Patents by Inventor Dalong Gao
Dalong Gao 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: 11931892Abstract: A robotic system includes a support structure, a motor mount assembly, first and second parallel chains, a serial translation assembly, a sensor and a control module. The motor mount assembly includes rotary motors, where the rotary motors include a first rotary motor and a second rotary motor. The first and second parallel chains are connected to the movable platform, the rotary motors and the motor mount assembly. The serial translation assembly is connected to the supporting structure and the motor mount assembly and includes a linear actuator and a third rotary motor. The sensor is connected to the movable platform and detects force applied by a human operator on the movable platform and generates a signal indicative of the force applied. The control module controls the rotary motors and the third rotary motor based on the signal to assist the human operator in moving the movable platform.Type: GrantFiled: December 17, 2021Date of Patent: March 19, 2024Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, Shanghai JiaoTong UniversityInventors: Qiao Sun, Xianbao Chen, Jing Sun, Feng Gao, Dalong Gao, Ningjian Huang
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Patent number: 11916338Abstract: An electrical connector assembly includes a pair of electrical connectors for electrically connecting to one another to close an electric circuit. The assembly further includes a connection indicator attached to one or more of the electrical connectors. The connection indicator generates a feedback, in response to the electrical connectors being one of connected to one another and disconnected from one another. The connection indicator is separate from the electric circuit, and the feedback is at least one of a radio frequency signal (RF signal), an electronic signal, a visible light, and an acoustic signal.Type: GrantFiled: July 23, 2021Date of Patent: February 27, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Xiang Zhao, Dalong Gao, Jinglin Li
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Publication number: 20240042704Abstract: A reconditioning device includes: a first shearing plate; a second shearing plate; and a housing. The housing includes: a first member configured to hold the first shearing plate and comprising an input for receiving a material; a second member connected to the first member to form an inner cavity, a portion of the inner cavity is located in a gap between the first shearing plate and the second shearing plate; and an output member connected to a pipeline of a production applicator and configured to output the material subsequent to shearing. The shaft extends through the second member, is connected to the second shearing plate, and is configured to be rotated to shear the material disposed in the gap between the first shearing plate and the second shearing plate.Type: ApplicationFiled: August 3, 2022Publication date: February 8, 2024Inventors: Dalong GAO, Ryan GERGELY, Prateek MISHRA, Paul E. CRITTENDEN
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Publication number: 20240009864Abstract: Robotic systems and methods are provided with an end effector having lockable compliance. A robotic system for manipulating a workpiece includes an arm having a pair of sections connected by a joint assembly, with a lock disposed in the joint assembly. A gripper is connected on the arm and is configured to alternately grip and release the workpiece. A controller operates the lock to alternately lock and unlock the joint assembly. The gripper holds the workpiece during a deformation of the workpiece, while the controller may unlock the lock to allow movement of the joint assembly to relieve forces on the arm arising during a deformation of the workpiece.Type: ApplicationFiled: July 5, 2022Publication date: January 11, 2024Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, Northwestern UniversityInventors: Joshua Lee Solomon, Hui-ping Wang, Lu Huang, Dalong Gao, Dohyun Leem
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Patent number: 11813743Abstract: A robotic system includes a support structure, a platform, a center serial chain, outer serial chains, motors, a sensor, and a control module. The center serial chain connects a center of the platform to the support structure and includes first joints connected to a linear sliding shaft. The outer serial chains are disposed radially outward of the center serial chain. Each of the outer serial chains includes second joints connecting a bar to the platform and the supporting structure. The motors are connected to the outer serial chains. The sensor is connected to the platform and detects at least one of force or torque applied by a human operator on the platform and generates a signal indicative thereof. The control module controls the motors based on the signal to assist the human operator in at least one of moving or rotating the platform.Type: GrantFiled: December 17, 2021Date of Patent: November 14, 2023Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, Shanghai JiaoTong UniversityInventors: Qiao Sun, Xianbao Chen, Jing Sun, Dalong Gao, Feng Gao, Ningjian Huang
