公开(公告)号：US10698383B1

公开(公告)日：2020-06-30

申请号：US16352097

申请日：2019-03-13

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Jheng-Jie Lin ,  Kuo-Hua Chou ,  Chien-Chih Liao ,  Jen-Ji Wang

IPC: G05B19/404 ,  B23Q15/013 ,  H02P5/48 ,  G05B19/406 ,  B23Q15/12 ,  G05B19/416

Abstract: A method of load characteristic identification and acceleration adjustment for a machine tool is provided. A first acceleration of a transmission system is set according to the weight of a workpiece, and the working platform and the workpiece are driven at the first acceleration. A first elastic deformation of the transmission system and an amount of first position error of the transmission system are calculated when transmission system is moved at the first acceleration. A dynamic error is calculated according to the first elastic deformation and the first position error. When the dynamic error is less than or greater than a target error, a second acceleration is set to the transmission system, and a second elastic deformation and a second position error are calculated when the transmission system moves at the second acceleration unit the dynamic error is converged to the target error.

公开(公告)号：US11675337B2

公开(公告)日：2023-06-13

申请号：US17227666

申请日：2021-04-12

Applicant: Industrial Technology Research Institute

Inventor： Jheng-Jie Lin ,  Kuo-Hua Chou ,  Chien-Chih Liao ,  Jen-Ji Wang

IPC: G05B19/416 ,  B23Q17/09

CPC classification number: G05B19/4163 ,  B23Q17/0961

Abstract: A system for acceleration adjustment of machine tool at rapid traverse includes a signal measurement module, a signal judgment module and an acceleration optimization module. The machine tool has a servo motor and a working platform. The signal measurement module measures signals while the servo motor drives the working platform from a first specific position to a second specific position, or from the second specific position back to the first specific position. The signal judgment module judges whether the actual maximum current value of the motor is equal to the manufacturer's specification according to the signals; and if negative, the acceleration optimization module calculates and optimizes an axial acceleration till an optimal value is achieved. Then, a curve smoothing time of the optimal acceleration is calculated and optimized by the acceleration optimization module. In addition, a method for acceleration adjustment of machine tool at rapid traverse is provided.

公开(公告)号：US11654522B2

公开(公告)日：2023-05-23

申请号：US17179093

申请日：2021-02-18

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chien-Chih Liao ,  Kuo-Hua Chou ,  Cheng-Wei Wang ,  Jen-Ji Wang

IPC: B23Q15/24 ,  B23Q17/22 ,  B23Q17/20 ,  G05B19/41 ,  G05B19/402

CPC classification number: B23Q15/24 ,  B23Q17/20 ,  B23Q17/2266 ,  B23Q2717/00 ,  G05B19/402 ,  G05B19/41 ,  G05B2219/37506

Abstract: A method for analyzing an overcutting defect of a machining process comprises steps as following. A machining code is executed to generate a cutting face, wherein the cutting face comprises a plurality of machining paths. A specified machining path is defined from the plurality of machining paths and a specified node is set on the specified machining path. A sectional plane passing through the specified node is calculated. A plurality of intersection points between the sectional plane and the other machining paths which are different from the specified machining path are obtained. A first adjacent intersection point a second adjacent intersection point are specified from the intersection points. A connection line located between the first adjacent intersection point and the second adjacent intersection point is obtained. A distance between the specified node and connection line is calculate and the distance is defined as an overcutting amount of the specified node.

公开(公告)号：US11119465B2

公开(公告)日：2021-09-14

申请号：US15930949

申请日：2020-05-13

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Cheng-Wei Wang ,  Kuo-Hua Chou ,  Chien-Chih Liao ,  Jen-Ji Wang

IPC: G05B19/4069 ,  G05B19/4068 ,  G05B19/41 ,  G06T17/20 ,  G06T7/00

Abstract: A method for inspecting defects of a machining path is provided. The method includes the following steps. Firstly, a contour mold with a plurality of surface nodes is generated according to a machining program code. Next, a normal vector of each surface node of the contour mold is calculated. Then, a tangent vector of a block of the machining program code corresponding to the normal vector is calculated. Afterwards, an error information is obtained according to a relation between the normal vector and the tangent vector. When the error information is greater than a predetermined value, a defect information is shown on the contour mold.