WO2023149072A1 - 基板搬送ロボット - Google Patents
基板搬送ロボット Download PDFInfo
- Publication number
- WO2023149072A1 WO2023149072A1 PCT/JP2022/045059 JP2022045059W WO2023149072A1 WO 2023149072 A1 WO2023149072 A1 WO 2023149072A1 JP 2022045059 W JP2022045059 W JP 2022045059W WO 2023149072 A1 WO2023149072 A1 WO 2023149072A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- arm
- substrate holding
- holding hand
- substrate
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J11/00—Manipulators not otherwise provided for
- B25J11/0095—Manipulators transporting wafers
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- H10P72/3302—
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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
- B25J15/0014—Gripping heads and other end effectors having fork, comb or plate shaped means for engaging the lower surface on a object to be transported
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J17/00—Joints
- B25J17/02—Wrist joints
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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
- B25J9/02—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type
- B25J9/04—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. cylindrical coordinate type or polar coordinate type
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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
- B25J9/02—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type
- B25J9/04—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. cylindrical coordinate type or polar coordinate type
- B25J9/041—Cylindrical coordinate type
- B25J9/042—Cylindrical coordinate type comprising an articulated arm
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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
- B25J9/02—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type
- B25J9/04—Programme-controlled manipulators characterised by movement of the arms, e.g. cartesian coordinate type by rotating at least one arm, excluding the head movement itself, e.g. cylindrical coordinate type or polar coordinate type
- B25J9/041—Cylindrical coordinate type
- B25J9/042—Cylindrical coordinate type comprising an articulated arm
- B25J9/043—Cylindrical coordinate type comprising an articulated arm double selective compliance articulated robot arms [SCARA]
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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
- B25J9/06—Programme-controlled manipulators characterised by multi-articulated arms
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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
- B25J9/108—Bearings specially adapted therefor
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- H10P72/30—
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- H10P72/3311—
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- H10P72/7602—
Definitions
- This disclosure relates to a substrate transfer robot.
- a substrate transport robot equipped with a robot arm is known.
- Such a substrate transport robot is disclosed in Japanese Patent No. 6271266, for example.
- Japanese Patent No. 6271266 discloses a horizontal articulated robot for transporting objects such as glass substrates.
- This robot includes an arm and a hand rotatably connected to the tip side of the arm.
- a connecting portion between the arm and the hand is a joint portion.
- a speed reducer and a bearing for rotating the hand are arranged in the joint.
- This bearing is a cross roller bearing.
- the rollers are cross roller bearings
- the rollers made of cylindrical rollers may be biased.
- the bias of the rollers varies with each repetitive motion, and the friction of the bearings varies due to the variation in the bias of the rollers.
- the amount of rotation of the joint portion also fluctuates due to the fluctuation of the friction of the bearing. Therefore, the position of the repetitive motion of the robot fluctuates due to the fluctuation of the amount of rotation of the joint portion. Therefore, when cross roller bearings are used as bearings, there is a problem that it is difficult to improve the repeatability of positioning.
- This disclosure has been made to solve the problems described above, and aims to provide a substrate transport robot capable of increasing the repeatability of positioning.
- a substrate transport robot includes a horizontal articulated robot arm and a substrate holding hand arranged at the tip of the robot arm, the substrate holding hand comprising a first substrate holding hand;
- a second substrate holding hand is disposed above the first substrate holding hand and operates independently of the first substrate holding hand, and the robot arm drives the first substrate holding hand and the second substrate holding hand.
- the wrist joint includes a first bearing that rotatably supports a first rotation shaft that rotates the first substrate holding hand, and a second rotation shaft that rotates the second substrate holding hand. and a second bearing that rotatably supports the shaft, wherein the first bearing and the second bearing are ball bearings.
- the substrate transfer robot configures the first bearing and the second bearing to be ball bearings, as described above.
- spherical balls can be used as rolling elements instead of rollers made of cylindrical rollers.
- a substrate transport robot includes a horizontal articulated robot arm and a substrate holding hand disposed at the tip of the robot arm. is connected to the first arm and the other end is connected to the substrate holding hand; and an arm joint for driving the second arm.
- 2 has an arm rotation shaft bearing that rotatably supports an arm rotation shaft that rotates the arm, and the arm rotation shaft bearing is arranged between the first arm and the second arm in the height direction. It is arranged so as to straddle the part.
- the arm rotation shaft bearing is arranged so as to straddle the first arm and the second arm in the height direction.
- the height of the arm rotation bearing is large enough to accommodate the entire arm rotation bearing in the first arm or the second arm. Since it is no longer necessary, it is possible to prevent the first arm portion or the second arm portion from increasing in size in the height direction. As a result, it is possible to prevent the substrate transport robot from increasing in size in the height direction.
- FIG. 1 is a diagram showing an outline of a configuration of a substrate transport robot according to a first embodiment
- FIG. 1 is a cross-sectional view showing the configuration of a substrate transport robot according to a first embodiment
- FIG. 3 is a partially enlarged view showing the configuration around the first arm of FIG. 2
- FIG. FIG. 3 is a partially enlarged view showing a configuration around a second arm in FIG. 2
- FIG. 5 is a cross-sectional view showing the configuration of a substrate transport robot according to a second embodiment
- the substrate transport robot 100 is a robot that transports substrates W.
- a substrate transport robot 100 is arranged in a clean room 200 .
