A slanted hole laser cutting device and method

Abstract

The application belongs to the field of laser cutting and discloses a kind of oblique hole laser cutting device and method, including first guide rail, first guide rail is rotated in first bidirectional screw, first bidirectional screw is screw-connected with two fixed frames on it, second rotating shaft is rotated in fixed frame, first bevel gear and second bevel gear are fixed at the both ends of second rotating shaft, third bevel gear is engaged on the side of first bevel gear, shaft sleeve is fixed on third bevel gear, shaft sleeve rotates with fixed frame, transmission shaft is also rotated between the both ends of first guide rail, both shaft sleeves are slidably connected on transmission shaft, fourth bevel gear is engaged on the side of second bevel gear, third rotating shaft is fixed on fourth bevel gear, second guide rail is fixed on third rotating shaft, first screw rod is rotated on second guide rail, second sliding block is screw-connected on first screw rod, telescopic rod is fixed on second sliding block, spring is sleeved on the side of telescopic rod, laser cutting gun is fixed on telescopic rod. It can complete cutting of thicker metal plate at one time.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of laser cutting, and particularly relates to a laser cutting device and method for inclined holes. BACKGROUND

[0002] Laser cutting is to irradiate the material to be cut by a high-power density laser beam, so that the material is quickly heated to the vaporization temperature, evaporates to form a hole, and with the movement of the light beam on the material, the hole continuously forms a narrow (such as about 0.1mm) cut seam, and the cutting of the material is completed.

[0003] For the cutting of thick plates, laser cutting can also be competent, but because continuous high-temperature heating is needed during cutting to melt and vaporize the material, as the thickness of the plate increases, the cutting efficiency and cost will also increase accordingly, which is also a big challenge for laser cutting in thick plates; when the thickness of the plate is large, the farther away from the head of the laser cutting gun, the lower the temperature of the laser beam, which reduces the efficiency of the metal plate being heated and melted, therefore, two laser cutting guns need to be arranged above and below to cut the metal plate, at the same time, in order to prevent the lasers of the two laser cutting guns from being gathered at the same point at the same time, they usually need to be staggered. If the lasers of the two laser cutting guns are gathered at the same point at the same time for cutting, it may cause the flame area to be too large, the thermal deformation to be intensified, or other adverse effects. By staggering the two laser cutting guns, this situation can be avoided, and uniform and accurate cutting of the metal part during the cutting process can be ensured. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide a laser cutting device and method for inclined holes, which solves the problem that thicker metal plates cannot be cut at one time.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A laser cutting device for inclined holes, comprising a workbench, a fixing mechanism and a three-axis adjusting mechanism are arranged on the workbench, and a cutting mechanism is arranged on the three-axis adjusting mechanism.

[0007] The cutting mechanism comprises a fixed frame fixedly connected with a three-axis adjusting mechanism, a first rotating shaft rotatably connected to the fixed frame, a first guide rail fixedly connected to the first rotating shaft, a first sliding groove formed in the first guide rail, a first bidirectional screw rotatably connected to the first sliding groove, first sliding blocks threadedly connected to the first bidirectional screw and sliding in the first sliding groove, a fixed frame fixedly connected to the first sliding blocks, a second rotating shaft rotatably connected to the fixed frame, first and second bevel gears fixedly connected to the two ends of the second rotating shaft, a third bevel gear meshing with the first bevel gear, a shaft sleeve fixedly connected to the third bevel gear and rotatably connected to the fixed frame, a transmission shaft rotatably connected between the two ends of the first guide rail, the two shaft sleeves being slidably connected to the transmission shaft, a fourth bevel gear meshing with the second bevel gear, a third rotating shaft fixedly connected to the fourth bevel gear and rotatably connected to the fixed frame, a second guide rail fixedly connected to the third rotating shaft, a second sliding groove formed in the second guide rail, a first screw rotatably connected to the second sliding groove, a second sliding block threadedly connected to the first screw and sliding in the second sliding groove, an extension rod fixedly connected to the second sliding block, a spring sleeved around the extension rod, and a laser cutting gun fixedly connected to the extension rod.

