CN111958114A - Four-axis optical fiber laser welding equipment - Google Patents

Abstract

The invention provides a four-axis optical fiber laser welding equipment, belonging to the technical field of welding equipment, comprising a machine table, a welding mechanism, a positioning mechanism, a cooling mechanism, a power supply mechanism and a control mechanism; the positioning mechanism includes a horizontal fixed connection with the top surface of the machine table. An X-axis device, a Z-axis device vertically connected to the top surface of the X-axis device, a Y-axis device vertically connected to the side of the Z-axis device, and a C-axis rotating shaft connected to one end of the Y-axis device; the welding mechanism includes a rotating shaft disposed on the C-axis. The laser welding head on the shaft, the laser generator installed inside the machine, and the gas protection device; the control system includes an industrial computer installed inside the machine, and a monitor, keyboard and mouse that are installed next to the machine and used in conjunction with the industrial computer. . The invention can realize automatic welding, greatly reduce the manual workload and requirements for special technical work, reduce human errors and manpower requirements, and improve production efficiency and product quality.

Description

A four-axis fiber laser welding equipment

technical field

The invention belongs to the technical field of welding equipment, in particular to a four-axis fiber laser welding equipment.

Background technique

With the continuous development and expansion of the company, the demand for products in the market is increasing day by day, and productivity is facing huge challenges. It becomes particularly important to improve productivity. The middle frame of the electric heating table products produced by our company has always been manually welded, but with the growth of market demand, the disadvantages of low efficiency of manual welding are prominent, and manual welding still has difficulties in welding, thermal stress deformation of workpiece welding, and welding. The quality is uneven, not beautiful and many other problems. Therefore, in order to improve productivity, improve product quality, ensure the consistency of product specifications during mass production, and at the same time solve the above-mentioned drawbacks of manual welding, there is an urgent need for a high degree of automation welding equipment for welding the middle frame of the electric heating table .

Fiber laser welding equipment is the first choice for the above requirements. Fiber laser welding equipment is a kind of laser welding equipment that couples a high-energy laser beam into an optical fiber, and after long-distance transmission, is collimated into parallel light by a collimating mirror, and then focused on the workpiece for welding. For the parts that are difficult to access to welding, flexible transmission non-contact welding is implemented, which has greater flexibility. The laser beam of the optical fiber transmission laser welding machine can realize the splitting of time and energy, and can process multiple beams at the same time, which provides conditions for more precise welding. Fiber laser welding is suitable for various complex welds, spot welding of various devices, and seam welding of thin plates within 1mm.

The invention patent with publication number CN108436264A proposes a four-station sliding table linkage laser welding machine. The four-station sliding table linkage laser welding machine includes a frame, a first sliding table workpiece feeding system, and a second sliding table workpiece feeding system. , the third sliding table workpiece feeding system, the fourth sliding table workpiece feeding system, the XYZ axis transmission system, the welding head and the laser welding system; the XYZ axis transmission system is installed on the upper end of the frame, and the welding head is installed in On the XYZ axis transmission system, the laser welding system is installed on the welding head; the XYZ axis transmission system drives the welding head and the laser welding system to move along the three directions of X, Y and Z, and the workpiece to be processed is processed. Laser welding. However, the angle of the laser head is fixed and cannot be rotated, so it can only weld a plane weld, and cannot weld a three-dimensional or special position weld. The four-station sliding table linkage laser welding machine is not suitable for the welding of complex workpieces, and cannot complete the welding seam of the top surface and the side welding seam of the middle frame of the electric heating table at one time, and the degree of automation is not high.

The utility model patent with the publication number CN209902473U proposes a laser welding device, the structure of which includes a machine base, the top surface of which is provided with a welding area; a displacement mechanism, which is provided on the machine base The top surface of the displacement mechanism is provided with a mounting plate, which can move up, down, left, right, front, and back in six directions above the welding area; a laser welding head, the laser welding head is arranged on the mounting plate ; an image positioning device, the image positioning device is provided on the mounting plate; and a height positioning device, which is provided on the mounting plate, the height positioning device can measure the distance between itself and the welding area spacing. The laser welding device uses a shift mechanism to control the laser welding head to move in six directions (that is, three-axis movement), but the angle of the laser welding head is fixed and cannot be rotated, and it also cannot meet the degree of automation when welding the middle frame of the electric heating table. requirements.

