Notched Diamond Cutter with Interlocking Support for Fast Cutting
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Solution Overview
Problem
Conventional cutting devices for hard materials like concrete and stone often require slow cutting speeds to prevent damage, but notched designs, which reduce friction, are weaker and prone to breaking.
Innovation Solution
A saw blade and core bit with an interlocking support assembly featuring notched cutters made of a diamond-metal matrix, supported by a softer diamond-metal matrix or lower diamond concentration material, allowing for high-speed cutting without compromising strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If notched segment design is used to reduce frictional drag and increase cutting speed, then cutting speed is improved, but strength is worsened due to removal of material
Solution Approach 1:
The patent applies local quality by creating zones with different diamond concentrations within the cutting segments. The notched portions have lower diamond concentration for reduced friction and faster cutting, while the reinforcement portions have higher diamond concentration for increased strength and durability. This spatial variation in material properties resolves the contradiction between speed and strength.
Solution Approach 2:
The patent uses composite materials with varying diamond-metal matrix compositions throughout the cutting segment. By combining regions of different diamond concentrations (softer in notched areas, harder in reinforcement areas), the segment achieves both high cutting speed through reduced friction and adequate strength through strategic reinforcement, eliminating the need to choose between speed and strength.
2Strength
If straight segment design is used to maintain strength, then segment strength is improved, but cutting speed is worsened due to increased frictional drag
Solution Approach 1:
Rather than using a uniformly straight segment design, the patent introduces local variations with notched portions that have lower diamond concentration. These localized notched zones reduce frictional drag and enable faster cutting, while the overall segment maintains strength through reinforcement portions with higher diamond concentration. This resolves the contradiction by allowing speed enhancement in specific areas without compromising overall structural integrity.
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
Enables fast starting and high-speed cutting of hard materials like concrete and stone while minimizing the risk of segment damage, by providing reinforcement to notched cutters without increasing frictional drag.
Implementation Method 1
a cutting portion including an interlocking support assembly and a plurality of notched cutters... The notched cutters are formed of a first diamond-metal matrix
Implementation Method 2
The interlocking support assembly is provided radially outwardly of the notched cutters and includes a softer diamond-metal matrix... to reduce frictional drag
Data Source
Figure 1
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AI summary
A diamond cutting tool (200; 200') for enabling a fast cutting start may include a rotatable main body (210) and a cutting portion (220). The rotatable main body may include a substantially circular periphery. The cutting portion may include an interlocking support assembly (280) and a plurality of notched cutters (270). The notched cutters may be disposed around the circular periphery extending outwardly from the main body. The notched cutters (270) may be formed of a first diamond-metal matrix. The interlocking support assembly (280) may be provided radially outwardly of the notched cutters and may include a softer diamond-metal matrix and/or a different diamond concentration therein than the first diamond-metal matrix. The interlocking support assembly may include a reinforcement portion (284) disposed between the notched cutters (270) and a top section (282) covering radially distal portions of the notched cutters.