WO2016063314A1 - ロボットハンド及びロボット - Google Patents
ロボットハンド及びロボット Download PDFInfo
- Publication number
- WO2016063314A1 WO2016063314A1 PCT/JP2014/005363 JP2014005363W WO2016063314A1 WO 2016063314 A1 WO2016063314 A1 WO 2016063314A1 JP 2014005363 W JP2014005363 W JP 2014005363W WO 2016063314 A1 WO2016063314 A1 WO 2016063314A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- node
- input shaft
- base
- driven
- shaft
- 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
Links
Images
Classifications
-
- 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
- B25J15/08—Gripping heads and other end effectors having finger members
-
- 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
- B25J15/0009—Gripping heads and other end effectors comprising multi-articulated fingers, e.g. resembling a human hand
-
- 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
- B25J19/0004—Braking devices
-
- 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
- B25J9/102—Gears specially adapted therefor, e.g. reduction gears
Definitions
- the present invention relates to a robot hand that is an end effector attached to the tip of a robot arm, and a robot equipped with the same.
- the finger of the robot hand described in Patent Document 1 includes a driving node that is rotationally driven around a base end supported by a base, and a follower that is pivotally connected to the base.
- the Chebyshev link mechanism includes a base end portion rotatably connected to the distal end portion of the driving node and an intermediate portion rotatably connected to the distal end portion of the driven node.
- the fingertip part is provided in the front-end
- the rotation range of the prime mover is determined.
- the gripper type robot hand using the Chebyshev link mechanism of Patent Document 1 and having two fingers has two driving nodes, and each driving node has a motor.
- the rotating shafts of the two driving nodes are arranged in parallel, and the two motors are concentrated on one side of the base on which the driving node is pivotally supported.
- a reduction gear is used in combination with a motor, and the motor and the reduction gear are arranged in series (that is, coaxially).
- the finger drive unit including these motors and the speed reducer and the robot arm, the movable range of the robot hand is limited. Therefore, it is desirable that the finger drive unit be as small as possible.
- the fingertip stroke of the finger is larger than the length of the fixed node, so that the finger can be miniaturized with respect to the required fingertip stroke.
- the finger drive unit in the robot hand which realized the miniaturization of the finger, further miniaturization of the entire robot hand is desired by miniaturization of the finger drive unit.
- the present invention has been made in view of the above circumstances, and an object thereof is to realize further miniaturization of a robot hand using a Chebyshev link mechanism.
- a robot hand includes a base, a gripping claw, a Chebyshev link mechanism that connects the base and the gripping claw, a housing fixed to the base, and at least one of the base and the housing
- An input shaft for inputting power to the Chebyshev link mechanism an output shaft parallel to the input shaft, a motor supported by the housing, and coaxially arranged with the input shaft.
- a transmission shaft that is rotatably supported by the housing, a power transmission mechanism that transmits power from the output shaft to the transmission shaft, and a reduction gear provided between the transmission shaft and the input shaft It is characterized by providing these.
- a robot according to an aspect of the present invention includes a robot main body having a robot arm, the robot hand attached to a distal end portion of the robot arm, and a controller that controls operations of the robot arm and the robot hand. It is characterized by providing.
- the motor and the speed reducer can be arranged in parallel. Therefore, the size of the housing (particularly, the size in the direction parallel to the output shaft of the motor) can be reduced as compared with the robot hand in which the motor and the speed reducer are arranged in series. As a result, it is possible to reduce the size of the robot hand.
- FIG. 1 is a schematic side view of an articulated robot provided with a robot hand according to an embodiment of the present invention.
- FIG. 2 is a diagram showing a schematic configuration of the robot hand.
- FIG. 3 shows the fingers of the robot hand with the fingertips closed.
- FIG. 4 is a view showing the fingers of the robot hand with the fingertip opened.
- FIG. 5 is a V arrow view of FIG. 2 showing the structure of the finger of the robot hand.
- 6 is a cross-sectional view taken along the line VI-VI in FIG. 2 showing the structure of the finger drive section.
- FIG. 7 is a diagram showing the configuration of the control system of the articulated robot.
- FIG. 8A is a diagram of a robot hand according to the present embodiment, and FIG.
- FIG. 8B is a diagram of a robot hand according to a comparative example in which a servo motor, a speed reducer, and a brake device are coaxially arranged.
- FIG. 9 is a diagram for explaining a general Chebyshev link mechanism and its movement.
- FIG. 1 is a schematic side view of an articulated robot 10 including a robot hand according to an embodiment of the present invention.
- an articulated robot 10 according to an embodiment of the present invention includes a robot body 2 having a robot arm 20, a robot hand 1 attached to the tip of the robot arm 20, and an articulated robot 10.
- the controller 3 is generally configured to control the operation.
- each component of the articulated robot 10 will be described in detail.
- the robot body 2 includes a base 30 and a robot arm 20 supported by the base 30.
- the robot arm 20 includes a vertical arm pivot axis 21, a horizontal arm longitudinal axis 22, a horizontal arm vertical axis 23, a wrist rotation axis 24 substantially orthogonal to the arm vertical axis 23, and a wrist bending axis substantially orthogonal to the wrist rotation axis 24. 25 and a wrist twist axis 26 substantially orthogonal to the wrist bending axis 25. That is, the robot body 2 is a six-axis vertical articulated robot.
- the robot main body 2 to which the present invention is applied is not limited to this, and it is only necessary to have the robot arm 20.
- the robot body 2 may be, for example, a vertical articulated robot other than six axes, a horizontal articulated robot, or the like.
