WO2022014520A1 - ロボットハンド及びコネクタ付きハーネスの把持方法 - Google Patents
ロボットハンド及びコネクタ付きハーネスの把持方法 Download PDFInfo
- Publication number
- WO2022014520A1 WO2022014520A1 PCT/JP2021/026076 JP2021026076W WO2022014520A1 WO 2022014520 A1 WO2022014520 A1 WO 2022014520A1 JP 2021026076 W JP2021026076 W JP 2021026076W WO 2022014520 A1 WO2022014520 A1 WO 2022014520A1
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- WIPO (PCT)
- Prior art keywords
- connector
- harness
- pair
- chuck mechanism
- wire chuck
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- 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
- B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
- B25J19/02—Sensing devices
- B25J19/021—Optical sensing devices
- B25J19/023—Optical sensing devices including video camera means
-
- 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
- B25J15/02—Gripping heads and other end effectors servo-actuated
- B25J15/0253—Gripping heads and other end effectors servo-actuated comprising parallel grippers
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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
- B25J9/1694—Program controls characterised by use of sensors other than normal servo-feedback from position, speed or acceleration sensors, perception control, multi-sensor controlled systems, sensor fusion
- B25J9/1697—Vision controlled systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
Definitions
- the present invention relates to a method for gripping a robot hand and a harness with a connector.
- Automation of various assembly processes is progressing by utilizing robots.
- One of the difficult steps in these steps is to insert the connector into the connector port.
- the robot hand In order for the robot hand to grip the harness or connector and insert it correctly into the connector port, the robot hand must grip the connector in the default position and in the default orientation.
- a complicated jig is required to supply the connector and harness to the robot hand in the specified orientation and to the specified position.
- the connector and harness supplied in a relatively free state are photographed by a camera, and the approach direction, orientation, and posture of the hand to the connector are controlled so as to grip the connector in a predetermined orientation and position based on the camera image. It is also possible. However, it may be difficult due to the posture of the robot arm and the structure of the hand.
- Patent Document 1 discloses a robot hand that directly holds a coupler (connector) with a pair of chucks.
- the hand becomes wider than the connector in the state where the connector is gripped. Therefore, when the connector port is installed in a narrow place, the hand may interfere with the surroundings and the connector may not be able to be inserted into the connector port.
- the robot hand for gripping a harness is supported by a hand base and a hand base so as to be movable back and forth, a push mechanism for pressing a connector from above, and a hand base which is vertically movable and supported by a hand base. It is provided on a pair of fingers of the front-stage wire chuck mechanism for holding the harness, the rear-stage wire chuck mechanism for holding the harness by being freely supported by the hand base, and the front-stage wire chuck mechanism. It is provided with a pair of pressing portions that are pressed against the connector from the rear.
- the connector can be gripped in the default position and in the default orientation, and the connector can be inserted into the connector port installed in a narrow space.
- FIG. 1 is a side view showing a robot equipped with a robot hand according to the present embodiment.
- FIG. 2 is a perspective view showing an example of the robot hand of FIG.
- FIG. 3 is a side view in which a part of the robot hand of FIG. 2 is omitted.
- FIG. 4 is a plan view in which a part of the robot hand of FIG. 2 is omitted.
- FIG. 5 is a diagram showing a first stage of the gripping operation by the robot hand of FIG. 2.
- FIG. 6 is a diagram showing a second stage of the gripping operation by the robot hand of FIG.
- FIG. 7 is a diagram showing a third stage of the gripping operation by the robot hand of FIG. 2.
- FIG. 8 is a diagram showing a fourth stage of the gripping operation by the robot hand of FIG.
- FIG. 9 is a diagram showing a fifth stage of the gripping operation by the robot hand of FIG. 2.
- FIG. 10 is a diagram showing another example of the pressing portion of the robot hand according to the present embodiment.
- FIG. 11 is a diagram showing another example of the first finger of the robot hand according to the present embodiment.