[0008] Further, the two ends of the extension rod are fixedly connected with stop blocks, the diameters of the stop blocks are greater than that of the extension rod, the two ends of the spring are fixedly connected with the stop blocks, one of the stop blocks is fixedly connected with the second sliding block, and the other stop block is fixedly connected with the laser cutting gun.

[0009] Further, the periphery of the laser cutting gun is provided with fixed rods, one end of each fixed rod is fixedly connected with a stop block, and the other end of each fixed rod is fixedly connected with a stop ring.

[0010] Further, a first motor is fixedly connected to the fixed frame, and the output end of the first motor is fixedly connected with the first rotating shaft.

[0011] Further, a second motor and a third motor are fixedly connected to the end of the fixed frame, the output end of the second motor is fixedly connected with the first bidirectional screw, and the output end of the third motor is fixedly connected with the transmission shaft.

[0012] Further, a third sliding groove is formed in the inner side of the shaft sleeve, and a sliding rod is fixedly connected to the periphery of the transmission shaft and slidably connected in the third sliding groove.

[0013] Further, a fourth motor is fixedly connected to the end of the second guide rail, and the output end of the fourth motor is fixedly connected with the first screw.

[0014] Further, the fixing mechanism comprises fixing plates fixedly connected on both sides of the workbench, a second bidirectional lead screw rotatably connected between the two fixing plates, a moving plate threadedly connected on the threads of the second bidirectional lead screw in two different directions, a clamping frame fixedly connected to the upper end of the moving plate, a second lead screw threadedly connected to the upper end of the clamping frame, a clamping block fixedly connected to the lower end of the second lead screw, and a rotating piece fixedly connected to the upper end of the second lead screw.

[0015] One of the fixing plates is fixedly connected with a fifth motor, and the output end of the fifth motor is fixedly connected with the second bidirectional lead screw.

[0016] The two sides of the second bidirectional lead screw are provided with guide rods parallel to the second bidirectional lead screw, the guide rods are slidably connected with the moving plate, and the two ends of the guide rods are fixedly connected with the fixing plates.

[0017] Further, the three-axis adjusting mechanism comprises a table arm fixedly connected to the workbench, a first electric sliding rail fixedly connected to the table arm, a third sliding block slidably connected to the first electric sliding rail, a second electric sliding rail fixedly connected to the third sliding block, a fourth sliding block slidably connected to the second electric sliding rail, a third electric sliding rail fixedly connected to the fourth sliding block, a fifth sliding block slidably connected to the third electric sliding rail, an extension arm fixedly connected to the fifth sliding block, and a fixing frame fixedly connected to the other end of the extension arm.

[0018] A method for using a laser cutting device for inclined holes, comprising the following steps:

[0019] Fixing: according to the width of the metal plate, the second bidirectional lead screw is driven to rotate, the distance between the two moving plates is adjusted, and the distance between the two clamping frames is adjusted, and the two ends of the metal plate are placed in the clamping frames, the clamping block is clamped by rotating the second lead screw to fix the metal plate;

[0020] Adjusting: the first electric sliding rail, the second electric sliding rail and the third electric sliding rail are cooperatively arranged to drive the extension arm to adjust the position of the laser cutting gun in the three-dimensional space, so as to cut different parts of the metal plate.

[0021] Cutting: according to the inclination angle of the inclined hole, the first rotating shaft drives the first guide rail to deflect, so that the laser cutting gun is arranged inclinedly with the metal plate, the inclination angle is same as the inclination angle of the inclined hole, the first screw rod is driven to rotate to drive the second sliding block to move, and then the distance between the axis of the laser cutting gun and the axis of the third rotating shaft is adjusted, the distance is the radius distance of the inclined hole, the first bidirectional screw rod is driven to drive the two first sliding blocks to move towards each other, and then the two fixed frames move towards each other, so that the upper and lower laser cutting guns move towards the metal plate, wherein when the two fixed frames move towards each other, the shaft sleeve moves along the transmission shaft, the transmission shaft is driven to rotate to drive the third bevel gear to rotate, and then the first bevel gear, the second rotating shaft, the second bevel gear and the fourth bevel gear are driven to rotate to drive the second guide rail to rotate, the second guide rail drives the laser cutting gun to rotate around the third rotating shaft, and the laser cutting gun cuts the inclined hole on the metal plate.

