WO2014207846A1 - ストッパ機構、関節機構、およびロボット - Google Patents
ストッパ機構、関節機構、およびロボット Download PDFInfo
- Publication number
- WO2014207846A1 WO2014207846A1 PCT/JP2013/067553 JP2013067553W WO2014207846A1 WO 2014207846 A1 WO2014207846 A1 WO 2014207846A1 JP 2013067553 W JP2013067553 W JP 2013067553W WO 2014207846 A1 WO2014207846 A1 WO 2014207846A1
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- WIPO (PCT)
- Prior art keywords
- pin
- stopper
- rotating
- stopper mechanism
- rotating body
- Prior art date
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Classifications
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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—Programme-controlled manipulators
- B25J9/10—Programme-controlled manipulators characterised by positioning means for manipulator elements
- B25J9/1005—Programme-controlled manipulators characterised by positioning means for manipulator elements comprising adjusting means
- B25J9/101—Programme-controlled manipulators characterised by positioning means for manipulator elements comprising adjusting means using limit-switches, -stops
Definitions
- the disclosed embodiment relates to a stopper mechanism, a joint mechanism, and a robot.
- robots equipped with articulated robot arms are known.
- a plurality of link bodies are connected via a joint mechanism.
- the link body rotates around the axis via the joint mechanism, and the rotation range is controlled by software operation control, mechanical operation control, or a combination of both.
- a stopper mechanism that performs mechanical operation control
- a swinging body in which a first contact portion and a second contact portion are provided across a pivot, a first contact portion, and a second contact portion.
- a stopper body provided so as to be able to contact the contact portion.
- the swinging body is provided on one of the rotating body and the fixed body, and the stopper body is provided on either the rotating body or the fixed body to limit the rotation of the rotating body (see, for example, Patent Document 1). ).
- Patent Document 1 has a narrow movable range until the rotating body is forcibly stopped.
- One aspect of the embodiment has been made in view of the above, and an object thereof is to provide a stopper mechanism, a joint mechanism, and a robot that can limit the movable range of a rotating body to an arbitrary range.
- a stopper mechanism includes a rotating body, a fixed body, a pin body, a pin body guide, and a stopper body.
- the rotating body rotates around the axis
- the fixed body is disposed coaxially with the rotating body.
- the pin body is provided movably on either the rotating body or the fixed body.
- the pin body guide can move the pin body in the radial direction as the rotating body rotates.
- the stopper body is provided on either the rotating body or the fixed body, and abuts on the pin body that has moved a predetermined distance to restrict the rotation of the rotating body.
- a stopper mechanism a joint mechanism, and a robot that can limit the movable range of the rotating body within an arbitrary range.
- FIG. 1 is a side view showing a robot according to the embodiment.
- FIG. 2 is an enlarged view showing a part of the robot.
- FIG. 3A is a perspective view of the stopper mechanism according to the embodiment as viewed obliquely from above.
- FIG. 3B is a perspective view of the same stopper mechanism as viewed obliquely from below.
- FIG. 4 is a plan view of the plate body provided with the pin body guide of the stopper mechanism of the above.
- FIG. 5A is a side view showing the stopper mechanism of the same in cross section.
- FIG. 5B is an enlarged view of a part of FIG. 5A.
- FIG. 6 is a diagram showing a positional relationship between the moving pin body and the stopper body in the stopper mechanism same as above.
- FIG. 7A is a diagram showing the operation of the stopper mechanism.
- FIG. 7B is a diagram showing the operation of the stopper mechanism.
- FIG. 7C is a diagram showing the operation of the stopper mechanism.
- FIG. 7D is a diagram showing the operation of the stopper mechanism.
- FIG. 7E is a diagram showing the operation of the stopper mechanism.
- FIG. 1 is a side view showing a robot 1 according to the embodiment
- FIG. 2 is an enlarged view showing a part of the robot 1.