The utility model patent with the publication number CN207668702U proposes an optical fiber welding machine, the optical fiber welding machine includes a cabinet, a laser generator set in the cabinet, a working platform set on the upper end face of the cabinet, and a fixture set on the working platform a table, a laser welding head arranged above the fixture table, and a servo mechanism arranged on the working platform and used to drive the laser welding head to move in three-dimensional space; the servo mechanism includes an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism, and a Shaft lifting mechanism and rotating support mechanism for installing laser welding head. However, the optical fiber welding machine does not solve the problem that the welding point is easily oxidized, which will affect the performance of the welding product when used.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a four-axis fiber laser welding equipment in view of the deficiencies of the prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a four-axis fiber laser welding equipment, including a machine table, a welding table is arranged on the top surface of the machine table, and the four-axis fiber laser welding equipment also includes a welding table. a mechanism, a positioning mechanism provided on the machine table, a cooling mechanism for cooling the welding mechanism, a power supply mechanism for supplying power to each component, and a control mechanism for controlling the welding mechanism and the positioning mechanism;

The positioning mechanism includes an X-axis device that is horizontally and fixedly connected to the top surface of the machine table, a Z-axis device that is vertically connected to the top surface of the X-axis device, a Y-axis device that is vertically connected to the side of the Z-axis device, and A C-axis rotation axis connected to one end of the Y-axis device; the Z-axis device is perpendicular to the top surface of the machine table, the Y-axis device is parallel to the top surface of the machine table, and perpendicular to the X-axis device, the The C-axis rotation axis is arranged at one end of the Y-axis device close to the welding table;

The welding mechanism includes a laser welding head arranged on the C-axis rotation axis, a laser generator arranged inside the machine table, and a gas protection device. The laser welding head and the laser generator pass through a laser fiber. connect;

The control system includes an industrial computer arranged inside the machine, a display, a keyboard and a mouse that are arranged beside the machine and used in conjunction with the industrial computer, the industrial computer, the positioning mechanism and the welding machine. Institutional signal connection.

Further, the positioning mechanism also includes an X-axis motor arranged at one end of the X-axis device, a Z-axis motor arranged at the top of the Z-axis device, and a Y-axis motor arranged at one end of the Y-axis device, so The Y-axis motor is arranged at one end of the Y-axis device away from the welding table.

Further, the welding mechanism further includes a CCD industrial camera and a welding monitor, the CCD industrial camera and the laser welding head are integrally arranged, and the welding monitor is arranged beside the machine, and is integrated with the CCD industrial camera. The camera is connected through the industrial computer signal.

Further, a fill light is arranged beside the CCD industrial camera.

Further, the welding table is provided with a jig for fixing the workpiece to be welded, and the jig includes one or more of a limiting device, a positioning device and a clamping device.

Further, the control system further includes a manual operation button and a multi-color indicator light arranged on the machine table.

Further, the machine table is provided with a towing bridge for placing the laser fiber.

Further, a file placement box is provided on the side of the machine table.

Further, the cooling mechanism includes a water cooling device and an air cooling device, the water cooling device is connected to the laser generator and the laser welding head through a cooling water pipe, and the air cooling device is arranged on the side of the machine table.

The beneficial effects of the present invention are as follows:

The positioning mechanism of the invention adopts the XYZ three-axis linkage mode, which can make the laser welding head reach the welding point quickly and has high positioning accuracy; Seam welding. The invention is equipped with a gas protection device, which not only has the function of preventing the welding point from being oxidized during the welding process, but also prevents the splash and smoke generated during welding from polluting the laser welding head and the optical lens of the CCD industrial camera, and can also inhibit the welding process. The shielding and scattering effect of the plasma cloud generated in the laser beam. The invention can realize the automatic welding of the middle frame of the electric heating table, greatly reduce the manual workload and the requirements of special technical work, reduce human errors and manpower requirements, improve the production efficiency and product quality, and solve the problem of waiting for welding caused by traditional welding methods. The problem of thermal deformation of the workpiece; when welding thick plates, the welding can be completed without filler metal.

