Heavy rail roller fiber coupled semiconductor laser processing equipment

Abstract

The present invention relates to a heavy rail roller fiber-coupled semiconductor laser processing equipment, belonging to the technical field of machine tool equipment. The present invention first changes the arrangement order and method of the X-axis and the Y-axis to ensure that there is no interference above the processing head; secondly, on the basis of the above structure, an X-axis drag chain, a Y-axis drag chain and a Z-axis drag chain are added, and the cable (the optical fiber of the fiber-coupled semiconductor laser) is arranged in the drag chain. As long as the bending radius of the drag chain is guaranteed, the bending radius of the optical fiber can be guaranteed, thereby ensuring the safety of the optical fiber and the integrity of the equipment. The processing head in the present invention preferably adopts a fiber-coupled semiconductor laser, which has all the advantages of a semiconductor direct output laser, and adopts flexible optical fiber transmission, and the processing head is small in size and has many types. This combination can meet the processing of complex workpieces. The above structural setting can well meet the fiber arrangement requirements of the fiber-coupled semiconductor laser.

Description

Technical Field

[0001] The invention relates to a heavy rail roller optical fiber coupled semiconductor laser processing device, belonging to the technical field of machine tool equipment. Background Art

[0002] At present, the laser processing of large rollers mainly adopts carbon dioxide lasers. However, due to the defects of hard optical path copper mirror transmission, large size, low electro-optical conversion efficiency, large power loss, and long laser wavelength, the equipment has high cost, large footprint, and low efficiency. With the maturity of semiconductor laser technology, it is gradually replacing the application of carbon dioxide lasers in industrial remanufacturing. There are two main types of semiconductor lasers: direct output and fiber coupling. Direct output semiconductor lasers are not conducive to the remanufacturing of special-shaped holes and complex workpieces due to reasons such as focal length and installation method. Fiber-coupled semiconductor lasers can meet the remanufacturing of various complex workpieces due to their small processing head size and variety. They have many advantages such as small equipment size, high electro-optical conversion efficiency, and short laser wavelength.

[0003] Fiber-coupled semiconductor lasers use optical fiber to transmit lasers. Due to the flexibility of the optical fiber, the angle of the processing head can be adjusted arbitrarily, and different processing heads can be configured to achieve the processing of complex workpieces and the inner wall of the pipe. However, due to the particularity of the manufacturing material, the optical fiber of the fiber-coupled semiconductor laser has certain requirements on the bending radius, which is directly related to the core diameter of the optical fiber. Fiber-coupled semiconductor lasers are mainly used in conjunction with robots or machine tools, but they all face the problem of optical fiber layout. The main method now is suspension, which cannot guarantee the safe use of optical fibers, because robots or machine tools cannot ensure that the bending radius of the optical fiber meets the requirements in real time during movement. In addition, optical fiber suspension is not conducive to the appearance of the equipment.

[0004] The layout of existing laser processing equipment can be found in Figure 1 , mainly including a workbench, a processing head, a processing head fixture, an X-axis, a Y-axis and a Z-axis, among which the axes of the X-axis and the Z-axis are arranged horizontally and are perpendicular to each other, the axis of the Y-axis is arranged vertically, the Z-axis is fixedly installed on the workbench, the X-axis is directly connected to the Z-axis, the Y-axis is arranged to move up and down on the X-axis, and the processing head is installed below the Y-axis. This method will cause the Y-axis to interfere with the optical fiber during the angle adjustment of the processing head in the XZ plane. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a laser processing device to solve the problem of difficult cable arrangement of the current laser processing head.

