JP4076695B2 - Cylinder head processing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cylinder head processing machine for processing one processing surface such as an intake manifold surface of a cylinder head in an engine or the like and another processing surface such as a lower surface.
[0002]
[Prior art]
FIG. 1B shows a processing system using a conventional cylinder head processing machine. In this machining system, as shown in FIG. 1B, a plurality of machine tools 111, 154, 211, 254 are arranged in parallel at a predetermined interval, and between these machine tools 111, 154, 211, 254, Work transfer devices 113, 114, 115, 214, 215 and the like are arranged, and a work carry-in device 116 and a work carry-out device 217 are arranged at both ends of the transfer path. Each of the machine tools 111, 154, 211, and 254 includes tools 122, 155, 222, and 255 for machining the machining surface such as the lower surface of the cylinder head and the intake manifold surface, and the cylinder head does not interfere with each first tool. A plurality of clamp members (not shown) for clamping in position are provided. Furthermore, jigs 120, 151, 220, and 251 for holding the workpiece are provided corresponding to the machine tools 111, 154, 211, and 254, respectively. As described above, machine tools having different machining tools, that is, machining processes are distributed, and the machining time in each machining process is made substantially the same, so that the work transfer between each machining process can be synchronized, and as a result The production efficiency is improved.
[0003]
In each machine tool, for example, machining is performed independently at four locations on the lower surface of the cylinder head. In this way, the processing of the intake manifold surface and the lower surface is performed by different machine tools in order to avoid interference between the tool and the clamp member. In other words, in order to avoid interference between the tool and the clamp member, it is necessary to provide the tool on the opposite side of the clamp member, etc., and the machine tool can be placed only on one side of the workpiece at different stations. It depends.
[0004]
[Problems to be solved by the invention]
For this reason, conventionally, it has been necessary to disperse the machine tools, and as is clear from FIG. 1B, there is a problem that a large space is required for installing the machining system including the machine tools. It was. In addition, the number of conveying devices for conveying workpieces between the machine tools is required in correspondence with the machine tools, and a jig is required for each machine tool, resulting in a complicated configuration of the entire processing system.
[0005]
In addition, since the processing of the lower surface of the cylinder head and the processing of the intake manifold surface are performed separately in two processes, the time from the start of processing to the end of processing, including the time required to transfer the cylinder head and change the posture during processing, is included. There was also a problem that it took a long time to process.
[0006]
The present invention has been made paying attention to such problems existing in the prior art. The purpose is to allow one surface such as the lower surface of the cylinder head and the other surface such as a processing surface to be simultaneously processed at the same station. As a result, the overall configuration of the machining system can be simplified, and the installation space can be reduced even if the machining time of the machine tool is substantially the same and the machining process is distributed to some extent. It is an object of the present invention to provide a cylinder head processing machine that can shorten the processing time by omitting the conveyance of the cylinder head in the above.
[0007]
[Means for Solving the Problems and Effects of the Invention]
In order to achieve the above object, the invention described in claim 1 A workpiece holding device that holds the cylinder head so that the first machining surface is oriented in one direction and the other surface is oriented in the other direction; A first surface processing device having a first tool for processing one processing surface, and a second surface having a second tool for processing the second processing surface of the cylinder head, disposed opposite to the other side of the work holding device. A two-side machining device, and the work holding device has a regulating member capable of contacting a part of the cylinder head and a substantially U-shape in a planar shape so as to bypass the first machining surface of the cylinder head. A formed first clamp member, a clamp portion projecting from a part of the first clamp member, and clamping a portion on the first machining surface side of the cylinder head between the regulating member, and the cylinder head 1st machining surface and opposite Extending positioned toward the portion of the side, second clamping member for clamping the opposite side of the portion between the first working surface of the cylinder head between the regulating member Is provided.
[0009]
Therefore, the claims 1 In the invention described in (1), since the clamp member is extended so as to bypass the surface to be processed, interference between the clamp member and the tool can be avoided. For this reason, two cylinder heads can be simultaneously processed by the machine tool of the same station. Therefore, jigs can be shared at the same station, the number of jigs can be reduced, and the number of workpiece transfer devices can be reduced, thereby simplifying the configuration of the entire processing system. In addition, since two machine tools can be arranged in the same station, the installation space for the machining system can be reduced. Further, since it is not necessary to transport the cylinder head or change the posture during the machining, the machining time can be shortened. Furthermore, if the two surfaces are processed simultaneously with the cylinder head clamped on the workpiece holding device at one processing station, the processing accuracy with respect to the reference surface of both processing surfaces can be improved.