The invention is equipped with a CCD industrial camera and a fill light, which can monitor the welding point condition in real time and avoid being burned by looking directly at the welding part with the naked eye; the invention is equipped with a file storage box, which can place documents such as operation regulations and production records, which is convenient for operators to take at any time. Take relevant documents for viewing or recording; the present invention is provided with a dragging bridge, which can tighten the laser fiber to prevent it from swinging to the welding point during welding and be damaged by laser irradiation; it can also prevent the laser fiber 33 from being damaged when it is bent; the present invention provides The multi-color indicator light will emit a warning light during welding to remind the staff to pay attention to protection, avoid looking directly at the light outlet of the laser welding head, and avoid eye or skin burns caused by too close to the laser welding head.

The invention is based on a high-performance control system using a computer control (CNC) system, adopts an advanced SOC (system-on-chip) architecture, and integrates the motion control algorithm, PLC processing, microprocessor, task cache and other subsystems in the FPGA to realize The high-speed, high-precision, real-time response of the motion control system has superior performance. A special logic circuit is applied to the laser equipment to effectively combine the laser control and the platform control trajectory motion control. The motion control adopts an IBM-PC with a standard PCI bus and its compatible computer as the host computer, which is easy to install and use. Powerful programming interface, Reduce debugging time and reduce the burden on application developers.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Figure 1: One of the schematic structural diagrams of Embodiment 1 of the present invention.

Figure 2: The second structural schematic diagram of Embodiment 1 of the present invention.

FIG. 3 is a schematic structural diagram of the positioning mechanism in Embodiment 1 of the present invention.

FIG. 4 is a cross-sectional structural diagram of the machine in Embodiment 1 of the present invention.

FIG. 5 is a cross-sectional structural diagram of the Y-axis device in Embodiment 1 of the present invention.

Figure 6: Electrical schematic diagram of the present invention.

FIG. 7 is a schematic structural diagram of Embodiment 2 of the present invention.

FIG. 8 is a schematic structural diagram of Embodiment 3 of the present invention.

FIG. 9 is a schematic structural diagram of Embodiment 4 of the present invention.

FIG. 10 is one of the schematic structural diagrams of Embodiment 5 of the present invention.

FIG. 11 is the second structural schematic diagram of Embodiment 5 of the present invention.

FIG. 12 is the third schematic structural diagram of Embodiment 5 of the present invention.

Figure 13: The working flow chart of the present invention.

Among them, 1- machine table, 11- observation window, 12- cooling window, 13- welding table, 14- telescopic support arm, 15- cable bridge, 16- file placement box, 17- tooling fixture, 171- limit position Device, 172-positioning device, 173-clamping device; 2-positioning mechanism, 21-X-axis device, 211-X-axis motor, 212-X-axis slide rail, 22-Y-axis device, 221-Y-axis motor, 222 -Y-axis slider, 223-threaded shaft, 23-Z-axis device, 231-Z-axis motor, 232-Z-axis slider, 233-Z-axis slide rail, 234-reinforcing block, 235-limit block, 24 -C-axis rotation axis; 31-laser welding head, 32-laser generator, 33-laser fiber, 34-CCD industrial camera, 35-fill light, 36-welding monitor; 41-industrial computer, 42-display, 43-multi-color indicator light, 44-manual operation button; 51-water cooling device, 511-cooling water pipe, 52-air cooling device; 6-power supply mechanism.

Detailed ways

In order to better understand the present invention, the content of the present invention is further clearly described below with reference to the embodiments and the accompanying drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details.

Example 1:

1-6, the present invention includes a machine 1, the machine 1 is a metal cabinet structure, the side is provided with an observation window 11 and a heat dissipation window 12, and an industrial computer 41 and a laser generator 32 are provided inside. The top surface of the machine table 1 is a welding work surface, and a welding table 13 is provided. The present invention also includes a positioning mechanism 2, a welding mechanism, a cooling mechanism, a power supply mechanism 6 and a control mechanism.

