Biaxial Motorized Nut Runner for Long Threaded Rods
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Solution Overview
Problem
Existing handheld power tools are unable to efficiently rotate fasteners along long threaded rods, as they cannot accommodate rods that protrude beyond the length of their sockets, and existing solutions often result in accessories separating from the rotary tool.
Innovation Solution
A handheld motorized tool with a housing, motor, power source, and a through-bore gear that allows for the rotation of threaded fasteners along threaded rods, featuring a pinion and gear system that enables the fastener to slide along the rod without intersecting the tool's components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing handheld power tools are used to rotate fasteners along threaded rods, then the fastening operation can be performed, but the tools cannot accommodate rods that protrude beyond the socket length and accessories separate from the rotary tool
Solution Approach 1:
The tool is divided into functionally independent segments: a motorized rotary component for fastener rotation and a separate linear translation component that allows the fastener to move along the threaded rod. This segmentation enables the rotary mechanism to remain compact while accommodating rods of various lengths through independent linear motion capability.
Solution Approach 2:
The through-bore gear mechanism allows the threaded rod to pass through the tool housing, with the fastener nested within the tool's operational space. The rod extends beyond the tool body while the fastening operation occurs within the compact tool structure, enabling accommodation of long rods without increasing tool size.
2Manufacturing precision
If existing devices are used to tighten fasteners to a fixed torque, then torque control is achieved, but the threaded rod protruding from the fastener cannot be accommodated
Solution Approach 1:
The tool transitions from a static socket-based design to a dynamic system where the fastener can move linearly along the threaded rod while being rotated. This dynamic capability allows the fastener to travel along the rod length independently of the tool body, accommodating protruding rods while maintaining torque control through the motorized rotation mechanism.
3Ease of operation
If elastic belts or accessories are used to transfer motion along threaded rods, then fastener rotation is enabled, but the elastic or accessory separates from the rotary tool during operation
Solution Approach 1:
A dedicated translation mechanism serves as an intermediary between the motorized rotary component and the fastener. This intermediary mechanism positively engages the fastener and translates rotational motion into linear motion along the rod, eliminating the need for elastic belts or flexible accessories that can detach during operation.
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, single-handed operation for rotating fasteners along threaded rods of various dimensions, preventing accessory separation and accommodating rods that exceed the tool's socket length.
Implementation Method 1
a motor, a power source for this motor, electrical conductors enabling the transfer of power from the source to the motor
Implementation Method 2
a pinion positioned to rotate with the shaft of the motor, a gear with a different axis of rotation and a through bore within
Data Source
AI summary
A mechanism is provided for the driving of threaded fasteners (nuts) down a threaded rod beyond the length of a socket, using the power of an included motor controlled by a switch. The driving of nuts is accomplished by a mechanism component with a cavity of geometry corresponding to the nut and its rod; elaborate embodiments of the mechanism allow for the replacement of that component to accommodate various nuts. A method is provided for the positioning of a gear without a shaft or bushings, as well as a method of constructing that gear.