公开(公告)号：US12066809B2

公开(公告)日：2024-08-20

申请号：US17470015

申请日：2021-09-09

Applicant: Chongqing University

Inventor： Shilong Wang ,  Chi Ma ,  Sibao Wang ,  Dechao Heng ,  Lingwan Zeng ,  Yong Yang ,  Canhui Yang

IPC: G05B19/40 ,  F16H57/01 ,  G05B19/404 ,  G05B19/406 ,  G06F30/10 ,  G06F30/27 ,  G06N5/01 ,  G06F119/02

CPC classification number: G05B19/404 ,  F16H57/01 ,  G05B19/406 ,  G06F30/10 ,  G06F30/27 ,  G06N5/01 ,  F16H2057/012 ,  G06F2119/02

Abstract: A method for identifying a critical error of a worm gear machine, step 1: obtaining an actual forward kinematic model T27a and an ideal forward kinematic model T27i from a coordinate system of a worm gear hob to a coordinate system of a worm gear, thereby establishing a geometric error-pose error model of the worm gear machine; step 2: regarding the geometric error-pose error model of the worm gear machine as a multi-input multi-output (MIMO) nonlinear system, and solving, by taking the geometric error of each motion axis of the worm gear machine as an input feature X, and a pose error between the worm gear hob and the worm gear as an output variable Y, an importance coefficient of each input feature with a random forest algorithm; and step 3: determining a critical error affecting a machining accuracy of the worm gear machine.

公开(公告)号：US12145208B2

公开(公告)日：2024-11-19

申请号：US17471130

申请日：2021-09-09

Applicant: CHONGQING UNIVERSITY

Inventor： Shilong Wang ,  Chi Ma ,  Sibao Wang ,  Dechao Heng ,  Lingwan Zeng ,  Yong Yang ,  Canhui Yang

IPC: B23F11/00 ,  B23F5/22 ,  B23F13/02 ,  B23F23/12 ,  B23Q1/62

Abstract: The present disclosure provides a worm gear machine, including a workbench, a cutter holder and a cutter holder adjusting system, where the cutter holder includes a big bracket, a first slide rail is disposed on the big bracket, a slide seat in sliding fit with the first slide rail is disposed on the first slide rail, a second slide rail is disposed on the slide seat, a small bracket in sliding fit with the second slide rail is disposed on the second slide rail; and a cutter holder spindle is disposed between the big bracket and the slide seat, a cutter bar synchronously rotating with the cutter holder spindle is disposed between an end of the cutter holder spindle facing toward the small bracket and the small bracket, and a gearbox for driving the cutter spindle to rotate is disposed in the big bracket.

公开(公告)号：US11415417B2

公开(公告)日：2022-08-16

申请号：US17272944

申请日：2020-09-25

Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS

Inventor： Yu Liu ,  Yongle Lu ,  Huihui Yang ,  Ke Di ,  Xinhai Zou ,  Zhen Fang ,  Jijun Bu ,  Yong Yang ,  Lele Fu

IPC: G01C19/5684 ,  G01C19/5733

Abstract: A cavity optomechanical vibratory gyroscope pertains to technical fields of resonant optical gyroscopes and micro-optical-electro-mechanical systems. A novel cavity optomechnical Coriolis vibratory micro gyroscope is realized based on ring micro rings and the Coriolis vibration principle, and driving and detection thereof is completely different from conventional electric or magnetic means. Based on the principle of angular velocity sensitive structures in the conventional Coriolis vibratory gyroscopes, full-optical driving, detecting and sensing of a vibratory gyroscope are achieved using cavity optomechnical technologies, which fundamentally suppresses various noises (including thermal noise, cross interference, connection point noise and quadrature error) introduced by electric or magnetic driving. Besides, displacement (vibration) sensing information is obtained according to a linear relationship between frequency shift and light amplitude in the micro cavity optomechnical effect.