CN114905164A - A laser processing device and processing method thereof - Google Patents

Abstract

The invention relates to the technical field of laser processing, and discloses a laser processing device and a processing method thereof.A clamp platform comprises a clamp plate for fixing a clamp and a position driving assembly for driving the clamp plate to change a processing position, wherein the clamp plate is arranged at the upper end of the position driving assembly; the laser cutting device comprises a light path component, a cutter and a cutter, wherein the light path component comprises a laser lifting support, a laser generating component and an air knife, the laser generating component is arranged on the laser lifting support, the laser generating component comprises a laser generator, a vibrating mirror and a laser controller, and the laser controller controls the vibrating mirror to rotate so as to move and cut laser along the extending direction of a processing port; the air supply compression assembly is communicated with the air inlet; and the system controller is in communication connection with the position driving assembly, the laser controller and the air supply compression assembly respectively. The laser processing device and the processing method thereof improve the processing efficiency.

Description

A laser processing device and processing method thereof

technical field

The present invention relates to the technical field of laser processing, in particular to a laser processing device and a processing method thereof.

Background technique

At present, hard brittle materials are characterized by high hardness and brittleness, and the elastic limit and strength of the materials are very close. When processing hard and brittle materials, the surface is prone to cracks and breakage. The traditional processing technology is inefficient and difficult to process. With the rapid development of laser technology today, the application of laser processing has gradually highlighted its advantages in the process of processing hard and brittle materials. The traditional processing method is to process the workpiece through the motion of the laser cutting head driven by a servo motor, which ensures the processing accuracy and processing. While improving the quality, the motion efficiency of the servo drive also has a higher room for improvement in the processing efficiency.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a laser processing device and a processing method thereof, so as to improve the laser processing precision and processing speed.

In order to achieve the above object, the present invention provides a laser processing device and a fixture platform, the fixture platform includes a fixture plate for fixing a fixture and a position driving component for driving the fixture plate to change the processing position, the fixture plate Install the upper end of the drive assembly with the position;

an optical path assembly, the optical path assembly includes a laser lifting bracket, a laser generating assembly and an air knife, the laser generating assembly is mounted on the laser lifting bracket, the laser generating assembly includes a laser generator, a galvanometer and a laser controller, the The laser controller is connected in communication with the laser generator, and the laser controller is drivingly connected with the galvanometer. The upper end of the air knife is provided with a light inlet, and the air knife is provided with a slow air cavity. An air inlet is opened on the outside of the air knife, and the air inlet is communicated with the slow air cavity. The lower end of the air knife is provided with a long processing port, and the processing port is arranged towards the fixture plate, so The light inlet, the slow air cavity and the processing port are connected to form a laser emission channel, the light inlet is communicated with the light outlet of the galvanometer, and the laser controller controls the laser generator to face the galvanometer. The laser is emitted, the laser reflected by the galvanometer is emitted through the laser emission channel, and the laser controller controls the rotation of the galvanometer to move and cut the laser along the extension direction of the processing port;

an air supply compression assembly, the air supply compression assembly being communicated with the air inlet;

a system controller, which is respectively connected in communication with the position driving assembly, the laser controller and the air supply compression assembly.

As a preferred solution, the position driving assembly includes a left and right moving assembly and a front and rear moving assembly that are placed in a horizontal direction, the clamp plate is slidably installed on the top of the front and rear moving assembly, and the front and rear moving assembly drives the clamp plate back and forth. To move, the front and rear moving components are slidably mounted on the left and right moving components, and the left and right moving components drive the front and rear moving components to slide left and right.

As a preferred solution, the position driving assembly includes a lifting part and a rotating part, the rotating part is drivingly connected with the left-right moving assembly, and the lifting part is drivingly connected with the rotating part.

As a preferred solution, the ratio of the length of the processing port to the width of the processing port is set at 45-60.

As a preferred solution, the galvanometer is a single-axis scanning galvanometer, and the single-axis scanning galvanometer includes a fine-tuning mirror, a single-axis scanning mirror, and an adjusting screw, the adjusting screw is slidably connected to the fine-tuning mirror, and the fine-tuning mirror is slidably connected. A single-axis scanning mirror is located on one side of the fine-tuning mirror.

As a preferred solution, an angle scale ring is fixed at the connection between the galvanometer and the air knife, the initial scale of the angle scale ring is aligned with the initial position of the fine-tuning mirror, and the angle scale ring is sleeved on the air knife The outer circumference of the air knife rotates relative to the angle scale ring.

