A special double swing angle head suitable for three-dimensional laser etching processing

Abstract

The application relates to a special double-swing-angle head suitable for three-dimensional laser etching processing, wherein the lower end of a C-swing-angle component is connected with an A-swing-angle component and drives the A-swing-angle component to rotate along a C-axis; the A-swing-angle component is a fork-shaped structure, the etching head mounting seat is arranged between the two forks, the two sides of the etching head mounting seat are connected with an A-swing-rotation shaft and rotate along an A-axis with the A-swing-rotation shaft. The A-swing-rotation shaft is provided with a cantilever structure at one end and is used for mounting a laser support. The laser and the etching head are integrated at the end of the A / C-swing-angle through the A-swing-rotation shaft, the etching head mounting seat and the laser mounting support, synchronous rotation with the A-swing-angle and the C-swing-angle is realized, no relative movement between the laser and the etching head is ensured, external direct connection through an optical fiber is realized, laser transmission quality is ensured, the influence of the external optical fiber on the process accessibility is solved, the possibility of optical fiber damage is greatly reduced, the swing-angle range is large, the structure rigidity is good, the positioning precision is high, and the high-precision three-dimensional laser etching process requirements can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of special processing, in particular to a special double swing angle head suitable for three-dimensional laser etching processing. BACKGROUND

[0002] The basic principle of laser etching is to focus a small power laser beam with high beam quality into a very small spot, forming a very high power density at the focal point, so that the material is vaporized in an instant, forming holes, slots, grooves, etc. In order to obtain good etching size accuracy and processing quality, laser etching processing has very high requirements for laser beam quality and positioning accuracy of the moving carrier. The integration of laser etching technology and high-precision five-axis CNC machine tools successfully expands laser processing from two-dimensional plane to three-dimensional complex surface texture processing, realizing high-precision three-dimensional laser etching of large parts.

[0003] The integration of laser processing technology and five-axis CNC machine tools mainly faces the technical difficulty of the integration design of the etching head and the laser and the double swing angle head. Among them, how to realize the transmission of the laser emitted by the laser to the etching head through the swing angle mechanism is the key problem to be solved. Because the fiber bending radius is large, and the internal structure of the swing angle head is complex and the space is compact, it is difficult to provide sufficient wiring space, and the optical fiber cable cannot be transmitted from the outside of the swing angle head to the etching head at the end together with the flexible cable pipeline inside the swing angle head.

[0004] At present, there are generally two kinds of existing solutions: one is to place the laser on the ground or the machine tool, and directly connect the etching head through a long optical fiber walk line. The optical fiber needs to be reserved with sufficient length to meet the requirements of the stroke and the swing angle range. For the case of large stroke and large swing angle range (such as C swing angle ± 360°), the optical fiber needs to be reserved with a long length, and the optical fiber is prone to friction and interference with the machine tool or the workpiece during movement, which easily causes damage to the optical fiber, seriously affecting the equipment processing accessibility, operation reliability and safety. The other solution is to use hard light path transmission inside the swing angle head, and complete the reversing transmission of the laser along the two swing angle axes by installing several mirrors inside the swing angle head. In order to ensure the quality of laser transmission, the installation accuracy of the mirrors and the swing angle movement accuracy are required to be very high, and the light path adjustment is difficult. Especially for the etching head with built-in galvanometer scanning, the addition of two-axis deflection galvanometer leads to greater influence of factors such as the spatial attitude error of multiple mirrors, the swing angle transmission error, and the vibration during transmission on the beam transmission quality and etching precision, making the light path adjustment extremely difficult, and it is very difficult to meet the requirements of high-precision laser etching on beam quality. SUMMARY

[0005] (1) Technical problems to be solved

[0006] The embodiment of the present application provides a special double swing angle head suitable for three-dimensional laser etching processing, laser and etching head are integrated and installed in A / C swing angle structure, there is no relative motion between the laser and the etching head, the laser can be directly connected outside through an optical fiber, laser transmission quality is ensured, and the technical problem of optical fiber wiring is solved.

[0007] (2) Technical scheme

[0008] The embodiment of the present application provides a special double swing angle head suitable for three-dimensional laser etching processing, laser and etching head are integrated and installed in A / C swing angle structure, there is no relative motion between the laser and the etching head, the laser can be directly connected outside through an optical fiber, laser transmission quality is ensured, and the technical problem of optical fiber wiring is solved.

