KR20000026763A - Milling device for pipe seam - Google Patents

Abstract

PURPOSE: A milling device for a pipe seam is provided to increase work efficiency and productivity by accurately treating various processed elements and by automating steps for carrying in and out and treating. CONSTITUTION: A pipe(700) transferred by a transfer roller unit(1) is rotated and centered up to a treating position by a first chasing sensor and an up rolling unit(2) and is supported and clamped by a clamper(3) and a stopper(4). Also, a first and a second touch roller of a first and a second touch roll unit, a second tracking sensor and a moving unit(6) find the treating position and a spindle unit(5) seams the pipe. A chip is transferred to a chip box(81) by a chip conveyor unit(8) and a tool replacing device(9) replaces a tool when the tool is old or a work piece is changed.

Description

Pipe Shim Milling Equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe shim milling apparatus, and more particularly to a pipe shim milling apparatus which performs seam processing on an outer weld to prevent welding defects before welding an outer weld of an inner welded pipe during manufacture of the pipe.

In general, a pipe manufacturing process includes an improvement angle process of processing an angle of improvement on both ends of welded steel plates by introducing an iron plate, a bending process of bending the improved steel plate, and one side of the bent iron plate, that is, an angle of improvement. An internal welding process for butt welding the inner part of a pipe, a shim processing process for seam processing an outer portion of a pipe subjected to an improvement angle processing, and an external welding for welding the outer improvement angle processing portion of the seam processed pipe. And a discharge step of discharging the completed pipe.

During the pipe process, the process of processing the bent iron plate in order to prevent welding failure is a seam process, when the inner part is welded after bending the iron plate, including slug or air bubbles on the opposite side (outer side) The welding part is generated, and if the part is welded again, a serious defect occurs in the material of the pipe, such as a crack part in the longitudinal direction, which causes welding failure, and thus, a core machining is required to prevent this. In addition, in order to prevent the front / rear parts (the beginning and the end of the part of the seam processing part) of the pipe welded internally by the internal welding process during the seam processing to be partially destroyed by the processing tool, Install the tap plate.

Conventionally used cutting device for seam processing is a pipe welded inside and moved by a conveyor to a processing position by a crane, and rotates the moved pipe by a pipe turning roll to move the processing part in the lower direction (with a processing tool) 6 o'clock), and fix the pipe by clamping the tap plate installed at the front / rear part of the pipe where the processing part is set downward in the left / right and upper part with hydraulic cylinder, and then operating the processing tool. It was made to perform seam processing.

However, the conventional shim cutting device transfers the pipe to the machining position by a crane, so the transfer time is long, and the movement axis of the machining tool is one axis, making it impossible to process pipes other than circular pipes, that is, square pipes and the like. And, since each operation is made by manual operation, there was a problem that the worker should always wait.

In addition, there is no separate device that can track the deformed parts generated during welding, so the work must be stopped and checked visually, or the camera must be attached to the tool moving device at any time. As a result, there are various problems such as lowering of work efficiency.

The present invention has been made in consideration of the above problems, the object of which can be processed a variety of workpieces, precision processing is possible, fully automated automation of import / export and processing pipe core that can improve the work efficiency and productivity It is to provide a milling device.

The present invention is a shim milling apparatus for seam processing the outer welded portion by importing the inner welded pipe after bending the pipe during manufacture; The shim milling device includes a plurality of feed rollers for carrying in a workpiece; An up-rolling unit installed between the feed rollers to rotate and center the workpiece to the machining position; A plurality of clamping units installed at upper ends of the main support installed at one side of the transfer roller part to clamp the centered workpiece; A stopper part installed between the feed roller part and the feed roller part to clamp and support the front end of the centered workpiece; A moving unit sliding along a bed installed on the other side of the transport roller part so as to be symmetrical with the main support around the transport roller part; A spindle unit moving by the mobile unit and processing a workpiece; First and second touch roll units installed on one side of the mobile unit so as to be located at both sides of the spindle unit, respectively, to grasp the processing position of the workpiece; A chip conveyor unit installed to be positioned below the transfer roller unit and a bed to transfer chips generated by processing of a workpiece to a chip box; It is provided between the feed roller and the feed roller portion parallel to the roller is provided with a tool changer for exchanging the tool of the spindle unit is provided to provide a pipe shim milling apparatus for seam processing the imported pipe.

1 is a process diagram of the overall pipe manufacturing

2 is an exemplary view showing a configuration according to the present invention

Figure 3 is an illustration of one side of the present invention

4 is an exemplary view of a bed according to the present invention.

Figure 5 is an illustration of an up rolling unit showing a configuration according to the present invention

6 is a block diagram of the stopper according to the present invention

7 is an exemplary block diagram showing a configuration according to the present invention.