[0006] The technical solution adopted by the present invention to solve the technical problem is: laser processing equipment, including a workbench, a processing head, a processing head fixture, an X-axis, a Y-axis and a Z-axis, the axes of the X-axis and the Z-axis are both arranged horizontally and perpendicular to each other, the axis of the Y-axis is arranged vertically, the Z-axis is fixedly installed on the workbench, a sliding base is installed on the Z-axis, the Y-axis is fixedly installed on the base, a sliding support seat is installed on the Y-axis, the X-axis is fixedly installed on the support seat, a sliding crossbeam is installed on the X-axis, and the processing head is installed on one side of the crossbeam through the processing head fixture end; an X-axis drag chain is arranged beside the X-axis, one end of the X-axis drag chain is connected to the crossbeam through a first connector, and the other end is connected to the support seat through a second connector; a Y-axis drag chain is arranged beside the Y-axis, one end of the Y-axis drag chain is connected to the support seat through a third connector, and the other end is connected to the base through a fourth connector; a Z-axis drag chain is arranged beside the Z-axis, one end of the Z-axis drag chain is connected to the base through a fifth connector, and the other end is connected to the workbench where the Z-axis is fixedly installed through a sixth connector; the cable of the processing head is installed through the X-axis drag chain, the Y-axis drag chain and the Z-axis drag chain.

[0007] Furthermore, the X-axis drag chain forms a U-shaped arrangement structure, and its U-shaped opening is located on the side facing the mounting processing head.

[0008] Furthermore, the inner circle bending radius of the X-axis drag chain, the inner circle bending radius of the Y-axis drag chain, and the inner circle bending radius of the Z-axis drag chain are all above 180 mm.

[0009] Furthermore: the direction of the cable of the processing head in the drag chain is set as the distribution line of the drag chain, the plane where the axis of the X-axis and the axis of the Y-axis are located is set as the XY plane, and the plane where the axis of the Y-axis and the axis of the Z-axis are located is set as the YZ plane, the distribution line of the X-axis drag chain and the distribution line of the Y-axis drag chain are both located in the XY plane, and the distribution line of the Z-axis drag chain is located in the YZ plane; the position of the first connector is higher than the position of the second connector, and the position of the third connector is higher than the position of the fourth connector; the position of the fifth connector is higher than the position of the sixth connector; the second connector is fixedly connected to the third connector or is arranged as an integral structure; the fourth connector is fixedly connected to the fifth connector or is arranged as an integral structure.

[0010] Furthermore, one end of the Z-axis drag chain used for connecting the sixth connector is a fixed end, and the fixed end of the Z-axis drag chain has a horizontally arranged drag chain supporting plate.

[0011] Furthermore, the processing head adopts a fiber-coupled semiconductor laser.

[0012] Furthermore, a workbench for fixing the Z-axis is provided with a workpiece mounting platform on its side, a tailstock is provided at one end of the workpiece mounting platform, a headstock assembly is provided at the other end, a bracket is provided in the middle of the workpiece mounting platform, the tailstock, the headstock assembly and the bracket cooperate to form an installation station for the rolling mill workpiece, and a processing head is arranged above the installation station for the rolling mill workpiece.

[0013] The beneficial effects of the present invention are: first, by changing the arrangement order and method of the X-axis and the Y-axis, it is ensured that there is no interference above the processing head; secondly, on the basis of the above structure, an X-axis drag chain, a Y-axis drag chain and a Z-axis drag chain are added, and the cables (optical fibers of fiber-coupled semiconductor lasers) are arranged in the drag chains. As long as the bending radius of the drag chain is guaranteed, the bending radius of the optical fiber can be guaranteed, thereby ensuring the safety of the optical fiber and the integrity of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of laser processing equipment in the prior art;

[0015] Figure 2 It is a structural schematic diagram of the laser processing equipment in the present invention;

[0016] Figure 3 yes Figure 2 Left view of

[0017] Figure 4 It is a schematic diagram of the overall layout of the drag chain in the present invention;

[0018] Figure 5 yes Figure 4 Left view of

[0019] Figure 6 It is a working schematic diagram of the Z-axis drag chain in the present invention;

[0020] Figure 7 It is a working schematic diagram of the X-axis drag chain in the present invention;

[0021] Figure 8 It is a working schematic diagram of the Y-axis drag chain in the present invention.

