Grinding Worm Structure With Mixed-Grit Transition Section
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Solution Overview
Problem
Existing grinding worms with multiple abrasive grain sizes are complex to manufacture and have weak connection points that can lead to defects during use and dressing, necessitating a cost-effective and robust solution.
Innovation Solution
A grinding worm with integrated abrasive grains of different sizes and materials within the same matrix material, featuring a transition section for cohesive connection, eliminating separate modules and adhesive points, and produced through primary molding for enhanced durability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate grinding worm modules with different abrasive grains are combined using adhesive, then multiple grit sizes can be achieved in one tool, but the connection point becomes a weak point that can lead to defects during use and dressing
Solution Approach 1:
The patent merges multiple grinding worm modules with different abrasive grains into a single monolithic structure produced by one continuous casting process. This eliminates the need for adhesive connections between separate modules, thereby removing the weak connection points that cause defects during use and dressing, while still providing multiple grit sizes in one tool.
Solution Approach 2:
The patent uses composite materials by incorporating different abrasive grain types (e.g., aluminum oxide, silicon carbide, cubic boron nitride, diamond) with varying grain sizes into a single metal matrix. This allows the grinding worm to have multiple grit sizes in one tool while maintaining structural integrity through the unified metal matrix, avoiding the reliability issues of adhesive-bonded modules.
2Adaptability or versatility
If separate grinding worm modules are manufactured and then assembled, then different abrasive grains can be provided in different sections, but the manufacturing process becomes complex
Solution Approach 1:
The patent combines the manufacturing of multiple grinding worm modules into a single continuous casting process. Different abrasive grains are introduced at different stages of the same casting process, allowing different abrasive grains in different sections to be achieved without the complexity of separate manufacturing and assembly operations.
Solution Approach 2:
The patent employs preliminary action by pre-mixing different abrasive grains with the metal matrix material before casting. This allows the abrasive grains to be distributed and fixed within the matrix during the initial casting process, eliminating the need for subsequent assembly operations and reducing manufacturing complexity.
3Adaptability or versatility
If separate grinding worm modules are assembled with adhesive, then the tool can have multiple grit sizes, but adhesive points can detach during dressing
Solution Approach 1:
The patent merges separate grinding worm modules into a single monolithic structure where all abrasive grains are embedded in a unified metal matrix. This eliminates adhesive connections entirely, preventing detachment during dressing while maintaining the capability to provide multiple grit sizes in one tool.
Solution Approach 2:
The patent uses composite materials by embedding different abrasive grains directly into a metal matrix through a unified casting process. This creates strong mechanical bonds between the abrasive grains and the matrix, eliminating the weak adhesive connections that detach during dressing, while still providing multiple grit sizes.
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 results in a cost-effective and robust grinding worm that maintains performance throughout its service life, both during grinding and dressing, with improved durability and reduced risk of defects at connection points.
Implementation Method 1
a first section of the grinding worm has first abrasive grain that is bound into a matrix material, wherein a second section of the grinding worm has second abrasive grain that is bound into the matrix material
Data Source
Figure 1
Figure 2~4
Figure 5~6B
AI summary
Grinding screw, wherein the grinding screw (10) is a dressable grinding screw, wherein a first section (12) of the grinding screw (10) has a first abrasive grain (14) embedded in a matrix material (16), wherein a second section (18) of the grinding screw (10) has a second abrasive grain (20) embedded in the matrix material (16), wherein the first abrasive grain (14) and the second abrasive grain (20) differ from each other with respect to grain size and/or grain material, wherein a transition section (22) is formed between the first section (12) and the second section (18) in which both the first abrasive grain (14) and the second abrasive grain (20) are embedded in the matrix material (16), wherein the first section (12),the second section (18) and the transition section (22) have the same matrix material (16) and wherein in the transition section (22) at least sectionally a mixing of the first abrasive grain (14) and the second abrasive grain (20) is formed.