High-Speed Cup Wheel Cooling Structure for Grinding Stability
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Solution Overview
Problem
Existing cup-shaped grinding wheels suffer from poor cooling efficiency due to the centrifugal force causing cooling water to be thrown out towards the outer circle, resulting in inadequate cooling of the working surface near the inner circle.
Innovation Solution
A cooling structure for a high-speed cup-shaped wheel featuring a base and a blade ring with water channel groups, each containing inner water channels with gradually increasing widths, ensuring that cooling water covers the entire working surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the water passage channel has a through structure in the radial direction of the blade ring, then cooling water can be delivered to the working surface, but most cooling water is thrown out toward the outer circle side under centrifugal force, resulting in poor cooling effect
Solution Approach 1:
The water passage channel is divided into multiple segments along the radial direction, with each segment having a specific function. The channel is divided into a first water passage channel (closer to inner circle) and a second water passage channel (closer to outer circle), allowing different portions of cooling water to be directed to different regions of the working surface, preventing complete loss of cooling water effectiveness.
Solution Approach 2:
Different regions of the blade ring are provided with water passage channels having different characteristics. The first water passage channel has a cross-sectional area that is a certain multiple of the second water passage channel, creating local variations in water flow distribution. This ensures that cooling water is preferentially directed to the inner circle region where it is most needed, while still providing cooling to the outer circle region.
2Temperature
If cooling water flows along the inner circle sidewall to the working surface, then the inner circle region can be cooled, but the water in bundle state is easily atomized by airflow barrier, attenuating cooling effect
Solution Approach 1:
The water passage channel is segmented into multiple channels (first and second water passage channels) with different orientations and functions. The first water passage channel is designed to deliver water to the inner circle region while the second delivers to the outer circle region, ensuring reliable cooling water delivery to each region through dedicated pathways that reduce atomization effects.
3Loss of energy
If the outer side of the blade ring is blocked to prevent water loss, then cooling water gathers at the outer circle region, but the inner circle region still has insufficient cooling water
Solution Approach 1:
Instead of blocking the outer side entirely, the water passage channel is segmented into first and second channels with different functions. The first channel delivers cooling water to the inner circle region while the second channel manages water flow near the outer circle, allowing cooling water to reach both regions effectively without complete blockage.
Solution Approach 2:
Different regions are provided with water passage channels having different cross-sectional areas and characteristics. The first water passage channel has a larger cross-sectional area to ensure sufficient cooling water delivery to the inner circle region, while the second water passage channel has a smaller cross-sectional area appropriate for the outer circle region, creating local optimization of cooling water distribution.
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 proposed cooling structure improves cooling efficiency and utilization of cooling water, ensuring sufficient cooling across the entire working surface, thereby enhancing grinding stability and quality, and enabling high-speed grinding operations.
Implementation Method 1
When the cup-shaped grinding wheel rotates at a high speed, most of the cooling water entering the blade ring via an inner radial cavity will be thrown out toward the outer circle side of the blade ring via the water passage channel under a centrifugal force
Data Source
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AI summary
The present invention relates to a cooling structure of a high-speed cup-shaped wheel. The cooling structure includes a base and a blade ring, wherein the blade ring is arranged on the base and is fixedly connected to the base; the blade ring is provided with a plurality of water channel groups, which is sequentially arranged at intervals in a circumferential direction of the blade ring; and each of the water channel groups includes two or more inner water channels, which are sequentially arranged at intervals in the circumferential direction of the blade ring, the width of each of the two or more inner water channels in a radial direction of the blade ring being gradually increased. Compared with the prior art, the cooling structure of the present invention allows cooling water to cover the entire working surface to improve the cooling efficiency for the working surface and also to effectively improve the utilization efficiency of the cooling water, and can also reduce the influences from machining parameters to advantageously improve the grinding stability and grinding quality, thereby enabling the cup-shaped wheel to adapt to high-speed grinding.