Cylindrical Workpiece Grooving With Vertex Detection Alignment
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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 limiting the size of workpieces that can be processed.
Innovation Solution
A workpiece processing device with a supporting unit for rotational movement around a central axis, a cutting unit with a blade, a detecting unit for calculating vertex positions, 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 perpendicular blade orientation, then processing accuracy is improved, but the device complexity and cost increase due to requiring precise alignment mechanisms and larger movable ranges
Solution Approach 1:
The patent replaces the mechanical alignment system with an optical detection system. The detection unit uses light to detect the vertex position of the workpiece, and the control unit calculates the necessary rotation angle based on this detection. This substitution eliminates the need for complex mechanical alignment mechanisms while maintaining high processing accuracy.
Solution Approach 2:
The patent changes the parameter being controlled from the physical alignment of the workpiece central axis with the rotation axis to the calculated rotation angle based on detected vertex position. Instead of mechanically ensuring axis coincidence, the system detects the vertex position and dynamically adjusts the rotation angle parameter to achieve perpendicular blade orientation.
2Manufacturing precision
If the central axis of the workpiece and the workpiece rotation axis are made to match each other to ensure perpendicular blade orientation, then processing accuracy is improved, but the size of the device increases to accommodate larger movable ranges
Solution Approach 1:
The patent applies partial action by only detecting and correcting the specific vertex position that affects cutting accuracy, rather than ensuring complete alignment of the entire workpiece axis with the rotation axis. This partial detection approach achieves the necessary perpendicular blade orientation without requiring the full alignment capability that would demand larger device dimensions.
Solution Approach 2:
The optical detection and calculation system replaces the need for large mechanical adjustment ranges. Instead of mechanically accommodating various workpiece positions through large movable ranges, the system uses light detection and computational adjustment to achieve precise perpendicular orientation with minimal mechanical movement.
3Manufacturing precision
If workpiece attaching accuracy is increased to ensure axis matching, then processing accuracy is improved, but the ease of operation decreases due to stricter attachment requirements
Solution Approach 1:
The detection unit automatically detects the vertex position of the workpiece regardless of its initial attachment accuracy. The system performs self-alignment by detecting the actual vertex position and calculating the appropriate rotation angle, eliminating the need for the operator to manually achieve precise axis alignment during attachment.
Solution Approach 2:
The system implements feedback by using the detection unit to continuously monitor the vertex position and adjusting the rotation angle based on this feedback. This closed-loop control allows the system to compensate for attachment inaccuracies automatically, maintaining high processing accuracy while simplifying the attachment operation.
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.