JP3863982B2 - Pipe centering positioning method and pipe processing apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe centering positioning method and a pipe processing apparatus.
[0002]
[Prior art]
Conventionally, the apparatus shown in FIG. 8 is generally employed as a pipe core pushing apparatus used when processing a pipe with, for example, a laser cutting machine as a thermal cutting machine.
[0003]
That is, the rear end of the pipe W is clamped by the index device 101 and is provided so as to be rotatable. A core pushing device 103 for extracting the center of the clamped pipe W is provided relative to the index device 101. Further, a processing head 105 provided in a laser processing machine (not shown) for performing a thermal cutting process on the pipe W is provided on the front side (left side in FIG. 8) of the index device 101.
[0004]
[Problems to be solved by the invention]
By the way, in the above-described core pushing device 103, the end face of the pipe W cannot be aligned with the machine origin of the laser processing machine, and dust during cutting cannot be collected. In addition, there is a problem that spatter and the like attached to the inner diameter of the pipe W during laser processing cannot be removed, and the core pushing device 103 cannot be moved to an arbitrary position.
[0005]
The object of the present invention is to make it possible to match the pipe end surface to the machine origin, prevent dust from being collected and adhering to the inner periphery of the pipe, and enabling the pipe centering positioning device to be moved to an arbitrary position. An object of the present invention is to provide a centering positioning method and a pipe machining apparatus.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a pipe centering positioning method according to the present invention according to claim 1 is characterized in that one end of a pipe is chucked by a rotatable chuck provided in an index device which is movable in the front-rear direction, and the index device After the pipe centering positioning device provided opposite to each other is moved to the index device side on the rail extending in the front-rear direction, the other end of the pipe is centered and positioned, and then the thermal cutting head is moved in the front-rear direction. Use a pipe centering positioning method that heat-cuts the pipe,
(A) In order to make the mechanical origin of the thermal cutting head coincide with the other end of the pipe, the origin adjustment rod provided in the pipe centering positioning device is positioned and installed in the origination hole formed on the rail. A machine origin setting step of positioning the origin abutting block provided in the pipe centering positioning device at the machine origin.
[0007]
(B) A pipe positioning process in which the index device is moved to the machine origin side after the machine origin finding process is completed and the other end of the pipe is pressed against the end face of the origin abutting block.
[0008]
(C) After completion of the pipe positioning step, the origin abutting block is retracted from the pipe, the core pushing block provided in the pipe centering positioning device is projected and pressed against the other end surface of the pipe, and the pipe is centered. Pipe centering process.
It is characterized by comprising.
[0009]
According to a second aspect of the present invention, there is provided a pipe machining apparatus according to the present invention, wherein one end of a pipe is chucked by a rotatable chuck provided in an index apparatus that is movable in the front-rear direction, and the pipe provided opposite to the index apparatus. A pipe for centering and positioning the other end of the pipe by moving the centering positioning device to the index device side on the rail extending in the front-rear direction, and then moving the thermal cutting head in the front-rear direction to thermally cut the pipe into the pipe As a processing device, the pipe centering positioning device is mounted on the rail so as to be movable in the front-rear direction, a frame provided on the upper surface of one side of the frame so as to be movable up and down, and an origin An origin-finding hole formed on the rail to be fitted with a delivery bar, and an origin abutment that is provided in the frame and abuts the other end of the pipe And it is characterized in that it is a pipe centering locator body with a block pushing block and movable core the longitudinal direction in contact with the other end of the pipe, in configuration.
[0010]
By using the pipe centering positioning method and pipe processing device of the present invention according to claims 1 and 2 described above, the home centering rod provided in the pipe centering positioning device is inserted into the centering hole formed on the rail. Thus, the end face of the origin abutting block provided in the pipe centering positioning device coincides with the machine origin. Then, the index device that chucks the pipe is moved to the end face of the origin abutting block to press the tip of the pipe. Further, the origin abutting block is retracted from the pipe, and the pipe is centered by pressing the end surface of the pipe with a center pushing block provided in the pipe centering positioning device.
[0011]
Thus, the pipe end face can be aligned with the machine origin, the centering and positioning can be performed accurately, and the pipe centering positioning device can be moved arbitrarily.
[0012]
A pipe machining apparatus according to a third aspect of the present invention is the pipe machining apparatus according to the second aspect, wherein a sputter removing core rod can be inserted into and removed from the core pressing block and a hollow shaft supporting the core pressing block. It is characterized by providing a through hole for this purpose.
