Robot End Effectors Patents (Class 483/901)
  • Patent number: 6256868
    Abstract: An assembly process apparatus includes an assembly robot for assembling parts to a workpiece which is a main body, a part supply apparatus for supplying parts to the workpiece, a work pallet for supplying workpieces to an assembly station of the assembly robot, and a tool pallet for supplying assembly process modules interchangeable with respect to the assembly robot. The part supply apparatus is made up of a plurality of part supply modules interchangeable with respect to the assembly robot. With the assembly process apparatus as one unit, it is constructed to assemble parts one unit only or with a plurality of units combined. Accordingly, an assembly process apparatus achieves excellent productivity with which it is possible to expand or cut line equipments easily according to production volume, and it is possible to achieve utilization of surplus assembly robots.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: July 10, 2001
    Assignee: Denso Corporation
    Inventors: Katsuhiko Sugito, Masakazu Watanabe, Kazunori Nakamura
  • Patent number: 6142722
    Abstract: A substrate handling system is provided with a robot having the dual function of a removing and replacing substrate-containing pod doors and load lock chamber doors, and of transporting the substrates between the pods and various processing stations. The robot is equipped with an end effector having sockets into which interchangeable tools for implementing the various functions are removably mounted. The tools are retrieved from respective parking locations disposed within the system micro environment, and automatic interchangeability of the tools is facilitated by a novel socket mechanism which engages and disengages the tools to the robot arm without introducing contaminants into the micro environment.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: November 7, 2000
    Assignee: Genmark Automation, Inc.
    Inventors: Genco Genov, deceased, Roumen G. Botev, Alexander D. Todorov
  • Patent number: 6010441
    Abstract: A device to assemble cutter assemblies of cutters and spacers for a slitter for slitting coils of steel, aluminum, plastic or other material. The storage region of cutters and spacers uses the head room above the floor-area and is served by a robot that is able to simultaneously carry several tool units. The storage region contains storage units which project substantially vertically from the floor. The storage units include substantially horizontal projections for storage of the cutters and spacers.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: January 4, 2000
    Assignee: Transman AB
    Inventor: Bjorn .ANG.gren
  • Patent number: 5993365
    Abstract: A tool attachment and release system for robotic arms which using a magnet for supplying the attractive force to hold the tool to the robotic arm while allowing separation of tools from the robotic arm without manual intervention. A series of tools are held at predetermined locations in a tool rack allowing the robot to automatically deposit therein or acquire therefrom a particular tool. Permanent magnets are mounted between steel inserts in the tool attachment block. The steel insert are used to direct and concentrate magnetic flux to the tool attachment surface and also to each of two shunt bar contact surfaces. During the attach and disconnect operations, magnetic flux shunt bars are placed in close proximity to the two shunt bar contact surfaces to thereby provide an alternative path for the magnetic flux. This greatly reduces but does not eliminate the attractive force between the tool adapter plate and the attachment block.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: November 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph E. Stagnitto, Camiel J. Raes, James A. White
  • Patent number: 5974643
    Abstract: An industrial robot has a mounting bracket and a servo motor secured to the mounting bracket for rotation relative thereto about a first axis offset from the vertical by 60.degree.. A sensor plate is mounted on one end of the motor, a position sensor is mounted on the bracket and interacts with the sensor plate to sense the rotational home and overtravel positions of the motor. A tool changer is coaxially mounted on the other end of the motor and has means for mounting a turret for coaxial rotation by the motor. A turret having a plurality of circumferentially-spaced tools is mounted on the tool changer for operation on a second axis offset 60.degree. from the first axis, such that each tool is rotatable about the first axis to a vertical working position.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: November 2, 1999
    Assignee: General Motors Corporation
    Inventors: Timonthy Charles Hays, Thomas Lewis Richter, Dale Peter Holod, Jerome Frank Kamyszek
  • Patent number: 5971903
    Abstract: A system is disclosed enabling the automated exchange of touch probes (34,38) on an articulating probe head 40. The touch probes are mounted to adaptors 32, and are housed in storage ports 20 of a magazine. An adaptor 32 is repeatably located upon the retaining module by the mutual engagement of kinematic support elements 50,52 on the probe head 40 and adaptor 32 respectively. The support elements 50,52 are urged into mutual engagement by a locking mechanism having a spigot 60 on the probe head 40 which engages a cam 62 on the adaptor 32; rotation of the cam 62 locks/unlocks the support elements into mutual engagement. During an exchange operation the cam 62 is rotated by a screwdriver 80 in the storage port. Rotation of the screwdriver 80 is caused by relative movement of the storage port and the support plate 14, which is part of the support structure of the magazine.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: October 26, 1999
    Assignee: Renishaw PLC
    Inventor: Peter Hajdukiewicz
  • Patent number: 5947880