A processing method of a laser processing device, the laser processing device performs laser cutting processing on a workpiece, the laser cutting processing includes linear cutting processing, and the linear cutting processing includes the following steps:

The system controller obtains the processing and cutting path of the workpiece, the processing and cutting path includes N linear processing paths, N≥1;

The red light indicator in the laser processing device is used to debug the laser light path. The red light is reflected from the galvanometer and emitted from the processing port. The laser controller controls the rotation of the reflecting mirror in the galvanometer. A laser cutting path is formed by moving the rotating mirror plate in the processing port, the laser cutting path is the same as the extending direction of the processing port, and the laser cutting path is located in the processing port;

The workpiece is placed on the jig board, and the system controller controls the position driving component according to the processing and cutting path to drive the jig board to move, so that the first linear processing path of the workpiece overlaps the direction of the laser cutting path, The laser controller controls the laser generator to emit laser and drives the reflective lens to rotate, and the laser cuts along the laser cutting path to complete the first linear cutting process;

If N=1, the linear cutting process of the workpiece is completed. If N>1, the system controller controls the position driving component according to the processing and cutting path to drive the fixture plate to move, so that the next linear processing path of the workpiece is connected to the laser beam. The cutting paths overlap. The laser controller controls the laser generator to emit laser light and drives the mirror to rotate. The laser cuts along the laser cutting path to complete the next linear cutting process. Repeat this step until all linear cutting processes of the workpiece are completed. .

As a preferred solution, the laser processing device includes an image recognition device for processing information of the workpiece on the fixture board, and the image recognition device is connected in communication with the system controller;

The recognition range of the image recognition device is located under the corresponding air knife, and when the workpiece on the fixture plate moves to the recognition range, the image recognition device sends the recognition signal to the system controller, and the system The controller controls the position drive assembly to stop transmission;

The manual operating system controller controls the position driving component to adjust the workpiece to the processing position, obtains the image processing path of the workpiece, and marks the processing starting point on the image processing path.

As a preferred solution, the image recognition device is a coaxial camera.

As a preferred solution, the model processing path of the workpiece is formed in the system controller, and the model processing path is matched with the image processing path through the system controller to form a processing path, and the system controller is based on the image processing path. Calibration of the initial point of processing.

Compared with the prior art, a laser processing device and a processing method thereof according to an embodiment of the present invention have the beneficial effect that the system controller is respectively connected in communication with the position driving component, the laser controller and the air supply compressing component. The system controller drives the fixture plate to move through the position drive assembly to adjust the processing position of the workpiece. The system controller controls the air supply to the air knife through the air supply compression assembly. The system controller controls the laser switch, angle adjustment and mobile processing through the laser controller. The fixture platform is used to hold the workpiece and move the workpiece to the machining position. The workpiece is placed on the fixture plate for fixing, and the fixture plate is driven by the position driving component to change the processing position, including at least forward and backward movement and left and right movement. The optical path component is mainly responsible for laser processing. Among them, the laser lifting bracket is used to support the laser generator assembly and the air knife. When the laser generator assembly and the air knife respectively maintain a certain processing distance from the fixture plate, at the same time, the height of the laser generator assembly and the air knife in the vertical direction is adjusted to adjust the laser focal length. The laser controller is used to control the laser generator to emit laser light. The galvanometer is used to reflect the laser to the processing port of the air knife, and by rotating the galvanometer to adjust the output position and linear movement range of the laser, the laser is emitted to the galvanometer, and the laser is reflected to the processing port of the air knife through the galvanometer. Rotate the galvanometer and adjust the laser reflection angle to ensure that the laser is emitted from the processing port, and the linear movement path of the laser is consistent with the extension direction of the processing port. The laser controller controls the rotation of the galvanometer, so that the laser reflected by the galvanometer moves according to the set linear processing path. When the laser moves and cuts in a straight line, the fixture platform locks the position of the workpiece. Through the galvanometer, air knife and fixture platform The air knife edge provides the processing range for the laser, and uses the moving accuracy and speed of the galvanometer to improve the overall laser linear cutting processing efficiency. The air supply compression assembly is communicated with the buffer cavity through the air inlet, and the air supply compression assembly fills the buffer cavity with gas, and both the gas and the laser are ejected from the processing port, so that the laser processing position is located within the range of the gas blowing, and the air knife dust removal efficiency is improved. Accuracy, improve dust removal effect.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of an optical path assembly according to an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a position driving assembly according to an embodiment of the present invention.

4 is a schematic structural diagram of an air knife according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of the internal structure of the air knife according to the embodiment of the present invention.

FIG. 6 is a schematic structural diagram of an air knife processing port according to an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a propagation path of an optical path in a galvanometer according to an embodiment of the present invention.

8 is a schematic structural diagram of an adjusting screw according to an embodiment of the present invention.