- the robot 1 according to the present embodiment includes a trunk portion 12 provided on a base 11, an arm portion 13 coupled to the trunk portion 12, and a wrist provided at the tip of the arm portion 13. Part 14.
- the base 11, the trunk 12, the arm 13, the wrist 14 and the like are used as link bodies, and these are connected via a joint mechanism.
- the robot 1 that is a so-called multi-joint robot has a structure including a pair of link bodies connected by a joint mechanism.
- the base 11 is fixed to the installation surface 100.
- drum 12 is provided in the horizontal direction so that rotation is possible via the turning part 2 comprised by a joint mechanism. That is, as shown in FIG. 2, the body portion 12 is interlocked with the drive shaft 21 of the motor 20 that is the drive source of the turning portion 2, and rotates around the vertical shaft 2 a.
- the arm portion 13 connected to the trunk portion 12 includes a first arm 131 and a second arm 132 that are link bodies via joint portions each constituted by a joint mechanism. It is configured to be pivotably connected.
- the first arm 131 is connected to the body 12 via the first joint portion 3a so as to be swingable in the front-rear direction (left-right direction in FIG. 1).
- the second arm 132 is connected to the tip of the first arm 131 via the second joint 3b so as to be swingable in the vertical direction.
- the first joint portion 3a for swinging the first arm 131 and the second joint portion 3b for swinging the second arm 132 are each configured by a joint mechanism including a drive shaft connected to a drive source. .
- the wrist part 14 is rotatably connected via a third joint part 3c which is also constituted by a joint mechanism.
- the stopper mechanism 4 is provided in the turning unit 2 constituted by a joint mechanism, as shown in FIG. That is, the turning part 2 that connects the base 11 and the body part 12 includes a drive shaft 21 extending from the motor 20, a speed reducer (not shown), and a stopper that mechanically restricts the turning action of the body part 12. And a mechanism 4.
- the trunk 12 can perform a turning motion of 360 degrees or more in the forward / reverse direction according to the operation program.
- the stopper mechanism 4 corresponds to the body part 12 that moves in a wide range, and can be forcibly stopped mechanically even if the body part 12 tries to turn beyond a predetermined range.
- the robot 1 can have a turning range over a wide range of 360 degrees or more, for example, enabling the robot 12 to perform a round motion in one direction of the trunk portion 12 a plurality of times. Even if it is set, safety can be ensured.
- the operation speed of the link body (here, the body 12) of the robot 1 tends to be more stable when a predetermined time has elapsed from the start of the operation. Therefore, when causing the robot 1 to perform some work such as a painting work or a welding work, the work speed can be stabilized and the work unevenness can be reduced as much as possible by widening the movable range of the link body.
- FIG. 3A is a perspective view of the stopper mechanism 4 according to the embodiment as viewed obliquely from above
- FIG. 3B is a perspective view of the stopper mechanism 4 as viewed from obliquely below
- FIG. 4 is a plan view of the plate body 45 provided with the pin body guide 44 of the stopper mechanism 4.
- 5A is a side view showing the stopper mechanism 4 in cross section
- FIG. 5B is an enlarged view of a part of FIG. 5A.
- the stopper mechanism 4 includes a rotating body 41, a fixed body 42, a pin body 43, a pin body guide 44, and a stopper body 46.
- the rotating body 41 is formed in a disk shape having a predetermined thickness and can rotate around the rotating shaft 400 (see FIG. 5A). 3B, 5A, and 5B, a linear groove portion 410 is formed in the radial direction, and one end 43a of the pin body 43 is slidably inserted into the groove portion 410. That is, the pin body 43 is provided to be movable in the radial direction of the rotating body 41 and the fixed body 42.
- the fixed body 42 is disposed coaxially with the rotating body 41 at a predetermined interval, and is formed in a disk shape having substantially the same diameter as the rotating body 41.
