KR102643974B1 - A vertical lathe with tailstock - Google Patents

Abstract

The present invention relates to a vertical lathe using a headstock and tailstock to fix the center of the product and process the outer surface. The purpose is to miniaturize and lighten machine tools in response to changes in processing production lines. It includes a headstock that contacts the center of the bottom of the product to rotate the product, a tailstock that presses the center of the top of the product, and processing equipment that is placed on the side of the frame and is transferred to the x-axis and z-axis to process the outer surface of the product. , a vertical lathe using a tailstock is proposed, wherein the headstock, the tailstock, and the cylinder pressing the tailstock are arranged on the same line.

Description

A vertical lathe with tailstock}

The present invention relates to a vertical lathe that processes the outer surface of a product, and more specifically, to a vertical lathe that uses a headstock and a tailstock to fix the center of the product and processes the outer surface.

The CNC equipment system applies very expensive line centers, turning machines, horizontal and vertical lathes, etc. and configures a facility line suitable for the product. Even if a processing line suitable for mass production is built with expensive processing equipment, the replacement cycle of products in the domestic automobile and electronic industries is getting shorter, so it cannot be widely used and the processing line must be reconfigured. In order to easily reconfigure the processing line, it is necessary to develop a miniaturized lathe for the unit automation line.

A lathe, a representative machine tool, consists of a headstock, tailstock, carriage, tool rest, and transfer device, and is designed to fix the workpiece between the headstock and tailstock and receive rotational movement from the headstock. Referring to Figure 1, a lathe is typically composed of a horizontal lathe and a vertical lathe, and lathe processing is performed taking the size and weight of the product into consideration. Horizontal lathes and vertical lathes are mounted on a column on a frame and perform cutting processing while conveying, and are structured in such a way that the main axis spindle is seated on the frame.

The size of the horizontal lathe including the tailstock is determined by the swing size of the product, and even if the processing point is small, it is determined by the size of the product shape, which causes the problem of using large and expensive horizontal lathes. Accordingly, in order to miniaturize the lathe, vertical lathes are considered rather than horizontal lathes.

Referring to patent document Republic of Korea Patent No. 10-1345983, a vertical lathe including a tailstock is presented. However, the configuration of the tailstock fixing bracket for supporting the tailstock device, the tailstock base, and the hydraulic cylinder for transporting the tailstock are deviated from the center of the tailstock, which has the disadvantage of increasing the size of the equipment. Therefore, there is a need to develop a miniaturized vertical lathe that includes a tailstock.

Republic of Korea Patent No. 10-1408436 (2014.06.10, folding tailstock device for vertical lathe)

Therefore, the present invention was created to solve the problems of the prior art as described above, and the purpose of the present invention is to propose a vertical lathe with a more precise, smaller, and lighter tailstock of machine tools in response to changes in processing production lines. do.

In addition, the main axis is mounted inside the frame, the processing equipment transfer axis is attached to the frame, and the core unit is directly attached inside the frame to propose a vertical lathe with a miniaturized tailstock.

The present invention includes a headstock in which the rotation axis is disposed perpendicular to the ground and rotates the product in contact with the center of the lower surface of the product, and a headstock portion including a frame for supporting the headstock, disposed on the upper surface of the frame, and A tail pressure unit including a tailstock that presses the center of the upper surface, and a processing unit disposed on a side of the frame and including processing equipment that is transferred in the x-axis and z-axis to process the outer surface of the product, the headstock, the It is characterized in that the tailstock and the cylinder pressing the tailstock are arranged on the same line.

In addition, the tail pressure unit includes a lower frame disposed on the upper surface of the frame, an upper frame disposed at regular intervals on the upper side of the lower frame, a plurality of guide shafts connecting the lower frame and the upper frame, and the same as the headstock. A tailstock disposed on a line and pressing the upper surface of the product, a guide coupled to the tailstock in the center and moving in the vertical direction along the guide shaft, and a center jig disposed at the end of the tailstock and in contact with the center of the upper surface of the product. Includes.

In addition, the guide shaft is arranged to be spaced apart from the tailstock in the circumferential direction to distribute the upper load.

