Patents by Inventor Jen-Ji Wang

Jen-Ji Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11754472
    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.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: September 12, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yi-Jin Lin, Shuo-Peng Liang, Chien-Chih Liao, Tzuo-Liang Luo, Wan-Kun Chang, Jen-Ji Wang
  • Patent number: 11685008
    Abstract: A dodge method of machining path and a machining system is provided. By inserting a flag into an original machining path, an interference between the flag and a suction cup of a support unit is determined. A coding instruction is inserted at the interference to edit the original machining path, thereby generating an edited machining path. Therefore, when a machining equipment executes the edited machining path, the support unit may smoothly dodge a knife of the machining equipment.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: June 27, 2023
    Assignee: Industrial Technology Research Institute
    Inventors: Chun-Ting Chen, Cheng-Wei Wang, Po-Hsun Wu, Chien-Chih Liao, Jen-Ji Wang
  • Patent number: 11675337
    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.
    Type: Grant
    Filed: April 12, 2021
    Date of Patent: June 13, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jheng-Jie Lin, Kuo-Hua Chou, Chien-Chih Liao, Jen-Ji Wang
  • Publication number: 20230168155
    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.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 1, 2023
    Inventors: Yi-Jin LIN, Shuo-Peng LIANG, Chien-Chih LIAO, Tzuo-Liang LUO, Wan-Kun CHANG, Jen-Ji WANG
  • Patent number: 11654522
    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.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: May 23, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Chih Liao, Kuo-Hua Chou, Cheng-Wei Wang, Jen-Ji Wang
  • Patent number: 11577389
    Abstract: A method for reducing vibration of a robot arm includes: a step of mounting at least one inertia actuator and at least one vibration signal capturing unit to a processing end of a robot arm; a step of applying the at least one vibration signal capturing unit to detect a vibration generated at the processing end of the robot arm so as to generate a vibration signal; a step of applying a central processing unit to evaluate the vibration signal and coordinates of the processing end of the robot arm so as to capture at least one set of corresponding control parameters for calculating at least one output force; and, a step of having the inertia actuator to apply the output force to the processing end of the robot arm for counteracting the vibration at the processing end of the robot arm.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: February 14, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Hung-I Lu, Jen-Ji Wang, Chien-Chih Liao
  • Publication number: 20220214664
    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.
    Type: Application
    Filed: April 12, 2021
    Publication date: July 7, 2022
    Inventors: JHENG-JIE LIN, KUO-HUA CHOU, CHIEN-CHIH LIAO, JEN-JI WANG
  • Publication number: 20220212304
    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.
    Type: Application
    Filed: February 18, 2021
    Publication date: July 7, 2022
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Chih LIAO, Kuo-Hua CHOU, Cheng-Wei WANG, Jen-Ji WANG
  • Publication number: 20220176504
    Abstract: A method for adjusting a workpiece-supporting module includes: setting initial support position information of a workpiece, the initial support position information including positions of support devices and a spacing value for separating the support devices; according to the initial support position information, applying a finite element method to analyze a CAD file of the workpiece to obtain workpiece deformation information; according to the workpiece deformation information and target workpiece deformation information, realizing support position information corresponding to each support device, the support position information including X-axis coordinates and Y-axis coordinates; according to the support position information and a conversion program, obtaining a Z-axis coordinate and a normal vector of each support devices; and, according to the support position information, the Z-axis coordinate and the normal vector, adjusting the position and the angle of each support device.
