Patents by Inventor Tongshun Liu

Tongshun Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • MEASUREMENT METHOD AND SYSTEM OF UNDEFORMED CHIP THICKNESS IN MICRO-MILLING
    Publication number: 20240029229
    Abstract: The invention provides a measurement method and system of undeformed chip thickness in micro-milling. This method includes the steps of: S1: acquiring a surface topography picture of the bottom of a flute after micro-milling; S2: extracting a tool mark at the central line of the flute from the surface topography picture; S3: calculating a spacing distance between adjacent tool marks and calculating the difference of equivalent cutting radius between adjacent cutter teeth based on the spacing distance between adjacent tool marks; and S4: reconstructing the instant undeformed chip thickness in micro-milling based on the difference of equivalent cutting radius between adjacent cutter teeth.
    Type: Application
    Filed: July 12, 2022
    Publication date: January 25, 2024
    Inventors: Tongshun LIU, Kedong ZHANG, Chengdong WANG, Xuhong GUO
  • Measurement method and system of undeformed chip thickness in micro-milling
    Patent number: 11869180
    Abstract: The invention provides a measurement method and system of undeformed chip thickness in micro-milling. This method includes the steps of: S1: acquiring a surface topography picture of the bottom of a flute after micro-milling; S2: extracting a tool mark at the central line of the flute from the surface topography picture; S3: calculating a spacing distance between adjacent tool marks and calculating the difference of equivalent cutting radius between adjacent cutter teeth based on the spacing distance between adjacent tool marks; and S4: reconstructing the instant undeformed chip thickness in micro-milling based on the difference of equivalent cutting radius between adjacent cutter teeth.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: January 9, 2024
    Assignee: SOOCHOW UNIVERSITY
    Inventors: Tongshun Liu, Kedong Zhang, Chengdong Wang, Xuhong Guo