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).
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Patent number: 10495176Abstract: 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: GrantFiled: December 21, 2017Date of Patent: December 3, 2019Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Hung-I Lu, Chien-Chih Liao, Jen-Ji Wang, Yun-Chiao Chen
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Patent number: 10456881Abstract: The disclosure relates to a machine tool. The machine tool includes machine base, guide rails, and movable main structure. The movable main structure is slidably disposed on the machine base via the guide rails, and each guide rail has bearing surfaces. The machine tool has X-axis, Y-axis, and Z-axis, the Z-axis is substantially parallel to an axis of a chuck of the machine tool, and the Y-axis is substantially parallel to a sliding direction of the movable main structure. The machine tool characterized in that: normal directions of the bearing surfaces of the guide rails are not parallel to the X-axis, the Y-axis, the Z-axis of the machine tool and a reference line that passes through the guide rails.Type: GrantFiled: January 29, 2019Date of Patent: October 29, 2019Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wei Chen Lin, Jen Ji Wang, Hsiao Chen Ho, Wei Chu Lin
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Publication number: 20190196444Abstract: 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: ApplicationFiled: December 22, 2017Publication date: June 27, 2019Inventors: Jheng-Jie LIN, Jen-Ji WANG, Kuo-Hua CHOU, Chien-Chih LIAO, Hsiao-Chen HO
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Publication number: 20190145480Abstract: 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: ApplicationFiled: December 21, 2017Publication date: May 16, 2019Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Hung-I LU, Chien-Chih LIAO, Jen-Ji WANG, Yun-Chiao CHEN
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Patent number: 10268184Abstract: An apparatus and method for transforming NC programs are provided, and the apparatus is electrically connected to a controller configured to, according to a NC program, command a machine to drive a cutting tool to cut a workpiece. The apparatus includes a triggering module, a coordinate position processing module, and a storage module. The triggering module is electrically connected to the controller. The coordinate position processing module is electrically connected to the controller and the triggering module. The storage module is electrically connected to the coordinate position processing module. The triggering module triggers the controller to execute the NC program in a single block mode. The coordinate position processing module is triggered by the triggering module to acquire at least one coordinate position from the controller. The storage module stores the at least one coordinate position. The triggering module simultaneously triggers the controller and the coordinate position processing module.Type: GrantFiled: December 23, 2015Date of Patent: April 23, 2019Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chih-Yuan Hsu, Jui-Ming Chang, Shuo-Peng Liang, Tzuo-Liang Luo, Ta-Jen Peng, Jen-Ji Wang
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Patent number: 10146212Abstract: 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.Type: GrantFiled: December 28, 2016Date of Patent: December 4, 2018Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chia-Pei Wang, Chien-Chih Liao, Hsiao-Chen Ho, Jen-Ji Wang
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Publication number: 20180136636Abstract: 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.Type: ApplicationFiled: December 28, 2016Publication date: May 17, 2018Inventors: Chia-Pei WANG, Chien-Chih LIAO, Hsiao-Chen HO, Jen-Ji WANG
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Publication number: 20180128345Abstract: 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.Type: ApplicationFiled: December 20, 2016Publication date: May 10, 2018Inventors: Chen-Yu Kai, Jen-Ji WANG, Jung-Che Lee, Yi-Hsuan Chen, Chung-Yu Tai
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Patent number: 9833868Abstract: 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.Type: GrantFiled: December 16, 2015Date of Patent: December 5, 2017Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Tsung-Ling Hwang, Chin-Te Lin, Shuo-Peng Liang, Ta-Jen Peng, Jen-Ji Wang, Tzuo-Liang Luo
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Patent number: 9776329Abstract: A support device includes a supporting main body, a first angle rotation unit, a second angle rotation unit, a height adjustment structure, an absorbing unit and a driver motor unit. The absorbing unit is pivotally connected to the first angle rotation unit. The driver motor unit includes a first driving element, a second driving element and a third driving element. The first driving element drives the first angle rotation unit to adjust a rotation angle of the absorbing unit. The second driving element drives the second angle rotation unit for enabling the supporting main body to rotate around an axial thereof. The third driving element drives the height adjustment structure for enabling the supporting main body to move along the axial thereof. In addition, an support unit system and a support unit control system are also provided.Type: GrantFiled: December 22, 2015Date of Patent: October 3, 2017Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chen-Yu Kai, Jen-Ji Wang, Tzuo-Liang Luo, Wan-Ling Chen