[0022] Marked in the figure: 1-X axis, 2-Y axis, 3-Z axis, 4-base, 5-support seat, 6-crossbeam, 7-X axis drag chain, 8-Y axis drag chain, 9-Z axis drag chain, 10-headstock assembly, 11-machining head, 12-machining head fixture, 13-tail stock, 14-bracket, 15-workbench, 21-first connector, 22-second connector, 23-third connector, 24-fourth connector, 25-fifth connector, 26-sixth connector. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 2 to 5 As shown, the present invention includes a workbench 15, a processing head 11, a processing head fixture 12, an X-axis 1, a Y-axis 2 and a Z-axis 3. The axes of the X-axis 1 and the Z-axis 3 are both arranged horizontally and perpendicular to each other. The axis of the Y-axis 2 is arranged vertically. The Z-axis 3 is fixedly installed on the workbench 15. A slidable base 4 is installed on the Z-axis 3. The Y-axis 2 is fixedly installed on the base 4. A slidable support seat 5 is installed on the Y-axis 2. The X-axis 1 is fixedly installed on the support seat 5. The X-axis 1 is generally installed at the top position of the support seat 5. A slidable crossbeam 6 is installed on the X-axis 1. The processing head 11 is installed at one end of the crossbeam 6 through the processing head fixture 12. 1 is provided with an X-axis drag chain 7, one end of which is connected to the crossbeam 6 through a first connector 21, and the other end is connected to the support seat 5 through a second connector 22; a Y-axis drag chain 8 is provided on the side of the Y-axis 2, one end of which is connected to the support seat 5 through a third connector 23, and the other end is connected to the base 4 through a fourth connector 24; a Z-axis drag chain 9 is provided on the side of the Z-axis 3, one end of which is connected to the base 4 through a fifth connector 25, and the other end is connected to the workbench 15 where the Z-axis 3 is fixedly installed through a sixth connector 26; the cables of the processing head 11 are installed through the X-axis drag chain 7, the Y-axis drag chain 8 and the Z-axis drag chain 9. Among them, the processing head fixture and the drag chain are all existing conventional components. The present invention ensures that there is no interference above the processing head 11 by changing the arrangement order and method of the X-axis 1 and the Y-axis 2. During operation, the processing head 11 can be adjusted to any angle within the range of 180° (±90°) on the XZ plane and 90° (-20° to +70°) on the XY plane.

[0025] The X-axis drag chain 7 forms a U-shaped arrangement structure, and its U-shaped opening is located on the side facing the processing head 11. In this way, the bending portion of the X-axis drag chain 7 is located on the side away from the processing head 11. The X-axis drag chain 7 will not cause any impact on the processing head 11 when moving following the crossbeam 6.

[0026] In order to better meet the bending radius requirements of the optical fiber, the inner ring bending radius of the X-axis drag chain 7, the inner ring bending radius of the Y-axis drag chain 8, and the inner ring bending radius of the Z-axis drag chain 9 in the present invention are all above 180 mm. Since the optical fiber is arranged in the drag chain, its bending radius must be greater than the inner ring bending radius of the drag chain. As long as the inner ring bending radius of the drag chain is controlled to be above 180 mm, the bending radius of the optical fiber can be guaranteed to be above 180 mm, thereby meeting the safety requirements of the optical fiber.

[0027] by Figures 6 to 8Taking the embodiment shown in the figure as an example, the stroke of the Z-axis 3 of the present invention is 3400 mm, the inner circle bending radius of the Z-axis drag chain 9 is about 210 mm, the outer circle bending radius is about 310 mm, and the relative height difference between the fifth connector 25 and the sixth connector 26 is 525 mm (measured at the same position of the two, for example Figure 6 The bottom surface of the fifth connector 25 and the bottom surface of the sixth connector 26 in the X-axis 1); the stroke of the X-axis 1 is 1000mm, the inner circle bending radius of the X-axis drag chain 7 is about 240mm, the outer circle bending radius is about 280mm, and the relative height difference between the first connector 21 and the second connector 22 is 515mm (measured at the same position of the two, for example, Figure 7 The bottom surface of the first connector 21 and the bottom surface of the second connector 22); the stroke of the Y-axis 2 is 500mm, and the minimum bending radius of the inner circle of the Y-axis drag chain 8 is 200mm ( Figure 7 The bending radius of the inner ring of the drag chain at four different positions is 200mm, 300mm, 200mm, and 252mm respectively), and the relative height difference between the third connector 23 and the fourth connector 24 is at least 675mm (measured at the same position of the two, for example Figure 8 In this embodiment, the stroke of the Y-axis 2 is 500 mm, so the maximum relative height difference between the third connector 23 and the fourth connector 24 is 1175 mm. Through the above arrangement, the bending radius of the optical fiber can be guaranteed to be above 200 mm, meeting the above requirement that the bending radius of the optical fiber is above 180 mm.