- the robot arm 20 includes a first arm 31 connected to the base 30 so as to be rotatable around the arm turning shaft 21, and a first arm 31 connected to the tip of the first arm 31 so as to be rotatable around the arm front-rear axis 22.
- a fourth arm 34, a wrist 35 connected to the tip of the fourth arm 34 so as to be rotatable around the wrist bending shaft 25, and a hand adapter 36 connected around the wrist 35 and the wrist twisting shaft 26 are provided.
- the robot body 2 further includes drive mechanisms such as servo motors 61 to 66 (FIG. 7) for rotating the arm elements 31 to 35 around the respective axes 21 to 26.
- FIG. 2 is a diagram showing a schematic configuration of the robot hand 1
- FIG. 3 is a diagram showing the finger 42 of the robot hand 1 with the fingertip closed
- FIG. 4 is a finger of the robot hand 1 with the fingertip opened.
- FIG. 5 is a view taken along the arrow V in FIG. 2 showing the structure of the finger 42 of the robot hand 1
- FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 2 showing the structure of the drive unit 43 of the finger 42. is there.
- the robot hand 1 includes a base 41 fixed to the hand adapter 36 of the robot body 2, a pair of fingers 42 supported by the base 41, and a drive unit that drives the pair of fingers 42. 43.
- a gripping claw 44 is attached to each fingertip (tip portion) of the pair of fingers 42.
- a cushioning material 45 is affixed to the contact portion of the gripping claws 44 with the workpiece.
- one finger 42 is a main driving system finger 42A that operates by power transmitted from a servo motor 81 described later, and the other finger 42 is power transmitted from the main driving system finger 42A (from Specifically, it is a driven finger 42 ⁇ / b> B that operates by the power transmitted from the input shaft 46 to the driven input shaft 47.
- the main finger 42A and the driven finger 42B are not particularly distinguished, they are expressed as fingers 42.
- the base 41 is formed in a U-shaped cross section (FIG. 5), and has a bottom wall 411 fixed to the hand adapter 36 and a pair of side walls 412 and 412 rising from the bottom wall 411.
- a housing 40 in which the components of the drive unit 43 are accommodated is fixed to one of the pair of side walls 412.
- Two parallel input shafts (input shaft 46 and driven system input shaft 47) for inputting power from the drive unit 43 to the finger 42 pass through the one side wall 422, and the two input shafts 46, 47 projects into the base 41.
- Each finger 42 is configured as a link mechanism including the Chebyshev link mechanism 5.
- the gripping claws 44 are supported by the base 41 via the link mechanism including the Chebyshev link mechanism 5.
- FIG. 9 is a diagram for explaining a general Chebyshev link mechanism 5 and its movement.
- the Chebyshev link mechanism 5 is a link mechanism that includes four nodes (links) of a driving node 51, a fixed node 50, a driven node 52, and an intermediate node 53.
- the base end portion of the driving node 51 is rotatably connected to the base end portion of the fixed node 50, and the base end portion of the driven node 52 is rotatably connected to the base end of the intermediate node 53.
- the tip of the driving node 51 is rotatably connected to the end, and the tip of the driven node 52 is rotatably connected to the intermediate part of the intermediate node 53.
- the movement trajectory 500 of the distal end of the intermediate joint 53 is a straight line that is substantially parallel to the fixed joint 50 in a certain plane while the prime mover 51 makes one rotation around the base end. It is a substantially D-shaped circumferential shape composed of a portion 501 and a curved portion 502 connecting the ends of the straight portion 501.
- the rotation angle of the standing driving link 51 is 0 degree and the counterclockwise rotation direction is a positive rotation direction
- the leading end of the intermediate link 53 corresponding to the rotation movement of the driving link 51 between 0 degrees and 180 degrees.
- the movement trajectory 500 of the part is the linear part 501 described above.
- the pair of fingers 42 is configured symmetrically about the center of the robot hand 1 (symmetrical in each sheet of FIGS. 2-4).
- the structure of one finger 42 will be described in detail, and the description of the structure of the other finger 42 will be omitted by representing the corresponding members with the same reference numerals.
- the finger 42 includes a driving node 51, a driven node 52, an intermediate node 53, a driven auxiliary node 54, an intermediate auxiliary node 55, an intermediate coupling node 56, and a tip end coupling node 57.
- the joints 51 to 57 and the base 41 functioning as a fixed joint constitute a link mechanism that connects the base 41 and the gripping claws 44.
- An adapter portion 57a is provided in the tip end joint node 57, and a gripping claw 44 is detachably fixed to the adapter portion 57a by a fastener or the like (not shown).
- the base end portion of the driving node 51 is fixed to the input shaft 46 (or the driven system input shaft 47), and rotates integrally with the input shaft 46 (or the driven system input shaft 47).
- the distal end portion of the driving node 51 is rotatably connected to the proximal end portion of the intermediate node 53 by the first joint shaft 71.
- the base end portion of the driven node 52 is fixed to a second joint shaft 72 that is rotatably supported by the pair of side walls 412 of the base 41.
- the distal end portion of the follower node 52 is rotatably connected to the longitudinal intermediate position of the intermediate node 53 by a third joint shaft 73.
- the distal end portion of the intermediate joint 53 is rotatably connected to the distal end joint joint 57 by a fourth joint shaft 74.
- the extension directions of the axes of the input shaft 46, the first joint shaft 71, the second joint shaft 72, the third joint shaft 73, and the fourth joint shaft 74 are parallel.
- the distance between the input shaft 46 and the first joint shaft 71 is “1”
- the distance between the input shaft 46 and the second joint shaft 72 is “2”
- the first joint shaft 71 and the third joint shaft 73 is “2.5”
- the distance between the third joint shaft 73 and the fourth joint shaft 74 is “2.
