Virtual Object Display via Machine Graph Transformation
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Solution Overview
Problem
Current virtual object display systems for machine tools are complex and require extensive production of virtual objects for both workpieces and machine tools, with low reproducibility, leading to increased costs and extended cycle times due to the need for actual machine operation checks and potential design changes.
Innovation Solution
A virtual object display system that includes a machine configuration management device and an augmented information controller, which generates a graph representing the machine configuration with camera nodes, allowing for the calculation and notification of transformation information to display virtual objects accurately without requiring extensive virtual object production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If virtual objects for entire machine tools are produced to perform machining simulation, then machining simulation can be performed before actual fixture completion, but the complexity of producing virtual objects increases significantly
Solution Approach 1:
The patent extracts only the essential functional components of the machine tool (tool holding portion, workpiece holding portion, movable parts) rather than creating complete virtual replicas of the entire machine. This allows machining simulation to proceed with simplified virtual objects that capture the critical elements needed for interference checking and operation validation.
Solution Approach 2:
The machine tool is segmented into discrete functional components (tool holding portion, workpiece holding portion, movable parts, camera positions) that can be independently modeled and managed. This segmentation reduces the overall complexity by breaking down the complex machine tool into manageable virtual object segments.
2Reliability
If virtual objects are produced with high detail to improve reproducibility, then the difference from reality decreases, but the difficulty and cost of producing virtual objects increases
Solution Approach 1:
The patent applies different levels of detail and accuracy to different parts of the virtual objects based on their importance. Critical components like the tool holding portion and workpiece holding portion are modeled with high precision to ensure accurate interference checking, while less critical areas use simplified representations. This local quality approach maintains reproducibility for essential functions while reducing overall production complexity.
3Measurement precision
If operation check is performed with actual machine, then the simulation is accurate, but the process stops until actual fixture is completed and additional costs are incurred
Solution Approach 1:
The patent enables preliminary machining simulation to be performed using simplified virtual objects before the actual fixture is manufactured. The virtual tool holding portion and workpiece holding portion allow operation checks and interference detection to proceed in advance, eliminating the waiting period and enabling parallel development of machining programs and fixture manufacturing.
Data Source
AI summary
A virtual object is displayed with a simple method. A graph generation portion generates, as the machine configuration of a control target, a graph in which constituent elements including a camera are nodes, a node selection portion selects a node on which a virtual object is desired to be displayed, a selection node notification portion notifies the node on which the virtual object is desired to be displayed to a machine configuration management device, a transformation information calculation portion calculates transformation information which includes, as a variable, a coordinate value of a control axis node on a path in the graph from a camera node to the node of a display target and which is used for calculating the position and/or the posture of the node of the display target in a coordinate system of the camera node based on the graph, a transformation information notification portion notifies the transformation information to an augmented information controller and a coordinate information transformation portion transforms the coordinate value of a control axis which is notified into the position and/or the posture of the node of the display target in the coordinate system of the camera node.