Bionic Grinding Wheel Capillary Fluid Delivery
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Solution Overview
Problem
Existing grinding technologies face challenges in effectively conveying grinding fluid to the grinding zone due to an air barrier generated during high-speed rotation, leading to reduced grinding wheel service life and workpiece quality.
Innovation Solution
A bionic Australian thorny devil grinding wheel is designed with semi-open capillary channels and a honeycomb structure, featuring prismatic abrasive grains with isosceles trapezoidal bottom surfaces and a hydrophilic structure at one end, arranged in a directional liquid self-conveying flow channel and superhydrophilic honeycomb-like hexagonal distribution to enhance fluid infiltration and utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional grinding wheels are used with high-speed rotation, then grinding efficiency is maintained, but an air barrier layer is generated that prevents grinding fluid from effectively entering the grinding wedge zone
Solution Approach 1:
The grinding wheel incorporates a porous matrix structure with controlled porosity that enables the grinding fluid to penetrate through the wheel body and reach the grinding zone directly, bypassing the air barrier problem associated with high-speed rotation of traditional solid grinding wheels
Solution Approach 2:
The grinding wheel features localized hydrophilic structures at specific regions (such as the periphery and grinding contact areas) that enhance fluid attraction and delivery precisely where needed, while other regions maintain different properties for structural integrity
2Manufacturing precision
If the supply of grinding fluid is increased to improve cooling and lubrication, then workpiece quality improves, but the grinding fluid utilization rate decreases
Solution Approach 1:
The grinding wheel's porous structure and hydrophilic surfaces enable it to automatically absorb, retain, and convey grinding fluid to the grinding zone through capillary action and surface tension, eliminating the need for excessive external fluid supply while ensuring adequate cooling and lubrication
Solution Approach 2:
The grinding wheel utilizes capillary pressure and surface tension (hydraulic principles) within its porous structure to drive grinding fluid flow from the wheel interior to the grinding zone, creating an efficient fluid delivery system that maximizes utilization rate
3Device complexity
If conventional grinding wheels without self-conveying structures are used, then the structure is simple, but the overall conveying effect of the grinding wheel on the grinding fluid is insufficient
Solution Approach 1:
The adoption of a porous matrix structure provides inherent fluid conduction pathways without requiring complex external delivery systems, achieving effective fluid conveying while maintaining relatively simple overall wheel construction
Solution Approach 2:
The grinding wheel combines porous matrix material with hydrophilic surface treatments or coatings, creating a composite structure that integrates both structural support and enhanced fluid conduction properties within a unified component
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 bionic grinding wheel improves the infiltration and conveying effect of lubricants, increases the grinding fluid utilization rate, reduces grinding force and temperature, and prolongs the service life of the grinding wheel while enhancing workpiece quality.
Implementation Method 1
Mimicking semi-open capillary channels and a honeycomb structure on skin of Australian thorny devil, prisms with isosceles trapezoidal bottom surfaces are arranged on a matrix in sequence to form directional liquid self-conveying flow channels
Implementation Method 2
a matrix, having a superhydrophobic layer arranged on an outer peripheral surface; and abrasive grains which are prismatic with an isosceles trapezoidal bottom surface, where an axis of the abrasive grain is distributed in a radial direction of the matrix, one end of the abrasive grain in an axial direction is connected to the outer peripheral surface of the matrix, and the other end is of a hydrophilic structure
Data Source
AI summary
The present disclosure provides a bionic Australian thorny devil grinding wheel, a grinding device, and a preparation process, and relates to the field of grinding equipment. For the problem of the poor effect of conveying grinding fluid by a grinding wheel at present, imitating semi-open capillary channels and a honeycomb structure on the skin of the Australian thorny devil, prisms with isosceles trapezoidal bottom surfaces are arranged on a matrix in sequence to form directional liquid self-conveying flow channels and a superhydrophilic honeycomb-like hexagonal distribution structure.