JPS59191585A - Working machine for tubular member - Google Patents

Abstract

PURPOSE:To perform easily laser working in the prescribed position on the inside circumferential surface of any long sized tubular member by attaching a working head to a traveling device and moving the traveling device to the prescribed position by the self-traveling in the tubular member. CONSTITUTION:When a traveling device 7 is placed on the inside circumferential surface at the end 2 of a tubular member 1, the device moves by self-traveling and stops in the preset position. The device 7 extends extending legs 9a-9c and holds itself to the hollow in the working position. A laser oscillator 3 projects laser light 6 from the end 2 side to the inside of the member 1. The laser light 6 enters the inside of a working head 5 and its direction is changed by a reflection mirror. The reflected light is focused by a lens system so as to focus on the inside circumferential surface of the member 1. The head 5 is gradually rotated around the axis of the light 6, by which the member 1 is cut.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a laser light beam to illuminate the inner peripheral surface of a tubular member. This relates to a tubular member processing machine that processes tubular members, particularly the one that is most suitable for processing large-diameter tubular members. Conventionally, processing of tubular members, for example, cutting, involves firmly fixing the workpiece on the tubular member. This was done by mechanical cutting, such as saw blade cutting. Therefore, if the tubular member is thin and has a large diameter and cannot be fixed with sufficient strength, a.
! It was a difficult time to go to Fr.

Is this a problem? As a solution to this problem, a 701 tubular member shown in Figure 1 has already been proposed using a laser beam.
Teii. In FIG. 1, (1) is a tubular member that is a workpiece, (2) is a y8 portion of the tubular member (1), and (8) is a laser that is placed near the end (2) and emits a laser beam. an oscillator, (4) a matchmaker in the hollow part of the rt tubular member (1);
A telescopic light guide tube whose one end is attached to the laser oscillator (8) and which guides the laser beam (6); (6) is the light guide tube (4);
The central axis of the tubular member (1) at the other end? The focus of the above-mentioned laser beam (6) is attached to the lightning-shaped member (
1) It is a laser processing head that connects the inner circumference to the river soil.

That is, the illustrated sub-product is a laser beam (6) from a laser oscillator (3) that is transmitted to a predetermined position in the tubular member (1) to be processed by a light tube (4). Processing head (5
) to focus the cutting blade on the inner circumference of the tubular member (1). Don't be like that.

However, the tubular member processing machine with the above configuration is effective for lifting platforms with a short distance from the end (2) to the processing position 1, but the distance is Even with the maximum melting power of (4), there is a drawback that there may be a platform where the head (5) cannot reach the desired processing position. Moreover, in order to eliminate such inconvenience, the light guide tube t4J
However, keeping it in place for a long time led to the size of the equipment, which also had the disadvantage of being uneconomical.

Fukomei is designed with consideration to the construction, and is attached to the processing head traveling device, so that the traveling device can move freely along the tubular part, and the power tool can be moved anywhere. It is an object of the present invention to provide a tubular member processing machine that can process a tubular member without using a light guide tube even in the case of such a case.

In order to achieve such objectives, the present invention provides a pipe-shaped part control and machining system, a traveling device that can move completely within the tubular member and stop at a predetermined position, and a light receiving section that is attached to the traveling device and receives the n1 input laser beam. and a processing section for completely changing the direction of the received laser beam and focusing it on the inner periphery of the tubular member,
A laser processing head that rotates to process the inner circumference of the tubular member 01", and a laser oscillator provided outside the tubular member that injects a laser beam χ along the central axis of the tubular member from the end of the tubular member at fL, -4: It is characterized by the following.

Hereinafter, a seventh embodiment of the present invention will be described, with reference to FIGS. 2 and 6, in which parts that are the same as or have the same effect as those in FIG. 1 are given the same reference numerals.

In the figure, (7) is a traveling device that travels in a circle with a tubular member (1), and includes traveling wheels (8) and extension legs (9) that can be moved in and out.
a) ~ (9C) It has Xun. This extended leg (9a) ~ (
9c) is Fi Fig. 2 (a) j of the traveling device (γ) during traveling.
As shown in ('b), the traveling device (7) is housed in a 7-inch circle, and when the traveling device (7) reaches a predetermined processing position, it is extended 11111 mm in the radial direction and placed on the traveling device (7). Figure 6 (a
) I Make a score to hold it in the tube as shown in (b).

Further, the traveling device (7) has a laser processing head (6) whose detailed structure #1 is shown in FIG. 4 pivoted on the side of the device facing the laser energizer (8). 2 in Figure 4,
(5aQj A head outer frame having a laser intake hole (10a) and a laser exit hole (10'b) 7, μm) is located in the head outer frame (5a) and has a circular shape that changes the direction of the laser beam (6). Reflector, (154 is the head outer frame (5a)
A lens system is disposed inside the head outer frame (5a-shaped reflector ( b) and lens system (121 constitutes the main part of the laser processing head.Furthermore, when the above-mentioned reflection = a, three lenses are provided near the outer periphery so as to be spaced apart from each other on the same circumference. Two small holes (
13a).

(15b) s (13c) k i shi, shikatl
These small holes (13a).

~(Behind the 16 holes is a laser sensor (14a) to detect the laser beam that has passed through the -f:f'L-f:'f hole.
4c) is arranged, these laser sensors (14a) to (
The direction of the laser beam (6) is precisely detected based on the signal from 14c).

