Grinding Wheel With FRP Outer Part For Weight Reduction
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Solution Overview
Problem
Conventional grinding wheels made of steel are heavy, leading to increased exchange time and potential cracking and fatigue failure due to burning during crank processing.
Innovation Solution
A grinding wheel design featuring a steel central part and a fiber-reinforced plastic (FRP) outer peripheral part, with the FRP layer laminated in multiple plies perpendicular to the wheel central part, providing superior mechanical properties and vibration/shock absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a grinding wheel is made of steel, then it has high strength and durability, but it becomes heavy leading to increased exchange time and potential cracking due to burning
Solution Approach 1:
The grinding wheel uses a composite structure combining steel central part with fiber-reinforced plastic outer peripheral part. The steel core provides structural strength and durability, while the FRP outer layer reduces overall weight and prevents burning-related cracking, thus resolving the contradiction between strength and weight.
Solution Approach 2:
The grinding wheel is divided into two functional segments: a steel central part for structural support and a fiber-reinforced plastic outer peripheral part for weight reduction and thermal protection. This segmentation allows each material to perform its optimal function, addressing both strength requirements and weight concerns.
2Strength
If a grinding wheel is made of steel, then it has high strength, but the exchange time increases due to the need to use a crane or forklift
Solution Approach 1:
By segmenting the grinding wheel into a permanent steel central part and a replaceable outer peripheral part, the invention allows the lighter outer part to be quickly exchanged without heavy lifting equipment, reducing exchange time while maintaining the strength benefits of the steel core.
Solution Approach 2:
The outer peripheral part is designed as a consumable/replaceable component that can be discarded after wear and recovered for replacement, while the valuable steel central part is retained and reused. This approach reduces exchange time and resource waste.
3Stability of the object's composition
If a grinding wheel is made of steel, then it maintains structural integrity, but cracking and fatigue failure occur due to burning on the surface
Solution Approach 1:
The composite structure combines steel's structural integrity with fiber-reinforced plastic's resistance to thermal stress and burning. The FRP outer layer protects against burning that would cause cracking in pure steel wheels, while the steel core maintains overall structural integrity.
Solution Approach 2:
Different materials are applied to different parts of the wheel: steel for the central structural core where strength is critical, and fiber-reinforced plastic for the outer peripheral part where thermal protection and crack resistance are most needed. This local optimization resolves the contradiction between structural integrity and resistance to burning-induced failure.
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 grinding wheel exhibits improved mechanical properties, reduced risk of cracking and fatigue failure, increased quality and productivity of processed products, and is lighter in weight compared to conventional wheels, with the ability to reuse the wheel outer peripheral part after replacing the abrasive part.
Implementation Method 1
exhibiting superior mechanical properties and vibration/shock absorption and offsetting effects
Implementation Method 2
a fiber-reinforced plastic (FRP) layer is laminated and joined in a plurality of plies in a direction perpendicular to the outer surface of the wheel central part
Data Source
AI summary
The present disclosure provides a grinding wheel for grinding, configured such that a fiber-reinforced plastic (FRP) layer in a wheel outer peripheral part located on the outer surface of a wheel central part is provided at a position and thickness that vary depending on the type of weaving pattern layer, thereby exhibiting superior mechanical properties and superior vibration/shock absorption and offsetting effects compared to conventional grinding wheels, so problems such as cracking and fatigue failure due to burning do not occur, and the quality and productivity of processed products can be improved. Moreover, the grinding wheel is lighter in weight than conventional grinding wheels, and when an abrasive part is completely consumed, it can be replaced with a new abrasive part through removable attachment thereof, whereby the wheel outer peripheral part (wheel body) can be reused continuously, and the exchange time and the amount of tool wear can be reduced.