Electric Tool Data Transfer for Uninterrupted Fastening
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Solution Overview
Problem
Existing electric tool systems experience decreased user-friendliness due to prolonged communication times during data transmission, leading to suspended screw fastening operations when large amounts of information are transmitted wirelessly, which can cause inefficiencies in assembly line operations.
Innovation Solution
The electric tool incorporates both wireless and wired communication modes, allowing operations data to be transmitted via wireless communication during fastening operations and stored data to be transmitted via wired communication, reducing interference and improving user-friendliness by minimizing suspension times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to transmit operations data during fastening operations, then data transmission is enabled without physical connection, but communication time increases and operations must be suspended
Solution Approach 1:
The system dynamically switches between wireless and wired communication modes based on operational requirements. During fastening operations, wireless mode is used for real-time data transmission, while wired mode is activated for bulk historical data transmission, optimizing both operational continuity and data management efficiency
Solution Approach 2:
The communication system is segmented into two distinct modes: wireless communication for transmitting current operation data during fastening tasks, and wired communication for transmitting stored historical operations data. This segmentation allows each mode to be optimized for its specific purpose, preventing operation suspensions during critical fastening tasks
2Loss of information
If large amounts of operations data are transmitted wirelessly, then complete data transmission is achieved, but communication establishment time increases
Solution Approach 1:
Operations data is preliminarily stored in the storage unit during fastening operations. This pre-stored data can then be efficiently transmitted via wired communication when needed, eliminating the need for time-consuming wireless transmission of large data sets and reducing communication establishment time
Solution Approach 2:
The system extracts and separates current operation data (transmitted wirelessly during operations) from historical operations data (stored and transmittable via wired communication). This extraction allows large volumes of historical data to be managed separately, preventing communication delays during active fastening operations
3Ease of operation
If wireless communication mode is used for data transmission, then portability and ease of use are improved, but transmission reliability decreases in unreliable environments
Solution Approach 1:
The system changes the communication parameter (mode) based on environmental conditions. When wireless communication reliability is compromised, the system switches to wired communication mode, maintaining communication reliability while preserving the portability benefits of wireless operation when conditions permit
Data Source
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Figure 2
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AI summary
An object of the present disclosure is to provide an electric tool and electric tool system with improved user-friendliness. An electric tool (2) includes a fastening unit (23), a control unit (21), a sensor unit (24), a communications unit (25), a storage unit (27), and a portable tool body. The sensor unit (24) measures at least fastening torque applied by the fastening unit (23). The communications unit (25) transmits operations data about a result of measurement made by the sensor unit (24). The communications unit (25) includes a wireless communications unit (251) and a wired communications unit (252). In a wireless communication mode, the wireless communications unit (251) transmits, by a wireless communication method, at least a part of the operations data, when a fastening operation has been done for either one round or multiple rounds. In a wired communication mode, while the communications unit (25) is operating in the wired communication mode, the wired communications unit (252) transmits, by a wired communication method, the operations data stored in the storage unit (27).