Wind Turbine Blade Suction Guide for Precise Drill Alignment
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Solution Overview
Problem
The challenge lies in accurately aligning a drill bit with respect to the surface of a wind turbine blade for drilling holes that require precise orientation, as existing supportive jigs are large, heavy, and unwieldy, making it difficult to maintain alignment during the drilling process for installing lightning protection system components.
Innovation Solution
A device comprising a suction cup with concentric outer and inner sealing elements and a tool guide, which creates a vacuum seal with the blade surface, allowing for precise alignment of the drill bit and alerting the user to misalignment through audible noise, ensuring the drill bit remains perpendicular or at an intended angle to the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional supportive jigs are used to align the drill bit, then alignment precision can be maintained, but the device becomes large, heavy, and unwieldy
Solution Approach 1:
The alignment device is segmented into a suction cup mounting portion and a tool guide portion, allowing the device to be divided into functional modules that can be independently optimized for size and weight while maintaining alignment precision through the guide portion's geometric constraints
Solution Approach 2:
The invention employs a suction cup with vacuum sealing to attach the alignment device to the blade surface, replacing traditional mechanical fixation systems. This pneumatic attachment method significantly reduces device weight and complexity while maintaining stable positioning during the drilling operation
2Device complexity
If a simple alignment device is used, then device complexity is reduced, but maintaining precise alignment during drilling becomes difficult
Solution Approach 1:
The tool guide portion is designed with geometric features that automatically maintain drill bit alignment through its structure itself, without requiring additional active control systems. The guide insert and passage geometry self-correct for alignment, allowing the simple device to maintain precision throughout the drilling operation
3Device complexity
If the suction cup uses a single sealing element, then device complexity is reduced, but sealing effectiveness on curved surfaces diminishes
Solution Approach 1:
The sealing system is segmented into multiple sealing elements at different locations on the suction cup, allowing each sealing element to independently contact and seal against the curved blade surface. This segmentation enables effective sealing on non-planar surfaces while keeping each individual sealing element simple in design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device provides a simple, robust, and effective means to align tools on wind turbine blades, ensuring accurate hole drilling orientations, thereby enhancing the installation of lightning protection system components and preventing electrical arcing or damage.
Implementation Method 1
a suction cup having an outer sealing element for sealing against the target surface; an inner sealing element located radially inward of the outer sealing element for sealing against the target surface, a suction cavity being defined between the outer sealing element and the inner sealing element
Data Source
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AI summary
A device for aligning a tool at a predetermined orientation with respect to a target surface of a wind turbine blade, the device comprising: a suction cup having an outer sealing element for sealing against the target surface; an inner sealing element located radially inward of the outer sealing element for sealing against the target surface, a suction cavity being defined between the outer sealing element and the inner sealing element; and a tool guide located radially inward of the inner sealing element, wherein the tool guide defines a tool access passage.