In addition, the tailstock includes a cylinder vertically disposed on the upper side of the upper frame, a spacer coupled to an end of the cylinder and disposed through the upper frame, a flange coupled to the circumferential surface of the spacer, and a live center inserted in the center. , a housing having one end coupled to the lower surface of the guide and the other end coupled to the flange, and an adapter coupling the flange and the housing.

In addition, the adapter is characterized in that it is replaced so that the tailstock can pressurize depending on the size of the processed product.

Additionally, it includes a bush disposed between the inner surface of the shaft hole and the guide shaft, a cover coupled to the upper and lower surfaces of the guide to fix the position of the bush, and a dust seal disposed between the guide shaft and the cover.

In addition, the processing unit includes an , and a z-axis transfer unit disposed on one side of the frame and coupled to the bracket to transfer the processing equipment in the height direction.

In addition, the x-axis transfer unit is disposed on the upper side of the base so as not to intersect the z-axis transfer unit, and the z-axis transfer unit is disposed on the lower side of the base.

In addition, the z-axis transfer unit is disposed on one side of the frame, and the top of the z-axis transfer unit is disposed at the same level or lower than the upper surface of the frame.

In addition, the tool coupling part is characterized in that a coupling block is coupled to the bottom so that the position of the processing equipment can be changed in the height direction.

According to the present invention, the headstock, the tail stock, and the cylinder that presses the tail stock are arranged on the same line, which has the effect of miniaturizing and lightweighting the vertical lathe to which the tail stock is applied.

In addition, the main axis is mounted inside the frame, the processing equipment transfer axis is attached to the frame, and the core unit is directly attached to the inside of the frame, which has the effect of miniaturizing the vertical lathe using the tailstock.

Figure 1 is a schematic diagram of a typical horizontal shelf and a vertical shelf.
Figure 2 is a front view of the present invention
Figure 3 is a side view of the present invention
Figure 4 is a front view of the core pressure portion of the present invention
5 is a guide of the present invention
Figure 6 is an enlarged view of Figure 4
Figure 7 is a front view of the main shaft of the present invention
Figure 8 is a schematic diagram of the transfer unit of the present invention
Figure 9 is a front view of the transfer unit of the present invention
Figure 10 is a side view of the transfer unit of the present invention
Figure 11 is a front view of the x-axis transfer unit of the present invention
Figure 12 is a front view of the z-axis transfer unit of the present invention

The present invention relates to a vertical lathe, and focuses on the precision, miniaturization, and weight reduction of units around machine tools in response to changes in processing production lines. It is equipped with a spindle rotation type and vertical transfer type simultaneously on the frame and a tailstock. We present a vertical lathe using a tailstock developed from a vertical space-saving transfer lathe.

Hereinafter, a vertical lathe using a tailstock according to the present invention will be described in detail with reference to the attached drawings.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes included in the spirit and technical scope of the present invention.

[1] Configuration diagram of the present invention

Figure 2 is a front view of the present invention. Referring to FIG. 2, the rotation axis is disposed perpendicular to the ground and includes a headstock 210 that rotates the product by contacting the center of the lower surface of the product, and a frame 220 that supports the headstock 210. Unit 200, a tail pressure unit 100 disposed on the upper surface of the frame 220 and including a tailstock 110 that presses the center of the upper surface of the product, and disposed on the side of the frame 220 and along the x-axis , includes a processing unit 300 that is transferred along the z-axis and includes processing equipment that processes the outer surface of the product.

The frame 220 is placed on the ground or is spaced apart from the ground with legs included on the bottom, and the headstock 210 disposed inside the frame 220 is positioned on the top of the frame 220 so that one end touches the bottom of the product. It is placed through. At one end of the headstock 210, a jig is placed to rotate in contact with the lower surface of the product, and at the other end of the headstock 210, a gear motor for rotating the headstock is placed within the frame 220. The housing formed on the circumference of the headstock 210 has a flange formed on the circumference, and the flange formed on the housing is coupled to the upper surface of the lower frame 130 so that the position of the headstock 210 is stably disposed.

The tail pressure unit 100 includes a lower frame 130 disposed on the upper surface of the frame 220, an upper frame 120 spaced apart in the height direction from the lower frame 130, and a lower frame 130 and an upper frame 120. It includes a plurality of guide shafts 140 that are connected.

