Press Brake Tool Verification for Correct Die Selection
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Solution Overview
Problem
In press brake operations, tool misidentification and incorrect tool mounting can lead to tool breakage and processing defects in sheet metal bending, due to the variability in tool shapes and sizes within the tool stocker.
Innovation Solution
A press brake control device and method that utilizes a tool management system with two-dimensional code readers to identify tools and compare them against stored tool layout data, ensuring correct tool retrieval and mounting by displaying alerts for mismatches and guiding operators to the correct tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tools with varying shapes and sizes are stored in the tool stocker, then the versatility and adaptability of the press brake system is improved, but the risk of operator error in selecting the correct tool increases
Solution Approach 1:
The system implements feedback by reading the identification code from the selected tool and comparing it with the required tool code from the program. The display unit provides visual feedback to the operator showing whether the selected tool matches the required tool, allowing the operator to correct any selection errors before operation begins.
Solution Approach 2:
The identification code attached to each tool acts as an intermediary that bridges the physical tool and the control system. This code enables automatic verification without requiring the operator to visually identify tool characteristics, thereby reducing selection errors while maintaining tool variety.
2Ease of operation
If manual tool selection and mounting is performed by operators, then the ease of operation is improved, but the occurrence of tool misidentification and incorrect mounting increases
Solution Approach 1:
The verification unit provides immediate feedback to the operator by displaying match/mismatch results. This feedback mechanism maintains the simplicity of manual tool mounting while significantly improving identification accuracy through automated verification and visual confirmation.
Solution Approach 2:
The patent replaces manual visual identification with an automated optical/electronic reading system. The identification code reader automatically reads the tool's identification code and compares it with the program requirements, substituting human visual inspection with machine-based verification to eliminate misidentification errors.
3Reliability
If identification verification systems are added to the press brake, then the reliability of tool selection is improved, but the device complexity increases
Solution Approach 1:
The verification system uses a straightforward feedback mechanism where the reading unit reads the identification code, the verification unit compares it with the program data, and the display unit shows the result. This simple feedback loop achieves reliable tool verification without requiring complex control systems or multiple sensors.
Solution Approach 2:
The system uses a simplified representation (identification code) of the tool's identity rather than analyzing the tool's physical characteristics. This copying approach allows verification through simple code comparison rather than complex tool measurement and identification, reducing system complexity while maintaining verification accuracy.
Data Source
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AI summary
A tool to be used for bending a sheet metal is selected and tool layout data is generated in advance that includes a tool ID of the selected tool, mounting position information, and information on a place where each tool is housed in a tool stocker. A display controller (202) controls a display (51) to display information on a place where a tool is housed. A tool collation unit (208) collates a tool ID read by a reader of a tool retrieved by an operator from a tool stocker with a tool ID of a tool included in tool layout data. In a case where the read tool ID matches a tool ID of none of tools included in the tool layout data, the display controller (202) controls the display (51) to display a message indicating that the tool retrieved by the operator is an incorrect tool.