[0028] According to the actual situation of the machine tool, the drag chain can be arranged vertically (i.e., the drag chain is bent in the vertical plane) or laterally (i.e., the drag chain is bent in the horizontal direction). To facilitate the arrangement of cables, the present invention can also adopt the following preferred arrangement: the direction of the cable of the processing head 11 in the drag chain is set as the distribution line of the drag chain, the plane where the axis of the X-axis 1 and the axis of the Y-axis 2 are located is set as the XY plane, the plane where the axis of the Y-axis 2 and the axis of the Z-axis 3 are located is set as the YZ plane, the distribution line of the X-axis drag chain 7 and the distribution line of the Y-axis drag chain 8 are both located in the XY plane, and the distribution line of the Z-axis drag chain 9 is located in the YZ plane; the position of the first connector 21 is higher than the position of the second connector 22, the position of the third connector 23 is higher than the position of the fourth connector 24; the position of the fifth connector 25 is higher than the position of the sixth connector 26; the second connector 22 is fixedly connected to the third connector 23 or is set as an integral structure; the fourth connector 24 is fixedly connected to the fifth connector 25 or is set as an integral structure. Through the above arrangement, the specific direction of the optical fiber is "processing head 11 → the location of the first connector 21 → X-axis drag chain 7 → the location of the overall structure of the second connector 22 and the third connector 23 → Y-axis drag chain 8 → the location of the overall structure of the fourth connector 24 and the fifth connector 25 → Z-axis drag chain 9 → the location of the sixth connector 26", which has the following advantages: (1) in the height direction, from top to bottom, they are arranged in sequence as X-axis drag chain 7, Y-axis drag chain 8 and Z-axis drag chain 9, with clear layers; (2) the distribution of X-axis drag chain 7 The distribution lines of the Y-axis drag chain 8 and the Z-axis drag chain 9 are both located in the XY plane, and the distribution lines of the Z-axis drag chain 9 are located in the YZ plane, that is, the optical fiber is mainly arranged in two installation planes, which reduces the possibility of bending of the optical fiber, especially avoids the irregular arrangement of the cables, and ensures the safety of the optical fiber to the greatest extent; (3) the second connector 22 is fixedly connected to the third connector 23 or is arranged as an integrated structure; the fourth connector 24 is fixedly connected to the fifth connector 25 or is arranged as an integrated structure, which reduces the intermediate transition arrangement section of the optical fiber, and can better ensure the safety of the optical fiber.

[0029] One end of the Z-axis drag chain 9 used for connecting the sixth connector 26 is a fixed end. Since the stroke of the Z-axis 3 is relatively long, the fixed end of the Z-axis drag chain 9 is provided with a horizontally arranged drag chain support plate, which can effectively ensure that the fixed end of the Z-axis drag chain 9 is arranged horizontally.

[0030] The processing head 11 in the present invention preferably adopts a fiber-coupled semiconductor laser, which has all the advantages of a semiconductor direct output laser, and adopts flexible optical fiber transmission. The processing head 11 is small in size and has many types. This combination can meet the processing of complex workpieces, and is particularly suitable for the processing of heavy rail rollers in the present invention.

[0031] The present invention can be applied to various existing laser processing equipment. Taking a large roller processing equipment as an example, the specific implementation method is as follows: a workbench 15 for fixing and installing the Z axis 3 is provided with a workpiece mounting platform on its side, a tailstock 13 is provided at one end of the workpiece mounting platform, and a headstock assembly 10 is provided at the other end, and a bracket 14 is provided in the middle of the workpiece mounting platform. The tailstock 13, the headstock assembly 10 and the bracket 14 cooperate to form a roller workpiece mounting station, and a processing head 11 is arranged above the roller workpiece mounting station.