- FIG. 12 is a side view showing another example of the mounting position of the camera of the robot hand according to the present embodiment.
- the robot hand according to this embodiment is used for gripping a harness to which a connector is connected to the tip. Typically, it is attached to the arm tip of various types of robot arm mechanisms such as vertical articulated type, horizontal articulated type, and polar coordinate type.
- various types of robot arm mechanisms such as vertical articulated type, horizontal articulated type, and polar coordinate type.
- the robot hand 1 is attached to the wrist portion at the tip of the robot arm mechanism 3 and used.
- the robot arm mechanism 3 and the robot hand 1 are controlled by the control device 5.
- the control device 5 includes a storage device such as an HDD in which a gripping program for controlling a gripping operation by the robot hand 1 is stored, an arithmetic processing unit such as a CPU that executes a program stored in the storage device, and the like.
- the gripping program is executed by the arithmetic processing unit, the robot hand 1 operates together with the robot arm mechanism 3 according to the gripping sequence defined by the hand control program, and can grip the harness with the connector.
- FIG. 2 is a perspective view of the front side of the robot hand 1.
- FIG. 3 is a side view of the robot hand 1.
- FIG. 4 is a plan view of the robot hand 1.
- the connector detection camera 61 and the overall detection camera 71 are omitted in order to clarify the main components of the robot hand 1.
- components other than these are omitted in order to clarify the positional relationship between the pad 21 of the push mechanism 20, the pair of first fingers 31 and 32 in the front stage, and the pair of second fingers 51 and 52 in the rear stage. Has been done.
- the robot hand 1 has a rectangular plate-shaped hand base 11.
- the longitudinal direction of the hand base 11 is used as the front-rear direction
- the lateral direction of the hand base 11 is used as the left-right direction
- the thickness direction of the hand base 11 is used as the vertical direction.
- the hand base 11 is provided with a connector detection camera 61 for taking a picture of the connector and an overall detection camera 71 for taking a bird's-eye view of the harness with a connector.
- the connector detection camera 61 is provided in front of the hand base 11 via the camera mount 63 so that the shooting direction faces downward.
- the whole detection camera 71 is provided on the side of the hand base 11 via the camera mount 73 so that the shooting direction faces downward.
- the hand base 11 is supported by a push mechanism 20 for pressing the connector mounted on the pedestal 7 from above, and two wire material chuck mechanisms 50 and 30 for holding the harness.
- the push mechanism 20 has a columnar push pin 23 and a pin elevating mechanism 25 that raises and lowers the push pin 23 in the vertical direction.
- a pad 21 made of elastic resin for contacting the connector is attached to the tip of the push pin 23.
- the push mechanism 20 is connected to the front portion of the hand base 11 via the first front-back movement mechanism 27.
- the push mechanism 20 may be fixed to the hand base 11 without going through the first front-back movement mechanism 27.
- a rectangular plate-shaped chuck base 13 is connected to the hand base 11 via a base elevating mechanism 15.
- the chuck base 13 is arranged below the hand base 11 in parallel with the hand base 11.
- Two wire material chuck mechanisms 30 and 50 are supported on the chuck base 13.
- the two wire material chuck mechanisms 30 and 50 are arranged at positions separated from each other in the front-rear direction.
- the two wire chuck mechanisms 30 and 50 may be connected to individual elevating mechanisms, respectively.
- the wire material chuck mechanism 30 in the previous stage is connected to the chuck base 13 via the second front-back movement mechanism 37.
- the wire material chuck mechanism 30 in the previous stage has a pair of first fingers 31 and 32 and a first opening / closing mechanism 35 for opening and closing the pair of first fingers 31 and 32 in the left-right direction.
- the pair of first fingers 31 and 32 has an L-shaped outer shape
- the first opening / closing mechanism 35 has an L-shaped outer shape, parallel to each other along the vertical and front-rear directions, and the tip thereof faces forward, respectively. It is attached.
