WO2022045293A1 - ロボット - Google Patents
ロボット Download PDFInfo
- Publication number
- WO2022045293A1 WO2022045293A1 PCT/JP2021/031513 JP2021031513W WO2022045293A1 WO 2022045293 A1 WO2022045293 A1 WO 2022045293A1 JP 2021031513 W JP2021031513 W JP 2021031513W WO 2022045293 A1 WO2022045293 A1 WO 2022045293A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axis
- balancer
- pair
- arm
- around
- 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.)
- Ceased
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Classifications
-
- 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
- B25J19/0008—Balancing devices
- B25J19/0016—Balancing devices using springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/0009—Constructional details, e.g. manipulator supports, bases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J17/00—Joints
Definitions
- This disclosure relates to robots.
- a robot that rotates and drives the first arm with respect to the swivel body around the horizontal rotation axis by a motor, and is equipped with a balancer that reduces the load torque acting on the motor by using the elastic force of the compression coil spring.
- a balancer that reduces the load torque acting on the motor by using the elastic force of the compression coil spring.
- the mounting position of the balancer on the first arm is largely eccentric with respect to the rotation axis.
- the stroke of the balancer corresponding to the operating range of the first arm becomes large.
- the number of turns is increased, the total length of the balancer is increased and the rigidity of the compression coil spring is reduced.
- One aspect of the present disclosure is a pair of flanges, a first member and a second member that is rotationally driven with respect to the first member around a predetermined axis, and is arranged at intervals in the axis direction.
- a second member having a portion and being rotatably supported by the first member by the flange portion around the axis, and a mounting axis parallel to the axis on the first member and the second member, respectively. It is inserted between a balancer that is rotatably attached and a pair of flange portions, and is detachably attached to the second member. It is radially inward from the outer peripheral surface of the flange portion and eccentric with respect to the axis. It is a robot provided with an adapter for arranging the attachment axis of the balancer with respect to the second member at the designated position.
- FIG. 3 is a schematic cross-sectional view of the balancer of the robot of FIG. It is a schematic diagram which shows the state of the vertical posture of the 1st arm in the robot of FIG. It is a schematic diagram which shows the state which the 1st arm is inclined in the robot of FIG. It is a modification of the robot of FIG. 1, and is a partially enlarged view which shows the attachment state of the 1st arm and an adapter.
- the robot 1 according to the embodiment of the present disclosure will be described below with reference to the drawings.
- the robot 1 according to the present embodiment has a base 10 installed on a floor surface and a swivel cylinder rotatably supported with respect to the base 10 around a first axis J1 extending in the vertical direction. (First member) 20 is provided.
- the robot 1 has a first arm (second member) 30 rotatably supported with respect to a swivel cylinder 20 around a second axis (axis) J2 extending in the horizontal direction, and a third axis parallel to the second axis J2.
- a second arm 40 rotatably supported with respect to the first arm 30 is provided around J3.
- the robot 1 has a 3-axis wrist unit 50 attached to the tip of the second arm 40, a balancer 60 arranged between the swivel body 20 and the first arm 30, and a balancer 60 as the first arm 30. It is equipped with an adapter 70 that can be attached to and detached from.
- a pair of disk-shaped flange portions 31 that are arranged at intervals in the direction along the second axis J2 and extend in the direction orthogonal to the second axis J2 are integrally provided. ing.
- the swivel body 20 is provided with a pair of support portions 21 arranged at positions sandwiching the pair of flange portions 31 of the first arm 30 from the outside in the direction along the second axis J2.
- a speed reducer 34 is arranged between each flange portion 31 and each support portion 21.
- a motor 35 is fixed to one of the support portions 21, and the rotation of the motor shaft (not shown) is input to both of the pair of speed reducers 34.
- the two speed reducers 34 reduce the rotation of the motor shaft at the same reduction ratio and transmit the speed to each flange portion 31.
- the first arm 30 is rotated around the second axis J2 with respect to the swivel cylinder 20, and the load torque acting on the first arm 30 is shared and received by the two speed reducers 34.
- each flange portion 31 is provided with a seat surface 32 arranged on the balancer 60 side with the first arm 30 arranged in the vertical direction.
