Diamond Cutting Insert Layout for Miniaturized Durability
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Solution Overview
Problem
Existing cutting inserts face durability issues when miniaturized due to the formation of a region with small thickness between the recessed part and the through hole, leading to potential damage under load during the cutting process.
Innovation Solution
A cutting insert design comprising a body member made of cemented carbide or cermet and a cutting member made of polycrystalline or monocrystalline diamond, where the cutting member is brazed to the body member using a brazing filler, and the through hole penetrates through the upper and lower surfaces of the body member, avoiding a small thickness region between the recessed part and the through hole, thereby enhancing durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cutting insert is miniaturized to reduce size, then the productivity and precision are improved, but the durability becomes insufficient due to the formation of a small thickness region between the recessed part and the through hole
Solution Approach 1:
The through hole is repositioned to penetrate through the upper and lower surfaces of the body member rather than through the front and rear surfaces. This dimensional change in hole orientation eliminates the formation of a small thickness region between the recessed part and through hole, thereby maintaining structural integrity and durability even when the cutting insert is miniaturized.
2Ease of operation
If the through hole is positioned to allow clamp screw insertion from the front surface, then the ease of operation is improved, but the durability deteriorates due to the small thickness region formation
Solution Approach 1:
Instead of inserting the clamp screw from the front surface through a traditionally positioned through hole, the through hole is inverted to penetrate through the upper and lower surfaces. The clamp screw is then inserted from the upper surface, reversing the conventional insertion direction and eliminating the small thickness region problem while maintaining ease of operation.
3Device complexity
If the recessed part and through hole are positioned close to each other to compact the structure, then the device complexity is reduced, but the strength becomes insufficient in the region with small thickness
Solution Approach 1:
The through hole penetrates through the upper and lower surfaces rather than front and rear surfaces, changing the spatial dimension of hole placement. This allows the recessed part and through hole to be positioned closer together in the compacted structure without creating a small thickness region, thereby maintaining both structural compactness and sufficient strength.
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 design significantly improves the durability of the cutting insert by reducing the likelihood of damage from load applied during the cutting process and minimizing the risk of the body member contacting the workpiece, ensuring stable performance even in miniaturized forms.
Implementation Method 1
the cutting member is brazed to the body member using a brazing filler
Data Source
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AI summary
In an embodiment, a cutting insert includes a body member and a cutting member. The body member is a columnar body, and includes: an upper surface; a lower surface; and an outer side surface between the upper surface and the lower surface. The cutting member is located at a corner part of the outer side surface in the body member. The cutting member includes: at least three surfaces being exposed; and a cutting edge at an intersecting portion of two of the at least three surfaces. The body member includes a through hole penetrating through the upper surface and the lower surface.