- the pair of first fingers 31 and 32 are integrally formed with a pair of pressing portions 41 and 42 that are pressed against the connector from behind.
- the pair of pressing portions 41 and 42 have an L-shaped planar shape extending outward, and the entire pair of pressing portions 41 and 42 form a U-shaped or U-shaped planar shape. Is connected to the tips of the pair of first fingers 31 and 32, respectively.
- the wire chuck mechanism 50 in the subsequent stage has a pair of second fingers 51 and 52 and a second opening and closing mechanism 55 that opens and closes the pair of second fingers 51 and 52 in the left-right direction.
- the pair of second fingers 51, 52 has a rod-shaped outer shape and is attached to the second opening / closing mechanism 55 in parallel with each other in the vertical direction.
- the push mechanism 20, the front-stage wire chuck mechanism 30, and the rear-stage wire chuck mechanism 50 are arranged so that the opening / closing center positions of the second fingers 51 and 52 are arranged on the reference line LF of the robot hand 1 extending in the front-rear direction. It is positioned.
- the two wire chuck mechanisms 30 and 50 are lowered by the base elevating mechanism 15.
- the front portion of the harness C can be surrounded by the pair of first fingers 31 and 32 of the wire chuck mechanism 30 in the front stage, and the rear portion of the harness C can be surrounded by the pair of second fingers 51 of the wire chuck mechanism 50 in the rear stage. It can be surrounded by 52.
- the connector B is located on the reference line LF.
- the connector B is detected from the connector image taken by the connector detection camera 61, and the front-back position of the push mechanism 20 is adjusted by the first front-back movement mechanism 27.
- the push pin 23 is lowered by the pin elevating mechanism 25.
- the connector B is pressed against the pedestal 7 by the pad 21 (push pin 23).
- the lower surface of the connector B pressed against the pedestal 7 is parallel to the mounting surface of the pedestal 7.
- the second opening / closing mechanism 55 of the wire material chuck mechanism 50 in the subsequent stage is closed, and the harness C is narrowly held and held by the pair of second fingers 51 and 52.
- the wire chuck mechanism 30 in the front stage is moved forward by the second front-rear moving mechanism 37, and the rear end surface of the connector B is used. A pair of pressing portions 41 and 42 are pressed against the surface. Thereby, the position and orientation of the connector B with respect to the narrow holding position of the harness C by the pair of second fingers 51 and 52 can be fixed.
- the first opening / closing mechanism 35 of the wire material chuck mechanism 30 in the previous stage is closed, and the harness C is narrowed by the pair of first fingers 31 and 32.
- the robot hand 1 can grip the harness A with a connector by using the two wire material chuck mechanisms 30 and 50.
- the orientation of the connector B of the harness A with a connector gripped by the robot hand 1 may be deviated from the specified orientation. Therefore, it is desirable that the connector B of the harness A with a connector held by the robot hand 1 is photographed by the connector detection camera 61, and the amount of deviation of the orientation of the connector B with respect to the specified orientation is detected based on the captured connector image. ..
- the connector port has a connector with high accuracy.
- the connector B of the harness A can be inserted.
- the harness is narrowed by the pair of first fingers 31 and 32 of the wire chuck mechanism 30 in the front stage and the pair of second fingers 51 and 52 of the wire chuck mechanism 50 in the rear stage.
- the harness with the connector can be gripped by pressing the pair of pressing portions 41, 42 connected to the pair of first fingers 31, 32 in the front stage against the rear end surface of the connector.
- the connector can be held in a state of being substantially exposed except for the rear end face and protruding from the tips of the first fingers 31 and 32.
- the first fingers 31 and 32 can be suppressed to the extent that they do not protrude outward from the width of the connector, or even if they protrude, they slightly protrude.
