JP2015066670A - Process machine of ring-shaped workpiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process machine of a ring-shaped workpiece which can be realized at low costs by modification of an existing process machine and can remove cutting chips efficiently.SOLUTION: Provided are a first chuck part 12 which rotates while holding the outer periphery surface of a workpiece W and at which the inside of the workpiece W is processed, and a second chuck part 14 which rotates while holding the inner periphery surface of the workpiece W and at which the outside of the workpiece W is processed. Provided is a workpiece turnover device 16 which includes a first and a second holding parts 40, 42 for holding the outer periphery surface of the workpiece W and turns over the direction of the workpiece to the central axis direction by transferring the workpiece W between the first holding part 40 and the a second holding part 42. Provided is a loader 18 which is movable in the X, Y and Z directions while holding the workpiece W. Provided is a first air blow nozzle 54 which can blow air toward the inner periphery of the workpiece W while the first holding part 40 holds the workpiece W.

Description

  The present invention relates to a processing machine for lathing a ring-shaped workpiece such as an outer ring or an inner ring of a bearing.

  For the outer ring and inner ring of the bearing, a lathe is used to cut the outer corners of the outer peripheral surface and end face (hereinafter referred to as outer processing), and the inner corners of the inner peripheral face and end face are cut. Processing to be performed (hereinafter referred to as inner processing) is performed. Therefore, in this type of processing machine, the first chuck portion that holds the inside of the workpiece for performing outside processing, the second chuck portion that holds the outside of the workpiece for performing inside processing, A work reversing device or the like for reversing the direction of the work supported by the two chuck portions in the axial direction is provided.

  In addition, as described above, since a plurality of processes are performed on one workpiece, it is important to treat chips generated in the previous lathe process. For example, after processing the inner side using the first chuck part, processing the outer side using the second chuck part, or processing two ends in the axial direction of the workpiece sequentially using the same chuck part. It is necessary to change the work many times. Therefore, if the chips generated in the previous processing adhere to the workpiece, the workpiece cannot be accurately delivered and held to the chuck portion used for the subsequent processing.

  Regarding the treatment of the chips generated by the outside processing, since most of the chips fall below the workpiece and the outer surface of the workpiece can be easily air blown, there is no problem. However, the processing of chips generated by the inner processing is likely to be a problem because it is difficult for air to blow during processing and the chips are likely to remain inside the workpiece.

  Conventionally, regarding chip processing, for example, as disclosed in Patent Document 1, a support device that supports a cylindrical part that has been machined using a lathe and the like, and air that enters an inner space of the cylindrical part There has been a chip removing device for a cylindrical part provided with an air blowing device. This support device is a high-functional robot hand or the like, and functions as a loader that transfers a workpiece and transfers it to and from the chuck portion, and the workpiece reversing device described above. The air blowing device functions to remove chips remaining on the inner side of the cylindrical part, and functions as a loader that transfers the workpiece transferred from the support device to a product chute or the like.

JP 2000-233341 A

  The chip removal device of Patent Document 1 is a device in which both the support device and the air blowing device are highly functional and require complex control, and it is difficult to add to or modify an existing processing machine, Installation costs are high. In addition, every time the size of the workpiece (cylindrical part) or the content of processing changes, there is a problem that the head portion of the air blowing device must be replaced or a complicated control program must be reviewed.

  The present invention has been made in view of the above-described background art, can be configured with a simple structure at low cost, can be easily applied to existing processing machines, and can efficiently cut chips. It aims at providing the processing machine of the ring-shaped workpiece | work which can perform removal.

  The present invention is a processing machine for lathe processing of a ring-shaped workpiece, the center axis of the workpiece is arranged at the position of its own rotation axis, the outer peripheral surface of the workpiece is held, rotated together with the workpiece, A first chuck portion in which the inside of the workpiece is machined, and the central axis of the workpiece are arranged at the position of its own rotation axis to hold the inner peripheral surface of the workpiece, rotate together with the workpiece, and the outside of the workpiece is machined A second chuck portion, a first holding portion and a second holding portion for holding the outer peripheral surface of the workpiece, wherein at least one of the first and second holding portions moves and approaches each other, A workpiece reversing device for reversing the orientation of the workpiece in the direction of the central axis by delivering the workpiece held by the holding portion to the second holding portion, the chuck portions and the respective chuck portions holding the workpiece. Possible to move between holding parts A loader, and a first air blow nozzle that is provided in at least one of the first and second holding portions and is attached to the inner peripheral surface of the work so as to be able to inject air while holding the work. In the state where the work is held by the first holding part or the second holding part, the first air blow nozzle is processed so as to be able to inject air toward the inner peripheral surface of the work. Machine.

