Trimming Leading-Edge Protection Elements for Wind Turbine Blades
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Solution Overview
Problem
The increasing tip speeds of wind turbine blades due to larger sizes lead to leading-edge erosion from wind, rain, hail, and sand, reducing aerodynamic performance and structural integrity, necessitating efficient protective solutions to minimize maintenance and repair needs.
Innovation Solution
A method and system for trimming pre-manufactured leading-edge protection elements, using a support structure, clamping means, and cutting tools to precision-cut the elements to specific lengths matching the airfoil profile of wind turbine blades, ensuring high product consistency and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If leading-edge protection elements are pre-manufactured without trimming, then production efficiency is improved, but manufacturing precision deteriorates due to inability to achieve exact length specifications
Solution Approach 1:
The manufacturing process is segmented into two distinct stages: pre-manufacturing of protection elements with extended lengths, followed by a separate trimming operation. This allows each stage to be optimized independently - the pre-manufacturing stage focuses on production efficiency while the trimming stage ensures precise length specifications are met.
Solution Approach 2:
The protection elements are pre-manufactured with extended lengths that exceed the final required dimensions. This preliminary action enables efficient mass production of standardized components that can later be precisely trimmed to match specific blade configurations without compromising the efficiency of the initial manufacturing process.
2Manufacturing precision
If additional modifications are made after pre-manufacturing, then manufacturing precision is improved, but productivity deteriorates due to increased processing time
Solution Approach 1:
The manufacturing workflow is divided into a standardized pre-manufacturing phase that produces consistent base components, followed by a controlled trimming phase that achieves final precision. This segmentation prevents the need for multiple iterative modifications while maintaining both efficiency and precision.
Solution Approach 2:
The trimming process allows for precise adjustment of the length parameter to match specific airfoil profile requirements. By controlling the trimming operation with predetermined cutting paths and automated guidance, the system achieves high manufacturing precision without requiring multiple modification cycles, thereby maintaining productivity.
3Manufacturing precision
If manual trimming is used to achieve precise lengths, then manufacturing precision is improved, but device complexity increases due to additional equipment and setup requirements
Solution Approach 1:
The trimming system uses the protection element itself and the support structure as reference features to guide the cutting process. The predetermined cutting paths are defined relative to the element's geometry, allowing the workpiece to participate in defining its own trimming trajectory and reducing the need for complex external positioning equipment.
Solution Approach 2:
A support structure with fixturing serves as an intermediary between the protection element and the trimming tool. This intermediary provides stable positioning and guidance during trimming while maintaining relatively simple construction, enabling precise cuts without requiring complex direct positioning systems.
Data Source
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AI summary
The present invention provides a method for trimming a side portion of a premanufactured leading-edge protection element for a wind turbine blade. The element comprises a first side portion and a second side portion, the first side portion, when mounted to the wind turbine blade, extending from the leading edge and along a part of a pressure side of the wind turbine blade, and the second side portion, when mounted to the wind turbine blade, extending from the leading edge and along a part of a suction side of the wind turbine blade, or vice versa. The method comprises steps of: providing a support structure and a first cutting tool; arranging element on the support structure and fixating the element to the support structure, and cutting along a predetermined cutting path, whereby the leading-edge protection element is trimmed to a predetermined length. A corresponding system is also provided.