- the ratio of the lengths of the nodes is determined so as to be “5”.
- the distance between the axes strictly refers to the distance from the axis to the axis.
- the Chebyshev link mechanism 5 is configured by the driving node 51, the driven node 52, the intermediate node 53, and a part of the base 41 functioning as a fixed node.
- the movement range (movement trajectory) of the distal end portion of the intermediate joint 53 of the Chebyshev link mechanism 5 is the straight portion 501 (of the circumferential movement trajectory 500 (FIG. 9) that the Chebyshev link mechanism 5 can take as the Chebyshev link mechanism 5.
- the rotation range of the driving node 51 that is, the input shaft 46 or the driven input shaft 47
- the proximal end portion of the driven auxiliary node 54 is fixed to a fifth joint shaft 75 that is rotatably supported by the pair of side walls 412 of the base 41 between the input shaft 46 and the second joint shaft 72.
- the input shaft 46, the second joint shaft 72, and the fifth joint shaft 75 are arranged on substantially the same straight line.
- a straight line connecting the input shaft 46 and the second joint shaft 72 is referred to as a “reference line L” for convenience of explanation.
- the distal end portion of the driven auxiliary node 54 is rotatably connected to the intermediate coupling node 56 by a sixth joint shaft 76.
- the intermediate coupling node 56 is rotatably connected to the driven node 52 by the third joint shaft 73. As shown in FIG. 5, in the axial direction of the third joint shaft 73, an intermediate node 53 is disposed inside the driven node 52, and an intermediate coupling node 56 is disposed inside the intermediate node 53. Yes. In this way, the finger 42 is made compact.
- the distance between the second joint shaft 72 and the fifth joint shaft 75 and the distance between the third joint shaft 73 and the sixth joint shaft 76 are equal. Further, the distance between the second joint shaft 72 and the third joint shaft 73 is equal to the distance between the fifth joint shaft 75 and the sixth joint shaft 76. That is, the driven node 52, the driven auxiliary node 54, the intermediate coupling node 56, and a part of the base 41 constitute a base-side four-node parallel link mechanism 48.
- the base end portion of the intermediate auxiliary node 55 is rotatably connected to the intermediate coupling node 56 by a sixth joint shaft 76. Further, the distal end portion of the intermediate auxiliary node 55 is rotatably connected to the distal end coupling node 57 by a seventh joint shaft 77.
- the distance between the third joint shaft 73 and the sixth joint shaft 76 and the distance between the fourth joint shaft 74 and the seventh joint shaft 77 are equal. Further, the distance between the third joint shaft 73 and the fourth joint shaft 74 and the distance between the sixth joint shaft 76 and the seventh joint shaft 77 are equal. That is, the distal end side of the intermediate section 53, the intermediate auxiliary section 55, the intermediate coupling section 56, and the distal section coupling section 57 constitute the distal section side four-node parallel link mechanism 49.
- the drive unit 43 of the finger 42 includes a servo motor 81, an output gear 82 to which power from the servo motor 81 is transmitted, a driven gear 83 meshed with the output gear 82, and the servo motor 81.
- a speed reduction device 84 and a brake device 85 are provided on a power transmission path to the output gear 82.
- the servo motor 81 is disposed so that its output shaft 811 is substantially parallel to the two input shafts 46 and 47, and is supported by the housing 40.
- the servo motor 81 is provided with a detector 86 for detecting the rotational position and rotational speed of the servo motor 81.
- the detector 86 is, for example, a rotary encoder.
- the detector 86 is electrically connected to a controller 3 and a servo amplifier 97 described later by a detector cable 86a.
- a transmission shaft 90 rotatably supported by the housing 40 is provided on an extension line of the input shaft 46 of the housing 40.
- the input shaft 46 and the transmission shaft 90 are arranged on the same axis, and the extending directions of the shaft centers of the output shaft 811 and the transmission shaft 90 of the servo motor 81 are substantially parallel.
- a drive pulley 87 is fitted to the output shaft 811 of the servo motor 81, and a driven pulley 88 corresponding to the drive pulley 87 is fitted to the transmission shaft 90.
- An endless transmission belt 89 is wound around the drive pulley 87 and the driven pulley 88.
- the pulleys 87 and 88 and the transmission belt 89 form a belt type power transmission mechanism 8, and the output of the servo motor 81 is transmitted to the transmission shaft 90 by the power transmission mechanism 8.
- the transmission shaft 90 is provided with a brake device 85.
- the brake device 85 according to the present embodiment is an electromagnetic brake that operates by an electromagnetic force generated by energizing a coil, and the brake is activated when not energized and the brake is released when energized. Yes.
- the brake device 85 By such an operation of the brake device 85, the robot hand 1 continues to hold the workpiece even when the power supply to the robot hand 1 is cut off when the robot hand 1 (or multi-joint robot 10) is forcibly stopped. Can do.
- a speed reducer 84 is provided at the rear stage of the brake device 85. More specifically, a speed reducer 84 is provided between the transmission shaft 90 and the input shaft 46, that is, on a power transmission path from the transmission shaft 90 to the input shaft 46. The input part of the reduction gear 84 and the transmission shaft 90 are connected, and power is input from the transmission shaft 90 to the reduction gear 84. The output portion of the speed reducer 84 is connected to the output gear 82, and the rotational power decelerated by the speed reducer 84 is output from the output gear 82.
- the speed reducer 84 according to the present embodiment is a wave gear device including a wave generator connected to the transmission shaft 90, a flex spline connected to the output gear 82, and a circular spline fixed to the housing 40.
