Dual-Matrix Core Drill Bit for Glass Edge Quality and Wear Control
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Solution Overview
Problem
Core drill bits used for drilling brittle materials like glass often result in chipped edges and have a short service life due to inadequate edge control and wear issues.
Innovation Solution
A core drill bit design featuring two regions with different bond matrices, one containing transition metals like Co, Fe, and Cu, and the other with Sn, which improves wear resistance and edge quality by varying the composition and properties of the abrasive tip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single bond matrix composition is used in the abrasive tip, then the manufacturing process is simple, but the service life is reduced and edge quality deteriorates
Solution Approach 1:
The abrasive tip is divided into multiple regions, each containing abrasive grains within a different bond matrix composition. This segmentation allows each region to be optimized for specific functions (e.g., initial cutting, continuous cutting, edge control) while collectively extending the overall service life of the drill bit.
Solution Approach 2:
Different regions of the abrasive tip are assigned different bond matrix compositions tailored to their specific functional requirements. For example, certain regions may use harder bond matrices for durability while others use softer matrices for better edge control, optimizing performance locally across the tip surface.
2Device complexity
If a single bond matrix composition is used in the abrasive tip, then the device structure is simple, but edge control and chipping prevention are inadequate
Solution Approach 1:
The abrasive tip surface is segmented into multiple functional regions with different bond matrix compositions, where specific regions are optimized for edge control and chipping prevention. This segmentation enables targeted performance enhancement without requiring complete redesign of the entire device.
Solution Approach 2:
Regions requiring superior edge control are equipped with bond matrix compositions specifically designed for that function, allowing precise control over edge quality at critical locations while maintaining simpler compositions in less critical areas.
3Quantity of substance
If conventional abrasive tips are used, then the initial cost is lower, but wear resistance deteriorates and service life is reduced
Solution Approach 1:
The abrasive tip utilizes composite material structures with multiple bond matrix compositions, each selected for its specific wear resistance properties. This composite approach enhances overall wear resistance and service life, providing better value despite potentially higher initial material costs.
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 drill bit achieves improved edge control and extended service life by reducing wear and chipping, enabling the formation of more holes in glass without significant degradation.
Implementation Method 1
an abrasive tip comprising a first region comprising abrasive grains within a first bond matrix; and a second region comprising abrasive grains within a second bond matrix
Data Source
Figure 1
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AI summary
A core drill bit can include a first region and a second region. The first region can include abrasive particles in a first bond matrix, and the second region can include abrasive particles in a second bond matrix. The first region is connected to the second region. A composition of the first bond matrix can be different from a composition of the second matrix. In a particular embodiment, the first bond matrix can include a Co-containing material.