Laser Processing Control Unit Daisy-Chain Data Synchronization
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Solution Overview
Problem
Conventional laser processing systems experience processing errors due to time lags in data transfer between the axis driving section and the laser oscillator, which deteriorate accuracy, especially at higher processing speeds, and are costly to mitigate by shortening data transfer cycles or increasing speeds.
Innovation Solution
A laser processing system with a control unit that connects the axis driving section and the laser oscillator in a daisy-chain mode, converting motion and laser output-condition data into serial data using a common communication format and transmitting it at a predetermined command cycle, synchronized by a signal generating section, to minimize time lag and maintain high accuracy without increasing system costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If data transfer cycles are shortened or transfer speeds are increased to reduce time lag, then manufacturing precision improves, but device complexity and cost increase
Solution Approach 1:
The patent combines the data transfer interfaces for the axis driving section and laser oscillator into a single unified interface. The control unit integrates both data streams through a common communication pathway with standardized protocols, eliminating the need for separate high-speed transfer channels. This merging approach reduces system complexity while maintaining synchronized data delivery to both components, thereby improving manufacturing precision without increasing device complexity.
2Manufacturing precision
If data transfer speeds are increased to reduce time lag, then manufacturing precision improves, but use of energy and system cost increase
Solution Approach 1:
The patent changes the parameter of data transfer from high-speed separate channels to standardized medium-speed unified communication. By adjusting the communication protocol parameters and using efficient data packing methods, the system achieves synchronized data transfer without requiring excessive transfer speeds. This parameter optimization reduces energy consumption while maintaining the precision required for accurate laser processing.
3Adaptability or versatility
If separate interfaces are used for axis driving section and laser oscillator, then adaptability to different devices improves, but time lag increases reducing manufacturing precision
Solution Approach 1:
The patent implements a universal interface design that serves both the axis driving section and laser oscillator through a single communication channel. The control unit employs a multi-functional data transfer system that can accommodate different device types and protocols while maintaining synchronized operation. This universal interface approach preserves adaptability to various devices while eliminating the time lag that would otherwise occur with separate interfaces, thereby improving manufacturing precision.
Data Source
AI summary
A laser processing system including a laser processing machine capable of operating along an inherent control axis, an axis driving section driving the control axis of the laser processing machine, a laser oscillator supplying a laser beam to the laser processing machine, a control unit controlling the axis driving section and the laser oscillator, and a transfer line connecting the axis driving section and the laser oscillator to the control unit in a daisy-chain mode. The control unit includes a data preparing section preparing, from a given laser processing program, motion data commanded to the axis driving section and laser output-condition data commanded to the laser oscillator; a data converting section converting the motion data and the laser output-condition data, prepared by the data preparing section, into serial data including the motion data and the laser output-condition data described in a time-series fashion, based on a communication data format common to the axis driving section and the laser oscillator; and a data transmitting section transmitting the serial data, obtained by the data converting section, to the transfer line at a predetermined command cycle common to the motion data and the laser output-condition data included in the serial data.