Coaxial adjustment device, laser processing apparatus, and coaxial adjustment method

Abstract

The present application relates to a coaxial adjusting device, a laser processing device and a coaxial adjusting method. The coaxial adjusting device comprises an adjusting reference piece and a lens mounting seat. The adjusting reference piece has a through hole, the edge of the through hole is provided with a first scale line extending along a third direction and a second scale line extending along a second direction; the lens mounting seat is provided with the adjusting reference piece at both ends respectively; the lens mounting seat is used for mounting a lens group, the outer wall of the lens group is provided with a third scale line and a fourth scale line extending along the axial direction of the lens group, and the two are circumferentially spaced. The scale lines of the adjusting reference pieces on both sides are used as the reference, the angle of the lens group relative to the adjusting reference piece is adjusted, so that the scale lines of the lens group and the scale lines on the adjusting reference piece are collinear, and the coaxiality of the lens group and the through hole is realized. Since the light beam directly passes through the axis of the through hole, the coaxiality of the light beam and the lens group is ensured, and the problem of inconvenient adjustment of the existing processing device is solved.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, and in particular to a coaxial adjustment device, laser processing equipment, and coaxial adjustment method. Background Technology

[0002] Laser processing utilizes the energy of light, which is focused by a lens to achieve a very high energy density at the focal point, and then processes the material through a photothermal effect. Laser processing requires no tools, has a high processing speed, minimal surface deformation, and can process a wide variety of materials. Various processing techniques are performed on materials using a laser beam, such as drilling, cutting, scribing, welding, and heat treatment.

[0003] Laser processing equipment typically contains many optical components in its optical path, such as optical waveplates, beam expanders, and shapers. These optical components need to be coaxial with the laser beam to achieve the best processing results.

[0004] The existing method for concentrically aligning the beam with the optical components involves installing a pinhole fixture at the inlet of the optical component, observing the diffraction rings of the beam at the outlet, and adjusting the optical component to make the center of the pinhole fixture coaxial with the beam. After adjusting the inlet, the inlet pinhole fixture is removed and installed at the outlet, and then the outlet pinhole fixture is adjusted to be coaxial with the beam again. Because adjusting the inlet affects the outlet position, and adjusting the outlet affects the inlet position, the inlet and outlet positions need to be adjusted repeatedly, and the final result may not be ideal. Therefore, the existing method is inconvenient to use and adjust. Summary of the Invention

[0005] Therefore, it is necessary to provide a coaxial adjustment device that solves the problem of inconvenience in using existing coaxial adjustment methods.

[0006] A coaxial adjustment device includes an adjustment reference component and a lens mounting base. The adjustment reference component has a through hole, and the outer edge of the through hole is provided with a first scale line extending along a third direction and a second scale line extending along a second direction, the second direction and the third direction forming an angle. At least one adjustment reference component is provided at each end of the lens mounting base at a distance from each other. The lens mounting base is used to mount a lens assembly, and the outer wall of the lens assembly is provided with a third scale line and a fourth scale line extending along its own axial direction, and the two are spaced apart along the circumference of the lens assembly. The angle of the lens assembly relative to the adjustment reference component is adjusted so that the first scale line and the third scale line, and the second scale line and the fourth scale line are all collinear along the first direction, and the through hole is coaxial with the lens assembly.

[0007] In one embodiment, the coaxial adjustment device further includes a first bracket and a first indicator mounted on the first bracket; the first indicator and the lens group are spaced apart along a third direction, and the first indicator is used to emit a first planar light, which can coincide with both the first scale line and the third scale line.

[0008] In one embodiment, the coaxial adjustment device further includes a second bracket and a second indicator mounted on the second bracket; the second indicator is spaced apart from the lens group along a second direction, and the second indicator is used to emit a second planar light, which can coincide with both the second scale line and the fourth scale line.