- the substrate transport robot 100 is arranged in a vacuum environment. Specifically, the substrate transport robot 100 is arranged inside a vacuum chamber 201 .
- the substrate transport robot 100 includes a robot arm 10, a substrate holding hand 20 arranged at the tip of the robot arm 10, and a base portion 30.
- the substrate holding hand 20 holds the substrate W.
- the substrate W is, for example, a semiconductor wafer.
- a semiconductor wafer undergoes a predetermined process in a process chamber 202 .
- the substrate transfer robot 100 performs a repeated operation of repeatedly transferring semiconductor wafers to the processing chamber 202 .
- the substrate holding hand 20 includes a first substrate holding hand 21 and a second substrate holding hand 22 arranged above the first substrate holding hand 21 and operating separately from the first substrate holding hand 21 .
- the robot arm 10 is a horizontal articulated robot arm.
- the robot arm 10 includes a first arm portion 11 and a second arm portion 12 .
- the robot arm 10 also includes a shoulder joint JT1, an elbow joint JT2, and a wrist joint JT3.
- One end of the first arm portion 11 is connected to the base portion 30 via a shoulder joint JT1.
- One end of the second arm portion 12 is connected to the other end of the first arm portion 11 via an elbow joint JT2.
- a first substrate holding hand 21 and a second substrate holding hand 22 are connected to the other end of the second arm portion 12 via a wrist joint JT3.
- the shoulder joint JT1 is an example of a first joint.
- the elbow joint JT2 is an example of the second joint and the arm joint.
- the shoulder joint JT1 is provided to drive the first arm section 11. Specifically, the shoulder joint JT1 rotates the first arm portion 11 with respect to the base portion 30 around the first rotation axis A1 extending in the vertical direction.
- the elbow joint JT2 is provided to drive the second arm portion 12. As shown in FIG. Specifically, the elbow joint JT2 rotates the second arm portion 12 with respect to the first arm portion 11 around the second rotation axis A2 extending in the vertical direction.
- the wrist joint JT3 is provided to drive the first substrate holding hand 21 and the second substrate holding hand 22. As shown in FIG. Specifically, the wrist joint JT3 rotates the first substrate holding hand 21 and the second substrate holding hand 22 with respect to the second arm portion 12 about the third rotation axis A3 extending in the vertical direction.
- the wrist joint JT3 can rotate the first board holding hand 21 and the second board holding hand 22 separately. Details of the shoulder joint JT1, the elbow joint JT2, and the wrist joint JT3 will be described later.
- the base portion 30 includes an elevating mechanism 31 for elevating the robot arm 10.
- the lifting mechanism 31 has a motor 311 , a belt pulley mechanism 312 , a ball screw mechanism 313 and a torque tube 314 .
- a motor 311 is a drive source for elevation. Motor 311 is connected to ball screw mechanism 313 via belt pulley mechanism 312 .
- the ball screw mechanism 313 is connected to the torque tube 314 and moves the torque tube 314 up and down by driving force from the motor 311 .
- the torque tube 314 is connected to one end of the first arm portion 11 of the robot arm 10 , and moves the robot arm 10 up and down via the first arm portion 11 by driving force from the ball screw mechanism 313 .
- the wrist joint JT3 is a first bearing that rotatably supports the first rotation shaft 41 that rotates the first substrate holding hand 21. 42 and a second bearing 44 that rotatably supports a second rotating shaft 43 that rotates the second substrate holding hand 22 .
- the first bearing 42 and the second bearing 44 are ball bearings.
- the first bearing 42 and the second bearing 44 are angular contact ball bearings, and two of each are provided.
- Each of the first bearing 42 and the second bearing 44 has balls as rolling elements, a retainer that holds the balls, an outer ring, and an inner ring. The balls are evenly arranged by being held by the retainer.
- the second rotating shaft 43 is arranged radially inward of the first rotating shaft 41 and extends above the first rotating shaft 41 .
- the two second bearings 44 are arranged above and below the second rotating shaft 43, respectively.
- the two second bearings 44 are spaced apart in the Z direction, which is the height direction.
- the upper second bearing 44 receives one axial load
- the lower second bearing 44 receives the other axial load.
- the upper second bearing 44 is arranged between the housing portion 211 of the first substrate holding hand 21 and the second rotating shaft 43 in the radial direction.
- the lower second bearing 44 is arranged between the first rotating shaft 41 and the second rotating shaft 43 in the radial direction.
- the two first bearings 42 are arranged on the first rotation shaft 41 between the two second bearings 44 .
- the two first bearings 42 are arranged adjacent to each other in the Z direction, which is the height direction.
- the upper first bearing 42 receives one axial load
- the lower first bearing 42 receives the other axial load.
- the two first bearings 42 are arranged between the housing portion 121 of the second arm portion 12 and the first rotation shaft 41 in the radial direction.
- the second bearing 44 arranged below the second rotating shaft 43 is smaller in size than the second bearing 44 arranged above the second rotating shaft 43 .
- the second bearing 44 arranged below the second rotation shaft 43 is larger in size in the height direction and radial direction than the second bearing 44 arranged above the second rotation shaft 43 . is small.
- the second rotating shaft 43 is formed such that the portion where the upper second bearing 44 is arranged has a larger diameter than the portion where the lower second bearing 44 is arranged.