Figure 8 is an illustration of a spindle unit showing a configuration according to the present invention

9 is an exemplary view of the X-axis moving unit showing the configuration according to the present invention

10 is an exemplary view showing a Y-axis moving unit showing the configuration according to the present invention

11 is an exemplary view illustrating a Z-axis moving unit showing the configuration according to the present invention.

12 is an exemplary view of a touch roll unit showing a configuration according to the present invention.

13 is an exemplary view of a tool according to the present invention.

Figure 14 is an illustration of a tool changer showing a configuration according to the present invention

* Explanation of symbols for main parts of the drawings

(1): Feed roller unit (2): Up rolling unit

(3): clamping unit (3 '): main support

(4): Stopper part (5): Spindle unit

(6): mobile unit (6 '): bed

(7): 1st touch roll unit (7 '): 2nd touch roll unit

(8): chip conveyor (9): tool changer

(11): roller 12: drive motor

(13): support (14): inclined guide

21: idler roller portion 22: turning roller portion

(31): Fastener (31 '): Limit switch

(32): hydraulic cylinder 33: clamping jaw

(34): rod (41): support frame

(42): 1st hydraulic cylinder 43: clamp part

(51): first axis of rotation 52: second axis of rotation

53: third rotating shaft 54: drive motor

(55): pulley (56): pulley belt

57: Tool 58: Spindle Case

(59): bearing (61): X axis moving part

(61 '): rack (61a, 61b): pulley

61c: pulley belt 62: Y-axis moving part

63: Z-axis moving portion 71: first frame

71 ': second frame 72: first touch roller

72 ': second touch roller 73: first hydraulic cylinder

73 ': 2nd hydraulic cylinder 74: 1st guide

(74 '): Second guide 75: First case

(75 '): 2nd case (76'): 1st tracking sensor

77 ': second tracking sensor 78': liner scale

(79 '): limit switch 81: chip box

91: rail bracket 92: guide

(93): rodless cylinder 94: post portion

(95): Pellet (100): Improvement angle machining process

(200): bending process (211, 221): hydraulic motor

(212, 222): first gear (221 '): electric motor

(213, 223): Ball screw (214): Sliding part

215: idler roller 224: sliding part

(225): turning rollers (216, 226): moving frame

(217, 227): hydraulic cylinders (218, 228): fixed frame

(229): rotating shaft (300): internal welding process

(311): Guide hole 312: Dog

(400): seam processing process (431): main body

(432): second hydraulic cylinder (433): clamp

(434): Support block (435): Block

436: First Rod 437: Second Rod

(500): external welding process (511): pulley

512: first b gear 521: second a gear

522: second b gear 531: third a gear

(600): discharge process (611): the first worm gear

612: First Axis 613: First Pinion

(614): connecting gear (614 '): hydraulic cylinder

615: second worm gear 616: second axis

617: second pinion 618: X-axis table

(618 '): Bearing (618 "): Guide

(621): second transfer motor 622: horizontal ball screw

623: horizontal slide 624: horizontal support

625: bearing 626: mobile

626 ': Bearing 626 ": Guide

(627, 628): Pulley (629): Pulley Belt

(631): third transfer motor (631): vertical ball screw

632: vertical slide 634: vertical support

635: bearing 636: vertical hydraulic cylinder

(637): Joint 638: Z axis table

(638 '): Bearing 700: Pipe

911: limit switch 912: dog

(951): Follow Cam

Figure 1 shows the overall manufacturing process of the pipe, the pipe manufacturing process is an improved angle processing step 100 for processing the angle of improvement in the welding portion of both ends of the iron plate to be welded when the pipe is introduced into the iron plate, and the improved machining Bending process 200 for bending the steel plate in the shape of a pipe, and both ends of welded ends of the steel plate bent in the pipe shape, that is, the inside of butt welding the inner portions of both ends of the iron plate bent in contact with each other in a pipe shape Welding process 300, seam processing process for seam processing the outer portion of the pipe welded and the inner portion is improved angle machining, and the outside of the seam improvement site of the seam processed pipe outside It consists of a welding process 500 and the discharge process 600 which discharges the said completed pipe.

Figure 2 is an exemplary view showing a configuration according to the present invention, Figure 3 is an illustration of one side of the present invention, the present invention is a plurality of transport roller unit 1 and a transport roller unit for carrying the workpiece (1) is installed between the up-rolling unit (2), which is installed between (1) to rotate and center the workpiece to the processing position, and the upper end of the main support (3 ') installed to be located on one side of the feed roller (1) And a plurality of clamping units (3) for clamping the centered workpiece, and a stopper portion (4) installed between the transfer roller portion (1) and the transfer roller portion (1) to clamp / support the front end of the centered workpiece; And a spindle unit 5 for processing the workpiece by sliding along the bed 6 'installed on the other side of the transfer roller part 1 so as to be symmetrical with the main support 3', and to the bed 6 '. Connected and installed to move spindle unit (5) The key is provided with a movement unit 6, first and second touch roll units 7 and 7 'installed at one side of the movement unit 6 to grasp the state of the material, and the transfer roller unit 1 and the bed ( 6 ') is installed in the lower portion of the chip conveyor unit (8) for transferring the workpiece chip generated by the machining of the spindle unit 5 to the chip box 81, and transported in parallel with the transfer roller unit (1) It is comprised between the roller part 1 and the feed roller part 1, and the tool changer 9 which replaces the tool of the spindle unit 5. As shown in FIG.

The conveying roller part 1 is to convey the pipe after the internal welding, the roller 11 in contact with the pipe as shown in Figure 6, the drive motor 12 for driving the roller 11, A support 13 on which the roller 11 and the driving motor 12 are installed, and an inclined guide 14 installed on one side of the support 13 so as to be located at one side of the roller 11 to facilitate a pipe transfer. Consists of

The up rolling unit (2) is to determine the position of the pipe for the pipe seam milling process, as shown in Figure 5a, 5b is composed of idle roller portion 21, turning roller portion 22, An idle roller portion 21 or a turning roller portion 22 is installed between the plurality of roller portions.

The idle roller portion 21 is a hydraulic motor 211 is installed below the moving frame 216, a ball screw 213 for receiving the driving force of the hydraulic motor 211 by the first gear 212, The driving force of the hydraulic motor 211 is received by the ball screw 213, the sliding portion 214 sliding along the ball screw 213, and the idle roller is rotatably installed on the sliding portion 214 ( 215, a hydraulic cylinder 217 for operating the moving frame 216 up and down, and a fixed frame 218 in which the hydraulic cylinder 217 is installed while maintaining a constant interval.

The turning roller 22 may include a hydraulic motor 221 installed under the moving frame 226, a ball screw 223 receiving the driving force of the hydraulic motor 221 by the first gear 222, and The driving force of the hydraulic motor 221 is received by the ball screw 223 is installed on one side of the sliding frame 224 sliding along the ball screw 223 and the moving frame 226 in which the hydraulic motor 221 is installed. The electric motor 221 ′, a worm gear (not shown) that transmits the driving force of the electric motor 221 ′ to the rotating shaft, and is rotatably installed on the sliding part 224 by the rotating shaft 229. The turning roller 225, the hydraulic cylinder 227 for operating the moving frame 226 up and down, and the hydraulic cylinder 227 is composed of a fixed frame 228 is installed at a constant interval.

Two sliding parts 214 and 224 are provided on the ball screws 213 and 223, respectively, and threads in opposite directions are formed to be symmetrical with each other. In operation, the two sliding parts 214 and 224 are moved. Slide them in opposite directions.

The clamping unit 3 is installed at the upper end of the main support 3 ', and as shown in FIG. 3, a fastener 31 fixed and installed on the main support 3' and the fastener ( 31 is installed in the hydraulic cylinder 32, the clamping jaw 33 is operated by the hydraulic cylinder 32 to contact the upper pipe, and the hydraulic cylinder 32 is connected to guide the clamping jaw 33 The rod 34 is comprised.

One side of the rod 34 is connected to the hydraulic cylinder 32, and the middle part is inserted into the guide hole 311 of the fastener 31, so that the guide of the fastener 31 when the hydraulic cylinder 32 is operated. A dog 341 which vertically slides along with the clamping jaw 33 along the hole 311 and operates the limit switch 31 'of the main support 3' is installed at the other side to adjust the end stroke. That is, the clamping unit 3 needs to control the stroke of the hydraulic cylinder 32 according to the size of the workpiece to be carried in. The clamping jaw 33 attached to the lower end of the hydraulic cylinder 32 is applied to the workpiece at a constant pressure. When contacted, the pressure switch (not shown) is operated to stop the operation of the hydraulic cylinder 32. When the clamping jaw 33 is raised by the hydraulic cylinder 32 after the processing of the workpiece is finished, the end of the rod 34 A dog 341 installed at the top stops the operation of the hydraulic cylinder by operating the limit switch installed at the upper portion of the main support 3 '.

The stopper part 4 is to set the workpiece in the machining position when the workpiece is introduced by the feed roller unit 1, as shown in Figure 6 the support frame is installed between the feed roller and the feed roller unit ( 41, a first hydraulic cylinder 42, one side of which is rotatably installed on the support frame 41, and a clamp portion 43 connected to the hydraulic cylinder 42 and the support frame 41, respectively, rotatably. Consists of

The clamp part 43 is a clamp operated by a main body 431 connected to the first hydraulic cylinder 42 and the support frame 41, and a second hydraulic cylinder 432 installed on the main body 431. 433 and a support block 434 installed on one side of the main body 431 and operated by oil pressure to support one side of the workpiece.

