US20180250895A1 - Wind turbine blade manufacturing method or apparatus - Google Patents
A positioning jig (25) and a method for manufacturing a wind turbine blade comprising moulding a first and a second blade shell portion in respective first and second mould tools; positioning a shear web (15) in a spanwise direction within a first shell portion (20) in a said first mould tool (7); anchoring said shear web in position in said first shell portion; and closing said second shell portion (21) over said first shell portion to thereby generate a wind turbine blade shell defining a chordwise extent between a in trailing edge and a leading edge thereof, and a spanwise extent between a root region and a tip thereof and wherein said shear web, bordered by a first (24) and a second longitudinal edge, extends in a thickness direction of said blade; said method further comprising: providing a positioning jig; and securing said positioning jig to said shear web, prior to its introduction into said first shell portion and guiding said shear web into its predetermined standing position in said first shell portion, with its first longitudinal edge adjacent said first shell portion, by engaging a reference surface (33) of said positioning jig with a locating surface (12) at said first mould tool thereby to bring said positioning jig into its guide position with said shear web in its predetermined standing position; and removing said positioning jig from said first mould tool prior to closing said second shell portion over said first shell portion. A shear web, especially an upper edge thereof, may be additionally secured to the blade shell using ligaments (30) prior to removal of the positioning jig.
