Bending Angle Detection Using Laser Reflection
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Solution Overview
Problem
Conventional workpiece bending machines face challenges in accurately measuring bending angles due to guide rail straightness issues, leading to inaccurate measurements and inefficiencies in product production.
Innovation Solution
A workpiece bending angle detecting device with a casing fixed to the contact portion of tools, featuring a first moving unit for diagonal movement and a second moving unit for linear movement along the bending line, allowing for precise detection of bending angles with improved accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detector is moved along the guide rail to measure bending angle, then the measurement function is achieved, but guide rail straightness issues cause the detector to move in a rolling manner, deteriorating measurement accuracy
Solution Approach 1:
The invention extracts the measurement function from the guide rail system by using a separate laser sensor that measures bending angle through optical reflection from the workpiece surface, rather than relying on the guide rail for positioning and measurement. This separates the measurement function from the potentially flawed mechanical guide rail structure.
Solution Approach 2:
The invention replaces the mechanical guide rail-based detection system with an optical measurement system using a laser sensor. The laser sensor emits light that reflects off the workpiece surface, and the reflection angle is used to calculate the bending angle, substituting mechanical contact and movement with non-contact optical measurement.
2Device complexity
If a conventional detector system with guide rails is used, then the device structure is relatively simple, but the detector moves in a rolling manner due to guide rail imperfections, reducing measurement accuracy
Solution Approach 1:
The invention replaces the mechanical guide rail and slider system with an optical measurement system. The laser sensor is positioned on the die and measures bending angle through light reflection from the workpiece, eliminating the need for mechanical movement along guide rails while achieving higher measurement accuracy.
Solution Approach 2:
The invention introduces light as an intermediary medium for measurement. The laser sensor emits light that interacts with the workpiece surface, and the reflected light carries information about the bending angle. This optical intermediary enables accurate measurement without direct mechanical contact or reliance on guide rail straightness.
3Measurement precision
If the detector is positioned to contact the workpiece for measurement, then bending angle data is obtained, but the measurement process is time-consuming and reduces productivity
Solution Approach 1:
The invention enables continuous measurement during the bending process. The laser sensor is positioned on the die and continuously monitors the workpiece surface as it bends, allowing real-time angle detection without interrupting the bending operation. This eliminates the need for separate measurement steps and maintains continuous production flow.
Solution Approach 2:
The invention replaces contact-based mechanical measurement with non-contact optical measurement. The laser sensor measures bending angle through light reflection without physically touching or restraining the workpiece, allowing measurement to occur simultaneously with the bending process rather than requiring separate measurement operations.
Data Source
AI summary
A bending angle detecting device for a workpiece used in a bending machine that bends the workpiece in cooperation of upper and lower tools. The bending angle detecting device has a detector which includes a casing and which can detect a bending angle of the workpiece with the casing fixed in contact with a contact portion of the lower tool.