[0009] In one embodiment, the coaxial adjustment device further includes a first connector that passes through one end of the first indicator along a third direction and is connected to the first bracket; the coaxial adjustment device further includes a second connector spaced apart from the first connector that passes through one end of the first indicator along a first direction and is connected to the first bracket.

[0010] In one embodiment, both the first connector and the second connector include a head and a rod connected to the head, with one end of the rod away from the head passing through the first indicator and connected to the first bracket, and the rod being movably connected to the first indicator; the rod is fitted with an elastic member, and the elastic member abuts between the head and the first indicator to press the first indicator relative to the first bracket.

[0011] In one embodiment, the coaxial adjustment device further includes a ball bearing disposed between the first bracket and the first indicator, and rotatably connected to both; the first bracket is provided with a first groove extending along a first direction and a second groove extending along a third direction; the coaxial adjustment device further includes a first ball joint and a second ball joint spaced apart, one end of the first ball joint passing through the first indicator and slidably connected to the first groove, and one end of the second ball joint passing through the first indicator and slidably connected to the second groove, and both the first ball joint and the second ball joint are threadedly connected to the first indicator; the ball bearing and the second ball joint together form a second rotating shaft, the first ball joint rotating about its own axis, which can drive one end of the first indicator along the first direction to deflect relative to the first bracket about the second rotating shaft; the ball bearing and the first ball joint together form a first rotating shaft, the second ball joint rotating about its own axis, which can drive one end of the first indicator along the third direction to deflect relative to the first bracket about the first rotating shaft.

[0012] In one embodiment, the lens mounting base includes a movable plate connected to the lens assembly, a fixed plate connected to the movable plate, and a plurality of first adjusting posts. One end of each first adjusting post is connected to the fixed plate, and the other end abuts against the movable plate. The first adjusting posts are used to adjust the distance between the movable plate and the fixed plate along a second direction.

[0013] In one embodiment, the lens mounting base further includes a plurality of second adjusting posts, one end of which is connected to the movable plate and the other end of which abuts against the fixed plate. The second adjusting posts are used to adjust the distance between the movable plate and the fixed plate in a third direction.

[0014] In one embodiment, the adjustment reference includes a base for mounting the eyeglass frame and a light-transmitting plate connected to the base, with the through hole disposed in the light-transmitting plate.

[0015] In one embodiment, the coaxial adjustment device further includes a lens group.

[0016] A laser processing device includes the coaxial adjustment device described above.

[0017] A coaxial adjustment method includes the following steps:

[0018] Adjust the light emission angle of the first planar light so that the first planar light coincides with the first scale line of the adjustment reference on both sides;

[0019] Adjust the light emission angle of the second planar light so that the second planar light coincides with the second scale line of the adjustment reference on both sides;

[0020] Adjust the angle of the lens group so that the third scale line of the lens group is coplanar with the first plane light;

[0021] Adjust the angle of the lens group so that the fourth scale line of the lens group is coplanar with the second plane light.

[0022] This technical solution has the following beneficial effects: The aforementioned coaxial adjustment device includes an adjustment reference component and a lens mounting base. The adjustment reference component has a through hole, and the edge of the through hole is provided with a first scale line extending along a third direction and a second scale line extending along a second direction. At least one adjustment reference component is provided at each end of the lens mounting base at a distance. The lens mounting base is used to install a lens assembly, and the outer wall of the lens assembly is provided with a third scale line and a fourth scale line extending along its own axial direction, and the two are circumferentially spaced. By providing scale lines pointing to the second direction and scale lines pointing to the third direction on the lens assembly and the adjustment reference component respectively, since the intersection of the two scale lines corresponds to the axis of the lens assembly and the through hole respectively, the angle of the lens assembly relative to the adjustment reference component is adjusted with the scale lines of the adjustment reference components on both sides as a reference, so that the scale lines of the lens assembly are collinear with the scale lines on the adjustment reference component, thereby achieving coaxiality between the lens assembly and the through hole. Since the light beam directly passes through the axis of the through hole, it ensures that the light beam is coaxial with the lens assembly, solving the problem of inconvenient adjustment in the existing processing equipment.

