Cylindrical Workpiece Grooving Using Optical Vertex Detection
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Solution Overview
Problem
Existing workpiece processing devices face challenges in achieving high accuracy during grooving of cylindrical-shape workpieces, particularly when the central axis of the workpiece and the workpiece rotation axis do not match, leading to variations in ultrasonic wave transmission and reception characteristics and noise in ultrasonic images, and restricting the size of workpieces that can be processed.
Innovation Solution
A workpiece processing device that includes a supporting unit for rotational movement of the workpiece around a first axis parallel to its central axis, a cutting unit with a blade, a detecting unit for calculating the position of surface vertices, and a control unit to adjust the cutting position and blade orientation, allowing for precise grooving without requiring the central axis and workpiece rotation axis to match, enabling processing of various sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the central axis of the workpiece and the workpiece rotation axis are made to match each other to ensure processing accuracy, then the manufacturing precision of grooving is improved, but the device complexity and cost increase due to requiring larger distances and movable ranges
Solution Approach 1:
The patent replaces the mechanical alignment system (which required precise matching of workpiece central axis and rotation axis) with an optical detection system. The detection unit uses light to detect the vertex position of the workpiece cross-section, and the control unit calculates the deviation between the detected vertex position and the ideal position. This substitution eliminates the need for complex mechanical alignment mechanisms and large device dimensions, while maintaining high grooving accuracy through optical measurement and computational correction.
2Manufacturing precision
If the central axis of the workpiece and the workpiece rotation axis are made to match each other to ensure processing accuracy, then the manufacturing precision of grooving is improved, but the adaptability to various workpiece sizes and shapes is reduced
Solution Approach 1:
The patent changes the detection parameter from mechanical axis alignment to optical vertex position detection. By detecting the vertex position of the workpiece cross-section using light and calculating the deviation from the ideal position, the system can adapt to workpieces of various sizes and shapes without requiring precise mechanical alignment. The control unit compensates for the detected deviation, maintaining high grooving accuracy across different workpiece dimensions and geometries.
3Ease of operation
If the workpiece attaching accuracy is reduced to simplify the attachment process, then the ease of operation is improved, but the manufacturing precision of grooving deteriorates due to deviation between central axis and rotation axis
Solution Approach 1:
The patent replaces the mechanical alignment system with an optical detection and computational correction system. The detection unit detects the actual vertex position of the workpiece cross-section using light, and the control unit calculates the deviation between the detected position and the ideal position. This allows the workpiece to be attached without high mechanical accuracy, as the system compensates for attachment errors through optical measurement and computational correction, maintaining high grooving accuracy while simplifying the attachment process.
Data Source
AI summary
A workpiece processing device includes a workpiece supporting unit configured to support a workpiece so that the workpiece is rotatable around a first axis parallel to a central axis of the workpiece, a cutting unit having a blade configured to cut a surface of the workpiece, a detecting unit configured to calculate a position of a vertex of the surface in a direction along a second axis which is perpendicular to the first axis and parallel to the blade, and a control unit configured to control the workpiece supporting unit so that a cutting position on the surface is located at a vertex in the direction along the second axis, and relatively move the workpiece supporting unit and the cutting unit so that an incision direction of the blade is on a plane defined by the central axis and the cutting position, thereby forming a groove at the cutting position.