[0013]
Therefore, since the sputter removing core rod is inserted into the pipe processing portion through the through hole provided in the hollow shaft and the core pressing block and laser processing is performed, it is possible to prevent spatter from adhering to the inside of the pipe.
[0014]
According to a fourth aspect of the present invention, there is provided the pipe processing apparatus according to the second aspect, wherein the dust suction hole communicating with the through hole is provided in the hollow frame and the dust is discharged to one side of the frame. A discharge port is provided.
[0015]
Therefore, since the through hole and the dust suction hole provided in the hollow frame communicate with each other, the dust generated during the thermal cutting process passes through the through hole and the dust suction hole, and the discharge port provided in the frame from the hollow part of the frame. To be collected outside the machine.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0017]
First, the overall arrangement of devices will be schematically described. Since the employed laser beam machine and indexing device have a known configuration, detailed illustration and description are omitted.
[0018]
Referring to FIG. 7, a frame 3 constituting, for example, a laser beam machine 1 as a thermal cutting machine rides on rails 5A and 5B laid on both sides by a driving member (not shown) in the front-rear direction (left and right in FIG. 7). Direction). A thermal cutting head 7 is provided on the front side of the frame 3.
[0019]
On the rear side (right side in FIG. 7) of the laser beam machine 1, there is provided an index device 9 that clamps the pipe W and is rotatable. More specifically, the index device 9 includes a chuck 11 that rotates by clamping the pipe W, and the index device 9 is provided on the frame 13 straddling the rails 5A and 5B, and on the rails 5A and 5B. Can be moved in the front-rear direction by a drive member (not shown).
[0020]
A pipe centering positioning device 15 is provided on the front side of the laser beam machine 1. More specifically, the pipe centering positioning device 15 is provided on the frame 17, and base plates 19A and 19B are integrally provided on both sides of the frame 17, and the base plate 19A is provided on the rail 5B. A base plate 19B is placed on the frame 17, and the frame 17 is movable in the front-rear direction by a drive member (not shown). The pipe centering / positioning device 15 includes a center pushing block 21 that is movable back and forth, and an origin that is movable in the left-right direction (vertical direction in FIG. 7) provided on the side surface of the frame 17 on the laser processing machine 1 side. A pipe centering positioning body 24 is constituted by the abutting block 23.
[0021]
Further, an origin bar 25 is provided on the base plate 19B provided on the frame 17 so as to be movable up and down, and an origin hole 27 into which the origin bar 25 is inserted is formed on the rail 5B.
[0022]
With the above configuration, the frame 17 having the pipe centering positioning main body 24 is moved on the rails 5A and 5B, and is stopped at the point where the origination rod 25 is aligned with the origination hole 27 formed on the rail 5B (see FIG. 7 is a position indicated by a two-dot chain line).
[0023]
When the origin bar 25 is inserted into the origin hole 27 and the frame 17 is positioned, the end face of the origin abutment block 23 provided on the frame 17 coincides with the machine origin KK line. In this state, the index device 9 is moved and the chucked end face of the pipe W is pressed against the end face of the origin abutting block 23 to position the pipe W. Thereafter, the origin abutting block 23 is retracted away from the pipe W, and the core pushing block 21 is advanced and pressed against the pipe W. Thus, the centering and origin setting of the pipe W are completed.
[0024]
Next, the configuration of the pipe centering positioning device 15 which is the main part of the present invention will be described in more detail.
[0025]
Referring to FIGS. 1 and 2, base plates 19A and 19B provided on a frame 17 are placed on rails 5A and 5B, and rails 5A and 5B are provided by a plurality of cam followers 29 provided on the respective base plates 19A and 19B. It will be movable on the top. Further, as shown in FIG. 5 in detail, the base plate 5B has a plurality of cam followers 31 as reference side rollers on the inner side (left side in FIG. 5) of the rail 5B and an eccentric side on the driven side. A plurality of eccentric cam followers 33 are provided as rollers.
[0026]
In addition, the origin bar 25 is erected on the base plate 19B so as to be movable up and down by a guide member 35. Further, a clamp member 37 is provided to fix the position of the frame 17, the clamp member 37 abuts on and separates from the lower surface of the rail 5 </ b> B, and a screw portion 41 that tightens the clamp body 39. It is comprised with the handle | steering-wheel 43 provided with.