[0010]
Claim 2 In the invention described in claim 1 In the cylinder head processing machine according to claim 1, the work holding device includes switching means for switching the first clamp member and the second clamp member to the clamp position and the unclamp position. And a pressing means for pressing the first clamp member and the second clamp member toward the regulating member at the clamp position; Is provided.
[0011]
Therefore, the cylinder head can be easily attached to and detached from the work holding device by switching the first clamp member and the second clamp member between the clamp position and the unclamp position by the switching means.
[0013]
Also By pressing the first clamp member and the second clamp member at the clamping position to the regulating member side by the pressing means, the portion on the processing surface side of the cylinder head and the portion on the opposite side are strongly connected to the regulating member. Can be clamped to.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1A, in the machining system of this embodiment, a first cylinder head machining machine 11 for performing plane machining on a cylinder head W as a workpiece, and a hole machining on the cylinder head W are performed. Therefore, the second cylinder head processing machine 12 is arranged in parallel at a predetermined interval. First to third workpiece transfer devices 13, 14, 15 are arranged in front of the first cylinder head processing machine 11, between the two cylinder head processing machines 11, 12, and behind the second cylinder head processing machine 12. Has been. A workpiece carry-in device 16 is disposed in front of the first workpiece transfer device 13, and a workpiece carry-out device 17 is disposed behind the third workpiece transfer device 15.
[0017]
Then, the cylinder head W is carried into the first cylinder head processing machine 11 via the work carry-in device 16 and the first work transfer device 13, and the first cylinder head processing machine 11 has the first of the intake manifold surfaces of the cylinder head W. Planar machining is performed on the first machining surface Ws1 and the second machining surface Ws2 on the lower surface. Subsequently, the cylinder head W is transferred from the first cylinder head processing machine 11 to the second cylinder head processing machine 12 via the second workpiece transfer device 14, and the second cylinder head processing machine 12 uses the cylinder head W. Inner surface processing is performed on the intake hole Wh1 and the exhaust hole Wh2. Thereafter, the cylinder head W is unloaded from the second cylinder head processing machine 12 via the third workpiece transfer device 15 and the workpiece unloading device 17.
[0018]
As shown in FIGS. 1 and 4, the first cylinder head processing machine 11 is equipped with a work holding device 20, which causes the cylinder head W to move the first processing surface Ws <b> 1 upward one side. While being oriented, the second processed surface Ws2 is held in a state of being directed to the other side. A first surface processing device 21 is disposed opposite to one side of the work holding device 20, and the first surface processing device 21 is provided with a first tool 22 for processing the first processing surface Ws1 of the cylinder head W. ing. A second surface processing device 23 is disposed opposite to the other side of the work holding device 20, and a second tool 24 for processing the second processing surface Ws <b> 2 of the cylinder head W is disposed on the second surface processing device 24. Is provided.
[0019]
Then, as shown in FIG. 4, while the cylinder head W is held at a predetermined position on the work holding device 20, the tools 22 and 24 of the surface processing devices 21 and 23 are rotated toward the cylinder head W. Moved closer. At the same time, the tools 22 and 24 are relatively moved in the longitudinal direction of the cylinder head W, and the first machining surface Ws1 and the second machining surface Ws2 of the cylinder head W are simultaneously machined at the same station.
[0020]
As shown in FIGS. 2 to 5, the work holding device 20 is provided with a jig 25, and a plurality of regulating members 26 are disposed on the jig 25. These regulating members 26 are brought into contact with the upper surface Ws3 of the cylinder head W, whereby the cylinder head W is positioned at a predetermined position on the jig 25.