[0022] The nouns, conjunctions or adjective parts involved in the above technical solutions are explained as follows:

[0023] Fixed connection refers to the connection of parts or components after being fixed, without any relative movement.

[0024] (1) The detachable connection is to fix the parts together by using screws, keys and wedge pins. This connection mode can be disassembled during maintenance, and the parts will not be damaged. However, the specifications of the connecting parts such as bolts, keys and wedge pins must be correct, and the fastening must be appropriate.

[0025] (2) The non-detachable connection mainly refers to welding, riveting and tenon fitting. Since maintenance or replacement requires forging, sawing or oxygen cutting for disassembly, the parts cannot be used twice. At the same time, attention should be paid to the process quality, technical detection and remedial measures (such as correction, polishing, etc.) during connection.

[0026] Threaded connection refers to the detachable connection of connected parts by using threaded parts (or threaded parts of connected parts).

[0027] Sliding connection refers to the contact between two objects without fixation, and the two objects can slide relative to each other.

[0028] Rotary connection refers to the connection between parts that allows the parts to rotate relative to each other.

[0029] Advantages of the present application:

[0030] 1. The metal plate is fixed horizontally by the fixing mechanism, and the position of the cutting mechanism is adjusted by the three-axis adjusting mechanism, so that the metal plate is located between the two laser cutting guns. In the initial stage, the first guide rail is arranged in a vertical direction, and the laser cutting gun and the third rotating shaft are on the same axis. At this time, the laser cutting gun is also arranged in a vertical direction. According to the inclination angle of the inclined hole, the first rotating shaft drives the first guide rail to deflect, so that the laser cutting gun is arranged obliquely with the metal plate. The inclination angle is the same as the inclination angle of the inclined hole. The first screw rod is driven to rotate to drive the second sliding block to move, thereby adjusting the distance between the axis of the laser cutting gun and the axis of the third rotating shaft. The distance is the radius distance of the inclined hole. The first double lead screw is driven to move the two first sliding blocks towards each other, thereby adjusting the two fixed frames to move towards each other, so that the upper and lower laser cutting guns move towards the metal plate. When the two fixed frames move towards each other, the shaft sleeve moves along the transmission shaft. The transmission shaft is driven to rotate to drive the third bevel gear to rotate. Through the transmission of the first bevel gear, the second rotating shaft, the second bevel gear and the fourth bevel gear, the second guide rail is driven to rotate. The second guide rail drives the laser cutting gun to rotate around the third rotating shaft. The laser cutting gun cuts a round hole on the metal plate. At this time, the round hole is a slant hole on the metal plate.

[0031] 2. In order to avoid local high temperature of the metal plate, the two laser cutting guns are arranged staggered, that is, the connection between the two laser cutting guns coincides with the center of the inclined hole. The two laser cutting guns rotate in the same direction to cut the metal plate.

[0032] 3. Since the laser cutting gun is arranged obliquely, when the laser cutting gun rotates around the center of the inclined hole, the telescopic rod cooperates with the spring to make the laser cutting gun always adhere to the surface of the metal plate, avoiding the cutting temperature from being reduced due to the laser cutting gun being away from the surface of the metal plate.

[0033] 4. Under the elastic force of the spring, the retaining ring is always in contact with the surface of the metal plate, avoiding friction between the head of the laser cutting gun and the surface of the metal plate, and playing a role in protecting the laser cutting gun. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor.

