WO2021241397A1 - ロボットシステム - Google Patents
ロボットシステム Download PDFInfo
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- WO2021241397A1 WO2021241397A1 PCT/JP2021/019191 JP2021019191W WO2021241397A1 WO 2021241397 A1 WO2021241397 A1 WO 2021241397A1 JP 2021019191 W JP2021019191 W JP 2021019191W WO 2021241397 A1 WO2021241397 A1 WO 2021241397A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1679—Program controls characterised by the tasks executed
- B25J9/1682—Dual arm manipulator; Coordination of several manipulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1656—Program controls characterised by programming, planning systems for manipulators
- B25J9/1669—Program 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—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1674—Program controls characterised by safety, monitoring, diagnostic
-
- 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
- G05B2219/39—Robotics, robotics to robotics hand
- G05B2219/39121—Two manipulators operate on same object
Definitions
- This disclosure relates to a robot system.
- a transfer method for transferring the same article using two robots is known (see, for example, Patent Document 1).
- This transfer method inputs article information and transfer destination information, sets a transfer route, keeps the distance between each other within a predetermined range, and downloads the operation speed calculated from the operation distance of each robot. Then, the operation is started in synchronization and the target point is reached at the same time.
- One aspect of the present disclosure is described by a plurality of robots, a control device for controlling each robot, a hand attached to the tip of the wrist of the robot and gripping the work detachably, and the hand of each robot.
- Each of the control devices is provided with a sensor for detecting that the work is gripped, and each of the control devices cooperates with each other in response to an operation command including a coordination command by exchanging signals by being connected to each other.
- This is a robot system that prohibits the operation of each robot by an operation command that does not include a coordination command while the sensor detects that the work is being gripped.
- FIG. 3 is a schematic diagram illustrating the operation of the other robot when one robot moves the work. It is a schematic diagram explaining the operation by the cooperative command in the robot system of FIG.
- FIG. 5 is a schematic diagram illustrating the operation of the other robot when one robot moves the work. It is a flowchart explaining the control of a robot by the robot system of FIG. It is a flowchart explaining the modification of the control of a robot by the robot system of FIG.
- the robot system 1 is a control device capable of independently controlling two 6-axis articulated robots 10 and 20 and each robot 10 and 20. It has 30 and 40.
- Each of the robots 10 and 20 is provided with hands 12 and 22 for detachably gripping the work W at the wrist tips 11 and 21. Further, the hands 12 and 22 are provided with sensors 13 and 23 for detecting that the work W is gripped by the hands 12 and 22.
- the method of hands 12 and 22 may be arbitrary.
- the work W may be gripped by two or more fingers, or the work W may be gripped by attracting the work W by magnetic force or pressure.
- the method of the hands 12 and 22 may be different or the same for each of the robots 10 and 20.
- the methods of sensors 13 and 23 may be arbitrary.
- a proximity sensor may be used to detect the work W when the work W is gripped by the hands 12 and 22, or it may be detected that the work W is gripped by a power change of the actuator provided on the hands 12 and 22. May be good.
- the methods of the sensors 13 and 23 may be different or the same for each of the robots 10 and 20.
- the two control devices 30 and 40 that control the two robots 10 and 20, respectively, are connected to each other and exchange signals.
- an operation command including a coordination command is given in the instruction operation panel connected to one control device (leading side) 30 or in the operation program executed by the leading side control device 30, the two control devices 30 and 40 Operates two robots 10 and 20 in cooperation with each other.
- the tracking side control device 40 uses the coordinate axis xyz fixed to the hand 12 of the leading side robot 10 controlled by the leading side control device 30 as a reference. Controls the robot 20 of. For example, as shown in FIG. 3, a case where an operation command for linearly operating the following robot 20 is given between two points P1 and P2 on the work W held by the hand 12 of the leading robot 10 is illustrated. ..