- the speed reducer 84, the brake device 85, and the servo motor 81 are arranged in parallel in the housing 40.
- a speed reduction device 84 and a brake device 85 are disposed between the axial lengths of the servo motor 81 including the servo motor 81 and the detector 86.
- the output gear 82 and the driven gear 83 are both supported by the housing 40 so as to be rotatable.
- the output gear 82 and the driven gear 83 are gears having the same shape, and the output gear 82 is integrally provided with the input shaft 46, and the driven gear 83 is integrally provided with the driven system input shaft 47. Yes.
- the driven gear 83 engaged therewith also rotates in the opposite direction by the same rotation angle as the output gear 82. That is, the input shaft 46 and the driven system input shaft 47 are synchronously rotated in the opposite directions by the same rotation angle.
- the fingertip of the finger 42 of the robot hand 1 and the pair of gripping claws 44 are synchronously moved in a direction away from each other or a direction close to each other.
- FIG. 7 is a diagram showing the configuration of the control system of the articulated robot 10. In this figure, the configuration of the control system particularly related to the control of the robot hand 1 is shown, and the others are omitted. As shown in FIG. 7, the controller 3 is connected to servo amplifiers 91 to 96 that supply drive currents to the servomotors 61 to 66 that rotationally drive the axes 21 to 26 of the robot body 2.
- the servo motors 61 to 66 are provided with detectors 61a to 66a such as encoders, for example, and the rotational positions of the servo motors 61 to 66 detected by the detectors 61a to 66a are determined by the controller 3 (or , And input to the controller 3 and the servo motors 61 to 66).
- the controller 3 is connected to a servo amplifier 97 that supplies a drive current to the servo motor 81 of the robot hand 1.
- the rotational position of the servo motor 81 detected by the detector 86 is input to the controller 3 (or the controller 3 and the servo motors 61 to 66).
- controller 3 is connected to a rotational position detector 98 that detects the rotational position of any one of the output gear 82, the driven gear 83, the input shaft 46, and the driven system input shaft 47. Based on the rotational position detected by the rotational position detector 98, the positions of the fingertips of the pair of fingers 42 and the pair of gripping claws 44 of the robot hand 1 can be estimated.
- the controller 3 is a so-called computer, and includes an arithmetic processing unit such as a CPU and a storage unit such as a ROM and a RAM (none of which are shown).
- the storage unit stores programs executed by the arithmetic processing unit, various fixed data, and the like.
- the arithmetic processing unit performs data transmission / reception with an external device.
- the arithmetic processing unit inputs detection signals from various sensors and outputs control signals to each control symmetry.
- processing for controlling the operation of the articulated robot 10 is performed by the arithmetic processing unit reading and executing software such as a program stored in the storage unit.
- the controller 3 may execute each process by centralized control by a single computer, or may execute each process by distributed control by cooperation of a plurality of computers.
- the controller 3 may be comprised from the microcontroller, the programmable logic controller (PLC), etc.
- the servo hand 91 to the servo amplifiers 91 to 66 are controlled based on the rotational positions detected by the detectors 61a to 66a so that the robot hand 1 moves to the target position according to the program.
- a control signal is output to 96.
- Each servo amplifier 91 to 96 supplies a drive current corresponding to the control signal to the servo motors 61 to 66. Further, according to the program, the fingertips of the fingers 42 are closed to bring the pair of gripping claws 44 close to grip the workpiece (FIG. 3), or the fingers 42 to release the workpiece by separating the pair of gripping claws 44 from each other.
- a control signal is output from the controller 3 to the servo amplifier 97 based on the rotational position detected by the detector 86 and the rotational position detector 98 so as to open the fingertip (FIG. 4).
- the servo amplifier 97 supplies a drive current corresponding to the control signal to the servo motor 81.
- the controller 3 controls the pair of fingers 42 in the same manner as the robot arm 20 so that the controller 3 follows the target value using the positions, orientations, orientations, and the like of the pair of fingers 42 as control amounts (that is, , Servo control).
- the robot hand 1 includes the base 41, the gripping claws 44, the Chebyshev link mechanism 5 that connects the base 41 and the gripping claws 44, and the housing 40 fixed to the base 41.
- the power transmission mechanism 8 that transmits power from the power transmission shaft 90 to the transmission shaft 90 and the speed reduction device 84 provided between the transmission shaft 90 and the input shaft 46 are provided.
- the input shaft 46 and the transmission shaft 90 are rotatably supported by the housing 40, and the servo motor 81 is supported by the housing 40.
- FIG. 8A shows the robot hand 1 according to the present embodiment
- FIG. 8B shows a robot hand 101 according to a comparative example in which a servo motor 81, a speed reducer 84, and a brake device 85 are coaxially arranged in series. It is shown. As apparent from a comparison between FIG. 8A and FIG.
- the housing 40 ′ of the robot hand 101 according to the comparative example in which the servo motor 81 and the speed reducer 84 are arranged in series is the robot hand according to the present embodiment. It is longer than the one housing 40 by ⁇ H corresponding to the axial length of the servo motor 81.
- the size of the housing 40 in which the drive unit 43 of the finger 42 is accommodated in particular, the axial direction of the servo motor 81).
- the size in the parallel direction can be reduced.
- the robot hand 1 is provided with the fingers 42 configured by the Chebyshev link mechanism 5 in a miniaturized manner. As described above, the drive unit 43 and the housing 40 thereof can be miniaturized. Further downsizing of the whole 1 can be realized.
