Cylindrical Workpiece Grooving with Optical Axis Correction
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Solution Overview
Problem
Existing workpiece processing devices face challenges in achieving high accuracy during grooving of cylindrical-shape workpieces, particularly due to misalignment between the workpiece's central axis and rotation axis, which affects the precision of ultrasonic probes and increases device size and cost for larger workpieces.
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 vertex position calculation, and a control unit to adjust the cutting position and blade direction, allowing for precise grooving without requiring central axis and rotation axis alignment.
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 accurate grooving, then the processing accuracy is improved, but the device size and cost increase for larger workpieces
Solution Approach 1:
The patent replaces the traditional mechanical alignment system (which requires precise matching of workpiece central axis and rotation axis) with an optical measurement system. A measurement unit captures images of the workpiece to detect its actual central axis position, and a control unit calculates correction amounts to adjust the workpiece position automatically, eliminating the need for large-scale mechanical alignment structures.
Solution Approach 2:
The patent introduces an image-based measurement system as an intermediary between the workpiece and the cutting system. By using camera images to detect the workpiece central axis and calculate positional corrections, the system mediates the alignment process without requiring direct mechanical contact or large adjustment ranges, thus reducing device size while maintaining accuracy.
2Manufacturing precision
If the central axis of the workpiece and the workpiece rotation axis are made to match each other to ensure accurate grooving, then the processing accuracy is improved, but the device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical alignment mechanisms with a simplified optical measurement and computational control system. Instead of using precision mechanical guides and adjustment mechanisms, the system uses image capture, central axis detection algorithms, and automated position correction to achieve accurate alignment, significantly reducing mechanical complexity.
Solution Approach 2:
The workpiece itself provides the alignment information through its geometric features (edges, vertices) that can be detected by the measurement system. The system automatically detects the workpiece central axis from images and calculates the necessary correction amounts, making the alignment process self-service without requiring external alignment tools or complex mechanical systems.
3Adaptability or versatility
If the workpiece supporting unit and cutting unit are designed to accommodate large workpieces with sufficient distance and movement range, then the adaptability to various workpiece sizes is improved, but the device size and cost increase
Solution Approach 1:
The patent implements dynamic position correction by detecting the workpiece central axis in real-time through image measurement and automatically adjusting the workpiece position based on calculated correction amounts. This dynamic adjustment mechanism allows the system to adapt to workpieces of various sizes without requiring fixed large movement ranges, as the system continuously optimizes the alignment during the processing cycle.
Solution Approach 2:
The system changes the operational parameters (workpiece position, rotation axis position) based on detected workpiece characteristics. By measuring the actual workpiece geometry and calculating optimal positioning parameters, the system adapts to different workpiece sizes and shapes without requiring physical reconfiguration or large device dimensions, thus achieving versatility with compact size.
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.