Electric Screwdriver Control Circuit for Multi-Order Workflows
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Solution Overview
Problem
Conventional electric motor-driven screwdrivers require manual user intervention or complex external device control to change settings and execution orders for work processes, limiting their ability to handle a large number of processes efficiently.
Innovation Solution
A control circuit with an information storage unit and computing unit that stores and manages setting data for control conditions and execution orders, allowing automatic sequential changes in control conditions and operation orders without manual user intervention or external device control, enabling the tool to perform a series of work processes in different execution orders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of registered work processes is increased to handle more complex production lines, then the adaptability improves, but the device complexity increases due to larger memory capacity requirements
Solution Approach 1:
The control circuit enables a single screwdriver to perform multiple different work processes by dynamically switching between stored execution order data sets. Instead of requiring separate devices or extensive memory for each possible process configuration, the system uses one versatile control circuit that can load and execute different work process sequences as needed.
2Adaptability or versatility
If manual setting changes are made by the user to execute additional work processes, then the adaptability improves, but the ease of operation deteriorates due to frequent manual interventions
Solution Approach 1:
The control circuit automatically manages work process transitions by selecting and executing appropriate execution order data from storage based on the current work process state. The system performs self-service by autonomously changing settings and transitioning between work processes without requiring manual user intervention, thereby maintaining adaptability while improving ease of operation.
3Adaptability or versatility
If external device control is used to change settings for additional work processes, then the adaptability improves, but the device complexity increases due to communication interface requirements
Solution Approach 1:
The patent extracts the execution order data storage and management functionality from external devices and integrates it directly into the control circuit's memory. By taking out the need for external communication interfaces and embedding the work process execution order data within the screwdriver itself, the system achieves high adaptability while reducing device complexity.
4Adaptability or versatility
If the execution order of work processes is changed to handle different production scenarios, then the adaptability improves, but the ease of operation deteriorates due to complex setting changes
Solution Approach 1:
Multiple execution order data sets are pre-stored in the control circuit's memory, each representing a different valid work process sequence. When a work process completes, the system automatically retrieves and executes the next appropriate sequence from pre-stored options. This preliminary preparation of multiple execution orders eliminates the need for complex real-time setting changes, thereby maintaining adaptability while improving ease of operation.
Data Source
AI summary
An electric motor-driven screwdriver includes a control circuit having a memory stored with setting data and a computing unit controlling the electric motor-driven screwdriver based on the setting data. The computing unit sets an execution order of work processes based on a pre-designated piece of order setting data, and sets, based on a next operation setting value, a next operation to be performed after completion of the final work process. The next operation setting value is selectable from among a setting value for stopping the operation of the electric motor-driven screwdriver, a setting value for repeating a series of work processes, and a setting value for shifting to a series of work processes in an execution order determined based on another piece of order setting data.