Motor-Driven 4-Way Indent Tool Cam Actuator
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Solution Overview
Problem
Conventional 4-way indent tools are either hand-powered, leading to inconsistent crimps and operator fatigue, or are heavy and cumbersome when hydraulic or pneumatic, limiting their flexibility and usability.
Innovation Solution
A motor-driven 4-way indent tool with a mechanical drive assembly and cam actuator system that includes a crimp height adjustment mechanism, allowing for repeatable and reliable crimping operations with a lightweight design, powered by a battery for portability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hand-powered 4-way indent tools are used, then operator control is maintained, but crimp consistency deteriorates and operator fatigue increases
Solution Approach 1:
The patent replaces the hand-powered mechanical system with an electric motor-driven system. The motor provides consistent rotational force to the drive screw, which through the cam mechanism delivers uniform crimping force to all four indenters simultaneously, eliminating the inconsistency and fatigue associated with manual operation while maintaining full control over the crimping process.
Solution Approach 2:
The patent incorporates a trigger mechanism that activates the motor only when needed. The operator pulls the trigger to initiate the crimping cycle, and the motor automatically executes the complete crimping sequence through the drive screw and cam mechanism, then stops automatically. This preliminary action setup allows consistent crimps without continuous operator effort.
2Power
If hydraulic or pneumatic 4-way indent tools are used, then crimping power is increased, but tool weight increases and flexibility decreases
Solution Approach 1:
The patent substitutes heavy hydraulic or pneumatic power systems with a compact electric motor. The motor, coupled with a mechanically amplified cam mechanism and drive screw, delivers sufficient crimping force without the weight and complexity of fluid power systems. The battery-powered motor provides portable, flexible operation with adequate power for terminal crimping applications.
Solution Approach 2:
The patent uses a dynamic cam mechanism that converts the motor's continuous rotation into controlled linear motion of the drive assembly. The cam profiles are designed to provide the necessary crimping force dynamically during the stroke, allowing powerful crimping action only when needed during the forward stroke, while the tool remains lightweight and portable.
3Productivity
If pneumatic 4-way indent tools are used, then crimping speed is increased, but portability deteriorates due to air hose connection requirement
Solution Approach 1:
The patent replaces the pneumatic system with an electric motor powered by a rechargeable battery. This substitution eliminates the need for air hose connections, providing complete portability and flexibility. The motor maintains adequate crimping speed through its direct coupling to the drive screw and cam mechanism, enabling productive operation in remote or mobile applications without external air supply.
4Reliability
If motor-driven 4-way indent tools are used, then crimp consistency is improved, but device complexity increases
Solution Approach 1:
The patent segments the motor-driven system into distinct functional modules: the motor unit, the drive screw mechanism, the cam arm assembly with four indenters, and the control trigger. Each module performs a specific function and can be independently understood or maintained. This segmentation manages complexity by organizing components into logical groups while maintaining consistent crimping through their coordinated operation.
Solution Approach 2:
The patent uses a universal cam mechanism that simultaneously controls all four indenters through a single drive screw and cam arm assembly. The cam profiles are designed to engage multiple indenters in a coordinated manner, providing consistent crimping force to all four terminals in one motion. This multi-functionality reduces complexity compared to four separate actuation mechanisms.
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 provides consistent and reliable crimping with reduced operator fatigue, offering flexibility and ease of use due to its lightweight and battery-operated design, ensuring high-quality crimping with adjustable crimp height and controlled crimp force.
Implementation Method 1
a motor driven by a power source. The cover holds a drive screw operably coupled to the motor and being rotated by the motor when the motor is operated
Implementation Method 2
The drive assembly has a drive nut threadably coupled to the drive screw and a coupler operably coupled between the drive nut and the indenter actuator cam arm
Implementation Method 3
The indenter actuator cam arm has cam surfaces engaging the corresponding indenters to actuate the indenters as the indenter actuator cam arm moves to the actuated position
Implementation Method 4
The coupler is configured to decouple the cam lever arm from the drive nut when the indenter actuator cam arm is in the actuated position to allow the coupler to continue moving to the advanced position without further moving the indenter actuator cam arm beyond the actuated position
Data Source
AI summary
A 4-way indent tool includes a indenter actuator cam arm being movable between an unactuated position and an actuated position to actuate four indenters to crimp a terminal. The 4-way indent tool includes a drive assembly movable along the drive screw between a retracted position and an advanced position. The drive assembly has a drive nut on a drive screw and a coupler operably coupled between the drive nut and the indenter actuator cam arm. The coupler moves the indenter actuator cam arm. The coupler has a spring loaded coupling between the drive nut and the indenter actuator cam arm compressed as the coupler is moved between the retracted position and the advanced position.