EP3448630A1 - Verfahren zur steuerung eines robotermanipulators zum eindrehen einer schraube - Google Patents

Verfahren zur steuerung eines robotermanipulators zum eindrehen einer schraube

Info

Publication number
EP3448630A1
EP3448630A1 EP17719244.0A EP17719244A EP3448630A1 EP 3448630 A1 EP3448630 A1 EP 3448630A1 EP 17719244 A EP17719244 A EP 17719244A EP 3448630 A1 EP3448630 A1 EP 3448630A1
Authority
EP
European Patent Office
Prior art keywords
tool
screw
receiving interface
axis
robot manipulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17719244.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Sami Haddadin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Franka Emika GmbH
Original Assignee
Franka Emika GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102016107841.7A external-priority patent/DE102016107841B4/de
Application filed by Franka Emika GmbH filed Critical Franka Emika GmbH
Publication of EP3448630A1 publication Critical patent/EP3448630A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/16—Programme controls
    • B25J9/1656—Programme controls characterised by programming, planning systems for manipulators
    • B25J9/1669—Programme controls characterised by programming, planning systems for manipulators characterised by special application, e.g. multi-arm co-operation, assembly, grasping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/16—Programme controls
    • B25J9/1679—Programme controls characterised by the tasks executed
    • B25J9/1687—Assembly, peg and hole, palletising, straight line, weaving pattern movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J15/00—Gripping heads and other end effectors
    • B25J15/0019—End effectors other than grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/16—Programme controls
    • B25J9/1628—Programme controls characterised by the control loop
    • B25J9/1633—Programme controls characterised by the control loop compliant, force, torque control, e.g. combined with position control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/16—Programme controls
    • B25J9/1656—Programme controls characterised by programming, planning systems for manipulators
    • B25J9/1664—Programme controls characterised by programming, planning systems for manipulators characterised by motion, path, trajectory planning
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45091—Screwing robot, tighten or loose bolt

Definitions

  • the invention relates to a method and a device for controlling a
  • the invention further relates to a robot with such a device, a computer system, a digital one
  • Storage medium a computer program product, as well as a computer program.
  • the object of the invention is, at least already, a method for controlling a mobile robot manipulator for screwing one into a thread
  • a first aspect of the invention relates to a method for controlling a movable actuator-driven robot manipulator for screwing in a screw, which is at least already inserted into a thread.
  • the robot manipulator advantageously has 4 to 7 degrees of freedom. It is advantageously assumed that the thread itself is spatially fixed, for example, as part of a larger spatially fixed object (eg. An engine block).
  • the screw is advantageously partially screwed into the thread, for example. One or more revolutions, so that the screw engages in the thread already.
  • the screw has a screw head with a
  • Robot manipulator has at its distal end a tool which is designed for engagement in the tool-receiving interface. Furthermore, the tool has a central tool axis about which the tool is rotatable on the robot manipulator.
  • the proposed method comprises the following steps.
  • a position of the tool receiving interface in the thread at least inserted screw specified.
  • the tool is positioned over the tool receiving interface and aligned
  • Tool holder interface until a connection between tool and
  • connection is advantageously such that it converges in the subsequent screwing of the screw (in the fourth step) in a positive connection or a positive connection at the end of the third
  • the screw is screwed in with a first direction of rotation of the tool until a predetermined limit value G1 of a torque / force acting on the tool is reached or exceeded.
  • the screwing in of the screw takes place such that the tool is rotated in the first direction of rotation and along the central screw axis in the direction of the thread.
  • the tool is reversed counter to the first direction of rotation by a predetermined angle in the range of [0.01 ° to 10 °]. This is advantageously done
  • the tool is removed from the tool receiving interface along the tool central axis.
  • the removal of the tool is advantageously carried out under force-controlled and / or impedance-controlled closed tilting movements of the central tool axis.
  • Tool central axis in the third and / or sixth step additionally superimposed lateral, also closed translational movements of the central tool axis executed. Further advantageously, the closed tilting movements in the third and / or sixth step take place in a tilting plane. Further advantageous, the
  • the proposed method allows in particular by the closed tilting movements or the closed superimposed lateral Translational movements of the central tool axis high reliability when screwing a screw into a thread. Furthermore, the proposed method allows the use of standard screwdrivers instead of expensive industrial screwdrivers.
  • a development of the proposed method is characterized in that in the case that a positive connection in the third or fourth step under predetermined conditions is not achieved, the second and the third step with automatically adjusted parameters for positioning the tool and / or alignment of the Tool central axis are executed again. Alternatively, the robot manipulator can be moved in this case in a predefined pose.
  • the basis of the adjusted parameters for positioning the tool and / or for aligning the tool center axis is advantageously a modified specification of the position of the tool receiving interface.
  • a pre-control force for the screwing-in motion is predefined during the turning in the fourth step, or a force / torque control in the helical central axis is used in order to maintain a predetermined setpoint force / torque or nominal force / torque profile ,
  • the tool central axis advantageously has a maximum lateral spacing in the range of [0.05 mm, 5 mm] from the central axis of the screw.
  • the maximum possible lateral distance is of course dependent on the dimensioning of the screw or the dimension of the tool receiving interface of the screw and is selected accordingly.
  • An advantageous development of the proposed method is characterized in that in the case that no positive connection between the tool and Tool receiving interface is reached, the tool along the
  • Tool center axis is moved away from the tool receiving interface a predetermined distance, the tool is rotated about the tool center axis a predetermined angle and the fourth step is performed again.
  • the tool receiving interface corresponds to one of the following
  • the invention further relates to a computer system with a
  • Data processing device wherein the data processing device is configured such that a method as described above, on the
  • the invention further relates to a digital storage medium with electronically readable control signals, wherein the control signals so with a programmable
  • the invention further relates to a computer program product with one on one machine-readable carrier stored program code to carry out the
  • Data processing device may be configured as any known from the prior art computer system.
  • Robotemanipulators for screwing one into a thread at least already
  • the screw being a screw head with a
  • Tool receiving interface the robot manipulator having at its distal end a tool adapted to engage in the tool receiving interface, the screw has a screw central axis, and the tool has a tool central axis about which the tool is rotatable on the robot manipulator, wherein a position of the tool receiving interface of in the thread at least inserted screw is known, wherein the device is designed and arranged such that the following steps are carried out:
  • Another aspect of the invention relates to a robot having a robot manipulator with a device as described above.
  • Fig. 1 is a schematic representation of the sequence of a proposed
  • Fig. 1 shows a schematic representation of the sequence of a proposed
  • Robot manipulator has at its distal end a tool that is designed to engage in the tool-receiving interface, the screw a
  • the method comprises the following steps.
  • a position of the tool receiving interface of the thread at least inserted in the thread is predetermined
  • a screw In a second step 102, the tool is positioned above the tool receiving interface and the tool central axis is aligned with a maximum deviation of 8 ° concentrically with the central bolt axis.
  • a third step 103 under force-controlled and / or impedance-controlled closed tilting movements of the tool center axis, the tool is moved along the tool center axis into the tool receiving interface until there is a positive connection between tool and tool receiving interface.
  • the screw In one
  • the screw is screwed in with a first direction of rotation of the tool until a predetermined limit value G1 of a torque / force acting on the tool is reached or exceeded.
  • a fifth step after the limit value G1 has been reached or exceeded, the tool is reversed counter to the first direction of rotation by a predetermined angle in the range of [0.01 ° to 10 °].
  • a sixth step 106 takes place under force-controlled and / or impedance-controlled closed tilting movements of
  • Tool central axis a removal of the tool from the
  • Tool receiving interface along the tool center axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
EP17719244.0A 2016-04-24 2017-04-24 Verfahren zur steuerung eines robotermanipulators zum eindrehen einer schraube Withdrawn EP3448630A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016004944 2016-04-24
DE102016107841.7A DE102016107841B4 (de) 2016-04-27 2016-04-27 Verfahren, Vorrichtung sowie Computersystem, Datenträger und Programm zur Steuerung eines Robotermanipulators zum Eindrehen einer Schraube
PCT/EP2017/059649 WO2017186636A1 (de) 2016-04-24 2017-04-24 Verfahren zur steuerung eines robotermanipulators zum eindrehen einer schraube