- the robot hand 1 of the present embodiment includes a driven gripping claw 44 that is paired with the aforementioned primary gripping claw 44 and a driven Chebyshev link mechanism that connects the driven gripping claw 44 and the base 41. 5, a driven input shaft 47 of the driven system parallel to the input shaft 46 that inputs power to the driven Chebyshev link mechanism 5, and a gear mechanism that transmits the power from the input shaft 46 to the driven input shaft 47 of the driven system (Output gear 82 and driven gear 83).
- the robot hand 1 of the present embodiment further includes a brake device 85 provided on the transmission shaft 90.
- the transmission shaft 90 is provided in parallel with the output shaft 811 of the servo motor 81, and the speed reducer 84 and the brake device 85 are arranged coaxially with the transmission shaft 90.
- the reduction gear 84 and the brake device 85 can be arranged in parallel. Therefore, compared with the robot hand 101 (FIG. 8B) according to the comparative example, the size of the housing 40 that accommodates the drive unit 43 of the finger 42 (particularly, the size in the direction parallel to the axial direction of the servo motor 81) is increased. Can be small.
- the Chebyshev link mechanism 5 has a driving node 51 whose base end is fixed to the input shaft 46 (or the driven system input shaft 47) and a base end that rotates to the base 41.
- the follower node 52 is supported, and the intermediate portion 53 is connected to the distal end portion of the driven node 51 at the base end portion and is connected to the distal end portion of the follower node 52 at the intermediate portion.
- This robot hand 1 includes a driven node 52 and a driven auxiliary node 54 whose base end portion is rotatably supported by the base 41 for constituting the four-node parallel link mechanism 48, and the distal end of the driven node 52.
- the robot hand 1 further includes an intermediate auxiliary node 55 having a base end portion connected to the intermediate coupling node 56 to form a four-node parallel link mechanism 49 including an intermediate node 53 and an intermediate coupling node 56, and A tip end joint 57 that connects the tip of the intermediate joint 53 and the tip of the intermediate auxiliary joint 55 is provided.
- a gripping claw 44 is fixed to the distal end joint node 57.
- the straight portion 501 (FIG. 9) of the circumferential movement locus 500 (FIG. 9) that can be taken by the tip of the intermediate node 53 of the Chebyshev link mechanism 5 is the intermediate node 53.
- the driving node 51 that is, the input shaft 46 or the driven input shaft 47
- the tip of the intermediate node 53 (that is, the fingertip of the finger 42) moves while keeping the distance from the reference line L constant by the operation of the Chebyshev link mechanism 5.
- the tip joint portion 57 positioned at the fingertip of the finger 42 and the gripping claw 44 fixed thereto. Moves parallel to the reference line L.
- the gripping claws 44 can move in parallel with the reference line L while keeping the distance from the reference line L constant.
- the configuration of the robot hand 1 can be changed as follows, for example.
- the input shaft 46 and the driven system input shaft 47 are supported by the housing 40, but may be supported by at least one of the base 41 and the housing 40.
- the power transmission mechanism 8 that transmits power from the output shaft 811 to the transmission shaft 90 is a belt-type power transmission mechanism, but the power transmission mechanism 8 is not limited to this.
- a chain-type power transmission mechanism including a chain may be used.
- the servo motor 81 and the brake device 85 are provided separately.
- a servo motor with a brake function having these functions may be employed instead of the servo motor 81.
- the brake device 85 on the transmission shaft 90 is omitted.
- a gear mechanism including an output gear 82 and a driven gear 83 meshing with the output gear 82B is operated in synchronization with the movement of the primary finger 42A.
- the output gear 82 and the driven gear 83 are directly meshed with each other in order to reduce the synchronization error between the primary finger 42A and the driven finger 42B.
- At least one or more gears may be interposed between the terminal 83 and 83.
- a power intermittent switching mechanism such as a clutch may be interposed between the output gear 82 and the driven gear 83 or between the driven gear 83 and the driven system input shaft 47.
- the robot hand 1 includes one main finger 42A and one driven finger 42B, one or more driven fingers 42B can be increased.
- a robot hand 1 having three fingers 42 by adding one follower finger 42B may be used.
- the drive system input shaft 47 is also added corresponding to the number of fingers 42, and the drive unit 43 is configured to mesh the drive gear 83 and the output gear 82 provided integrally with the drive system input shaft 47. Is configured.
