Chisel Head Body Composite Edge Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional chisels lack an effective design that combines materials with varying hardness levels to optimize performance for tasks requiring both durability and precision in edge definition and material removal.
Innovation Solution
A chisel design featuring a body made of a first material, such as tool steel, and a head made of a harder material like carbide or high-speed steel, with specific geometries and configurations that include channels, recesses, and multiple surfaces to define working edges and surfaces, allowing for enhanced material removal and edge durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a chisel is made of a single material, then the structure is simple and easy to manufacture, but the edge durability and material removal efficiency are insufficient
Solution Approach 1:
The chisel is constructed with a body made of softer material (such as tool steel) and a head made of harder material (such as carbide or high-speed steel), creating a composite structure that combines the durability of the softer body with the edge retention of the harder head, resolving the contradiction between edge durability and structural simplicity
Solution Approach 2:
The chisel is divided into distinct segments - a body portion and a head portion - with different material properties. The body provides structural integrity and shock resistance, while the head provides cutting edge durability, allowing each segment to optimize its specific function without compromising the other
2Reliability
If the head is made of harder material than the body, then edge durability is improved, but manufacturing complexity increases
Solution Approach 1:
The harder head material is pre-formed into the desired geometry and then integrated with the softer body material through bonding processes such as welding or brazing. This preliminary preparation of the head component allows for optimized cutting edges while managing the manufacturing complexity through standardized joining techniques
Solution Approach 2:
The patent utilizes significant hardness parameter differences between the body and head materials to achieve the desired functional properties. By selecting materials with markedly different hardness values (e.g., tool steel body and carbide head), the design achieves superior edge retention while the manufacturing complexity is managed through established industrial processes for joining dissimilar metals
Data Source
AI summary
A chisel includes a body formed of a first material and including a first end having a shank and a second end. The second end includes a first planar side that defines a first plane, a second planar side that defines a second plane, a third side, and a fourth side. The body includes a channel formed in an edge of the second end between the first planar side and the second planar side and extends from the third side to the fourth side. The body includes a longitudinal axis extending through the first and second ends. The chisel includes a head formed of a second material that is harder than the first material. The head is received in the channel and positioned between the first and second planes. The head extends continuously between the third side and the fourth side to define a working surface of the chisel.