[0021]
A pair of first pressing cylinders 27 constituting pressing means are disposed in the jig 25 at predetermined intervals in the extending direction of the cylinder head W. Above the cylinder head W, a first clamp member 28 having a substantially U shape is formed on both ends of the piston rod 27a of both the pressing cylinders 27 so as to be extended and detoured around the first processing surface Ws1. It is rotatably supported by a pin 29 at the portion. A pair of clamp portions 30 project from the center portion of the first clamp member 28 so as to be able to be engaged and disengaged with the recess Wc1 on the first processing surface Ws1 side of the cylinder head W.
[0022]
The jig 25 is provided with a pair of first switching cylinders 31 constituting switching means, and the piston rods 31 a are connected to the first clamp member 28 via the long holes 32 a of the connecting plate 32 and the engaging pins 33. It is connected to. Then, when these first switching cylinders 31 are immersed or protruded, the first clamp member 28 is rotated around the pin 29, and the clamp position indicated by the solid line and the unclamp indicated by the chain line in FIG. Switch to the position.
[0023]
In addition, when the first pressing cylinder 27 is immersed in a state where the first clamp member 28 is disposed at the clamp position, the first clamp member 28 is moved to the regulating member 26 side, and the clamp portion 30 is moved. Is pressed against the inner surface of the concave portion Wc1 of the cylinder head W. Thereby, a portion of the cylinder head W on the first machining surface Ws1 side is clamped between the clamp portion 30 and the regulating member 26.
[0024]
A two-armed rotation lever 34 is attached to the jig 25 via a bracket 35 so as to be positioned below the cylinder head W. A second clamp member 36 is rotatably supported by a pin 37 on one arm portion of the rotation lever 34 so as to extend toward a portion of the cylinder head W opposite to the first processing surface Ws1. ing. A clamp portion 36a is formed at the tip of the second clamp member 36 so as to be able to be engaged with and disengaged from the concave portion Wc2 on the opposite side of the first processing surface Ws1 of the cylinder head W.
[0025]
The jig 25 is provided with a second switching cylinder 38 constituting switching means, and its piston rod 38a is connected to the other arm portion of the rotating lever 34 through a long hole 39 and an engaging pin 40. ing. The jig 25 is provided with a second pressing cylinder 41 that constitutes pressing means, and its piston rod 41 a is connected to an intermediate portion of the second clamp member 36 via a connecting lever 42.
[0026]
Then, when the second switching cylinder 38 is protruded or immersed, the second clamp member 36 is moved up and down via the rotating lever 34, and the clamp position indicated by the solid line and the unclamp indicated by the chain line in FIG. Switch to the position. Further, when the second pressing cylinder 41 is immersed in a state where the second clamp member 36 is disposed at the clamp position, the second clamp member 36 is moved to the regulating member 26 side, and the clamp portion 36a. Is pressed against the inner surface of the concave portion Wc2 of the cylinder head W. Thereby, between the clamp part 36a and the control member 26, the part on the opposite side to the 1st process surface Ws1 of the cylinder head W is clamped.
[0027]
As shown in FIGS. 4 and 5, the first pressing cylinder 27 and the second pressing cylinder 41 are provided with a releasing mechanism 43 that constitutes a releasing means. That is, the release operation shaft 44 is rotatably supported by the jig 25 and is connected to a manual operation lever (not shown) or the like. A first engagement piece 45 is fixed to the release operation shaft 44, and its tip is engaged with a recess 27 b on the piston rod 27 a of one first pressing cylinder 27. Below the release operation shaft 44, a connecting shaft 46 is rotatably supported by the jig 25, and is connected to the release operation shaft 44 via a connection lever 47 and a connection rod 48. A second engagement piece 49 is fixed to the connecting shaft 46, and its tip is engaged with a recess 41 b on the piston rod 41 a of the second pressing cylinder 41.
[0028]
Then, when a manual operation lever (not shown) or the like is operated in a state where both the clamp members 28 and 36 are pressed to the regulating member 26 side at the clamp position by the projecting operation of the both pressing cylinders 27 and 41, the release operation is performed. The shaft 44 is rotated counterclockwise in FIGS. As a result, the first engagement piece 45 is rotated in the same direction, and the second engagement piece 49 is rotated in the clockwise direction in the drawing via the connection lever 47, the connection rod 48 and the connection shaft 46. . As a result, the piston rods 27a and 41a of both the pressing cylinders 27 and 41 are protruded, and the pressing action on the first clamp member 28 and the second clamp member 36 is released.