[0023] The present invention provides a laser processing equipment, including the aforementioned coaxial adjustment device, which facilitates the adjustment of the beam and the lens group to be coaxial to meet actual processing requirements and improves the flexibility of actual processing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a coaxial adjustment device provided in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the coaxial adjustment device shown from another perspective;

[0026] Figure 3 for Figure 1 A magnified view of point A shown below;

[0027] Figure 4 for Figure 1 The enlarged view of point B shown;

[0028] Figure 5 A schematic diagram of the structure for adding a coaxial adjustment device for planar light.

[0029] Reference numerals in the figures: 10-coaxial adjustment device; 110-adjustment reference component; 111-base; 112-light transmission plate; 1121-through hole; 120-reflector;

[0030] 210 - Lens mounting base; 220 - Lens group;

[0031] 310 - First stent; 320 - Second stent;

[0032] 410 - First indicator; 420 - Second indicator;

[0033] 510 - First ball joint; 520 - Second ball joint; 530 - Ball bearing; 540 - First connector; 550 - Second connector; 560 - Elastic element;

[0034] 610 - Movable plate; 620 - Fixed plate; 630 - First adjusting column; 640 - Second adjusting column;

[0035] 2000-beam. Detailed Implementation

[0036] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0042] In a current application scenario, the common method for aligning the light beam with an optical device typically involves installing a pinhole fixture at the inlet of the optical device. The diffraction rings of the beam are observed at the outlet, and the optical device is adjusted to ensure the center of the pinhole fixture is coaxial with the beam. After adjusting the inlet, the inlet pinhole fixture is removed and installed at the outlet, and then the outlet pinhole fixture is adjusted to be coaxial with the beam again. However, the inventors discovered that adjusting the inlet affects the outlet position, and vice versa, requiring repeated adjustments of the inlet and outlet positions. The final result may not be ideal, and the fixture obstructs the beam, preventing direct observation of the beam effect behind the lens assembly. The fixture must be removed to observe the beam effect. To address these technical problems, the inventive concept of this application was developed, which will be explained through the following embodiments.

[0043] Figure 1 This is a schematic diagram of the structure of a coaxial adjustment device provided in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the coaxial adjustment device shown from another perspective.

[0044] In one application scenario, the first direction in the following embodiments can be the X direction, the second direction can be the Y direction, and the third direction can be the Z direction. For example... Figure 1 and Figure 2As shown, a coaxial adjustment device 10 provided in an embodiment of the present invention includes an adjustment reference 110 and a lens mounting base 210; the adjustment reference 110 has a through hole 1121, and the edge of the through hole 1121 is provided with a first scale line extending in the Z direction and a second scale line extending in the Y direction; at least one adjustment reference 110 is provided at each end of the lens mounting base 210 at intervals; the lens mounting base 210 is used to mount a lens assembly 220, and the outer wall of the lens assembly 220 is provided with a third scale line and a fourth scale line extending along its own axial direction, and the third scale line and the fourth scale line are provided at intervals in the circumferential direction; the angle of the lens assembly 220 relative to the adjustment reference 110 is adjusted such that the first scale line and the third scale line, as well as the second scale line and the fourth scale line, are collinear in the X direction, so that the through hole 1121 is coaxial with the lens assembly 220.

[0045] like Figure 1 As shown, specifically, the first angle formed between the first and second scale lines, and the second angle formed between the third and fourth scale lines, are of the same size. The intersection of the first and second scale lines corresponds to the axis of the through-hole 1121, and the intersection of the third and fourth scale lines corresponds to the axis of the lens group 220. Therefore, during adjustment, the scale lines on the adjustment reference pieces 110 on both sides can be used as a reference to adjust the angle of the lens group 220 relative to the adjustment reference pieces 110, making the scale lines of the lens group 220 collinear with the scale lines on the adjustment reference pieces 110, thus achieving coaxiality between the lens group 220 and the through-hole 1121 on the adjustment reference pieces 110. Since the beam 2000 directly passes through the axis of the through-hole 1121, it ensures that the beam 2000 and the lens group 220 are coaxial, solving the problem of inconvenient adjustment in the existing processing equipment, thereby improving the convenience of coaxial adjustment.