  A second air blow nozzle is provided at a position different from the installation position of the first air blow nozzle, the outer peripheral surface of the workpiece is held by the loader and transferred to the position of the second air blow nozzle, and the second air blow nozzle is You may provide the structure provided so that air could be injected toward the internal peripheral surface of the said workpiece | work.

  Further, a sensor for detecting that the workpiece has been transferred to a predetermined position near the second air blow nozzle is provided in the vicinity of the second air blow nozzle, and the sensor allows the workpiece to be moved to a predetermined position near the second air blow nozzle. It may be detected that the air has been transferred to the position and start air injection from the second air blow nozzle. The second air blow nozzle preferably injects air with a pressure stronger than that of the first air blow nozzle.

  The ring-shaped member processing machine of the present invention uses a work reversing device that moves a work between two holding parts, and attaches a first air blow nozzle to one holding part to inject air onto the inner peripheral surface of the work. Therefore, for example, by modifying an existing processing machine, it can be configured at low cost. Moreover, although the process of chip removal is added, since air is injected during the process of changing the workpiece, the tact time does not increase and the chips can be removed reliably.

  Furthermore, if a second air blow nozzle is attached, for example, removal of chips from a small workpiece is performed by the first air blow nozzle, and when processing a large workpiece, the second air blow nozzle is used. Even without replacement, it can handle workpieces of various sizes.

It is a left view which shows the structure of 1st embodiment of the ring-shaped member processing machine of this invention. It is a top view which shows the structure of 1st embodiment. It is a front view which shows the structure of 1st embodiment. It is the front view (a) explaining the structure and operation | movement of a 1st chuck | zipper part, and a left view (b). It is the front view (a) explaining the structure and operation | movement of a 1st chuck | zipper part, and a left view (b). It is a front view explaining the structure and operation | movement of a 1st holding | maintenance part (a), (b). It is a front view explaining the structure and operation | movement of a 2nd holding | maintenance part (a), (b). It is a left view which shows the structure of 2nd embodiment of the ring-shaped member processing machine of this invention. It is the top view (a) explaining the structure and operation | movement of an air blow chamber in which the 2nd air blow nozzle was installed, and a front view (b).

  Hereinafter, a first embodiment of a ring-shaped workpiece processing machine according to the present invention will be described with reference to FIGS. The processing machine 10 according to the first embodiment is a device that performs the above-described outside and inside machining on a workpiece W such as an outer ring or an inner ring of a bearing using a lathe. In the following description, the left-right direction of the front view shown in FIG. 3 is referred to as the X direction, the direction orthogonal to the paper surface is referred to as the Y direction, and the vertical direction is referred to as the Z direction.

  As shown in FIGS. 1 to 3, the processing machine 10 includes first and second chuck portions 12 and 14 that rotate while holding a workpiece during lathe machining, a workpiece reversing device 16 that reverses the direction of the workpiece W, A loader 18 that moves between the first and second chuck portions 12 and 14 and the workpiece reversing device 16 and the like to deliver the workpiece W, a first air blow nozzle 54 that injects air, and controls the operation of each portion (not shown) A control device is provided. The first air blow nozzle 54 is connected to an air supply source (not shown) such as a compressor for supplying air.

  The first chuck unit 12 is used when machining the workpiece W on the inside. As shown in FIG. 4, the first chuck portion 12 has a disk-shaped substrate 20, and the central portion on the back side thereof is attached to a rotation shaft of a rotary drive device 22 such as a motor. The rotation axis of the rotation drive device 22 is arranged in the X direction, and the substrate 20 is driven by the rotation drive device 22 to rotate in parallel with the YZ plane.

