Cutting Apparatus Transparent Plate Camera Alignment
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Solution Overview
Problem
Conventional cutting apparatuses struggle to accurately detect oblique cuts in plate-shaped workpieces due to deviations between the imaging regions of cameras located above and below, leading to difficulties in identifying positional discrepancies between the upper and lower ends of kerfs.
Innovation Solution
A cutting apparatus with a transparent support plate and two cameras, where positional deviation amounts between the imaging regions are calculated and stored, allowing for adjustment of camera positions to ensure secure imaging by one camera of the region imaged by the other, thereby facilitating accurate detection of oblique cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two cameras are used to image the workpiece from above and below, then the ability to detect oblique cuts is improved, but the positional alignment between the imaging regions of the two cameras deteriorates
Solution Approach 1:
A transparent support plate is introduced as an intermediary element that enables optical communication between the upper and lower imaging regions. The support plate allows light to pass through while providing a stable reference frame for positioning the cameras, thereby mediating the alignment between the two imaging systems without compromising either detection capability or positional accuracy
Solution Approach 2:
The imaging system creates optical copies of the workpiece from both upper and lower perspectives simultaneously. By using the transparent support plate to maintain precise spatial relationships, the system captures corresponding features from both views, enabling comparison and detection of oblique cuts through image correlation while preserving accurate positional mapping
2Measurement precision
If the imaging regions of the two cameras are adjusted to align perfectly, then the detection of oblique cuts is improved, but the complexity of the positioning system increases
Solution Approach 1:
The transparent support plate serves a dual function: it supports the workpiece during cutting operations and simultaneously acts as a reference element for camera alignment. By integrating these functions into a single component, the system achieves self-alignment capabilities without requiring complex external positioning mechanisms, thereby improving detection accuracy while minimizing system complexity
Solution Approach 2:
The support plate is designed to perform multiple functions: mechanical support for the workpiece, optical transmission medium for imaging, and alignment reference for camera positioning. This multi-functionality eliminates the need for separate alignment fixtures or complex positioning systems, achieving precise kerf position detection while keeping the device structure simple and integrated
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables proper detection of oblique cuts by ensuring that the imaging regions of both cameras align, enhancing the ability to identify and address defects in the cutting process, thus improving chip yield.
Implementation Method 1
a table that includes a support plate transparent in a visible region
Data Source
AI summary
A cutting apparatus includes a table including a support plate transparent in a visible region, a cutting unit, a first feeding mechanism that includes a first moving section for supporting the table and a first motor, a second feeding mechanism that includes a second moving section for supporting the cutting unit and a second motor, a first camera disposed on the side of a first surface of the support plate, a second camera disposed on the side of a second surface opposite to the first surface of the support plate, and a storage section that stores positional deviation amounts in the X-axis direction and the Y-axis direction between an imaging region at a reference position of the first camera and an imaging region at a reference position of the second camera.