Novel Machine Tool Compensation System Developed by National Taiwan University Researchers

Strategic Insights -

Researchers at National Taiwan University have created a revolutionary machine tool compensation system that tackles the long-standing issue of thermal deformation in machine tools. This new system, patented in the United States, utilizes an optical non-contact type sensor group to accurately measure the displacement error caused by thermal expansion, providing a precise compensation for machine tool errors.

Key Takeaways:

  • The system is designed to address the issue of thermal deformation in machine tools, which can lead to errors and inaccuracies in product manufacturing.
  • The machine tool compensation system utilizes an optical non-contact type sensor group to measure the displacement error caused by thermal expansion.
  • The system includes a sensing head, plural ball lens devices, and more than one temperature sensors to measure temperature data externally.
  • The signal processor is used to receive temperature data from the temperature sensors and use it for compensation.
  • The system is suitable for use in multiaxial machine tools, providing a precise compensation for machine tool errors.
  • The system includes four ball lens devices, fixed to a top surface of the platform in an arrangement of a matrix.
  • Each of the fixed seats is a magnetic seat, magnetically attached and fixed to the top surface of the platform.

Statistics:

  • The drive system thermal temperature rise test and compensation system was patented in the United States under patent number 12442694.
  • The patent was filed on September 19, 2022, and published online on October 14, 2025.
  • The system is designed to provide precise compensation for machine tool errors caused by thermal deformation.
  • The system can be used in multiaxial machine tools, including those with three axes (X, Y, and Z).
  • The system includes four ball lens devices, which are fixed to a top surface of the platform in an arrangement of a matrix.
  • Each of the fixed seats is a magnetic seat, magnetically attached and fixed to the top surface of the platform.

Sources:

  • Chang, Yu-Wei. Drive system thermal temperature rise test and compensation system. U.S. Patent Number 12442694, filed September 19, 2022, and published online on October 14, 2025.
  • Patent URL (for desktop use only): https://ppubs.uspto.gov/pubwebapp/external.html?q=(12442694)&db=USPAT&type=ids