Retention Knob Socket Tool for High-Torque Removal Without Damage
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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 operator injury and reduced tool life.
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 while minimizing damage, using a socket wrench for enhanced torque application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an open-ended wrench is used for removal of a retaining knob, then the retaining knob can be removed, 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 an intermediary device (retaining knob removal tool) that mediates between the operator and the retaining knob. This tool features a socket that interfaces with the knurled surface of the retaining knob, distributing pressure across a larger area and preventing direct contact between wrenches and the knob's flat surfaces, thereby eliminating surface rounding while enabling effective removal
Solution Approach 2:
The removal tool is segmented into distinct functional components: a socket portion that contacts the retaining knob's knurled surface, a shaft for torque transmission, and a drive interface for the operator. This segmentation allows each component to be optimized for its specific function, with the socket specifically designed to protect the retaining knob surface while the shaft transmits torque efficiently
2Ease of operation
If a wrench is used to loosen the retaining knob, then the retaining knob can be loosened, but the wrench can easily slip off causing injury to the operator
Solution Approach 1:
The removal tool serves as a safe intermediary between the operator and the retaining knob. The tool's socket is specifically designed to engage the knurled surface of the retaining knob with a large contact area, preventing slippage. The shaft portion provides a controlled interface for applying torque, eliminating the risk of wrench slippage and operator injury while enabling effective loosening of the retaining knob
3Reliability
If a pull stud removal device is used for removal, then the retaining knob can be removed, but the device is cumbersome to use requiring precise alignment
Solution Approach 1:
The removal tool is designed with universal compatibility, featuring a socket that can engage the knurled surface of various retaining knob sizes and a drive interface that accommodates standard driver bits. This multi-functionality eliminates the need for precise alignment and specialized tools for different retaining knob types, allowing the same tool to effectively remove any retaining knob in the system
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 securely attaches and removes retention knobs with reduced risk of damage and operator injury, enabling efficient and safe handling of high-torque operations in CNC machines.
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
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.