  On the front surface of the substrate 20, three receiving portions 24, which are protrusions having the same height, are provided radially from the center of the substrate 20, and the inner end of the receiving portion 24 has a thin disk shape. Covered with a cover plate 26. The diameter of the cover plate 26 is smaller than the inner diameter of the workpiece W. Further, three outer chuck members 28 are provided radially between the three receiving portions 24, and the outer chuck members 28 can reciprocate concentrically in the radial direction from the center of the substrate 20.

  When holding the workpiece W, the end surface of the workpiece W on the non-processed side is brought into contact with the tip surfaces of the three receiving portions 24, and the three outer chuck members 28 are moved toward the center of the substrate in conjunction with each other. The three positions on the outer peripheral surface of the workpiece W are firmly held, and the center axis of the workpiece W is aligned with the rotation axis of the rotation drive device 22.

  In front of the first chuck portion 12, as shown in FIG. 2, a boring tool 31 and the like for performing inner processing are provided.

  The second chuck portion 14 is provided on the side of the first chuck portion 12 and is used when processing the workpiece W outside. As shown in FIG. 5, the second chuck portion 14 has a disk-shaped substrate 30, and the central portion on the back side thereof is attached to a rotation shaft of a rotary drive device 32 such as a motor. The rotation shaft of the rotation drive device 32 is arranged in the X direction, and the substrate 30 is driven by the rotation drive device 32 to rotate in parallel with the YZ plane.

  Three movable receiving plates 34 having the same height and formed in a fan shape when viewed from the front are provided radially on the front surface of the substrate 30 in the radial direction from the center of the substrate 20. The movable receiving plate 34 is integrally formed with an inner chuck member 36 erected in the opposite direction to the substrate 30 at the end portion on the fan-shaped inner peripheral side. The tip surface of the inner chuck member 36 is covered with a thin disc-shaped cover plate 38, and the diameter of the cover plate 38 is smaller than the inner diameter of the workpiece W (in FIG. 5A, the cover plate 38 is omitted). Have been). The three movable receiving plates 34 can reciprocate concentrically in the radial direction from the center of the substrate 30, respectively, and thereby the inner chuck member 36 also reciprocates in the same direction.

  When holding the workpiece W, the end surface of the workpiece W on the non-machined side is brought into contact with the flat surfaces of the three movable receiving plates 34 so that the three inner chuck members 36 are interlocked and away from the center of the substrate 30. By moving, the three positions on the inner peripheral surface of the workpiece W are firmly held, and the center axis of the workpiece W is aligned with the rotation axis of the rotation drive device 32.

  As shown in FIGS. 1 and 2, a single-edged cutting tool 39 and the like for performing outside processing are provided in front of the second chuck portion 14.

  The work reversing device 16 is provided above the first and second chuck portions 12 and 14 and includes a first holding portion 40 and a second holding portion 42.

  As shown in FIG. 6, the first holding portion 40 is provided on a slide portion 46 that reciprocates along a rail 44 arranged in the Y direction, and a regular hexahedral main body 48 (1) is provided on the slide portion 46. On the other hand, it can rotate in parallel with the XY plane. On the side surface of the main body 48 (1), a receiving plate 50 (1) having a shape in which three rectangular plate materials are radially arranged and integrated is attached substantially parallel to the side surface of the main body 48. Further, three chuck members 52 (1) are provided radially between the three rectangular portions of the receiving plate 50 (1), and the chuck members 52 (1) have a radius from the center of the receiving plate 50 (1), respectively. Can reciprocate concentrically in the direction.

  When holding the workpiece W, one end surface of the workpiece W is brought into contact with the receiving plate 50 (1), and the three chuck members 52 (1) are moved toward the center of the receiving plate 50 (1) in conjunction with each other. By doing so, the three places on the outer peripheral surface of the workpiece W are firmly held, and the center axis of the workpiece W is aligned with the center position of the receiving plate 50 (1).

  A first air blow nozzle 54 is attached to the center position of the receiving plate 50 (1). The first air blow nozzle 54 forms, for example, an air injection port on each side of the hexagonal nut shape (or every other side), and receives the air sent from the air supply source through the air supply pipe 56. Injected in a direction substantially parallel to (1). That is, air can be injected toward the inner peripheral surface of the workpiece W while the first holding unit 40 holds the workpiece W.