[0046] Figure 5 A schematic diagram showing the structure of a coaxial adjustment device for planar light. (See attached diagram.) Figure 1 and Figure 5 As shown, in one embodiment, the coaxial adjustment device 10 further includes a first bracket 310 and a first indicator 410 mounted on the first bracket 310. The first indicator 410 is spaced apart from the lens group 220 along the Z direction. The first indicator 410 is used to emit a first planar light, which is parallel to the XOZ plane. When the first scale line and the third scale line are collinear, the first planar light emitted by the first indicator 410 can coincide with the first scale line and the third scale line. In this way, it is easy to determine whether the first scale line and the third scale line are collinear by using the first indicator 410. In other embodiments, a strip-shaped object such as a thread can also be used to determine whether the two scale lines are collinear. The two ends of the thread are collinear with the scale on the adjustment reference member 110. The thread is straightened, and it is determined whether the position where the thread contacts the lens group 220 is collinear with the scale line on the lens group 220.

[0047] like Figure 1 and Figure 5 As shown, in another embodiment, the coaxial adjustment device 10 further includes a second bracket 320 and a second indicator 420 mounted on the second bracket 320. The second indicator 420 is spaced apart from the lens group 220 along the Y direction. The second indicator 420 is used to emit a second planar light, which is parallel to the XOY plane. When the second scale line and the fourth scale line are collinear, the second planar light emitted by the second indicator 420 can coincide with the second scale line and the fourth scale line. Thus, it is convenient to determine whether the second scale line and the fourth scale line are collinear by using the second indicator 420.

[0048] During installation and debugging, the first planar light beam is first aligned with the first scale line on the two side adjustment references 110 to determine the first reference plane. Next, the second planar light beam is aligned with the second scale line on the two side adjustment references 110 to determine the second reference plane. Then, the angle of the lens group 220 relative to the adjustment references 110 is adjusted so that the two scale lines of the lens group 220 are aligned with the first and second planar light beams respectively, thereby accurately positioning the lens group 220 and achieving coaxiality between the beam 2000 and the lens group 220.

[0049] Figure 3 for Figure 1 A magnified view of a portion at point A shown. Figure 1 and Figure 3 As shown, in one embodiment, the coaxial adjustment device 10 further includes a first connector 540, which passes through one end of the first indicator 410 along the Z direction and is connected to the first bracket 310; the coaxial adjustment device 10 also includes a second connector 550 spaced apart from the first connector 540, which passes through one end of the first indicator 410 along the X direction and is connected to the first bracket 310. By setting the first connector 540 and the second connector 550, the first indicator 410 is fixed to the first bracket 310, improving the installation stability of the first indicator 410, thereby ensuring the stability of the first planar light emitted by the first indicator 410 and reducing the impact of the shaking of the first indicator 410 on the adjustment accuracy of the beam 2000 and the lens group 220. Both the first connector 540 and the second connector 550 can be screws, with one end of the screw passing through the first indicator 410 and threadedly connected to the bracket. The way in which the second indicator 420 is connected to the second bracket 320 is the same as the way in which the first indicator 410 is connected to the first bracket 310, and will not be described again here.

[0050] like Figure 3As shown, in a specific embodiment, both the first connector 540 and the second connector 550 include a head and a rod connected to the head. One end of the rod, away from the head, passes through the first indicator 410 and connects to the first bracket 310, and the rod is movably connected to the first indicator 410. An elastic element 560 is sleeved on the rod and abuts against the head and the first indicator 410 to press the first indicator 410 against the first bracket 310. When the elastic element 560 abuts against the first indicator 410 and the head, it is in a compressed state, thus pressing the first indicator 410 against the first bracket 310 and ensuring the connection between the first indicator 410 and the first bracket 310. Furthermore, the presence of the elastic element 560 between the first indicator 410 and the head reduces contact wear and improves service life.