- the robot hand 1 it is possible to insert a connector into a connector port installed in a narrow place. Further, in the process of gripping the harness with the connector, the connector placed on the stand is pressed from above with the push pin 23 and temporarily fixed. The gripping work of the harness with the connector is started with the outer surface of the connector in contact with the surface of the pedestal horizontal.
- the connector can be gripped in a predetermined position and in a predetermined direction. Even if the orientation of the connector is misaligned with respect to the specified orientation, the effect of the misalignment can be easily eliminated by detecting the amount of misalignment and correcting the orientation of the robot hand 1 when inserting the connector into the connector port. can do.
- the shape of the pair of pressing portions 41 and 42 can be any shape according to the size and shape of the target connector. As shown in FIG. 10, for example, the pair of pressing portions 81, 82 may be formed so as to form a Y-shaped planar shape extending forward as a whole.
- the pair of first fingers 31 and 32 are provided with a pair of covers 91 and 92 in order to align the harness C as straight as possible. May be good.
- the pair of covers 91 and 92 are configured in a comb shape that fits alternately.
- the robot hand 1 is equipped with two cameras 61 and 71, but may be provided with one camera. Further, as shown in FIG. 12, instead of equipping the robot hand 1 with a camera, one camera may be provided at a position overlooking the mounting location of the harness with a connector on the stand 7.
- the configuration is not limited to this embodiment as long as the pair of pressing portions 41, 42 can be pressed against the rear end surface of the connector while the harness is held tightly.
- the robot hand 1 is configured to include two wire material chuck mechanisms 30 and 50, but may be configured to have three or more wire material chuck mechanisms. Further, a single wire chuck mechanism for holding the harness and a mechanism for pressing the pressing portion against the rear end surface of the connector may be provided.
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Abstract
Description
以下、図2乃至図4を参照して、ハーネス把持用ロボットハンド1の構成を説明する。図2は、ロボットハンド1の前方側の斜視図である。図3は、ロボットハンド1の側面図である。図4はロボットハンド1の平面図である。図3においては、ロボットハンド1の主要な構成要素を明確にするために、コネクタ検出カメラ61と全体検出カメラ71とが省略されている。図4においては、プッシュ機構20のパッド21、前段の一対の第1フィンガ31,32、後段の一対の第2フィンガ51,52の位置関係を明確にするために、これら以外の構成要素が省略されている。