In the picture:

10. Fixture platform; 11. Fixture plate; 12. Position drive assembly; 13. Left and right moving assembly; 14. Front and rear moving assembly; 15. Lifting part; 16. Rotating part;

20. Optical path components; 21. Laser lifting bracket;

30. Laser generating components; 31. Laser generator; 32. System control card;

40, air knife; 41, light inlet; 42, slow air cavity; 43, air inlet; 44, processing port; 45, angle scale ring; 46, dust-proof light-transmitting mirror; 47, snap-on boss; 48 , sealing ring; 49, snap ring;

50. Galvanometer; 51. Fine-tuning mirror; 52. Single-axis scanning lens; 53. Adjusting screw;

60. Laser controller; 61. Image recognition device; 62. Computer host; 63. Display.

Detailed ways

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and other terms used in the present invention should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be a mechanical connection or a welded connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between the two elements, unless otherwise expressly defined . For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in FIGS. 1 to 8 , a laser processing device according to a preferred embodiment of the present invention, a fixture platform 10 , the fixture platform 10 includes a fixture plate 11 for fixing the fixture and a fixture plate 11 for driving the fixture plate 11 to change the processing position. The position drive assembly 12, the clamp plate 11 is installed on the upper end of the position drive assembly 12;

The optical path assembly 20, the optical path assembly 20 includes a laser lifting bracket 21, a laser generating assembly 30 and an air knife 40, the laser generating assembly 30 is mounted on the laser lifting bracket 21, and the laser generating assembly 30 includes a laser generator 31, a galvanometer 50 and a laser controller 60 , the laser controller 60 is connected in communication with the laser generator 31, the laser controller 60 is driven and connected with the galvanometer 50, the upper end of the air knife 40 is provided with a light inlet 41, the air knife 40 is provided with a slow air cavity 42, and the air knife 40 An air inlet 43 is opened on the outer side of the air knife, and the air inlet 43 is communicated with the slow air cavity 42. The lower end of the air knife 40 is provided with a long processing port 44. The processing port 44 is arranged towards the fixture plate 11. The air cavity 42 is communicated with the processing port 44 to form a laser emission channel, the light inlet 41 is communicated with the light outlet of the galvanometer 50, the laser controller 60 controls the laser generator 31 to emit laser light toward the galvanometer 50, and the galvanometer 50 reflects the laser and emits through the laser When the channel is ejected, the laser controller 60 controls the rotation of the galvanometer 50 to move and cut the laser along the extending direction of the processing port 44;

air supply compression assembly, the air supply compression assembly is communicated with the air inlet 43;

The system control card 32 is respectively connected to the position driving assembly 12 , the laser controller 60 and the air supply compression assembly in communication with the system control card 32 .

In the laser processing device of the present invention, the system control card 32 is respectively connected to the position driving assembly 12, the laser controller 60 and the air supply compression assembly. The system control card 32 drives the fixture plate 11 to move through the position driving assembly 12 to adjust the processing position of the workpiece. The system control card 32 controls the air supply to the air knife 40 through the air supply compression assembly. The system control card 32 controls the laser switch, angle adjustment and mobile processing through the laser controller 60 . The fixture platform 10 is used to fix the workpiece and move the workpiece to the processing position. The workpiece is placed on the fixture plate 11 for fixing, and the fixture plate 11 is driven by the position driving component 12 to change the processing position, which at least includes forward and backward movement and left and right movement. The optical path assembly 20 is mainly responsible for laser processing. The laser lifting bracket 21 is used to support the laser generating assembly 30 and the air knife 40. When the laser generating assembly 30 and the air knife 40 respectively maintain a certain processing distance from the fixture plate 11, at the same time, adjust the vertical direction of the laser generating assembly 30 and the air knife 40. height to adjust the laser focus. The laser controller 60 controls the laser generator 31 to emit laser light. The galvanometer 50 is used to reflect the laser light to the processing port 44 of the air knife 40, and by rotating the galvanometer 50 to adjust the output position of the laser and the linear movement range in the processing port 44, the laser is emitted to the galvanometer 50, and passes through the galvanometer 50. The laser is reflected to the processing port 44 of the air knife 40 , and the galvanometer 50 is rotated to adjust the laser reflection angle to ensure that the laser is emitted from the processing port 44 , and the linear movement path of the laser is consistent with the extending direction of the processing port 44 . The laser controller 60 controls the rotation of the galvanometer 50 to make the laser reflected by the galvanometer 50 move according to the set linear processing path. When the laser moves linearly and cuts, the fixture platform 10 locks the position of the workpiece, and the galvanometer 50, The air knife 40 is used in conjunction with the fixture platform 10. The air knife 40 provides a processing range for the laser, and the movement accuracy and speed of the galvanometer 50 are used to improve the overall laser linear cutting processing efficiency. The air supply compression assembly communicates with the buffer cavity through the air inlet 43, and the air supply compression assembly fills the buffer cavity with gas, and both the gas and the laser are ejected from the processing port 44, so that the laser processing position is located within the range where the gas is blown out, and the air knife is lifted. 40 dust removal accuracy, improve the dust removal effect. Among them, the laser processing device of the present invention significantly improves the processing efficiency of hard and brittle materials. The characteristics of hard and brittle materials are high hardness and high brittleness, and the elastic limit and strength of the materials are very close. When processing hard and brittle materials, the surface is prone to cracks and breakage. The traditional processing technology is inefficient and difficult to process. When the laser starts processing, all the transmission mechanisms of the fixture platform 10 do not operate, and the laser processing is performed by the high-speed scanning of the galvanometer 50, with high precision and extremely fast speed, which reduces the formation probability of cracks and breakage of hard and brittle materials, and effectively improves the hardness Processing yield of brittle materials. During the processing, the precision and speed of the galvanometer 50 are used to replace the motion of the servo motor to improve the overall processing efficiency. At the same time, the slag removing air knife in the laser processing system and method of the present invention cooperates with the laser cutting path of the single-axis galvanometer to clean and cut. Dust, improve product processing quality, and protect the laser cutting optical path and device.

Preferably, the clamp plate 11 is disposed toward the lower end of the air knife 40 , and the clamp plate 11 is disposed correspondingly below the air knife 40 to shorten the moving distance of the clamp plate 11 and improve production efficiency.

The gas blown into the buffer chamber by the air supply compression assembly is generally air, and the gas blown into the air supply compression device according to the process requirements is argon, nitrogen, etc.

More specifically, the laser processing device includes a computer host 62 and a display 63 , and the system control card 32 and the display 63 are respectively connected to the computer host 62 for communication.

As one embodiment, the galvanometer 50 is a single-axis galvanometer, a dual-axis galvanometer, or a multi-axis galvanometer. Preferably, the galvanometer 50 is a single-axis galvanometer, which meets the usage requirements and improves the adjustment efficiency.

Further, the position driving assembly 12 includes a left and right moving assembly 13 and a front and rear moving assembly 14 that are placed in the horizontal direction. The clamp plate 11 is slidably mounted on the top of the front and rear moving assembly 14, and the front and rear moving assembly 14 drives the clamp plate 11 to move forward and backward The assembly 14 is slidably installed on the left and right moving assembly 13, the left and right moving assembly 13 drives the front and rear moving assembly 14 to slide left and right, and the left and right moving assembly 13 and the front and rear moving assembly 14 drive the workpiece to move back and forth, left and right through the fixture plate 11, and adjust the processing position of the workpiece. Specifically, the left and right moving components 13 and the forward and backward moving components 14 are connected in communication with the system control card 32 . The system control card 32 sends a movement number to the left and right movement components 13 and the front and rear movement components 14, and controls the left and right movement components 13 to drive or the front and rear movement components 14 to drive.

More specifically, the left and right moving components 13 and the front and rear moving components 14 are both telescopic cylinders, and the telescopic ends of the telescopic cylinders are used to drive left and right movement or front and rear movement. Alternatively, the left and right moving components 13 and the front and rear moving components 14 are both connected to the screw through the transmission end of the servo motor, the screw is sleeved with a nut, the servo motor drives the screw to rotate, and the nut moves relative to the screw, thereby realizing left and right movement or forward and backward movement, and the servo motor drives High precision, improve machining accuracy.

Further, the position driving assembly 12 includes a lifting portion 15 and a rotating portion 16 . The rotating portion 16 is drivingly connected with the left-right moving assembly 13 , and the lifting portion 15 is drivingly connected with the rotating portion 16 . The rotating part 16 drives the left and right moving components 13 to rotate, and the left and right moving components 13 drive the front and rear moving components 14 and the fixture plate 11 to rotate, thereby realizing the adjustment of the processing angle of the workpiece. It is necessary to overlap the laser cutting path and the linear processing path during the processing. Through the combined use of the rotating part 16, the left and right moving components 13 and the front and rear moving components 14, the overlapping setting of the laser cutting path and the linear processing path is improved. Adjust efficiency. The lifting part 15 drives the rotating part 16 , the left and right moving components 13 , the front and rear moving components 14 and the fixture plate 11 to lift and lower, and adjust the distance between the workpiece and the air knife 40 . Although the laser lifting bracket 21 can also adjust the distance between the workpiece and the air knife 40 bracket, since the position of the lifting part 15 is relatively bottom, it is more convenient to fine-tune the height of the fixture plate 11, which improves the adjustment efficiency and reduces the difficulty of operation. Wherein, the lifting part 15 is a telescopic cylinder or a screw driven by a motor, and a nut is set on the screw to realize lifting and lowering.

Further, the ratio of the length of the processing port 44 to the width of the processing port 44 is set at 45-60. The processing port 44 is set in a suitable range, which effectively reduces the wind resistance of the processing port 44, reduces the energy consumption on the premise of ensuring the air outlet rate of the processing port 44, and increases the moving range of the laser in the processing port 44, which improves the processing efficiency and processing application range.

Preferably, the ratio of the length of the processing port 44 to the width of the processing port 44 is set at 52-55. As one example, the width of the processing port 44 is set at 1.5 mm. Preferably, the length of the processing port 44 is set at 75-85 mm.

The upper end of the air knife 40 is cylindrical, and the diameter of the light inlet 41 corresponds to the length of the machining port 44 , so that within the size of the light inlet 41 , the machining port 44 can provide a larger processing range for the laser.

As one of the preferred embodiments, the shape of the upper end of the buffer cavity matches the cylindrical shape of the upper end of the air knife 40 , the shape of the lower end of the buffer cavity matches the shape of the processing port 44 , and the buffer cavity forms a transition from the cylindrical shape of the upper end to The elongated shape of the lower end enables the gas to gradually form extrusion in the process of flowing toward the processing port 44 after the cylindrical part is buffered, so as to improve the stability and the rate of gas outflow.

As one embodiment, the processing port 44 is rectangular, the axis of the air inlet 43 passes through the center point of the processing port 44 , and the air inlet 43 is installed coaxially with the buffer cavity.

Further, a dust-proof light-transmitting mirror 46 is installed between the air inlet 43 and the buffer cavity, and the dust-proof light-transmitting mirror 46 is located above the air inlet 43 . The dust-proof light-transmitting mirror 46 is a flat glass sheet, and the laser light enters the buffer cavity after passing through the dust-proof light-transmitting mirror 46. The dust-proof light-transmitting mirror 46 is used to ensure that the structure of the air knife 40 completely seals and isolates the front end optics from the beam processing area. The slag will not flow back and pollute the internal optical structure of the equipment, thereby prolonging the service life of the laser generator 31 . Since the dust-proof light-transmitting mirror 46 is located above the air inlet, the main body can be smoothly ventilated.

More specifically, the inner wall above the buffer cavity protrudes in the radial direction to form a snap-on boss 47, the snap-on boss 47 is located above the air inlet 43, the dust-proof light-transmitting mirror 46 is placed on the snap-on boss 47, The inner wall of the air inlet 43 is provided with a snap ring 49, through which the light-transmitting mirror is pressed and clamped to the boss 47, and the outer wall of the snap ring 49 is installed against the inner wall of the air inlet 43 to prevent dust-proof light-transmitting mirror. 46 drops. More preferably, a sealing ring 48 is provided between the dust-proof light-transmitting mirror 46 and the snap ring 49, and the sealing ring 48 and the dust-proof light-transmitting mirror 46 are clamped by the snap ring 49 to improve the sealing degree of the light inlet 41, Avoid fine dust from entering the laser generator 31 .

Further, as shown in FIGS. 6-7 , the galvanometer 50 is a single-axis scanning galvanometer 50 , and the single-axis scanning galvanometer 50 includes a fine-tuning mirror 51 , a single-axis scanning mirror 52 and an adjustment screw 53 , and the adjustment screw 53 and the fine-tuning mirror 53 . The mirror 51 is slidably connected, and the single-axis scanning mirror 52 is located on one side of the fine-tuning mirror 51 . The galvanometer 50 is a single-axis scanning galvanometer 50 , which has a simple structure and arrangement, and reduces the production cost. By rotating the adjusting screw 53 to adjust the width position of the laser beam exiting through the fine-tuning mirror 51 at the processing port 44, that is, the position in the Y-axis direction in FIG. The scanning mirror is reflected from the light inlet 41 into the buffer cavity, and then exits from the processing port 44 . The laser cutting path formed by the oscillation of the laser light by rotating the fine adjustment mirror 51 is the same as the extending direction of the processing port 44 . The arrows in FIG. 7 represent the propagation path of the laser beam. The laser beam must be precisely swung along the X-axis at the processing port 44 of the air knife 40 to cut the workpiece. The adjustment screw 53 in the scanning lens 52 precisely adjusts the positioning of the laser beam in the Y-axis direction in the processing port 44 .

