Elastic Abrasive Grain Adhesion via Constricted Flow Compression
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Solution Overview
Problem
Elastic abrasives with abrasive grains adhered to the surface of cores experience a gradual decrease in cutting performance over time due to abrasive grain detachment during re-circulatory blasting, leading to inconsistent treatment quality and increased costs from frequent replacements.
Innovation Solution
A method and device for manufacturing elastic abrasives that utilize a mixer to adhere abrasive grains to cores and a combining unit with constricted flow paths to press the grains onto the cores with adjustable force, ensuring strong and consistent adhesion, allowing for continuous blasting without quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If abrasive grains are adhered to the surface of elastic cores, then the elastic abrasive can absorb shock and prevent matt finish on workpiece surface, but the abrasive grains gradually detach during re-circulatory blasting causing cutting performance to decrease
Solution Approach 1:
The patent applies preliminary action by pre-compressing the abrasive grains against the core surface during the manufacturing process using a pressing device. This preliminary compression ensures strong adhesion before the elastic abrasive is put into service, preventing grain detachment during re-circulatory blasting and maintaining cutting performance stability.
Solution Approach 2:
The patent changes the physical state and adhesion parameters of abrasive grains by applying controlled compression force during manufacturing. By adjusting pressing pressure and duration, the patent optimizes the bonding strength between abrasive grains and elastic cores, resolving the contradiction between maintaining grain attachment and allowing grain replacement for surface renewal.
2Loss of substance
If abrasive grains are pressed strongly onto cores during manufacturing, then adhesion strength increases and grain loss decreases, but the manufacturing process becomes more complex
Solution Approach 1:
The patent employs pneumatic or hydraulic pressing mechanisms to apply controlled compression force to abrasive grains during manufacturing. This approach achieves strong grain adhesion through fluid-powered compression while keeping the manufacturing device relatively simple and easy to control, resolving the contradiction between adhesion strength and device complexity.
3Manufacturing precision
If elastic abrasive is replaced frequently to maintain cutting performance, then treatment quality remains consistent, but productivity decreases and costs increase
Solution Approach 1:
The patent applies preliminary action by pre-compressing abrasive grains during manufacturing to ensure long-lasting adhesion. This preliminary strengthening allows the elastic abrasive to maintain cutting performance throughout its service life, eliminating the need for frequent replacements and ensuring continuous blasting operations with consistent treatment quality.
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 solution enables prolonged, stable cutting performance and reduced costs by maintaining a constant treatment state and minimizing abrasive grain loss, allowing for continuous operation without frequent abrasive replacements.
Implementation Method 1
a mixer (11) configured to mix the cores (71) and the abrasive grains (72) together and to adhere the abrasive grains (72) to the surface of the cores (71)
Implementation Method 2
a combining unit (12) for executing a combining step in which the abrasive grains (72) are pressed against and combined to the surface of the cores (71) by passing the cores (71) that have completed the mixing process through a constricted flow path (121) with the cores (71) in an aggregated state so as to compress aggregate bodies of the cores (71)
Implementation Method 3
By performing blasting employing such elastic abrasives, the shock when impacting a workpiece is absorbed by the elasticity of the cores
Implementation Method 4
passing the cores (71) that have completed the mixing process through a constricted flow path (121) with the cores (71) in an aggregated state so as to compress aggregate bodies of the cores (71)
Data Source
AI summary
A re-circulatory blasting device obtained is capable of performing stable treatment for a prolonged period of time even in cases in which an elastic abrasive employed has abrasive grains adhered to the surface of elastic cores. An elastic abrasive regeneration device provided to the blasting device regenerates elastic abrasive employed for re-circulation. The elastic abrasive regeneration device includes a mixer and a combining unit. Recovered abrasive fed in from an abrasive recovery section is mixed in the mixer with abrasive grains fed in from an abrasive grain feeder, and the abrasive grains are adhered to the surface of the cores of the recovered abrasive. In the combining unit, the abrasive grains are pressed against and combined to the surface of the cores by passing an aggregated state of the recovered abrasive mixed by the mixer along a constricted flow path having a flow path cross-sectional area that gradually narrows.