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Related Experiment Video

Updated: May 24, 2025

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Research on a New Method of Macro-Micro Platform Linkage Processing for Large-Format Laser Precision Machining.

Longjie Xiong1,2,3, Haifeng Ma1,2,3,4, Zheng Sun5

  • 1School of Mechanical Engineering, Shandong University, Jinan 250061, China.

Micromachines
|March 6, 2025
PubMed
Summary
This summary is machine-generated.

A new laser linkage processing method enhances high-speed, high-precision machining by smoothing trajectories. This approach optimizes the use of the galvanometer field-of-view, improving efficiency by up to 79%.

Keywords:
galvanometer scannerlaser processinglinkage processingmacro–micro structureoptimal timetrajectory distribution

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Area of Science:

  • Precision Engineering
  • Laser Material Processing
  • Robotics and Control Systems

Background:

  • Laser processing demands high speed, precision, and large formats.
  • Existing macro-micro structures (servo platform + galvanometer) have limitations in field-of-view utilization and motion distribution.
  • Current linkage processing methods struggle with continuous micro-segments and rely on empirical parameters.

Purpose of the Study:

  • To propose a novel laser linkage processing method for global trajectory smoothing.
  • To overcome limitations of existing methods in field-of-view usage and motion distribution.
  • To enhance efficiency and precision in laser machining applications.

Main Methods:

  • Developed a new laser linkage processing method for densely discretized paths.
  • Employed a finite impulse response (FIR) filter for servo platform trajectory smoothing with bounded acceleration.
  • Utilized vector subtraction for galvanometer trajectory generation, constrained by field-of-view.
  • Implemented global blending error control.

Main Results:

  • Achieved global trajectory smoothing for the servo platform.
  • Generated galvanometer trajectories via vector subtraction for accurate macro-micro motion distribution.
  • Experimental verification on a three-axis servo platform and galvanometer system.
  • Demonstrated a 79% processing efficiency increase over servo-only methods and 55% over previous linkage methods.
  • Confirmed good tracking performance on experimental platforms.

Conclusions:

  • The proposed method effectively balances processing efficiency and quality in laser machining.
  • It optimizes the utilization of the galvanometer's field-of-view.
  • The method is suitable for high-speed, high-precision, and large-format laser precision machining.