Method and machine for determining a space coordinate of a measurement point on a measurement object
First Claim
1. A method for determining at least one space coordinate of a measurement point on a measurement object, comprising the steps of:
- approaching the measuring point with a probe head arranged on a displacement mechanism which comprises a first and a second movable support, determining a first displacement position of the first support and determining a second displacement position of the second support, determining an actual difference value between the first and the second displacement positions, providing a static difference value which represents a static difference between the first and the second displacement positions, subtracting the static difference value from the actual difference in order to obtain a dynamic difference value, and determining the space coordinate of the measurement point as a function of the dynamic difference value.
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Accused Products
Abstract
A measurement point is approached with a probe head arranged on a displacement mechanism having at least two supports. An actual difference value between the displacement positions of a first and a second support is determined. A static difference value representing is provided and subtracted from the actual difference, in order to obtain a dynamic difference value representing a static difference between the first and the second displacement positions is subtracted from the actual difference value in order to obtain a dynamic difference value. The space coordinate of the measurement point is determined as a function of the dynamic difference value.
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Citations
15 Claims
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1. A method for determining at least one space coordinate of a measurement point on a measurement object, comprising the steps of:
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approaching the measuring point with a probe head arranged on a displacement mechanism which comprises a first and a second movable support, determining a first displacement position of the first support and determining a second displacement position of the second support, determining an actual difference value between the first and the second displacement positions, providing a static difference value which represents a static difference between the first and the second displacement positions, subtracting the static difference value from the actual difference in order to obtain a dynamic difference value, and determining the space coordinate of the measurement point as a function of the dynamic difference value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A coordinate measuring machine for determining at least one space coordinate of a measurement point on a measurement object, comprising
a displacement mechanism having a first and a second movable support, a probe head arranged on the displacement mechanism for approaching the measuring point, a first and a second measuring instrument for determining a first displacement position of the first support and a second displacement position of the second support, an actual difference formation unit for determining an actual difference value between the first and second displacement positions, a memory for permanently storing and providing a static difference value representing a static difference between the first and second displacement positions, and a calculation unit for determining the space coordinate of the measurement point, the calculation unit comprising a subtractor for subtracting the static difference value from the actual difference value in order to obtain a dynamic difference value, and configured to determine the space coordinate as a function of the dynamic difference value.
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15. A computer program product comprising program code configured for carrying out a method, when executed on a processor of a coordinate measuring machine, comprising the following steps:
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approaching the measuring point with a probe head arranged on a displacement mechanism which comprises a first and a second movable support, determining a first displacement position of the first support and determining a second displacement position of the second support, determining an actual difference value between the first and the second displacement positions, receiving a static difference value which represents a static difference between the first and the second displacement positions, subtracting the static difference value from the actual difference value in order to obtain a dynamic difference value, and determining the space coordinate of the measurement point as a function of the dynamic difference value.
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Specification