- the portion of the second rotating shaft 43 that is arranged above the first rotating shaft 41 is formed to have a larger diameter than the portion that overlaps the first rotating shaft 41 in the radial direction. It is Note that the two first bearings 42 have the same size.
- the hand drive mechanism 50 is provided at the wrist joint JT3.
- the hand driving mechanism 50 and the first bearing 42 are arranged so as to overlap each other in the Y direction, which is the horizontal direction.
- the hand drive mechanism 50 and the lower first bearing 42 of the two first bearings 42 are arranged so as to overlap in the Y direction, which is the horizontal direction.
- the Y direction is also the longitudinal direction of the second arm portion 12 .
- Two hand driving mechanisms 50 are provided so as to correspond to the first substrate holding hand 21 and the second substrate holding hand 22 . 2 and 3, for convenience, one of the two hand driving mechanisms 50 is shown as a whole, and the other of the two hand driving mechanisms 50 is only a part of a gear 521, which will be described later. is illustrated.
- the two hand drive mechanisms 50 basically have the same configuration except that the hands to be driven are different. Therefore, one of the two hand drive mechanisms 50 will be described in detail.
- the hand drive mechanism 50 includes a motor 51 and a power transmission section 52.
- a motor 51 is a drive source for driving the second substrate holding hand 22 .
- the power transmission portion 52 transmits the driving force from the motor 51 to the second rotating shaft 43 .
- the power transmission unit 52 has multiple gears including a gear 521 .
- the output side of the gear 521 is connected to the gear 53 arranged coaxially with the second rotating shaft 43 .
- the gear 53 is fastened and fixed to the second rotating shaft 43 so as to rotate together with the second rotating shaft 43 . When the gear 53 rotates, the second rotating shaft 43 rotates.
- the output side of the gear 521 is connected to a gear portion 411 integrally formed with the lower portion of the first rotating shaft 41 .
- the gear portion 411 is rotated, the first rotating shaft 41 is rotated.
- the second arm portion 12 has a thin housing portion 122 arranged below the hand drive mechanism 50 and the wrist joint JT3. As a result, since the hand drive mechanism 50 and the wrist joint JT3 can be shifted downward, the first substrate holding hand 21 and the second substrate holding hand 22 can be shifted downward. As a result, it is possible to prevent the substrate transport robot 100 from increasing in size in the height direction.
- the second arm portion 12 has a housing portion 122 and a housing portion 123 connected to the housing portion 122 and arranged closer to the first arm portion 11 than the housing portion 122 is.
- the housing portion 122 is formed to be thinner than the housing portion 123 in the Z direction, which is the height direction.
- the shoulder joint JT1 includes a third bearing 62 that rotatably supports the third rotating shaft 61 that rotates the first arm portion 11.
- the elbow joint JT2 has a fourth bearing 72 that rotatably supports a fourth rotation shaft 71 that rotates the second arm portion 12 .
- the third bearing 62 and the fourth bearing 72 are ball bearings.
- the third bearing 62 and the fourth bearing 72 are angular contact ball bearings, and are provided two each.
- Each of the third bearing 62 and the fourth bearing 72 has balls as rolling elements, a retainer that holds the balls, an outer ring, and an inner ring. The balls are evenly arranged by being held by the retainer.
- the fourth rotating shaft 71 is an example of an arm portion rotating shaft.
- the fourth bearing 72 is an example of an arm rotation shaft bearing.
- the two third bearings 62 are arranged on the third rotating shaft 61 .
- the two third bearings 62 are arranged adjacent to each other in the Z direction, which is the height direction.
- the upper third bearing 62 receives one axial load
- the lower third bearing 62 receives the other axial load.
- the two third bearings 62 are arranged between the housing portion 111 of the first arm portion 11 and the third rotating shaft 61 in the radial direction. Also, the two third bearings 62 have the same size.
- the third bearing 62 is arranged to protrude downward from the portion 112 extending in the Y direction, which is the horizontal direction, of the first arm portion 11 .
- a portion of the upper third bearing 62 and the entire lower third bearing 62 are arranged to protrude below the portion 112 .
- the third rotating shaft 61 is also arranged so that the portion below the portion radially overlapping the third bearing 62 protrudes below the portion 112 .
- Part 112 is the lower housing part of the first arm part 11 .
- the Y direction is also the longitudinal direction of the first arm portion 11 .
- the two fourth bearings 72 are arranged on the fourth rotating shaft 71 .
- the two fourth bearings 72 are arranged adjacent to each other in the Z direction, which is the height direction.
- the upper fourth bearing 72 receives one axial load
- the lower fourth bearing 72 receives the other axial load.
- the two fourth bearings 72 are arranged between the housing portion 113 of the first arm portion 11 and the fourth rotation shaft 71 in the radial direction. Also, the two fourth bearings 72 have the same size.
- the fourth bearing 72 is arranged so as to straddle the first arm portion 11 and the second arm portion 12 in the Z direction, which is the height direction. That is, the fourth bearing 72 is arranged so as to overlap the first arm portion 11 and the second arm portion 12 in the horizontal Y direction. Also, at the elbow joint JT2, the first arm portion 11 and the second arm portion 12 are connected so that the second arm portion 12 partially covers the first arm portion 11 from above and from the sides. Specifically, the second arm portion 12 has a recess 124 that covers the upwardly projecting housing portion 113 from above and from the sides. The recess 124 is recessed upward. Further, the side wall portion of the concave portion 124 extending in the Z direction, which is the height direction, is arranged adjacent to the housing portion 113 in the Y direction, which is the horizontal direction.