[0051] like Figure 3 As shown, in another embodiment, the coaxial adjustment device 10 further includes a ball bearing 530, which is disposed between the first support 310 and the first indicator 410 and rotatably connected to both. The first support 310 is provided with a first groove extending along the X direction and a second groove extending along the Z direction. The coaxial adjustment device 10 also includes a first ball joint 510 and a second ball joint 520 spaced apart. One end of the first ball joint 510 passes through the first indicator 410 and is slidably connected to the first groove, and one end of the second ball joint 520 passes through the first indicator 410 and is slidably connected to the second groove. Both the first ball joint 510 and the second ball joint 520 are threadedly connected to the first indicator 410. The ball bearing 530 and the second ball joint 520 together form a second rotating shaft, and the ball bearing 530 and the first ball joint 510 together form a first rotating shaft.

[0052] With the cooperation of the ball bearing 530, the first groove, and the first connector 540, the rotation of the first bracket 310 around the ball bearing 530 is restricted, ensuring the installation stability of the first bracket 310. Since both the first ball head 510 and the second ball head 520 are threadedly connected to the first bracket 310, when the first ball head 510 rotates around its own axis, it can cause one end of the first indicator 410 in the X direction to deflect relative to the first bracket 310 around the second axis of rotation; when the second ball head 520 rotates around its own axis, it can cause one end of the first indicator 410 in the Z direction to deflect relative to the first bracket 310 around the first axis of rotation. In other words, one end of the first indicator 410 can be slightly tilted relative to the first bracket 310 in the Y direction, so that the angle and distance between them change, achieving fine adjustment. Thus, when there is an installation error in the adjustment reference 110 or the first bracket 310, causing the first planar light to not coincide with the first scale line, the angle of the first indicator 410 relative to the first bracket 310 can be adjusted to change the light emission position of the first planar light, making the first planar light coincide with the first scale line of the adjustment references 110 on both sides, facilitating subsequent coaxial adjustment operations. Furthermore, since the fine-tuning range achieved by rotating the first ball joint 510 and the second ball joint 520 is limited, the angle and spacing of the first indicator 410 at the corresponding ends of the first ball joint 510 and the second ball joint 520 relative to the first bracket 310 can be changed by moving the first ball joint 510 and the second ball joint 520 along the first and second slides respectively, thus meeting actual adjustment needs.

[0053] Figure 4 for Figure 1 A magnified view of point B shown. Figure 1 and Figure 4As shown, in a specific embodiment, the lens mounting base 210 includes a movable plate 610 connected to the lens assembly 220, a fixed plate 620 connected to the movable plate 610, and a plurality of first adjusting posts 630. One end of each first adjusting post 630 is connected to the fixed plate 620, and the other end abuts against the movable plate 610. The first adjusting post 630 is used to adjust the distance between the movable plate 610 and the fixed plate 620 along the Y direction. Specifically, the fixed plate 620 is L-shaped, including a vertical plate and a horizontal plate. Mounting plates are provided at both ends of the movable plate 610 along the X direction, and mounting holes are provided on the mounting plates for mounting the lens assembly 220. There are two first adjusting posts 630, and the two first adjusting posts 630 are respectively threaded to both ends of the vertical plate along the X direction. When only one side of the first adjusting post 630 is adjusted, the movable plate 610 on the corresponding side deflects relative to the fixed plate 620 along the Y direction, thereby changing the angle between the movable plate 610 and the fixed plate 620. Simultaneously adjusting the first adjusting posts 630 on both sides, with the same amount of screwing in or out on both sides, causes the movable plate 610 to move closer to or further away from the fixed plate 620 along the Y direction, thus changing the distance between them. In this way, by adjusting the extension length of the first adjusting post 630 relative to the fixed plate 620, the distance and angle between the fixed plate 620 and the movable plate 610 along the Y direction are changed. The first adjusting post 630 can specifically be a bolt, etc. In other embodiments, the first adjusting post 630 can also be a telescopic rod structure.

