of the first machine part so as to be incident on the detector unit, said light beam being emitted in a two-dimensionally expanded fan-shaped in a plane transverse to said longitudinal axis and running tangentially to a circle around an axis of rotation at least one of the measurement units,
turning at least one of the measurement units about said axis of rotation axially parallel to said longitudinal axis and during rotation of said at least one of the measurement units, evaluating a light pattern which has been produced by the two-dimensionally expanded light beam on the two linear sensors which are arranged parallel to one another in a direction orthogonal to said longitudinal axis and crosswise of the direction of expansion of the light beam so that points of incidence of the expanded light beam produced on the line sensors intersect the two linear sensors in a middle area thereof and then migrate along the linear sensors during rotation of the light source relative to the detector unit for determining the misalignment of the axes of the machine parts relative to one another, by evaluating misalignment of the points of incidence of the two-dimensionally expanded light beam on the sensors.

Device for determining the alignment of two rotatable machine parts, the alignment of two hollow cylindrical machine parts or for testing a component for straightness along a lengthwise side thereof, comprising:

a first measurement unit with a light source configured for emitting a light beam which has been two-dimensionally expanded in one plane and means for mounting said first measuring unit on a part or component being tested so that the plane of expansion of the light beam is transverse to the longitudinal axis of said part or component,
a second measurement unit with an optical detector unit having two linear sensors which are located parallel to another, and means for mounting said second measuring unit with the parallel sensors oriented crosswise of the plane of expansion of the light beam and
an evaluation unit for evaluating a light pattern produced by the two-dimensionally expanded light beam on said parallel sensors for determining one of misalignment of the axes of the machine parts relative to one another, and straightness of the component, on the basis of points of incidence of the two-dimensionally expanded light beam on the sensors.

Dependencies are inferred from the claim text.

Process and device for determining the alignment of two rotatable machine parts, the alignment of two hollow cylindrical machine parts or for testing a component for straightness along a lengthwise side

Life of this patent

Process and device for determining the alignment of two rotatable machine parts, the alignment of two hollow cylindrical machine parts or for testing a component for straightness along a lengthwise side

Life of this patent

Abstract

Claims16