Coordinate Conversion Control for Shared Machine-Tool Positions
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Solution Overview
Problem
Control systems using independent coordinate systems face challenges in communicating and coordinating specific non-common positions between machines and tools, such as robots and galvanometer scanners, leading to inconvenience in laser irradiation and processing.
Innovation Solution
A control system with a conversion unit that converts coordinate systems and a storage unit to share specific positions and postures between machines and tools using a common coordinate system, allowing for improved coordination and convenience in control operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If independent coordinate systems are used for machine and tool control, then each device can operate with its own optimized control parameters, but coordination and communication of specific positions between machine and tool become difficult
Solution Approach 1:
The patent introduces a coordinate system conversion unit as an intermediary component that receives position information from the machine coordinate system, converts it to the tool coordinate system, and transmits it to the tool controller. This mediator resolves the information loss problem by establishing a translation bridge between the two independent coordinate systems, enabling accurate position coordination without requiring either system to change its native coordinate framework.
2Adaptability or versatility
If independent coordinate systems are used for machine and tool control, then each device maintains its own coordinate framework, but storing and displaying specific positions in a common system becomes inconvenient
Solution Approach 1:
The coordinate system conversion unit serves as an intermediary that enables position information to be stored and displayed in either coordinate system as needed. The conversion unit receives position data in the machine coordinate system, converts it to the tool coordinate system, and makes it available for storage and display operations, thereby maintaining coordinate system independence while improving operational convenience.
3Loss of information
If coordinate system conversion is implemented, then position information can be shared between machine and tool, but system complexity increases due to additional conversion mechanisms
Solution Approach 1:
The patent implements a dedicated coordinate system conversion unit as a modular intermediary component. This conversion unit is integrated into the control system architecture and performs automatic real-time coordinate transformations. By encapsulating the conversion logic in a dedicated module, the system achieves position information sharing while managing complexity through structured design rather than distributed conversion logic throughout the system.
Data Source
AI summary
This control system includes a machine and a tool driven and controlled by using independent coordinate systems that differ from each other, and a control device that controls at least one of the machine or tool. The control system comprises a conversion unit that converts the coordinate systems, and a storage unit that stores, in the coordinate values of a shared coordinate system shared with the machine and tool, at least one of a specific position and orientation that are not shared between the machine and tool.