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
Abstract
Description
2 ロボット本体
3 コントローラ
5 チェビシェフリンク機構
8 動力伝達機構
10 多関節ロボット
20 ロボットアーム
40 ハウジング
41 ベース
42 フィンガ
(42A 主動系のフィンガ)
(42B 従動系のフィンガ)
43 駆動部
44 把持爪
46 (主動系の)入力軸
47 (従動系の)入力軸
48,49 四節平行リンク機構
50 固定節
51 原動節
52 従動節
53 中間節
54 従動補助節
55 中間補助節
56 中間結合節
57 先端部結合節
61~66 サーボモータ
81 サーボモータ
811 出力軸
82 出力歯車
83 出力歯車
84 減速装置
85 ブレーキ装置
86 検出器
90 伝動軸
91~97 サーボアンプ
98 回転位置検出器
Claims (6)
- ベースと、
把持爪と、
前記ベースと前記把持爪とを連結するチェビシェフリンク機構と、
前記ベースに固定されたハウジングと、
前記ベース及び前記ハウジングの少なくとも一方に回動可能に支持され、前記チェビシェフリンク機構へ動力を入力する入力軸と、
前記入力軸と平行な出力軸を有し、前記ハウジングに支持されたモータと、
前記入力軸と同軸上に配設され、前記ハウジングに回動可能に支持された伝動軸と、
前記出力軸から前記伝動軸へ動力を伝達する動力伝達機構と、
前記伝動軸と前記入力軸との間に設けられた減速装置と、
を備えるロボットハンド。 - 前記把持爪と対を成す従動系の把持爪と、
前記従動系の把持爪と前記ベースとを連結する従動系のチェビシェフリンク機構と、
前記従動系のチェビシェフリンク機構へ動力を入力する、前記入力軸と平行な従動系の入力軸と、
前記入力軸から前記従動系の入力軸へ動力を伝達するギア機構と、
を更に備える、請求項1に記載のロボットハンド。 - 前記伝動軸上に設けられたブレーキ装置を更に備える、請求項1又は2に記載のロボットハンド。
- 前記チェビシェフリンク機構が、基端部が前記入力軸に固定された原動節と、基端部が前記ベースに回動可能に支持された従動節と、基端部が前記原動節の先端部と連結され、中間部が前記従動節の先端部と連結された中間節とを有し、
前記従動節を含んで四節平行リンク機構を構成するための、基端部が前記ベースに回動可能に支持された従動補助節、及び、前記従動節の先端部と前記従動補助節の先端部とを連結する中間結合節と、
前記中間節及び前記中間結合節を含んで四節平行リンク機構を構成するための、基端部が前記中間結合節と連結された中間補助節、及び、前記中間節の先端部と前記中間補助節の先端部とを連結する先端部結合節と、を更に備え、
前記先端部結合節に前記把持爪が固定されている、請求項1~3のいずれか一項に記載のロボットハンド。 - 前記チェビシェフリンク機構が、基端部が前記入力軸に固定された原動節と、基端部が前記ベースに回動可能に支持された従動節と、基端部が前記原動節の先端部と連結され、中間部が前記従動節の先端部と連結された中間節とを有し、
前記中間節の先端部が取り得る周状の移動軌跡のうちの直線部が前記中間節の先端部の移動範囲となるような所定角度範囲内で前記入力軸が回転する、請求項1~4のいずれか一項に記載のロボットハンド。 - ロボットアームを有するロボット本体と、
前記ロボットアームの先端部に取り付けられた、請求項1~5のいずれか一項に記載のロボットハンドと、
前記ロボットアーム及び前記ロボットハンドの動作を制御するコントローラと、
を備える、ロボット。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2014/005363 WO2016063314A1 (ja) | 2014-10-22 | 2014-10-22 | ロボットハンド及びロボット |
| JP2016554947A JP6499669B2 (ja) | 2014-10-22 | 2014-10-22 | ロボットハンド及びロボット |
| KR1020177007727A KR101964253B1 (ko) | 2014-10-22 | 2014-10-22 | 로봇 핸드 및 로봇 |
| CN201480082825.0A CN107073720B (zh) | 2014-10-22 | 2014-10-22 | 机械手手部以及机械手 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2014/005363 WO2016063314A1 (ja) | 2014-10-22 | 2014-10-22 | ロボットハンド及びロボット |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016063314A1 true WO2016063314A1 (ja) | 2016-04-28 |
Family
ID=55760390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2014/005363 Ceased WO2016063314A1 (ja) | 2014-10-22 | 2014-10-22 | ロボットハンド及びロボット |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6499669B2 (ja) |
| KR (1) | KR101964253B1 (ja) |
| CN (1) | CN107073720B (ja) |
| WO (1) | WO2016063314A1 (ja) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106272502A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 四杆四轮直线平夹自适应机器人手指装置 |
| CN106272496A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 并联带轮连杆直线平夹自适应手指装置 |
| CN106272494A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 滑槽肘节连杆直线平夹自适应机器人手指装置 |
| CN106272503A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 双簧件曲柄滑轴直线平夹自适应机器人手指装置 |
| CN106272501A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 肘节滑杆自适应机器人手指装置 |
| CN106272495A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 近程轮系传动导套摆杆直线平夹自适应手指装置 |
| CN106363651A (zh) * | 2016-08-31 | 2017-02-01 | 清华大学 | 支撑轮系定轴滑套直线耦合自适应机器人手指装置 |
| CN106514684A (zh) * | 2016-08-31 | 2017-03-22 | 清华大学 | 连杆行星轮直线耦合自适应机器人手指装置 |
| CN106564065A (zh) * | 2016-08-31 | 2017-04-19 | 清华大学 | 人字连杆齿条滑块直线平夹自适应手指装置 |
| CN107053253A (zh) * | 2017-05-04 | 2017-08-18 | 西安航空学院 | 超冗余机械手 |
| CN106346499B (zh) * | 2016-08-31 | 2018-07-24 | 清华大学 | 曲柄摇杆动轴轮系直线平夹自适应手指装置 |
| CN108972603A (zh) * | 2018-08-15 | 2018-12-11 | 清华大学 | 滑动基座补偿式直线平夹自适应机器人手指装置 |
| EP3530413A1 (en) * | 2018-02-27 | 2019-08-28 | Innfos Drive (Beijing) Technologies Co., Ltd. | Actuator, robot arm and robot |
| US10471602B2 (en) | 2017-12-11 | 2019-11-12 | Samsung Electronics Co., Ltd. | Magazine transfer unit gripper |
