Cup-Shaped Grinding Wheel Flow Splitting for High-Speed Cooling
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Solution Overview
Problem
Existing cup-shaped grinding wheels suffer from poor cooling efficiency during high-rotational speed machining due to the formation of an 'airflow barrier' and centrifugal force, which prevents cooling water from effectively reaching the working surface.
Innovation Solution
A high-rotational speed cup-shaped grinding wheel with a flow splitting structure that divides cooling water into two branches, one delivering water to the outer area and the other to the inner area of the working surface, ensuring comprehensive cooling coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling water is delivered through a radial through-structure water passage channel during high-speed rotation, then cooling water can reach the working surface, but centrifugal force throws most water outward causing poor cooling coverage on the inner area
Solution Approach 1:
The water passage channel is segmented into multiple independent channels (first water passage channel and second water passage channel) that deliver cooling water to different areas of the working surface. The first channel delivers water to the outer area while the second channel delivers water to the inner area, ensuring comprehensive cooling coverage despite centrifugal force during high-speed rotation.
Solution Approach 2:
Different parts of the water passage channel system are designed with different orientations and functions. The first water passage channel is configured to deliver water outward to the outer working surface area, while the second water passage channel is configured to deliver water inward to the inner working surface area, optimizing cooling water distribution for each specific location.
2Quantity of substance
If the water passage channel is a through-structure in radial direction, then cooling water can flow through the blade ring, but most water is thrown outward by centrifugal force leaving the inner wall area insufficiently cooled
Solution Approach 1:
The water passage channel is divided into multiple segments (first and second channels) with different flow directions. This segmentation allows the system to utilize the full cooling water flow while distributing it to different areas, preventing the concentration of all water flow in a single outward direction and ensuring comprehensive cooling coverage.
3Quantity of substance
If cooling water enters the inner radial cavity during high-speed rotation, then cooling water can be supplied to the blade ring, but centrifugal force disperses water into droplets reducing cooling effectiveness
Solution Approach 1:
The water passage channels are pre-configured with specific orientations and positions to deliver cooling water directly to the working surface before centrifugal force can disperse it into droplets. The channels are designed to maintain water flow coherence and direct it precisely where needed, preventing premature dispersion and maintaining cooling effectiveness.
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 flow splitting structure effectively distributes cooling water to both inner and outer areas of the working surface, providing complete coverage and enhancing cooling efficiency during high-speed grinding operations.
Implementation Method 1
a first branch delivers the cooling water to an outer area of the working surface through an interior of the water passage channel under a centrifugal force due to rotation of the base, and a second branch delivers the cooling water to an inner area of the working surface through an exterior of the water passage channel under a centrifugal force due to rotation of the base
Data Source
AI summary
A high-rotational speed cup-shaped grinding wheel includes an annular base, several blades and a flow splitting structure. The blades are fixed on a side of the base at an interval in a circumferential direction to form a blade ring. The side of the blade ring away from the base forms an annular working surface, and two adjacent blades are spaced apart from each other to form a water passage channel for delivering cooling water to the working surface. The flow splitting structure is fixed on the blade ring and splits the cooling water into two branches, where a first branch delivers the cooling water to an outer area of the working surface, and a second branch delivers the cooling water to an inner area of the working surface, and then delivers the cooling water from an inner area of the working surface to an outer side area thereof.