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Publication number: 20170123402Abstract: An apparatus and method for transforming NC programs are provided, and the apparatus is electrically connected to a controller configured to, according to a NC program, command a machine to drive a cutting tool to cut a workpiece. The apparatus includes a triggering module, a coordinate position processing module, and a storage module. The triggering module is electrically connected to the controller. The coordinate position processing module is electrically connected to the controller and the triggering module. The storage module is electrically connected to the coordinate position processing module. The triggering module triggers the controller to execute the NC program in a single block mode. The coordinate position processing module is triggered by the triggering module to acquire at least one coordinate position from the controller. The storage module stores the at least one coordinate position. The triggering module simultaneously triggers the controller and the coordinate position processing module.Type: ApplicationFiled: December 23, 2015Publication date: May 4, 2017Inventors: Chih-Yuan Hsu, Jui-Ming Chang, Shuo-Peng Liang, Tzuo-Liang Luo, Ta-Jen Peng, Jen-Ji Wang
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Publication number: 20170100810Abstract: 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.Type: ApplicationFiled: December 16, 2015Publication date: April 13, 2017Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Tsung-Ling HWANG, Chin-Te LIN, Shuo-Peng LIANG, Ta-Jen PENG, Jen-Ji WANG, Tzuo-Liang LUO
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Publication number: 20170100839Abstract: The present disclosure provides a support device. The support device includes a supporting main body, a first angle rotation unit, a second angle rotation unit, a height adjustment unit, an absorbing unit and a driver motor unit. The absorbing unit is pivotally connected to the first angle rotation unit. The driver motor unit includes a first driving element, a second driving element and a third driving element. The first driving element drives the first angle rotation unit to adjust a rotation angle of the absorbing unit. The second driving element drives the second angle rotation unit for enabling the supporting main body to rotate around an axial thereof. The third driving element drives the height adjustment unit for enabling the supporting main body to move along the axial thereof. In addition, an support unit system and a support unit control system are also provided.Type: ApplicationFiled: December 22, 2015Publication date: April 13, 2017Inventors: Chen-Yu Kai, Jen-Ji Wang, Tzuo-Liang Luo, Wan-Ling Chen
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Patent number: 8397594Abstract: A feed drive mechanism and a connecting assembly thereof are described. The connecting assembly includes a main body and an outer sleeve. The main body has a connecting plate and an inner sleeve connected to a side surface of the connecting plate. Two opposite side surfaces of the connecting plate are respectively fixed on a screw nut seat and a lead screw nut of the feed drive mechanism, and a channel surrounds an outer side surface of the inner sleeve. The outer sleeve is sleeved on the outer side surface of the inner sleeve, enables the channel to be formed into a sealed space, and has an inlet and an outlet respectively communicating with the channel, thereby injecting a cooling medium into the channel.Type: GrantFiled: December 2, 2009Date of Patent: March 19, 2013Assignee: Industrial Technology Research InstituteInventors: Feng-Ming Ou, Jen-Ji Wang, Shih-Chang Chen, Chien-Chih Chiu, Yi-Huang Liou
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Publication number: 20120134762Abstract: A moving beam type machine tool is disclosed, having a dynamic phase balancing weight set and a spindle saddle. The spindle saddle has at least one X-axis location feedback device. When the spindle saddle along the X-axis traverse, the at least one X-axis location feedback device is able to locate the spindle saddle and inform a controlling unit. The controlling unit changes the output pressure of the dynamic phase balancing weight set depending on the location of the spindle saddle, so that a crossbeam is able to maintain in a balancing state. The moving beam type machine tool is able to increase accurate, sensitivity of pressure response, withstanding weight and balancing state.Type: ApplicationFiled: March 10, 2011Publication date: May 31, 2012Applicant: Industrial Technology Research InstituteInventors: Jen-Ji Wang, En-Sheng Chang, Chih-Ming Chen