| IT201900005564A1 (it) * | 2019-04-10 | 2020-10-10 | Qbrobotics S R L | Mano robotica |
| IT201900005562A1 (it) * | 2019-04-10 | 2020-10-10 | Qbrobotics S R L | Mano robotica |
| WO2020208463A1 (en) * | 2019-04-10 | 2020-10-15 | Qbrobotics S.R.L. | A robotic hand |
| CN112405496A (zh) * | 2019-08-21 | 2021-02-26 | 住友重机械工业株式会社 | 机械手 |
| JP2021133444A (ja) * | 2020-02-25 | 2021-09-13 | 株式会社不二越 | ロボットハンドおよび把持システム |
| WO2022139305A1 (ko) | 2020-12-24 | 2022-06-30 | 삼성전자주식회사 | 로봇 핸드 |
| WO2025022759A1 (ja) * | 2023-07-27 | 2025-01-30 | 川崎重工業株式会社 | ロボットリスト |
| US12420433B2 (en) | 2020-12-24 | 2025-09-23 | Samsung Electronics Co., Ltd. | Robot hand |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7156865B2 (ja) * | 2018-08-30 | 2022-10-19 | 川崎重工業株式会社 | 緩衝装置及びそれを備えるロボット |
| CN112672861B (zh) * | 2019-03-22 | 2024-06-04 | 欧姆龙株式会社 | 机械手、机械手控制方法及程序 |
| CN112644598B (zh) * | 2020-12-31 | 2022-03-29 | 郑州大学 | 行走机械装置 |
| KR102458371B1 (ko) * | 2021-07-29 | 2022-10-24 | 서승구 | 다관절 로봇용 그립장치 |
| CN115781745B (zh) * | 2022-11-17 | 2025-09-16 | 南方科技大学 | 机械手 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5037156A (ja) * | 1973-08-10 | 1975-04-07 | ||
| JPS6263093A (ja) * | 1985-09-12 | 1987-03-19 | 芝浦メカトロニクス株式会社 | ワ−ク検出方法 |
| JP2007298114A (ja) * | 2006-04-28 | 2007-11-15 | Sony Corp | 駆動装置及び関節装置 |
| WO2010007795A1 (ja) * | 2008-07-17 | 2010-01-21 | 川崎重工業株式会社 | ロボットハンド |
| JP2010131703A (ja) * | 2008-12-04 | 2010-06-17 | Kawasaki Heavy Ind Ltd | ロボットハンド |
| JP2012125877A (ja) * | 2010-12-15 | 2012-07-05 | Toyota Motor Corp | ロボットハンドの挟み込み軽減機構及びロボットハンド |
| JP2013121633A (ja) * | 2011-12-12 | 2013-06-20 | Toyota Industries Corp | ロボットハンド装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969543Y (zh) * | 2006-10-08 | 2007-10-31 | 东莞市博思电子数码科技有限公司 | 一种微型马达结构 |
| DE102007016436A1 (de) * | 2007-04-05 | 2008-10-09 | Festo Ag & Co. Kg | Elektrisch betätigbare Greifvorrichtung |
| JP5243233B2 (ja) * | 2008-12-26 | 2013-07-24 | 川崎重工業株式会社 | ロボットハンド |
| EP2380713B1 (en) * | 2008-12-04 | 2015-05-20 | Kawasaki Jukogyo Kabushiki Kaisha | Robot hand |
| CN103395067B (zh) * | 2013-07-31 | 2016-01-13 | 北京航空航天大学 | 一种空间在轨服务机器人的自适应指爪机构 |
-
2014
- 2014-10-22 WO PCT/JP2014/005363 patent/WO2016063314A1/ja not_active Ceased
- 2014-10-22 JP JP2016554947A patent/JP6499669B2/ja active Active
- 2014-10-22 KR KR1020177007727A patent/KR101964253B1/ko active Active
- 2014-10-22 CN CN201480082825.0A patent/CN107073720B/zh active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5037156A (ja) * | 1973-08-10 | 1975-04-07 | ||
| JPS6263093A (ja) * | 1985-09-12 | 1987-03-19 | 芝浦メカトロニクス株式会社 | ワ−ク検出方法 |
| JP2007298114A (ja) * | 2006-04-28 | 2007-11-15 | Sony Corp | 駆動装置及び関節装置 |
| WO2010007795A1 (ja) * | 2008-07-17 | 2010-01-21 | 川崎重工業株式会社 | ロボットハンド |
| JP2010131703A (ja) * | 2008-12-04 | 2010-06-17 | Kawasaki Heavy Ind Ltd | ロボットハンド |
| JP2012125877A (ja) * | 2010-12-15 | 2012-07-05 | Toyota Motor Corp | ロボットハンドの挟み込み軽減機構及びロボットハンド |
| JP2013121633A (ja) * | 2011-12-12 | 2013-06-20 | Toyota Industries Corp | ロボットハンド装置 |
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106363651A (zh) * | 2016-08-31 | 2017-02-01 | 清华大学 | 支撑轮系定轴滑套直线耦合自适应机器人手指装置 |
| CN106346499B (zh) * | 2016-08-31 | 2018-07-24 | 清华大学 | 曲柄摇杆动轴轮系直线平夹自适应手指装置 |
| CN106272494A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 滑槽肘节连杆直线平夹自适应机器人手指装置 |
| CN106272503A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 双簧件曲柄滑轴直线平夹自适应机器人手指装置 |
| CN106272501A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 肘节滑杆自适应机器人手指装置 |
| CN106272495A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 近程轮系传动导套摆杆直线平夹自适应手指装置 |
| CN106272496A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 并联带轮连杆直线平夹自适应手指装置 |
| CN106564065A (zh) * | 2016-08-31 | 2017-04-19 | 清华大学 | 人字连杆齿条滑块直线平夹自适应手指装置 |
| CN106272502A (zh) * | 2016-08-31 | 2017-01-04 | 清华大学 | 四杆四轮直线平夹自适应机器人手指装置 |