- a stopper body 46 is provided on the fixed body 42. Therefore, when the pin body 43 that has moved the groove portion 410 of the rotating body 41 by a predetermined distance in the radial direction contacts the stopper body 46, the rotation of the rotating body 41 can be restricted.
- the thickness of the fixed body 42 according to the present embodiment is larger than that of the rotating body 41, the thickness may be the same or thinner.
- the thickness of the fixed body 42 according to the present embodiment is larger than that of the rotating body 41, the thickness may be the same or thinner.
- both the rotary body 41 and the fixed body 42 are made into the solid structure, a hollow structure may be sufficient.
- the pin body guide 44 is formed by a spiral slit formed in the plate body 45, and can move the pin body 43 in the radial direction as the rotating body 41 rotates. .
- the pin body guide 44 is a spiral slit in which a plurality of slits are formed in the radial direction of the plate body 45. Further, here, the start end 44 a and the end end 44 b of the slit are provided at substantially the same angle with respect to the center of the plate body 45.
- the plate body 45 on which the pin body guide 44 is formed is a disk having the same diameter as the fixed body 42 and the rotating body 41, and is interposed between the fixed body 42 and the rotating body 41.
- the plate body 45 is supported on the main surface of the fixed body 42 at the distal ends of a plurality of connecting columns 47 erected at intervals in the circumferential direction, and is coaxially connected to the fixed body 42. .
- the pin body guide 44 can move the pin body 43 in the radial direction as the rotating body 41 rotates.
- the pin body 43 is formed narrowly at one end 43a inserted into the groove portion 410 and the other end 43b side inserted through the pin body guide 44, and widened in the middle portion.
- a portion 43c is formed.
- the pin body 43 is provided on the rotating body 41 side and the stopper body 46 is provided on the fixed body 42 side, but both may be provided on the opposite sides.
- FIG. 6 is a diagram showing a positional relationship between the moving pin body 43 and the stopper body 46 in the stopper mechanism 4.
- 7A to 7E are diagrams showing the operation of the stopper mechanism 4.
- the stopper body 46 includes first and second pendulum bodies 46a and 46b having substantially right-angled isosceles triangles provided so as to be swingable around a pivot 46c.
- a plurality of pendulum bodies are arranged side by side on the pivot 46c.
- first pendulum body 46a and the second pendulum body 46b is provided with a first contact portion 461 and a second contact portion 462 that can contact the pin body 43 with a pivot 46c interposed therebetween. And independently swing around the pivot axis 46c.
- first pendulum body 46 a and the second pendulum body 46 b are disposed with a space 46 d having a width that is larger than the diameter of the pin body 43. Further, the swing range of the first pendulum body 46a and the second pendulum body 46b around the pivot 46c is 90 degrees.
- the movable range (turning amount) of the body 12 can be arbitrarily set.
- the number of pendulum bodies 46a (46b), the width of the contact portion 461 (462) of the pendulum body 46a (46b), or the pitch between the slits of the spiral slits constituting the pin body guide 44 And the like may be set as appropriate. By doing so, the movable range (turning amount) of the trunk portion 12 can be easily set.
- FIG. 6 to FIG. 7E The first position P1 to the fifth position P5 indicating the position of the pin body 43 shown in FIG. 6 and the position of the pin body 43 shown in FIGS. 7A to 7E correspond to each other on a one-to-one basis. ing.
- the rotating mechanism 41 is connected to the body 12 side of the robot 1
- the fixed body 42 of the stopper mechanism 4 is connected to the base 11 side of the robot 1. ing.
- the pin body 43 is the 1st pendulum body. It is located in front of the first contact portion 461 of 46a. At this time, in FIG. 6, the pin body 43 is in the first position P1.
- the pin body 43 moves from the position P1 in FIG. 6 through the positions P2 to P4 and before the position P5.
