JPS5954485A - Laser working device for cutting tubular product - Google Patents

Abstract

PURPOSE:To enable the cutting of a tubular product in a flow stage where rotation is infeasible by providing a device which divides a laser beam to plural beams rotating in the outside circumferential direction of the tubular product, and a working head which follows up the rotation thereof and the linear feed of the tubular product. CONSTITUTION:The laser beam 2 from a CO2 laser device 1 is divided to beams 21, 22 by a beam splitter 3, and the beams are rotated in the outside circumferential direction of a pipe 4 as a housing 33 is rotated by a motor 34. When the housing 54 of an outside circumference working head 5 is rotated in synchronization with the rotation of the housing 33, the beams 21, 22 make a beam spot always on the outside surface of the pipe 4. On the other hand, when a housing 51 is moved by a motor 52 in the linear feed direction of the pipe 4 according to the rotation of the housing 54, said spot makes the combined movement of the rotating movement of the pipe 4 in the outside circumferential direction and the linar movement in the linear feed direction. If focusing mirrors 56, 57 are disposed approximately at 180 deg. angle, the outside circumference of the pipe 4 is cut by the half rotation of said mirrors.

Description

[Detailed description of the invention] [15 Fields of Application of Light J This chapter is concerned with high-power lasers (formerly 11 m + m-).
The peripheral machining head is suitable for cutting core-shaped products.

[Description of prior art]

In the conventional laser processing device for cutting α-shaped products, a processing head fixed to the outer periphery of the α-shaped product is viifed, and 1? Irradiate the product itself times + (i, i by laser beam Sakae νM product outside) zIII, \, 1-! Deichi1111noIL7
was. This is useless, it's 4 items are white line J Herisa Jl
During the flow process, the rotation of the a-shaped product itself is small.
Therefore, there was a drawback that the laser was not applied.

[Purpose of the Invention] The purpose of the present invention is to provide a laser processing device f that can cut this rt-shaped product in a flow process in which an a-shaped product cannot be rotated. .

[Invention glue]

The present invention provides a beam splitting device that converts a laser beam from a laser source into a beam of i+'Q d that rotates in the direction of the outer circumference of a monolithic product, and a beam splitting device that converts a laser beam from a laser source into a beam of i+'Q d that rotates in the direction of the outer circumference of a monolithic product, and It rotates in the direction of the outer circumference of the shaped product and is in the flow process. The above object is achieved by completely configuring the laser processing device with a processing head that follows the linear feed of the shaped product.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the figures.

Laser (coal, which is the raw material, is emitted with two laser beams from the Kogas laser device 1. This laser beam 2 enters the beam splitting device (I93). Rotating housing 3 rotatable via 32
3. A motor 34 that moves this rotating housing 33 by 11 degrees, and a beam splitter 35 with 14y and a attached to the rotating housing.
, and funeral reflection tax 36. :) 7, 3B and +I"9 are formed. The laser beam 2 is split into beams 2] and 22 by the beam splitter 3, and the pipe 4, which is a tubular product, is split into beams 2 and 22.
The light enters the outer circumferential processing head 5 along the outer circumference. The outer circumferential processing head 5 is arranged on the outer periphery of the pipe 4 in a moving housing 51 and a moving housing 51. assisting motor 52,
A rotating case 54 that can be rotated through a bearing 53, a motor 55 that drives this rotating case 54, and a rotating case 54 that rotates! R
Attached to body 54! L convergence 456.57 and (1
will be completed.

Next, we will explain why it is possible to cut the pipe 4, which is being fed linearly in the direction of the arrow 6 at a speed of one return, using the laser beam.
The beams 21 and 22 divided by 7.38 rotate in the direction of the outer circumference of the pipe 4 as the beam body 330 rotates in cooperation with the motor 34. At this time, when the housing 54 is rotated by the same amount as the rotation of the housing 33 and all the motors 55 are used, the rotating beams 21 and 22 are always focused and rotated 56 and 55, respectively.
7, and a beam spot is generated on the outer peripheral surface -H of the pipe 4. On the other hand, as the housing 540 rotates, the motor 52
When the housing 51 is moved 4゛6 in the linear feed direction of the pipe 4, the rotational movement in the outer circumferential direction of the pipe 4 and the straight line in the direction of the direct feed 9 occur due to the rotational movement of the stub B caused by the feed holes 56 and 57. Make a combined movement with movement jbh. Here, 415 bundles @
56 and 57 are arranged at an angle of approximately 18 (ml), the focusing mirror can be rotated by I5゛5 rotations to turn pipe 4.
The outer circumference can be cut. The dotted lines in this figure indicate the motor 52 and focusing mirrors 56, 57 at 52' and 56', respectively, at the time when cutting is completed.

and 57'. When V is completed, the laser device 1 is completely stopped, the motor 52 returns the L 2" body 51 to its original value, and the above process is repeated. Furthermore, further laser cutting can be performed.

〔Effect of the invention〕

According to one embodiment of the present invention, there is an advantage that laser cutting can be performed completely without stopping the flow process of a pipe that is being fed linearly.

In the present invention, the beam 2 is generally divided into n beams by the beam splitter 3, and correspondingly, the n focusing mirrors of the peripheral processing head 5 are arranged at approximately equal intervals in the outer circumferential direction of the pipe 4. can. In this case, since laser ζ'JllJi can be performed in one rotation of the Tokyo mirror, there is an effect that high-speed laser cutting can be performed by increasing n.

According to the present invention, the tubular product display (Ar
Since laser cutting can be performed without stopping the flow process, it has the effect of improving the efficiency of the flow process.

[Brief explanation of drawings]

The figure shows a carbon dioxide laser device +i'7 which is an embodiment of the present invention.
:*This is a 1-till sectional view of the pipe cutting laser processing device used. 1... Carbon dioxide laser device, 2... Laser beam,
21.22...Laser beam due to damage, 3...Beam splitting device, 4...Pipe, 5...Perimeter processing head. Continuing from page 1 @ Inventor Toshiharu Shirakura 3-1-1 Saiwai-cho, Hitachi City Stock% formula 433 Hitachi Research Institute, Hitachi, Ltd. 3-1-1 Saiwai-cho, Hitachi City

Claims (1)

[Claims] 1. In front of the laser source where all laser beams are generated 1; L”I
Laser processing device Y1 (in !1!I'
A self-adjustment is +Jit, direct re-send δ during the process.
In the θ-shaped product, the beam splitting device 97 converts it into +YQ number of beams rotating in the outer circumferential direction of the AiJ beam gold-shaped product, and the rotation of the front sv in and d beams is the same as υ. Then add the outer periphery (rotating in the circumferential direction and directing the product) 5, add to the illusion +1rt=
-\U-shaped product cutting 11 Lure processing device with 11J feature of having 2 rads.