Machine tool with an optical measuring device for three dimensional registration between the tool holder and the work holder
AssigneeLdi Finances
InventorsPhilippe Jacot, Sebastien Laporte, Frederic Perret
Life of this patent
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Abstract
A machine-tool including a machining module equipped with a tool-holder and a work-holder, and an optical measuring device-for the three-dimensional measurement of the relative position between the tool-holder and the work-holder. The optical measuring device includes an optical system mounted on the work-holder and a target mounted on the tool-holder. The target includes a useful face forming a positioning reference that can be placed in the optical axis of the optical system.
Claims31
Machine-tool comprising a machining module equipped with a tool-holder and a work-holder, and an optical measuring device for the three-dimensional measurement of the relative position between said tool-holder and said work-holder, said optical measuring device comprising an optical system with an image acquisition system, mounted on the work-holder and a target mounted on the tool-holder and comprising a useful face forming a positioning reference that can be placed in the optical axis (O) of the optical system, wherein said optical measuring device is configured to make it possible, through a single step of exposure of the target by the optical system, to determine the three-dimensional relative position between the holder of the workpiece to be machined and the tool-holder.
Method for three-dimensional optical measurement according to three orthogonal directions X, Y and Z in the three-dimensional space of a machine-tool, between a tool-holder and a work-holder that are aligned and remote from one another in the main direction Z, wherein:
- an optical system is provided with an image acquisition system,
- said optical system is mounted on the work-holder,
- a target is provided comprising a useful face forming a positioning reference,
- said target is mounted on the tool-holder,
- the tool-holder and the work-holder are positioned such that the target can be placed in the optical axis (O) of the optical system,
- a single step of exposure of the target is performed with the optical system positioned so as to cooperate with the target, whereby the three-dimensional relative position between the holder of the workpiece to be machined and the tool-holder is determined.
Dependencies are inferred from the claim text.