  As shown in FIG. 7, the second holding portion 42 is provided on the side of one end portion of the rail 44, and has the same main body 48 (2), receiving plate 50 (2), and three pieces as the first holding portion 40. A chuck member 52 (2) is provided, and the workpiece W is held by the receiving plate 50 (2) and the chuck member 52 (2). The difference from the first holding part 40 is that the main body 48 (2) is provided on the fixed plate 58 and is rotatable with respect to the fixed plate 58 in parallel with the XY plane, the first air blow nozzle 54 and the air. The supply pipe 56 is not provided.

  The operation of transferring the workpiece W between the first holding unit 40 and the second holding unit 42 is performed as follows. For example, assuming that the first holding unit 40 holds the workpiece W as shown in FIG. 6A and the second holding unit 42 is the side that receives the workpiece W from the first holding unit 40, first, The main body 48 (1) of the holding part 40 rotates and directs the workpiece W toward the second holding part 42 as shown in FIG. The main body 48 (2) of the second holding part 42 also rotates, and the receiving plate 50 (2) is directed toward the first holding part 40. In this state, the center of the receiving plate 50 (1) of the first holding unit 40 and the center of the receiving plate 50 (2) of the second holding unit 42 are arranged on a straight line in the X direction.

  Next, the slide part 46 slides in the X direction along the rail 44, and the first holding part 40 moves to the vicinity of the second holding part 42. When the front end surface of the workpiece W comes into contact with the receiving plate 50 (2) of the second holding portion 42, the second holding portion 42 holds the workpiece W by moving the chuck member 52 (2). In the holding unit 40, the chuck member 52 (1) moves to release the holding of the workpiece W. Thereafter, in the first holding part 40, the slide part 46 moves in the opposite direction along the rail 44, the main body 48 (1) rotates in the opposite direction, and returns to the state shown in FIG. W does not hold). In addition, the main body 48 (2) rotates in the opposite direction in the second holding unit 40, and the second holding unit 40 enters the state shown in FIG. With this series of operations, the workpiece W held by the first holding unit 40 is held in the second holding unit 42 with its direction reversed in the central axis direction.

  The loader 18 includes a main body 48 (3), a receiving plate 50 (3), and three chuck members 52 (3) similar to the second holding portion 42. The receiving plate 50 (3) and the chuck member 52 (3 ) And hold the workpiece W. A difference from the second holding portion 42 is that the main body 48 (3) is attached to a moving mechanism (not shown) and is movable in the XYZ directions. 14, the workpiece W is transferred between the first holding unit 40 and the second holding unit 42. The operation of holding and releasing the workpiece W at the time of delivery is the same as the delivery operation between the first and second holding portions 40 and 42 described above.

  Next, the operation of performing lathe machining with the processing machine 10 will be described. For example, when machining the inside of the workpiece W as the first machining pattern and then machining outside, the loader 18 first holds the workpiece W that has been loaded into the processing machine 10 and before lathe machining, Transfer toward one chuck portion 12. The first chuck portion 12 receives the workpiece W from the loader 18, holds its outer peripheral surface firmly, rotates with the workpiece W, and performs inner machining using the boring tool 31 or the like. Part of the chips generated by this processing remains inside the workpiece W without falling downward.

  When the inner machining is completed, the loader 18 receives the workpiece W from the first chuck portion 12 and transfers the workpiece W to the first holding portion 40 of the workpiece reversing device 16. The 1st holding | maintenance part 40 receives the workpiece | work W from the loader 18, hold | maintains the outer peripheral surface, and injects air to the internal peripheral surface of the workpiece | work W from the 1st air blow nozzle 54, and the chip remaining on the internal peripheral surface Is removed. Thereafter, when the second holding unit 42 receives the workpiece W from the first holding unit 40, the direction of the workpiece W is reversed.

  When the direction of the workpiece W is reversed, the loader 18 receives the workpiece W from the second holding portion 42 and transfers the workpiece W to the second chuck portion 14. The second chuck portion 14 receives the workpiece W from the loader 18, holds its inner peripheral surface firmly, rotates together with the workpiece W, and performs outside processing using a single-blade bit 39 or the like. The chips generated by this processing fall downward and do not remain on the inner peripheral surface of the workpiece W. When the outside machining is completed, the loader 18 receives the workpiece W from the second chuck portion 14, transfers the workpiece W to a product chute or the like, and the operation for one workpiece W is completed.

