Method and apparatus for determining geometrical dimensions of a wheel
First Claim
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1. A method for maintaining and repairing wheels, comprising the steps of:
- pivoting a pivot member, upon which is mounted at least one sensing device for scanning a wheel surface or a part of the wheel surface and accelerometer means measuring accelerations in two predetermined orthogonal directions, about a pivot axis in a plane perpendicular to the wheel axis,scanning, with the sensing device, the wheel surface or a part of the wheel surface during the pivoting motion of the pivot member,measuring, with the accelerometer means, accelerations of the sensing device in two predetermined orthogonal directions during the pivoting motion of the pivot member,determining the angular position of the at least one sensing device from the measured accelerations, by computing means, anddetermining the geometrical dimensions of the scanned wheel surface in dependence of the angular position, by the computing means,wherein the determined geometrical dimensions are used to perform wheel balancing.
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Abstract
Method and apparatus for determining geometrical dimensions of a wheel, especially a vehicle wheel, or of at least a part of the wheel, comprising the steps of pivoting at least one sensing device for scanning the wheel surface or a part of the wheel surface about a pivot axis in plane perpendicular to the wheel axis and determining the geometrical dimensions of the scanned wheel surface in dependence from the angular position of the at least one sensing device, wherein the angular position is determined from measured accelerations of the sensing device in two predetermined directions during the pivotal movement of the sensing device.
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Citations
13 Claims
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1. A method for maintaining and repairing wheels, comprising the steps of:
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pivoting a pivot member, upon which is mounted at least one sensing device for scanning a wheel surface or a part of the wheel surface and accelerometer means measuring accelerations in two predetermined orthogonal directions, about a pivot axis in a plane perpendicular to the wheel axis, scanning, with the sensing device, the wheel surface or a part of the wheel surface during the pivoting motion of the pivot member, measuring, with the accelerometer means, accelerations of the sensing device in two predetermined orthogonal directions during the pivoting motion of the pivot member, determining the angular position of the at least one sensing device from the measured accelerations, by computing means, and determining the geometrical dimensions of the scanned wheel surface in dependence of the angular position, by the computing means, wherein the determined geometrical dimensions are used to perform wheel balancing. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for maintaining and repairing wheels, comprising:
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a machine frame having a shaft for mounting a wheel and a substantially parallel bearing for pivotal support, a pivot member supported by the bearing and pivoting about a pivot axis in a plane perpendicular to the axis of the shaft; at least one sensing device mounted on the pivot member for scanning the wheel surface or at least one part of the wheel surface; accelerometer means mounted on the pivot member and measuring accelerations of the at least one sensing device in two predetermined orthogonal directions during its pivotal movement; computing means determining the angular position of the at least one sensing device from the measured accelerations and determining the geometrical dimensions of the wheel in dependence of the determined angular position. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification