JPS5856486A - Laser and particularly for co2 gas transport laser - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laser, in particular a CO2 gas transport laser (CO2-Ga5 transport-1
O with respect to aθer
It can be seen that this relates to the prior art as known from No. 139. In such known devices, a double T-shaped support device, generally made of metal, is used as the support. As a support device for the laser discharge tube holding device, two angle iron members are welded to one end of a double T-shaped support device, and a metal plate is welded to the other end of this double T-shaped support device.
However, welding operations are expensive, and the welding strains cannot be satisfactorily eliminated.In the case of the large dimensions required for the support structure of the laser tube, stress balancing is expensive or almost impossible. It is possible that welding distortions may occur during or after assembly, leading to significant difficulties in adjusting the mirror; additionally, an increase in temperature may occur when joining two parts of C steel or other materials; Distortion occurs. This is because uneven heating effects occurring in the O support structure, especially in the support structure of the laser discharge tube holding device, due to the different elongations of the materials, can also lead to deterioration and instability of the laser performance. However, in support structures according to the known constructions mentioned above, the large number of bonding surfaces or joints between the individual structural parts gives rise to mutually contradictory requirements, so that it is not possible to use the perforation technique. It is possible to simplify manufacturing by placing the screw in a convenient position. C. It is possible to obtain good screw fixation. C. It is possible to obtain great rigidity when screwed in, and it does not cause distortion. The discharge tube and its holding device must be electrically insulated against the double T support device, which increases assembly and machining costs and prevents screw loosening due to force. The supporting structure must be made safe with respect to contact potential or ground potential, which requires the installation of protective devices or the installation of housings; however, such nosing is expensive and requires no machining. It's difficult because,
Furthermore, such a housing must be individually adapted to the shape of the respective support structure.
The support structure, consisting of a double T support device and a /1 housing, generates inertial forces during large movements, which in particular cut the moving parts of the laser, especially corner corners of the material, resulting in a right-angled curved path of motion. The metal double T-shaped support structure is suitable for short lengths of the discharge tube, since the inertial forces due to negative or positive acceleration create excessive loads on the machine guides when moving around the tube. (approximately It is known that such structures have the above-mentioned disadvantages, especially the length force; due to the long length stable laser operation is not guaranteed.The aim of the invention is low cost. It is an object of the present invention to provide a support structure for a laser having a power of 1 kilowatt or more, in particular a C02 gas transport laser, which can be manufactured with a power of about 1 kilowatt and ensures stable operation even in a laser with a power of about 1 kilowatt. In order to solve the above-mentioned objects, the present invention provides a support structure, preferably made of reinforced synthetic material. According to an advantageous embodiment of the invention, the supporting structure of the synthetic material is constructed as a box-shaped housing.
Consisting of two half-shells that can be manufactured by/-by constructing the support structure of synthetic material as housing, it is advantageous at the same time to avoid the need for an additional contact protection device for safety against earth potential. Since the possibility of constructing a protective insulator is available, all easily accessible parts that would create an earth potential in the event of an accident are additionally covered with a protective insulator, which is not supported. The epoxy resin constituting the outer layer of the structure, preferably a synthetic material reinforced with glass fibers, ensures reliable and durable insulation during operation of the laser. Preferably, it has a protective conductor and is made of epoxy resin.
Additional safety against contact potentials is also obtained by grounding the carbon fiber reinforced intermediate layer. This intermediate layer is also preferably made of epoxy resin and is likewise combined with a glass fiber reinforced housing inner layer. C Glass fibers or carbon fibers are arranged in a woven structure to provide isotropic reinforcement of the individual layers.

Furthermore, the walls of the nousing are provided with stress-receiving compression and tension members made of carbon fiber strips arranged in a zigzag pattern. In order to increase the longitudinal strength, a prefabricated bar made of epoxy resin with carbon fibers in the region of the longitudinal edges is provided parallel to the longitudinal edges. These rods are preferably enclosed within an intermediate layer.The synthetic resin structure according to the invention reduces the weight of the gas laser by at least 50 inches compared to known devices.This allows the laser guide to be The load on the machine guides is significantly reduced.