[0035] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0036] Figure 2 is a schematic diagram of the fixing mechanism structure of the embodiment of the present application;

[0037] Figure 3 is a structure schematic diagram of a three-axis adjusting mechanism of an embodiment of the present application;

[0038] Figure 4 is a structure schematic diagram of a cutting mechanism provided with a plate of an embodiment of the present application;

[0039] Figure 5 is a structure schematic diagram of a cutting mechanism not provided with a plate of an embodiment of the present application;

[0040] Figure 6 is a structure schematic diagram of an internal structure of a first guide rail of an embodiment of the present application;

[0041] Figure 7 is a structure schematic diagram of an internal structure of a fixed frame of an embodiment of the present application;

[0042] Figure 8 is a structure schematic diagram of an internal structure of a second guide rail of an embodiment of the present application;

[0043] Figure 9 is a structure schematic diagram of a connection structure of a shaft sleeve and a transmission shaft of an embodiment of the present application;

[0044] Figure 10 is a structure schematic diagram of a cooling mechanism of an embodiment of the present application;

[0045] Figure 11 is a structure schematic diagram of a part of a nozzle of an embodiment of the present application. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0048] Embodiment one

[0049] As Figures 1 to 9As shown, a kind of oblique hole laser cutting device, including workbench 100, be provided with fixed mechanism 200 and three-axis adjusting mechanism 300 on workbench 100, be provided with cutting mechanism 400 on three-axis adjusting mechanism 300;

[0050] Cutting mechanism 400 includes fixed frame 401 with three-axis adjusting mechanism 300 fixed connection, first rotating shaft 402 is rotatably connected on fixed frame 401, first guide rail 403 is fixedly connected on first rotating shaft 402, first sliding groove 404 is opened in first guide rail 403, first bidirectional screw 405 is rotatably connected in first sliding groove 404, the first sliding block 406 sliding in first sliding groove 404 is threadedly connected on the thread of the two different rotation directions of first bidirectional screw 405, first sliding block 406 is fixedly connected with fixed frame 407, second rotating shaft 408 is rotatably connected in fixed frame 407, first bevel gear 409 and second bevel gear 410 are fixedly connected on the two ends of second rotating shaft 408, third bevel gear 411 is engaged on the week side of first bevel gear 409, shaft sleeve 412 is fixedly connected on third bevel gear 411, and shaft sleeve 412 is rotatably connected with fixed frame 407, transmission shaft 413 is rotatably connected between the two ends of first guide rail 403, and two shaft sleeves 412 are slidably connected on transmission shaft 413, fourth bevel gear 414 is engaged on the week side of second bevel gear 410, third rotating shaft 415 is fixedly connected on fourth bevel gear 414, and third rotating shaft 415 is rotatably connected with fixed frame 407, second guide rail 416 is fixedly connected on third rotating shaft 415, second sliding groove 417 is opened in second guide rail 416, first screw rod 418 is rotatably connected in second sliding groove 417, second sliding block 419 sliding in second sliding groove 417 is threadedly connected on first screw rod 418, telescopic rod 420 is fixedly connected on second sliding block 419, spring 421 is sleeved on the week side of telescopic rod 420, and laser cutting gun 422 is fixedly connected on telescopic rod 420.

[0051] In use, the metal plate is fixed horizontally by the fixing mechanism 200, and the position of the cutting mechanism 400 is adjusted by the three-axis adjusting mechanism 300, so that the metal plate is located between the two laser cutting guns 422. In the initial stage, the first guide rail 403 is arranged in a vertical direction, and the laser cutting gun 422 is on the same axis as the third rotating shaft 415. At this time, the laser cutting gun 422 is also arranged in a vertical direction. According to the inclination angle of the inclined hole, the first rotating shaft 402 drives the first guide rail 403 to deflect, so that the laser cutting gun 422 is arranged obliquely with the metal plate. The inclination angle is the same as the inclination angle of the inclined hole. The first screw rod 418 is driven to rotate to drive the second sliding block 419 to move, thereby adjusting the distance between the axis of the laser cutting gun 422 and the axis of the third rotating shaft 415. This distance is the radius distance of the inclined hole. The first bidirectional screw 405 is driven to move the two first sliding blocks 406 towards each other, thereby adjusting the two fixed frames 407 to move towards each other, so that the upper and lower laser cutting guns 422 move towards the metal plate. When the two fixed frames 407 move towards each other, the shaft sleeve 412 moves along the transmission shaft 413. The transmission shaft 413 is driven to rotate to drive the third bevel gear 411 to rotate, and then the first bevel gear 409, the second rotating shaft 408, the second bevel gear 410 and the fourth bevel gear 414 are driven to rotate, thereby driving the second guide rail 416 to rotate. The second guide rail 416 drives the laser cutting gun 422 to rotate around the third rotating shaft 415. The laser cutting gun 422 cuts a round hole on the metal plate. At this time, the round hole is a slant hole on the metal plate.