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Publication number: 20110048146Abstract: A feed drive mechanism and a connecting assembly thereof are described. The connecting assembly includes a main body and an outer sleeve. The main body has a connecting plate and an inner sleeve connected to a side surface of the connecting plate. Two opposite side surfaces of the connecting plate are respectively fixed on a screw nut seat and a lead screw nut of the feed drive mechanism, and a channel surrounds an outer side surface of the inner sleeve. The outer sleeve is sleeved on the outer side surface of the inner sleeve, enables the channel to be formed into a sealed space, and has an inlet and an outlet respectively communicating with the channel, thereby injecting a cooling medium into the channel.Type: ApplicationFiled: December 2, 2009Publication date: March 3, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Feng Ming Ou, Jen Ji Wang, Shih-Chang Chen, Chien Chih Chiu, Yi Huang Liou
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Patent number: 6644143Abstract: A grip gear-shifter for being used in actuating a derailleur of a bicycle is provided. The grip gear-shifter includes a return spring, a resilient steel plate having a polyhedron-formed controlling pawl, a guiding ring having a guiding notch for guiding a cable, a first module for lodging and positioning said controlling pawl when the bicycle are in the state of shifting gears, and a second module having a projection and a positioning unit for operating in coordination with the return spring and the resilient steel plate, thereby forming a relative motion of the resilient steel plate and the first module to correctly shift gears when the bicycle are in the state of shifting gears.Type: GrantFiled: May 3, 2001Date of Patent: November 11, 2003Assignee: National Science CouncilInventors: Chan-Hua Feng, Jen-Ji Wang, I-Chao Yan, Te-Sheng Tseng
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Patent number: 6564670Abstract: A bicycle speed control apparatus for controlling a gear transmission mechanism via a drive cable connected to a bicycle is disclosed. The bicycle speed control apparatus includes a first seat connected to a bicycle handlebar and a second seat having a shaft used to connect to the first seat. A cylindrical sleeve member is used to connect to the drive cable and provided with first teeth, second teeth and third teeth in parallel. A first shifting lever and a second shifting lever are provided to pivot on the shaft. A first pawl and a second pawl are provided to movably mount on the first shifting lever and the second shifting lever, respectively. A resilient member is used to position on the shaft so as to engage the third teeth and disengage the first pawl from the first teeth and disengage the second pawl from the second teeth.Type: GrantFiled: March 26, 2001Date of Patent: May 20, 2003Assignee: National Science CouncilInventors: Chan-Hua Feng, Jen-Ji Wang
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Publication number: 20020000136Abstract: A grip gear-shifter for being used in actuating a derailleur of a bicycle is provided. The grip gear-shifter includes a return spring, a resilient steel plate having a polyhedron-formed controlling pawl, a guiding ring having a guiding notch for guiding a cable, a first module for lodging and positioning said controlling pawl when the bicycle are in the state of shifting gears, and a second module having a projection and a positioning unit for operating in coordination with the return spring and the resilient steel plate, thereby forming a relative motion of the resilient steel plate and the first module to correctly shift gears when the bicycle are in the state of shifting gears.Type: ApplicationFiled: May 3, 2001Publication date: January 3, 2002Inventors: Chan-Hua Feng, Jen-Ji Wang, I-Chao Yan, Te-Sheng Tseng
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Publication number: 20010042421Abstract: A bicycle speed control apparatus is provided with a pair of shifting levers to easily control a gear transmission mechanism via a drive cable. The bicycle speed control apparatus comprises a first seat connected to a bicycle handlebar and a second seat having a shaft used to connect to the first seat. A cylindrical sleeve member is used to connect to the drive cable and provided with first teeth, second teeth and third teeth in parallel. A first shifting lever and a second shifting lever are provided to pivot on the shaft so as to respectively shift a front and rear speed shifter. A first pawl and a second pawl are provided to movably mount on the first shifting lever and the second shifting lever, respectively. A resilient member is used to position on the shaft so as to engage the third teeth and disengage the first pawl from the first teeth and disengage the second pawl from the second teeth.Type: ApplicationFiled: March 26, 2001Publication date: November 22, 2001Applicant: National Science CouncilInventors: Chan-Hua Feng, Jen-Ji Wang