Cable Cutting Tool Dynamic Axis Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cable cutting tools with magnification mechanisms increase tool mass and complexity, making them inefficient for cutting thick cables with one or two hands.
Innovation Solution
A manually operated cable cutting tool with a pivot shaft and a second shaft that allows for automatic axis point switching between the shaft holes, enabling efficient cutting with reduced handle spread and increased cutting force without adding mass or complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a magnification mechanism (such as a toggle mechanism or wheel-bearings structure) is incorporated into the cutting tool to increase cutting force, then the cutting force is increased, but the tool mass and device complexity increase
Solution Approach 1:
The patent applies the dynamics principle by making the pivot shaft movable within an arc-shaped trajectory instead of being fixed. The pivot shaft automatically shifts position during the cutting stroke, transitioning from a fixed-axis rotation to a dynamic moving-axis rotation. This dynamic adjustment allows the tool to achieve magnification of cutting force at the critical point of highest pressure without requiring additional mechanical components like toggle mechanisms or wheel-bearings structures, thereby resolving the contradiction between increasing cutting force and reducing device complexity
Solution Approach 2:
The patent applies the parameter changes principle by altering the position parameter of the pivot shaft during operation. The pivot shaft's position changes along an arc-shaped path, with the radius of the arc being 0.05 to 0.15 times the distance between the pivot shaft and the cutting blade. This parameter change optimizes the mechanical advantage dynamically during the cutting stroke, enabling increased cutting force at the point of highest pressure while maintaining a simple tool structure without additional magnification mechanisms
2Force
If a magnification mechanism is incorporated into the cutting tool to increase cutting force, then the cutting force is increased, but the tool mass increases
Solution Approach 1:
The patent applies the dynamics principle by making the pivot shaft movable within an arc-shaped trajectory instead of being fixed. The pivot shaft automatically shifts position during the cutting stroke, transitioning from a fixed-axis rotation to a dynamic moving-axis rotation. This dynamic adjustment allows the tool to achieve magnification of cutting force at the critical point of highest pressure without requiring additional mechanical components like toggle mechanisms or wheel-bearings structures, thereby resolving the contradiction between increasing cutting force and reducing device complexity
Solution Approach 2:
The patent applies the self-service principle by designing the pivot shaft to automatically adjust its own position along the arc-shaped trajectory without requiring external control mechanisms or additional components. The moving pivot shaft structure enables the tool to self-optimize its mechanical advantage during the cutting stroke, achieving force magnification through the inherent geometry of the moving axis rather than through added magnification mechanisms, thus avoiding increased tool mass
3Productivity
If conventional cutting tools are used to cut thick cables, then the cutting operation can be performed, but the operation requires two hands and extensive handle spread, reducing efficiency and speed
Solution Approach 1:
The patent applies the dynamics principle by making the pivot shaft movable within an arc-shaped trajectory instead of being fixed. The pivot shaft automatically shifts position during the cutting stroke, transitioning from a fixed-axis rotation to a dynamic moving-axis rotation. This dynamic adjustment allows the tool to achieve magnification of cutting force at the critical point of highest pressure without requiring additional mechanical components like toggle mechanisms or wheel-bearings structures, thereby resolving the contradiction between increasing cutting force and reducing device complexity
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 easy cutting of thick cables with one or two hands by distributing cutting force effectively, allowing for efficient operation without the need for extensive handle spread, especially at the point of highest pressure.
Implementation Method 1
a second shaft 7, which is different from the above described pivot shaft 5, is provided to one of the operating handles 1, 2 so as to be located close to a grip section of the handle... the two axis points, which are the end section 6a of the shaft hole 6 and the end section 8a of the second shaft hole 8, are automatically switched between each other in a single, continuous operation of the handles
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cable cutting tool realized without an increase in the mass and the number of parts thereof, produced without making an assembly process complex, and capable of easily cutting a cable with a force smaller than the force required in conventional cable cutting tools. A cable cutting tool is provided with a left-and-right pair of operating handles (1, 2) connected to each other by a pivot shaft (5), and also with a pair of cable cutting blade bodies (3, 4) that open and close when the handles are separated from and brought close to each other. A second shaft (7), which is a different element from the pivot shaft (5), is provided to one of the handles so as to be located close to a grip section of the handle. A second shaft hole (8), which is a different hole from a shaft hole (6) in which the pivot shaft (5) is fitted, is formed in the other handle so as to be located close to a grip section of the handle. The second shaft hole (8) is provided with a space (8b) for allowing the second shaft (7) to perform a required movement about an axis point that is one end section (6a) of the shaft hole (6). The shaft hole (6) is provided with a space (6b) for allowing the pivot shaft (5) to perform a required movement about an axis point that is one end section (8a) of the second shaft hole (8). In the cutting of a cable, the two axis points, which are the end section (6a) of the shaft hole (6) and the end section (8a) of the second shaft hole (8), are automatically switched between each other in a single, continuous operation of the handles.