The box-like shape of the closed housing, defined by the upper and lower shells or upper and lower half-shells, has a low weight and high bending and torsional stiffness, meeting the requirements of support structures without requiring high costs. Advantageous reinforcing elements fitted to the ribs, which are advantageous to the ribs, additionally improve the static load-carrying capacity.

In lasers, especially mobile, gas lasers operating in the kilowatt range, various coordinates (X.

high speed (e.g. at least 12rr)
fi) causes the laser mounted on the guide machine to be loaded by various inertial forces. This dynamic force is absorbed or received by the support structure/housing. The loads acting on the synthetic material support structure with the woven glass and carbon fiber reinforcement and the attached components do not act on the holding device of the discharge vessel, thereby causing a misalignment of the laser resonator. will not occur. This ensures that the emitted laser beam remains constant even in the presence of the above-mentioned dynamic forces with respect to performance constants and laser beam parameters, e.g. beam density. The aligned perforations in the device and reinforcing member are tube retention devices;
These tube holding devices allow easy monitoring of the laser head with laser gas and cooling water. The medium introduced into the conduit through the respective tube is directly introduced into the laser head through the inlet of the tube, without the need for connecting elements such as e.g. elbow tubes or angle tubes. It serves as a support device for the laser discharge tube holding device, and its mounting plate is held in place by a device not detailed here and is connected to a support device located inside the housing, so that assembly of the mounting plate and Adjustments can be made easily, and the mounting plate can be manufactured economically by reducing the number of machined and joint surfaces.

In the following description, embodiments of the invention are presented with reference to the accompanying drawings.

In FIG. 1, the schematic structure of a CO2 gas laser, designated by the reference numeral 10, is shown. This laser 10
consists essentially of a number of laser discharge tubes mounted on a laser discharge tube holding device 12 which is assembled in alignment on a mounting plate 13 and mounted on a support structure 14. is combined with This support structure 14Fi consists of an upper half shell 15 and a lower half shell 16. The laser is designed to have a capacity of more than 1 kilowatt and has a discharge tube approximately 250 m long. Other parts of the laser are not shown for ease of illustration. A cutting head 17 having a mirror 18 is provided, the mirror 18 serving to bend the laser beam towards the surface of the workpiece 19.

In FIG. 2, an embodiment of the lower half-shell 16 of the support structure 14 is shown in detail. This lower half-shell, indicated in its entirety by 16, has a number of pU-shaped reinforcing members 20 inside it. A square support device 21 is installed between these reinforcing members 20.
are arranged, and it is preferable that Gs are aligned with each other in these support devices 21 to form a mounting plane and are stacked one on top of the other.
In the lower half shell 16, which is closed by the front walls 23 and 24 at both ends of the support structure 14, on which the mounting plate 13 made of FK (glass fiber reinforced synthetic material) is arranged, reinforcing members 20 and Perforations 25 aligned through the support device 21 are provided for receiving and retaining laser gas (helium-nitrogen-carbon dioxide-mixture) and cooling water supply conduits (not shown) within these perforations 25. The lower half-shell 16, in which the tube 26 is arranged, has on the outside 27 of the nousing a mounting 7 flange 28 for mounting a support structure 14 on the laser-guided machine, not shown. The upper half shell 15 has a mounting flange za (1 (1) formed symmetrically with the mounting flange 30 of the lower half shell 16.
) is placed on the mounting flange 30 of the lower half-shell 16 and tightened with screws 31. The half-shells 15 and 16 K are connected by up to 60 screws in a strong shape fit to each other, resulting in a closed symmetrical box-shaped force; this ensures stable laser operation. The detailed view of part A of FIG. 2 shown in FIG. 3 shows the construction of the support structure 14 according to the invention. The intermediate layer 33 connected to this layer 32 is made of carbon fiber composite material (CFK) and the outer housing layer 34 is preferably made of reinforced composite material (GFK). Layer 3 of Nira
2, 33, and 34 all consist of a laminate of a number of individual layers, not shown in detail, superimposed one on top of the other, each of these layers being in the form of a woven mat. GFK or CFK is preferably provided, and these fibers are arranged at angles of 0° to 90° and 4° to each other.
The intermediate layer 33 oriented at 5° has a longitudinal edge 3
5, a rod-shaped body 36 made of epoxy resin having a fibrous structure is surrounded so as to be parallel to the longitudinal edge. A rod-shaped body 38, also made of epoxy resin with a fibrous texture, is inserted into the inner layer 32 in the region of the longitudinal edge of the lower half-shell 16, which projects into the housing, parallel to the longitudinal edge. It is buried. Mounting 7 of Support Structure 14 A reinforcing plate 37 is placed on the outside 27 of the housing over the entire length of the flange 29.30, laminated to the support structure 14 to prevent damage to the mounting flange 29.30 when tightening the -1 screws. A compression and tension band (not shown) is additionally disposed in the intermediate layer 33, and the direction of the CFK fibers is the longitudinal direction. Embodiments of the invention can be summarized as follows, oriented in a zigzag manner with respect to the edge 35: Particularly in CO2 gas transport lasers, characterized in that said support structure Q41;65 consists of a reinforced synthetic material, in particular in Cot gas transport lasers (2) said support structure of synthetic material Q41; The laser according to item (1) above, wherein the laser is configured as a housing.

