Double-Action Friction Stir Tool Cleaning for Shoulder Surface Buildup
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Solution Overview
Problem
Existing double-action friction stir joining systems face challenges in effectively cleaning the inner circumferential surface of the shoulder member, where material from the joined object adheres, limiting the system's efficiency and requiring complex configurations.
Innovation Solution
A double-action friction stir joining system incorporating a cleaning mechanism with a dressing member, such as a cutting tool or wire brush, and a robot that contacts the inner surface of the shoulder member, facilitated by a control device to manage the movement and rotation of the pin and shoulder members, allowing for efficient removal of adhered material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cleaning mechanism with a dressing member is added to the double-action friction stir joining system, then the cleaning effectiveness of the shoulder member's inner surface is improved, but the device complexity increases
Solution Approach 1:
The dressing member is inserted into the interior space of the shoulder member, utilizing the existing structural cavity. This nesting approach allows the cleaning function to be integrated within the existing device footprint without adding external complexity, as the dressing member operates within the already-present interior space of the shoulder member
Solution Approach 2:
The pin member is utilized for dual purposes: both for the friction stir joining operation and for assisting in the cleaning operation. By making the pin member reciprocatable within the shoulder member's interior space, the system uses its own components to perform the cleaning function, reducing the need for entirely separate cleaning mechanisms
2Reliability
If the pin member is made reciprocatable within the shoulder member's interior space for cleaning, then the cleaning capability is improved, but the device complexity increases
Solution Approach 1:
The pin member is designed to perform multiple functions: it serves as the primary tool for friction stir joining and simultaneously acts as a cleaning element by reciprocating within the shoulder member's interior space. This multi-functionality eliminates the need for a completely separate cleaning mechanism, thereby improving cleaning capability while minimizing increases in device complexity
Solution Approach 2:
The cleaning action is nested within the existing structural framework by having the pin member move within the interior space of the shoulder member. This nesting allows the cleaning function to be achieved using the existing device geometry without requiring additional external components or mechanisms
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 system enables simple and effective cleaning of the shoulder member's inner surface, improving the joining process by ensuring the removal of adhered material, thus enhancing the system's operational efficiency and reliability.
Implementation Method 1
a dressing member (111) that removes a material of a to-be-joined object (60) adhered to an inner circumferential surface of a shoulder member (12)
Data Source
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AI summary
A double-action friction stir joining system is provided, which includes a double-action friction stir joining device (101), a cleaning mechanism (110) having a dressing member (111), a robot (120), and a control device (130). The double-action friction stir joining device (101) includes a first rotary driver (57) configured to rotate a pin member (11) and a shoulder member (12), and a tool driver (53) configured to reciprocate the pin member (11) and the shoulder member (12). The control device (130) is adapted to (A) operate the tool driver (53) so that the pin member (11) is thrusted into the shoulder member (12), (B) operate the first rotary driver (57) so that the shoulder member(12) rotates, and (C) operate the robot (120) so that the robot (120) holds the double-action friction stir joining device (101) and the dressing member (111) contacts an inner circumferential surface of the shoulder member (12).