  Further, as the second processing pattern, processing inside the workpiece W and processing outside the one end surface side of the workpiece W may be performed, and thereafter processing on the opposite outer side may be performed.

  As described above, the ring-shaped workpiece processing machine 10 uses the workpiece reversing device 16 that changes the workpiece W between the first and second holding portions 40 and 42, and the first holding portion 40 has a first air blow nozzle. Since it is a simple structure of attaching 54 and injecting air to the internal peripheral surface of the workpiece | work W and removing a chip, it can comprise cheaply by modifying the existing processing machine, for example. Moreover, although the chip removal process is added, since the first air blow nozzle 54 is attached to the workpiece reversing device 16 that changes the workpiece W, the chips can be reliably removed without affecting the tact time. . In addition, if control is performed so that air is ejected from the first air blow nozzle only to the workpiece W transferred from the first chuck portion 12 to the first holding portion 40 used in the inner processing, unnecessary air consumption is reduced. It can also be suppressed.

  Next, a second embodiment of the ring-shaped member processing machine of the present invention will be described with reference to FIGS. Here, the same components as those in the above embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 8, in the processing machine 60 of the second embodiment, an air blow chamber 62 is provided on the side of the first holding unit 40 of the work reversing device 16, and a second air blow nozzle 64 is installed therein. ing. The second air blow nozzle 64 is used when processing a relatively large workpiece W.

  As shown in FIG. 9, the air blow chamber 64 is provided inside a substantially rectangular hood 66 whose front side in the X direction is open, and a rotating shaft member 68 is provided at the center of the back surface 66 a of the hood 66. A small rotating body 70 is rotatably attached to the rotating shaft member 68. Further, a cylindrical second air blow nozzle 64 protruding along the rotation axis of the rotation shaft member 68 and cylindrical auxiliary nozzles 72a and 72b protruding in a direction perpendicular to the rotation axis are attached to the rotating body 70. Yes. The three nozzles 64, 72 a, 72 b are arranged in a T shape with the rotating body 70 as the center.

  The rotating body 70 is hollow on the inside, and air is supplied to a portion on the rotating shaft member 68 side through an air supply pipe 74 to divert the air to the three nozzles 64, 72 a, 72 b, and the tip of each nozzle It is made to spray from the injection port. As shown in FIG. 9B, the injection port of the auxiliary nozzle 72a is provided in the upper portion of the side surface of the tip portion, and the injection port of the auxiliary nozzle 72b is provided in the lower portion of the side surface of the tip portion. Therefore, when air is injected from the auxiliary nozzles 72a and 72b, the rotating body 70 rotates counterclockwise by the injection force. The injection port of the second air blow nozzle 64 is provided on the side surface of the tip, and rotates together with the rotating body 70 while injecting air in a direction perpendicular to the rotation axis. The pressure of the air injected by the second air blow nozzle 64 is stronger than that of the first air blow nozzle 54 described above.

  An optical sensor 76 that is a part of a control device (not shown) is provided slightly inside the open end of the hood 66. When the control device detects that the workpiece W has been inserted inside the hood 66 by the optical sensor 76, the control device starts supplying air to the three nozzles 64, 72a, 72b and confirms that the workpiece W has been pulled out. If detected, control is performed to stop the air supply. In particular, when the second air blow nozzle 64 is attached to an existing processing machine, by using the optical sensor 76, it is possible to easily realize control of injecting air only when necessary.

  Next, the operation of performing lathe processing with the processing machine 60 will be described. Here, the operation in the case where the above-described first machining pattern is performed on a relatively large workpiece W (when machining the inside of the workpiece W and then machining outside) will be described.

  First, the loader 18 holds the workpiece W that has been loaded into the processing machine 60 and is not turned, and transports it toward the first chuck portion 12. The first chuck portion 12 receives the workpiece W from the loader 18, holds the outer peripheral surface firmly and rotates together with the workpiece W, and performs inner processing using the boring tool 31 or the like. This operation is the same as the case of processing a small work W by the processing machine 10.

