Cavitation Processing Apparatus with Direction Changing Member
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Solution Overview
Problem
Conventional cavitation processing methods struggle to consistently and efficiently deliver cavitation effects, such as residual stress, to the exact target position on complex or cylindrical components, often requiring prolonged processing times and multiple adjustments.
Innovation Solution
A cavitation processing apparatus and method that includes a nozzle, a direction changing member, and a rotary shaft to redirect cavitation fluid flow, ensuring even distribution of cavitation effects by colliding the fluid with the workpiece's upper surface, then redirecting it through a concave-shaped direction changing member to impact the inner surfaces, providing both primary and secondary cavitation effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cavitation fluid is directly collided with the workpiece or merely changed in flow direction, then the cavitation processing can be performed, but the cavitation effect is not properly given to the exact target position and processing time increases
Solution Approach 1:
The invention divides the cavitation fluid flow into multiple segmented streams using partition walls within the collection chamber. This segmentation allows the fluid to be distributed to multiple target positions simultaneously, improving positioning accuracy while reducing the total processing time required to treat the entire workpiece surface.
Solution Approach 2:
The invention introduces a vertical dimension by ejecting cavitation fluid upward from the collection chamber toward the workpiece surface, rather than only horizontal flow. This multi-dimensional fluid distribution enables simultaneous treatment of multiple areas, improving both positioning accuracy and processing efficiency.
2Adaptability or versatility
If cavitation fluid flow direction is changed using a deflection tool, then cavitation processing inside complex shape workpieces is enabled, but the cavitation effect is not evenly distributed on cylindrical surfaces
Solution Approach 1:
The collection chamber is designed with a universal structure that can accommodate different workpiece types (cylindrical, complex shapes, etc.) through rotation. The partition wall configuration and fluid ejection mechanism are designed to adapt to various geometries, enabling the same apparatus to achieve even cavitation distribution across different workpiece forms.
Solution Approach 2:
The invention introduces rotational motion of the workpiece around the nozzle assembly, transforming a static single-point treatment system into a dynamic multi-point treatment system. This rotation ensures uniform distribution of cavitation effects around cylindrical surfaces and enables comprehensive coverage of complex geometries.
3Manufacturing precision
If the number of processing operations is increased to achieve proper cavitation effect, then the cavitation effect can be given to the target position, but the processing time becomes excessively long
Solution Approach 1:
By segmenting the cavitation fluid flow into multiple streams directed at different target positions simultaneously, the system achieves precise cavitation delivery to multiple areas in parallel, eliminating the need for sequential processing operations and thereby improving productivity while maintaining precision.
Solution Approach 2:
The continuous rotation of the workpiece during cavitation fluid ejection ensures that the useful cavitation action continues uninterrupted across the entire workpiece surface. This continuous multi-point treatment replaces discrete sequential operations, maintaining high precision while significantly reducing total processing time.
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 approach allows for even distribution of cavitation effects on both the surface and inner parts of components, reducing processing time and maintaining compressive stress without excessive load, as demonstrated by verification tests showing increased compressive stress and dimple formation on the workpiece surfaces.
Implementation Method 1
The cavitation fluid ejected from the nozzle in the liquid contains cavitation bubbles
Implementation Method 2
a direction changing member configured to change a flow direction of the cavitation fluid that collided with the workpiece to be branched toward inside
Data Source
AI summary
Provided is a cavitation processing apparatus for providing cavitation effects such as residual stress evenly on the surface and inner part of the component. The cavitation processing apparatus includes: a nozzle that ejects cavitation fluid to a workpiece; a direction changing member that changes a flow direction of the cavitation fluid that collided with the workpiece to be branched toward inside; a driving apparatus including a rotary shaft, the driving apparatus that rotates the workpiece together with the rotary shaft; and a support member supporting one end of the rotary shaft.