Claims

1. A laser processing device, comprising a workbench (15), a processing head (11), a processing head fixture (12), an X-axis (1), a Y-axis (2) and a Z-axis (3), wherein the axis of the X-axis (1) and the axis of the Z-axis (3) are both arranged horizontally and perpendicular to each other, the axis of the Y-axis (2) is arranged vertically, the Z-axis (3) is fixedly mounted on the workbench (15), and a slidable base (4) is mounted on the Z-axis (3), characterized in that: The Y-axis (2) is fixedly mounted on the base (4), a slidably mounted support seat (5) is mounted on the Y-axis (2), the X-axis (1) is fixedly mounted on the support seat (5), a slidably mounted crossbeam (6) is mounted on the X-axis (1), and a processing head (11) is mounted on one end of the crossbeam (6) via a processing head fixture (12); an X-axis drag chain (7) is arranged on the side of the X-axis (1), one end of the X-axis drag chain (7) is connected to the crossbeam (6) via a first connector (21), and the other end is connected to the support seat (5) via a second connector (22); A Y-axis drag chain (8) is provided, one end of the Y-axis drag chain (8) is connected to the support seat (5) through a third connector (23), and the other end is connected to the base (4) through a fourth connector (24); a Z-axis drag chain (9) is provided beside the Z-axis (3), one end of the Z-axis drag chain (9) is connected to the base (4) through a fifth connector (25), and the other end is connected to a workbench (15) on which the Z-axis (3) is fixedly installed through a sixth connector (26); the cable of the processing head (11) is installed through the X-axis drag chain (7), the Y-axis drag chain (8) and the Z-axis drag chain (9); The X-axis drag chain (7) forms a U-shaped arrangement structure, wherein the U-shaped opening is located on the side facing the mounting processing head (11); The inner ring bending radius of the X-axis drag chain (7), the inner ring bending radius of the Y-axis drag chain (8), and the inner ring bending radius of the Z-axis drag chain (9) are all above 180 mm; The direction of the cable of the processing head (11) in the drag chain is set as the distribution line of the drag chain, the plane where the axis of the X-axis (1) and the axis of the Y-axis (2) are located is set as the XY plane, the plane where the axis of the Y-axis (2) and the axis of the Z-axis (3) are located is set as the YZ plane, the distribution line of the X-axis drag chain (7) and the distribution line of the Y-axis drag chain (8) are both located in the XY plane, and the distribution line of the Z-axis drag chain (9) is located in the YZ plane; the position of the first connector (21) is higher than the position of the second connector (22), the position of the third connector (23) is higher than the position of the fourth connector (24); the position of the fifth connector (25) is higher than the position of the sixth connector (26); the second connector (22) and the third connector (23) are fixedly connected or arranged as an integral structure; the fourth connector (24) and the fifth connector (25) are fixedly connected or arranged as an integral structure.

2. The laser processing equipment according to claim 1, characterized in that: One end of the Z-axis drag chain (9) used for connecting to the sixth connector (26) is a fixed end, and the fixed end of the Z-axis drag chain (9) has a drag chain supporting plate arranged horizontally.

3. The laser processing equipment according to claim 1 or 2, characterized in that: The processing head (11) adopts a fiber-coupled semiconductor laser.

4. The laser processing equipment according to claim 3, characterized in that: A workbench (15) for fixing and mounting a Z axis (3) is provided with a workpiece mounting platform on its side, a tailstock (13) is provided at one end of the workpiece mounting platform, and a headstock assembly (10) is provided at the other end, a bracket (14) is provided in the middle of the workpiece mounting platform, the tailstock (13), the headstock assembly (10) and the bracket (14) cooperate to form a mounting station for a rolling workpiece, and a processing head (11) is arranged above the mounting station for the rolling workpiece.

Images