Array flow shaping apparatus
By using acousto-optical beam splitters in the array flight forming equipment for independent control of laser beam splitting and forming optical systems, the problem of high volume and cost of laser systems in existing equipment is solved, and the volume compression and cost reduction of the equipment are achieved.
Patent Information
- Application Number
- CN202421878436.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-05
AI Technical Summary
When existing array flight forming equipment realizes large-format forming of multi-optical paths, the size and cost of the laser system are relatively high, and the total volume of the equipment is large, which has the problem of high space occupancy.
Using an array flight forming device including a laser light source, a beam splitter system and a forming optical system, the laser is divided into multiple beam splitting lasers through an acousto-optical beam splitter, and independently controlled and shaped and printed in the forming optical system.
It reduces the total volume and cost of the equipment, improves the laser integration of the system, reduces the size of the gantry, and enhances the independence and flexibility of the forming optical system.
Smart Images
Figure CN222957520U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of additive manufacturing, and relates to a forming device with multiple optical paths and a large format, in particular to an array flying forming device. Background Art
[0002] With the upgrading of demands in the metal 3D printing industry, it is often necessary to integrate multiple groups of optical paths to achieve large-format printing and forming. The array flying device is a printing device that mounts a laser optical system on a moving gantry to complete large-format forming. When using gantry flying printing, the volume of the laser system on the gantry directly affects the efficiency of multi-light cooperation; moreover, when there are too many laser optical paths, each group of laser scanning systems is controlled by an independent laser. When the number of optical paths increases, not only is the cost huge, but also the overall volume of the device increases, which has obvious disadvantages. Summary of the Utility Model
[0003] In order to solve the above technical problems in the background art, the utility model provides an array flying forming device that can not only reduce costs but also compress the space occupancy rate.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] An array flying forming device, characterized in that: the array flying forming device includes a laser light source, a beam splitter system, and a forming optical system; the laser light source generates outgoing laser; the beam splitter system is arranged on the optical path where the outgoing laser is located; the outgoing laser forms split laser after passing through the beam splitter system; the forming optical system is arranged on the optical path where the split laser is located and can translate freely on the working surface; the forming optical system is at least two groups; the number of the forming optical systems matches the number of the split laser.
[0006] The above beam splitter system includes one or more beam splitters, and the multiple beam splitters form a cascaded beam splitter.
[0007] The above beam splitter is an acousto-optic beam splitter.
[0008] The above beam splitter is a multi-frequency acousto-optic beam splitter.
[0009] The above acousto-optic beam splitter includes a quartz acousto-optic crystal and a piezoelectric transducer attached to the quartz acousto-optic crystal; the outgoing laser is incident on the quartz acousto-optic crystal to form incident laser; the piezoelectric transducer converts an electrical signal into acoustic wave signals of different frequencies and loads the acoustic wave signals of different frequencies onto the quartz acousto-optic crystal; the incident laser exits from the quartz acousto-optic crystal at least two split lasers under the action of the acoustic wave signals of different frequencies.
[0010] The above array flying forming device further includes a reflection system; the reflection system and the forming optical system are sequentially arranged on the optical path of the split laser from front to back, and the split laser enters the corresponding forming optical system after being reflected by the reflection system.
[0011] The above array flying forming device further includes a gantry; the forming optical system is placed on the gantry; the gantry drives the forming optical system to freely translate along the working width.
[0012] The above gantry freely translates along the X direction or the Y direction of the working width.
[0013] The above array flying forming device further includes a running guide rail parallel to the working width in a line-plane manner; the gantry is placed on the running guide rail and freely translates along the axial direction of the running guide rail in the X direction or the Y direction of the working width.
[0014] The above running guide rail is one or two parallel to each other.