- Each seat surface 32 is provided with a plurality of screw holes for fixing the adapter 70, which will be described later.
- the balancer 60 includes a housing 61, a disk-shaped movable member 62 movably housed in the housing 61 in the longitudinal axis OL1 direction, a long rod 63, and a compression coil spring 64. And have.
- the housing 61 includes a cylindrical main body portion 61a and end plates 61b and 61c that close both ends of the main body portion 61a in the longitudinal axis OL1 direction, respectively.
- One end plate 61b is provided with a through hole 61h in the center thereof that penetrates in the direction along the longitudinal axis OL1 of the main body portion 61a.
- a rod 63 movably penetrates through the through hole 61h in the direction of the longitudinal axis OL1.
- One end of the rod 63 arranged inside the housing 61 is fixed to the movable member 62, and the mounting block 66 is fixed to the other end of the rod 63 arranged outside the housing 61.
- the compression coil spring 64 is housed in the housing 61 in a state of being sandwiched between the movable member 62 and the end plate 61b. As a result, the movable member 62 is pressed toward the end plate 61c along the longitudinal axis OL1 by the elastic restoring force of the compression coil spring 64, and the rod 63 is forced in the direction of being pulled into the housing 61.
- the main body portion 61a of the housing 61 is provided with first mounting holes 65 extending along the orthogonal axis OL2 orthogonal to the longitudinal axis OL1 on both sides of the intermediate position in the longitudinal axis OL1 direction, for example, the central position in the diametrical direction.
- first mounting holes 65 extending along the orthogonal axis OL2 orthogonal to the longitudinal axis OL1 on both sides of the intermediate position in the longitudinal axis OL1 direction, for example, the central position in the diametrical direction.
- a pair of first shafts 22 extending in a direction along the first mounting axis (mounting axis) J11 parallel to the second axis J2 are inserted into each first mounting hole 65.
- the first shaft 22 is fixed to the swivel cylinder 20.
- the balancer 60 is rotatably attached to the swivel cylinder 20 around the first attachment axis J11.
- the mounting block 66 is provided with a second mounting hole 67 extending in a direction orthogonal to the longitudinal axis OL1.
- the adapter 70 has a second shaft (shaft) 71 that rotatably fits into the second mounting hole 67 of the mounting block 66, and a substantially parallel band that supports both ends of the second shaft 71. It is provided with a pair of plate-shaped support plates 72. Further, the adapter 70 includes a connecting portion 73 that connects one ends of the support plates 72 to each other, and a pair of fixing portions 74 that extend from the other end of the support plate 72 in a direction orthogonal to the support plate 72.
- the pair of support plates 72 are provided with through holes penetrating in the plate thickness direction, and the second shaft 71 is detachably fixed in the direction penetrating these through holes.
- the adapter 70 is attached to the tip of the rod 63 by fixing the second shaft 71 fitted to the second attachment hole 67 of the attachment block 66 to the support plate 72. Then, a pair of support plates 72 fixing the second shaft 71 are inserted between the pair of flange portions 31, and a bolt penetrated through the through hole of the fixing portion 74 of the adapter 70 is inserted into the seat of the first arm 30. The adapter 70 is fixed to the first arm 30 by fastening to the screw hole of the surface 32.
- the second shaft 71 is arranged radially inward from the outer peripheral surface of the flange portion 31 along the second mounting axis (mounting axis) J12 parallel to the second axis J2, and the rod 63 of the balancer 60 is arranged.
- the tip is rotatably attached to the first arm 30 around the second attachment axis J12.
- the second mounting axis J12 is the first mounting axis J11 and the second axis J2 in a state where the first arm 30 extends in the vertical direction. It is placed on a plane containing and.
- the amount of protrusion of the rod 63 from the housing 61 is the smallest, and the amount of compression of the compression coil spring 64 is also the smallest. Further, since the second mounting axis J12 is arranged in the plane including the second mounting axis J2 and the first mounting axis J11, the auxiliary torque around the second axis J2 by the balancer 60 is not generated.
- the second mounting axis J12 which is eccentric with respect to the second axis J2, is moved around the second axis J2 in a direction away from the first mounting axis J11.