    Type: Application
    Filed: April 8, 2021
    Publication date: June 9, 2022
    Inventors: CHUN-TING CHEN, CHIEN-CHIH LIAO, PEI-YIN CHEN, JEN-JI WANG, YU-SHENG LAI
  • Patent number: 11298787
    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.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: April 12, 2022
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chun-Ting Chen, Chien-Chih Liao, Pei-Yin Chen, Bo-Jyun Jhang, Jen-Ji Wang
  • Publication number: 20210299864
    Abstract: A method for reducing vibration of a robot arm includes: a step of mounting at least one inertia actuator and at least one vibration signal capturing unit to a processing end of a robot arm; a step of applying the at least one vibration signal capturing unit to detect a vibration generated at the processing end of the robot arm so as to generate a vibration signal; a step of applying a central processing unit to evaluate the vibration signal and coordinates of the processing end of the robot arm so as to capture at least one set of corresponding control parameters for calculating at least one output force; and, a step of having the inertia actuator to apply the output force to the processing end of the robot arm for counteracting the vibration at the processing end of the robot arm.
    Type: Application
    Filed: July 15, 2020
    Publication date: September 30, 2021
    Inventors: HUNG-I LU, JEN-JI WANG, CHIEN-CHIH LIAO
  • Patent number: 11119465
    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.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: September 14, 2021
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Wei Wang, Kuo-Hua Chou, Chien-Chih Liao, Jen-Ji Wang
  • Publication number: 20210208565
    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.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 8, 2021
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Wei WANG, Kuo-Hua CHOU, Chien-Chih LIAO, Jen-Ji WANG
  • Publication number: 20210154781
    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.
    Type: Application
    Filed: February 28, 2020
    Publication date: May 27, 2021
    Inventors: CHUN-TING CHEN, CHIEN-CHIH LIAO, PEI-YIN CHEN, BO-JYUN JHANG, JEN-JI WANG
  • Patent number: 10838403
    Abstract: A simulation method for milling by use of a dynamic position error includes the steps of: (a) generating a milling surface from a numerical control code, the milling surface having a plurality of grid points, the numerical control code having a position command; (b) calculating a normal vector for each of the plurality of grid points on the milling surface; (c) feeding back a position feedback of each of the plurality of grid points by the controller of the machine tool, and deriving a corresponding three-axis dynamic position error of the milling surface according to the position command and the position feedback; (d) calculating a component of the normal vector for the three-axis dynamic position error so as to obtain a normal-vector error value of the corresponding grid point; and, (e) displaying undercutting information of the normal-vector error value of the corresponding grid point on the milling surface.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 17, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Cheng-Wei Wang, Kuo-Hua Chou, Chien-Chih Liao, Jen-Ji Wang
  • Publication number: 20200218225
    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.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 9, 2020
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jheng-Jie LIN, Kuo-Hua CHOU, Chien-Chih LIAO, Jen-Ji WANG
  • Patent number: 10698383
    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.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: June 30, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jheng-Jie Lin, Kuo-Hua Chou, Chien-Chih Liao, Jen-Ji Wang
  • Publication number: 20200166906
    Abstract: A simulation method for milling by use of a dynamic position error includes the steps of: (a) generating a milling surface from a numerical control code, the milling surface having a plurality of grid points, the numerical control code having a position command; (b) calculating a normal vector for each of the plurality of grid points on the milling surface; (c) feeding back a position feedback of each of the plurality of grid points by the controller of the machine tool, and deriving a corresponding three-axis dynamic position error of the milling surface according to the position command and the position feedback; (d) calculating a component of the normal vector for the three-axis dynamic position error so as to obtain a normal-vector error value of the corresponding grid point; and, (e) displaying undercutting information of the normal-vector error value of the corresponding grid point on the milling surface.
    Type: Application
    Filed: December 21, 2018
    Publication date: May 28, 2020
    Inventors: CHENG-WEI WANG, KUO-HUA CHOU, CHIEN-CHIH LIAO, JEN-JI WANG
  • Patent number: 10613511
    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.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: April 7, 2020
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jheng-Jie Lin, Jen-Ji Wang, Kuo-Hua Chou, Chien-Chih Liao, Hsiao-Chen Ho
  • Patent number: 10495176
    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.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 3, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Hung-I Lu, Chien-Chih Liao, Jen-Ji Wang, Yun-Chiao Chen