Grinding Disc Reinforcement Layout for High-Speed Vibration Stability
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Solution Overview
Problem
Existing grinding discs used for rough machining and cutting off are limited by their stability and performance at higher rotational speeds, leading to vibrations and uneven cuts.
Innovation Solution
A grinding disc design with additional fabrics embedded on reinforcing fabrics, reducing the number and weight of inner reinforcing fabrics while maintaining stiffness, allowing higher rotational speeds and improved cutting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the number and weight of inner reinforcing fabrics are increased to improve stability and stiffness, then the grinding disc becomes heavier and more complex, but this reduces grinding performance and cutting-off performance at higher rotational speeds
Solution Approach 1:
The reinforcing fabric structure is segmented into multiple functional layers: outer reinforcing fabrics (first and second) embedded in the grinding layer for structural support, and additional fabrics (third and fourth) positioned between the outer fabrics for localized stiffening. This segmentation allows each layer to perform specific functions, optimizing both stability and grinding performance independently.
Solution Approach 2:
The additional fabrics are positioned specifically in the region between the outer reinforcing fabrics, creating local quality enhancement in the central area of the grinding disc. This localized reinforcement provides necessary stiffness and stability without adding weight or complexity to the entire disc structure, thereby maintaining high grinding performance at the working perimeter.
2Reliability
If the number and weight of inner reinforcing fabrics are increased to prevent vibrations at higher rotational speeds, then the grinding disc structure becomes more complex, but this deteriorates cutting-off performance
Solution Approach 1:
The vibration resistance function is segmented between the outer reinforcing fabrics (which provide overall structural integrity) and the additional fabrics (which provide localized damping and stiffening). This segmentation prevents vibrations effectively while keeping the overall structure relatively simple and lightweight.
Solution Approach 2:
The grinding disc employs a composite fabric structure combining outer reinforcing fabrics made of high-strength material for structural support and additional fabrics for vibration damping. This composite approach achieves superior vibration resistance without significantly increasing structural complexity.
3Productivity
If the fabric weight is reduced to improve grinding performance, then the structural stability and stiffness are compromised, but this limits the useable rotational speed range
Solution Approach 1:
The fabric weight is optimized through local quality differentiation: the outer reinforcing fabrics maintain sufficient weight and strength for structural stability, while the additional fabrics provide targeted stiffening with minimal weight. This allows the grinding disc to achieve high grinding performance with reduced overall fabric weight while maintaining necessary stiffness.
Solution Approach 2:
The fabric structure is segmented into multiple layers with different weight contributions: heavier outer fabrics for structural integrity and lighter additional fabrics for stiffness enhancement. This segmentation enables the disc to operate at higher rotational speeds with improved grinding performance without compromising strength.
Data Source
AI summary
A grinding disc comprises a grinding layer formed of grinding grains bound by means of a binding agent. Reinforcing fabrics are embedded in the grinding layer on the outer sides of the grinding layer. At least one additional fabric is arranged on at least one of the reinforcing fabrics and has a respective diameter which is smaller than the diameter of the rein-forcing fabrics. The at least one additional fabric stiffens the grinding disc in a region around a central opening and improves the properties of the grinding disc during rough machining and/or cutting off.