Water-jet guided laser automatic coupling adjusting device

Abstract

The utility model relates to the technical field of water-jet guided laser processing, in particular to a water-jet guided laser automatic coupling adjusting device which comprises a CCD camera, a laser head support, a laser head, a vertical position adjusting table, a vertical support, a coupling device, an XY moving platform and a workbench. The position of a laser focusing focal spot is adjusted in the vertical direction by driving a Z-direction stepping motor of the vertical adjusting table, and the coupling device moves in the horizontal plane by driving an X-direction stepping motor and a Y-direction stepping motor of the XY moving platform; a coupling image collected by the CCD camera is processed by using numerical control software to obtain a motion parameter of coupling adjustment, and a numerical control system drives a stepping motor to move according to the motion parameter of coupling adjustment to realize automatic coupling adjustment; according to the utility model, the structure of the water-guided laser coupling adjusting device is simplified, the adjusting difficulty is reduced, and the automation degree is improved.

Description

Technical Field

[0001] The utility model relates to the field of water-conducting laser processing, in particular to a water-conducting laser automatic coupling adjustment device. Background Art

[0002] Water-guided laser processing technology uses the principle of total reflection of laser in water beam fiber. The water beam fiber guides the laser to the surface of the workpiece and uses the laser energy to process the workpiece. It has the advantages of small heat-affected zone and high surface quality. In recent years, water-guided laser processing technology has been widely used in aerospace manufacturing, medical device manufacturing and other fields. Many scientific research institutions at home and abroad have studied the coupling adjustment technology of water-guided laser processing technology, but the coupling adjustment process of existing research is mainly manual operation, the coupling adjustment device has a complex structure, the coupling adjustment process is complex, and the degree of automation is low. Utility Model Content

[0003] In view of the shortcomings of the existing water-guided laser coupling adjustment technology, including the complex structure of the coupling adjustment device, the complex coupling adjustment process, and the low degree of automation, the utility model aims to propose a water-guided laser automatic coupling adjustment device, which automatically completes the coupling adjustment work by adopting innovative mechanical structure, image processing technology, automatic control technology, etc.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: a water-guided laser automatic coupling adjustment device, which is composed of a CCD camera, a laser head bracket, a laser head, a vertical position adjustment platform, a vertical bracket, a coupling device, an XY moving platform, and a workbench. The CCD camera is mounted on the laser head bracket, the laser head is mounted on the laser head bracket, the laser head bracket is mounted on the vertical position adjustment platform, the vertical position adjustment platform is mounted on the vertical bracket, the XY moving platform is mounted on the vertical bracket, the coupling device is mounted on the XY moving platform, and the vertical bracket is mounted on the workbench;

[0005] The XY mobile platform is driven by a stepper motor, which is controlled by a numerical control system. The numerical control software processes the coupled image collected by the CCD camera and generates a motion numerical control command, which is sent to the numerical control system.

[0006] The vertical position adjustment platform adopts a structure in which a ball screw and a linear guide are combined, and is driven by a stepper motor, which is controlled by a numerical control system;

[0007] The CCD camera adopts a monocular camera with a focusing lens and a protective lens;

[0008] The laser head bracket is installed with a dichroic mirror and a focusing lens, so that the focusing laser axis inside the laser head bracket is parallel to the CCD camera detection light path axis. The laser head bracket is installed on a vertical position adjustment table, so that the CCD camera and laser head can move in the vertical direction at the same time.

[0009] Compared with the existing technology, the utility model has the following beneficial effects: the utility model proposes a water-guided laser automatic coupling adjustment device, which comprehensively applies innovative mechanical structure, image processing technology, numerical control technology, etc., and can complete the water-guided laser automatic coupling alignment adjustment work. The water-guided laser automatic coupling adjustment device has the advantages of simple and compact structure, convenient adjustment, and high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Shown is a structural schematic diagram of a water-guided laser automatic coupling adjustment device of the utility model.

[0011] Figure 2 The figure shows the structure diagram after the coupling device and the XY moving platform are assembled.

[0012] In the figure, 1. CCD camera, 2. laser head bracket, 3. laser head, 4. vertical position adjustment table, 5. vertical bracket, 6. coupling device, 7. XY moving platform, 8. workbench. DETAILED DESCRIPTION

[0013] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0014] As attached Figure 1 As shown, the water-guided laser automatic coupling adjustment device proposed in the embodiment of the utility model is composed of a CCD camera 1, a laser head bracket 2, a laser head 3, a vertical position adjustment platform 4, a vertical bracket 5, a coupling device 6, an XY moving platform 7, and a workbench 8.