    Abstract: A tool rack support system which includes leaf spring type flexures which allow the tool rack a measure of compliance in both the horizontal and vertical planes. The support system comprises preferably two flexure support assemblies with each assembly preferably including two cantilevered, horizontally oriented, planar flexures and two cantilevered, vertically oriented, substantially planar flexures which are ultimately supported from the distal end of the horizontally oriented, planar flexures. The vertically oriented, planar flexures give the support system a measure of compliance which allows the tool rack to be moved discretely in the horizontal plane as a result of a robotic arm acquiring or delivering a tool to the tool rack. The horizontally oriented, substantially planar flexures of the support system give the support assembly vertical compliancy to allow the tool rack to be moved discretely in the vertical direction as a result of a robotic arm acquiring or delivering a tool from the tool rack.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: September 7, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph E. Stagnitto, Camiel J. Raes, James A. White
  • Patent number: 5879277
    Abstract: The present invention relates to a versatile apparatus for securely storing and retrieving a variety of tools. A tool holding rack according to the present invention has a plurality of tool-holding clamping units. The tool-holding clamping units are mounted in a horizontal array, and a robot arm can access the units from below for retrieving and storing tools on the units. Consequently, the rack can be mounted above a work area, thereby increasing the working space available on the work area for manufacturing operations. In one embodiment of the present invention, each tool holding unit has a first jaw and a second jaw, with at least the second jaw being open at the bottom. The second jaw is movable relative to the first jaw. The tool-holding clamping units have a clamped mode in which the unit is adapted to clamp a tool in place on the rack, and an open mode in which the first jaw is spaced from the second jaw such that the unit is adapted to permit removal of a tool from the rack.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: March 9, 1999
    Assignee: Kawasaki Robotics (USA) Inc.
    Inventors: Mark Prentiss Dettman, Michael John Harris
  • Patent number: 5855540
    Abstract: A system for performing work in a hot cell includes a support arm having a first end and a second end and a movable arm having an end selectively engageable with the first end to form a rigid connection. Complementary coupling devices are disposed on the first end of the support arm and on the end of the movable arm and mate together when the movable arm is joined to the support arm.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: January 5, 1999
    Assignee: Par Systems, Inc.
    Inventors: Albert J. Sturm, Jr., Thomas E. Marrinan, Fred W. Hanson, Dean R. LaValle
  • Patent number: 5803886
    Abstract: A workpiece gripper has a housing part on which is arranged a gripper element actuated by external force for gripping workpieces. Also provided is a joining part, for attaching the workpiece gripper to a tool holder, that can be transferred by means of a tool changing device between a magazine position on a machine tool and a working position on a receptacle in a spindle. Provided on the housing part is a connecting element that, when a tool holder is present in the receptacle, is in engagement with a joining element, to deliver energy for actuation of the gripper element, in such a way that the housing part is held nonrotatably with respect to the spindle head. An adapter is provided which is rotatably mounted on the housing part and to which the gripper element can be attached.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: September 8, 1998
    Assignee: Chiron-Werke GmbH & Co. KG
    Inventor: Anton Schweizer
  • Patent number: 5791032
    Abstract: A robotic turret tool for use with an industrial robot is mountable onto the spindle of the robot and capable of having multiple tools mounted thereto. The turret tool includes a mounting bracket adapted to be affixed to the spindle of the industrial robot, the mounting bracket including a locking element support. A turret shaft affixed to said mounting bracket. A turret head is rotatably supported on the turret shaft with multiple tools attached to the turret head allowing the robot to select which tool to use through rotation of the turret head. A locking element is slidably mounted in the locking element support. The locking element including an upper electrical supply connector and an upper pneumatic supply conduit path. The locking element is movable from a locked position engaging said turret head to an unlocked position away from said turret head.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: August 11, 1998
    Assignee: Eastman Kodak Company
    Inventors: Timothy F. Spencer, Gerald N. Walter
  • Patent number: 5779609
    Abstract: An apparatus for transporting a plurality of fasteners in an automated changing system, i.e., in a robotic tool changing system, wherein the system includes a tooling adaptor assembly adapted to be coupled and decoupled to and from a robot adaptor assembly. The transport apparatus includes a first member which has a first passage formed therethrough and a second member which has a second passage formed therethrough. Both the first and second members are mutually adapted for alignment to one another when the adaptor assemblies are coupled. When the adaptor assemblies are coupled together, the first and second members form an interface fitting so that the plurality of fasteners, i.e., studs, may pass therethrough, and ultimately be transported to a tool, i.e., a stud welding gun.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: July 14, 1998
    Assignee: Applied Robotics, Inc.