[0009] Further, the C swing component includes a C swing motor, a C swing rotating shaft and a C swing rotary table bearing, the C swing rotating shaft is arranged on a machine tool ram and rotationally connected through the C swing rotary table bearing, the C swing motor is fixedly arranged on the machine tool ram and drives the C swing rotating shaft to rotate, and the C swing rotating shaft is connected with the top end of the A swing component.

[0010] Further, the C swing motor is connected with a C swing reducer and is reduced through the C swing reducer, an output shaft of the C swing reducer is connected with the C swing rotating shaft through a C swing gear pair and is driven.

[0011] Further, the C swing rotating shaft is provided with a C swing angle encoder, the C swing angle encoder and the C swing motor form full-closed loop control through a servo system.

[0012] Further, the C swing rotating shaft is of a hollow structure to facilitate wiring of communication control, power supply, air cooling and water cooling pipelines.

[0013] Further, the A swing component includes an A swing box body, an A swing motor and an A swing rotary table bearing, the A swing rotating shaft is connected with the A swing box body through the A swing rotary table bearing, the A swing motor is arranged in the A swing box body and drives the A swing rotating shaft to drive the etching head mounting seat to rotate.

[0014] Further, the A swing motor is connected with an A swing reducer and is reduced through the A swing reducer, an output shaft of the A swing reducer is connected with the A swing rotating shaft through an A swing gear pair and is driven.

[0015] Further, the A swing rotating shaft is provided with an A swing angle encoder, and the A swing motor and the A swing angle encoder form a full closed loop control through a servo system.

[0016] Further, the A swing rotating shaft is a hollow structure to facilitate the wiring of communication control, power supply, air cooling and water cooling pipelines.

[0017] Further, the laser mounting bracket comprises a side mounting plate and a bottom connecting plate, one side of the side mounting plate is connected with one end of the A swing rotating shaft through an A swing transition flange, the other side of the side mounting plate is connected with a laser, and one end of the side mounting plate is connected with the etching head mounting seat through the bottom connecting plate.

[0018] (3)Beneficial effects

[0019] In summary, the A / C swing angle structure is adopted to integrate the laser and the etching head, the etching head mounting seat and the laser mounting bracket are synchronously rotated at one end of the A swing angle component through the A swing rotating shaft, no relative movement is generated between the laser and the etching head, the external optical fiber can be directly connected through the optical fiber, the laser transmission quality is ensured, the influence of the external optical fiber on the machining accessibility is solved, the possibility of optical fiber damage is greatly reduced, the swing angle range is large, the structure rigidity is good, the positioning precision is high, the laser transmission is stable and reliable, and the high-precision three-dimensional laser etching process requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] Figure 1 It is a three-dimensional structure schematic diagram of a special double swing angle head suitable for three-dimensional laser etching machining;

[0022] Figure 2 It is a sectional structure schematic diagram of a special double swing angle head suitable for three-dimensional laser etching machining;

[0023] In the drawings: 1, C swing angle component; 2, A swing angle component; 3, etching head mounting seat; 4, laser mounting bracket; 5, C swing motor; 6, C swing angle encoder; 7, C swing reducer; 8, C swing gear pair; 9, C swing rotating shaft; 10, C swing rotary table bearing; 11, A swing box body; 12, A swing reducer; 13, A swing motor; 14, A swing gear pair; 15, A swing rotary table bearing; 16, A swing angle encoder; 17, A swing rotating shaft; 18, A swing transition flange; 19, laser; 20, etching head. Detailed Implementation

[0024] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments, and any modifications, substitutions and improvements to the parts, components and connection methods are covered without departing from the spirit of the present invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Please refer to Figure 1 and Figure 2 This invention provides a dedicated dual-angle head suitable for three-dimensional laser etching, comprising: a C-angle component 1, an A-angle component 2, an etching head mounting base 3, a laser mounting bracket 4, and an A-angle rotation axis 17. The lower end of the C-angle component 1 is connected to the A-angle component 2, and the C-angle component 1 drives the A-angle component 2 to rotate. The A-angle component 2 has a fork-shaped structure, and the etching head mounting base 3 is disposed within the fork-shaped opening via the A-angle rotation axis 17 and rotates with the A-angle rotation axis. One end of the A-angle rotation axis 17 is a cantilever structure, passing through the A-angle component 2 and connecting to the laser mounting bracket 4. The etching head mounting base 3 is used for embedded mounting of the etching head 20, and the laser mounting bracket 4 is used for mounting the laser 19. The etching head mounting base 3 has a maintenance window on one side for easy debugging of the internal optical path and components of the etching head 20, and a wiring interface on the other side for easy connection and fixation of the fiber optic cable between the laser 19 and the etching head 20, facilitating maintenance. The etching head mounting base 3 and the laser mounting bracket 4 rotate synchronously at one end of the A-swing component 2 via the A-swing rotation axis 17, thus ensuring no relative movement between the laser 19 and the etching head 20. The laser 19 and the etching head 20 can be directly connected externally via optical fiber, which not only ensures the quality and stability of laser transmission, but also solves the problem of the impact of external optical fiber on processing accessibility, greatly reducing the possibility of optical fiber breakage. Moreover, the A / C swing angle structure has a large swing angle range, good structural rigidity, and high positioning accuracy, which can meet the requirements of high-precision three-dimensional laser etching process.

