Flip Socket Nut Removal Tool With Canted Coil Springs
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Solution Overview
Problem
Existing nut removal tools face challenges with damaged or oversized nuts, as they often require excessive torque, leading to damage, stripping, or impossibility of removal, and are limited in size versatility, with issues of tool breakage, chattering, and potential damage to adjacent surfaces.
Innovation Solution
A flip socket nut removal tool featuring a housing with canted coil springs and interchangeable cages with three-lobed cams, allowing for the removal of differently sized nuts using a single tool, with the canted coil springs providing a constant deflection range for secure engagement and reduced point loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single nut removal tool is used for different sized nuts, then tool versatility is improved, but the tool may not perfectly conform to each nut size causing chattering and stripping
Solution Approach 1:
The tool is segmented into a housing and multiple interchangeable cages, each cage designed for specific nut sizes. This allows the user to select the appropriate cage for each nut size, ensuring perfect conformance while maintaining tool versatility through modular design.
Solution Approach 2:
The housing provides universal functionality by accommodating multiple different-sized cages through standardized interfaces (grooves and lips). This multi-functional design allows a single tool to handle various nut sizes without chattering or stripping issues.
2Object-affected harmful factors
If air impact tool is used for nut removal, then operator safety is improved, but shock impact can damage the nut and adjacent surfaces
Solution Approach 1:
The canted coil spring is positioned beforehand to cushion the shock impact between the cage and the nut. This spring absorbs the impact forces, preventing damage to the nut and adjacent surfaces while maintaining operator safety benefits of air impact tools.
Solution Approach 2:
The canted coil spring acts as an intermediary element between the air impact tool and the nut. It mediates the shock impact by providing a compliant interface that reduces peak forces while still transmitting sufficient torque for nut removal.
3Force
If excessive torque is applied to remove damaged nuts, then removal capability is improved, but the nut and tool interface becomes further stripped and rounded
Solution Approach 1:
The cage is designed with dynamic engagement features including cam surfaces and flexible elements that adapt to the nut geometry during rotation. This dynamic design allows excessive torque to be applied for removal while the flexible interface prevents further stripping and rounding of the fastener.
Solution Approach 2:
The tool interface parameters are changed through the use of cam surfaces and flexible engagement elements that allow variable contact pressure and angle. This enables the application of high torque while maintaining optimal contact geometry to prevent further damage to the fastener.
4Ease of operation
If multiple small parts are used in the cartridge, then gripping capability is improved, but the parts are prone to breakage
Solution Approach 1:
Multiple gripping elements (jaws) are merged into a single integrated cage structure formed as one piece. This combining of multiple parts into a unified component maintains the gripping capability while eliminating the breakage issues associated with multiple separate small parts held together by retaining rings or clips.
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
Enables efficient and safe removal of variously sized nuts without damaging the tool or adjacent surfaces, reducing the risk of breakage and chattering, while accommodating different nut sizes within a thin, shock-absorbing housing.
Implementation Method 1
canted coil springs providing a constant deflection range for secure engagement and reduced point loading
Implementation Method 2
canted coil springs providing a constant deflection range
Implementation Method 3
interchangeable cages with three-lobed cams
Data Source
AI summary
A tool for removing a first nut and a differently sized second nut includes a housing, a first cage and a second cage, and a first canted coil spring and a second canted coil spring. The illustrative housing has a top surface, a first interior sidewall, a bottom surface and a second interior sidewall. Each illustrative interior sidewall includes a lobed cam and a groove. Each cage includes jaws that grip the respective not and each cage also includes a groove. The canted coil springs are disposed in the grooves corresponding to the cage and the housing.