Ball End Mill Solid Carbide Shank Shrink Fit Cooling
Solution Overview
Problem
Existing ball milling cutters face challenges in producing high-quality ball tracks for homokinetic drive shafts due to wear and rigidity issues during machining processes.
Innovation Solution
A ball milling cutter with a solid carbide milling head and a steel shank section, where the shank is shrunk into a tool holder or intermediate piece, providing a rigid and durable connection, and featuring separate cooling channels for each cutting edge to enhance stability and cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the milling head is made of solid carbide to improve wear resistance, then the service life is improved, but the tool becomes more prone to breaking under sudden forces
Solution Approach 1:
The patent applies composite materials by combining solid carbide for the milling head (to provide wear resistance) with steel for the shank section (to provide toughness and resistance to breaking). This composite construction allows each material to be used where its properties are most beneficial, resolving the contradiction between wear resistance and resistance to breaking.
2Temperature
If cooling channels are integrated into the milling head, then cooling efficiency is improved, but the structural integrity and rigidity may be compromised
Solution Approach 1:
The patent applies local quality by providing separate cooling channels for each cutting edge only in the regions where cooling is most needed, while maintaining the overall structural integrity of the solid carbide milling head. The cooling channels are strategically positioned to provide localized cooling without compromising the global rigidity and strength of the tool.
3Strength
If the shank section is made of steel for toughness, then resistance to breaking is improved, but the wear resistance at the cutting edges is reduced
Solution Approach 1:
The patent applies segmentation by dividing the tool into distinct functional sections: the milling head made of solid carbide for wear resistance at the cutting edges, and the shank section made of steel for toughness and resistance to breaking. This segmentation allows each part to be optimized for its specific function, resolving the contradiction between strength and service life.
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 solution significantly improves the service life and accuracy of the ball milling cutter by combining the toughness of steel with the wear resistance of solid carbide, while ensuring precise positioning and optimized chip removal through enhanced cooling and lubrication.
Implementation Method 1
Solid carbide is particularly resistant, which improves the service life of the tool, especially with regard to wear caused by abrasive chips during a machining process.
Implementation Method 2
Steel, on the other hand, has a high level of toughness.
Implementation Method 3
The shank section is shrunk into a corresponding receiving area of a tool holder.
Data Source
Figure 1
Figure 2a~3
AI summary
A ball track milling cutter (3) is proposed, comprising a milling head (4) on which a cutting edge (6) is arranged. According to the invention, the milling head (4) is made of solid carbide. Furthermore, a tool system is proposed with a ball track milling cutter (3) and a tool holder (2), in which the ball track milling cutter (3) is shrink-fitted into the tool holder (2). A method for attaching a ball track milling cutter (3) is also proposed.