The positioning mechanism 2 is used for the positioning of the laser welding head 31 , is arranged on the top surface of the machine table 1 , and adopts an XYZ three-axis linkage method. As shown in FIG. 3 , the positioning mechanism 2 includes an X-axis device 21 , a Y-axis device 22 , a Z-axis device 23 and a C-axis rotation shaft 24 . The X-axis device 21 is a hollow columnar structure, placed horizontally, fixedly connected to the top surface of the machine table 1, and arranged beside the welding table 13. One end is fixedly provided with an X-axis motor 211, and the top is horizontally provided with an X-axis slide rail 212. The Z-axis device 23 is a hollow cylindrical structure, perpendicular to the top surface of the machine table 1, the bottom end is fixed on the X-axis slide rail 212 through the Z-axis slider 232, and the Z-axis motor 231 is fixed at the top, which is connected with the X-axis device A Z-axis slide rail 233 is vertically arranged on the vertical side of 21 . The Y-axis device 22 is a hollow cylindrical structure, which is parallel to the top surface of the machine table 1 and perpendicular to the X-axis device 21 , and a Y-axis motor 221 is fixedly arranged at one end away from the welding table 13 . on the Z-axis slide rail 233. The C-axis rotating shaft 24 is disposed at one end of the Y-axis device 22 adjacent to the welding table 13 .

5 is a cross-sectional structural view of the Y-axis device 22. As shown in FIG. 5, the Y-axis motor 221 is fixedly connected to the threaded shaft rod 223, and the connecting part of the Y-axis slider 222 and the threaded shaft rod 223 is provided with a threaded hole. The thread of the hole is consistent with the thread of the threaded shaft 223; when the Y-axis motor 221 rotates, it drives the threaded shaft 223 to rotate, and further drives the Y-axis slider 222 to move on the Y-axis device 22. When the Y-axis slider 222 is in a fixed position When not moving, the Y-axis device 22 can be driven to move. With the same structure, the Z-axis device 23 can move horizontally under the control of the X-axis motor 211 , and the Y-axis device 22 can move vertically under the control of the Z-axis motor 231 . The X-axis motor 211 , the Y-axis motor 221 and the Z-axis motor 231 are preferably servo motors that prevent high-frequency interference.

The welding mechanism includes a laser welding head 31, a laser generator 32, and a gas protection device. The laser welding head 31 is an integrated device with a built-in CCD industrial camera 34 and a rotating motor. The laser welding head 31 is arranged on the C-axis rotating shaft 24. The rotating motor can control the laser welding head 31 to swing; the laser generator 32 is arranged inside the machine table 1, and is connected with the laser welding head 31 through a laser fiber 33; the gas protection device uses a special gas to protect the welding point to avoid oxidation, and can Use carbon dioxide, nitrogen, helium, argon and other gases that do not have harmful chemical reactions with the welding body; the gas nozzle of the gas protection device is aligned with the welding point and is fixedly connected to the laser welding head 31. Move or swing together; the CCD industrial camera 34 is used to observe the welding position. In the welding process of the present invention, the strong visible light and invisible light (ultraviolet and infrared) will be generated, and the naked eye cannot directly observe the welding position, but the CCD industrial camera is used. 34 can safely monitor the condition of the welding point; the CCD industrial camera 34 is equipped with a supplementary light 35 and a welding monitor 36. The supplementary light 35 is used to illuminate the welding part and provide supplementary lighting for the CCD industrial camera 34, which is arranged on the CCD The industrial camera 34 can move or swing together with the CCD industrial camera 34 , preferably a 470nm blue light head with adjustable focus; the welding monitor 36 is used to display the monitoring image of the welding part, and is connected to the CCD industrial camera 34 through the industrial computer 41 signal. Wherein, both the laser welding head 31 and the laser generator 32 are commercially available devices, which are conventional technologies in the field.

In addition to preventing the welding point from being oxidized during the welding process, the gas protection device can also prevent the splash and smoke generated during welding from contaminating the optical lenses of the laser welding head 31 and the CCD industrial camera 34, and can also inhibit the welding process. The resulting plasma cloud shields and scatters the laser beam.

