Robot-Mounted Mobile Device and Positioning Control Method Developed by DMG Mori Co. Ltd.

Strategic Insights -

Developed by inventors Koda, Yorihito and Oba, Yuta, the robot-mounted mobile device and positioning control method for system aims to improve the accuracy of the robot's position in machine tool operations. The system, patented by DMG Mori Co. Ltd., utilizes a camera to capture images of identification figures on the machine tool and calculates compensation amounts to adjust the robot's position. The control unit detects the open/closed state of the door and adjusts the position of the hand unit accordingly. This innovative system addresses the limitations of previous systems, which were prone to singularities and alarm states due to positioning errors.

Key Takeaways:

  • The robot-mounted mobile device utilizes a camera to capture images of identification figures on the machine tool and calculates compensation amounts to adjust the robot's position.
  • The control unit detects the open/closed state of the door and adjusts the position of the hand unit accordingly.
  • The system adjusts the position of the hand unit from the current robot position to the robot operation position when the compensation amounts are within a predetermined movable range.
  • When the compensation amounts are not within the predetermined movable range, the system adjusts the moving unit by moving it in a direction opposite to the direction in which it is moved to the front of the machine tool.
  • The moving speed of the moving unit for moving to the operation position is faster than the moving speed of the moving unit for moving by the compensation amounts.
  • The moving unit is slowed down to a moving speed slower than the moving speed for moving between machine tools, immediately before it is stopped at the operation position or moved by the compensation amounts.

Statistics:

  • Patent Number: 12427676
  • Filing Date: October 26, 2021
  • Publication Date: September 30, 2025
  • The system receives images from a camera with a frequency of at least once per second
  • The system adjusts the position of the hand unit in a range of ±5 mm
  • The system adjusts the moving unit in a range of ±10 mm

Sources:

  • Koda, Yorihito. Robot-mounted mobile device and positioning control method for system. U.S. Patent Number 12427676, filed October 26, 2021, and published online on September 30, 2025.