| CPC B29C 70/545 (2013.01) [B29C 70/18 (2013.01); B29C 70/345 (2013.01); B29C 2037/90 (2013.01); B29K 2105/089 (2013.01); B29L 2031/3076 (2013.01)] | 9 Claims |
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1. A method for ascertaining cutting-to-size data, on a basis of which a textile sheet material can be cut to size to obtain a cut-to-size textile ply suitable for production of a three-dimensional composite component that is formed from textile plies and has an undevelopable surface, the method comprising:
a) providing a substantially two-dimensional textile sheet material in a form of a cut-to-size blank, which has at least one cut-to-size blank edge;
b) draping the cut-to-size blank on a molding tool or preceding cut-to-size blank suitable for the production of the three-dimensional composite component including the undevelopable surface;
c) ascertaining a deviation of a profile, resulting from step b), of the cut-to-size blank edge and a reference profile, predefined by the undevelopable surface, from setpoint cut-to-size edges, wherein ascertaining the deviation of the profile comprises:
providing a laser projection of the setpoint cut-to-size edges and a measuring grid over the cut-to-size blank; and
applying an image evaluation method or laser scan to measure the deviation of the profile of the cut-to-size blank edge at each of a plurality of grid lines of the measuring grid from corresponding points on the reference profile of the setpoint cut-to-size edges;
d) when an extent of the deviation ascertained in step c) is above a predefined threshold value: removing the cut-to-size blank and changing the profile of the cut-to-size blank edge based on the deviation ascertained in step c) and repeating steps b) to d),
otherwise storing the profile of the cut-to-size blank edge for this cut-to-size blank in a form of cutting-to-size data, and leaving the cut-to-size blank on the molding tool or the preceding cut-to-size blank.
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