The headstock 210 is disposed through the center of the lower frame 130 to support the lower surface of the product, and the tailstock 110 is disposed to protrude through the center of the upper frame 120. The tailstock 110 is disposed on the same line as the headstock 210 and presses the upper surface of the product placed on the headstock 210. The tailstock 110 is coupled to a guide 150 coupled with a plurality of guide shafts 140 and moves in the vertical direction.

At this time, the tailstock 110 receives force from the cylinder 111 arranged vertically on the upper surface of the upper frame 120 to press the upper surface of the product, and the cylinder, tailstock 110, and headstock 210 are placed in a straight line.

A plurality of guide shafts are spaced apart in the circumferential direction of the tailstock, and the cylinders are arranged in a straight line with the tailstock and headstock, which has the effect of reducing the overall size of the vertical lathe.

The processing unit 300 is disposed on one side of the frame 220 and includes processing equipment for processing products. The processing unit 300 includes a z-axis transfer unit 340 that transfers the processing equipment in the height direction and an x-axis transfer unit 320 that transfers the processing equipment in the direction of the center of the product.

The z-axis transfer unit 340 is coupled to one side of the frame 220 and located below the lower frame 130, and is coupled to the base 330 to which the x-axis transfer unit 320 is coupled to transfer in the height direction. I order it. The x-axis transfer unit 320 is coupled to the upper surface of the base 330 and the tool coupling unit 310, allowing processing equipment to approach the product.

At this time, the base 330 and the You can access the bottom of the product combined with .

Figure 3 is a side view of the present invention. Referring to FIG. 3, a main shaft unit 200 including a frame 220 and a headstock 210 is disposed, and a tail pressure unit 100 including a tailstock 110 is disposed on the upper side of the main shaft unit 200. A processing unit 300 including processing equipment is disposed on one side of the main shaft unit 200.

The cylinder that transports the tailstock 110 receives power using hydraulics, pneumatics, etc., and a limit switch is placed on the upper side of the cylinder to check the stroke of the cylinder.

In the processing unit 300, a z-axis transfer unit 340 is disposed on the lower side with respect to the base 330, and an x-axis transfer unit 320 is disposed on the upper side. At this time, the stroke distance of the z-axis transfer unit 340 is limited depending on the size of the frame 220, but the tool coupling unit 310 coupled to the x-axis transfer unit 320 is connected to the coupling block 311 as necessary. Placed together, processing equipment can reach the top of the product.

Because of this, the length of the guide shaft is not limited and has the advantage of being able to process long products.

Figure 4 is a deep pressure portion of the present invention. Referring to FIG. 4, the tail pressure unit 100 includes a lower frame 130 disposed on the upper surface of the frame 220, an upper frame 120 disposed at a predetermined interval on the upper side of the lower frame 130, and the lower A plurality of guide shafts 140 connecting the frame 130 and the upper frame 120, a tailstock 110 disposed on the same line as the headstock 210, and a shaft into which the guide shaft 140 is inserted. A guide 150 that includes a center hole 152 where a hole 151 and the tailstock 110 are coupled, moves in the vertical direction along the guide shaft 140, and an end of the tailstock 110. It is placed in and includes a center jig (117) that contacts the center of the upper surface of the product.

The present invention minimizes the load on the upper part of the vertical shelf and secures structural rigidity by arranging a plurality of guide shafts 140 of the tailstock 110.

The tailstock 110 includes a cylinder 111 vertically disposed on the upper side of the upper frame 120, a spacer 112 coupled to an end of the cylinder 111 and disposed through the upper frame 120, and A flange 113 coupled to the circumferential surface of the spacer 112, a housing in which a live center 116 is inserted in the center, one end of which is coupled to the lower surface of the guide 150, and the other end of which is coupled with the flange 113. , and an adapter 114 that couples the flange 113 and the housing.

The upper frame 120 has a hole formed in the center so that the piston of the cylinder 111 can descend, and the tailstock 110 and the guide 150 combined with the tailstock 110 move in the vertical direction according to the movement of the piston. is moved to

The spacer 112 is coupled to the piston of the cylinder 111 and connected to the tail pressure housing 115 by a flange 113 and an adapter 114. The core housing 115 has a live center 116 coupled to the inside, and is coupled to the center hole 152 of the guide 150. At this time, the core housing 115 has a flange formed on its outer peripheral surface and is coupled to the lower surface of the guide 150.