- the balancer 60 rotates the housing 61 around the first mounting axis J11 in response to the movement of the second mounting axis J12 with respect to the first mounting axis J11, and increases the amount of protrusion of the rod 63 from the housing 61. As a result, the amount of compression of the compression coil spring 64 increases, and the force in the direction of pulling the rod 63 back into the housing 61 increases.
- the compression coil spring 64 has the length of the perpendicular line drawn from the second axis J2 to the longitudinal axis OL1 of the rod 63.
- the auxiliary torque multiplied by the elastic force of is acting in the opposite direction to the gravitational load torque.
- the magnitude of the auxiliary torque increases as the inclination angle of the first arm 30 with respect to the vertical line increases.
- the second shaft 71 is arranged radially inward from the outer peripheral surface of the flange portion 31 by using the adapter 70.
- the eccentric distance of the second mounting axis J12 with respect to the second axis J2 can be sufficiently reduced, and the stroke of the rod 63 corresponding to the movable range of the first arm 30 around the second axis J2 can be suppressed to a small size. can.
- the total length of the compression coil spring 64 can be shortened by keeping the stroke of the rod 63 small.
- the effective number of turns can be kept small, and high rigidity can be obtained without increasing the wire diameter and the outer diameter of the compression coil spring 64.
- the second shaft is radially inward from the outer peripheral surface of the flange portion 31 by the adapter 70 from the direction intersecting the second axis J2. 71 can be easily arranged.
- the adapter 70 to the first arm 30 in a detachable manner, there is an advantage that the balancer 60 can be easily attached to and detached from the first arm 30 without removing the speed reducer 34 and the motor 35.
- the second shaft 71 is supported by the pair of flange portions 31 via the pair of support plates 72, the second shaft 71 is supported even if the elastic force generated by the balancer 60 is increased. It can be firmly supported while suppressing the deformation of.
- the fixing portion 74 of the adapter 70 was fixed to the seat surface 32 provided on the outer peripheral surface of the flange portion 31 from the balancer 60 side. Thereby, the adapter 70 can be fixed to the first arm 30 while giving the initial compression of the compression coil spring 64 by fastening the bolt to the screw hole of the seat surface 32.
- the fixing portion 74 may be attached to the seat surface 32 provided on the outer peripheral surface on the side opposite to the balancer 60 with the first arm 30 interposed therebetween.
- a flat plate-shaped fixing portion 74 for connecting one ends of the pair of support plates 72 may be provided.
- the force that pulls the rod 63 toward the housing 61 always presses the fixing portion 74 against the seat surface 32 of the first arm 30 via the second shaft 71, so that the adapter 70 is attached to the first arm 30.