    Inventors: W. Paul Cullen, Pamela B. Billings, Douglas N. Gallup
  • Patent number: 5735782
    Abstract: An installation in a slitter mill for mounting a tool set (5), composed of annular tool parts (3), on a set-up device (1) provided with bars (2). The tool parts (3) are stored in a plurality of magazines (4) in a tool storage. A gantry robot (9) is adapted to collect tool parts (3) from the magazines (4) by means of a gripper (7) and to temporarily store the tool parts (3) in an associated intermediate magazine (13). The robot (9) with the intermediate magazine (13) moves between the magazines (4) and collects the desired tool parts (3) by means of the gripper (7) for loading a tool set in the intermediate magazine. A transfer device (15) is adapted to lift and transfer to the bars (2) a tool set present in the intermediate magazine (13). (FIG. 2 ).
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: April 7, 1998
    Assignee: Asea Brown Boveri AB
    Inventor: Arne Berg
  • Patent number: 5624364
    Abstract: A tool change device for manipulators, which have a rotary connection for fluidic supply lines of the tool. The rotary connection comprises a fixed part and a rotary part, whose contact plane is directed at right angles to the power take-off axis of rotation of the manipulator. The rotary and fixed parts have ring channels, which are arranged in concentric circles around the power take-off axis of rotation and open into cross channels. The rotary and fixed parts are flatly in contact with one another and are held together in the housing of the manipulator-side coupling part along the power take-off axis of rotation in an adjustable tensioning connection.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: April 29, 1997
    Assignee: Kuka Schweissanlagen & Roboter GmbH
    Inventor: Ernst Zimmer
  • Patent number: 5514062
    Abstract: A manipulator with at least one arm on which a handling device is fixed by means of a coupling piece, characterized by the fact that sliding bolts, which can be operated from outside, are located in the coupling piece for releasing a locking mechanism between coupling piece and handling device.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: May 7, 1996
    Inventors: Erhard Stadele, deceased, by Berta Stadele, legal representative
  • Patent number: 5460536
    Abstract: A high power electrical interface unit for a robotic tool changing system has a housing, a high power electrical connector in the housing for attachment to a high power electrical cable, and a replaceable high power electrical contact removably attachable to the electrical connector. The electrical contact extends into an opening in the housing and may be replaced through the opening without other disassembly of the interface unit. The contact may be threadably attachable to the connector, and the interface unit may include a member for preventing the electrical connector from rotating when the contact is threaded to the connector. The contact may include a head portion having a spheroidal or spherical contact surface, and a side surface configured for ready engagement by a hand tool such as a socket wrench. The interface unit may be removably secured to either a robot or tooling adaptor, or the interface unit may be integral to the robot or tool adaptor.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: October 24, 1995
    Assignee: Applied Robotics, Inc.
    Inventor: W. Paul Cullen
  • Patent number: 5376062
    Abstract: A robotic manufacturing unit with automatic tool changer, including a stand defining a working space and accommodating a working surface, an output member adapted to controllably move in three-dimensional space supported above the stand, a tool-holding and changing member attached to the output member and adapted to clampingly retain shanks of carriers of tools, a tool tray adapted to accommodate a plurality of tools mounted on tool carriers and, in coordination with the tool holding and changing member, to move from a position of rest, in which the tray is located outside of the working space, to a position of tool pickup and return, in which the tray is substantially located within the working space. The tool-holding and changing member and the shanks fit into one another and have non-circular cross-sections uniquely and reproducibly defining, when the shanks are clampingly retained, the relative angular positions of the tool-holding and changing member and the shanks.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: December 27, 1994
    Inventor: Eliezer Zeichner
  • Patent number: 5372567
    Abstract: A segmented tool rack having a plurality of individual bays to retain tool heads for an automated selection by a robotic arm, the tool heads being positively locked in the tool rack and upon selection by a robotic arm, the tool head remains in locked position until locked-onto the robotic arm at which time it is unlocked from the tool rack avoiding the possibility of an accidental dropping of a tool head and further, the tool head remains locked in position on said rack in the event of a loss of power.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: December 13, 1994
    Assignee: Robotics and Automation Corporation
    Inventors: Glenn A. Whittington, Steven J. Austin
  • Patent number: 5318496
    Abstract: In order to insert a punch into a punch mounting hole formed in a turret by a robot hand, the present method includes the following steps: (a) grasping the punch above the upper turret by a robot hand, and horizontally moving the punch to a position above a mounting hole formed in the upper turret; (b) moving the punch downwardly by the robot hand; (c) detecting whether the lower end of the punch is in contact with the wall of the mounting hole (d) detecting the height of the lower end of the punch when the lower end of the punch comes in contact with the wall of the mounting hole; (e) comparing the detected height of the lower end with a predetermined height; and (f) further moving the punch downwardly if the detected height is smaller than the predetermined height. In the preferred embodiment, if the insertion in accordance with the previous steps fails, the punch is moved upwardly and the center of the mounting hole is re-calculated on the basis of the data by a three-point search method.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: June 7, 1994
    Assignee: Amada Engineering and Service Co., Inc.