- First arm drive mechanism 80 includes a motor 81 and a power transmission section 82 .
- the motor 81 is a drive source for driving the first arm portion 11 .
- the power transmission portion 82 transmits the driving force from the motor 81 to the third rotating shaft 61 .
- Power transmission unit 82 has a plurality of gears including gear 821 .
- the gear 821 is arranged coaxially with the third rotating shaft 61 and fastened and fixed to the third rotating shaft 61 so as to rotate integrally with the third rotating shaft 61 . When the gear 821 rotates, the third rotating shaft 61 rotates.
- a second arm drive mechanism 90 is also provided at the elbow joint JT2.
- the second arm drive mechanism 90 includes a motor 91 and a power transmission section 92 .
- the motor 91 is a drive source for driving the second arm portion 12 .
- the power transmission section 92 transmits the driving force from the motor 91 to the fourth rotating shaft 71 .
- the power transmission section 92 has multiple gears including a gear 921 .
- the gear 921 is arranged coaxially with the fourth rotation shaft 71 and fastened and fixed to the fourth rotation shaft 71 so as to rotate integrally with the fourth rotation shaft 71 . When the gear 921 rotates, the fourth rotating shaft 71 rotates.
- the substrate transport robot 100 includes the horizontal articulated robot arm 10 and the substrate holding hand 20 arranged at the tip of the robot arm 10.
- the substrate holding hand 20 is , a first substrate holding hand 21, and a second substrate holding hand 22 arranged above the first substrate holding hand 21 and operating independently of the first substrate holding hand 21, and the robot arm 10 includes a first
- a wrist joint JT3 for driving the substrate holding hand 21 and the second substrate holding hand 22 is included, and the wrist joint JT3 rotatably supports a first rotation shaft 41 for rotating the first substrate holding hand 21. and a second bearing 44 that rotatably supports a second rotating shaft 43 that rotates the second substrate holding hand 22.
- the first bearing 42 and the second bearing 44 are , are ball bearings.
- the above configuration enables spherical balls to be used as rolling elements instead of rollers made of cylindrical rollers. It is possible to avoid the occurrence of variations in bearing friction and variations in the amount of rotation of the wrist joint JT3 due to variations in . As a result, it is possible to suppress the occurrence of variation in the position of the substrate transport robot 100 during repeated motions, so that the repeated positioning accuracy can be improved.
- the substrate transport robot 100 includes the horizontal articulated robot arm 10 and the substrate holding hand 20 arranged at the tip of the robot arm 10 . drives the first arm portion 11, the second arm portion 12 having one end connected to the first arm portion 11 and the other end connected to the substrate holding hand 20, and the second arm portion 12.
- the elbow joint JT2 has a fourth bearing 72 that rotatably supports a fourth rotation shaft 71 that rotates the second arm portion 12.
- the fourth bearing 72 is It is arranged so as to straddle the first arm portion 11 and the second arm portion 12 in the height direction.
- the entirety of the fourth bearing 72 is housed in the first arm portion 11 or the second arm portion 12, unlike the case where the fourth pivot shaft 71 is disposed in the first arm portion 11 or the second arm portion 12. Therefore, it is possible to prevent the first arm portion 11 or the second arm portion 12 from increasing in size in the height direction. As a result, it is possible to prevent the substrate transport robot 100 from increasing in size in the height direction. It should be noted that the fact that the substrate transport robot 100 can be prevented from increasing in size in the height direction is particularly effective when using ball bearings, which tend to be thicker in the height direction than cross roller bearings. be.
- the first bearing 42 and the second bearing 44 are angular contact ball bearings, and two of each are provided.
- the axial loads on both sides in the axial direction can be appropriately received by the two angular contact ball bearings, so that the repeatability of positioning can be improved while appropriately receiving the axial loads on both sides in the axial direction.
- the second rotating shaft 43 is arranged radially inward of the first rotating shaft 41 and extends above the first rotating shaft 41.
- the two second bearings 44 are arranged above and below the second rotation shaft 43 , respectively, and the two first bearings 42 are arranged between the two second bearings 44 on the first rotation shaft 41 . are placed.
- the two second bearings 44 can easily support the second rotating shaft 43
- the two first bearings 42 can easily support the first rotating shaft 41 .
- the second bearing 44 arranged below the second rotation shaft 43 is more sensitive than the second bearing 44 arranged above the second rotation shaft 43. Small size in height direction. As a result, even if the substrate transport robot 100 tends to be large in the height direction due to the provision of the two first bearings 42 and the two second bearings 44, the substrate transport robot 100 can be made as large as possible in the height direction. can be suppressed.
- the wrist joint JT3 is provided with the hand drive mechanism 50, and the hand drive mechanism 50 and the first bearing 42 overlap each other in the horizontal direction. are placed.
- the hand driving mechanism 50 and the first bearing 42 are arranged so as not to overlap in the horizontal direction, it is possible to prevent the robot arm 10 from increasing in size in the height direction.
- the substrate transport robot 100 from increasing in size in the height direction. It should be noted that the fact that the substrate transport robot 100 can be prevented from increasing in size in the height direction is particularly effective when using ball bearings, which tend to be thicker in the height direction than cross roller bearings. be.
