Replaceable Blade Holder Segmentation for Tolerance Control
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Solution Overview
Problem
Conventional blade holders with integral manufacturing suffer from tolerance issues due to material shrinkage, leading to non-straight mounting rods and increased manufacturing costs, and their blade limiting structures are complex and not adaptable to various blade types.
Innovation Solution
A blade holder design featuring a supporting base formed by stacking two plates of different shapes, with positioning columns, a convex column, and a blade limiting component comprising a limiting rod and catch plate, allowing for precise assembly and disassembly, and a simpler blade limiting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the supporting base and mounting rod are manufactured integrally, then the structural strength is improved, but the manufacturing precision deteriorates due to material shrinkage causing non-straight mounting rods
Solution Approach 1:
The blade holder is divided into separate components: a supporting base and a mounting rod, which are assembled together rather than manufactured as a single integral piece. This segmentation allows each component to be manufactured and inspected independently, ensuring the mounting rod maintains its straightness while the overall structure achieves the required strength through proper assembly and connection design.
2Device complexity
If the supporting base and mounting rod are manufactured integrally, then the assembly complexity is reduced, but the manufacturing cost increases due to elimination of semi-finished products with tolerance issues
Solution Approach 1:
By segmenting the blade holder into separate components, the invention enables independent manufacturing and quality control of each part. This reduces waste from eliminating defective integral pieces, lowers manufacturing costs, and maintains assembly simplicity through standardized connection interfaces between the supporting base and mounting rod.
Solution Approach 2:
The mounting rod is pre-manufactured and inspected for straightness before assembly with the supporting base. This preliminary action ensures quality control at the component level, preventing the need to eliminate entire semi-finished products due to tolerance issues, thereby reducing manufacturing costs while maintaining assembly efficiency.
3Reliability
If a conventional blade limiting structure is used, then the blade displacement is limited, but the structure complexity increases and adaptability to different blade types is reduced
Solution Approach 1:
The blade limiting structure is designed with universal features that can accommodate different blade types. The limiting rod and catch plate configuration provides effective displacement control while maintaining simplicity and adaptability, allowing the same structure to work with various blade configurations without requiring complex modifications.
4Reliability
If a conventional blade limiting structure is used, then the blade displacement is limited, but the ease of manufacture deteriorates due to complicated structure
Solution Approach 1:
The simplified universal limiting structure using a limiting rod and catch plate achieves reliable blade displacement control while being easy to manufacture. This design avoids complex features, reducing manufacturing difficulty and cost while maintaining effectiveness across different blade types through its adaptable configuration.
Data Source
AI summary
The invention provides a blade holder with a replaceable blade. The replaceable blade is provided with at least one first hole and a second hole. The blade holder comprises a supporting base, a positioning column, a convex column, and a blade limiting component. The supporting base comprises a plurality of plates. The blade limiting component comprises a limiting rod arranged on the supporting base and a catch plate assembled with the limiting rod. The catch plate is provided with a track matched with the convex column, and moves relative to the supporting base with the limiting rod as a pivot. The limiting rod penetrates through the second hole and is fixed on the catch plate to rotate when the catch plate moves, thereby switching between a first position allowing separation of the second hole and a second position limiting the separation of the second hole.