[0052] In order to avoid local overheating of the metal plate, the two laser cutting guns 422 are arranged staggered, that is, the connection between the two laser cutting guns 422 coincides with the center of the inclined hole, and the two laser cutting guns 422 rotate in the same direction to cut the metal plate.

[0053] The two ends of the telescopic rod 420 are fixedly connected with the stop blocks 423, the diameter of the stop blocks 423 is greater than the diameter of the telescopic rod 420, and the two ends of the spring 421 are fixedly connected with the stop blocks 423. One of the stop blocks 423 is fixedly connected with the second sliding block 419, and the other stop block 423 is fixedly connected with the laser cutting gun 422. Because the laser cutting gun 422 is arranged obliquely, when the laser cutting gun 422 rotates around the center of the inclined hole, the telescopic rod 420 cooperates with the spring 421 to make the laser cutting gun 422 always adhere to the surface of the metal plate, so as to avoid the cutting temperature being reduced due to the laser cutting gun 422 being away from the surface of the metal plate.

[0054] The fixed rod 424 is arranged on the side of the laser cutting gun 422, one end of the fixed rod 424 is fixedly connected with the stop block 423, and the other end of the fixed rod 424 is fixedly connected with the stop ring 425. Under the elastic force of the spring 421, the stop ring 425 is always in contact with the surface of the metal plate, so that friction between the gun head of the laser cutting gun 422 and the surface of the metal plate is avoided, and the laser cutting gun 422 is protected.

[0055] In order to drive the first rotating shaft 402 to rotate, the first motor 426 is fixedly connected to the fixed frame 401, and the output end of the first motor 426 is fixedly connected with the first rotating shaft 402.

[0056] In order to drive the first bidirectional screw 405 and the transmission shaft 413 to rotate, the second motor 427 and the third motor 428 are fixedly connected to the end of the fixed frame 407, the output end of the second motor 427 is fixedly connected with the first bidirectional screw 405, and the output end of the third motor 428 is fixedly connected with the transmission shaft 413.

[0057] In order to make the shaft sleeve 412 and the sliding rod 430 relatively slide, and at the same time, the shaft sleeve 412 can rotate with the sliding rod 430, the third sliding groove 429 is arranged on the inner side of the shaft sleeve 412, and the sliding rod 430 is fixedly connected to the side of the transmission shaft 413 and slidably connected in the third sliding groove 429.

[0058] In order to drive the first screw rod 418 to rotate, the fourth motor 431 is fixedly connected to the end of the second guide rail 416, and the output end of the fourth motor 431 is fixedly connected with the first screw rod 418.

[0059] The fixing mechanism 200 comprises two fixed plates 201 fixedly connected to the two sides of the workbench 100, a second bidirectional screw 202 rotatably connected between the two fixed plates 201, two movable plates 203 threadedly connected to threads of the second bidirectional screw 202 in different directions, a clamping frame 204 fixedly connected to the upper end of the movable plate 203, a second screw rod 205 threadedly connected to the upper end of the clamping frame 204, a clamping block 206 fixedly connected to the lower end of the second screw rod 205, and a rotating piece 207 fixedly connected to the upper end of the second screw rod 205; according to the width of the metal plate, the second bidirectional screw 202 is driven to rotate, the distance between the two movable plates 203 is adjusted, and then the distance between the two clamping frames 204 is adjusted, so that the two ends of the metal plate are placed in the clamping frames 204, and the clamping block 206 is clamped to the metal plate by rotating the second screw rod 205, so that the metal plate is fixed.