以下、図5乃至図9を参照して、本実施形態に係るロボットハンド1を用いたコネクタ付きハーネスAの把持手順を説明する。まず、全体検出カメラ71により撮影された全体画像からコネクタB、ハーネスCが検出され、ハーネスCの上方に2つのチャック機構30,50の開閉中心が配置されるようにロボットアーム機構3によりロボットハンド1が移動される。
図8に示すように、一対の第2フィンガ51,52によりハーネスCが保持された状態で、第2前後移動機構37により、前段の線材チャック機構30が前方に移動され、コネクタBの後端面に一対の押当部41,42が押し当てられる。それにより、一対の第2フィンガ51,52によるハーネスCの狭持位置に対するコネクタBの位置、向きを固定することができる。
図9に示すように、前段の線材チャック機構30の第1開閉機構35が閉められ、一対の第1フィンガ31,32によりハーネスCが狭持される。
以上説明した本実施形態に係るロボットハンド1は、前段の線材チャック機構30の一対の第1フィンガ31,32と,後段の線材チャック機構50の一対の第2フィンガ51,52とでハーネスを狭持しながら、前段の一対の第1フィンガ31,32に接続された一対の押当部41,42をコネクタの後端面に押し当てることで、コネクタ付きハーネスを把持することができる。コネクタをその後端面以外ほぼ露出させ、第1フィンガ31,32の先端に突き出した状態で保持することができる。コネクタの両側を狭持しないため、第1フィンガ31,32はコネクタの幅よりも外側に突出しない、または突出してもわずかに突出する程度で抑えることができる。本実施形態に係るロボットハンド1によれば、狭小な箇所に設置されているコネクタポートへのコネクタの差し込みが可能である。また、コネクタ付きハーネスを把持する工程では、置台に載置されたコネクタをプッシュピン23で上から押し当て、仮に固定する。置台の表面に接触するコネクタの外面を水平にした状態で、コネクタ付きハーネスの把持作業が開始される。つまり、コネクタが常に同じ姿勢にされた状態で、コネクタ付きハーネスの把持作業が実行されるため、コネクタを既定の位置で既定の向きに把持することができる。万が一、コネクタの向きが規定の向きに対してズレていても、そのズレ量を検出し、コネクタをコネクタポートに差し込むときのロボットハンド1の向きを補正することで、ズレによる影響を簡単に解消することができる。
Claims (7)
- 先端にコネクタが接続されたハーネスを把持するロボットハンドであって、
ハンドベースと、
前記ハンドベースに前後移動自在に支持され、前記コネクタを置台上に上方から押さえるためのプッシュ機構と、
前記ハンドベースに昇降自在且つ前後移動自在に支持され、前記ハーネスを挟持するための前段の線材チャック機構と、
前記ハンドベースに昇降自在に支持され、前記ハーネスを挟持するための後段の線材チャック機構と、
前記前段の線材チャック機構の一対のフィンガに設けられ、前記コネクタに後方から押し当てられる一対の押当部とを具備し、
前記プッシュ機構で前記コネクタを前記置台上に押さえて前記コネクタを前記置台と水平にし、
前記後段の線材チャック機構で前記ハーネスを挟持し、
前記前段の線材チャック機構を前方に移動して前記押当部を前記コネクタに押しつけた状態で前記前段の線材チャック機構により前記ハーネスを挟持し保持する、ロボットハンド。 - 前記コネクタを撮影するために前記ハンドベースにマウントされるコネクタ検出カメラをさらに備える請求項1記載のロボットハンド。
- 前記ハーネス及び前記コネクタを俯瞰撮影するために前記ハンドベースにマウントされる全体検出カメラをさらに備える請求項1又は2記載のロボットハンド。
- 前記押当部は、前方に向かって拡がるY字形状を有する請求項1乃至3のいずれか一項記載のロボットハンド。
- 前記押当部は、U字形状を有する請求項1乃至3のいずれか一項記載のロボットハンド。
- 前記前段の線材チャック機構の一対のフィンガには、前記ハーネスの湾曲を前記フィンガの高さ以内に抑えつけるために、互い違いに嵌まり合う櫛形の一対のカバーが取り付けられる請求項1乃至5のいずれか一項記載のロボットハンド。
- 先端にコネクタが接続されたハーネスを把持するコネクタ付きハーネスの把持方法であって、
ハンドベースにマウントされた又は外部に設置されたカメラにより撮像された画像に基づいて前記ハーネスの位置を検出し、
前記検出されたハーネスの位置に従って前記ハンドベースを移動し、前記ハンドベースに支持される前段の線材チャック機構と後段の線材チャック機構各々の一対のフィンガで前記検出されたハーネスを囲み、
前記カメラ又は前記ハンドベースにマウントされた又は外部に設置された他のカメラにより撮像された画像に基づいて前記コネクタの位置を検出し、
前記検出されたコネクタの位置に従って前記ハンドベースに支持されたプッシュ機構を前後に移動し、前記プッシュ機構のプッシュピンを降下させて前記コネクタを置台上に押止し、
前記後段の線材チャック機構の一対のフィンガで前記ハーネスを挟持し、
前記前段の線材チャック機構を前方に移動し、前記前段の線材チャック機構の一対のフィンガに設けられた一対の押当部を前記押止されたコネクタに後方から押し当て、
前記前段の線材チャック機構の一対のフィンガで前記ハーネスを挟持し、
前記プッシュピンと前記後段の線材チャック機構を前記コネクタと前記ハーネスから待避する、
コネクタ付きハーネスの把持方法。
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| Application Number | Priority Date | Filing Date | Title |
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| DE112021003858.3T DE112021003858T5 (de) | 2020-07-17 | 2021-07-12 | Roboterhand und Verfahren zum Greifen eines mit Steckern versehenen Kabelbaums |