Further, an angle scale ring 45 is fixed at the connection between the galvanometer 50 and the air knife 40, the initial scale of the angle scale ring 45 is aligned with the initial position of the fine-tuning mirror 51, and the angle scale ring 45 is sleeved on the outer circumference of the air knife 40, and the wind The knife 40 rotates relative to the angle scale ring 45 . The air knife 40 rotates along the axis of the light inlet 41, and the extension direction of the processing port 44 of the air knife 40 is adjusted according to the angle scale of the air knife 40 to coincide with the direction of the laser cutting path formed by the guiding light emitted by the galvanometer 50, and the guiding light is adjusted. The fine-tuning mirror 51 on the galvanometer 50 has no scale, but only a marking line or arrow, and the scale of the angle scale ring 45 on the air knife 40 is convenient for memorizing the position. At the same time, the minimum scale unit of the angle scale ring 45 of the air knife 40 is 0.1°, so as to improve the calibration position accuracy during fine adjustment. Because the scanning line of the laser and the processing port 44 must be kept parallel. The angle scale ring 45 is equivalent to the external adjustment scale of the fine-tuning mirror 51. After the laser scanning line and the processing port 44 are set to be parallel, they can be used at the adjusted angle. It is enough to avoid debugging every installation and improve the efficiency of processing operations.

A processing method of a laser processing device, the laser processing device is used to perform laser cutting processing on a workpiece, the laser cutting processing includes linear cutting processing, and the linear cutting processing includes the following steps:

The system control card 32 obtains the processing and cutting path of the workpiece, and the processing and cutting path includes N linear processing paths, N≥1;

The red light indicator in the laser processing device is used to debug the laser light path. The red light is reflected by the galvanometer 50 and emitted from the processing port 44. The laser controller 60 controls the rotation of the reflective lens in the galvanometer 50. The red light passes through the rotating reflective lens during processing. The laser cutting path is formed by moving in the port 44, the laser cutting path and the extending direction of the processing port 44 are the same, and the laser cutting path is located in the processing port 44;

The workpiece is placed on the fixture board 11, and the system control card 32 controls the position of the drive assembly 12 according to the machining and cutting path to drive the fixture board 11 to move, so that the first linear machining path of the workpiece overlaps the direction of the laser cutting path, and the laser controller 60 controls the laser The generator 31 emits laser and drives the mirror to rotate, and the laser cuts along the laser cutting path to complete the first linear cutting process;

If N=1, the linear cutting process of the workpiece is completed. If N>1, the system control card 32 controls the position driving component 12 to drive the fixture plate 11 to move according to the processing and cutting path, so that the next linear processing path of the workpiece is the same as the laser cutting process. When the paths overlap, the laser controller 60 controls the laser generator 31 to emit laser light and drives the mirror to rotate. The laser cuts along the laser cutting path to complete the next linear cutting process. Repeat this step until all linear cutting processes of the workpiece are completed.

The processing method of the laser processing device of the present invention, the traditional laser processing, is that the laser beam is fixed, and the movement of the workpiece placed on the fixture plate 11 is driven by the servo motor.

When the laser starts to cut in a straight line, all the transmission mechanism parts of the fixture platform 10 run, and the laser controller 60 controls the oscillation of the fine-tuning mirror 51 of the galvanometer 50 to form a laser cutting path in the processing port 44. The laser cutting path and the processing port The extension direction of 44 is the same. Laser processing is carried out by high-speed scanning, with high precision and extremely fast speed, which effectively improves the efficiency of laser linear cutting processing, especially reduces the formation probability of cracks and breakage of hard and brittle materials, and effectively improves the performance of hard and brittle materials. Processing yield. All transmission mechanisms of the fixture platform 10 only operate to change positions when switching the machining positions. Compared with traditional machining efficiency, it is greatly improved.

Further, the laser processing device includes an image recognition device 61 for processing information of the workpiece on the fixture plate 11, and the image recognition device 61 is connected in communication with the system control card 32;

The recognition range of the image recognition device 61 is located below the corresponding air knife 40. When the workpiece on the fixture plate 11 moves to the recognition range, the image recognition device 61 sends the recognition signal to the system control card 32, and the system control card 32 controls the position drive assembly 12 stop transmission;

The image recognition device 61 preliminarily recognizes that the workpiece is moved to the corresponding lower part of the air knife 40 , and the system control card 32 adjusts the more precise processing position and processing direction of the workpiece through the position driving component 12 . The processing position of the workpiece is automatically and roughly positioned by the image recognition device 61, which effectively improves the processing efficiency. The image recognition device 61 is a sensor or an image recognition device 61 .