[0054] like Figure 1 As shown, in another specific embodiment, the lens mounting base 210 further includes a plurality of second adjusting posts 640. One end of each second adjusting post 640 is connected to a movable plate 610, and the other end abuts against a fixed plate 620. The second adjusting posts 640 are used to adjust the distance between the movable plate 610 and the fixed plate 620 along the Z direction. Specifically, the plurality of second adjusting posts 640 are threadedly connected to both ends of the movable plate 610 along the X direction. When adjusting a single second adjusting post 640, the movable plate 610 on the corresponding side deflects relative to the fixed plate 620 along the Z direction. When adjusting the second adjusting posts 640 on both sides simultaneously, the distance between the movable plate 610 and the fixed plate 620 along the Z direction changes. Under the combined action of the first adjusting column 630 and the second adjusting column 640, the position of the movable plate 610 is changed, so that the angle and position of the lens group 220 mounted on the movable plate 610 relative to the adjusting reference 110 are changed, so that the scale line on the lens group 220 is collinear with the scale line on the adjusting reference 110, thereby realizing that the lens group 220 and the beam 2000 are coaxial.

[0055] like Figure 1As shown, in one embodiment, the adjustment reference 110 can specifically be a frame mounting base, including a base 111 for mounting the frame and a light-transmitting plate 112 connected to the base 111, with a through hole 1121 disposed in the light-transmitting plate 112. In actual use, optical components, such as apertures and optical waveplates, may also be required. Therefore, by providing the light-transmitting plate 112, optical components can be directly mounted through the through hole 1121 on the light-transmitting plate 112, and the beam 2000 is directed through the optical component in the through hole 1121 to the frame mounted on the adjustment reference 110, improving ease of use.

[0056] It should be noted that the aforementioned adjustment reference 110 may also be, for example, a light-transmitting plate 112. The light-transmitting plate may be, for example, a ring structure (not shown in the figure). The outer edge of the ring structure is provided with the scale lines of the above embodiment. To avoid redundancy, it will not be described in detail here.

[0057] like Figure 5 As shown, in one embodiment, the base 111 has mounting holes for mounting lenses or reflectors 120. The reflector 120 or lens is fixed to the base 111 using bolts or other fasteners through these mounting holes. Each set of mounting holes has at least two holes, with two points forming a straight line to determine the mounting direction of the reflector frame. The reflector 120 of the reflector frame faces the light-transmitting plate 112 to reflect the incident light beam. If the direction of the reflected light beam 2000 needs to be changed, only the mounting direction of the reflector frame needs to be changed; the adjustment reference 110 does not need to be replaced, and optical components can still be installed normally.

[0058] Furthermore, the present invention also provides a laser processing device, including the coaxial adjustment device 10 as described above. This laser processing device can be a laser cutting device or a laser drilling device, etc. This laser processing device, including the aforementioned coaxial adjustment device 10, can use the scale lines of the adjustment reference members 110 on both sides as a reference, making the scale lines of the lens group 220 collinear with the scale lines on the adjustment reference members 110, thus achieving coaxiality between the lens group 220 and the through hole 1121 on the adjustment reference members 110. Since the beam 2000 directly passes through the axis of the through hole 1121, the coaxiality of the beam 2000 and the lens group 220 is guaranteed, solving the problem of inconvenient adjustment in the prior art. Moreover, by adjusting the beam and the lens group to be coaxial through the coaxial adjustment device, the actual processing requirements are met, improving the flexibility of actual processing.

[0059] The present invention also provides a coaxial adjustment method, comprising the following steps:

[0060] Adjust the light emission angle of the first planar light so that the first planar light coincides with the first scale line of the adjustment reference 110 on both sides.

[0061] Specifically, the first ball joint 510 rotates around its own axis, causing one end of the first indicator 410 in the X direction to deflect relative to the first bracket 310 around a second axis; the second ball joint 520 rotates around its own axis, causing one end of the first indicator 410 in the Z direction to deflect relative to the first bracket 310 around a first axis. By adjusting the angle of the first indicator 410 relative to the first bracket 310, the emission angle of the first planar light is changed, so that the first planar light coincides with the first scale line of the adjustment reference members 110 on both sides.

[0062] Adjust the light emission angle of the second plane light so that the second plane light coincides with the second scale line of the adjustment reference 110 on both sides.

[0063] Specifically, the coaxial adjustment device 10 further includes a second ball bearing, which is disposed between the second bracket 320 and the second indicator 420 and rotatably connected to both. The second bracket 320 is provided with a third slide groove extending along the X direction and a fourth slide groove extending along the Y direction. The coaxial adjustment device 10 also includes a third ball head and a fourth ball head spaced apart. One end of the third ball head passes through the second indicator 420 and is slidably connected to the third slide groove, and one end of the fourth ball head passes through the second indicator 420 and is slidably connected to the fourth slide groove. Both the third and fourth ball heads are threadedly connected to the second indicator 420. The second ball bearing and the fourth ball head together form a fourth rotating shaft, and the second ball bearing and the third ball head together form a third rotating shaft.

[0064] The rotation of the third ball-head post around its own axis causes one end of the second indicator 420 in the X direction to deflect relative to the second bracket 320 around the fourth axis. The rotation of the fourth ball-head post around its own axis causes one end of the second indicator 420 in the Y direction to deflect relative to the second bracket 320 around the third axis. By adjusting the angle of the second indicator 420 relative to the second bracket 320, the emission angle of the second plane light is changed, causing the second plane light to coincide with the second scale line of the adjustment reference pieces 110 on both sides.

[0065] Adjust the angle of the lens group 220 so that the third scale line of the lens group 220 is coplanar with the first plane light.

[0066] Specifically, by adjusting the first adjusting column 630, the movable plate 610 moves closer to or further away from the fixed plate 620 along the Y direction, thus changing the angle and spacing between the movable plate 610 and the fixed plate 620 along the Y direction. By adjusting the second adjusting column 640, the spacing and angle between the movable plate 610 and the fixed plate 620 along the Z direction change. Under the combined action of the first adjusting column 630 and the second adjusting column 640, the position of the movable plate 610 is changed, causing the angle and position of the lens group 220 mounted on the movable plate 610 relative to the adjusting reference member 110 to change, thereby making the third scale line of the lens group 220 coplanar with the first planar light.

[0067] Adjust the angle of lens group 220 so that the fourth scale line of lens group 220 is coplanar with the second plane light.

[0068] Since the first angle formed between the first and second scale lines, and the second angle formed between the third and fourth scale lines are of the same size, once the third scale line of the lens group 220 is coplanar with the first planar light, simply rotating the lens group 220 around its axis will make the fourth scale line of the lens group 220 coplanar with the second planar light. The intersection of the first and second scale lines corresponds to the axis of the through hole 1121, and the beam 2000 passes directly through the axis of the through hole 1121, thus ensuring that the beam 2000 is coaxial with the lens group 220, solving the problem of inconvenient adjustment in the existing processing equipment.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A coaxial adjustment device, characterized by The coaxial adjustment device comprises: an adjustment reference element having a through hole, an outer side edge of the through hole being provided with a first scale line extending along a third direction and a second scale line extending along a second direction, the second direction and the third direction being at an angle; the through hole being used for mounting an optical device; a lens mounting seat, at least one of the adjustment reference elements being provided at two ends of the lens mounting seat respectively; the lens mounting seat being used for mounting a lens group, an outer wall of the lens group being provided with a third scale line and a fourth scale line extending along an axis direction of the lens group; adjusting an angle of the lens group relative to the adjustment reference element so that the first scale line and the third scale line and the second scale line and the fourth scale line can be collinear along a first direction, the through hole being coaxial with the lens group; the first direction being an optical axis direction of the lens group, the second direction being a direction perpendicular to the first direction and parallel to a lower surface of the lens mounting seat, and the third direction being a direction perpendicular to the first direction and the second direction.

2. The coaxial adjustment device of claim 1, wherein, the coaxial adjustment device further comprises a first support and a first indicator mounted on the first support; the first indicator is spaced apart from the lens group along the third direction, and the first indicator is used for emitting first plane light which can coincide with the first scale line and the third scale line.

3. The coaxial adjustment device of claim 2, wherein, the coaxial adjustment device further comprises a second support and a second indicator mounted on the second support; the second indicator is spaced apart from the lens group along the second direction, and the second indicator is used for emitting second plane light which can coincide with the second scale line and the fourth scale line.

4. The coaxial adjustment device of claim 2, wherein, the coaxial adjustment device further comprises a first connecting member penetrating one end of the first indicator along the third direction and connected to the first support; the coaxial adjustment device further comprises a second connecting member spaced apart from the first connecting member, the second connecting member penetrating one end of the first indicator along the first direction and connected to the first support.

5. The coaxial adjustment device of claim 4, wherein, the first connecting member and the second connecting member each comprise a head portion and a rod portion connected to the head portion, and one end of the rod portion away from the head portion penetrates the first indicator and is connected to the first support, and the rod portion is movably connected to the first indicator; the rod portion is sleeved with an elastic member, and the elastic member abuts between the head portion and the first indicator to press the first indicator against the first support.

6. The coaxial adjustment device of claim 5, wherein, the coaxial adjustment device further comprises a ball, the ball being provided between the first support and the first indicator and being rotatably connected thereto. The first support is provided with a first sliding groove extending along a first direction and a second sliding groove extending along a third direction; the coaxial adjusting device further comprises a first ball head column and a second ball head column arranged at intervals, one end of the first ball head column is slidably connected to the first sliding groove through the first indicator, one end of the second ball head column is slidably connected to the second sliding groove through the first indicator, and the first ball head column and the second ball head column are both threadedly connected to the first indicator; The ball and the second ball head column jointly form a second rotation axis, the first ball head column rotates around its own axis and can drive the first indicator to deflect around the second rotation axis relative to the first support at one end along the first direction; The ball and the first ball head column jointly form a first rotation axis, the second ball head column rotates around its own axis and can drive the first indicator to deflect around the first rotation axis relative to the first support at one end along the third direction.

7. The coaxial adjustment device of claim 1, wherein, The lens mounting seat comprises a movable plate connected to the lens group, a fixed plate connected to the movable plate, and a plurality of first adjusting columns, one end of the first adjusting column is connected to the fixed plate, the other end abuts against the movable plate, and the first adjusting column is used for adjusting the distance between the movable plate and the fixed plate along a second direction.

8. The coaxial adjustment device of claim 7, wherein, The lens mounting seat further comprises a plurality of second adjusting columns, one end of the second adjusting column is connected to the movable plate, the other end abuts against the fixed plate, and the second adjusting column is used for adjusting the distance between the movable plate and the fixed plate along a third direction.

9. A laser processing apparatus characterized by comprising: The coaxial adjusting device comprises any one of claims 1-8.

10. A coaxial adjustment method, characterized by, The coaxial adjusting device based on any one of claims 1-8 comprises the following steps: Adjust the light-emitting angle of the first planar light so that the first planar light coincides with the first scale line of the adjusting reference member on the opposite two sides; Adjust the light-emitting angle of the second planar light so that the second planar light coincides with the second scale line of the adjusting reference member on the opposite two sides; Adjust the angle of the lens group so that the third scale line of the lens group is coplanar with the first planar light; Adjust the angle of the lens group so that the fourth scale line of the lens group is coplanar with the second planar light.

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