    Inventor: Yutaka Takahashi
  • Patent number: 5302061
    Abstract: An NC machine surrounded by a housing provided with a door on a front surface of the housing so that a workpiece may be loaded into the housing and unloaded therefrom when the door is in an open condition. An articulated robot, for replacing the workpiece, is provided so as to be laterally movable along an opening and closing direction of the door. Such a laterally movable function of the articulated robot permits a hand of the robot to grip a desired one of the workpieces arranged in lateral and longitudinal directions on a stock table. The articulated robot is provided with a sensor for detecting a dog provided on the door and an air cylinder for connecting the robot to the door when the dog is detected by the sensor. Accordingly, after the robot is connected to the door by the air cylinder, the door can be opened and closed by the lateral movement of the articulated robot.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: April 12, 1994
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toyofumi Terawaki, Osamu Tanigawa
  • Patent number: 5281194
    Abstract: The tool or workpiece magazine has tool holders disposed on a circle, from which holders the tools or workpieces can be removed by means of a removing device disposed centrally relative to the circular arc. This removing device comprises a column which is turnable around the axis thereof and on which a carriage is axially and slidably mounted. The carriage in turn carries transversely extendable telescoping arms, at the free end of which there is disposed a gripper having gripping jaws. Slots in tool carriers attached horizontally on movable panels are used as tool or workpiece holders. The panels can be moved outward of the magazine for stocking purposes.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: January 25, 1994
    Assignee: Hirschmann GmbH
    Inventor: Manfred Schneider
  • Patent number: 5256128
    Abstract: Methods and apparatus for exchanging the end effectors of apparatus for handling objects, such as robotic manipulators are disclosed. A compliant tool depository is used in conjunction with a tool holder to perform the end effector exchange. The present invention utilizes the motive force provided by the end effector actuation to execute the sequence required for end effector exchange. A bi-stable latch is provided which minimizes the force required to latch and unlatch the end effectors, thereby providing an end effector exchange mechanism useful in small laboratory robots possessing small operating forces. The tool depository design also adds to the positional forgiveness of the apparatus, allowing the robotic arm and the depository to be aligned with a lesser degree of precision than might otherwise be required.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: October 26, 1993
    Assignee: Hewlett-Packard Company
    Inventor: Hans D. Neumann
  • Patent number: 5219318
    Abstract: A captured nut member is located within a tool interface assembly and being actuated by a spline screw member driven by a robot end effector. The nut member lowers and rises depending upon the directional rotation of the coupling assembly. The captured nut member further includes two winged segments which project outwardly in diametrically opposite directions so as to engage and disengage a clamping surface in the form of a chamfered notch respectively provided on the upper surface of a pair of parallel forwardly extending arm members of a bifurcated tool stowage holster which is adapted to hold and store a robotic tool including its end effector interface when not in use. A forward and backward motion of the robot end effector operates to insert and remove the tool from the holster.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: June 15, 1993
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics & Space Administration
    Inventor: John M. Vranish
  • Patent number: 5195227
    Abstract: A quick change mounting system for machine tools provides tool-carrying fixtures having a system-standard dimensional referencing system and fluidically controlled tooling to effect the desired machining operations. The tool-carrying fixtures are mounted to and dismounted from a system-standard tooling plate that carries fluidic supply conduits and mutually operative connectors that effect connection and disconnection of the fluidic system in response to the mounting or dismounting of the tool-carrying fixtures on its mounting plate. A change from one tool-carrying fixture to another can be accomplished by dismounting the former tool-carrying fixture from its mounting plate and mounting a replacement tool-carrying fixture.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: March 23, 1993
    Assignee: The J. L. Wickham Co., Inc.
    Inventor: John L. Wickham
  • Patent number: 5131706
    Abstract: The present invention is a straight line gripper tool and changer assembly, comprising a rotary actuator, a rotary mechanical sequencer, a tool changer, and a tool. The rotary actuator is attachable to a robot arm. The rotary mechanical sequencer is connected to and powered by the rotary actuator providing first and second concentric outputs. A tool changer is driven by the first output for capturing or releasing tools. The tool changer includes a plurality of tool changer clamps. The motion of each tool changer clamp is in a straight line relative to the sequencer. The tool is driven by the second output. The tool comprises at least two end effector clamps for engaging a workpiece. The tool is connected to the tool changer. The motion of each end effector clamp is maintained in a straight line relative to the tool and changer.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: July 21, 1992
    Assignee: Rockwell International Corporation
    Inventor: Walter T. Appleberry