Next, we will explain the operation of the illustrated embodiment of the apparatus having such a configuration. First, the movement and holding operation of the traveling device (γ2) will be explained with reference to FIG. 2.6.

When the traveling device f (7) is placed on the inner circumferential surface near the end (2) of the upper tubular member (1), the traveling device (γ) moves by itself due to the rotation of the wheels (8), and the wheels (8) ] The rotating part is the end (2)
The machine stops when it reaches a preset value that corresponds to the distance from to the processing position. When the processing position is reached, the traveling device (7) is placed in the retracted state with the extension legs (9a
) to (9C) are simultaneously extended and brought into contact with the circumferential surface of the blind member (1) and held in a hollow state as shown in FIG. 6(a)*(1)). In addition, at the time of this maintenance,
The center of the laser intake hole (10a) of the laser processing head (δ) mounted on the moving device (7) is arranged to be on the central axis of the tubular member (1).

Next, tubular m material (1) (D cutting mf'[rji3
The y4 diagram will be explained. When the traveling device (γ) is completely held, the laser oscillator (8) emits the laser beam (6)'
k Insert the member (1) from the 4th part (2) side into the construction part (1).
Insert it along the central axis of the This input laser beam (6
) passes through the hole (10a) and enters the laser processing head (5 units), is changed in direction by the reflectors 1 and 11, and then passes through the lens system (12), with the tubular member ( 1)
Focus on the inner surface? tie. While maintaining this focal point formation state W=, the laser processing head (5) is gradually rotated around the axis of the input laser beam (6), and the tubular member (1) is
There is no cutting.

In addition, the laser beam (6) is input by the laser emitter (8).
If the support does not coincide with the central axis of the tubular member (1),
The laser beam (6) passes through at least one of the small holes (13a) to (16) provided in the reflecting mirror 0η, and the laser beam (6) passes through the small hole of the laser sensor (14a) to (14c). The detection signal of the laser light from the corresponding one is detected by the traveling device (γ
) The n/S0 traveling device (7) sends a shift signal to the laser oscillator (8) from the transmitting circuit of the same group via the S line or M line based on each issue. Accordingly, the laser source (8) can correct the axis of the laser beam to coincide with the central axis of the tubular member (1) based on this deviation number 1g, and emit laser beam sound.

By doing as described above, the inner peripheral surface of the tubular member (1) can be accurately machined no matter how far the machining position is from the end (2).

In the illustrated embodiment, there are three extension legs, but any number may be used as long as it can stably hold the traveling device. In addition, in the above explanation, there is no example of transmission and reception of the power supply for running and the operation control G from the outside of the tubular member to the running device, but it may be based on the M line, or it may be done without or by the gland. It may even be something. Furthermore, the position of the laser sensor need not be limited to the rear of the reflecting mirror, but may be placed near the laser beam intake hole or near the glory lens system.

Also, the rotating surface of the laser processing head does not need to be limited to a plane perpendicular to the central axis of the tubular member, but rather at a spherical angle with respect to the central axis. A rotational surface is also possible. Furthermore, the tubular member that is the workpiece need not be limited to having a circular cross section as long as the focal position of the laser beam can be controlled as appropriate.

As explained above, according to the present invention, there is a machine for removing tubular parts. , the target moves inside the tubular member and stops at a fixed position in one direction 1) TH
An e-travel device is attached to the traveling device, and the input laser beam is received by the light receiving section and the direction of the received laser beam is changed to form a focal point on the inner periphery of the neck member. It consists of a laser processing head that rotates to process the inner circumferential surface of the tubular part, and a laser processing head that rotates to process the inner circumferential surface of the tubular part, and a laser processing head that rotates to process the inner circumferential surface of the tubular part, and a laser processing head that rotates to process the inner peripheral surface of the tubular part. Since the laser oscillation order is made by 7 points along the length of the laser beam, it is possible to easily perform laser processing at a predetermined position on the inner circumferential surface of any long tubular member. The effect of the system is 0.4, 12Nm, 1745. Figure 1 shows a schematic diagram of the proposed machining of parts using a laser beam, Figures 2 and 6. This is a schematic diagram showing the installation of a tubular member processing machine as an example of Akira Motomoto's loss. Figure 2 is a schematic diagram of the machine running inside the tubular member, and Figure 6 is the state in which the tubular member is held when it falls. FIG. 4 is a schematic diagram showing the formation of the processed red in the above-described embodiment.

(1): Tubular member (2): Tubular member end (S)
:Laser oscillator (5):Laser processing head (6):
Laser light (7) Two traveling devices In the figure, the same reference numerals indicate In'J- or corresponding parts.

Agent Oiwa Dan Yu (a) 5 Figure 4 5(b)

Claims (2)

[Claims] (1) A traveling device that can move freely within a construction member and stop at a predetermined fixed time, how does it move, how is it attached to the device, how does it receive the input laser beam, and what is the direction of the received laser beam? At the moment of conversion, it consists of a machining section with black dots 7 connected on the inner periphery of the tubular member, and rotates to attach the H periphery of the certificate member to the laser head of the machining section and to the outside of the soil dpi g-shaped member. Not provided
The laser beam from the end of the tubular member along the center of the blade was counted using a laser oscillator. (2) The front IID receiver specifies that if the original axis of the input laser beam and the center axis of the front 6-pin guard member do not match, the laser oscillator will be output with a misalignment effect. /) The tubular member was recorded in item 1 of the report on the waiting list.