[0060] In order to drive the second bidirectional screw 202 to rotate, one of the fixed plates 201 is fixedly connected with a fifth motor 208, and the output end of the fifth motor 208 is fixedly connected with the second bidirectional screw 202.

[0061] In order to improve the stability of the moving plate 203, the second bidirectional screw rod 202 is provided with guide rods 209 parallel to the second bidirectional screw rod 202 on both sides, the guide rods 209 are in sliding connection with the moving plate 203, and both ends of the guide rods 209 are in fixed connection with the fixed plate 201.

[0062] The three-axis adjusting mechanism 300 comprises a table arm 301 fixedly connected to the workbench 100, a first electric sliding rail 302 fixedly connected to the table arm 301, a third sliding block 303 in sliding connection with the first electric sliding rail 302, a second electric sliding rail 304 fixedly connected to the third sliding block 303, a fourth sliding block 305 in sliding connection with the second electric sliding rail 304, a third electric sliding rail 306 fixedly connected to the fourth sliding block 305, a fifth sliding block 307 in sliding connection with the third electric sliding rail 306, and an extension arm 308 fixedly connected to the fifth sliding block 307 and fixedly connected to the fixed frame 401 at the other end. The first electric sliding rail 302, the second electric sliding rail 304 and the third electric sliding rail 306 are cooperatively arranged to drive the extension arm 308 to adjust the position of the cutting mechanism 400 in the three-dimensional space, so as to cut different parts of the metal plate.

[0063] A method for using a laser cutting device for inclined holes, comprising the following steps:

[0064] Fixing: according to the width of the metal plate, the second bidirectional screw rod 202 is driven to rotate, the distance between the two moving plates 203 is adjusted, and the distance between the two clamping frames 204 is adjusted, the two ends of the metal plate are placed in the clamping frame 204, the clamping block 206 is clamped to fix the metal plate by rotating the second screw rod 205;

[0065] Adjusting: the first electric sliding rail 302, the second electric sliding rail 304 and the third electric sliding rail 306 are cooperatively arranged to drive the extension arm 308 to adjust the position of the laser cutting gun 422 in the three-dimensional space, so as to cut different parts of the metal plate;

[0066] Cutting: according to the inclination angle of the inclined hole, the first rotating shaft 402 drives the first guide rail 403 to deflect, so that the laser cutting gun 422 is arranged obliquely with the metal plate, and the inclination angle is the same as the inclination angle of the inclined hole. The first screw rod 418 is driven to rotate to drive the second sliding block 419 to move, thereby adjusting the distance between the axis of the laser cutting gun 422 and the axis of the third rotating shaft 415. The distance is the radius distance of the inclined hole. The first bidirectional screw 405 is driven to move the two first sliding blocks 406 towards each other, thereby adjusting the two fixed frames 407 to move towards each other, so that the upper and lower laser cutting guns 422 move towards the metal plate. When the two fixed frames 407 move towards each other, the shaft sleeve 412 moves along the transmission shaft 413. The transmission shaft 413 is driven to rotate to drive the third bevel gear 411 to rotate, and then the first bevel gear 409, the second rotating shaft 408, the second bevel gear 410 and the fourth bevel gear 414 are driven to rotate. The second guide rail 416 drives the laser cutting gun 422 to rotate around the third rotating shaft 415, and the laser cutting gun 422 cuts the inclined hole on the metal plate.

[0067] Example two

[0068] As Figures 10 to 11 shown, a kind of inclined hole laser cutting device, compared with example one, cooling mechanism 500 is increased, cooling mechanism 500 includes water tank 101 fixedly connected on workbench 100, the upper end of water tank 101 is fixedly connected with water pump 102, the water inlet of water pump 102 is communicated with the water outlet of water tank 101, the water outlet of water pump 102 is fixedly communicated with water pipe 103, the water outlet of water pipe 103 is fixedly communicated with spray head 104, spray head 104 is provided with two, wherein, the first screw rod 418 in example one is replaced by third bidirectional screw 505, the threads of different rotation on third bidirectional screw 505 are all threadedly connected with second sliding block 419, one of second sliding block 419 is fixedly connected with telescopic rod 420 and laser cutting gun 422, the other second sliding block 419 is fixedly connected with spray head 104, when second guide rail 416 rotates, second guide rail 416 drives laser cutting gun 422 and spray head 104 to rotate around third rotating shaft 415, and laser cutting gun 422 cuts round hole on metal plate, simultaneously, spray head 104 sprays cooling liquid to cool the cutting path, reduces the deformation of plate caused by local temperature being too high when laser cutting. Wherein, when cutting round hole, second guide rail 416 only needs to rotate a circle, therefore, water pipe 103 uses hose, which can overcome torsion force in the case of rotating a circle.

