Electric Power Tool Job Switching for Sequential Fastener Tightening
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Solution Overview
Problem
Existing electric power tools require frequent communication with external devices for each tightening operation, leading to inefficiencies such as excessive communication, processing load, and data storage, especially when performing repetitive tightening patterns.
Innovation Solution
An electric power tool with a memory device storing multiple sets of job information for tightening operations and two distinct circuits: one for receiving and executing operation settings, and another for automatically switching to the next set of information after completion, reducing the need for continuous external device communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If communication is established between the electric power tool and operation management apparatus in every tightening operation, then the operation management apparatus can manage tightening operations, but excessive communication and processing load occur
Solution Approach 1:
The electric power tool stores multiple sets of job information (tightening parameters, torque values, operation settings) in advance in its memory device before actual tightening operations begin. This preliminary storage eliminates the need to communicate each parameter individually during operations, reducing communication frequency while maintaining management capability.
Solution Approach 2:
The electric power tool autonomously selects and executes appropriate job information from its stored sets based on operation conditions without requiring continuous external guidance. The tool independently manages its tightening operations by accessing pre-stored job information, reducing dependency on real-time communication with the operation management apparatus.
2Adaptability or versatility
If job information is transmitted and stored for each tightening operation, then operation settings can be applied, but excessive data storing occurs
Solution Approach 1:
The electric power tool stores multiple sets of job information that can be universally applied to different tightening operation scenarios. Each set contains comprehensive parameters that can handle various fastening requirements, allowing the tool to adapt to different operations without requiring unique data for each case.
Solution Approach 2:
The system reuses stored job information sets across multiple tightening operations. Once job information is loaded into memory, it can be recovered and applied repeatedly to similar operations, eliminating the need to continuously transmit and store new data for each operation while maintaining operational flexibility.
3Productivity
If the electric power tool repeatedly performs the same pattern of tightening operations, then efficiency should improve, but excessive communication continues to occur
Solution Approach 1:
For repetitive tightening patterns, the electric power tool loads the required job information sets into memory in advance before the operation sequence begins. This preliminary loading ensures that during repetitive operations, the tool can execute without interruption for data retrieval, maximizing productivity while minimizing communication overhead.
Solution Approach 2:
The electric power tool maintains continuous operation by keeping job information readily available in memory during repetitive tightening sequences. The tool executes multiple tightening operations in succession without pausing for communication, ensuring uninterrupted productive action while the stored job information guides each operation.
Data Source
AI summary
One aspect of the present disclosure provides an electric power tool including an output shaft, a motor, a manual switch, a memory device, a first circuit, and a second circuit distinct from the first circuit. The memory device stores two or more sets of job information. Each of the two or more sets of job information includes at least one operation setting of the motor for performing an associated tightening operation. The first circuit (i) receives one set of job information and (ii) drives the motor in accordance with the at least one operation setting included in the one set of job information based on the manual switch being or having been manually operated. The second circuit outputs a next set of job information from the memory device to the first circuit based on the first circuit having completed driving the motor.