- the pin body 43 abuts on the first abutting portion 461 of the first pendulum body 46a and pushes it down to pass. That is, the first abutment portion 461 of the first pendulum body 46a rotates from the state shown in FIG. 7A around the pivot axis 46c in the direction of the arrow 600 as shown in FIG.
- the first contact portion 461 is positioned below and the second contact portion 462 is positioned above.
- the pin body 43 passes through a space 46d (see FIG. 5B) formed between the first pendulum body 46a and the second pendulum body 46b. Therefore, the postures of the first pendulum body 46a and the second pendulum body 46b shown in FIG. 7C are the same as the state shown in FIG. 7B.
- the pin body 43 abuts against the first abutting portion 461 of the second pendulum body 46b and pushes it down to pass. That is, the first contact portion 461 of the second pendulum body 46b rotates from the state shown in FIG. 7C around the pivot 46c in the direction of the arrow 700 as shown in FIG.
- the first contact portion 461 is positioned below and the second contact portion 462 is positioned above.
- the trunk portion 12 While the pin body 43 is moving between the position P1 and the position before the position P5 in FIG. 6, the trunk portion 12 turns on the base 11 within the set movable range. When the trunk portion 12 rotates beyond the set movable range for some reason, the pin body 43 moves from the position P4 to the position P5 in FIG.
- the pin body 43 comes into contact with the first contact portion 462 of the second pendulum body 46b as shown in FIG. 7E.
- the second pendulum body 46b does not swing and functions as a stopper. Therefore, the movement of the pin body 43 is stopped, and as a result, the rotating body 41 is also forcibly stopped. That is, the body 12 that is interlocked with the rotating body 41 is forcibly stopped.
- the stopper mechanism 4 having the following configuration can be realized.
- a stopper including a rotating body 41 rotating around an axis, a fixed body 42 coaxially arranged with the rotating body 41, a pin body 43, a pin body guide 44, and a stopper body 46.
- Mechanism 4 The pin body 43 is movably provided on either the rotating body 41 or the fixed body 42.
- the pin body guide 44 can move the pin body 43 in the radial direction as the rotating body 41 rotates.
- the stopper body 46 is provided on either the rotating body 41 or the fixed body 42, and contacts the pin body 43 moved by a predetermined distance to restrict the rotation of the rotating body 41.
- the pin body guide 44 is a slit through which the pin body 43 is inserted.
- the pin body guide 44 is formed in a spiral shape on a plate body 45 interposed between the fixed body 42 and the rotating body 41, and each time the rotating body 41 makes a round.
- the stopper mechanism 4 configured to move the pin body 43 in the radial direction is realized.
- the pin body 43 is provided on the rotating body 41
- the stopper body 46 is provided on the fixed body 42
- the plate body 45 on which the slit is formed is realized by the stopper mechanism 4 configured to be coaxially connected to the fixed body 42. Is done.
- the rotating body 41 is realized with the stopper mechanism 4 having a linear groove portion 410 into which one end 43a of the pin body 43 inserted through the slit is slidably inserted.
- the stopper body 46 is provided so as to be swingable about the pivot 46c, and a stopper mechanism which is a pendulum body in which the first abutting portion 461 and the second abutting portion 462 are provided with the pivot 46c interposed therebetween. 4 is realized.
- a stopper mechanism which is a pendulum body in which the first abutting portion 461 and the second abutting portion 462 are provided with the pivot 46c interposed therebetween. 4 is realized.
- the stopper mechanism 4 in which a plurality of pendulum bodies are arranged side by side on the pivot 46c is realized.
- the stopper mechanism 4 includes a first pendulum body 46a and a second pendulum body 46b that are swinging around the pivot 46c independently of each other in the same structure.
- a joint mechanism including each stopper mechanism 4 described above and a drive shaft 21 that rotates a link body such as the base 11, the trunk 12, the arm 13, and the wrist 14 is realized. can do.
- the joint mechanism is the above-described turning portion 2, the first joint portion 3a, the second joint portion 3b, or the third joint portion 3c.