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Patent number: 11660761Abstract: Robotic systems are provided for flexibility in assembly operations. A robotic system includes a suction module having a front side with a face shaped to match a mating component and a rear side with a coupling for a suction line. Openings extend through the face. The suction module defines internal passages connecting the coupling with the at least one opening through the face. An end-effector has a base plate, a mounting plate selectively moveable relative to the base plate, and a clamp. The suction module is selectively mounted to the mounting plate and releasably secured by the clamp. An actuator is mounted to selectively move the mounting plate and the suction module relative to the base plate.Type: GrantFiled: September 24, 2020Date of Patent: May 30, 2023Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, LLCInventors: Dalong Gao, Ningjian Huang, Yhu-tin Lin, Roberto Hirayama
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Publication number: 20230150118Abstract: A robotic system includes a support structure, a motor mount assembly, first and second parallel chains, a serial translation assembly, a sensor and a control module. The motor mount assembly includes rotary motors, where the rotary motors include a first rotary motor and a second rotary motor. The first and second parallel chains are connected to the movable platform, the rotary motors and the motor mount assembly. The serial translation assembly is connected to the supporting structure and the motor mount assembly and includes a linear actuator and a third rotary motor. The sensor is connected to the movable platform and detects force applied by a human operator on the movable platform and generates a signal indicative of the force applied. The control module controls the rotary motors and the third rotary motor based on the signal to assist the human operator in moving the movable platform.Type: ApplicationFiled: December 17, 2021Publication date: May 18, 2023Applicant: Shanghai JiaoTong UniversityInventors: Qiao SUN, Xianbao CHEN, Jing SUN, Feng GAO, Dalong GAO, Ningjian HUANG
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Publication number: 20230150117Abstract: A robotic system includes a support structure, a platform, a center serial chain, outer serial chains, motors, a sensor, and a control module. The center serial chain connects a center of the platform to the support structure and includes first joints connected to a linear sliding shaft. The outer serial chains are disposed radially outward of the center serial chain. Each of the outer serial chains includes second joints connecting a bar to the platform and the supporting structure. The motors are connected to the outer serial chains. The sensor is connected to the platform and detects at least one of force or torque applied by a human operator on the platform and generates a signal indicative thereof. The control module controls the motors based on the signal to assist the human operator in at least one of moving or rotating the platform.Type: ApplicationFiled: December 17, 2021Publication date: May 18, 2023Applicant: Shanghai Jiao Tong UniversityInventors: Qiao SUN, Xianbao CHEN, Jing SUN, Dalong GAO, Feng GAO, Ningjian HUANG
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Publication number: 20230092863Abstract: A calibration system includes a docking stand fixed within a three-dimensional coordinate system and an end effector supported by the docking stand. The end effector includes a frame received by the docking stand and an adjustable member movable along the frame. The adjustable member includes a clamp and a reference surface. The calibration system includes a computational system including at least one processor and at least one non-transitory computer-readable medium including instructions. The calibration system includes a measurement instrument in electronic communication with the computational system. The measurement instrument is movable and is arranged to interact with the reference surface and transmit a signal to the processor.Type: ApplicationFiled: September 17, 2021Publication date: March 23, 2023Inventor: Dalong Gao
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Publication number: 20230025116Abstract: An electrical connector assembly includes a pair of electrical connectors for electrically connecting to one another to close an electric circuit. The assembly further includes a connection indicator attached to one or more of the electrical connectors. The connection indicator generates a feedback, in response to the electrical connectors being one of connected to one another and disconnected from one another. The connection indicator is separate from the electric circuit, and the feedback is at least one of a radio frequency signal (RF signal), an electronic signal, a visible light, and an acoustic signal.Type: ApplicationFiled: July 23, 2021Publication date: January 26, 2023Inventors: Xiang Zhao, Dalong Gao, Jinglin Li