- the fastening force of the bolt can be reduced. Therefore, the size and the number of bolts used can be kept small, and the adapter 70 can be made smaller and lighter.
- the pair of speed reducers 34 are arranged at positions sandwiching the flange portion 31 from the outside, but the present invention is not limited to this, and a single speed reducer 34 or three or more speed reducers 34 may be arranged. good.
- Robot 20 swivel body (first member) 30 1st arm (2nd member) 31 Flange part 60 Balancer 64 Compression coil spring 70 Adapter 71 Second shaft (shaft) 74 Fixed part J11 1st mounting axis (mounting axis) J12 2nd mounting axis (mounting axis) J2 2nd axis (axis)
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
したがって、バランサの大型化を防止しつつ、より大きな補助トルクを発生させることが望まれている。
本実施形態に係るロボット1は、図1に示されるように、床面に設置されるベース10と、鉛直方向に延びる第1軸線J1回りにベース10に対して回転可能に支持された旋回胴(第1部材)20とを備えている。
旋回胴20には、第1アーム30の一対のフランジ部31を第2軸線J2に沿う方向の外側から挟む位置に配置される一対の支持部21が設けられている。
ハウジング61内に配置されているロッド63の一端は、可動部材62に固定され、ハウジング61外に配置されているロッド63の他端には、取付ブロック66が固定されている。
アダプタ70は、図2に示されるように、取付ブロック66の第2取付孔67に回転可能に嵌合する第2シャフト(シャフト)71と、第2シャフト71の両端を支持する略平行な帯板状の一対の支持板72とを備えている。また、アダプタ70は、支持板72の一端同士を連結する連結部73と、支持板72の他端から支持板72に直交する方向に延びる一対の固定部74とを備えている。
一対の支持板72には、板厚方向に貫通する貫通孔が設けられ、これらの貫通孔を貫通する方向に第2シャフト71が着脱可能に固定される。
本実施形態に係るロボット1においては、例えば、図4に示されるように、第1アーム30が鉛直方向に延びている状態において、第2取付軸線J12が第1取付軸線J11と第2軸線J2とを含む平面上に配置される。
この場合には、例えば、図6に示されるように、一対の支持板72の一端同士を連結する平板状の固定部74を設ければよい。
したがって、ボルトのサイズおよび使用本数を小さく抑えることができ、アダプタ70の小型化および軽量化を図ることができる。
20 旋回胴(第1部材)
30 第1アーム(第2部材)
31 フランジ部
60 バランサ
64 圧縮コイルバネ
70 アダプタ
71 第2シャフト(シャフト)
74 固定部
J11 第1取付軸線(取付軸線)
J12 第2取付軸線(取付軸線)
J2 第2軸線(軸線)
Claims (4)
- 第1部材と、
所定の軸線回りに、前記第1部材に対して回転駆動される第2部材であって、前記軸線方向に間隔をあけて配置される一対のフランジ部を備え、各該フランジ部によって前記第1部材に前記軸線回りに回転可能に支持される第2部材と、
前記第1部材および前記第2部材に、前記軸線に平行な取付軸線回りにそれぞれ回転可能に取り付けられるバランサと、
一対の前記フランジ部の間に挿入されて、前記第2部材に着脱可能に取り付けられ、前記フランジ部の外周面よりも径方向内方かつ前記軸線に対して偏心した位置に、前記第2部材に対する前記バランサの前記取付軸線を配置するアダプタとを備えるロボット。 - 前記アダプタが、前記軸線を挟んで前記第1部材における前記取付軸線とは反対側において前記第2部材の一部に取り付けられる請求項1に記載のロボット。
- 前記アダプタが、一対の前記フランジ部にそれぞれ固定される一対の固定部と、一対の該固定部に両端が支持され、前記バランサの一端を前記取付軸線回りに回転可能に取り付けるシャフトを備える請求項1または請求項2に記載のロボット。
- 前記バランサが、圧縮コイルバネを内蔵したシリンダ型のバランサである請求項1から請求項3のいずれかに記載のロボット。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202180049211.2A CN115867418B (zh) | 2020-08-31 | 2021-08-27 | 机器人 |
| US18/015,176 US12070855B2 (en) | 2020-08-31 | 2021-08-27 | Robot |
| JP2022545732A JP7453392B2 (ja) | 2020-08-31 | 2021-08-27 | ロボット |
| DE112021002890.1T DE112021002890T5 (de) | 2020-08-31 | 2021-08-27 | Roboter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020145567 | 2020-08-31 | ||
| JP2020-145567 | 2020-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022045293A1 true WO2022045293A1 (ja) | 2022-03-03 |
Family
ID=80355378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/031513 Ceased WO2022045293A1 (ja) | 2020-08-31 | 2021-08-27 | ロボット |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12070855B2 (ja) |
| JP (1) | JP7453392B2 (ja) |
| CN (1) | CN115867418B (ja) |
| DE (1) | DE112021002890T5 (ja) |
| WO (1) | WO2022045293A1 (ja) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004160634A (ja) * | 2002-11-14 | 2004-06-10 | Como Spa | 産業ロボット |