During the laser welding process, the welding mechanism continuously outputs high power, and the internal laser module will generate a lot of heat, resulting in an increase in temperature, so it must be equipped with an efficient cooling device. The cooling mechanism includes a water cooling device 51 and an air cooling device 52. The water cooling device 51 is connected to the laser generator 32 and the laser welding head 31 through a cooling water pipe 511 for cooling and heat dissipation of the welding system; On the side of the machine 1, it is used for heat dissipation of the equipment in the machine 1. The water cooling device 51 is preferably a water cooling machine with a constant temperature or intelligent temperature adjustment function, and a commercially available device can be selected.

The power supply mechanism 6 is used for the power supply of each component, and the input voltage is single-phase 220V/50Hz; the power supply mechanism 6 is provided with a precision voltage regulator, which can provide stable voltage to each component. The electrical schematic diagram of the present invention is shown in FIG. 6 .

The machine table 1 is also provided with a manual operation button 44 for manual control of the welding process, which can realize functions such as emergency stop, start, pause, start/stop laser, start/stop air jet and the like.

The control mechanism includes an industrial computer 41, a display 42, a keyboard and a mouse. The industrial computer 41 is used to control the positioning mechanism 2, the welding mechanism and other components to realize automatic control of the welding process. The supporting display 42 , the keyboard and the mouse are all arranged beside the machine 1 . In the specific implementation process, a telescopic support arm 14 can be installed on the cabinet, a bracket is provided at the end of the telescopic support arm 14, and the monitor 42, the keyboard and the mouse can be installed on the bracket, and the welding monitor 36 may also be mounted on the bracket. The telescopic support arm 14 adopts a retractable or foldable design, and the positions of the display 42, the keyboard and the mouse can be adjusted at any time during use, and can also be stowed away when not in use.

The industrial computer 41 of the present invention adopts IBM-PC compatible machine, supports standard PCI bus, and the main board adopts SOC (system on chip) architecture, and integrates motion control algorithms, PLC processing, microprocessor, task cache and other subsystems in FPGA to realize motion High-speed, high-precision, real-time response of the control system. The X-axis motor 211, the Y-axis motor 221, the Z-axis motor 231, the laser welding head 31, the laser generator 32, the gas protection device, the CCD industrial camera 34, the manual operation button 44, the welding monitor 36, the display 42, the Both the keyboard and the mouse are signal-connected to the industrial computer 41 .

The control mechanism of the present invention can realize laser emission/shutdown, adjustment of laser energy, on-off of protective gas, operation of servo motor, etc. in the welding process, and real-time acquisition of laser welding head 31, laser generator 32, CCD industrial camera 34. Signal or attitude information of components such as air circuit units.

Example 2:

Referring to FIG. 7 , the four-axis fiber laser welding equipment provided in this embodiment is based on Embodiment 1 with the following improvements: In order to increase the stability of the connection between the Z-axis device 23 and the X-axis device 21 , the Z-axis device 23 is connected to the X-axis device 21 . An L-shaped reinforcing block 234 is added at the connection of the Z-axis slide rail 233; in order to prevent the Y-axis device 22 from falling too low and damaging the CCD industrial camera 34 or the laser welding head 31, a limit block is set at the bottom of the Z-axis slide rail 233 235. Setting the reinforcement block 234 can prevent the positioning mechanism 2 from being deformed or damaged due to the offset of the center of gravity, which can improve the positioning accuracy during welding; setting the limit block 235 can prevent the Y-axis device 22 from being too low in travel, preventing the laser welding head 31 or the CCD industrial camera from being too low. 34 is damaged by hitting the workpiece to be welded or the welding head 13 .

Example 3:

Referring to FIG. 8 , the four-axis fiber laser welding equipment provided in this embodiment has the following improvements on the basis of Embodiment 2: a file placement box 16 is provided on the side of the machine 1 for placing operating procedures, production records, etc. document.

The applicant of the present invention requires the operator to record the welding workpiece and the working state of the welding machine during production. In this embodiment, a file storage box 16 is provided, and the operator can conveniently take the production record file during the production process to carry out the production process. Record.