Publications (1)

Publication Number Publication Date
EP3448630A1 true EP3448630A1 (de) 2019-03-06

Family

ID=58632398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17719244.0A Withdrawn EP3448630A1 (de) 2016-04-24 2017-04-24 Verfahren zur steuerung eines robotermanipulators zum eindrehen einer schraube

Country Status (7)

Country Link
US (1) US11097423B2 (ko)
EP (1) EP3448630A1 (ko)
JP (1) JP7098530B2 (ko)
KR (1) KR20190042494A (ko)
CN (1) CN109070351B (ko)
SG (1) SG11201808687WA (ko)
WO (1) WO2017186636A1 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111421492B (zh) * 2020-04-27 2022-08-05 深圳市威富智能设备有限公司 电批及其分段控制方法、存储介质

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51122900A (en) 1975-04-17 1976-10-27 Hitachi Ltd Method of and device for fastening screw by robot
BG41865A1 (en) 1985-04-26 1987-09-15 Ivanov Method and device for scanning mounting of two- pieces entering one in the other
JPS63237827A (ja) 1987-03-24 1988-10-04 Sony Corp 自動ねじ締結装置
JPH0671527A (ja) * 1992-08-25 1994-03-15 Matsushita Electric Ind Co Ltd 産業用ねじ締めロボットおよびそのねじ締め方法
JP2724970B2 (ja) * 1994-08-23 1998-03-09 株式会社不二越 微小位置決め方法及び装置
JP4049989B2 (ja) * 2000-11-30 2008-02-20 トヨタ自動車株式会社 ネジ部材用締付ソケットの摩耗判定方法および摩耗判定装置
JP3961408B2 (ja) 2002-11-21 2007-08-22 ファナック株式会社 組立て方法及び装置
DE10354079B4 (de) * 2003-11-19 2006-07-06 Daimlerchrysler Ag Verfahren zum automatisierten Festziehen einer Verschraubung an einem Bauteil und geeignetes Industrierobotersystem
JP4271249B2 (ja) 2007-06-14 2009-06-03 ファナック株式会社 嵌合装置
JP5895346B2 (ja) * 2011-02-04 2016-03-30 セイコーエプソン株式会社 ロボット、ロボット制御装置、ロボット制御方法、およびロボット制御プログラム
JP5733122B2 (ja) * 2011-09-12 2015-06-10 株式会社デンソーウェーブ 螺子締め装置および螺子浮き判定方法
DE102012010662A1 (de) 2012-05-31 2012-12-13 Daimler Ag Verfahren zum Herstellen einer Schraubverbindung
JP5717811B2 (ja) * 2013-08-16 2015-05-13 ファナック株式会社 ネジ締付装置を含むロボットシステム

Also Published As

Publication number Publication date
KR20190042494A (ko) 2019-04-24
CN109070351B (zh) 2022-03-15
CN109070351A (zh) 2018-12-21
US11097423B2 (en) 2021-08-24
SG11201808687WA (en) 2018-11-29
US20190143519A1 (en) 2019-05-16
JP2019516566A (ja) 2019-06-20
JP7098530B2 (ja) 2022-07-11
WO2017186636A1 (de) 2017-11-02

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