Coordinate positioning machine
AssigneeRenishaw PLC
InventorsJulius Benjamin DUPREZ, Jean-Louis GRZESIAK
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Abstract
A method determines an offset of a feature associated with a tool, where the offset is defined relative to a first part of a machine to which the tool is coupled. The method is characterised by determining the offset from: (a) values for the position and orientation of the first part relative to a second part of the machine for each of a plurality of sensed states in each of which the feature is in a sensed position; and (b) information relating to where the sensed positions are relative to one another. A particularly beneficial example is disclosed in which the method is used to determine the tool centre point of a measurement probe supported on a robot arm using an artefact placed in the working volume of the robot arm.
Claims27
A method of determining an offset of a feature associated with a tool, the offset being defined relative to a first part of a machine to which the tool is coupled, in which method the offset is determined using:
- (a) values for the position and orientation of the first part relative to a second part of the machine for each of a plurality of sensed states in each of which the feature is in a sensed position;
- and (b) information relating to where the sensed positions are relative to one another.
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Dependencies are inferred from the claim text.