The manual operating system control card 32 controls the position driving component 12 to adjust the workpiece to the processing position, obtains the image processing path of the workpiece, and marks the processing starting point on the image processing path. More specifically, manually control the rotating part 16 , the left and right moving components 13 and the front and rear moving components 14 on the system control card 32 through the identification information fed back by the image recognition device 61 to fine-tune the workpiece to a precise processing position, so that the workpiece can be adjusted when needed. The best location for machining.

As one embodiment, the image recognition device 61 is a coaxial camera, and the imaging range of the coaxial camera is located below the air knife 40 correspondingly. The coaxial camera is connected in communication with the system control card 32 .

Further, the model processing path of the workpiece is formed in the system control card 32, and the model processing path and the image processing path are correspondingly matched to form a processing path through the system control card 32, and the system control card 32 calibrates the processing initial point according to the image processing path. Through the system control card 32, the model processing path and the image processing path are correspondingly matched to form a processing path, so as to make preparations for laser cutting before processing. Through the cooperation of the system control card 32 and the image recognition device 61, the processing logic is automatically generated by programming on the system control card 32, no human intervention is required during processing, and the intelligence is higher. Processing position, processing flexibility is higher.

To sum up, the embodiments of the present invention provide a laser processing apparatus and a processing method thereof, wherein the system control card 32 is respectively connected to the position driving assembly 12 , the laser controller 60 and the air supply compression assembly in communication connection. The system control card 32 drives the fixture plate 11 to move through the position driving assembly 12 to adjust the processing position of the workpiece. The system control card 32 controls the air supply to the air knife 40 through the air supply compression assembly. The system control card 32 controls the laser switch, angle adjustment and mobile processing through the laser controller 60 . The fixture platform 10 is used to fix the workpiece and move the workpiece to the processing position. The workpiece is placed on the fixture plate 11 for fixing, and the fixture plate 11 is driven by the position driving component 12 to change the processing position, which at least includes forward and backward movement and left and right movement. The optical path assembly 20 is mainly responsible for laser processing. The laser lifting bracket 21 is used to support the laser generating assembly 30 and the air knife 40. When the laser generating assembly 30 and the air knife 40 respectively maintain a certain processing distance from the fixture plate 11, at the same time, adjust the vertical direction of the laser generating assembly 30 and the air knife 40. height to adjust the laser focus. The laser controller 60 controls the laser generator 31 to emit laser light. The galvanometer 50 is used to reflect the laser light to the processing port 44 of the air knife 40, and by rotating the galvanometer 50 to adjust the output position and linear movement range of the laser, the laser is emitted to the galvanometer 50, and the laser is reflected to the wind by the galvanometer 50. In the machining port 44 of the knife 40 , by rotating the galvanometer 50 , the laser reflection angle is adjusted to ensure that the laser is emitted from the machining port 44 , and the linear movement path of the laser is consistent with the extending direction of the machining port 44 . The laser controller 60 controls the rotation of the galvanometer 50 to make the laser reflected by the galvanometer 50 move according to the set linear processing path. When the laser moves linearly and cuts, the fixture platform 10 locks the position of the workpiece, and the galvanometer 50, The air knife 40 is used in conjunction with the fixture platform 10. The air knife 40 provides a processing range for the laser, and the movement accuracy and speed of the galvanometer 50 are used to improve the overall laser linear cutting processing efficiency. The air supply compression assembly communicates with the buffer cavity through the air inlet 43, and the air supply compression assembly fills the buffer cavity with gas, and both the gas and the laser are ejected from the processing port 44, so that the laser processing position is located within the range where the gas is blown out, and the air knife is lifted. 40 dust removal accuracy, improve the dust removal effect.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be It is regarded as the protection scope of the present invention.

Claims (10)

1. A laser processing apparatus, characterized in that:

the fixture platform comprises a fixture plate for fixing the fixture and a position driving assembly for driving the fixture plate to change the machining position, and the fixture plate is mounted at the upper end of the position driving assembly;

the laser device comprises a light path component, the light path component comprises a laser lifting support, a laser generating component and an air knife, the laser generating component is installed on the laser lifting support, the laser generating component comprises a laser generator, a vibration mirror and a laser controller, the laser controller is in communication connection with the laser generator, the laser controller is in drive connection with the vibration mirror, the upper end of the air knife is provided with a light inlet, the air knife is internally provided with a gas buffering cavity, the outer side of the air knife is provided with an air inlet, the air inlet is communicated with the gas buffering cavity, the lower end of the air knife is provided with a strip-shaped processing port, the processing port faces the clamp plate, the light inlet, the gas buffering cavity and the processing port are communicated to form a laser ejection channel, the light inlet is communicated with a light outlet of the vibration mirror, and the laser controller controls the laser generator to eject laser towards the vibration mirror, the laser reflected by the galvanometer is emitted through the laser emitting channel, and the laser controller controls the galvanometer to rotate so as to cut the laser in a moving way along the extending direction of the processing port;

a gas supply compression assembly in communication with the gas inlet;

and the system controller is in communication connection with the position driving assembly, the laser controller and the air supply compression assembly respectively.