The support block 434 is a block 435 is installed in the main body 431 of the clamp portion, as shown in Figure 7, the block 435 is installed in one side, the tapered, the sliding agent in the block by the oil pressure A first rod 436 and a second rod 437 installed in the block 435 and tapered on one side and sliding in a 90 ° direction with the first rod 436 by the first rod 436. have. That is, the tapered surface of the first rod 436 and the tapered surface of the second rod 437 are in contact with each other, and when the first rod 436 is slid in the block 435 by oil pressure, The tapered surface of the second rod 437 moves along the tapered surface of the first rod 436 that is slid to slide the second rod 437 in the 90 ° direction to the direction of the first rod 436.

As shown in FIG. 8, the spindle unit 5 includes a first rotating shaft 51 which receives the driving force of the driving motor 54 by the pulleys 55, 511 and the pulley belt 56, and the first rotating shaft. One side is engaged with the 51 and the second rotation shaft 52 receives the driving force of the drive motor 54, and one side of the second rotation shaft 52 is engaged with the drive force of the drive motor 54 tool 57 It is comprised by the 3rd rotating shaft 53 which transmits to.

The first rotation shaft 51 is provided with a pulley 511 that receives the driving force of the drive motor 54 by the belt 56 at the lower end, and the first b gear 512 is installed at the upper end.

The second rotating shaft 52 is provided with a second gear 521 engaged with the first gear 512 at the lower end, the second gear 522 is installed at the upper end.

The third rotating shaft 53 is provided with a third gear 531 engaged with the second gear 522 at the lower end thereof, and a tool 57 for processing an iron plate at the upper end thereof.

The first rotating shaft 51, the second rotating shaft 52, and the third rotating shaft 53 are installed in the spindle case 58, and are supported by a bearing 59 so as to be rotatable.

The moving unit 6 operates the spindle unit 5 in three axes (X, Y, Z axes), and the X axis along the bed 6 'as shown in FIGS. 9, 10, and 11. X-axis moving part 61 for moving the spindle unit 5 in the direction, Y-axis moving part 62 for moving the spindle unit 5 in the Y-axis direction, and the spindle unit 5 for the Z axis. That is, it is comprised by the Z-axis moving part 63 which moves up / down.

The X-axis moving unit 61 is a first worm gear 611 that receives the driving force of the first transfer motor 619 by the pulleys (61a, 61b) and the pulley belt (61c), and the first worm gear ( 611 and the first pinion 613 moving along the rack 61 'installed on the bed 6' and connected by the first shaft 612, and the driving force of the first worm gear 611 A second worm gear 615 that is transmitted by the 614 and rotates in the same direction as the first worm gear 611 is connected by the second worm gear 615 and the second shaft 616 to FIG. 4. As shown in FIG. 2, the second pinion 617 moves in the same direction as the first pinion 613 along the rack 61 'installed at one side of the bed 6', and the first and second pinions 613 and 617. It is composed of an X-axis table 618 moved along the bed 6 'by. That is, the first pinion 613 and the second pinion 617 receive the driving force of the first transfer motor 619 by the first and second worm gears 611 and 615, respectively, to one side of the bed 6 ′. The X-axis table 618 is moved in the X-axis direction by moving along the installed rack 61 '. At this time, the connecting gear 614 is engaged and installed between the first worm gear 611 and the second worm gear 615 in order to transfer the operating force of the first worm gear 611 to the second worm gear 615. Hydraulic cylinders 614 'are provided on both sides to closely connect the gears 614 to the first and second worm gears 611 and 615 in order to remove backlash generated between the gears. A bearing 618 'is installed at a lower portion of the X-axis table 618 sliding along the bed 6' so that the X-axis table is operated when the pinions 613 and 617 are operated by the first transfer motor 619. 618 is adapted to slide easily.

The Y-axis moving part 62 is provided with pulleys 627, 628 and pulleys 629 for driving force of the second transfer motor 621 and the second transfer motor 621 installed on one side of the X-axis table. A horizontal ball screw 622 rotated by the horizontal ball screw 622, a horizontal slide 623 sliding horizontally along the horizontal ball screw 622, and both ends of the horizontal ball screw 622 and the second transfer motor 621. It is composed of a horizontal support 624 and bearing 625 to support, and a moving table 626, the lower portion of which is fastened to the horizontal slide 623, the second conveyance during operation of the second conveying motor 621 The horizontal ball screw 622 is transmitted and rotated by the pulleys 627 and 628 and the pulley belt 629 to rotate and operate the driving force of the motor 621, and the horizontal slide 623 by the rotation of the horizontal ball screw 622. ) Slides along the horizontal ball screw 622 to move the movable table 626 in the Y-axis direction.