[0027]
With the above configuration, the frame 17 can smoothly move on the rails 5A and 5B via the plurality of cam followers 29, 31, and 33, and also guides the side of the rail 5B to the cam follower 31 with the eccentric cam follower 33. Even during movement, accuracy such as perpendicularity with the pipe W does not shift. In addition, the machine origin and the pipe end surface can be made to coincide with each other by the origin stick 25 and the frame 17 can be positioned at an arbitrary position by the clamp member 37.
[0028]
The frame 17 is provided with an origin abutting block assembly 45 having the origin abutting block 23 and a center pushing block assembly 47 having the core pushing block 21 as the pipe centering positioning body 24. ing.
[0029]
The origin abutting block assembly 45 is provided on the side surface of the frame 17 on the laser processing machine 1 side (upper side in FIG. 1), and the origin abutting block 23 is guided by a guide member 49 in the left-right direction (in FIG. 1). The movement is performed by operating the handle 51 provided on the origin abutting block 23. Then, the end face 23A of the origin abutting block 23 comes into contact with the tip of the pipe W and the origin is determined.
[0030]
As shown in FIG. 3, the core pushing block assembly 47 includes a hollow portion 53 having a hollow shape formed on the frame 17, and a fastening member extending in a direction perpendicular to the support member 55 on the frame 17. Are integrally provided. A hole 57 is formed in the center of the support member 55, and a screw part 59 such as a trapezoidal screw is formed on one side of the hole 57. A hollow shaft 63 having a through hole 61 in the screw part 59 is formed. It is screwed.
[0031]
Further, a handle 71 provided integrally with a boss portion 69 in which a through hole 67 provided with a screw portion 65 is formed at the rear end of the hollow shaft 63 (lower side in FIG. 1, left side in FIG. 3), A nut member 73 is screwed to the threaded portion 65 and is coupled to the hollow shaft 63. Further, a bearing case 77 is rotatably provided at the front end (upper side in FIG. 1, right side in FIG. 3) of the hollow shaft 63 via a bearing 75, and the core pushing block 21 is fastened to the bearing case 77 by a fastening member. Are integrally provided, and a through hole 79 is formed at the center of the core pushing block 21. Reference numeral 81 denotes a locking bolt.
[0032]
Furthermore, the bearing case 77 is provided with a labyrinth structure for preventing dust from entering the bearing 75. More specifically, as shown in FIG. 4, seal plates 85A and 85B having a plurality of grooves 83A and 83B on the inner periphery are provided on both sides of the bearing case 77 to prevent dust from entering. .
[0033]
With the above configuration, when the handle 71 is rotated, the hollow shaft 61 moves forward and backward, so that the core pushing block 21 provided integrally with the hollow shaft 61 moves forward and backward to center the pipe W.
[0034]
Further, as shown in FIG. 6, the nut member 73 screwed to the boss portion 69 of the handle 71 is removed, and the core rod 87 is inserted into the laser processing position through the through holes 61, 67, 79 to perform laser processing. By doing so, the spatter adhering to the inside of the pipe W can be prevented.
[0035]
Referring again to FIGS. 1 to 3, a cavity 89 is formed in the support member 55, and a plurality of communication holes 91 are provided to communicate the cavity 89 with the through hole 61 of the hollow shaft 63. The hollow shaft 63 is provided. In addition, a dust suction hole 93 communicating with the hollow portion 89 and the hollow portion 53 of the frame 13 is provided, and a discharge port 95 is formed on one side of the frame 13. Communicate with the device.
[0036]
With the above configuration, dust generated inside the pipe W during the laser processing by the operation of the dust collector passes through the through hole 79 formed in the core pushing block 21 and communicates with the communication hole 91 and the hollow portion from the through hole 61 provided in the hollow shaft 63. 89. The dust is collected through the dust suction hole 93 and the hollow portion 53 of the frame 17 through the discharge port 95.
[0037]
The present invention is not limited to the embodiment of the invention described above, and can be implemented in other modes by making appropriate modifications.
[0038]
【The invention's effect】
As can be understood from the description of the embodiment as described above, according to the first and second aspects of the present invention, the origin-finding rod provided in the pipe centering positioning device is inserted into the origin-finding hole formed on the rail. By doing so, the end face of the origin abutting block provided in the pipe centering positioning device coincides with the machine origin. Then, the index device that chucks the pipe is moved to the end face of the origin abutting block to press the tip of the pipe. Further, the origin abutting block is retracted from the pipe, and the pipe is centered by pressing the end surface of the pipe with a center pushing block provided in the pipe centering positioning device.