The adapter 114 connects the flange 113 and the tail pressure housing 115, but the positions of the live center 116 and the center jig 117 can be changed by changing the adapter 114 to a different size depending on the product. That is, the stroke distance of the cylinder 111 is limited, so that pressure can be applied by changing the adapter 114 according to the size of the processed product.

Figure 5 is a guide to the present invention. Referring to FIG. 5, the guide 150 is formed in a plate shape, and a center hole 152 to which the tailstock 110 is coupled is formed in the center, and the guide shaft 140 is spaced apart from the center hole 152. A shaft hole 151 to be inserted is formed. The area where the center hole 152 and the shaft hole 151 are formed has a certain thickness, which has the effect of reducing shaking when moving up and down. Between adjacent shaft holes 151 and between the center hole 152 and the shaft hole 151 include supports 153 connected to each other.

Since the support 153 is formed perpendicular to the plate, it has the effect of reducing deformation even when the guide 150 receives force when moving in the vertical direction.

Figure 6 is an enlarged view of Figure 4. Referring to FIG. 6, the guide 150 is coupled to the bush 154 disposed between the inner surface of the shaft hole 151 and the outer surface of the guide shaft 140, and the upper and lower surfaces of the shaft hole 151 to form the bush 153. It includes a cover 155 that fixes the position, and a dust seal 156 disposed between the guide 150 shaft 213 and the cover 155.

The bush 154 is disposed inside the shaft hole 151 to prevent the guide 150 from being worn when being transported up and down along the guide shaft 140. The cover 155 is coupled to the upper and lower surfaces of the shaft hole 151 and extends to the upper and lower surfaces of the bush 153 to prevent the bush 153 from being separated. Additionally, a dust seal 156 is disposed between the cover 155 and the guide shaft 140 to prevent foreign substances from entering the shaft hole 151.

Figure 7 shows the main axis of the present invention. Referring to FIG. 7, the headstock 210 is disposed within the frame 220, and the rotation axis is disposed perpendicular to the ground. One end of the headstock 210 protrudes from the upper center of the frame 220, and a flange formed on the outer peripheral surface of the headstock 210 is coupled to the lower frame 130 to fix the position of the headstock 210. A gear motor 219 is coupled to the lower side of the headstock 210 to rotate the shaft 213 of the headstock 210. A jig 212 in contact with the product is disposed on the upper side of the shaft 213. At this time, the jig 212 has a guide block 211 protruding so that it can be easily connected to the product and transmit force.

The spindle housing 216 of the headstock 210 has a flange formed on its outer peripheral surface and is coupled to the upper surface of the lower frame 130 to fix the position of the headstock 210. Inside the main shaft housing 216, a plurality of bearings 214 and collars 215 are arranged to support the center of the shaft 213, and the shaft 213 easily transmits power from the gear motor 219. A coupling 218 and a key 217 are placed to receive it.

The main shaft unit 200 is equipped with a monitoring system for driving status and diagnosis of the main shaft by placing a plurality of sensors. When the main shaft unit 200 is driven, status data such as vibration, temperature, and load generated in real time can be collected to determine whether there is an abnormality in the rotating body.

Figure 8 is a schematic diagram of the processing part of the present invention. Figure 8(a) shows a case where the processing part of an existing vertical lathe is placed on a vertical lathe to which a tailstock is applied. The headstock 210 is disposed on the frame 220, and the tailstock 110 is disposed on the upper surface of the headstock 210 by the guide shaft 140. At this time, the existing processing unit is placed on the frame 220, and the z-axis transfer unit 340 transfers the x-axis transfer unit 320 in the height direction. Referring to Figure 1(b) for a moment, the x-axis transfer unit 340 The transfer unit is transferred in the left and right directions, causing a problem of interference with the guide shaft 140.

Figure 8(b) is a schematic diagram attempting to solve the problem of Figure 8(a). Change the direction of movement so that the The x-axis transfer unit 320 was placed on the upper surface of 340. Through this, the x-axis transfer unit 320 was prevented from interfering with the z-axis transfer unit 340 and the guide shaft 140.

However, it is structurally difficult for the z-axis transfer unit 340 disposed on the upper surface of the frame 220 to transfer the x-axis transfer unit 320 to the lower surface of the product placed on the headstock 210.

