Swaging Tool Rotary Stroke Mechanism Confined Space
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Solution Overview
Problem
Hydraulic swaging tools are complex and large due to the need for fluid ports and circulation systems, making them less versatile and difficult to use in limited workspaces.
Innovation Solution
A compact swaging tool design that uses a rotatable rotary member to expand and contract the space between a swaging member and a holding member, applying a tensile load to break off a pintail without the need for hydraulic mechanisms, allowing for a simpler and more compact configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hydraulic swaging tool is used, then the swaging function is achieved, but the device complexity and size increase due to fluid ports and circulation systems
Solution Approach 1:
The patent extracts and removes the hydraulic system (fluid ports, circulation systems, pistons) from the swaging tool, replacing it with a manual rotary operation. This eliminates the complex hydraulic infrastructure while retaining the core swaging function through a simplified mechanical linkage between rotary operation and collar compression.
Solution Approach 2:
The patent replaces the hydraulic mechanical system with a direct manual mechanical operation. Instead of using fluid pressure to drive a piston, the operator directly rotates a handwheel that converts rotational motion into linear compression of the collar through a threaded mechanism, substituting complex hydraulic mechanics with simple manual mechanics.
2Reliability
If a hydraulic swaging tool is used, then the swaging function is achieved, but the tool size becomes large making it difficult to use in limited work spaces
Solution Approach 1:
The patent extracts and removes the bulky hydraulic components (cylinder, fluid reservoir, circulation pipes) from the tool structure. The remaining manual operation mechanism occupies minimal space, allowing the tool to be compact and suitable for confined work areas while maintaining the essential swaging capability.
Solution Approach 2:
The patent employs a nested structure where the collar is positioned within the tool body, and the compression mechanism is integrated inside the tool housing. The handwheel and threaded rod are contained within the tool structure, creating a compact nested arrangement that minimizes the overall tool volume while preserving functionality.
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 tool effectively swages a collar to a fastening pin without twisting the pintail, ensuring it breaks at a predetermined load, and can be easily used in confined spaces due to its reduced size and simplified design.
Implementation Method 1
The stroke mechanism includes a rotatable rotary member and is configured to convert a rotation of the rotary member to an expansion and contraction of the space between the holding member and the swaging member
Data Source
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AI summary
A swaging tool (160) for fastening a portion to be fastened, wherein the swaging tool (160) is configured to move a collar (8) fitted to a pintail (7c) side of a fastening pin (7) toward a pinhead (7a) side so as to bring the collar (8) into contact with the portion to be fastened, the pinhead (7a) of the fastening pin (7) being positioned on one side of the portion to be fastened through which the fastening pin (7) is inserted and the pintail (7c) of the fastening pin (7) being positioned on another side of the portion to be fastened, to swage the collar (8) to the fastening pin (7) with the collar (8) being in contact with the portion to be fastened, and to apply a tensile load to the pintail (7c) to break off and remove the pintail (7c), the swaging tool (160) comprising a holding member (12) configured to hold the pintail (7c) of the fastening pin (7), a swaging member (161) having a swaging die (165) formed therein, wherein the swaging die (165) is configured to come into contact with and swage the collar (8), and a stroke mechanism (163) which is provided adjacent to the holding member (12) and the swaging member (161) and is configured to expand and contract a space between the swaging member (161) and the holding member (12). The stroke mechanism (163) includes a rotatable rotary member (175) and is configured to convert a rotation of the rotary member (175) to an expansion and contraction of the space between the holding member (12) and the swaging member (161) and to restrict a rotation of the swaging member (161) and a rotation of the holding member (12) .