- the operation command includes a cooperative command
- the following robot 20 works on the work regardless of how the coordinate axis xyz fixed to the hand 12 of the leading robot 10 moves. It is controlled to move linearly between two points P1 and P2 on W.
- the operation command includes the cooperative command, and the teaching point in the following robot 20 grips the work W by the hand 22.
- the coordinate axis x1y1z1 fixed to the hand 12 of the leading robot 10 when viewed from the coordinate axis x1y1z1 fixed to the hand 12 of the leading robot 10, the coordinate axis x2y2z2 fixed to the hand 22 of the following robot 20 is always.
- the following robot 20 is controlled so as to be stationary.
- two robots 10 and 20 perform a single work W having a large weight that exceeds the payload of each robot 10 and 20 by the respective hands 12 and 22. It can be gripped and transported at the same time.
- each of the control devices 30 and 40 controls each of the robots 10 and 20 as shown in FIG. That is, when an operation command is input to the leading robot 10 (step S1), the detection signals provided by the sensors 13 and 23 of the two hands 12 and 22, respectively, are monitored. Then, it is determined by the two sensors 13 and 23 whether or not it is detected that the two hands 12 and 22 are holding the work W (step S2). When it is detected by the two sensors 13 and 23 that the two hands 12 and 22 are gripping the work W, it is determined whether or not the operation command includes the coordination command (step S3). ).
- step S4 When the operation command includes the cooperative command, the operation command is executed (step S4), and when the operation command does not include the cooperative command, the operation of the robot 10 is prohibited (step S5). .. Further, when it is detected in the process of step S3 that any one of the two hands 12 and 22 does not grip the work W, the operation command is executed (step S4).
- the operation command must include a coordinated command.
- the operation command from the teaching operation panel or the operation command on the program does not include the coordination command.
- the operation command is issued. If the coordination command is not included, the two control devices 30 and 40 stop the operation of the two robots 10 and 20. As a result, it is prevented that only one robot 10 operates or both robots 10 and 20 operate without coordination while the two hands 12 and 22 hold the same work W. Will be done.
- This has the advantage that the work W, the hands 12, 22 and the robots 10 and 20 themselves can be prevented from being damaged or the work W can be prevented from falling.
- the robots 10 and 20 follow the operation command even if the operation command does not include the coordination command. It is activated. That is, the robots 10 and 20 are operated according to the operation command not only when the cooperation command is not intentionally included but also when the cooperation command is not included due to a confirmation error or a setting error of the operator.
- the robots 10 and 20 are individually operated according to the operation command. This makes it possible to improve operability and workability when an operation command that does not include a cooperative command is intentionally given. In addition, there is no inconvenience such as damage or dropping even when an operation command that does not include a coordination command is given due to a confirmation error or setting error of the operator.
- the robots 10 and 20 do not include the cooperative command if the operation command does not include the cooperative command. It was decided to prohibit the operation.
- the two robots 10 if the two sensors 13 and 23 both detect that they are gripping the work W and include a coordination command, the two robots 10, The relative positions and postures A of the coordinate axes fixed to the hands 12 and 22 of 20 may be sequentially monitored (step S6).
- step S7 it is determined whether or not the relative positions and postures A of the two coordinate axes have changed by a predetermined threshold value or more (step S7), and when the relative positions and postures A have changed by the threshold value or more, the operations of the robots 10 and 20 are prohibited. It may be controlled (step S5).
- the operation command includes the cooperation command, and the following robot 20 grips the work W by the hand 22. There is only one teaching point in the state of being.
- the following robot so that the coordinate axes fixed to the hand 22 of the following robot 20 are always stationary when viewed from the coordinate axes fixed to the hand 12 of the leading robot 10. 20 is controlled.
- the operation command from the teaching operation panel or the operation command on the program includes a cooperative command, a situation may occur in which the teaching point is not only one point. ..
- the control devices 30 and 40 stop the operation of the robots 10 and 20.
- the control devices 30 and 40 stop the operation of the robots 10 and 20.
