Abrasive Grain Jet Grinding Device with Dense Blade Impeller
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Solution Overview
Problem
Existing abrasive grain jet grinding devices fail to eject abrasive grains in a densely aggregated state, leading to inefficient polishing due to wide blade spacing on the impeller, resulting in scattered ejection and low polishing quality.
Innovation Solution
The device features an impeller with densely arranged, overlapping blades and flow-straightening blades that form numerous storage chambers for abrasive grains, combined with a nozzle having a triangular cross-sectional shape to ensure continuous and dense ejection of abrasive grains as a cluster, enhancing polishing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If wide spacing between blades on the impeller is used, then the device structure is simpler and easier to manufacture, but the abrasive grains are ejected intermittently and scattered, resulting in poor polishing quality
Solution Approach 1:
The impeller blades are divided into multiple segments with narrow spacing, creating numerous storage chambers around the circumferential surface. This segmentation allows abrasive grains to be stored and ejected continuously in dense clusters, improving polishing quality while managing structural complexity through systematic division
Solution Approach 2:
The invention adds the dimension of storage chambers formed by the narrow blade spacing, transforming the ejection process from intermittent (single dimension of rotation) to continuous (adding the dimension of multiple storage zones). This enables dense abrasive grain clusters to be maintained throughout the rotation cycle
2Manufacturing precision
If equally spaced blades on the impeller are used, then the device structure is simpler, but the abrasive grains are not densely aggregated, causing repulsion and bouncing instead of effective grinding
Solution Approach 1:
The blades are arranged with locally optimized narrow spacing to create storage chambers that maintain dense abrasive grain aggregation. This local quality enhancement ensures that abrasive grains remain closely aggregated in specific zones, preventing repulsion and bouncing while achieving effective surface grinding
Solution Approach 2:
The storage chambers formed by densely spaced blades preliminarily aggregate abrasive grains before ejection. This preliminary aggregation ensures that grains are already densely clustered when ejected, eliminating the need for post-ejection aggregation and preventing repulsion on impact
3Productivity
If the number of storage chambers and open slits is increased, then continuous and dense ejection of abrasive grains is achieved, but the impeller structure becomes more complex
Solution Approach 1:
The impeller is segmented into numerous blades with narrow spacing, creating multiple storage chambers and open slits around the circumferential surface. This segmentation increases the number of ejection points, enabling continuous abrasive grain delivery and improving polishing efficiency while distributing structural complexity across multiple identical elements
Solution Approach 2:
The increased number of storage chambers and open slits ensures continuous ejection of abrasive grains throughout the impeller rotation. This continuity eliminates idle periods between grain clusters, maintaining constant polishing action and maximizing productivity
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
This configuration results in a smooth and glossy workpiece surface by ensuring continuous and dense ejection of abrasive grains, improving polishing efficiency and quality by minimizing dull portions.
Implementation Method 1
an impeller that includes blades held between a shaft-side disk rotatable by a drive shaft and an open disk having an opening at a center thereof
Implementation Method 2
grind and polish the surface of a workpiece by spraying abrasive grains onto the workpiece
Data Source
AI summary
An abrasive grain jet grinding device having a belt partially wrapped around an impeller with blades between a shaft-side disc and an open disc and an open peripheral surface between the blades, a nozzle tangential to the disk at the point of separation between the belt and the peripheral surface, wherein the blades held between the shaft-side disc and the open disc are formed from thin plates to finely partition the circumference of the discs, are inclined forward in the direction of rotation of the discs, are provided densely so that multiple adjacent blades overlap each other, and are set with narrow gaps between the blades to form a large number of storage chambers for the abrasive grains.