Volumetric verification of multiaxis machine tool using laser tracker.

Area of Science:

• Metrology and Measurement Science
• Mechanical Engineering
• Manufacturing Technology

Background:

• Accurate machine tool performance is critical for precision manufacturing.
• Traditional volumetric error verification methods can be time-consuming and complex.
• A unified methodology for diverse machine tool configurations is needed.

Purpose of the Study:

• To present a universal methodology for volumetric verification of machine tools using a laser tracker.
• To detail a kinematic model for machines with linear and rotary axes.
• To employ nonlinear optimization for improving machine tool accuracy through mathematical compensation.

Main Methods:

• Utilizing a laser tracker for indirect measurement of geometric errors.
• Developing a kinematic model incorporating linear and rotational axes.
• Applying nonlinear optimization techniques to refine machine tool accuracy.
• Analyzing regression functions, measurement methods, and optimization strategies based on machine configuration and workspace.

Main Results:

• A generalized methodology for volumetric verification applicable to various machine tools.
• Identification of the most appropriate verification strategies based on machine configuration and workspace constraints.
• Demonstration of mathematical compensation for volumetric error, reducing verification time compared to physical methods.

Conclusions:

• The proposed laser tracker methodology offers a flexible and efficient approach to machine tool volumetric verification.
• The study provides a comprehensive analysis to guide the selection of optimal verification strategies for different machine tools.
• Mathematical compensation derived from this method can significantly improve machine tool accuracy and reduce setup time.