[0029]
As shown in FIGS. 1 and 6, the second cylinder head processing machine 12 is equipped with a work holding device 51, by which the cylinder head W passes the intake hole Wh <b> 1 and the exhaust hole Wh <b> 2 on both sides. It is designed to be held in a state where it is directed to. A first hole processing device 52 is disposed opposite to one side of the work holding device 51, and the first hole processing device 52 is provided with a first tool 53 for internally processing the intake hole Wh <b> 1 of the cylinder head W. Yes. Further, a second hole machining device 54 is disposed opposite to the other side of the work holding device 51, and a second tool 55 for machining the exhaust hole Wh2 of the cylinder head W is provided in the second hole machining device 54. It has been.
[0030]
The workpiece holding device 51 is provided with a jig 56, and a regulating member 57 is disposed on the jig 56. The restriction member 57 is brought into contact with the upper surface Ws3 of the cylinder head W, whereby the cylinder head W is positioned at a predetermined position on the jig 56. A clamp arm 58 is rotatably supported by the jig 56 via a support shaft 59, and a clamp member 60 is attached to the tip thereof.
[0031]
Then, when the clamp arm 58 is pivotally disposed at the clamp position shown in FIG. 6, the clamp member 60 is pressed and brought into contact with the second machining surface Ws <b> 2 of the cylinder head W, and between the clamp member 60 and the regulating member 57. The cylinder head W is clamped. In this state, the tools 53 and 55 of the respective hole machining devices 52 and 54 are moved toward the cylinder head W while being rotated. As a result, the intake hole Wh1 and the exhaust hole Wh2 of the cylinder head W are simultaneously machined at the same station.
[0032]
Pilot pins 61 project from the spindle heads of both the hole drilling devices 52 and 54 so as to extend in parallel with the axes of the tools 53 and 55. Engagement bushes 62 are respectively fitted to the jigs 56 of the work holding device 51 so as to be detachable from the pilot pins 61. When the tools 53 and 55 of the respective hole machining devices 52 and 54 are moved toward the cylinder head W, both pilot pins 61 are inserted and engaged with the engagement bushes 62 on the jig 56. Accordingly, the possibility that the cylinder head W is rotated by the reaction force during the hole drilling of the cylinder head W and the jig 56 is rattled is suppressed.
[0033]
Next, the operation of the first cylinder head processing machine 11 will be mainly described in the processing system configured as described above.
Now, when the cylinder head W is carried in, the first clamp member 28 and the second clamp member 36 of the work holding device 20 are switched to the unclamping position as shown by the chain line in FIGS. In this state, when the cylinder head W is loaded onto the jig 25 via the workpiece loading device 16 and the first workpiece conveyance device 13, the upper surface Ws3 is brought into contact with the regulating member 26, and the cylinder head W is cured. It is positioned at a predetermined position on the tool 25.
[0034]
Thereafter, as indicated by solid lines in FIGS. 4 and 5, the first clamping member 28 is switched to the clamp position by the immersing operation of the first switching cylinder 31, and the second switching cylinder 38 is projected by the protruding operation. The second clamp member 36 is switched to the clamp position. In this state, the first and second clamping members 28 and 36 are pressed and moved toward the regulating member 26 by the immersing operation of the first and second pressing cylinders 27 and 41. As a result, the portion on the first machining surface Ws1 side of the cylinder head W is clamped between the clamp portion 30 and the regulating member 26, and the portion on the opposite side to the first machining surface Ws1 is clamped with the clamp portion 36a. It is clamped between the member 26.
[0035]
Then, in the clamped state of the cylinder head W, as indicated by a chain line in FIG. 4, the tools 22 and 24 of the first and second surface processing devices 21 and 23 are moved toward the cylinder head W while rotating. Is done. At the same time, the tools 22 and 24 of the surface processing devices 21 and 23 are relatively moved in the longitudinal direction of the cylinder head W. As a result, the first machining surface Ws1 and the second machining surface Ws2 of the cylinder head W are simultaneously machined at the same station.
