Patents by Inventor Yongfei Lai

Yongfei Lai 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).

  • Patent number: 11072078
    Abstract: A method for measuring a pose of a robotic end tool, including: obtaining a three-dimensional feature of a flange and a three-dimensional feature of the end tool, establishing a first coordinate system and a second coordinate system at the center of the flange and the center of the end tool respectively, calculating a positional offset of the second coordinate system relative to the first coordinate system, and calculating a rotation offset of the second coordinate system relative to the first coordinate system according to each unit vector of the second coordinate system, so as to obtain a pose of the end tool relative to the flange. The method provided in the present application, compared with the manual observation method, the precision and stability of the pose measurement method are high.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: July 27, 2021
    Assignee: YUANMENG PRECISION TECHNOLOGY (SHENZHEN) INSTITUTE
    Inventors: Yongfei Lai, Yan Nie, Junqi Li, Qing Liu
  • Publication number: 20210197329
    Abstract: A Parts fixture for robot machining and a robot machining system, includes a base plate for connecting with a robot machining platform, and a profiling surface disposed at the base plate for placing parts to be machined. The profiling surface has the same shape as the parts to be machined, and an edge of the base plate is provided with a pressing block for pressing the parts to be machined. The profiling surface can be completely matched with the parts to be machined, it ensures that the bottom of the parts to be machined is supported during the machining, so that the parts to be machined does not vibrate during the machining Therefore the machining accuracy of the parts to be machined can meet the machining requirements.
    Type: Application
    Filed: January 29, 2018
    Publication date: July 1, 2021
    Applicant: YUANMENG PRECISION TECHNOLOGY (SHENZHEN) INSTITUTE
    Inventors: Qing LIU, Junqi LI, Yongfei LAI, Yan NIE
  • Publication number: 20210197396
    Abstract: A method for measuring a pose of a robotic end tool, including: obtaining a three-dimensional feature of a flange and a three-dimensional feature of the end tool, establishing a first coordinate system and a second coordinate system at the center of the flange and the center of the end tool respectively, calculating a positional offset of the second coordinate system relative to the first coordinate system, and calculating a rotation offset of the second coordinate system relative to the first coordinate system according to each unit vector of the second coordinate system, so as to obtain a pose of the end tool relative to the flange. The method provided in the present application, compared with the manual observation method, the precision and stability of the pose measurement method are high.
    Type: Application
    Filed: October 19, 2017
    Publication date: July 1, 2021
    Applicant: YUANMENG PRECISION TECHNOLOGY (SHENZHEN) INSTITUTE
    Inventors: Yongfei LAI, Yan NIE, Junqi LI, Qing LIU
  • Publication number: 20180141188
    Abstract: A friction ratchet wrench suitable for being connected with a socket, comprising an outer shell with a regular polygonal friction cavity, a retainer rotatablely disposed in the friction cavity and a friction cylinder inside the retainer, wherein a joint connecting with the socket is disposed in the friction cylinder, friction elements are disposed at the peak angles of the friction cavity of the corresponding regular polygon in a rim of the retainer, and a toggle element drives the retainer to rotate in the friction cavity and makes an outside of the friction elements of the retainer cling to outer friction surface of the friction cavity and an inside of the friction elements cling to friction cylinder in the retainer.
    Type: Application
    Filed: May 23, 2017
    Publication date: May 24, 2018
    Applicant: HANGZHOU LI ER YI INDUSTRIAL CO., LTD.
    Inventor: Yongfei LAI
  • Patent number: 9528303
    Abstract: An anti-theft sleeve support, including a support and an anti-theft drop pin that is connected to the support and is snapped into the sleeve corner via the support. The support includes an octagonal hollow prism with four pairs of parallel opposite sides and a base integrated with the hollow prism. The octagonal hollow prism is capable of being inserted into the square head sleeve opposite sides; and an elastic external convex body is arranged on the exterior cylindrical surface of the opposite sides III and/or the opposite sides IV. The Invention is of simple structure and is characterized in that the support cylinder is inserted into the sleeve and rotated to a certain angle, and a drop pin is inserted into the sleeve corner to secure the support for reliable anti-theft performance.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 27, 2016
    Assignee: HANGZHOU LIERYI INDUSTRIAL CO., LTD.
    Inventor: Yongfei Lai