| US20130061707A1 (en) * | 2011-09-13 | 2013-03-14 | Hon Hai Precision Industry Co., Ltd. | Balancing mechanism and robot using the same |
| JP2016030315A (ja) * | 2014-07-29 | 2016-03-07 | 株式会社安川電機 | ロボット |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5721297A (en) | 1980-05-29 | 1982-02-03 | Karlsruhe Augsburg Iweka | Turning driving device for mechanical section supported in rotatable shape |
| DE3115061C2 (de) | 1980-05-29 | 1985-05-30 | Kuka Schweissanlagen + Roboter Gmbh, 8900 Augsburg | Spielfreier Schwenkantrieb für schwenkbar gelagerte Bauteile |
| JPS62148187A (ja) | 1985-12-18 | 1987-07-02 | 株式会社安川電機 | ロボツトア−ムのバランス装置 |
| JPH0615156B2 (ja) | 1986-11-18 | 1994-03-02 | 日本電気株式会社 | 産業用ロボツト |
| JPS63229287A (ja) | 1987-03-17 | 1988-09-26 | 富士通株式会社 | 関節ユニツト |
| JPH0847885A (ja) | 1994-08-05 | 1996-02-20 | Yaskawa Electric Corp | 産業用ロボットのバランサ装置 |
| JPH11277479A (ja) * | 1998-03-31 | 1999-10-12 | Fanuc Ltd | バネバランサ装置 |
| JP4449241B2 (ja) * | 2001-03-27 | 2010-04-14 | 株式会社安川電機 | 産業用ロボット |
| DE602007005345D1 (de) * | 2006-01-13 | 2010-04-29 | Nabtesco Corp | Gelenkmechanismus |
| EP1905551B1 (en) * | 2006-09-27 | 2010-02-24 | Abb Ab | Industrial robot with pressurized air supply in balancing device |
| JP2009050951A (ja) | 2007-08-27 | 2009-03-12 | Nachi Fujikoshi Corp | 産業用ロボット |
| KR100981437B1 (ko) * | 2008-07-24 | 2010-09-13 | 한국기계연구원 | 산업용 다관절 로봇의 스프링밸런서 설치방법 |
| JP5381854B2 (ja) | 2010-03-26 | 2014-01-08 | 株式会社安川電機 | 産業用ロボット |
| CN102161206B (zh) * | 2010-12-29 | 2013-03-06 | 奇瑞汽车股份有限公司 | 一种机器人平衡器联接结构及其装配方法 |
| JP5616476B2 (ja) | 2013-03-29 | 2014-10-29 | ファナック株式会社 | バランサ装置を備える産業用ロボット |
| JP2016030317A (ja) | 2014-07-29 | 2016-03-07 | 株式会社安川電機 | ロボット |
| KR101881350B1 (ko) | 2016-08-22 | 2018-07-25 | (주)한국미래기술 | 무게가 최소화된 고하중 구동모듈 |
| CN206216735U (zh) * | 2016-09-13 | 2017-06-06 | 湖北骐通智能科技股份有限公司 | 用于工业机器人的平衡缸及工业机器人 |
| JP6725580B2 (ja) | 2018-04-24 | 2020-07-22 | ファナック株式会社 | ロボット用重力バランサおよびロボット |
| TWI731259B (zh) | 2018-08-28 | 2021-06-21 | 財團法人工業技術研究院 | 用於機械手臂的負載平衡裝置 |
| JP7346023B2 (ja) | 2018-12-12 | 2023-09-19 | 川崎重工業株式会社 | 多関節ロボット |
-
2021
- 2021-08-27 US US18/015,176 patent/US12070855B2/en active Active
- 2021-08-27 JP JP2022545732A patent/JP7453392B2/ja active Active
- 2021-08-27 CN CN202180049211.2A patent/CN115867418B/zh active Active
- 2021-08-27 WO PCT/JP2021/031513 patent/WO2022045293A1/ja not_active Ceased
- 2021-08-27 DE DE112021002890.1T patent/DE112021002890T5/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004160634A (ja) * | 2002-11-14 | 2004-06-10 | Como Spa | 産業ロボット |
| US20130061707A1 (en) * | 2011-09-13 | 2013-03-14 | Hon Hai Precision Industry Co., Ltd. | Balancing mechanism and robot using the same |
| JP2016030315A (ja) * | 2014-07-29 | 2016-03-07 | 株式会社安川電機 | ロボット |
Also Published As
| Publication number | Publication date |
|---|---|
| US12070855B2 (en) | 2024-08-27 |
| DE112021002890T5 (de) | 2023-07-06 |
| CN115867418A (zh) | 2023-03-28 |
| JPWO2022045293A1 (ja) | 2022-03-03 |
| JP7453392B2 (ja) | 2024-03-19 |
| US20230191591A1 (en) | 2023-06-22 |
| CN115867418B (zh) | 2025-07-08 |
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