Polishing Device Fluidizing Unit Abrasive Suction
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Solution Overview
Problem
Current polishing methods using air blast devices are inefficient for small workpieces, particularly those with complex shapes or sizes, as they tend to scatter and fail to uniformly polish surfaces due to the use of solid-gas two-phase flows, leading to reduced productivity and poor surface finishing.
Innovation Solution
A polishing device and method that employs a processing vessel with a fluidizing unit to agitate workpieces, an abrasive-feeding unit to supply abrasives, and a suction unit to control airflow, allowing for uniform polishing of all surfaces without scattering, using a fluidizing unit that can be vibrational or rotational, and an abrasive-feeding system that ensures precise abrasive delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air blast device is used for polishing workpieces, then a lot of workpieces can be polished at a time (high productivity), but workpieces having a certain size or weight are scattered due to solid-gas two-phase flow
Solution Approach 1:
The workpiece container is divided into multiple compartments, each capable of holding and polishing workpieces independently. This segmentation prevents workpiece scattering while maintaining the ability to process multiple workpieces simultaneously, resolving the contradiction between productivity and scattering control.
2Ease of manufacture
If auxiliary tumblers are used in tumbler-type blast device, then polishing can be efficiently performed, but the amount of workpieces to be processed is small in regard to the volume of the tumbler
Solution Approach 1:
Multiple tumblers are merged into a single integrated device with multiple compartments. Each compartment functions as an independent tumbler for efficient polishing, while the combined structure increases the total workpiece processing capacity, resolving the contradiction between polishing efficiency and productivity.
3Ease of manufacture
If barrel polishing is used for workpieces with narrow grooves, then general surfaces can be polished, but polishing media do not easily enter the grooves resulting in poor polishing quality
Solution Approach 1:
The polishing media and workpieces are subjected to dynamic motion through rotation and vibration, creating variable flow patterns that enable polishing media to penetrate into narrow grooves and complex geometries, improving manufacturing precision while maintaining ease of manufacture.
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 efficient and uniform polishing of small workpieces without scattering, improving productivity and surface finishing quality by preventing abrasive and workpiece dispersion, and allowing for the processing of diverse shapes and sizes, including hard and brittle materials.
Implementation Method 1
a suction unit that generates an air flow in a direction in which the abrasive passes through the processing vessel, and recovers the abrasive by suction
Implementation Method 2
an opening allowing an abrasive to pass therethrough is formed on the bottom surface portion; a fluidizing unit that fluidizes the workpieces in the processing vessel
Data Source
Figure 1
Figure 2(A)~2(B)
Figure 3(A)~3(C)
AI summary
A polishing device (1) includes a processing vessel (10) into which workpieces are charged, a fluidizing unit that fluidizes the workpieces in the processing vessel, an abrasive-feeding unit (30) that feeds an abrasive into the workpieces, and a suction unit (40) that generates an air flow in a direction in which the abrasive passes through the processing vessel (10), and recovers the abrasive by suction. The abrasive fed from the abrasive-feeding unit (30) is allowed to pass between the workpieces charged into the processing vessel (10) by the air flow generated from the suction unit (40) while coming into contact with the workpieces. Accordingly, the workpieces are polished.