Power Tool Accessory Detection for Automatic Speed and Torque Control
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Solution Overview
Problem
Power tools often operate inefficiently or inappropriately when different accessories are used due to differences in material, dimensions, or task requirements, leading to suboptimal performance and wear.
Innovation Solution
The integration of an accessory-type detector in power tools that detects characteristics of attached accessories, such as material, shape, or size, allowing the motor controller to adjust operational characteristics like speed and torque accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the power tool operates with fixed speed and torque settings, then the device complexity is reduced, but the adaptability to different accessory types deteriorates
Solution Approach 1:
The accessory-type detector is integrated into the power tool before operation begins. The detector automatically identifies the accessory type and communicates this information to the motor controller, which then pre-configures the operational parameters (speed, torque) appropriate for that accessory type before the user activates the tool. This preliminary detection and configuration eliminates the need for manual setting adjustments.
Solution Approach 2:
The system implements a feedback loop where the accessory-type detector continuously monitors the attached accessory and provides information to the motor controller. The motor controller adjusts operational characteristics in real-time based on this feedback, ensuring optimal performance for each accessory type without requiring manual intervention or complex user programming.
2Productivity
If the power tool automatically adjusts operational characteristics based on accessory detection, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The power tool performs self-configuration through the accessory-type detector and motor controller combination. When an accessory is attached, the system automatically detects its type and adjusts operational parameters without requiring user input or manual programming. The tool serves itself by making intelligent adjustments based on accessory characteristics, freeing the user to focus solely on the task at hand.
Solution Approach 2:
The patent replaces manual mechanical adjustment mechanisms with an electronic detection and control system. Instead of requiring users to physically adjust speed dials, torque settings, or other operational parameters, the system uses electronic sensors and controllers to automatically configure these parameters based on accessory type detection.
3Manufacturing precision
If the power tool uses manual speed and torque settings, then the ease of operation is improved, but the manufacturing precision deteriorates
Solution Approach 1:
The motor controller automatically configures precise operational parameters based on accessory type detection. The system performs self-calibration and parameter optimization without requiring user expertise or manual adjustment, achieving manufacturer-specified optimal settings automatically while keeping the interface simple for the user.
Data Source
AI summary
Systems and methods are provided for an electric tool (e.g., a power tool) that includes an output driver for receiving an accessory, and an accessory-type detector. A motor of the electric tool is coupled to the output driver for driving the accessory. The power tool also includes an operation trigger for activating the motor and a motor controller. The motor controller includes an electronic processor that is coupled to the accessory-type detector, the motor, the operation trigger, and a memory. The memory stores instructions that when executed by the electronic processor cause the motor controller to detect a characteristic of the accessory from output of the accessory-type detector. The motor controller determines an operational characteristic for the accessory based on the detected characteristic, and controls operation of the motor to drive the accessory according to the operational characteristic when the operation trigger is activated.