- the robot arm 10 includes the first arm portion 11 and the first substrate holding hand 21 connected to the first arm portion 11 at one end and the first substrate holding hand 21 at the other end. Further includes a second arm portion 12 to which the second substrate holding hand 22 is connected, a shoulder joint JT1 for driving the first arm portion 11, and an elbow joint JT2 for driving the second arm portion 12.
- the shoulder joint JT1 has a third bearing 62 that rotatably supports a third rotation shaft 61 that rotates the first arm portion 11, and the elbow joint JT2 rotates the second arm portion 12.
- the first bearing 42, the second bearing 44, the third bearing 62, and the fourth bearing 72 are angular contact ball bearings.
- the first bearing 42, the second bearing 44, the third bearing 62, and the fourth bearing 72 can be configured by angular contact ball bearings suitable for high-precision motion.
- the third bearing 62 is arranged to protrude downward from the horizontally extending portion of the first arm portion 11 .
- the third bearing 62 is arranged above the horizontally extending portion of the first arm portion 11, it is possible to suppress the first arm portion 11 from increasing in size in the height direction. can.
- the first arm portion 11 and the second arm portion 11 are arranged such that the second arm portion 12 covers a part of the first arm portion 11 from above and from the sides.
- the arm part 12 is connected.
- the fourth bearing 72 can be easily arranged so as to straddle the first arm portion 11 and the second arm portion 12 in the height direction, so that the first arm portion 11 or the second arm portion 12 can be positioned at a height. An increase in size in the vertical direction can be easily suppressed.
- the second arm portion 12 since the second arm portion 12 partially covers the first arm portion 11 from above and from the side, the second arm portion 12 can increase the rigidity of the connection portion with the first arm portion 11 . As a result, while increasing the rigidity of the connecting portion with the first arm portion 11 by the second arm portion 12, the first arm portion 11 or the second arm portion 12 is easily prevented from becoming large in the height direction. be able to.
- a substrate transport robot 300 according to the second embodiment will be described with reference to FIG.
- symbol is attached
- the wrist joint JT3 of the substrate transport robot 300 rotates the first substrate holding hand 21 instead of the first bearing 42 and the second bearing 44 of the first embodiment.
- a first bearing 242 that rotatably supports the first rotating shaft 41 to be moved, and a second bearing 244 that rotatably supports the second rotating shaft 43 that rotates the second substrate holding hand 22 . have.
- the first bearing 242 and the second bearing 244 are ball bearings.
- the first bearings 242 are deep groove ball bearings, and two of them are provided.
- the second bearings 244 are deep groove ball bearings, and three of them are provided.
- Each of the first bearing 242 and the second bearing 244 has balls as rolling elements, a retainer that holds the balls, an outer ring, and an inner ring. The balls are evenly arranged by being held by the retainer.
- Two of the three second bearings 244 are arranged above the second rotating shaft 43, and the remaining one is arranged below.
- the three second bearings 244 are spaced apart in the Z direction, which is the height direction.
- the upper two second bearings 244 are arranged between the housing portion 211 of the first substrate holding hand 21 and the second rotating shaft 43 in the radial direction.
- one second bearing 244 on the lower side is arranged between the first rotating shaft 41 and the second rotating shaft 43 in the radial direction.
- the two first bearings 242 are arranged on the first rotation shaft 41 between the two second bearings 244 .
- the two first bearings 242 are arranged adjacent to each other in the Z direction, which is the height direction.
- the two first bearings 242 are arranged between the housing portion 121 of the second arm portion 12 and the first rotation shaft 41 in the radial direction.
- two of the three second bearings 244 are located in the hand space S1 within the first substrate holding hand 21 and in the second arm section 12 of the robot arm 10. It is arranged below the through hole 221 that connects with the arm space S2 and is preloaded below the through hole 221 .
- the remaining one second bearing 244 of the three second bearings 244 is further arranged above the through hole 221 .
- the upper second bearing 244 is referred to as a second bearing 244a
- the lower second bearing 244 is referred to as a second bearing 244b. call.
- the second bearing 244a is preloaded in one axial direction by the large diameter portion 43a of the second rotating shaft 43.
- a large-diameter portion 43a of the second rotating shaft 43 is provided with a preload portion 43b that presses the second bearing 244a in one axial direction.
- the preload portion 43b is a protrusion that protrudes downward.
- the second bearing 244a is preloaded by being pressed downward by the preload portion 43b.
- the second bearing 244a can also be called a preload bearing.
- the second bearing 244b is preloaded by the gear 53 in the other axial direction.
- the gear 53 is provided with a preload portion 53a that presses the second bearing 244b in the other axial direction.
- the preload portion 53a is a protrusion that protrudes upward.
- the second bearing 244b is preloaded by being pressed upward by the preload portion 53a. 5, only one preload position of the second bearing 244a and the second bearing 244b is shown for convenience.
- the second bearings 244a and 244b are preloaded so as to face each other in the axial direction.
- the through hole 221 is provided for arranging wiring such as sensor wiring of the first substrate holding hand 21 .
- the through hole 221 is connected to a through hole 222 provided in the second rotating shaft 43 .
- Through hole 221 connects hand space S1 and arm space S2 via through hole 222 .
- the through hole 221 is formed so as to extend horizontally from the first substrate holding hand 21 to the through hole 222 of the second rotating shaft 43 .
