Rotating Tool Head with Hybrid Carbide and Diamond Jacket
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Solution Overview
Problem
Existing rotating tools are costly due to the high expense of hard materials used for cutting edges, and they have limited service life, necessitating the development of a cost-effective solution that maintains tool longevity.
Innovation Solution
A rotating tool design featuring a hybrid component with a carbide core and a polycrystalline diamond or cubic boron nitride jacket, where the jacket is soldered to the core, allowing for the use of hard cutting materials efficiently and reducing material consumption, along with a detachable modular design for cost savings and extended service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If hard materials (polycrystalline diamond, cubic boron nitride) are used for the entire rotating tool, then service life is extended, but material cost increases significantly
Solution Approach 1:
The patent applies different materials to different parts of the tool: the tool head is made of hard material (polycrystalline diamond or cubic boron nitride) where cutting edges are needed, while the support shaft is made of less expensive material. This local differentiation extends service life at the cutting interface without incurring the full cost of hard materials throughout the entire tool.
Solution Approach 2:
The rotating tool is constructed as a composite structure combining hard material for the tool head with other materials for the support shaft. This composite approach allows the tool to benefit from the wear resistance of hard materials where needed while reducing overall material cost through the use of less expensive materials in non-critical areas.
2Duration of action of stationary object
If modular design with replaceable tool head is used, then cost is reduced and service life extended, but device complexity increases
Solution Approach 1:
The rotating tool is divided into separate modular components: a tool head and a support shaft that can be detached from each other. The tool head can be replaced when worn, extending the overall service life of the tool system. The segmentation allows the expensive hard material to be concentrated in the replaceable tool head while the support shaft can be reused.
Solution Approach 2:
The support shaft is designed as a universal component that can accommodate different tool heads through the detachable connection. This multi-functionality allows a single support shaft to serve multiple cutting applications by simply changing the tool head, reducing the need for multiple complete tools and extending service life across different applications.
3Manufacturing precision
If hard material is used for tool head, then cutting performance is improved, but ease of manufacture decreases
Solution Approach 1:
By segmenting the tool into a tool head and support shaft, the patent allows the tool head to be manufactured with high precision using hard materials, while the support shaft can be manufactured more easily with standard materials. The segmentation isolates the manufacturing complexity to only the necessary component.
Solution Approach 2:
The composite construction allows each component to be manufactured from materials optimized for its specific function: hard materials for the tool head where cutting precision is critical, and more manufacturable materials for the support shaft where ease of fabrication is more important. This material differentiation resolves the contradiction between cutting performance and ease of manufacture.
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 hybrid design reduces material costs and extends tool service life by utilizing hard cutting materials effectively, while the modular structure allows for easy replacement of worn parts, maintaining operational efficiency and reducing overall tool expenses.
Implementation Method 1
a jacket (16) made of a cutting material, which has a specified wall thickness (18). A number of grooves (20) are made in the jacket (16). The rotating tool is, for example, a drilling, milling, reaming, or counter-sinking tool and is preferably a milling tool, particularly an end mill.
Data Source
AI summary
The invention relates to a rotating tool including a support shaft extending in the axial direction along a rotational axis and a tool head connected thereto having a base body extending along the rotational axis and a core, to which a jacket made of a cutting material is placed, wherein the core has a circular cross-section (Q) in the radial direction and a jacket has a specified wall thickness and wherein a number of grooves is made in the jacket in order to form a number of cutting edges.