Virtual Machine Tool Simulation with Realistic Tool Modeling
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Solution Overview
Problem
Existing virtual machine tools for simulating CNC machining deviate significantly from reality, making it difficult to accurately predict and prevent collisions during machining processes.
Innovation Solution
Incorporating a tool modeling system that generates tool configuration data from both tool data and geometry data, allowing for realistic simulation by mirroring the structure and dimensions of real machine tools, and enabling the transfer of real tool data to the virtual environment for enhanced accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a virtual machine tool is used to simulate CNC machining processes, then productivity is improved by enabling program testing and optimization before real machining, but manufacturing precision deteriorates because the simulation deviates from reality and cannot accurately predict collisions
Solution Approach 1:
The patent creates a virtual copy of the real machine tool including virtual machining units, virtual tool, and virtual workpiece that mirrors the physical system. This virtual model is used to simulate CNC machining processes and detect collisions before actual machining, improving both productivity through pre-testing and collision detection accuracy through realistic modeling
Solution Approach 2:
The system uses tool configuration data including tool center point coordinates, tool axis direction vectors, and tool geometry parameters to accurately represent the real tool in the virtual environment. By maintaining consistent parameters between real and virtual tools, the simulation achieves high fidelity for collision detection while enabling efficient program testing
2Manufacturing precision
If detailed tool configuration data is generated from tool data and geometry data, then manufacturing precision is improved by achieving realistic tool representation, but device complexity increases due to the additional tool modeling system components
Solution Approach 1:
The tool modeling system is divided into functional modules: a tool data processing unit that reads tool data from the CNC program, a geometry data processing unit that handles tool configuration parameters, and a tool configuration data generation unit that combines both. This segmentation manages system complexity while achieving accurate tool representation through coordinated data processing
3Manufacturing precision
If real tool data is transferred to the virtual machine tool before machining, then manufacturing precision is improved by enabling accurate collision detection, but loss of time occurs during the data transfer and simulation process
Solution Approach 1:
The system performs tool data transfer and virtual simulation before actual machining operations. By conducting collision detection in advance using the virtual model, the system prevents costly real-world errors while the data transfer overhead is minimal compared to the time saved by avoiding machining errors and rework
Data Source
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AI summary
The invention relates to a virtual machine tool for representing operations of machining units of the machine tool, especially operations during machining of a workpiece according to a CNC machining program package, using at least one first visualization unit, in the form of operations of virtual machining units. Said virtual machine tool comprises an operation control which has at least one first data processing unit that determines control commands for operations of the virtual machining units, using a control program processing CNC sets of the CNC machining program package, a visualization control comprising at least one second data processing unit that represents operations of the virtual machining units on the first visualization unit, using a visualization program and geometric configuration data of a stored machine model and the control commands determined by the operation control, and an operator control comprising a third data processing unit that operates the operation control, using an operator control program. The aim of the invention is to improve the virtual machine tool in such manner that the simulation of the machining of a virtual workpiece comes as close as possible to reality. The virtual machine tool according to the invention comprises a tool modeling system which allows the generation of tool configuration data for at least one virtual tool, using tool data and a tool model, and the supply thereof to the visualization program.