Cut Piece Projection Control for Variable Plate Thickness
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Solution Overview
Problem
Existing information projecting methods struggle to accurately project information onto cut pieces with varying plate thicknesses or stack heights, requiring frequent adjustments in projector position and zoom ratio.
Innovation Solution
A laser processing apparatus with a shuttle table system and a projector positioned to maintain a constant relationship in the X, Y, and Z axes, using adjustable height and zoom settings to ensure accurate projection regardless of plate thickness or stack height changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the projector position and zoom ratio are adjusted for each different plate thickness or stack height, then the information can be projected accurately onto the top face of the cut piece, but the operation complexity and time consumption increase significantly
Solution Approach 1:
The system automatically detects the top face height position of the cut piece and calculates the required projector position and zoom ratio without manual intervention. The control unit performs self-adjustment based on detected parameters, eliminating the need for operators to manually adjust the projector for each different plate thickness or stack height.
Solution Approach 2:
The system dynamically changes projector parameters (position and zoom ratio) based on detected plate thickness and stack height variations. The control unit calculates optimal projection parameters automatically and adjusts the projector accordingly, allowing accurate projection across varying work conditions without manual reconfiguration.
2Measurement precision
If the projector position is fixed and zoom ratio is adjusted based on plate thickness, then the projection accuracy is maintained, but the device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it controls the laser processing apparatus, operates the plate thickness measuring unit, detects top face height position, calculates projection parameters, and adjusts the projector. This multi-functional integration reduces overall system complexity by consolidating control functions into a single intelligent unit.
Solution Approach 2:
The control unit acts as an intermediary between the plate thickness measuring unit and the projector. It receives thickness data, calculates the appropriate zoom ratio and position adjustments, and transmits control signals to the projector, thereby mediating the relationship between measurement and projection functions.
3Measurement precision
If manual adjustment of projector position and zoom ratio is performed for each plate thickness variation, then projection accuracy is maintained, but productivity decreases due to frequent adjustments
Solution Approach 1:
The system maintains continuous operation by automatically detecting plate thickness and adjusting projector parameters without interrupting the workflow. The plate thickness measuring unit continuously monitors variations, and the control unit continuously adjusts projection parameters, ensuring uninterrupted accurate projection throughout the sorting process.
Solution Approach 2:
The system implements a feedback loop where the plate thickness measuring unit continuously measures the workpiece thickness, the control unit processes this information and calculates required adjustments, and the projector automatically adjusts its parameters. This closed-loop feedback system ensures accurate projection while eliminating manual intervention time.
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 consistent and efficient projection of information onto cut pieces, improving sorting efficiency by maintaining a fixed projector position and adjusting the zoom ratio based on plate thickness, ensuring accurate placement and handling of cut pieces.
Implementation Method 1
projecting device arranged at an upper part of the shelf device... project information concerning a cut piece onto a top face of the cut piece
Data Source
Figure 1
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Figure 4~5
AI summary
An information projecting method projects information concerning a cut piece onto the cut piece, which is cut and separated from a plate-like work and is on a placement table, or onto a position adjacent to the cut piece. To adjust to an aspect ratio (vertical to horizontal ratio) of a projector 21, the method assigns a long side of the work W to an X-axis direction, i.e., a horizontal direction of the aspect ratio and a short side of the work W to a Y-axis direction, i.e., a vertical direction of the aspect ratio, finds a positional relationship d between a top face of the work W and the projector 21 according to plate thickness information of the work W on the placement table 7 and 9 positioned corresponding to the projector 21 arranged at a predetermined Y-axis-direction position, and with a zoom ratio based on the found positional relationship d, projects the information concerning the cut piece onto the cut piece or onto a position adjacent to the cut piece.