[0069] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate way in one or more embodiments or examples.

[0070] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A laser cutting device for inclined holes, comprising a workbench (100), characterized in that: The workbench (100) is provided with a fixing mechanism (200) and a three-axis adjustment mechanism (300), and the three-axis adjustment mechanism (300) is provided with a cutting mechanism (400); The cutting mechanism (400) comprises a fixing frame (401) fixedly connected to the three-axis adjustment mechanism (300), the fixing frame (401) is rotatably connected to a first rotating shaft (402), the first rotating shaft (402) is fixedly connected to a first guide rail (403), the first guide rail (403) is provided with a first sliding groove (404), a first bidirectional lead screw (405) is rotatably connected in the first sliding groove (404), and the first bidirectional lead screw (405) is threadedly connected to two threads of different rotation directions. A first slider (406) slides in a first slide groove (404), a fixed frame (407) is fixedly connected to the first slider (406), a second rotating shaft (408) is rotatably connected in the fixed frame (407), a first bevel gear (409) and a second bevel gear (410) are fixedly connected at both ends of the second rotating shaft (408), a third bevel gear (411) is meshed with a circumferential side of the first bevel gear (409), a shaft sleeve (412) is fixedly connected to the third bevel gear (411), and the shaft sleeve (412) is rotatably connected to the fixed frame (407), a transmission shaft (413) is rotatably connected between the two ends of the first guide rail (403), and the two shaft sleeves (412) are slidably connected to the transmission shaft (413), the circumferential side of the second bevel gear (410) is meshed with a fourth bevel gear (414), and the fourth bevel gear (414) is fixedly connected to a third rotating shaft (415), the third rotating shaft (415) is rotatably connected to the fixed frame (407), and the third rotating shaft (415) is fixedly connected to the third rotating shaft (415). Two guide rails (416), a second slide groove (417) is provided on the second guide rail (416), a first screw rod (418) is rotatably connected in the second slide groove (417), a second slider (419) is threadedly connected to the first screw rod (418) and slides in the second slide groove (417), a telescopic rod (420) is fixedly connected to the second slider (419), a spring (421) is sleeved on the circumference of the telescopic rod (420), and a laser cutting gun (422) is fixedly connected to the telescopic rod (420); The fixing mechanism (200) includes a fixing plate (201) fixedly connected to both sides of the workbench (100), a second bidirectional screw (202) is rotatably connected between the two fixing plates (201), two threads of different rotation directions of the second bidirectional screw (202) are both threadedly connected to a movable plate (203), the upper end of the movable plate (203) is fixedly connected to a clamping frame (204), the upper end of the clamping frame (204) is threadedly connected to a second screw (205), the lower end of the second screw (205) is fixedly connected to a clamping block (206), and the upper end of the second screw (205) is fixedly connected to a rotating member (207); A fifth motor (208) is fixedly connected to one of the fixed plates (201), and an output end of the fifth motor (208) is fixedly connected to the second bidirectional lead screw (202); Guide rods (209) parallel to the second bidirectional lead screw (202) are provided on both sides of the second bidirectional lead screw (202), the guide rods (209) are slidably connected to the movable plate (203), and both ends of the guide rods (209) are fixedly connected to the fixed plate (201); The three-axis adjustment mechanism (300) comprises a table arm (301) fixedly connected to the workbench (100), a first electric slide rail (302) fixedly connected to the table arm (301), a third slider (303) slidably connected to the first electric slide rail (302), a second electric slide rail (304) fixedly connected to the third slider (303), a fourth slider (305) slidably connected to the second electric slide rail (304), a third electric slide rail (306) fixedly connected to the fourth slider (305), a fifth slider (307) slidably connected to the third electric slide rail (306), an extension arm (308) fixedly connected to the fifth slider (307), and the other end of the extension arm (308) fixedly connected to the fixed frame (401).

