Method and system for cutting a preform intended for the production of a turbomachine part
First Claim
1. A cutting system of a preform comprising visually identifiable weaving threads, the preform being usable to produce a turbomachine part, the system comprising:
- a cutting machine of the preform;
a memory, in which a reference preform image having a reference weaving thread layout and a pre-calculated cutting contour of the preform are recorded;
an imaging device of the preform; and
a processing unit, configured to control the cutting machine and the imaging device for execution of the following steps;
taking an image of the preform;
detecting intersections of the visually identifiable weaving threads in the taken image;
superimposing the taken image and the reference preform image and calculating a deviation between the detected intersections and intersections of the reference weaving threads present in the reference preform image;
correcting the cutting contour as a function of the deviation, and saving the corrected cutting contour in the memory; and
cutting the preform according to the corrected cutting contour.
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Abstract
A method for cutting a preform usable for production of a turbomachine part and including a weaving of a plurality of threads, the threads including single threads that are visually identifiable, along a cutting contour calculated based on a preform model in which the threads have a reference arrangement, the method including: taking an image of the preform; processing the image to determine a deviation in an arrangement of the threads which are visually identifiable relative to the reference layout; correcting the cutting contour according to the deviation; and cutting the preform along the corrected cutting contour.
15 Citations
9 Claims
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1. A cutting system of a preform comprising visually identifiable weaving threads, the preform being usable to produce a turbomachine part, the system comprising:
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a cutting machine of the preform; a memory, in which a reference preform image having a reference weaving thread layout and a pre-calculated cutting contour of the preform are recorded; an imaging device of the preform; and a processing unit, configured to control the cutting machine and the imaging device for execution of the following steps; taking an image of the preform; detecting intersections of the visually identifiable weaving threads in the taken image; superimposing the taken image and the reference preform image and calculating a deviation between the detected intersections and intersections of the reference weaving threads present in the reference preform image; correcting the cutting contour as a function of the deviation, and saving the corrected cutting contour in the memory; and cutting the preform according to the corrected cutting contour. - View Dependent Claims (2, 3, 4, 5, 8)
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6. A cutting system of a preform comprising visually identifiable weaving threads, the preform being usable to produce a turbomachine part, the system comprising:
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a cutting machine of the preform; a memory, in which a pre-calculated cutting contour of the preform and a pre-recorded point of reference of the cutting machine are recorded; an imaging device of the preform; and a processing unit, configured to control the cutting machine and the imaging device for execution of the following steps; taking an image of the preform; detecting intersections of the visually identifiable weaving threads in the taken image; identifying at least one point of reference in the image of the preform, said at least one point of reference corresponding one of the intersections, and superimposing the pre-calculated cutting contour and the taken image to calculate a difference between a position of the pre-recorded point of reference of the cutting machine and a position of the point of reference of the preform; controlling the cutting machine so that the cutting machine aligns a point of reference of the cutting machine to the point of reference of the preform; and cutting the preform according to the cutting contour. - View Dependent Claims (7, 9)
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Specification