At this time, the bearing 626 'is installed at the lower part of the movable table 626 which is moved along the horizontal ball screw 622 by the horizontal slide 623, and the guide 618 "is installed on the upper part of the X-axis table 618. When sliding along), the movable table 626 is configured to slide easily.

The Z-axis moving unit 63 includes a third transfer motor 631 installed on one side of the moving table of the Y-axis moving unit 62, pulleys 63a and 63b and a pulley belt of the third transfer motor 631. A vertical ball screw 632 connected by a 63c, a vertical slide 633 vertically sliding along the vertical ball screw 632, both ends of the vertical ball screw 632, and a third transfer motor 631. ) And a vertical support cylinder 634 and a bearing 635 supporting one side of the movable table 626, and a vertical hydraulic cylinder installed on one side of the movable table 626 so as to be located at one side of the third transfer motor 631. 636, a joint 637 installed in the vertical hydraulic cylinder 636, and a Z-axis table 638 connected to and installed with the joint 637, the vertical slide 633, and the spindle unit 5; Consists of.

The Z-axis moving unit 63 is a vertical ball screw 632 by the pulleys (63a, 63b) and the pulley belt (63c) to drive the driving force of the third transfer motor (631) during operation of the third transfer motor (631). Is rotated, and the vertical slide 633 connected to the spindle unit 5 by the vertical ball screw 632 vertically slides along the vertical ball screw 632 to the Z-axis table connected to the spindle unit 5 ( Move 638 in the Z-axis direction (vertical). At this time, the joint 637 connected to and installed in the vertical hydraulic cylinder 636 is also moved in the Z-axis direction by the Z-axis table 638. The vertical hydraulic cylinder 636 is always supplied with a constant pressure corresponding to the weight of the Z-axis moving part 63 to load the load of the third transfer motor 631 and the vertical ball screw 632 when operating in the Z-axis direction. It serves to relieve you.

That is, the spindle unit 5 connected to and installed on the Z-axis table 638 is simultaneously supported by the joint 637 connected to the vertical hydraulic cylinder 636 and the vertical slide 633 connected to the vertical ball screw 632. It is vertically moved by the third transfer motor 631.

The first and second touch roll units 7 and 7 'prevent vibrations during processing of the workpiece and track the correct machining position. As shown in FIG. 12, the first touch roll unit 7 includes the first frame. A first touch roller 72 rotatably installed at the 71, a first hydraulic cylinder 73 for operating the first frame 71, and a first guide part for guiding the first frame 71; And a first case 75 provided with the first hydraulic cylinder 73 and the first guide portion 74, and the second touch roll unit 7 'includes a second frame 71'. A second touch roller 72 'installed to be rotatable, a first and second tracking sensors 76' and 77 'installed on the second frame 71' to track a machining position, and the second touch roller 72 '. Guides the second hydraulic cylinder 73 'for operating the frame 71', the liner scale 78 'for measuring the movement of the second frame 71', and the second frame 71 '. The second guide portion 74 ', the limit switch 79' for controlling the operating range of the first and second hydraulic cylinders 73 and 73 ', the second hydraulic cylinder 73' and the second It consists of the 2nd case 75 'provided with the guide 74', the liner scale 78 ', and the limit switch 79'.

The second touch roll unit 7 ′ is placed on the Z-axis table 638 so that the second touch roll unit 7 ′ is positioned in the operating direction of the spindle unit 5, that is, the travel direction of the tool 57 during processing. The first touch roll unit 7 is installed on one side of the Z-axis table 638 so as to be symmetrical with the second touch roll unit 7 'around the tool 57 installed in the spindle unit 5. In this case, the first and second touch roll units 7 and 7 'are installed on the spindle unit 5 by respective connecting rods 7a and 7b connected to and installed with the first and second cases 75 and 75'. It is provided on one side of the Z-axis table 638 so as to have the same height as the 57.

13 is a diagram illustrating a tool according to the present invention, in which a plurality of tips 572 are screw-coupled to a body 571, and are driven by a drive motor 54 of the spindle unit 5. Machine the outer surface of the welded pipe. That is, the tool 57 is rotated by the driving force of the drive motor 54, and is moved in the X axis direction along the bed 6 'by the X axis moving part 61 of the moving unit 6 in the X axis direction. The part 62 slides in the Y-axis direction by the Z-axis moving part 63 in the Z-axis direction, and seams are processed.

As such, chips generated during shim machining by the spindle unit 5 are located below the feed roller 1 and the bed 6 ', that is, below the pipe to be shim processed by the spindle unit 5. It is conveyed to the chip box 81 by the conveyor part 8.

FIG. 14 shows an exemplary view of a tool changer. The tool changer 9 is a rail bracket 91 installed in parallel with the transfer roller 1 on one side of the initial transfer roller 1 into which a pipe enters. ), A guide 92 installed on the rail bracket 91, a rodless cylinder 93 installed on the rail bracket 91 and operated by air, and guided by the rodless cylinder 93. The post portion 94 moved along the 92 and the pellet 95 mounted on the post portion 94 and mounted with a replacement tool and a used tool are used to change a tool or a workpiece at the end of life. Replace the tool accordingly.