[0027] In some embodiments, the C swing angle component 1 comprises a C swing motor 5, a C swing rotating shaft 9, and a C swing rotary table bearing 10, the C swing rotating shaft 9 is arranged on the machine tool ram and is rotatably connected through the C swing rotary table bearing 10, the C swing motor 5 is fixedly arranged on the machine tool ram and drives the C swing rotating shaft 9 to rotate, and the C swing rotating shaft 9 is connected with the top end of the A swing angle component 2, so that the A swing angle component 2 rotates when the C swing rotating shaft 9 rotates.

[0028] In some embodiments, the C swing motor 5 is connected with a C swing reducer 7 and is decelerated through the C swing reducer 7, an output shaft of the C swing reducer 7 is connected with the C swing rotating shaft 9 through a C swing gear pair 8 and is driven, a double-gear structure is realized through the C swing reducer 7 and the C swing gear pair 8, transmission clearance is eliminated, and rotation control is more accurate.

[0029] In some embodiments, the C swing rotating shaft 9 is provided with a C swing angle encoder 6, the C swing angle encoder 6 and the C swing motor 5 form a full-closed loop control through a servo system, and the C swing motor 5 is a servo motor with high positioning accuracy.

[0030] In some embodiments, the C swing rotating shaft 9 is a hollow structure to facilitate wiring of communication control, power supply, air cooling, water cooling and the like, and the communication control, power supply, air cooling, water cooling and the like can be wired and arranged through the hollow structure of the C swing rotating shaft 9, so as to avoid pipeline leakage and motion interference.

[0031] In some embodiments, the A swing angle component 2 comprises an A swing box body 11, an A swing motor 13, and an A swing rotary table bearing 15, both ends of the A swing rotating shaft 17 can be connected with the A swing box body 11 through two A swing rotary table bearings 15, respectively, and the rotary table bearings are symmetrically arranged on the left and right sides, have good support rigidity, high rotation accuracy, and low rotation resistance, the A swing motor 13 is arranged in the A swing box body 11 and drives the A swing rotating shaft 17 to rotate, and the driving form is not limited to gear transmission, but can also be belt transmission, chain transmission and the like.

[0032] In some embodiments, the A swing motor 13 is connected with an A swing reducer 12 and is decelerated through the A swing reducer 12, an output shaft of the A swing reducer 12 is connected with the A swing rotating shaft 17 through an A swing gear pair 14 and is driven, a double-gear structure is realized through the A swing reducer 12 and the A swing gear pair 14, transmission clearance is eliminated, and rotation control is more accurate.

[0033] In some embodiments, the A-swing rotating shaft 17 is provided with an A-swing angle encoder 16, and the A-swing motor 13 forms a full closed loop control with the A-swing angle encoder 16 through a servo system. The A-swing motor 13 is a servo motor, and has high positioning accuracy.

[0034] In some embodiments, the A-swing rotating shaft 17 is a hollow structure to facilitate the wiring of communication control, power supply, air cooling, and water cooling pipelines. The communication control, power supply, air cooling, and water cooling pipelines can pass through the hollow structure of the A-swing rotating shaft 17 for wiring arrangement, avoiding pipeline leakage and motion interference.

[0035] In some embodiments, the laser mounting bracket 4 includes a side mounting plate and a bottom connecting plate. One side of the side mounting plate is connected with one end of the A-swing rotating shaft 17 through an A-swing transition flange plate 18, and the other side of the side mounting plate is connected with a laser 19. One end of the side mounting plate is connected with the etching head mounting seat 3 through the bottom connecting plate, forming a closed frame structure, which has good rigidity and can better strengthen the rigid connection between the laser mounting bracket 4 and the etching head mounting seat 3, and realize the synchronous rotation of the etching head mounting seat 3 and the laser mounting bracket 4.

