Cam-Driven Wire Cutter for Controlled Force and Easy Insertion
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Solution Overview
Problem
Existing wire cutting tools are inefficient for cutting wires used in cable tray systems, particularly due to the lack of a mechanism that can effectively manage cutting force and ensure easy wire insertion and handling.
Innovation Solution
A cutting tool with a cam drive mechanism powered by a motor, featuring a radial cam and shuttle system with a spring-biased roller assembly, allowing precise control of cutting force and automatic return to maximize space between blades for easy wire insertion, along with an optional electronic clutch for safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional wire cutting tool is used, then the structure is simple, but the cutting force cannot be effectively controlled and wire insertion is difficult
Solution Approach 1:
The patent applies dynamics by implementing a cam-driven mechanism that converts rotational motion into linear reciprocating motion of the cutting blade. The cam profile is specifically designed to control the blade's movement trajectory, providing automatic wire feeding and cutting force management. This dynamic mechanism allows the blade to automatically return to the retracted position after each cut, maximizing space for wire insertion while maintaining controlled cutting force through the cam's geometric profile.
2Productivity
If cutting force is increased to cut through cable tray wires, then cutting efficiency improves, but the risk of jamming and safety hazards increases
Solution Approach 1:
The patent implements beforehand cushioning through a spring-loaded anvil system positioned behind the cutting point. The spring mechanism absorbs excess cutting force and prevents jamming by allowing controlled deformation during the cutting process. This cushioning mechanism is pre-configured to handle varying wire types and tensions, maintaining reliability while enabling efficient cutting of cable tray wires without causing jams or safety hazards.
3Ease of operation
If the space between blades is maximized for easy wire insertion, then ease of operation improves, but the cutting force application area is reduced
Solution Approach 1:
The patent applies dimensionality change by utilizing the temporal dimension through the cam-driven reciprocating motion. The blade alternates between a retracted position (maximizing spatial distance for wire insertion) and a forward position (applying cutting force). The cam mechanism ensures that sufficient time is spent in each position, and the cutting force is applied through a focused edge geometry that compensates for the reduced spatial application area during the cutting stroke.
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 efficiently cuts wires with controlled cutting force, ensuring easy handling and minimizing the need for sensors, and provides a safe mechanism to prevent jamming and facilitate easy operation.
Implementation Method 1
featuring a radial cam and shuttle system with a spring-biased roller assembly, allowing precise control of cutting force and automatic return
Data Source
AI summary
A cutting tool includes a housing, a head assembly disposed on the housing and carrying a first blade. A cam drive mechanism is disposed within the housing. The cam drive mechanism carries a second blade opposed to the first blade. A motor drives the cam drive mechanism. A battery pack is electrically connected to the motor. The cam drive mechanism moves the second blade towards the first blade, so that a wire disposed between the first and second blades receives a cutting force of less than 12 kiloNewton. The cam drive mechanism may include a spindle driven by the motor, a radial cam fixed to the spindle, a roller assembly contacting the radial cam, and a shuttle connected to the roller assembly, the shuttle being movable in a reciprocating motion and carrying the second blade.