公开(公告)号：US11971324B2

公开(公告)日：2024-04-30

申请号：US18202953

申请日：2023-05-29

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： Zhaoyao Shi ,  Yanqiang Sun

IPC: G01M13/021

CPC classification number: G01M13/021

Abstract: A method for checking or testing the profile of the path of contact of involute helical cylindrical gears is disclosed. The crossed helical gear transmits motion through the profile of the path of contact, and checking or testing the profile of the path of contact can reflect the transmission quality and working stability of the gear and the actual motion condition. In the gear hobbing, the grinding, the shaving and other generating machining, the movement of tools and gears is achieved based on the profile of the path of contact, and controlling the profile of the path of contact has unique advantages in controlling the quality of gear processing.

公开(公告)号：US12292278B2

公开(公告)日：2025-05-06

申请号：US18214816

申请日：2023-06-27

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： Jiachun Lin ,  Xinyu Fan ,  Peng Wang ,  Yunfei Li ,  Baofeng He ,  Zhaoyao Shi

IPC: G01M13/021 ,  G01B5/20

Abstract: The present disclosure provides a method, a system, a device and a medium for measuring gear tooth profile roughness. The method includes: obtaining design parameters of a target gear pair and test parameters of each tooth profile working point; fitting a measured surface profile and a theoretical tooth profile curve to obtain a surface structure curve; calculating a Hertzian contact width according to the design parameters and the test parameters for each tooth profile working point on the theoretical tooth profile curve, and determining an evaluation length of surface roughness according to the Hertzian contact width; filtering the surface structure curve by means of a filter with a set wavelength to obtain a surface roughness profile; and determining surface roughness parameters of each tooth profile working point in a working area according to the surface roughness profile for each evaluation length.

公开(公告)号：US20240369342A1

公开(公告)日：2024-11-07

申请号：US18214816

申请日：2023-06-27

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： Jiachun Lin ,  Xinyu Fan ,  Peng Wang ,  Yunfei Li ,  Baofeng He ,  Zhaoyao Shi

IPC: G01B5/20 ,  G01M13/021

Abstract: The present disclosure provides a method, a system, a device and a medium for measuring gear tooth profile roughness. The method includes: obtaining design parameters of a target gear pair and test parameters of each tooth profile working point; fitting a measured surface profile and a theoretical tooth profile curve to obtain a surface structure curve; calculating a Hertzian contact width according to the design parameters and the test parameters for each tooth profile working point on the theoretical tooth profile curve, and determining an evaluation length of surface roughness according to the Hertzian contact width; filtering the surface structure curve by means of a filter with a set wavelength to obtain a surface roughness profile; and determining surface roughness parameters of each tooth profile working point in a working area according to the surface roughness profile for each evaluation length.