公开(公告)号：US20220212304A1

公开(公告)日：2022-07-07

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 ,  B23Q17/20 ,  B23Q17/22

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：US20200218225A1

公开(公告)日：2020-07-09

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 ,  G05B19/406 ,  G05B19/416 ,  B23Q15/013 ,  B23Q15/12

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：US20180136636A1

公开(公告)日：2018-05-17

申请号：US15392498

申请日：2016-12-28

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chia-Pei WANG ,  Chien-Chih LIAO ,  Hsiao-Chen HO ,  Jen-Ji WANG

IPC: G05B19/416

CPC classification number: G05B19/416 ,  B23Q5/04 ,  B23Q5/326 ,  G05B19/414 ,  G05B2219/35026 ,  G05B2219/49355

Abstract: A machine tool feed drive design system is provided, which may include a component database, a detection module, a load condition estimation module and a calculation module. The component database may store the specification data of a plurality of feed drive components. The detection module may detect a plurality of operation signals from a machine tool during a period of time when the machine tool had been executing a machining process to a workpiece. The load condition estimation module may calculate a plurality of actual load conditions according to the operation signals and a device specification parameter of a feed drive of the machine tool. The calculation module may select at least one component combination from the feed drive components according to the actual load conditions and the specification data of the feed drive components to serve as an optimized feed drive specification.

公开(公告)号：US20230168155A1

公开(公告)日：2023-06-01

申请号：US17562852

申请日：2021-12-27

Applicant: Industrial Technology Research Institute

Inventor： Yi-Jin LIN ,  Shuo-Peng LIANG ,  Chien-Chih LIAO ,  Tzuo-Liang LUO ,  Wan-Kun CHANG ,  Jen-Ji WANG

IPC: G01M99/00

CPC classification number: G01M99/005

Abstract: A process diagnosis system includes a digital twin calculation unit, a process diagnosis calculation unit, and a remote calculation analysis unit. The digital twin calculation unit obtains a vibration-related parameter and a cutting-related parameter of a processing device, and performs a simulation calculation for the vibration-related parameter, the cutting-related parameter and a three-dimensional model corresponding to the processing device to generate a three-dimensional calculation result. The process diagnosis calculation unit receives a three-dimensional calculation result and displays the three-dimensional calculation result. The remote calculation analysis unit receives the three-dimensional calculation result, and performs a simulation analysis for the three-dimensional calculation result to generate an analysis result.

公开(公告)号：US20180128345A1

公开(公告)日：2018-05-10

申请号：US15384933

申请日：2016-12-20

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chen-Yu Kai ,  Jen-Ji WANG ,  Jung-Che Lee ,  Yi-Hsuan Chen ,  Chung-Yu Tai

IPC: F16F15/00 ,  F16F15/04 ,  B23Q11/00

CPC classification number: F16F15/002 ,  B23Q11/0039 ,  B23Q2220/006 ,  F16F7/116 ,  F16F15/04 ,  F16F2228/04 ,  F16F2230/186

Abstract: A vibration absorber includes a screw, a displacement adjustment member, a first spring, a second spring, a mass block, a casing, a cover and a connector. The displacement adjustment member is engaged with the screw. The mass block is located between the first spring and the second spring, wherein the mass block respectively connects the first spring and the second spring on both sides and the screw passes through the mass block. The casing encloses the screw, the displacement adjustment member, the first spring, the second spring and the mass block. The cover covers one opening of the casing. The connector covers the other opening of the casing. The first spring is located between the mass block and the displacement adjustment member and connects respectively the mass block and the displacement adjustment member. The coefficients of elasticity of both the first spring and the second spring are both non-linear.

公开(公告)号：US20240157496A1

公开(公告)日：2024-05-16

申请号：US18067904

申请日：2022-12-19

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chun-Ting CHEN ,  Jheng-Jie LIN ,  Chien-Chih LIAO ,  Jen-Ji WANG

IPC: B23Q17/09 ,  B23Q17/12

CPC classification number: B23Q17/0971 ,  B23Q17/12

Abstract: A method for facilitating analysis of causes of machining defects is provided. The method is carried out by a computer system. The method includes the step of obtaining motion data and vibration acceleration data about the tip of a cutter mounted on a machine tool. The method further includes the step of obtaining time-frequency information about the vibration acceleration data by performing a time-frequency analysis on the vibration acceleration data. The method further includes the step of obtaining vibration-displacement data by normalizing the time-frequency information. The method further includes the step of obtaining amplitude-distribution data about the tip by synchronizing the motion data and the vibration-displacement data.

公开(公告)号：US20170100810A1

公开(公告)日：2017-04-13

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.

公开(公告)号：US20210208565A1

公开(公告)日：2021-07-08

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 ,  G06T7/00 ,  G06T17/20

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：US20190196444A1

公开(公告)日：2019-06-27

申请号：US15853339

申请日：2017-12-22

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Jheng-Jie LIN ,  Jen-Ji WANG ,  Kuo-Hua CHOU ,  Chien-Chih LIAO ,  Hsiao-Chen HO

IPC: G05B19/408 ,  G05B19/39 ,  G05B17/02

CPC classification number: G05B19/408 ,  G05B17/02 ,  G05B19/39 ,  G05B19/4145 ,  G05B2219/42163

Abstract: A tool machine servo control simulation device and an establishing method of structure model are provided. The tool machine servo control simulation device includes a structure model and a processor. The structure model includes a position function, a velocity function and a drive property parameter. The processor includes a control signal receiver and a simulation component. The control signal receiver is used for receiving a servo command. The simulation component, response to the servo command, generates a simulation path according to the position function, the velocity function and the drive property parameter.

公开(公告)号：US20190145480A1

公开(公告)日：2019-05-16

申请号：US15851508

申请日：2017-12-21

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Hung-I LU ,  Chien-Chih LIAO ,  Jen-Ji WANG ,  Yun-Chiao CHEN

IPC: F16F7/10 ,  H02K7/14 ,  F16F7/104

Abstract: An adjustable damper includes a base, a first and second slidable members, a movable seat, a mass unit, and a first and second cantilevers. The first slidable member is slidably disposed on the base in a first direction. The movable seat is slidably disposed on the base in a second direction orthogonal to the first direction. The second slidable member is slidably disposed on the movable seat in the second direction. The mass unit is slidably disposed on the movable seat in the first direction. The first cantilever is fixed to a first connecting member. The first connecting member is connected to the movable seat. The first slidable member movably is disposed on the first cantilever. The second cantilever is fixed to a second connecting member. The second connecting member is connected to the mass unit. The second slidable member is movably disposed on the second cantilever.