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Publication number: 20220088799Abstract: Robotic systems are provided for flexibility in assembly operations. A robotic system includes a suction module having a front side with a face shaped to match a mating component and a rear side with a coupling for a suction line. Openings extend through the face. The suction module defines internal passages connecting the coupling with the at least one opening through the face. An end-effector has a base plate, a mounting plate selectively moveable relative to the base plate, and a clamp. The suction module is selectively mounted to the mounting plate and releasably secured by the clamp. An actuator is mounted to selectively move the mounting plate and the suction module relative to the base plate.Type: ApplicationFiled: September 24, 2020Publication date: March 24, 2022Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dalong Gao, Ningjian Huang, Yhu-tin Lin, Roberto Hirayama
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Patent number: 11059534Abstract: A method of assembling a manufactured item without a guide rail and an assembly system are provided. The method includes disposing a base item on an unmanned independent vehicle system, moving the unmanned independent vehicle system to an assembly station, and attaching an additional item to the base item. The assembly system includes a number of unmanned independent vehicle systems, each unmanned independent vehicle system having at least one wheel. Each unmanned independent vehicle system is configured to be loaded with a base item. A number of assembly stations are provided, each being configured to complete at least one assembly operation. Each unmanned independent vehicle system is configured to independently move to multiple of the assembly stations to have a different assembly operation performed at each assembly station, resulting in additional items being attached to each base item to form each manufactured item.Type: GrantFiled: December 18, 2018Date of Patent: July 13, 2021Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dalong Gao, Ningjian Huang, Richard C. Janis
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Patent number: 10780537Abstract: An adaptable assembly line work-piece processor for use at a work station includes, but is not limited to, a work-piece supporter. The adaptable assembly line work-piece processor further includes, but is not limited to, a reconfigurable interface assembly attached to the work-piece supporter. The adaptable assembly line work-piece processor still further includes, but is not limited to, a work-piece manipulator attached to the reconfigurable interface assembly. The work-piece supporter, the reconfigurable interface assembly, and the work-piece manipulator are configured to cooperate to sequentially support and manipulate a plurality of differently configured work-pieces.Type: GrantFiled: October 11, 2017Date of Patent: September 22, 2020Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dalong Gao, Lance T. Ransom, Richard C. Janis, Rodney L. Smith
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Patent number: 10688595Abstract: A method of laser welding a workpiece stack-up (10) that includes at least two overlapping steel workpieces (12, 14) comprises directing a laser beam (40) at a top surface (26) of the workpiece stack-up to form a keyhole (56) surrounded by a molten steel weld pool (58). The laser beam is conveyed along a predefined weld pattern that includes one or more nonlinear inner weld paths (66) and an enclosed outer peripheral weld path (68) surrounding the one or more nonlinear inner weld paths. During conveyance of the laser beam along the one or more nonlinear inner weld paths, the keyhole fully penetrates through the workpiece stack-up from the top surface of the stack-up to the bottom surface (28) of the stack-up. The method produces weld joints between the steel workpieces that do not have an intentionally imposed gap formed between their faying surfaces.Type: GrantFiled: June 2, 2015Date of Patent: June 23, 2020Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: David S. Yang, Justin Allen Wolsker, Jing Zhang, Wu Tao, Dalong Gao
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Publication number: 20200189675Abstract: A method of assembling a manufactured item without a guide rail and an assembly system are provided. The method includes disposing a base item on an unmanned independent vehicle system, moving the unmanned independent vehicle system to an assembly station, and attaching an additional item to the base item. The assembly system includes a number of unmanned independent vehicle systems, each unmanned independent vehicle system having at least one wheel. Each unmanned independent vehicle system is configured to be loaded with a base item. A number of assembly stations are provided, each being configured to complete at least one assembly operation. Each unmanned independent vehicle system is configured to independently move to multiple of the assembly stations to have a different assembly operation performed at each assembly station, resulting in additional items being attached to each base item to form each manufactured item.Type: ApplicationFiled: December 18, 2018Publication date: June 18, 2020Inventors: Dalong Gao, Ningjian Huang, Richard C. Janis