Figure 8(c) is a schematic diagram intended to solve the problem of Figure 8(b), and is a schematic diagram of the processing unit applied to the present invention. The z-axis transfer unit 340 is disposed on the side of the frame 220 so that the x-axis transfer unit 320 processes up to the lower surface of the product placed on the headstock 210. The z-axis transfer unit 340 is disposed on one side of the frame 220, and the upper end of the z-axis transfer unit 340 is disposed equal to or lower than the upper surface of the frame 220. Through this, the z-axis transfer unit 340 has the effect of being able to transfer the x-axis transfer unit 320 disposed on the upper side to the bottom of the product.

Referring briefly to FIG. 3, the x-axis table 321 may have an equipment coupling portion including a coupling block 311 disposed on its upper surface. Since the stroke distance of the z-axis transfer part of the processing unit 300 is limited, the tool coupling unit 310 with the coupling block 311 coupled to the x-axis transfer unit is arranged according to the size of the product to process the product. .

For example, when the stroke distance of the z-axis transfer part is 100mm, 260mm products cannot be processed, so a combination block is placed to enable 260mm products to be processed.

Figure 9 is a front view of the processing part of the present invention. Referring to Figure 9, the processing unit is disposed on one side of the frame 220, and processes the outer surface of the product by transferring the processing equipment to the x-axis and z-axis.

The processing unit is moved in the vertical direction by the z-axis transfer unit 340 and the z-axis transfer unit 340, which are coupled to one side of the frame 220 and move the processing equipment in the vertical direction, and approach the processing equipment to the center of the product. Or it includes an x-axis transfer unit 320 that is spaced apart.

The x-axis transfer unit 320 and the z-axis transfer unit 340 are arranged on the upper and lower surfaces of the base 330, and a plurality of brackets 343 are combined on the lower surface of the base 330, and the bracket 343 is transported in the height direction by the z-axis transfer unit 340. The z-axis transfer unit 340 is disposed on one side of the frame 220 and moves the base 330 in the vertical direction by operating the z-axis motor 342. The x-axis transfer unit 320 is disposed on the upper surface of the base 330, and the x-axis table 321 coupled with the processing equipment is transferred by the Since the x-axis and z-axis are separated based on the base 330, there is an advantage that interference does not occur with each other.

Figure 10 is a side view of the processing part of the present invention. Referring to Figure 10, the z-axis transfer unit 340 moves the z-axis table 341 in the vertical direction by the movement of the z-axis motor 342 disposed at the bottom center, and is coupled to the z-axis table 341. The bracket 343 is moved in the vertical direction. The z-axis table is supported by LM guides placed on both sides of the motor shaft to prevent it from shaking when moving.

The x-axis transfer unit 320 disposed on the top of the bracket 343 also transfers the x-axis table 321 by a motor, and the do.

Figure 11 is a front view of the x-axis transfer unit of the present invention. Referring to FIG. 11, the x-axis transfer unit 320 disposed on the upper surface of the base 330 includes an Includes. As the x-axis motor 322 rotates, the x-axis table 321 approaches or moves away from the product along the LM guides 150 arranged on both sides.

The x-axis table 321 has a curved lower surface, and the position of the table is determined and controlled through a plurality of x-axis limit switches 323 disposed on the lower side of the table.

Referring briefly to FIG. 3, the x-axis table 321 may have an equipment coupling portion including a coupling block 311 disposed on its upper surface. Since the z-axis travel distance of the processing unit 300 is limited, the tool coupling unit 310 including the coupling block 311 is coupled to transfer the processing equipment in order to process the upper side of the product.

Figure 12 is a front view of the z-axis transfer unit of the present invention. Referring to FIG. 12, the z-axis transfer unit 340 is disposed on one side of the frame 220. The z-axis transfer unit 340 corresponds to the height of the frame 220 so that the processing equipment is located below the product.

The z-axis table 341 is moved up and down by the z-axis motor 342, and the bracket 343 coupled to the lower surface of the base 330 is coupled to the z-axis table 341 to move the base 330 up and down. moves in the direction At this time, the base 330 and the bracket 343 may be bolted together or formed as one body. One surface of the z-axis table 341 is curved, and a plurality of z-axis limit switches 344 that detect the curve are disposed to determine and control the position of the z-axis table 341.