[0015] The CCD camera 1 and the laser head 3 are mounted and fixed on the laser head bracket 2, the CCD camera 1 is used to collect the coupled image, and the laser head 3 is used to generate a focused laser spot;

[0016] The laser head bracket 2 is mounted on a vertical position adjustment platform 4. The vertical position adjustment platform 4 is driven by a stepping motor to move in the vertical direction. The vertical position adjustment platform 4 can be moved to adjust the position of the focused laser spot in the vertical direction.

[0017] The vertical position adjustment platform 4 is mounted on the vertical support 5;

[0018] like Figure 2 As shown, the coupling device 6 is mounted and fixed on the cantilever plate of the XY moving platform 7;

[0019] The XY moving platform 7 is installed and fixed on the vertical bracket 5;

[0020] The vertical support 5 is installed and fixed on the workbench 8;

[0021] The XY mobile platform 7 is moved in the horizontal plane by an X-axis stepper motor and a Y-axis stepper motor. The XY mobile platform 7 adopts a transmission mode of a slider, a ball screw, a stepper motor, and a linear guide rail combination. The XY mobile platform 7 is controlled by a numerical control system to drive the coupling device 6 on the XY mobile platform 7 to move and perform coupling adjustment. After the numerical control software processes the coupling image, it automatically generates a numerical control command for automatic coupling adjustment and sends it to the numerical control system.

[0022] The CCD camera 1 adopts a monocular camera with a focusing lens and a protective lens;

[0023] The laser head bracket 2 is installed with a dichroic mirror and a focusing lens, so that the focusing laser axis inside the laser head bracket 2 is parallel to the detection optical path axis of the CCD camera 1. The laser head bracket 2 is installed on the vertical position adjustment table 4, so that the CCD camera 1 and laser head 2 installed on the laser head bracket 2 can move in the vertical direction at the same time.

[0024] When in use, first adjust the vertical position of the vertical position adjustment table 4 so that the laser focus spot is located on the coupling image surface of the coupling device; then adjust the lens of the CCD camera 1 so that the CCD camera 1 can capture a clear coupling image; after using the CCD camera 1 to capture the coupling image of the coupling device 6, the coupling image data is transmitted to the numerical control software for processing; after the numerical control software processes the coupling image data, it sends a numerical control command to the numerical control system according to the processing result, and the numerical control system controls the movement of the X-axis stepper motor and the Y-axis stepper motor; the stepper motor drives the XY moving platform 7 to move horizontally, and the coupling device 6 installed on the XY moving platform 7 moves with the XY moving platform 7, so as to realize the automatic coupling adjustment of the laser focus spot and the nozzle hole in the XY plane; the effectiveness and accuracy of the coupling alignment are judged by observing the coupling alignment picture of the laser focus spot and the nozzle hole.

[0025] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A water-guided laser automatic coupling adjustment device, characterized in that: The invention comprises a CCD camera (1), a laser head bracket (2), a laser head (3), a vertical position adjustment platform (4), a vertical bracket (5), a coupling device (6), an XY moving platform (7), and a workbench (8); the coupling device (6) is mounted on the cantilever plate of the XY moving platform (7); the CCD camera (1) is mounted on the laser head bracket (2); the laser head (3) is mounted on the laser head bracket (2); the laser head bracket (2) is mounted on the vertical position adjustment platform (4); the vertical position adjustment platform (4) is mounted on the vertical bracket (5); the XY moving platform (7) is mounted on the vertical bracket (5); the vertical bracket (5) is mounted on the workbench (8); the movement of the vertical position adjustment platform (4) and the movement of the XY moving platform (7) are controlled by a numerical control system.

2. According to claim 1, a water-guided laser automatic coupling adjustment device is characterized in that The XY moving platform (7) is driven by a stepper motor, which is controlled by a numerical control system. The numerical control software processes the coupling image collected by the CCD camera (1) and generates a motion numerical control command, which is sent to the numerical control system.

3. The water-guided laser automatic coupling adjustment device according to claim 1, characterized in that The vertical position adjustment platform (4) adopts a structural form of a ball screw and a linear guide rail combination, and is driven by a stepping motor, which is controlled by a numerical control system.

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