[0036]
Thus, planar processing of the cylinder head W But When the operation is completed, the clamp members 28 and 36 are released from the pressed state by the protruding operation of both the pressing cylinders 27 and 41. At the same time, the first and second clamp members 28 and 36 are switched to the unclamping position by the protruding operation of the first switching cylinder 31 and the immersion operation of the second switching cylinder 38. In this state, the second workpiece transfer device 14 transfers the cylinder head W from the first cylinder head processing machine 11 to the second cylinder head processing machine 12 in the next process.
[0037]
The effects that can be expected from the above embodiment will be described below.
In the first cylinder head processing machine 11 of this embodiment, the cylinder head W is held so that the first processing surface Ws1 is directed upward by one side and the second processing surface Ws2 is directed to the other side. A work holding device 20 is provided. A first surface processing device 21 is disposed opposite to one side of the work holding device 20, and the first surface processing device 21 is provided with a first tool 22 for processing the first processing surface Ws1 of the cylinder head W. ing. A second surface processing device 23 is disposed opposite to the other side of the work holding device 20, and the second surface processing device 23 is provided with a second tool 24 for processing the second processing surface Ws2 of the cylinder head W. ing.
[0038]
The work holding device 20 is provided with a regulating member 26 that can contact the upper surface of the cylinder head W. A first clamp member 28 extends so as to bypass the first machining surface Ws1 of the cylinder head W, and a part of the first clamp member 28 is connected to the restriction member 26 so that the first of the cylinder head W. A clamp portion 30 for projecting a portion on the processing surface Ws1 side is provided so as to project. Further, the second clamp member 36 is extended toward the portion of the cylinder head W opposite to the first processing surface Ws 1, and the first processing of the cylinder head W is performed between the second clamp member 36 and the regulating member 26. The part opposite to the surface Ws1 is clamped.
[0039]
Therefore, the second machining surface Ws2 and the first machining surface of the cylinder head W are clamped by the regulating member 26 and the clamp members 28 and 36 without interfering with the tools 22 and 24. Ws1 can be processed simultaneously at the same station. Therefore, as compared with the case where the conventional configuration shown in FIG. 1B is adopted, as is clear from FIG. 1A, one work holding device 20, 51 is replaced with two machine tools 11 in the same station. , 23, 12, and 54, the number of stations is reduced, the number of transfer devices 13, 14, and 15 is reduced, and the configuration of the entire processing system can be simplified. Further, since the number of stations and the number of transfer devices 13, 14, and 15 are reduced, the installation space for the processing system can be greatly reduced. Furthermore, since it is not necessary to transport the cylinder head W or change the posture during the processing, the processing time can be shortened. Further, since the second machining surface Ws2 and the first machining surface Ws1 of the cylinder head W are simultaneously machined in a state where the cylinder head W is clamped on the workpiece holding device 20 at one machining station, both machining surfaces Ws1 are processed. , Ws2 with respect to the reference surface can be improved.
[0040]
In the first cylinder head processing machine 11 of this embodiment, the first and second clamps 28 and 36 are switched and placed on the work holding device 20 between the clamp position and the unclamp position, respectively. Second switching cylinders 31 and 38 are provided. Therefore, by switching the first clamp member 28 and the second clamp member 36 between the clamping position and the unclamping position in each switching cylinder 31, 38, the cylinder on the jig 25 of the work holding device 20. The head W can be easily attached and detached.
[0041]
-In the 1st cylinder head processing machine 11 of this embodiment, the 1st and 1st for pressing the 1st clamp member 28 and the 2nd clamp member 36 to the control member 26 side in the clamp position to the workpiece | work holding | maintenance apparatus 20. Two pressing cylinders 27 and 41 are provided. For this reason, by pressing the first clamp member 28 and the second clamp member 36 at the clamp position to the regulating member 26 side by the pressing cylinders 27 and 41, the portion on the first processing surface Ws1 side of the cylinder head W and The portion on the opposite side can be strongly clamped with the restricting member 26.
[0042]
In the first cylinder head processing machine 11 of this embodiment, the pressing action of the pressing cylinders 27 and 41 against the first clamp member 28 and the second clamp member 36 is released manually by the work holding device 20. A release mechanism 43 is provided. For this reason, by the manual operation of the release mechanism 43, the pressing action of the pressing cylinders 27 and 41 on the first clamp member 28 and the second clamp member 36 can be easily released as necessary.
