Electric Cutting Blade Control for Automatic Cut Completion
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Solution Overview
Problem
Existing electric cutting devices require constant user attention to determine the completion of cutting operations, leading to potential inefficiencies and accidental cutting of unintended structures, as the timing for opening or closing the cutting blades is not optimally controlled.
Innovation Solution
An electric cutting device with a control unit that automatically determines the completion of cutting based on current changes and motor operation, allowing for automatic opening of the cutting blades when the task is finished and stopping the closing operation if the user switches off the trigger before completion, thereby reducing user workload and preventing accidental cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the timing to open the cutting blade is too early, then the cutting operation may be interrupted prematurely, but the working time becomes unnecessarily long and productivity decreases
Solution Approach 1:
The control unit continuously monitors the operating state of the cutting blades and receives signals from the operation unit to determine the optimal timing for opening the blades. This feedback mechanism ensures the blades are opened at the precise moment cutting is complete, avoiding both premature interruption and unnecessary delay, thus resolving the contradiction between cutting accuracy and productivity
2Reliability
If the user must maintain constant attention to determine cutting completion, then the timing can be accurately judged, but the user workload increases and ease of operation decreases
Solution Approach 1:
The control unit automatically determines cutting completion by monitoring blade operating state and operation unit signals, eliminating the need for continuous user attention. The system serves itself by autonomously judging when cutting is complete and automatically opening the blades, thereby maintaining high reliability while significantly improving ease of operation
3Productivity
If the cutting blade operates continuously in ON state, then productivity increases, but the ability to stop cutting when needed (reliability) decreases
Solution Approach 1:
The system dynamically adjusts between continuous operation mode and interruptible operation mode based on real-time conditions. The control unit monitors both the operation unit state and blade operating state, allowing the system to switch between uninterrupted continuous cutting (for high productivity) and immediate stopping capability (for reliability), thus resolving the contradiction between these two opposing requirements
Data Source
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AI summary
An electric cutting device includes: a pair of cutting blades clamping and cutting an object; an electric motor generating a driving force for operating the cutting blades; a control unit controlling the electric motor; an operation unit switched between an ON state and an OFF state by a user operation; and a determination unit. After the operation unit enters into the ON state and the pair of cutting blades start operating in a closing direction, the control unit is configured to: open the pair of cutting blades when the cutting of the object is completed while the operation unit is kept in the ON state; and stop closing the pair of cutting blades when the operation unit changes from the ON state to the OFF state at a timing before the cutting of the object is completed.