- Through hole 222 is formed to extend in the axial direction. Wiring of the first substrate holding hand 21 is arranged from the hand space S1 to the arm space S2 via the through holes 221 and 222 .
- the first bearing 242 and the second bearing 244 are ball bearings. As a result, it is possible to improve the repeatability of positioning, as in the first embodiment.
- the two second bearings 244a and 244b are through holes that connect the hand space S1 in the first substrate holding hand 21 and the arm space S2 in the robot arm 10. 221 and preloaded below the through-hole 221 .
- the two second bearings 244a and 244b are preloaded across the through hole 221, it is possible to prevent the load due to the preload from being applied to the through hole 221, and the through hole 221 allows the preload to escape. Therefore, it is possible to avoid that the preload applied to the bearing becomes small due to this.
- the second bearing 244 is further arranged above the through hole 221 as described above.
- the second bearing 244 above the through hole 221 and the two second bearings 244 below the through hole 221 can reliably rotatably support the second rotary shaft 43 .
- the substrate transport robot has two substrate holding hands, but the present disclosure is not limited to this.
- a substrate transport robot may have one or more substrate holding hands.
- first bearing and the second bearing are angular contact ball bearings
- first bearing and the second bearing are deep groove ball bearings.
- the first bearing and the second bearing may be ball bearings other than angular ball bearings and deep groove ball bearings.
- the third bearing and the fourth bearing are angular contact ball bearings, but the present disclosure is not limited to this.
- the third bearing and the fourth bearing may be ball bearings such as deep groove ball bearings other than angular ball bearings. Further, it is not necessary that all of the first bearing, the second bearing, the third bearing, and the fourth bearing are the same type of ball bearings. The parts may be different types of ball bearings. Also, the third bearing and the fourth bearing may be cross roller bearings or the like.
- the second bearing arranged at the lower portion of the second rotating shaft is smaller in size in the height direction than the second bearing arranged at the upper portion of the second rotating shaft.
- the second bearing arranged above the second rotating shaft may be smaller in size in the height direction than the second bearing arranged below the second rotating shaft.
- the two second bearings may have the same size.
- the hand driving mechanism and the second bearing are arranged so as to overlap in the horizontal direction, but the present disclosure is not limited to this.
- the hand drive mechanism and the second bearing do not have to be arranged so as to overlap in the horizontal direction.
- a robot arm may include three or more arm portions.
- the fourth bearing is arranged so as to straddle the first arm portion and the second arm portion in the height direction, but the present disclosure is not limited to The entire fourth bearing may be arranged on the first arm portion or the second arm portion.
- the third bearing is arranged so that a part thereof projects downward from the horizontally extending portion of the first arm portion, but the present disclosure is not limited to this.
- the entire third bearing may be arranged to protrude downward from the horizontally extending portion of the first arm portion. Further, the entire third bearing need not be arranged to protrude downward from the horizontally extending portion of the first arm portion.