[0043]
(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
In the processing system of the above embodiment, the second cylinder head processing machine 12 and the second workpiece transfer device 14 are omitted, the cylinder head W is carried into the first cylinder head processing machine 11, and the first processing surface Ws1 and It is configured to perform only the processing of the second processing surface Ws2.
[0044]
In the first cylinder head processing machine 11 of the above-described embodiment, the release mechanism 43 of the work holding device 20 is omitted, and the first and second clamp members 28 and 36 are only operated by the protruding operations of the pressing cylinders 27 and 41. It is configured to release the pressed state.
[0045]
In the embodiment, the first machining surface Ws1 and the second machining surface Ws2 of the cylinder head W are machined, but the upper surface or another surface is machined.
Matters other than those described in the claims in the technical idea grasped from the embodiment are as follows.
[0046]
・ A workpiece holding device that holds the cylinder head so that its processing surface is directed upward on one side and the lower surface is directed to the other side, and is disposed opposite to one side of the workpiece holding device. A first surface processing device having a first tool for processing the workpiece, and a second surface processing device having a second tool disposed on the other side of the work holding device and processing the lower surface of the cylinder head. Prepared,
The work holding device is provided with a restricting member that can contact the upper surface of the cylinder head and extended so as to bypass the processing surface of the cylinder head, and a part of the restricting member between the restricting member and the processing surface side of the cylinder head. The first clamp member having a clamp portion for clamping the portion is extended toward a portion on the opposite side of the cylinder head machining surface, and is disposed between the regulating member and the cylinder head machining surface on the opposite side. A cylinder head processing machine comprising a second clamp member for clamping a portion.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an entire processing system including a cylinder head processing machine embodying the present invention.
2 is an enlarged plan view showing a main part of the work holding device of the first cylinder head processing machine shown in FIG. 1;
3 is a front view of a main part of the work holding device in FIG. 2;
4 is a partial cross-sectional view taken along line 4-4 of FIG.
5 is a partial cross-sectional view taken along line 5-5 in FIG.
6 is an enlarged cross-sectional view of a main part showing the second cylinder head processing machine of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... 1st cylinder head processing machine, 20 ... Work holding | maintenance apparatus, 21 ... 1st surface processing apparatus, 22 ... 1st tool, 23 ... 2nd surface processing apparatus, 24 ... 2nd tool, 26 ... Restriction member, 27 ... First pressing cylinder constituting the pressing means, 28... First clamping member, 30... Clamping portion, 31... First switching cylinder constituting the switching means, 36. Second switching cylinder, 41 ... second pressing cylinder constituting the pressing means, 43 ... release mechanism constituting the releasing means, 44 ... release operating shaft, W ... cylinder head, Ws1 ... first machining surface, Ws2 ... Second processed surface.

Claims (3)

A workpiece holding device for holding the cylinder head so that the first machining surface is oriented in one direction and the other surface is oriented in the other direction;
A first surface processing device that is disposed opposite to one side of the workpiece holding device and has a first tool for processing the first processing surface;
A second surface processing device disposed opposite to the other side of the workpiece holding device and having a second tool for processing the second processing surface of the cylinder head,
In the work holding device,
A regulating member capable of contacting a part of the cylinder head;
A first clamp member formed so as to be substantially U-shaped in a planar shape so as to bypass the first machining surface of the cylinder head;
A projecting portion projecting from a part of the first clamp member, and a clamp portion for clamping a portion on the first machining surface side of the cylinder head between the regulating member;
A second clamp member that extends toward a portion of the cylinder head opposite to the first machining surface and clamps the portion of the cylinder head opposite to the first machining surface between the regulating member ; A featured cylinder head processing machine. 2. The cylinder head processing machine according to claim 1, wherein the work holding device includes switching means for switching and arranging the first clamp member and the second clamp member between a clamp position and an unclamp position, and a first clamp. A cylinder head processing machine comprising a pressing means for pressing the member and the second clamp member toward the regulating member at the clamp position . 3. The cylinder head processing machine according to claim 2 , wherein the work holding device is provided with a release means for manually releasing the pressing action of the pressing means on the first clamp member and the second clamp member . A featured cylinder head processing machine.

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