Retention Knob Socket Tool With Locking Balls for High-Torque Removal
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Solution Overview
Problem
Existing tools for installing and removing retention knobs in CNC tooling machines often cause damage to the knobs and pose safety risks due to high torque requirements and the need for precise alignment, leading to inefficient and hazardous operations.
Innovation Solution
A dual mode socket tool with a tubular sleeve and a tubular body featuring locking ball retainer sockets and a drive tool cavity, allowing for secure attachment and removal of retention knobs with enhanced torque application and reduced risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an open-ended wrench is used to remove the retaining knob, then the operation can be performed, but the flat surfaces of the retaining knob are rounded over time causing damage and shortening its useful life
Solution Approach 1:
The patent introduces a specialized removal tool as an intermediary device between the operator and the retaining knob. This tool features a gripping mechanism that engages with the retaining knob's flange section, distributing the removal forces across multiple contact points rather than concentrating them on the small wrenching flats. This intermediary tool prevents direct contact between conventional wrenches and the knob surfaces, thereby eliminating the rounding damage while facilitating safe and effective removal.
2Force
If a wrench is used to apply high torque to the retaining knob, then the retaining knob can be removed, but the operator is at risk of injury since the wrench can easily slip off
Solution Approach 1:
The specialized removal tool serves as a protective intermediary that absorbs and directs the high torque forces. The tool's design includes a robust gripping mechanism and a handle that provides leverage, allowing operators to apply necessary torque without the wrench slipping off the retaining knob's small flats. This intermediary device transfers the force application away from the operator's hands, significantly reducing injury risk while maintaining effective torque transmission.
3Force
If a crescent wrench is used to loosen the retaining knob, then the loosening can be achieved, but a two-step operation is required followed by manual removal to prevent the knob from falling
Solution Approach 1:
The patent combines the loosening and removal functions into a single integrated tool and operation. The specialized removal tool is designed to securely grip the retaining knob and provide controlled extraction in one continuous motion, eliminating the need for separate loosening and removal steps. This merged approach simplifies the overall operation while maintaining safety and effectiveness, reducing both the number of steps and the potential for error.
4Ease of operation
If a pull stud removal device is used as disclosed in U.S. Pat. No. 6,360,634B1, then removal can be facilitated, but the device is cumbersome to use requiring precise alignment in a sideways motion
Solution Approach 1:
The patent inverts the traditional approach by designing a tool that approaches the retaining knob from the end opposite to where conventional tools engage. Instead of requiring sideways alignment with the wrenching flats, the specialized removal tool engages with the flange section from the end, allowing for more forgiving alignment in the longitudinal direction. This inverted approach simplifies the alignment requirement while maintaining effective removal capability.
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 enables secure and efficient installation and removal of retention knobs with reduced risk of damage and operator injury, improving operational safety and efficiency by distributing torque effectively and providing a stable gripping surface.
Implementation Method 1
the first thicker portion bears against the plurality of balls forcing the plurality of balls inwardly when the tubular body is translated rearwardly into an inward lock position
Implementation Method 2
A tubular body, is slidingly held in the tubular sleeve
Data Source
AI summary
A retention knob tool. A tubular body, is held in the tubular sleeve, and symmetrically formed around an axis. The tubular body also has an internal bore. Four locking ball retainer sockets are formed in the tubular body. A retention knob aperture is recessed within a top plate. Four balls are movably held in the ball retainer sockets. A tubular end stop is affixed to the tubular body rearward end. A drive tool cavity is recessed within the tubular body rearward end. The sleeve forward end includes a recessed circumferential portion bounded by a first thicker portion of the inside wall, where the first thicker portion bears against the balls when the tubular body is translated rearwardly into an inward lock position and the inward force is removed from the plurality of balls when the tubular body is extended forwardly into a release position.