(3) The laser according to item (2) above, wherein the housing comprises two shells, preferably half shells Q5) and (161).

(4) The half-shells (15, 16) are formed of synthetic material layers stacked one above the other and bonded to each other, and these layers are a layer of GFK facing the inside of the housing ( 3
2), and this layer (32) is an intermediate layer (32) consisting of CFK.
33) The laser according to item (3) above, characterized in that the intermediate layer (33) is bonded to an outer housing layer (34) made of GFK. It has a rectangular shape and has a carbon fiber structure bar (
36) are provided parallel to the longitudinal edge (35),
Each of the lasers (6) according to any one of (2) to (4) above, characterized in that this rod-shaped body (36) is preferably surrounded by the intermediate layer (33). The laser according to item (4) or item (5), characterized in that glass fibers or carbon fibers are incorporated in the layers (32, 33, 34) in a fiber-like manner; (7) the intermediate layer; Items (4) to (4) above, characterized in that carbon fibers are additionally provided in the layer (33) as tension strips and compression strips arranged in a zigzag pattern in the longitudinal direction of the housing. The laser according to any of item (6).

(8) A reinforcing member (20) made of GFK and a support device (21) for the laser tube holding device (12, 13) are installed in the half shell (15, 16). The laser according to any one of items (4) to (7) above.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view, partially cut away, of a CO2 gas transport laser according to the invention. FIG. 2 is a perspective view of the lower housing half-shell. FIG. 3 is an enlarged sectional view of part A in FIG. 2. 10・・・・・・・・・・・・・・・CO2 gas transport laser 12・・・・・・・・・・・・
...Laser discharge tube holding device 13...
......Mounting plate 14...
......Support structure 15.16...
...Half-shell body 17...... Cutting head 18 ...... Schiller 19
・・・・・・・・・・・・・・・ Work material 20・
・・・・・・・・・・・・・・・・・・Reinforcement member 21...
・・・・・・・・・・・・・・・・Support device 28.29
, 30...Mounting flange 32......Inner layer 33......・・Intermediate layer 34・・・・・・・・・・・・・・・・Outer layer 36.38・・・・・・・・・・・・Rod-shaped body 37・・
・・・・・・・・・・・・・・・・・・Reinforcement plate patent applicant Metsser Griesnozom Gesellschaft Mituto Beschlenkter Ha7tunku

Claims (1)

[Claims] A laser having a discharge tube mounted in a support structure and a holding device thereof, in particular a CO2 gas transport laser, characterized in that 1, said support structure 04 consists of a reinforced synthetic material, Especially CO2 gas transport laser.