2. The inclined hole laser cutting device according to claim 1, characterized in that: Both ends of the telescopic rod (420) are fixedly connected with blocks (423), the diameter of the block (423) is larger than the diameter of the telescopic rod (420), and both ends of the spring (421) are fixedly connected to the blocks (423), one of the blocks (423) is fixedly connected to the second slider (419), and the other block (423) is fixedly connected to the laser cutting gun (422).

3. The inclined hole laser cutting device according to claim 2, characterized in that: A fixing rod (424) is distributed around the laser cutting gun (422), one end of the fixing rod (424) is fixedly connected to the stopper (423), and the other end of the fixing rod (424) is fixedly connected to a stop ring (425).

4. The inclined hole laser cutting device according to claim 3, characterized in that: A first motor (426) is fixedly connected to the fixing frame (401), and an output end of the first motor (426) is fixedly connected to the first rotating shaft (402).

5. The inclined hole laser cutting device according to claim 4, characterized in that: The end of the fixed frame (407) is fixedly connected to a second motor (427) and a third motor (428), the output end of the second motor (427) is fixedly connected to the first bidirectional screw (405), and the output end of the third motor (428) is fixedly connected to the transmission shaft (413).

6. The inclined hole laser cutting device according to claim 5, characterized in that: A third sliding groove (429) is provided on the inner side of the shaft sleeve (412), and a sliding rod (430) is fixedly connected to the peripheral side of the transmission shaft (413), and the sliding rod (430) is slidably connected in the third sliding groove (429).

7. The inclined hole laser cutting device according to claim 6, characterized in that: The end of the second guide rail (416) is fixedly connected to a fourth motor (431), and the output end of the fourth motor (431) is fixedly connected to the first screw rod (418).

8. A method for using an inclined hole laser cutting device, using the inclined hole laser cutting device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Fixing: According to the width of the metal plate, the second bidirectional screw (202) is driven to rotate, the distance between the two movable plates (203) is adjusted, and then the distance between the two clamping frames (204) is adjusted, the two ends of the metal plate are placed in the clamping frames (204), and the clamping block (206) is clamped to fix the metal plate by rotating the second screw (205); Adjustment: By coordinating the first electric slide rail (302), the second electric slide rail (304) and the third electric slide rail (306), the extension arm (308) is driven to drive the laser cutting gun (422) to adjust its position in a three-dimensional space, so as to facilitate cutting work on different parts of the metal plate; Cutting: According to the inclination angle of the inclined hole, the first rotating shaft (402) is driven to drive the first guide rail (403) to deflect, so that the laser cutting gun (422) is tilted with the metal plate, and the inclination angle is the same as the inclination angle of the inclined hole. The first screw rod (418) is driven to rotate to drive the second slider (419) to move, thereby adjusting the distance between the axis of the laser cutting gun (422) and the axis of the third rotating shaft (415), which is the radius of the inclined hole. The first bidirectional screw rod (405) is driven to drive the two first sliders (406) to move toward each other, thereby adjusting the two fixed frames (407) to move toward each other, so that the upper and lower laser cutting guns (422) are tilted. The laser cutting gun (422) approaches the metal plate, wherein, when the two fixed frames (407) move toward each other, the shaft sleeve (412) moves along the transmission shaft (413), and the third bevel gear (411) is driven to rotate by the driving transmission shaft (413), and then the second guide rail (416) is driven to rotate by the first bevel gear (409), the second rotating shaft (408), the second bevel gear (410), the fourth bevel gear (414) and the third rotating shaft (415). The second guide rail (416) drives the laser cutting gun (422) to rotate around the third rotating shaft (415), and the laser cutting gun (422) cuts an inclined hole on the metal plate.

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