- only one robot 10 operates while the two hands 12 and 22 hold the same work W, or both robots 10 and 20 are in relative positions or postures of the two coordinate axes. It is prevented from changing A.
- This has the advantage that the work W, the hands 12, 22 and the robots 10 and 20 themselves can be prevented from being damaged or the work W can be prevented from falling.
- a notification device for notifying the effect may be provided. If the two sensors 13 and 23 both detect that the work W is being gripped, but the coordination command is not included, the relative position or attitude A of the two coordinate axes is to that effect. If it has changed, it may be notified to that effect.
- the robots 10 and 20 stop due to a confirmation error or a setting error of the operator, the cause is often unknown to the operator. Therefore, by notifying the operator to that effect, the robot 10 is notified. , 20 has the advantage of being able to more clearly inform the cause of the stoppage. As a method of notification, it may be displayed on a monitor or may be notified by voice.
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- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
Abstract
Description
この移載方法は、物品情報および移載先情報を入力し、移送経路を設定し、互いの間の距離を所定範囲内に保ち、かつ、各ロボットの動作距離から計算した動作速度をダウンロードして、同期をとって動作開始させ同時に目標点に到達させている。
本実施形態に係るロボットシステム1は、図1および図2に示されるように、2台の6軸多関節型のロボット10,20と、各ロボット10,20を独立して制御可能な制御装置30,40とを備えている。各ロボット10,20には、手首先端11,21に、ワークWを着脱可能に把持するハンド12,22が備えられている。また、ハンド12,22には、該ハンド12,22によりワークWが把持されたことを検出するセンサ13,23が設けられている。
例えば、図3に示されるように、先導側のロボット10のハンド12が把持するワークW上の2点P1,P2間において追従側のロボット20を直線動作させる動作指令がなされた場合を例示する。動作指令に協調指令が含まれる場合には、図4に示されるように、先導側のロボット10のハンド12に固定された座標軸xyzがどのように移動しても、追従側のロボット20はワークW上の2点P1,P2間において直線移動するよう制御される。
したがって、一方の制御装置30が、一方のロボット10のみにハンド12の姿勢を変更させる動作指令を行っても、その動作指令に協調指令が含まれている場合には、他方のロボット20も強調して動作するので、2つのハンド12,22の相対的な移動が防止される。
しかし、作業者の確認ミスあるいは設定ミスにより、教示操作盤からの動作指令あるいはプログラム上の動作指令に協調指令が含まれていない事態が起こり得る。
その結果、2つのハンド12,22が同一のワークWを把持した状態で、一方のロボット10のみが動作してしまうことあるいは両方のロボット10,20が協調せずに動作してしまうことが防止される。これにより、ワークW、ハンド12,22およびロボット10,20自体の破損あるいはワークWの落下等の発生を防止することができるという利点がある。
上述したように、2つのロボット10,20が協調して単一のワークWを搬送する場合には、動作指令に協調指令が含められるとともに、追従側のロボット20がハンド22によってワークWを把持している状態での教示点は1点のみとなる。
しかし、作業者の確認ミスあるいは設定ミスにより、教示操作盤からの動作指令あるいはプログラム上の動作指令に協調指令が含まれていても、教示点が1点のみとはなっていない事態が起こり得る。
その結果、2つのハンド12,22が同一のワークWを把持した状態で、一方のロボット10のみが動作してしまうことあるいは両方のロボット10,20が、2つの座標軸の相対的な位置または姿勢Aを変化させてしまうことが防止される。これにより、ワークW、ハンド12,22およびロボット10,20自体の破損あるいはワークWの落下等の発生を防止することができるという利点がある。
2つのセンサ13,23が両方ともワークWを把持していることを検出しているのに、協調指令が含まれていない場合にはその旨、2つの座標軸の相対的な位置または姿勢Aが変化した場合にはその旨を報知すればよい。
報知の方法としては、モニタに表示してもよいし、音声により報知してもよい。
10,20 ロボット
11,21 手首先端
12,22 ハンド
13,23 センサ
