Press Brake Tool Interference Detection for Mis-Installed Dies
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Solution Overview
Problem
Operators may improperly install additional tools in tool holders of a press brake, leading to potential damage to the part or tools during bending operations, as existing technologies lack effective detection methods for improper tool installation.
Innovation Solution
A tool improper installation detection device and method that utilizes an NC device connected to a data management server, which calculates interference regions and compares them with the attachment position of additional tools to detect overlaps, preventing improper installation by stopping the bending process if an overlap is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If operators manually attach additional tools to tool holders, then versatility and adaptability are improved, but the risk of improper installation increases leading to potential damage
Solution Approach 1:
The system implements automatic detection feedback by using sensors to monitor tool attachment positions and comparing them against predefined correct positions. When improper installation is detected, the system provides feedback through error messages or alarms to alert operators, enabling real-time correction before damage occurs.
Solution Approach 2:
The patent replaces manual visual inspection and mechanical checking methods with automated sensing systems. Sensors (such as optical, capacitive, or inductive sensors) automatically detect tool positions and verify proper installation, eliminating the need for operators to manually check each tool attachment.
2Reliability
If automated detection systems are implemented, then installation reliability is improved, but device complexity increases
Solution Approach 1:
The detection system is designed with multi-functionality to reduce overall complexity. The same sensor array and control unit that detect tool positions also verify their installation correctness, and can potentially detect other anomalies. This universal approach avoids needing separate dedicated systems for each detection function.
Solution Approach 2:
The patent merges the detection function with the existing tool holder structure and control system. Sensors are integrated into the tool holder assembly, and the detection logic is combined with the press brake's existing control unit, eliminating the need for separate standalone detection devices and reducing overall system complexity.
Data Source
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AI summary
An NC device (40) obtains, when a plurality of bending lines set for a part are sequentially bent using a predetermined tool, an interference region in which the part interferes with the tool when a tool length of the tool used for each bending line is virtually extended. The NC device (40) detects whether or not the interference region interferes with an additional tool additionally attached to a tool holder, and determines that the additional tool is an improperly installed tool when it is detected that the interference region interferes with the additional tool.