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：US11298787B2

公开(公告)日：2022-04-12

申请号：US16805133

申请日：2020-02-28

Applicant: Industrial Technology Research Institute

Inventor： Chun-Ting Chen ,  Chien-Chih Liao ,  Pei-Yin Chen ,  Bo-Jyun Jhang ,  Jen-Ji Wang

IPC: B23Q1/03 ,  B23Q3/10 ,  B23Q1/00 ,  B25B11/00 ,  B23Q15/00

Abstract: An adjustable workpiece support system includes an adjustable support apparatus, an analysis support point module, a coordinate post-processing module and a control module. The adjustable support apparatus has a group of support devices for supporting a supported workpiece, the each support device being adjustable in height and angle. The analysis support point module is used to import a computer-aided design file of the supported workpiece, and analyze the computer-aided design file to obtain a group of support points of the supported workpiece. The coordinate post-processing module is configured to calculate the support coordinates of the each support device corresponding to the group of support points. The control module is configured to receive the support coordinates of the each support device, and adjust the height and angle of the each support device to support the supported workpiece, so that the amount of deformation of the supported workpiece is the minimum.

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.

公开(公告)号：US09833868B2

公开(公告)日：2017-12-05

申请号：US14971438

申请日：2015-12-16

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Tsung-Ling Hwang ,  Chin-Te Lin ,  Shuo-Peng Liang ,  Ta-Jen Peng ,  Jen-Ji Wang ,  Tzuo-Liang Luo

IPC: B23Q17/09 ,  G05B19/404

CPC classification number: B23Q17/0976 ,  G05B19/404 ,  G05B2219/31407 ,  G05B2219/41115 ,  G05B2219/41256 ,  G05B2219/49075

Abstract: A chatter avoidance method and device is provided, including steps of: providing a stable operating condition plot; partially removing a first layer of a workpiece with a predetermined first removal depth according to a safe removal depth of the stable operating condition plot and sensing a chatter caused by the removal operation; if no chatter is sensed, completing the removal operation, otherwise, continuing to partially remove the first layer with a second removal depth less than the predetermined first removal depth; and determining a minimum removal depth according to the removal operation, and removing a last layer of the workpiece with a last removal depth less than or equal to the minimum removal depth, allowing the workpiece to have a target thickness. The disclosure prevents a chatter from continuously occurring without requiring a shut-down and thereby maintains a desired production rate.