That is, the pellet 95 having the exchange tool mounted on one side is moved in the direction of the spindle unit 5 along the guide 92 by the rodless cylinder 93 and the post portion 94 which are operated by air. When placed at the bottom of the tool mounted on 5), the manually mounted tool is removed from the spindle unit 5, the separated tool is mounted on the other side of the pellet 95, and then mounted on one side for replacement. Mount the tool on the spindle unit (5). At this time, the shaft of the tool and the spindle unit 5 is fixed with a key and a key groove (not shown). In order to fit the groove, the tool must be rotated to some extent, so that three cam followers 951 are assembled to the pellet 95 respectively. The tool rotates smoothly. Further, a limit switch 911 and a dog 912 are attached to both ends of the rail bracket 91 and the lower portion of the post portion 94, respectively. END STROKE).

According to the present invention configured as described above, the feed roller unit 1, the up rolling unit 2, and the clamping unit are symmetrically disposed on both sides of the main support 3 'around the main support 3' on which the clamping unit 3 is installed. (3), stopper portion (4), moving unit (6), spindle unit (5), touch roll unit (7, 7 '), chip conveyor (8), tool changer (9), etc. Can be.

When the core processing is to be carried out using the present invention configured as described above, when the pipe passing through the inner welding line reaches the conveying roller part 1, each of the conveying roller part driving motors 12 is operated to the roller 11. The pipe 700 is transferred by rotating. At this time, the front end of the pipe 700 is conveyed without colliding with the roller 11 by the inclined guide portion 14 installed on the support 13 to be located on one side of the roller (11). That is, the inclined guide portion 14 prevents the front end sag of the pipe 700 to be conveyed to prevent a collision with the roller 11.

When the pipe 700 is conveyed by the conveying roller part 1 as described above, the hydraulic motors 211 and 221 of the up-rolling unit 2 installed between the conveying roller part 1 operate to operate the ball screws 213 and 223. ) And the sliding parts 214 and 224 are operated in the direction of the pipe 700 by the ball screws 213 and 223 so that the idle rollers 215 and the turning rollers are installed on the sliding parts 214 and 224. 225 is in contact with the surface of the pipe 700. At this time, the idle roller 215 and the turning roller 225 is stopped by the operation of a pressure switch (not shown). That is, the set pressure is set low, the operation is stopped at the same time as the pipe contact.

When the idle roller 215 and the turning roller 225 contact the surface of the pipe 700, the moving frames 216 and 226 provided with the idle roller 215 and the turning roller 225 by the hydraulic cylinders 217 and 227. ) To raise the pipe 700 by raising and operating about 50 mm in the Z-axis direction, and then rotating the pipe 700 by operating the turning roller 225 by the electric motor 221 '. In this case, the pipe 700 that is rotated by the turning roller 225 is detected by the first tracking sensor 76 'of the second touch roll unit 7', and thus, the pipe processing groove (the part to be drilled) is detected. The rotation of is controlled. That is, when the pipe 700 is raised in the Z-axis direction by the up rolling unit 2, the work piece in a state where the ends of the tool 57 and the first and second touch roll units 7 and 7 'are aligned. The moving table 626 is advanced by the Y-axis and Z-axis moving parts 62 and 63 to a position 80 mm away from the pipe, and the pipe is processed by the first tracking sensor 76 'of the second touch roll unit 7'. The workpiece is rotated by the turning roller portion 22 of the up rolling unit 2 until the groove is detected.

When the workpiece is rotated to the machining position, the idle roller 215 and the turning roller 225 are 50 mm down, and the clamping unit 3 installed at the upper end of the main support 3 'is operated to clamp the pipe 700. Next, the stopper part 4 installed between the conveying roller part 1 and the conveying roller part 1 is operated to clamp and support the front end of the pipe 700. That is, when the pipe 700 is clamped by the clamping unit 3, the stopper portion 4 is operated by the first hydraulic cylinder 42, and the first rod 436 is operated by the oil pressure. The second rod 437 is operated in the direction of the front end of the pipe 700 to support the workpiece, and the clamp 433 is operated by the second hydraulic cylinder 432 to clamp the front end of the pipe 700.

When the workpiece is clamped and supported at the machining position by the clamping unit 3 and the stopper portion 4 as described above, the tool 57 is rotated by the drive motor 54 of the spindle unit 5, and the moving unit ( The spindle unit 5 is moved in the X-axis direction by the X-axis moving part 61 of 6) to perform seam processing.

