Cavitation Jet Guidance for Groove Bottom Surface Processing
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Solution Overview
Problem
Existing cavitation processing methods struggle to effectively process the bottom portion of grooves on workpieces, as the jet flow is not adequately directed to collide with these areas.
Innovation Solution
A cavitation processing method and apparatus that utilize a guide member with a rectifying portion and a closing portion to redirect the jet flow from a nozzle, ensuring it collides with the bottom portion of grooves on the workpiece.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional cavitation processing method is used without a guide member, then the jet can be ejected directly at the workpiece surface, but the jet flow cannot adequately collide with the bottom portion of grooves due to flow direction limitations
Solution Approach 1:
A guide member is introduced as an intermediary component between the jet and the workpiece. The guide member includes a rectifying portion that receives the jet and redirects it toward the groove bottom, and a closing portion that closes the front end of the rectifying portion to force the jet to change direction and collide with the groove bottom surface.
Solution Approach 2:
The guide member utilizes three-dimensional space by extending the rectifying portion in the front-rear direction and positioning the closing portion at the front end. This spatial arrangement allows the jet to be redirected from its original path into the groove, achieving coverage of previously inaccessible areas through dimensional positioning.
2Manufacturing precision
If the jet is ejected directly at the workpiece without flow direction control, then the processing setup is simple, but the jet cannot be effectively introduced into the groove portion to process the bottom area
Solution Approach 1:
The guide member serves as a mediating structure that controls jet flow direction. The rectifying portion acts as a flow channel that guides the jet, while the closing portion at the front end forces the jet to change direction and enter the groove, ensuring accurate introduction to the groove bottom.
Solution Approach 2:
The guide member is designed with specific local structures: the rectifying portion has a particular shape to control flow, and the closing portion is positioned at a specific location (front end) to achieve the desired flow redirection. These localized structural features enable precise jet direction control without requiring complex overall system redesign.
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 efficient cavitation processing on the bottom portions of grooves, applying compressive residual stress and improving surface processing of workpieces with complex geometries.
Implementation Method 1
a jet of a processing liquid of cavitation
Implementation Method 2
ejecting the jet from the nozzle
Implementation Method 3
cause the jet to collide with the closing portion for changing a flow direction of the jet
Implementation Method 4
a jet of a fluid containing a cavity (bubble) is caused to collide with the workpiece to process the surface of the workpiece by an impact force when the cavity collapses
Data Source
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AI summary
The cavitation processing method, includes: immersing a nozzle (23) that ejects a jet (C1) of a processing liquid (11) of cavitation, a workpiece (50a) including a groove portion (53) extending in a left-right direction and having edge portions (56) at a front and a rear as viewed from the nozzle (23), and a guide member (30) including a rectifying portion (32) that flows the jet (C1) in a front-rear direction and a closing portion (33) that closes a front end of the rectifying portion (32) in the processing liquid (11); moving the closing portion (33) to close to a front edge portion (56); ejecting the jet (C1) from the nozzle (23); and introducing the jet (C1) to the rectifying portion (32) from the rear to cause the jet (C1) to collide with the closing portion (33) for changing a flow direction of the jet (C1) to cause the jet (C1) to collide with a bottom portion (54) of the groove portion (53).