| CN106363651B (zh) * | 2016-08-31 | 2019-04-02 | 清华大学 | 支撑轮系定轴滑套直线耦合自适应机器人手指装置 |
| CN106514684A (zh) * | 2016-08-31 | 2017-03-22 | 清华大学 | 连杆行星轮直线耦合自适应机器人手指装置 |
| CN106514684B (zh) * | 2016-08-31 | 2019-01-18 | 清华大学 | 连杆行星轮直线耦合自适应机器人手指装置 |
| CN107053253B (zh) * | 2017-05-04 | 2023-04-11 | 西安航空学院 | 超冗余机械手 |
| CN107053253A (zh) * | 2017-05-04 | 2017-08-18 | 西安航空学院 | 超冗余机械手 |
| US10471602B2 (en) | 2017-12-11 | 2019-11-12 | Samsung Electronics Co., Ltd. | Magazine transfer unit gripper |
| EP3530413A1 (en) * | 2018-02-27 | 2019-08-28 | Innfos Drive (Beijing) Technologies Co., Ltd. | Actuator, robot arm and robot |
| EP3530414A1 (en) * | 2018-02-27 | 2019-08-28 | Innfos Drive (Beijing) Technologies Co., Ltd. | Actuator, robot arm and robot |
| US11235477B2 (en) | 2018-02-27 | 2022-02-01 | Cloudminds Robotics Co., Ltd. | Actuator, robot arm and robot |
| US10889011B2 (en) | 2018-02-27 | 2021-01-12 | Innfos Drive (Beijing) Technologies Co., Ltd. | Actuator, robot arm and robot |
| CN108972603B (zh) * | 2018-08-15 | 2021-11-02 | 清华大学 | 滑动基座补偿式直线平夹自适应机器人手指装置 |
| CN108972603A (zh) * | 2018-08-15 | 2018-12-11 | 清华大学 | 滑动基座补偿式直线平夹自适应机器人手指装置 |
| JP2022527659A (ja) * | 2019-04-10 | 2022-06-02 | キュービーロボティックス エス.アール.エル. | ロボットハンド |
| WO2020208463A1 (en) * | 2019-04-10 | 2020-10-15 | Qbrobotics S.R.L. | A robotic hand |
| IT201900005562A1 (it) * | 2019-04-10 | 2020-10-10 | Qbrobotics S R L | Mano robotica |
| IT201900005564A1 (it) * | 2019-04-10 | 2020-10-10 | Qbrobotics S R L | Mano robotica |
| CN112405496A (zh) * | 2019-08-21 | 2021-02-26 | 住友重机械工业株式会社 | 机械手 |
| JP2021133444A (ja) * | 2020-02-25 | 2021-09-13 | 株式会社不二越 | ロボットハンドおよび把持システム |
| WO2022139305A1 (ko) | 2020-12-24 | 2022-06-30 | 삼성전자주식회사 | 로봇 핸드 |
| US12420433B2 (en) | 2020-12-24 | 2025-09-23 | Samsung Electronics Co., Ltd. | Robot hand |
| WO2025022759A1 (ja) * | 2023-07-27 | 2025-01-30 | 川崎重工業株式会社 | ロボットリスト |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6499669B2 (ja) | 2019-04-10 |
| KR101964253B1 (ko) | 2019-04-01 |
| CN107073720B (zh) | 2019-10-15 |
| KR20170044179A (ko) | 2017-04-24 |
| CN107073720A (zh) | 2017-08-18 |
| JPWO2016063314A1 (ja) | 2017-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6499669B2 (ja) | ロボットハンド及びロボット | |
| US9643323B2 (en) | Robot hand | |
| CN109476023B (zh) | 可变刚度串联式弹性致动器 | |
| KR101469493B1 (ko) | 차동 기어 특성을 이용한 로봇 핑거 구동 모듈 및 이를 포함하는 로봇 핸드 | |
| US8814241B2 (en) | Robot hand | |
| EP2732937A1 (en) | Robotic hand and robot | |
| JP5729288B2 (ja) | ロボットハンド装置 | |
| TWI633986B (zh) | 機械手 | |
| KR101639723B1 (ko) | 로봇 핸드 | |
| US8776632B2 (en) | Low-stroke actuation for a serial robot | |
| JP6127315B2 (ja) | ハンド装置及び指 | |
| JP6277672B2 (ja) | ロボット | |
| KR101454779B1 (ko) | 백래쉬와 제어 특성을 개선한 그리퍼 | |
| JP5423910B1 (ja) | ロボット | |
| US9987756B2 (en) | Hand device, robot arm, and robot | |
| JP6687928B2 (ja) | 関節駆動装置及び多軸マニュピレータ | |
| JP2021133444A (ja) | ロボットハンドおよび把持システム | |
| Fumagalli et al. | Analysis of an underactuated robotic finger with variable pinch and closure grasp stiffness | |
| JP4469957B2 (ja) | ロボットハンド | |
| KR102782209B1 (ko) | 웨어러블 로봇용 케이블 구동 회전 관절 장치 | |
| CN120206551B (zh) | 一种欠驱-全驱双模式机器人多指灵巧手 | |
| Teng et al. | Mechanical design and kinematic analysis of a 10 DOF robot manipulator | |
| JP2024054618A (ja) | ロボットハンド、ロボットハンドの制御方法、ロボットシステム、ロボットシステムを用いた物品の製造方法、制御プログラム及び記録媒体 | |
| KR20250039578A (ko) | 3지 로봇 그리퍼 | |
| Kubat et al. | Low-cost impedance controlled multifinger gripper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14904572 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2016554947 Country of ref document: JP Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 20177007727 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 14904572 Country of ref document: EP Kind code of ref document: A1 |