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Patent number: 10682684Abstract: A method for joining a plurality of workpieces includes providing a rotating drive tool. A fastener is secured to the drive tool. The drive tool is then rotatably driven such that a distal end of the fastener rotates against a surface of the plurality of workpieces. A heated material zone is then generated on the plurality of workpieces as caused by friction from the rotation of the fastener against the surface of the plurality of workpieces. The distal end of the fastener is rotatably and axially driven through the heated material zone. Finally, the drive tool is removed from the fastener, such that when the heated material zone cools, a portion of the heated material zone is fused to the fastener.Type: GrantFiled: December 7, 2016Date of Patent: June 16, 2020Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Guoxian Xiao, Dalong Gao, Jorge F. Arinez, Ningjian Huang, Pei-chung Wang
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Patent number: 10315281Abstract: A reconfigurable interface assembly includes, but is not limited to, a first sub-assembly that is adapted for attachment to a work-piece supporter. The first sub-assembly includes a first brake. The reconfigurable interface assembly further includes a second sub-assembly attached to the first sub-assembly. The second sub-assembly is adapted for attachment to a work-piece manipulator. The second sub-assembly includes a second brake. The first sub-assembly is configured to move the second sub-assembly in a first direction with respect to the first sub-assembly and the first brake is configured to inhibit movement of the second sub-assembly in the first direction with respect to the first sub-assembly. The second sub-assembly is configured to move the first sub-assembly in a second direction with respect to the second sub-assembly and the second brake is configured to inhibit movement of the first sub-assembly in the second direction with respect to the first sub-assembly.Type: GrantFiled: September 30, 2016Date of Patent: June 11, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dalong Gao, Lance T. Ransom, Richard C. Janis, Rodney L. Smith, Yhu-Tin Lin
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Publication number: 20180315682Abstract: The present disclosure relates to a bonding system comprising a first substrate, a second substrate, an adhesive, in contact with a first contact surface and a second contact surface, and a plurality of solder elements positioned in the adhesive. Each solder element has a plurality of indentations located on the perimeter of the solder element and the plurality of indentations receiving a portion of the adhesive. Also, the present disclosure relates to a bonding method to produce a solder-reinforced adhesive bond joining a first substrate and a second substrate.Type: ApplicationFiled: October 21, 2015Publication date: November 1, 2018Inventors: Xin Yang, Dalong Gao, Blair E. Carlson, Yongbing Li
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Publication number: 20180161850Abstract: A joining machine includes a robotic arm having a distal end, a tool configured for driving a fastener into a workpiece, and a compensation device mounted between the distal end of the robotic arm and a first end of the tool. The compensation device is configured to move the tool in at least one of a linear and a rotational direction to compensate for deflection of the robotic arm when the fastener is driven into the workpiece.Type: ApplicationFiled: December 8, 2016Publication date: June 14, 2018Inventor: Dalong GAO
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Publication number: 20180154426Abstract: A method for joining a plurality of workpieces includes providing a rotating drive tool. A fastener is secured to the drive tool. The drive tool is then rotatably driven such that a distal end of the fastener rotates against a surface of the plurality of workpieces. A heated material zone is then generated on the plurality of workpieces as caused by friction from the rotation of the fastener against the surface of the plurality of workpieces. The distal end of the fastener is rotatably and axially driven through the heated material zone. Finally, the drive tool is removed from the fastener, such that when the heated material zone cools, a portion of the heated material zone is fused to the fastener.Type: ApplicationFiled: December 7, 2016Publication date: June 7, 2018Inventors: Guoxian XIAO, Dalong GAO, Jorge F. ARINEZ, Ningjian HUANG, Pei-chung WANG