30,40 制御装置
W ワーク
Claims (3)
- 複数のロボットと、
各該ロボットをそれぞれ制御する制御装置と、
前記ロボットの手首先端に取り付けられ、ワークを着脱可能に把持するハンドと、
各前記ロボットの前記ハンドにより前記ワークが把持されていることをそれぞれ検出するセンサとを備え、
各前記制御装置は、相互に接続されて信号をやり取りすることにより、協調指令を含む動作指令に応じて、各前記ロボットを協調して動作させる一方、前記センサにより前記ワークが把持されていることがそれぞれ検出されている状態で、協調指令を含まない動作指令による各前記ロボットの作動を禁止するロボットシステム。 - 各前記制御装置は、前記センサにより前記ワークが把持されていることがそれぞれ検出され、かつ、協調指令を含む動作指令がなされた場合に、一方の前記ロボットの前記ハンドに固定された一方の座標軸に対する他方の前記ロボットの前記ハンドに固定された他方の座標軸の相対的な位置および姿勢を逐次監視し、2つの前記座標軸の相対的な位置および姿勢が所定の閾値以上に変化したときに、各前記ロボットの作動を禁止する請求項1に記載のロボットシステム。
- 前記制御装置が各前記ロボットの作動を禁止したときに、その旨を報知する報知装置を備える請求項1または請求項2に記載のロボットシステム。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202180037031.2A CN115697654A (zh) | 2020-05-25 | 2021-05-20 | 机器人系统 |
| DE112021001595.8T DE112021001595T5 (de) | 2020-05-25 | 2021-05-20 | Robotersystem |
| JP2022526954A JP7436659B2 (ja) | 2020-05-25 | 2021-05-20 | ロボットシステム |
| US17/921,703 US12269173B2 (en) | 2020-05-25 | 2021-05-20 | Robot system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-090261 | 2020-05-25 | ||
| JP2020090261 | 2020-05-25 |
Publications (1)
| Publication Number | Publication Date |
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| WO2021241397A1 true WO2021241397A1 (ja) | 2021-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2021/019191 Ceased WO2021241397A1 (ja) | 2020-05-25 | 2021-05-20 | ロボットシステム |
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| Country | Link |
|---|---|
| US (1) | US12269173B2 (ja) |
| JP (1) | JP7436659B2 (ja) |
| CN (1) | CN115697654A (ja) |
| DE (1) | DE112021001595T5 (ja) |
| WO (1) | WO2021241397A1 (ja) |
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| KR102376965B1 (ko) * | 2020-11-26 | 2022-03-18 | 한국로봇융합연구원 | 거더 정밀 거치용 다중 유압 로봇 시스템 |
| TWI859620B (zh) * | 2021-11-01 | 2024-10-21 | 美商靈巧公司 | 控制多個機器人協同執行任務的機器人系統、用以控制機器人系統之方法、及電腦程式產品 |
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2021
- 2021-05-20 JP JP2022526954A patent/JP7436659B2/ja active Active
- 2021-05-20 DE DE112021001595.8T patent/DE112021001595T5/de active Pending
- 2021-05-20 WO PCT/JP2021/019191 patent/WO2021241397A1/ja not_active Ceased
- 2021-05-20 US US17/921,703 patent/US12269173B2/en active Active
- 2021-05-20 CN CN202180037031.2A patent/CN115697654A/zh active Pending
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| JP2016117142A (ja) * | 2014-12-23 | 2016-06-30 | 日立建機株式会社 | 作業機械 |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP7436659B2 (ja) | 2024-02-21 |
| DE112021001595T5 (de) | 2022-12-29 |
| US12269173B2 (en) | 2025-04-08 |
| JPWO2021241397A1 (ja) | 2021-12-02 |
| CN115697654A (zh) | 2023-02-03 |
| US20230166402A1 (en) | 2023-06-01 |
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