  When the inner processing is finished, the loader 18 receives the workpiece W from the first chuck portion 12, transfers the workpiece W to the air blow chamber 62, and arranges the tip end portion of the second air blow nozzle 64 inside the workpiece W. When the workpiece W is inserted inside the hood 66, the nozzles 64, 72 a, 72 b start to inject air according to a command from the control device, and the strong pressure air injected from the second air blow nozzle 64 causes the workpiece W to Chips remaining on the inner peripheral surface are removed.

  Thereafter, the loader 18 transfers the workpiece W to the first holding unit 40 of the workpiece reversing device 16. The first holding unit 40 receives the workpiece W from the loader 18 and holds the outer peripheral surface thereof. Here, since the removal of chips has already been completed, it is not necessary to inject air from the first air blow nozzle 54. Thereafter, when the second holding unit 42 receives the workpiece W from the first holding unit 40, the direction of the workpiece W is reversed. Thereafter, as in the processing machine 10 described above, the outside processing and the workpiece W are carried out.

  Since the first air blow nozzle 54 provided in the first holding part 40 is set for a relatively small work W, the pressure of air injection is difficult to remove the chips of the large work W. For example, it can be handled by replacing the first air blow nozzle 54 according to the size of the workpiece W or increasing the pressure of the air injection. As a whole, work efficiency decreases. However, since the processing machine 60 is provided with the first air blow nozzle 54 for the small-diameter workpiece W and the powerful second air blow nozzle 64 for the large-diameter workpiece W separately, the troublesome setup change is performed. It can be used for workpieces of various sizes.

  The present invention is not limited to the above embodiment. For example, as long as the first and second air blow nozzles are capable of injecting air toward the inner peripheral surface of the workpiece disposed in the vicinity, the shape of the nozzles may be changed to a shape other than the above. The first and second air blow nozzles may be fixed or rotary. Moreover, although it is preferable to provide a 1st air blow nozzle in a 1st holding part, it should just be provided in at least one of a 1st holding part and a 2nd holding part, and may be attached to both.

  The workpiece reversing device is not limited to the structure of the workpiece reversing device 16 described above. For example, when transferring the workpiece, the second holding portion may approach the first holding portion, or both may approach each other.

10, 60 Ring-shaped workpiece processing machine 12 First chuck portion 14 Second chuck portion 16 Work reversing device 18 Loader 40 First holding portion 42 Second holding portion 54 First air blow nozzle 64 Second air blow nozzle 74 Optical sensor W work

Claims (4)

It is a processing machine that performs lathe processing of a ring-shaped workpiece, and places the center axis of the workpiece at the position of its own rotation axis, holds the outer peripheral surface of the workpiece, rotates together with the workpiece, and the inside of the workpiece is A first chuck portion to be machined and a second axis in which the center axis of the workpiece is arranged at the position of its own rotation axis to hold the inner peripheral surface of the workpiece and rotate with the workpiece to machine the outside of the workpiece It has a chuck part and a first holding part and a second holding part that hold the outer peripheral surface of the workpiece, and at least one of the first and second holding parts moves to approach each other, and the first holding part holds The workpiece reversing device for reversing the orientation of the workpiece in the direction of the central axis by delivering the workpiece to the second holding portion, and holding the workpiece and the chuck portions and the holding portions Loader that can move between Provided on at least one of said first and second holding portions, while holding the workpiece, and a first air blow nozzle mounted for injecting air toward the inner peripheral surface of the workpiece,
A ring characterized in that the first air blow nozzle is provided so as to be able to inject air toward an inner peripheral surface of the work in a state where the work is held by the first holding part or the second holding part. Machine for workpieces.   A second air blow nozzle is provided at a position different from the installation position of the first air blow nozzle, the outer peripheral surface of the workpiece is held by the loader and transferred to the position of the second air blow nozzle, and the second air blow nozzle is The ring-shaped workpiece processing machine according to claim 1, wherein the workpiece is provided so that air can be jetted toward an inner peripheral surface of the workpiece.   A sensor that detects that the workpiece has been transferred to a predetermined position near the second air blow nozzle is provided in the vicinity of the second air blow nozzle, and the sensor moves the workpiece to a predetermined position near the second air blow nozzle. The ring-shaped workpiece processing machine according to claim 2, wherein the transfer of the second air blow nozzle is detected upon detection of the transfer. The ring-shaped workpiece processing machine according to claim 2, wherein the second air blow nozzle injects air at a pressure stronger than that of the first air blow nozzle.

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