[0039]
Thus, the pipe end face can be aligned with the machine origin, the centering and positioning can be performed accurately, and the pipe centering positioning device can be moved arbitrarily.
[0040]
According to the third aspect of the present invention, since the sputter removing core rod is inserted into the pipe processing section through the through hole provided in the hollow shaft and the core pressing block, the laser processing is performed, so that the sputter adheres to the inside of the pipe. Can be prevented.
[0041]
According to the fourth aspect of the present invention, since the through hole and the dust suction hole provided in the hollow frame communicate with each other, the dust generated during the thermal cutting process passes through the through hole and the dust suction hole and is hollow in the frame. Dust is collected outside the machine from the outlet provided in the frame.
[Brief description of the drawings]
FIG. 1 is a plan view of a workpiece centering positioning apparatus showing a main part of the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is an enlarged cross-sectional view taken along line III-III in FIG.
4 is an enlarged cross-sectional view taken along the line IV in FIG. 3. FIG.
FIG. 5 is an enlarged explanatory view of a V arrow portion in FIG. 1;
FIG. 6 is an operation explanatory diagram.
FIG. 7 is an explanatory plan view showing an arrangement configuration of a laser beam machine, an index device, and a workpiece centering positioning device according to the present invention.
FIG. 8 is a side view illustrating a conventional example and showing an arrangement configuration of a laser processing machine, an index device, and a core pushing device.
[Explanation of symbols]
5A, 5B Rail 7 Thermal cutting head 9 Index device 11 Chuck 15 Pipe centering positioning device 17 Frame 21 Center pushing block 23 Origin abutting block 23A End surface 24 Pipe centering positioning body 25 Origin finding rod 27 Origin finding hole 61, 67, 79 Through hole 63 Hollow shaft 87 Core rod 93 Dust suction hole 95 Discharge port W Pipe

Claims (4)

One end of a pipe is chucked with a rotatable chuck provided in an index device movable in the front-rear direction, and a pipe centering positioning device provided opposite to the index device is placed on the rail extended in the front-rear direction. After moving to the index device side and centering and positioning the other end of the pipe, move the thermal cutting head in the front-rear direction and make a pipe centering positioning method that performs thermal cutting processing on the pipe,
(A) In order to make the mechanical origin of the thermal cutting head coincide with the other end of the pipe, the origin bar provided in the pipe centering positioning device is positioned and installed in the origin hole formed on the rail. A machine origin setting step of positioning at least the origin abutting block provided in the pipe centering positioning device at the machine origin;
(B) A pipe positioning process in which the index device is moved to the machine origin side after the machine origin finding process is completed and the other end of the pipe is pressed against the end face of the origin abutting block.
(C) After completion of the pipe positioning step, the origin abutting block is retracted from the pipe, the core pushing block provided in the pipe centering positioning device is projected and pressed against the other end surface of the pipe, and the pipe is centered. Pipe centering process.
And a pipe centering and positioning method. One end of a pipe is chucked with a rotatable chuck provided in an index device movable in the front-rear direction, and a pipe centering positioning device provided opposite to the index device is placed on the rail extended in the front-rear direction. After moving to the index device side and centering and positioning the other end of the pipe, a pipe cutting device for moving the thermal cutting head in the front-rear direction to thermally cut the pipe, and the pipe centering positioning device, A frame that is horizontally mounted on the rail so as to be movable in the front-rear direction, an originator bar that can be moved up and down on the upper surface of one side of the frame, and an origin formed on the rail so that the originator bar can be mounted An outlet hole, an origin abutting block that is provided in the frame and abuts the other end of the pipe, and a front-rear direction that abuts the other end of the pipe It is rotatably wick press the pipe centering locator body with a block, which in configured Pipe processing apparatus according to claim. 3. Pipe processing according to claim 2, wherein a through-hole is provided in the core pushing block and a hollow shaft for supporting the core pushing block so that a sputter removing core rod can be inserted and removed. apparatus. The pipe machining apparatus according to claim 2, wherein a dust suction hole communicating with the through hole is provided in the hollow frame, and a discharge port for discharging dust is provided on one side of the frame.

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