Example 4:

Referring to FIG. 9 , the four-axis fiber laser welding equipment provided in this embodiment is based on Embodiment 3 with the following improvements: a dragging bridge 15 is set on the machine 1, a multi-color indicator light 43 is added to the control system, and the dragging Both the wire bridge 15 and the multi-color indicator light 43 are installed on the upper part of the machine table 1 . In this embodiment, the wire towing bridge 15 and the multi-color indicator light 43 are installed on the top surface of the machine table 1 through a shaft.

The drag line bridge 15 is in the shape of a bridge as a whole, including an arc-shaped surface and two arc-shaped baffles, and the arc-shaped baffles are arranged on the outer arc surface of the arc-shaped surface; the drag line bridge 15 is used for placing and fixing The laser fiber 33 can be tightened to prevent the laser fiber 33 from swinging to the welding point and being damaged by laser irradiation during welding; the bending radius of the laser fiber 33 is 200mm, when the bending radius of the conductive fiber is less than 200mm, it is easy to break, set The drag bridge 15 can also prevent the laser fiber 33 from being damaged or broken due to bending.

The multi-color indicator light 43 is signally connected to the industrial computer 41 to warn the working state of the present invention. In the welding process of the present invention, strong visible light and invisible light (ultraviolet and infrared) will be generated. When welding, the multi-color indicator light 43 can emit red flashes to remind the staff to pay attention to protection and avoid looking directly at the laser welding head 31. The light outlet should not be too close to the laser welding head 31 to cause eye or skin burns. In specific implementation, the multi-color indicator light 43 can be selected as red and green lights, which represent "dangerous" and "safe" states, respectively; and red, yellow, and green lights can also be selected, which represent "dangerous" and "warning" respectively. ” and a “safe” state. Of course, you can also choose any color of light to match and use according to actual needs.

Example 5:

Referring to FIGS. 10-12 , the four-axis fiber laser welding equipment provided in this embodiment is improved as follows on the basis of Embodiment 4: a tooling fixture 17 is installed on the welding table 13 , and the tooling fixture 17 is used to fix the waiting The welding workpiece includes a limiting device 171 disposed at the edge of the welding table 13 , a positioning device 172 and a clamping device 173 disposed in the middle of the welding table 13 .

The workpiece to be welded in this embodiment is the electric heating table middle frame produced by the applicant of the present invention, which is a cubic metal frame; the limiting device 171 is used to limit the movement of the electric heating table middle frame, and can fix the electric heating table middle frame. Each part of the middle frame of the heating table is to align the welding seam; the positioning device 172 is used for positioning the middle frame of the electric heating table to a fixed position; the clamping device 173 is arranged on the top of the positioning device 172 for clamping the electric heating The table frame prevents it from moving.

When other workpieces need to be welded, one or more of the limiting device 171 , the positioning device 172 and the clamping device 173 can be used to fix and position the workpiece to be welded according to the specific conditions of the workpiece to be welded.

Referring to FIG. 13, the main process of the four-axis fiber laser welding equipment of the present invention is to fix the workpiece to be welded on the fixture 17, the positioning mechanism 2 moves the laser welding head 31 to the welding point, the gas protection device ejects gas, and the laser welding The head 31 starts to emit laser for welding, and after the welding is completed, the laser welding head 31 stops emitting light, the gas protection device stops blowing, and the positioning mechanism 2 is reset.

In the present invention, the X-axis stroke is 0mm-500mm, the Y-axis stroke is 0mm-350mm, the Z-axis stroke is 0m-500mm, and the C-axis rotation angle is 0°-180°. After practice, the preferred minimum power of the laser generator 32 of the present invention is 1500W, the power adjustment range is 10%-100%, the wavelength range of the fiber laser is 1060nm-1100nm, and the center wavelength of the fiber laser is 1070nm-1090nm; the preferred minimum flow rate of the water cooling device 51 is 15L/min.

The technicians tested the prototype under the conditions of ambient temperature of 0-40℃, relative air humidity of 5%-85% without condensation, input voltage of 220V (±5%), and input voltage frequency of 50Hz, and checked the processing effect of the workpiece. Professional assessment.