[0015] The advantages of the present utility model are:
[0016] The present utility model provides an array flying forming device, including a laser light source, a beam splitter system and a forming optical system; the laser light source generates output laser; the beam splitter system is arranged on the optical path of the output laser; the output laser forms split laser after passing through the beam splitter system; the forming optical system is arranged on the optical path of the split laser and freely translates on the working width; the forming optical system is at least two groups; the number of the forming optical systems matches the number of the split lasers. The present utility model uses a high-power fiber laser as the input. The laser output from the fiber laser is first split by a beam splitter and then enters each forming optical system, which can not only reduce costs but also compress space. At the same time, since the present utility model adopts a beam splitter, it can not only reduce the volume of the forming device, but also the forming optical system mounted on the gantry is less affected by mechanical movement, and can also independently perform on-off control and power control on each branch laser. The present utility model can be applied not only to flying forming devices but also to conventional multi-light forming devices. Description of the Drawings
[0017] Figure 1 is a schematic structural diagram of the array flying forming device provided by the present utility model;
[0018] Figure 2 is a schematic structural diagram of the multi-frequency acousto-optic beam splitter adopted by the present utility model;
[0019] Figure 3 is a schematic structural diagram of the cascaded acousto-optic beam splitter adopted by the present utility model;
[0020] Wherein:
[0021] 1 - Laser light source; 2 - Acousto-optic beam splitter; 21 - Quartz acousto-optic crystal; 22 - Piezoelectric transducer; 23 - Incident laser; 24 - Split laser; 3 - Reflection system; 4 - Gantry; 5 - Working area; 6 - Running guide rail; 7 - Forming optical system; 8 - Carrying platform. Detailed implementation mode
[0022] See Figure 1 , the present utility model provides an array flying forming device, including a laser light source 1, a beam splitter system and a forming optical system 7; the laser light source 1 generates an outgoing laser; the beam splitter system is arranged on the optical path where the outgoing laser is located; the outgoing laser forms split laser 24 after passing through the beam splitter system; the forming optical system 7 is arranged on the optical path where the split laser 24 is located and can translate freely in the working area 5; the forming optical system 7 is at least two groups; the number of the forming optical system 7 matches the number of the split laser 24.
[0023] The beam splitter system can be a spectroscope, a beam splitting element, an acousto-optic beam splitter 2, a multi-frequency acousto-optic beam splitter or a cascade beam splitter composed of multiple beam splitters. As a preferred solution, the present utility model adopts the acousto-optic beam splitter 2. See Figure 2 And Figure 3 , which are commonly used and can be used as the beam splitters of the present utility model, such as Figure 2 The multi-frequency acousto-optic beam splitter shown and Figure 3 The cascade acousto-optic beam splitter shown. The present utility model preferably uses the acousto-optic beam splitter, considering that compared with the conventional spectroscope or beam splitting element, the acousto-optic beam splitting device can control the power of the split laser 24. Compared with the time-division beam splitting technology, it can perform multi-path laser operations, rather than only working by loading the laser on a certain path. At the same time, for the laser beams of the same source, the beam quality has high consistency, and the forming effects in different regions of the part are consistent.
[0024] Taking Figure 2 The multi-frequency acousto-optic beam splitter shown as an example, this acousto-optic beam splitter 2 includes a quartz acousto-optic crystal 21 and a piezoelectric transducer 22 attached to the quartz acousto-optic crystal 21; the outgoing laser is incident on the quartz acousto-optic crystal 21 and forms incident laser 23; the piezoelectric transducer 22 converts the electrical signal into acoustic wave signals of different frequencies and loads the acoustic wave signals of different frequencies onto the quartz acousto-optic crystal 21; the incident laser 23 exits from the quartz acousto-optic crystal 21 at least two split lasers 24 under the action of the acoustic wave signals of different frequencies. As Figure 2As shown, it is a multi-frequency beam splitter system based on an acousto-optic beam splitter. Since the laser energy to be split is relatively high, a quartz acousto-optic crystal is selected as the working material. When the incident laser 23 is incident on the quartz acousto-optic crystal 21, the piezoelectric transducer 22 converts the electrical signal into acoustic wave signals of different frequencies. After the acoustic wave signals are loaded onto the quartz acousto-optic crystal 21, the laser will undergo the acousto-optic effect to complete deflection. Different frequencies of the acoustic wave signals will cause the light beam to deflect in different directions, thereby achieving the beam splitting effect and finally forming different split lasers 24. By controlling voltage signals of different intensities, the power of the acoustic wave signals generated by the piezoelectric transducer 22 is different, thereby achieving the on / off light and power control of each split laser 24.
