Wire Thread Insert Tool With Replaceable Entraining Blade
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Solution Overview
Problem
Existing tools for installing or removing wire thread inserts face significant wear issues, leading to high maintenance costs and the need for frequent tool replacement, as well as limitations in the number of threaded elements that can be used due to design constraints.
Innovation Solution
A tool with a spindle body, an axially displaceable actuator, and an entraining blade that can be manually or automatically actuated to engage and disengage with the wire thread insert, allowing for selective extension and retraction of the engaging end, which reduces wear and maintenance efforts by enabling tool-free replacement of the entraining blade and spindle body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entraining blade is fixedly arranged in the installation spindle using bolts or pins, then the entraining blade can be securely held during operation, but the maintenance effort increases and tool replacement becomes necessary when the blade wears out
Solution Approach 1:
The entraining blade is designed to be movable relative to the installation spindle, allowing it to be easily removed and replaced without tools. The blade can be axially displaced out of the spindle for replacement and automatically returns to its working position, transforming a static fixed connection into a dynamic removable one that simplifies maintenance while maintaining operational reliability
Solution Approach 2:
The installation tool is divided into separable components: the installation spindle, the entraining blade, and the actuator. This segmentation allows the entraining blade to be independently replaced without affecting the spindle or other components, reducing maintenance complexity and enabling quick blade replacement when wear occurs
2Reliability
If the installation tang projects radially inwards to interlock with the radial recess, then the wire thread insert can be securely installed, but the threaded elements can only be screwed in up to the installation tang, limiting the number of possible threaded elements
Solution Approach 1:
The engagement mechanism is moved from a radial projection to an axial engagement system. The installation tang engages with the axial recess of the entraining blade rather than projecting radially, allowing threaded elements to extend beyond the installation tang in the axial direction, thereby increasing versatility while maintaining secure installation
Solution Approach 2:
The axial recess in the entraining blade acts as an intermediary engagement feature between the installation tang and the wire thread insert. This intermediary axial engagement mechanism replaces the direct radial interlocking, enabling both secure installation and extended threaded element capability
3Ease of operation
If the entraining blade projects beyond the axial end face or pivots radially outwards, then the engaging end can engage the wire thread insert, but extensive maintenance effort and use of tools is necessary when the blade wears out
Solution Approach 1:
The entraining blade is designed with axial movability, allowing it to be easily displaced out of the installation spindle for replacement. This dynamic design eliminates the need for tools and complex procedures, enabling quick blade replacement by simply axially displacing the worn blade and inserting a new one
Solution Approach 2:
The entraining blade is extracted from the installation spindle as a separate, independently replaceable component. The blade can be completely removed from the axial recess without affecting the spindle or other components, allowing maintenance personnel to replace only the worn blade rather than the entire tool assembly
4Reliability
If the complete installation tool must be replaced when the installation spindle or entraining blade wears out, then functional reliability is maintained, but maintenance costs increase and productivity decreases
Solution Approach 1:
The installation tool is segmented into replaceable modules: the installation spindle, entraining blade, and actuator. This modular segmentation allows individual components to be replaced independently based on their wear patterns, preventing the need to replace the entire tool assembly and thereby improving productivity and reducing costs
Solution Approach 2:
The design enables selective replacement of only the worn entraining blade or spindle while retaining and recovering the still-functional components. The actuator and other parts can be reused, reducing waste and maintenance costs compared to replacing the complete tool assembly
Data Source
AI summary
A tool for installing or removing a wire thread insert. This tool includes a spindle body having an actuator which can be moved axially therein. The actuator interacts with an entraining blade. By the axial movement of the actuator, the entraining blade can be extended out of the axial recess and retracted back into it.