| CN202180060390.XA CN116134555B (zh) | 2020-07-17 | 2021-07-12 | 机械手以及带连接器的线束的把持方法 |
| US18/014,083 US20230330867A1 (en) | 2020-07-17 | 2021-07-12 | Robot hand and method for gripping connector-equipped harness |
| JP2022536339A JP7457122B2 (ja) | 2020-07-17 | 2021-07-12 | ロボットハンド及びコネクタ付きハーネスの把持方法 |
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| JP5619587B2 (ja) * | 2010-12-10 | 2014-11-05 | 矢崎総業株式会社 | 端子挿入装置及び端子挿入方法 |
| JP2012223839A (ja) * | 2011-04-15 | 2012-11-15 | Yaskawa Electric Corp | ロボットシステムおよびロボットシステムの駆動方法 |
| JP5672322B2 (ja) * | 2013-03-14 | 2015-02-18 | 株式会社安川電機 | ロボット装置 |
| KR101677044B1 (ko) * | 2015-04-13 | 2016-11-18 | 재단법인대구경북과학기술원 | 조립공정용 작업 장치 |
| JP6755724B2 (ja) * | 2016-06-20 | 2020-09-16 | キヤノン株式会社 | 制御方法、ロボットシステム、および物品の製造方法 |
| JP2020138292A (ja) * | 2019-02-28 | 2020-09-03 | セイコーエプソン株式会社 | ロボットシステムおよび制御方法 |
| CN209401965U (zh) * | 2019-03-04 | 2019-09-17 | 深圳市美卡达科技有限公司 | 一种自动插线装置 |
| JP7015265B2 (ja) * | 2019-03-14 | 2022-02-02 | ファナック株式会社 | コネクタを含むワークを把持する作業ツールおよび作業ツールを備えるロボット装置 |
| DE102019106710B4 (de) * | 2019-03-15 | 2022-03-17 | Rittal Gmbh & Co. Kg | Greifer für die automatisierte Verdrahtung elektrischer Komponenten einer elektrischen Schaltanlage, ein entsprechender Roboter und ein entsprechendes Verfahren |
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2021
- 2021-07-12 DE DE112021003858.3T patent/DE112021003858T5/de active Pending
- 2021-07-12 JP JP2022536339A patent/JP7457122B2/ja active Active
- 2021-07-12 US US18/014,083 patent/US20230330867A1/en active Pending
- 2021-07-12 WO PCT/JP2021/026076 patent/WO2022014520A1/ja not_active Ceased
- 2021-07-12 CN CN202180060390.XA patent/CN116134555B/zh active Active
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| JP2005142031A (ja) * | 2003-11-06 | 2005-06-02 | Furukawa Electric Co Ltd:The | 電線付端子の挿入装置 |
| JP2006346769A (ja) * | 2005-06-14 | 2006-12-28 | Kodera Electronics Co Ltd | ワーク挟持装置 |
| JP2018069415A (ja) * | 2016-11-02 | 2018-05-10 | パナソニックIpマネジメント株式会社 | 電子機器組立装置および電子機器組立方法 |
| JP2020066067A (ja) * | 2018-10-22 | 2020-04-30 | ファナック株式会社 | ロボットハンドおよびロボットシステム |
Also Published As
| Publication number | Publication date |
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| CN116134555B (zh) | 2025-10-28 |
| JPWO2022014520A1 (ja) | 2022-01-20 |
| US20230330867A1 (en) | 2023-10-19 |
| CN116134555A (zh) | 2023-05-16 |
| DE112021003858T5 (de) | 2023-05-25 |
| JP7457122B2 (ja) | 2024-03-27 |
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