Double-Action Friction Stir Tool Cleaning for Shoulder Buildup
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Solution Overview
Problem
Existing double-action friction stir joining systems face challenges in effectively cleaning the inner and outer surfaces of the pin and shoulder members, leading to adhered materials that can affect the joining process.
Innovation Solution
A double-action friction stir joining system incorporating a cylindrical pin and shoulder member configuration, a dressing member, and a robot-controlled cleaning mechanism that includes rotary drivers and a tool driver for precise surface contact and removal of adhered materials.
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 adhered materials is improved, but the device complexity increases
Solution Approach 1:
The dressing member is inserted into the hollow cylindrical shoulder member, creating a nested structure where the cleaning mechanism is contained within the existing tool component. This allows the cleaning function to be integrated without significantly increasing external device complexity
Solution Approach 2:
The dressing member acts as an intermediary element that contacts the inner circumferential surface of the shoulder member to remove adhered materials. This mediator enables effective cleaning while maintaining a relatively simple overall system structure
2Ease of operation
If the pin member and shoulder member are made hollow cylindrical with the pin inserted into the shoulder, then the cleaning accessibility is improved, but the manufacturing complexity increases
Solution Approach 1:
Instead of making the outer shell solid and adding separate cleaning mechanisms, the design inverts the approach by making both the pin and shoulder members hollow cylindrical structures. This allows the dressing member to access and clean the inner surfaces directly, improving cleaning accessibility while using standard hollow cylindrical manufacturing processes
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 efficient cleaning of adhered materials from the inner and outer surfaces of the pin and shoulder members, ensuring a reliable joining process with a simple and effective configuration.
Implementation Method 1
a dressing member... configured to contact an inner circumferential surface of the shoulder member... a material of an object to be joined adhered (agglutinated) on the inner circumferential surface of the shoulder member can be removed (cleaned)
Data Source
AI summary
A double-action friction stir joining system, which includes a double-action friction stir joining device, a cleaning mechanism having a dressing member, a robot, and a control device. The double-action friction stir joining device includes a first rotary driver configured to rotate a pin member and a shoulder member, and a tool driver configured to reciprocate the pin member and the shoulder member. The control device is adapted to (A) operate the tool driver so that the pin member is thrusted into the shoulder member, (B) operate the first rotary driver so that the shoulder member rotates, and (C) operate the robot so that the robot holds the double-action friction stir joining device and the dressing member contacts an inner circumferential surface of the shoulder member.