Cutting Template Guide for Fibrous Composite Winding
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Solution Overview
Problem
The precise cutting of fibrous texture at the end of winding in composite material gas turbine casing production is challenging due to the need for accurate positioning of cutting tools to avoid fiber or resin imbalances, leading to potential inaccuracies and deformation of the preform.
Innovation Solution
A device with positioning wedges and a cutting template plate is used to guide the cutting tool, ensuring precise cutting while minimizing handling and deformation, featuring a protective film and adjustable positioning for optimal alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual cutting of fibrous texture is performed without precise positioning, then cutting operation is simpler and faster, but it creates zones too rich in fibers or resin leading to manufacturing defects
Solution Approach 1:
A plate forming a cutting template is introduced as an intermediary device between the cutting tool and the fibrous texture. This plate with a slot provides precise positioning and guidance for the cutting tool, ensuring accurate cuts without requiring complex positioning systems. The plate acts as a simple yet effective mediator that translates the need for precision into a practical, easy-to-use solution.
Solution Approach 2:
The cutting template plate is designed to be self-positioning on the impregnation mandrel using positioning wedges. Once positioned, the plate itself provides the guidance and positioning function for the cutting tool through its slot, eliminating the need for external positioning mechanisms. The device serves itself by incorporating the positioning function directly into the cutting template structure.
2Ease of operation
If extensive handling of the preform is performed during cutting, then positioning adjustments can be made, but it increases deformation of the preform
Solution Approach 1:
The positioning wedges are designed to be placed on the side flanges of the impregnation mandrel before the cutting operation begins. This preliminary positioning action secures the cutting template plate in the correct position beforehand, eliminating the need for adjustments during cutting. By performing the positioning action in advance, the preform remains undisturbed throughout the cutting process, preventing deformation.
3Manufacturing precision
If precise positioning of cutting tool is implemented, then cutting accuracy is improved, but cutting time increases due to careful positioning
Solution Approach 1:
The cutting template plate with its slot provides automatic guidance for the cutting tool. Once the plate is positioned on the positioning wedges, the slot itself guides the cutting tool along the correct path, eliminating the need for continuous positioning adjustments during cutting. This self-guiding mechanism maintains high cutting accuracy while minimizing the time required for positioning operations.
Data Source
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AI summary
The invention concerns a device for use in cutting a layer having a fibrous texture that is wound onto an impregnation mandrel of a winding machine, comprising two positioning shims (102) that are each designed to be positioned on a side plate (26) of the impregnation mandrel, and a plate (108) forming a cutting template that is designed to be positioned on the layer having a fibrous texture (180) to be cut, level with the protective film, said plate being provided with a slot (110) extending in position between the side plates of the impregnation mandrel and designed to serve as a guide for a cutting tool (200).