- the link body is the base 11, the trunk 12, the arm 13, the wrist 14, or the like of the robot 1 described above.
- the stopper mechanism 4 is described as being provided in the revolving part 2, but not limited to the revolving part 2, it may be provided in another joint part. In that case, the rotation ranges around the axes of the first arm 131, the second arm 132, the wrist unit 14 and the like can be mechanically restricted within a desired range.
- the movable range of the rotating body 41 can be limited within an arbitrary range exceeding 360 degrees. Therefore, it is possible to freely determine the rotation range required for the rotating body 41, and it can be suitably used for various rotating mechanisms, increasing the degree of freedom of application.
- the operation speed of the link body of the robot 1 can be operated in a stable state. Can be reduced.
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- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
Abstract
Description
2 旋回部(関節機構)
3a 第1関節部
3b 第2関節部
3c 第3関節部
4 ストッパ機構
12 胴部(リンク体)
20 モータ(駆動源)
21 駆動軸
41 回転体
42 固定体
43 ピン体
44 ピン体ガイド
45 板体
46 ストッパ体
46a 第1の振り子体
46b 第2の振り子体
46c 枢軸
410 溝部
461 第1の当接部
462 第2の当接部
Claims (8)
- 軸周りに回転する回転体と、
当該回転体と同軸上に配設された固定体と、
前記回転体または前記固定体のいずれか一方に移動自在に設けられたピン体と、
前記回転体の回転に伴い、前記ピン体を径方向へ移動可能としたピン体ガイドと、
前記回転体または前記固定体のいずれか他方に設けられ、所定距離移動した前記ピン体に当接して前記回転体の回転を規制するストッパ体と、
を備えることを特徴とするストッパ機構。 - 前記ピン体ガイドは、
前記ピン体を挿通するスリットであり、前記固定体と前記回転体との間に介設された板体に渦巻き状に形成され、前記回転体が一周する毎に前記ピン体を径方向に移動させる
ことを特徴とする請求項1に記載のストッパ機構。 - 前記ピン体は前記回転体に、前記ストッパ体は前記固定体に設けられ、前記スリットが形成された板体は、前記固定体と同軸的に連結される
ことを特徴とする請求項2に記載のストッパ機構。 - 前記回転体は、
前記スリットに挿通された前記ピン体の一端がスライド自在に挿入される直線状の溝部を有する
ことを特徴とする請求項3に記載のストッパ機構。 - 前記ストッパ体は、
枢軸を中心に揺動自在に設けられ、第1の当接部と第2の当接部とが前記枢軸を挟んで設けられた振り子体であり、前記ピン体が、前記第1の当接部または前記第2の当接部のいずれかに、一方向から当接した場合は前記回転体の動きを規制する一方、他方向から当接した場合は前記振り子体を揺動させる
ことを特徴とする請求項1~4のいずれか1つに記載のストッパ機構。 - 前記振り子体が、前記枢軸上に複数個並設されている
ことを特徴とする請求項5に記載のストッパ機構。 - 請求項1に記載のストッパ機構と、
リンク体を回動させる駆動軸と、
を備えることを特徴とする関節機構。 - 請求項7に記載の関節機構と、
当該関節機構の前記駆動軸に動力を伝達する駆動源と、
前記関節機構を介して連結された少なくとも1組の前記リンク体と、
を備えることを特徴とするロボット。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201380076695.5A CN105228799A (zh) | 2013-06-26 | 2013-06-26 | 制动器机构、关节机构及机器人 |
JP2015523720A JPWO2014207846A1 (ja) | 2013-06-26 | 2013-06-26 | ストッパ機構、関節機構、およびロボット |
KR1020157033909A KR20160003812A (ko) | 2013-06-26 | 2013-06-26 | 스토퍼 기구, 관절 기구, 및 로봇 |
PCT/JP2013/067553 WO2014207846A1 (ja) | 2013-06-26 | 2013-06-26 | ストッパ機構、関節機構、およびロボット |
Applications Claiming Priority (1)
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PCT/JP2013/067553 WO2014207846A1 (ja) | 2013-06-26 | 2013-06-26 | ストッパ機構、関節機構、およびロボット |