- the substrate transport robot is a vacuum robot arranged in a vacuum environment
- the substrate transport robot may be an atmospheric robot arranged in an atmospheric environment.
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- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
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Abstract
Description
図1から図4までを参照して、第1実施形態による基板搬送ロボット100の構成について説明する。図1に示すように、基板搬送ロボット100は、基板Wを搬送するロボットである。基板搬送ロボット100は、クリーンルーム200に配置されている。また、基板搬送ロボット100は、真空環境下に配置されている。具体的には、基板搬送ロボット100は、真空室201内に配置されている。
ここで、第1実施形態では、図2および図3に示すように、手首関節JT3は、第1基板保持ハンド21を回動させる第1回動軸41を回動可能に支持する第1軸受け42と、第2基板保持ハンド22を回動させる第2回動軸43を回動可能に支持する第2軸受け44とを有する。第1軸受け42と第2軸受け44とは、玉軸受けである。具体的には、第1軸受け42と第2軸受け44とは、アンギュラ玉軸受けであり、2つずつ設けられている。第1軸受け42と第2軸受け44との各軸受けは、転動体としての玉と、玉を保持する保持器と、外輪と、内輪とを有する。玉は、保持器に保持されることにより、偏りなく配置されている。
また、第1実施形態では、図2および図4に示すように、肩関節JT1は、第1アーム部11を回動させる第3回動軸61を回動可能に支持する第3軸受け62を有する。肘関節JT2は、第2アーム部12を回動させる第4回動軸71を回動可能に支持する第4軸受け72を有する。第3軸受け62と第4軸受け72とは、玉軸受けである。具体的には、第3軸受け62と第4軸受け72とは、アンギュラ玉軸受けであり、2つずつ設けられている。第3軸受け62と第4軸受け72との各軸受けは、転動体としての玉と、玉を保持する保持器と、外輪と、内輪とを有する。玉は、保持器に保持されることにより、偏りなく配置されている。なお、第4回動軸71は、アーム部回動軸の一例である。また、第4軸受け72は、アーム部回動軸軸受けの一例である。
第1実施形態では、上記のように、基板搬送ロボット100は、水平多関節型のロボットアーム10と、ロボットアーム10の先端に配置される基板保持ハンド20と、を備え、基板保持ハンド20は、第1基板保持ハンド21と、第1基板保持ハンド21の上方に配置され、第1基板保持ハンド21とは別個に動作する第2基板保持ハンド22とを含み、ロボットアーム10は、第1基板保持ハンド21と第2基板保持ハンド22とを駆動するための手首関節JT3を含み、手首関節JT3は、第1基板保持ハンド21を回動させる第1回動軸41を回動可能に支持する第1軸受け42と、第2基板保持ハンド22を回動させる第2回動軸43を回動可能に支持する第2軸受け44とを有し、第1軸受け42と第2軸受け44とは、玉軸受けである。
図5を参照して、第2実施形態による基板搬送ロボット300について説明する。なお、上記第1実施形態と同一の構成については、同一の符号を付して詳細な説明を省略する。
第2実施形態では、以下のような効果を得ることができる。
なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本開示の範囲は、上記した実施形態の説明ではなく請求の範囲によって示され、さらに請求の範囲と均等の意味および範囲内でのすべての変更(変形例)が含まれる。
11 第1アーム部
12 第2アーム部
20 基板保持ハンド
21 第1基板保持ハンド
22 第2基板保持ハンド
41 第1回動軸
42、242 第1軸受け
43 第2回動軸
44、244、244a、244b 第2軸受け
50 ハンド駆動機構
61 第3回動軸
62 第3軸受け
71 第4回動軸(アーム部回動軸)
72 第4軸受け(アーム部回動軸軸受け)
100、300 基板搬送ロボット
112 第1アーム部の水平方向に延びる部分
221 貫通孔
JT1 肩関節(第1関節)
JT2 肘関節(第2関節、アーム部関節)
JT3 手首関節
S1 ハンド空間
S2 アーム空間
Claims (14)
- 水平多関節型のロボットアームと、
前記ロボットアームの先端に配置される基板保持ハンドと、を備え、
前記基板保持ハンドは、第1基板保持ハンドと、前記第1基板保持ハンドの上方に配置され、前記第1基板保持ハンドとは別個に動作する第2基板保持ハンドとを含み、
前記ロボットアームは、前記第1基板保持ハンドと前記第2基板保持ハンドとを駆動するための手首関節を含み、
前記手首関節は、前記第1基板保持ハンドを回動させる第1回動軸を回動可能に支持する第1軸受けと、前記第2基板保持ハンドを回動させる第2回動軸を回動可能に支持する第2軸受けとを有し、
前記第1軸受けと前記第2軸受けとは、玉軸受けである、基板搬送ロボット。 - 前記第1軸受けと前記第2軸受けとは、アンギュラ玉軸受けであり、2つずつ設けられている、請求項1に記載の基板搬送ロボット。
- 前記第2回動軸は、前記第1回動軸の径方向内方に配置され、前記第1回動軸よりも上方に延びており、
2つの前記第2軸受けは、前記第2回動軸の上部および下部にそれぞれ配置されており、
2つの前記第1軸受けは、2つの前記第2軸受けの間において、前記第1回動軸に配置されている、請求項2に記載の基板搬送ロボット。 - 前記第2回動軸の下部に配置された前記第2軸受けは、前記第2回動軸の上部に配置された前記第2軸受けよりも、高さ方向のサイズが小さい、請求項3に記載の基板搬送ロボット。
- 前記手首関節には、ハンド駆動機構が設けられており、
前記ハンド駆動機構と前記第1軸受けとは、水平方向において、オーバーラップするように配置されている、請求項1に記載の基板搬送ロボット。 - 前記ロボットアームは、第1アーム部と、一方端部が前記第1アーム部に接続されるとともに他方端部に前記第1基板保持ハンドと前記第2基板保持ハンドとが接続される第2アーム部と、前記第1アーム部を駆動するための第1関節と、前記第2アーム部を駆動するための第2関節とをさらに含み、
前記第1関節は、前記第1アーム部を回動させる第3回動軸を回動可能に支持する第3軸受けを有し、
前記第2関節は、前記第2アーム部を回動させる第4回動軸を回動可能に支持する第4軸受けを有し、
前記第1軸受けと前記第2軸受けと前記第3軸受けと前記第4軸受けとは、玉軸受けである、請求項1に記載の基板搬送ロボット。 - 前記第1軸受けと前記第2軸受けと前記第3軸受けと前記第4軸受けとは、アンギュラ玉軸受けである、請求項6に記載の基板搬送ロボット。
- 前記第4軸受けは、高さ方向において、前記第1アーム部と前記第2アーム部とに跨るように配置されている、請求項6に記載の基板搬送ロボット。
- 前記第3軸受けは、少なくとも一部が前記第1アーム部の水平方向に延びる部分よりも下方に突出するように配置されている、請求項6に記載の基板搬送ロボット。
- 2つの前記第2軸受けが、前記第1基板保持ハンド内のハンド空間と、前記ロボットアーム内のアーム空間とを接続する貫通孔の下方に配置されるとともに、前記貫通孔の下方において予圧されている、請求項1に記載の基板搬送ロボット。
- 前記第2軸受けが、前記貫通孔の上方にさらに配置されている、請求項10に記載の基板搬送ロボット。
- 水平多関節型のロボットアームと、
前記ロボットアームの先端に配置される基板保持ハンドと、を備え、
前記ロボットアームは、第1アーム部と、一方端部が前記第1アーム部に接続されるとともに他方端部に前記基板保持ハンドが接続される第2アーム部と、前記第2アーム部を駆動するためのアーム部関節とを含み、
前記アーム部関節は、前記第2アーム部を回動させるアーム部回動軸を回動可能に支持するアーム部回動軸軸受けを有し、