At this time, since the processing groove of the workpiece is required to correct and track the deviation value of the Y-axis and Z-axis direction generated by the internal welding, the touch roll unit using the first and second hydraulic cylinders 73 and 73 '. The first and second touch rollers 72 and 72 'of (7, 7') are brought into contact with the workpiece surface at a constant pressure, and are moved forward / reverse in the Y axis direction while being moved in the processing direction by the X-axis moving part 61. Let's do it. As described above, when the first and second touch rollers 72 and 72 'are slid in the X-axis and Y-axis directions along the surface of the workpiece, the liner scale of the second touch roll unit 7' 78 ') to adjust the machining depth. In addition, the machining deviation in the Z-axis direction is sensed by the second tracking sensor 77 'installed in the second frame 71' of the second touch roll unit 7 'to adjust the processing depth.

That is, the pipe 700 conveyed by the feed roller part 1 is rotated and centered to the machining position by the up rolling unit 2 and the first tracking sensor 76 ', and the clamping unit 3 and the stopper part Clamping and support by (4), the first and second touch rollers 72 and 72 'of the first and second touch roll units 7 and 7', the second tracking sensor 77 'and the moving unit 6 The cutting position is grasped by), and the core is moved by the spindle unit (5).

Chips generated during deep processing of the pipe are transferred to the chip box 81 installed outside by the chip conveyor unit 8, and when the tool is to be replaced according to the change of the tool or the workpiece at the end of its life, the tool changer ( Replace the tool using 9).

As described above, the present invention clamps the workpiece by a plurality of clamping units and stoppers in the seam processing of the pipe, thereby eliminating noise and vibration of the workpiece generated during machining, improving processing quality, and extending the life of the tip. .

In addition, the up-rolling unit, the clamping unit, and the stripper are used to center / set the workpiece to the machining position, so that the workpiece can be centered / set regardless of the pipe type, and a sensor for tracking the groove is attached. Unmanned operation is possible at the time of seam processing, and this has many effects such as improved work efficiency and productivity.

Claims (17)