[0036] It should be noted that each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments. The present application is not limited to the specific steps and structures described above and shown in the drawings. Moreover, for the sake of brevity, detailed description of known methods and techniques is omitted.

[0037] The above only describes the embodiments of the present application, and does not limit the present application. The present application can have various modifications and changes for those skilled in the art without departing from the scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A dedicated double-swivel head suitable for three-dimensional laser etching, characterized in that, include: C-angle component, A-angle component, etching head mounting base, laser mounting bracket, and A-angle rotation axis; The etching head mounting base is used for embedded mounting of the etching head, and the laser mounting bracket is used for mounting the laser. The lower end of the C-angle component is connected to the A-angle component, and drives the A-angle component to rotate along the C-axis; The A-swing angle component has a fork-shaped structure. The etching head mounting base is set in the fork-shaped opening through the A-swing rotation axis, and the etching head mounting base is located between the two forks. The two sides of the etching head mounting base are connected to the A-swing rotation axis and rotate along the A-axis with the A-swing rotation axis. One end of the A-swing rotation axis is a cantilever structure and passes through the A-swing angle component to connect with the laser mounting bracket. The laser mounting bracket includes a side mounting plate and a bottom connecting plate. One side of the side mounting plate is connected to one end of the A-pendulum rotation axis through an A-pendulum transition flange, and the other side of the side mounting plate is connected to the laser. One end of the side mounting plate is connected to the etching head mounting base through the bottom connecting plate, forming a closed frame structure. The laser and the etching head are integrated at the end of the A / C swing angle by the A-swing rotation axis, the etching head mounting base, and the laser mounting bracket, and rotate synchronously with the A and C swing angles to ensure that there is no relative movement between the laser and the etching head; The A-swing component includes an A-swing housing, an A-swing motor, and A-swing turntable bearings symmetrically arranged on the left and right sides. The two ends of the A-swing rotation shaft are respectively connected to the A-swing housing through the two A-swing turntable bearings. The A-swing motor is located inside the A-swing housing and drives the A-swing rotation shaft to drive the etching head mounting base and the laser mounting bracket to rotate synchronously. The A-pendulum rotation axis is a hollow structure to facilitate the routing of communication control, power supply, air cooling, and water cooling pipelines.

2. The specialized double-swivel head for three-dimensional laser etching as described in claim 1, characterized in that, The C-swing angle component includes a C-swing motor, a C-swing rotating shaft, and a C-swing turntable bearing. The C-swing rotating shaft is mounted on the machine tool slide and is rotatably connected through the C-swing turntable bearing. The C-swing motor is fixedly mounted on the machine tool slide and drives the C-swing rotating shaft to rotate. The C-swing rotating shaft is connected to the top end of the A-swing angle component.

3. A special double-swivel head for three-dimensional laser etching as described in claim 2, characterized in that, The C-pendulum motor is connected to the C-pendulum reducer and is decelerated by the C-pendulum reducer. The output shaft of the C-pendulum reducer is connected to the C-pendulum rotation shaft through the C-pendulum gear pair and performs transmission.

4. A special double-swivel head for three-dimensional laser etching as described in claim 2, characterized in that, A C-pendulum angle encoder is installed on the C-pendulum rotation shaft, and the C-pendulum angle encoder and the C-pendulum motor form a closed-loop control through a servo system.

5. A special double-swivel head for three-dimensional laser etching as described in claim 2, characterized in that, The C-shaped pendulum rotation axis has a hollow structure to facilitate the routing of communication control, power supply, air cooling, and water cooling pipelines.

6. A dedicated double-swivel head for three-dimensional laser etching as described in claim 1, characterized in that, The A-pendulum motor is connected to the A-pendulum reducer and is decelerated by the A-pendulum reducer. The output shaft of the A-pendulum reducer is connected to the A-pendulum rotation shaft through the A-pendulum gear pair and performs transmission.

7. A dedicated double-swivel head for three-dimensional laser etching as described in claim 1, characterized in that, An angle encoder for the A-pendulum is installed on the rotation shaft of the A-pendulum, and the angle encoder for the A-pendulum and the A-pendulum motor form a closed-loop control through a servo system.

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