2. The laser processing apparatus according to claim 1, wherein: the position driving assembly comprises a left-right moving assembly and a front-back moving assembly which are arranged along the horizontal direction, the clamp plate is slidably mounted at the top end of the front-back moving assembly, the front-back moving assembly drives the clamp plate to move front and back, the front-back moving assembly is slidably mounted on the left-right moving assembly, and the left-right moving assembly drives the front-back moving assembly to slide left and right.

3. The laser processing apparatus according to claim 2, wherein: the position drive assembly comprises a lifting part and a rotating part, the rotating part is in driving connection with the left-right moving assembly, and the lifting part is in driving connection with the rotating part.

4. The laser processing apparatus according to claim 1, wherein: the ratio of the length of the processing opening to the width of the processing opening is set to be 45-60.

5. The laser processing apparatus according to claim 1, wherein: the mirror that shakes is the single-axis scanning mirror that shakes, the single-axis scanning mirror that shakes includes fine setting speculum, single-axis scanning lens and adjusting screw, adjusting screw with fine setting speculum sliding connection, the single-axis scanning lens is located one side of fine setting speculum.

6. The laser processing apparatus according to claim 5, wherein: the utility model discloses a reflector of air knife, include the speculum that shakes, the speculum with the junction of air knife is fixed with angle scale ring, the initial scale of angle scale ring aligns with the initial position of fine setting speculum, angle scale ring cover is established the periphery of air knife, the relative angle scale ring of air knife rotates.

7. A processing method of a laser processing device is characterized in that: performing laser cutting processing on a workpiece by the laser processing device according to any one of claims 1 to 6, the laser cutting processing including linear cutting processing, the linear cutting processing including the steps of:

the method comprises the steps that a system controller obtains a machining cutting path of a machined part, wherein the machining cutting path comprises N linear machining paths, and N is more than or equal to 1;

the laser processing device comprises a laser processing device, a laser controller, a laser pointer, a vibration mirror, a laser cutting path and a laser cutting path, wherein the laser processing device is used for processing laser light path debugging of a red light indicator in the laser processing device, the red light is reflected by the vibration mirror and is emitted from a processing port, the laser controller controls the rotation of a reflection lens in the vibration mirror, the red light moves in the processing port through the rotating reflection lens to form the laser cutting path, the extending direction of the laser cutting path is the same as that of the processing port, and the laser cutting path is positioned in the processing port;

the processing part is placed on the clamp plate, the system controller controls the position driving assembly to drive the clamp plate to move according to the processing and cutting path, so that a first linear processing path of the processing part is overlapped with the laser cutting path, the laser controller controls the laser generator to emit laser and drives the reflecting lens to rotate, and the laser cuts along the laser cutting path to finish first linear cutting processing;

if N is equal to 1, linear cutting machining of the machined part is completed, if N is greater than 1, the system controller controls the position driving assembly to drive the clamp plate to move according to the machining cutting path, so that the next linear machining path of the machined part is overlapped with the laser cutting path, the laser controller controls the laser generator to emit laser and drive the reflecting lens to rotate, the laser cuts along the laser cutting path, the next linear cutting machining is completed, and the steps are repeated until all linear cutting machining of the machined part is completed.

8. The processing method of a laser processing apparatus according to claim 7, wherein: the laser processing device comprises an image recognition device for processing the processing piece processing information on the clamp plate, and the image recognition device is in communication connection with the system controller;

the recognition range of the image recognition device is located below the air knife correspondingly, when the workpiece on the clamp plate moves to the recognition range, the image recognition device sends a recognition signal to a system controller, and the system controller controls a position driving assembly to stop transmission;

and the manual operation system controller controls the position driving assembly to adjust the workpiece to a processing position, acquires an image processing path of the workpiece, and marks a processing starting point on the image processing path.

9. The processing method of a laser processing apparatus according to claim 8, wherein: the image recognition device is a coaxial camera.

10. The processing method of the laser processing apparatus according to claim 9, wherein: and forming a model processing path of the workpiece in the system controller, correspondingly matching the model processing path with the image processing path through the system controller to form a processing path, and calibrating a processing initial point by the system controller according to the image processing path.

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