In the manufacture of the pipe, seam milling apparatus for seam processing the outer weld by importing the inner welded pipe after bending; The shim milling apparatus includes: a plurality of feed roller parts for carrying in a workpiece; An up-rolling unit installed between the feed rollers to rotate and center the workpiece to the machining position; A plurality of clamping units installed at upper ends of the main support installed at one side of the transfer roller part to clamp the centered workpiece; A stopper part installed between the feed roller part and the feed roller part to clamp and support the front end of the centered workpiece; A moving unit sliding along a bed installed on another side of the transport roller part so as to be symmetrical with the main support around the transport roller part; A spindle unit moving by the mobile unit and processing a workpiece; First and second touch roll units installed on one side of the moving unit so as to be located at both sides of the spindle unit, respectively, to grasp the processing position of the workpiece; A chip conveyor unit installed to be positioned below the transfer roller unit and the bed to transfer chips generated by the processing of the workpiece to the chip box; And a tool changer installed between the feed roller part and the feed roller part in parallel with the roller part to exchange a tool of the spindle unit. The method of claim 1; The feed roller portion is inclined to facilitate the transport of the pipe is provided on the roller in contact with the incoming pipe, the motor for driving the roller, the support on which the roller and the motor is installed, and the support to be located on one side of the roller Pipe shim milling apparatus comprising a guide portion. The method of claim 1; The up-rolling unit comprises an idle roller portion for raising the workpiece in contact with the loaded pipe, and a turning roller portion for centering the machining position by rotating the workpiece while lifting the pipe in contact with the loaded pipe. Pipe shim milling device. The method of claim 3; The idle roller part is a hydraulic motor installed under the moving frame, a ball screw to receive the driving force of the hydraulic motor by the first gear, and a sliding force to receive the driving force of the hydraulic motor by the ball screw to slide along the ball screw A pipe, an idle roller installed to be rotatable on the sliding part, a hydraulic cylinder for operating the moving frame up and down, and a fixed frame to which the hydraulic cylinder is installed at a constant interval. Shim milling device. The method of claim 3; The turning roller part is a hydraulic motor installed under the moving frame, a ball screw to receive the driving force of the hydraulic motor by the first gear, and a sliding drive to receive the driving force of the hydraulic motor by the ball screw sliding along the ball screw And an electric motor installed on one side of the moving frame provided with the hydraulic motor, a worm gear for transmitting a driving force of the electric motor to the rotating shaft, a turning roller installed on the sliding part to be rotatable by the rotating shaft, And a hydraulic cylinder for operating a moving frame up and down, and a fixed frame in which the hydraulic cylinder is installed at a constant interval. The method of claim 1; The clamping unit is fastened to the upper end of the main support, the fastener is installed, the hydraulic cylinder is installed in the fastener, the clamping jaw which is vertically operated by the hydraulic cylinder in contact with the upper pipe, and is connected to the hydraulic cylinder Pipe shim milling device, characterized in that consisting of a rod for guiding the clamping jaw. The method of claim 1; The stopper part includes a support frame installed between the transport roller part and the transport roller part, a first hydraulic cylinder installed at one side of the support frame to be rotatable, and a clamp part connected to the hydraulic cylinder and the support frame to be rotatable, respectively. Pipe shim milling apparatus characterized in that. The method of claim 7; The clamp unit is connected to the first hydraulic cylinder and the support frame, a clamp operated by the second hydraulic cylinder installed on the upper body, and installed on one side of the main body is operated by oil pressure to support one side of the workpiece Pipe shim milling apparatus, characterized in that consisting of support blocks. The method of claim 8; The support block includes a block installed in the main body of the clamp unit, a first rod installed in the block, one side of which is tapered, and slid in the block by oil pressure, and installed in the block, one side of which is tapered, 1. A pipe shim milling apparatus comprising a second rod sliding in a direction of a front end of a pipe carried by a rod and supporting a pipe front end. The method of claim 1; The moving unit includes an X-axis moving unit for moving the spindle unit in the X-axis direction along the bed; A Y-axis moving unit connected to the X-axis moving unit and sliding along a guide installed on the X-axis to move the spindle unit in the Y-axis direction; A pipe shim milling device connected to the Y-axis moving part and configured to move a spindle unit in a Z-axis (up / down) direction. The method of claim 10; The X-axis moving unit and the first worm gear that receives the driving force of the first transfer motor by the pulley and the pulley belt, A first pinion connected to the first worm gear by a first shaft and moving along a rack installed on a bed; A second worm gear that receives the driving force of the first worm gear by a connecting gear and rotates in the same direction as the first worm gear; A second pinion connected to the second worm gear by a second shaft and moving in the same direction as the first pinion along the rack installed on one side of the bed; Pipe shim milling device, characterized in that consisting of the X-axis table is moved along the bed by the first and second pinions. The method of claim 10; The Y-axis moving unit and the second transfer motor is installed on one side of the X-axis table, A horizontal ball screw rotated by receiving the driving force of the second transfer motor by a pulley and a pulley belt; A horizontal slide which is horizontally slid along the horizontal ball screw; Horizontal supports and bearings for supporting both ends of the horizontal ball screw and the second transfer motor; Pipe shim milling device, characterized in that consisting of a movement that the lower portion is fastened to the horizontal slide. The method of claim 10; The Z-axis moving unit and the third transfer motor is installed on one side of the moving table of the Y-axis moving unit, A vertical ball screw connected by the pulley and the pulley belt of the third transfer motor; A vertical slide which is vertically slid along the vertical ball screw and connected to and installed with the spindle unit; Vertical supports and bearings for supporting both ends of the vertical ball screw and the third transfer motor on one side of the moving table, A vertical hydraulic cylinder installed at one side of the moving table to be located at one side of the third transfer motor; A joint installed in the vertical hydraulic cylinder; A pipe shim milling apparatus comprising: a Z-axis table connected to and installed with the joint, the vertical slide, and the spindle unit. The method of claim 1; The spindle unit includes a first rotating shaft that receives the driving force of the drive motor by the pulley and the pulley belt, A second rotation shaft on which one side is engaged with the first rotation shaft to receive the driving force of the driving motor; A third rotation shaft engaged with one side of the second rotation shaft to transmit a driving force of the driving motor to the tool; The first, second and third rotary shafts are supported by a bearing, and one side of the pipe shim milling apparatus comprising a spindle case connected to the Z axis table and the vertical hydraulic cylinder of the mobile unit by a joint and a vertical slide. The method of claim 1; The first touch roll unit includes a first touch roller rotatably installed on a first frame, a first hydraulic cylinder for operating the first frame, a first guide part for guiding the first frame, and the first first roller. A pipe shim milling apparatus comprising: a first cylinder having a hydraulic cylinder and a guide part installed. The method of claim 1; The second touch roll unit may include a second touch roller rotatably installed on a second frame, first and second tracking sensors installed on the second frame to track a machining position, and a second to operate the second frame. A hydraulic cylinder, a liner scale for measuring the degree of movement of the second frame, a second guide portion for guiding the second frame, a limit switch for controlling an operating range of the first and second hydraulic cylinders, and the first 2. A pipe shim milling apparatus comprising a second cylinder with a hydraulic cylinder, a second guide, a liner scale, and a limit switch. The method of claim 1; The tool changer includes a rail bracket installed at one side of the feed roller part into which the pipe enters, parallel to the feed roller part, a guide installed on the rail bracket, and a rodless cylinder installed at the rail bracket to be operated by air. And a post part moved along the guide by the rodless cylinder, and a pellet mounted on the post part and mounted with a replacement tool and a used tool.