前記アーム部回動軸軸受けは、高さ方向において、前記第1アーム部と前記第2アーム部とに跨るように配置されている、基板搬送ロボット。 - 前記アーム部関節では、前記第2アーム部が前記第1アーム部の一部を上方および側方から覆うように、前記第1アーム部と前記第2アーム部とが接続されている、請求項12に記載の基板搬送ロボット。
- 前記アーム部回動軸軸受けは、玉軸受けである、請求項12に記載の基板搬送ロボット。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280090103.4A CN118715605A (zh) | 2022-02-04 | 2022-12-07 | 基板搬运机器人 |
| US18/833,536 US20250153349A1 (en) | 2022-02-04 | 2022-12-07 | Substrate-conveying robot |
| KR1020247019596A KR102846274B1 (ko) | 2022-02-04 | 2022-12-07 | 기판 반송 로봇 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2022016723A JP2023114384A (ja) | 2022-02-04 | 2022-02-04 | 基板搬送ロボット |
| JP2022-016723 | 2022-02-04 |
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| WO2023149072A1 true WO2023149072A1 (ja) | 2023-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2022/045059 Ceased WO2023149072A1 (ja) | 2022-02-04 | 2022-12-07 | 基板搬送ロボット |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250153349A1 (ja) |
| JP (1) | JP2023114384A (ja) |
| KR (1) | KR102846274B1 (ja) |
| CN (1) | CN118715605A (ja) |
| TW (1) | TWI840052B (ja) |
| WO (1) | WO2023149072A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024221761A1 (zh) * | 2023-04-28 | 2024-10-31 | 中芯智达半导体科技(上海)有限公司 | 大载荷末端执行机构及多手腕晶圆机器人 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0283182A (ja) * | 1988-09-16 | 1990-03-23 | Tokyo Ohka Kogyo Co Ltd | ハンドリングユニット |
| JPH09283588A (ja) * | 1996-04-08 | 1997-10-31 | Hitachi Ltd | 基板搬送装置及び基板の搬送方法 |
| JP2001310287A (ja) * | 2000-04-28 | 2001-11-06 | Shinko Electric Co Ltd | ロボット用アーム装置 |
| JP2007118123A (ja) * | 2005-10-27 | 2007-05-17 | Toshiba Mach Co Ltd | 産業用ロボットのアーム機構 |
| WO2007080986A1 (ja) * | 2006-01-13 | 2007-07-19 | Nabtesco Corporation | 冷却循環通路を備えた基板搬送用ロボットの駆動装置 |
| JP2012161858A (ja) * | 2011-02-04 | 2012-08-30 | Daihen Corp | ワーク搬送装置 |
| JP2014236036A (ja) * | 2013-05-31 | 2014-12-15 | シンフォニアテクノロジー株式会社 | ワーク搬送ロボット |
| JP2015139853A (ja) * | 2014-01-29 | 2015-08-03 | 日本電産サンキョー株式会社 | 産業用ロボット |
-
2022
- 2022-02-04 JP JP2022016723A patent/JP2023114384A/ja active Pending
- 2022-12-07 KR KR1020247019596A patent/KR102846274B1/ko active Active
- 2022-12-07 CN CN202280090103.4A patent/CN118715605A/zh active Pending
- 2022-12-07 US US18/833,536 patent/US20250153349A1/en active Pending
- 2022-12-07 WO PCT/JP2022/045059 patent/WO2023149072A1/ja not_active Ceased
- 2022-12-27 TW TW111150175A patent/TWI840052B/zh active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0283182A (ja) * | 1988-09-16 | 1990-03-23 | Tokyo Ohka Kogyo Co Ltd | ハンドリングユニット |
| JPH09283588A (ja) * | 1996-04-08 | 1997-10-31 | Hitachi Ltd | 基板搬送装置及び基板の搬送方法 |
| JP2001310287A (ja) * | 2000-04-28 | 2001-11-06 | Shinko Electric Co Ltd | ロボット用アーム装置 |
| JP2007118123A (ja) * | 2005-10-27 | 2007-05-17 | Toshiba Mach Co Ltd | 産業用ロボットのアーム機構 |
| WO2007080986A1 (ja) * | 2006-01-13 | 2007-07-19 | Nabtesco Corporation | 冷却循環通路を備えた基板搬送用ロボットの駆動装置 |
| JP2012161858A (ja) * | 2011-02-04 | 2012-08-30 | Daihen Corp | ワーク搬送装置 |
| JP2014236036A (ja) * | 2013-05-31 | 2014-12-15 | シンフォニアテクノロジー株式会社 | ワーク搬送ロボット |
| JP2015139853A (ja) * | 2014-01-29 | 2015-08-03 | 日本電産サンキョー株式会社 | 産業用ロボット |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024221761A1 (zh) * | 2023-04-28 | 2024-10-31 | 中芯智达半导体科技(上海)有限公司 | 大载荷末端执行机构及多手腕晶圆机器人 |
Also Published As
| Publication number | Publication date |
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| JP2023114384A (ja) | 2023-08-17 |
| KR102846274B1 (ko) | 2025-08-13 |
| KR20240104162A (ko) | 2024-07-04 |
| CN118715605A (zh) | 2024-09-27 |
| US20250153349A1 (en) | 2025-05-15 |
| TWI840052B (zh) | 2024-04-21 |
| TW202332550A (zh) | 2023-08-16 |
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