The present invention is not limited to the above-described embodiments, and the scope of application is diverse. Of course, various modifications and implementations are possible without departing from the gist of the present invention as claimed in the claims.

100: Deep pressure part
110: tailstock
111: cylinder 112: spacer 113: flange
114: Adapter 115: Deep pressure housing 116: Live center
117: Center jig
120: Top frame 130: Bottom frame 140: Guide shaft
150: Guide
151: Shaft hole 152: Center hole 153: Support
154: Bush 155: Cover 156: Dust seal
200: main shaft
210: headstock
211: Guide block 212: Jig 213: Shaft
214: Bearing 215: Collar 216: Main shaft housing
217: key 218: coupling 219: gear motor
220: frame
300: processing part
310: Tool coupling part 311: Combination block
320: x-axis transfer unit
321: x-axis table 322: x-axis motor 323: x-axis limit switch
330: base
340: z-axis transfer unit
341: z-axis table 342: z-axis motor 343: bracket
344: z-axis limit switch

Claims (10)

A headstock portion whose rotation axis is disposed perpendicular to the ground and includes a headstock that rotates the product by contacting the center of the lower surface of the product, and a frame that supports the headstock;
A tail pressure unit disposed on the upper surface of the frame and including a tailstock that presses the center of the upper surface of the product; and
A processing unit disposed on the side of the frame and including processing equipment that is transferred in the x-axis and z-axis to process the outer surface of the product,
The core pressure part
A lower frame disposed on the upper surface of the frame,
An upper frame disposed at regular intervals above the lower frame,
A plurality of guide shafts connecting the lower frame and the upper frame,
A tailstock arranged on the same line as the headstock and pressing the upper surface of the product,
A guide coupled to the tailstock at the center and moving in the vertical direction along the guide shaft, and
A vertical lathe using a tailstock further including a center jig disposed at the end of the tailstock and in contact with the center of the upper surface of the product.
delete According to clause 1,
A vertical lathe using a tailstock, wherein the guide shaft is arranged to be spaced apart from the tailstock in the circumferential direction to distribute the upper load of the tailstock.
The method of claim 1, wherein the tailstock
A cylinder disposed vertically on the upper side of the upper frame,
A spacer coupled to the end of the cylinder and disposed through the upper frame,
A flange coupled to the circumferential surface of the spacer,
A tail pressure housing in which a live center is inserted in the center, one end of which is coupled to the lower surface of the guide, and the other end of which is coupled with the flange, and
A vertical lathe equipped with a tailstock including an adapter that couples the flange and the tailstock housing.
According to clause 4,
A vertical lathe with a tailstock, characterized in that the adapter is replaced according to the size of the product so that the tailstock can pressurize the product.
The method of claim 4, wherein the guide
A center hole into which the deep pressure housing is inserted in the center,
It includes a shaft hole into which the guide shaft is inserted,
A bush disposed between the inner surface of the shaft hole and the guide shaft,
A cover coupled to the upper and lower surfaces of the guide to fix the position of the bush, and
A vertical lathe equipped with a tailstock including a dust seal disposed between the guide shaft and the cover.
delete delete A headstock portion whose rotation axis is disposed perpendicular to the ground and includes a headstock that rotates the product by contacting the center of the lower surface of the product, and a frame that supports the headstock;
A tail pressure unit disposed on the upper surface of the frame and including a tailstock that presses the center of the upper surface of the product; and
A processing unit disposed on the side of the frame and including processing equipment that is transferred in the x-axis and z-axis to process the outer surface of the product,
The processing department
An x-axis transfer unit that transports the tool joint to which the processing equipment is connected so that it approaches or moves away from the center of the product,
A base disposed on the lower surface of the x-axis transfer unit,
a plurality of brackets disposed on the lower surface of the base, and
It is disposed on the lower side of the base and is coupled to the bracket, further comprising a z-axis transfer unit that transfers the processing equipment in the height direction,
The z-axis transfer unit is disposed on one side of the frame, and the upper end of the z-axis transfer unit is disposed at the same level or lower than the upper surface of the frame.
According to clause 9,
The tool coupling part is a vertical lathe using a tailstock, characterized in that a coupling block is coupled to the bottom so that the processing equipment changes position in the height direction.

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