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WO2014207846A1 true WO2014207846A1 (ja) | 2014-12-31 |
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PCT/JP2013/067553 WO2014207846A1 (ja) | 2013-06-26 | 2013-06-26 | ストッパ機構、関節機構、およびロボット |
Country Status (4)
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JP (1) | JPWO2014207846A1 (ja) |
KR (1) | KR20160003812A (ja) |
CN (1) | CN105228799A (ja) |
WO (1) | WO2014207846A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109715353A (zh) * | 2016-09-16 | 2019-05-03 | 株式会社神户制钢所 | 机械限动装置以及机器人 |
JPWO2021145460A1 (ja) * | 2020-01-17 | 2021-07-22 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102648105B1 (ko) * | 2016-12-29 | 2024-03-18 | 엘지전자 주식회사 | 안내 로봇 |
KR101955548B1 (ko) * | 2017-08-25 | 2019-03-08 | 주식회사 토룩 | 액츄에이터 유닛 및 액츄에이터 모듈 |
CN109103137A (zh) * | 2018-08-17 | 2018-12-28 | 浙江雅市晶科技有限公司 | 一种半导体搬运设备的抓取装置 |
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JPH0768485A (ja) * | 1993-09-03 | 1995-03-14 | Mitsubishi Electric Corp | 回転関節装置 |
JPH07167244A (ja) * | 1993-12-15 | 1995-07-04 | Fujitsu Ltd | 出力軸の回転角度制御機構 |
JPH10202574A (ja) * | 1997-01-17 | 1998-08-04 | Tokico Ltd | ロボットの回動角度制限機構 |
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CN2188441Y (zh) * | 1994-04-15 | 1995-02-01 | 韩学林 | 自动松紧定心卡盘 |
CN100431757C (zh) * | 2006-05-31 | 2008-11-12 | 重庆大学 | 电动卡盘装置 |
JP5818346B2 (ja) * | 2011-04-27 | 2015-11-18 | 日本電産サンキョー株式会社 | 回転体の回転範囲規制機構および産業用ロボット |
-
2013
- 2013-06-26 KR KR1020157033909A patent/KR20160003812A/ko not_active Ceased
- 2013-06-26 WO PCT/JP2013/067553 patent/WO2014207846A1/ja active Application Filing
- 2013-06-26 JP JP2015523720A patent/JPWO2014207846A1/ja active Pending
- 2013-06-26 CN CN201380076695.5A patent/CN105228799A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0768485A (ja) * | 1993-09-03 | 1995-03-14 | Mitsubishi Electric Corp | 回転関節装置 |
JPH07167244A (ja) * | 1993-12-15 | 1995-07-04 | Fujitsu Ltd | 出力軸の回転角度制御機構 |
JPH10202574A (ja) * | 1997-01-17 | 1998-08-04 | Tokico Ltd | ロボットの回動角度制限機構 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109715353A (zh) * | 2016-09-16 | 2019-05-03 | 株式会社神户制钢所 | 机械限动装置以及机器人 |
JPWO2021145460A1 (ja) * | 2020-01-17 | 2021-07-22 | ||
JP7368507B2 (ja) | 2020-01-17 | 2023-10-24 | ヤマハ発動機株式会社 | アブソリュートエンコーダ |
US12092498B2 (en) | 2020-01-17 | 2024-09-17 | Yamaha Hatsudoki Kabushiki Kaisha | Absolute encoder |
Also Published As
Publication number | Publication date |
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CN105228799A (zh) | 2016-01-06 |
KR20160003812A (ko) | 2016-01-11 |
JPWO2014207846A1 (ja) | 2017-02-23 |
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