Excavating Tooth Abrasion-Resistant Layer Design
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Solution Overview
Problem
The existing excavating teeth experience abrasion on both side portions of the blade edge, leading to a reduction in penetration force as the cutting edge shape becomes round during excavation, despite efforts to inhibit general abrasion.
Innovation Solution
An excavating tooth design featuring an abrasion-resistant layer with specific sections on the tip end face and slope faces, along with a hexagonal tip end face, to prevent abrasion and maintain the cutting edge's shape and penetration force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an abrasion-resistant layer is formed on the central portion of the top face and bottom face, then general abrasion is inhibited, but side portions of the blade edge are still subjected to abrasion causing the cutting edge to become round
Solution Approach 1:
The patent applies local quality by forming abrasion-resistant layers at specific locations: the central portion of the top face and bottom face, and crucially, the side portions of the tip end face where the blade edge is located. This targeted approach ensures that high-wear areas receive enhanced protection while maintaining the overall structural integrity and cutting edge geometry of the excavating tooth.
2Productivity
If the cutting edge penetrates into the excavation subject, then excavation function is achieved, but the cutting edge undergoes abrasion reducing penetration force
Solution Approach 1:
The patent implements preliminary action by pre-forming abrasion-resistant layers on the cutting edge and tip end face before the excavating tooth begins its service life. This preventive measure ensures that when the tooth first penetrates into the excavation subject, the cutting edge is already protected against abrasion, maintaining high penetration force throughout the operational period rather than degrading over time.
3Ease of manufacture
If the tip end face has a tetragonal shape, then manufacturing is simple, but corners of the tip end face are subjected to high load and abrasion
Solution Approach 1:
The patent applies local quality by specifically reinforcing the corner regions of the tip end face with abrasion-resistant layers. While the overall tetragonal shape is maintained for manufacturing simplicity, the corners receive localized protection through the formation of abrasion-resistant layers on the side portions of the tip end face, addressing the high-stress concentration areas without changing the fundamental geometry.
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 effectively inhibits abrasion on the tip end and side portions of the cutting edge, maintaining high penetration force and preventing the cutting edge from becoming rounded, thus enhancing the excavating tooth's operational longevity.
Implementation Method 1
the abrasion-resistant layer includes a first abrasion-resistant layer section formed on the tip end face and a second abrasion-resistant layer section formed respectively on the pair of first slope faces and the pair of second slope faces... it is possible to inhibit the tip end and side portions of a blade edge from being abraded
Data Source
AI summary
An excavating tooth includes a body and an abrasion-resistant layer. The abrasion-resistant layer has hardness higher than the body. The body includes a tip end face, a first face, a second face, a pair of first slope faces, and a pair of second slope faces. The abrasion-resistant layer includes a first abrasion-resistant layer section and a second abrasion-resistant layer section. The first abrasion-resistant layer section is formed on the tip end face. The second abrasion-resistant layer section is formed respectively on the pair of first slope faces and the pair of second slope faces. Thereby, it is possible to obtain an excavating tooth and a body for the excavating tooth capable of keeping a penetration force of a blade edge high in penetrating into an excavation subject.