The invention can realize welding in the range of X axis 0mm-500mm, Y axis 0mm-350mm, Z axis 0m-500mm, and the laser welding head 31 can be adjusted by 0°-180° inclination angle, and can realize plane, three-dimensional or special position welding. Weld seam welding, repeat positioning accuracy is ±0.01mm. The appearance size and various performance indicators of the processed workpiece meet the standard requirements, and the processing quality of the workpiece is better than the existing production line.

When welding the middle frame of the electric heating table, the invention can realize automatic welding, greatly reduce the manual workload and the requirements for special technical work, reduce human errors and manpower requirements, and improve the production efficiency and product quality; at the same time, it solves the problem of traditional welding The method causes the problem of thermal deformation of the workpiece to be welded; when welding thick plates, the welding can be completed without filler metal.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention do not depart from the spirit and the technical solutions of the present invention. The scope should be included in the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a four-axis optical fiber laser welding equipment, includes the board, the board top surface is provided with the welding bench, its characterized in that: the four-axis optical fiber laser welding equipment further comprises a welding mechanism, a positioning mechanism arranged on the machine table, a cooling mechanism used for cooling the welding mechanism, a power supply mechanism used for supplying power to all parts, and a control mechanism used for controlling the welding mechanism and the positioning mechanism;

the positioning mechanism comprises an X-axis device horizontally and fixedly connected with the top surface of the machine table, a Z-axis device vertically connected with the top surface of the X-axis device, a Y-axis device vertically connected with the side surface of the Z-axis device, and a C-axis rotating shaft connected with one end of the Y-axis device; the Z-axis device is perpendicular to the top surface of the machine table, the Y-axis device is parallel to the top surface of the machine table and is perpendicular to the X-axis device, and the C-axis rotating shaft is arranged at one end, close to the welding table, of the Y-axis device;

the welding mechanism comprises a laser welding head arranged on the C-axis rotating shaft, a laser generator arranged in the machine table and a gas protection device, and the laser welding head is connected with the laser generator through a laser optical fiber;

the control system comprises an industrial personal computer arranged inside the machine table, a display, a keyboard and a mouse, wherein the display, the keyboard and the mouse are arranged beside the machine table and used in a matched mode with the industrial personal computer, and the industrial personal computer is in signal connection with the positioning mechanism and the welding mechanism.

2. The quadcopter laser welding apparatus according to claim 1, wherein: the positioning mechanism further comprises an X-axis motor arranged at one end of the X-axis device, a Z-axis motor arranged at the top end of the Z-axis device and a Y-axis motor arranged at one end of the Y-axis device, wherein the Y-axis motor is arranged at one end of the Y-axis device and is far away from the welding table.

3. The quadcopter laser welding apparatus according to claim 1, wherein: the welding mechanism further comprises a CCD industrial camera and a welding monitor, the CCD industrial camera and the laser welding head are integrally arranged, and the welding monitor is arranged beside the machine table and is in signal connection with the CCD industrial camera through the industrial personal computer.

4. The quadcopter laser welding apparatus according to claim 3, wherein: and a light supplement lamp is arranged beside the CCD industrial camera.

5. The quadcopter laser welding apparatus according to claim 1, wherein: the welding bench is provided with a tooling fixture for fixing a workpiece to be welded, and the tooling fixture comprises one or more than two of a limiting device, a positioning device and a clamping device.

6. The quadcopter laser welding apparatus according to claim 1, wherein: the control system also comprises a manual operation button and a multi-color indicator light which are arranged on the machine table.

7. The quadcopter laser welding apparatus according to claim 1, wherein: and a wire dragging bridge for placing the laser fiber is arranged on the machine table.

8. The quadcopter laser welding apparatus according to claim 6, wherein: the side of the machine table is provided with a file placing box.

9. The quadcopter laser welding apparatus according to claim 1, wherein: the cooling mechanism comprises a water cooling device and an air cooling device, the water cooling device is connected with the laser generator and the laser welding head through a cooling water pipe, and the air cooling device is arranged on the side face of the machine table.

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