[0025] See Figure 3 , the cascaded acousto-optic beam splitter is composed of Figure 2 The multi-frequency acousto-optic beam splitter shown constructs multiple levels Figure 3 As shown is a multi-level beam splitter. Exemplarily, it can be a three-level beam splitter or a beam splitter with more levels. The first split laser 24 is formed by the first-level beam splitter ( Figure 3 The first reference numeral 24 from left to right), the second split laser 24 formed by the second-level beam splitter ( Figure 3 The second reference numeral 24 from left to right), and the third split laser 24 formed by the third-level beam splitter ( Figure 3 The third reference numeral 24 from left to right) and the fourth split laser output in parallel with the third split laser 24 ( Figure 3 The rightmost horizontal arrow, without a reference numeral).
[0026] Figure 2 And Figure 3 When the beam splitters shown are in use, each is an independent and complete acousto-optic beam splitter 2 for controlling laser beam splitting. The split laser 24 after beam splitting can also use a collimating and beam expanding lens and a reflecting mirror, etc. to control the laser direction.
[0027] The array flying forming device provided by the present utility model further includes a reflection system 3; the reflection system 3 can be various reflecting elements, such as a reflecting mirror, etc. The reflection system 3 and the forming optical system 7 are sequentially arranged on the optical path where the split laser 24 is located from front to back. In addition, in order to facilitate better movement of the forming optical system 7, the array flying forming device provided by the present utility model further includes a gantry 4; the forming optical system 7 is placed on the gantry 4; the gantry 4 can freely translate along the working surface 5. The gantry 4 can freely translate along the X direction or the Y direction of the working surface 5. The array flying forming device further includes a running guide rail 6 that forms a line-plane parallel with the working surface 5; the gantry 4 is placed on the running guide rail 6 and can freely translate along the axial direction of the running guide rail 6 in the X direction or the Y direction of the working surface 5. Exemplarily, see Figure 1, the two running guide rails 6 adopted by the utility model are parallel to each other. The combination of the acousto-optic beam splitter and the reflection system 3 used in this implementation can reduce the size of the gantry 4 in the flight axis direction. When the gantry 4 is used in cooperation with flight, the gantry volume can be reduced, and the laser integration degree of the system can be improved.
[0028] The working process of the utility model is as follows: Refer to Figure 1 , the optical path components of the shaping optical system 7 are placed on the flying gantry 4. Exemplarily, they can be arranged on the bearing platform 8 of the gantry 4. The shaping optical system 7 can be limited through the bearing platform 8, and the shaping optical system 7 can move freely along the axial direction of the running guide rail 6. The utility model uses a high-power fiber laser as the laser light source 1 and uses an acousto-optic beam splitter 2 for beam splitting. Among them, the acousto-optic beam splitter 2 utilizes the standing-wave acousto-optic effect to realize the deflection of the laser and achieve the purpose of beam splitting. The split laser enters each shaping optical system 7 after being reflected by the reflection system 3, and then the laser is focused and deflected by means of the cooperation of a galvanometer and a focusing lens or other means, so as to realize the shaping and printing of each shaping optical system 7. Among them, the shaping optical system 7 still adopts an independent control method for control (the control process belongs to the prior art and will not be elaborated here). According to the printing pattern and in cooperation with the movement of the gantry 4, the scanning of the laser is realized, and the laser power of each shaping optical system 7 is controlled by the voltage control signal generated by the piezoelectric transducer 22 in the acousto-optic beam splitter 2 to realize the switching on and off of each split laser and the power control.
Claims
1. An array flight forming device, characterized in that: The array flight forming device comprises a laser light source (1), a beam splitter system and a forming optical system (7); the laser light source (1) generates an output laser; the beam splitter system is arranged on the optical path of the output laser; the output laser forms a split beam laser (24) after passing through the beam splitter system; the forming optical system (7) is arranged on the optical path of the split beam laser (24) and can be freely translated on the working surface (5); the forming optical system (7) is at least two groups; the number of the forming optical systems (7) matches the number of the split beam lasers (24).
2. The array flight forming equipment according to claim 1, characterized in that: The beam splitter system includes one or more beam splitters, and the plurality of beam splitters constitute a cascade beam splitter.
3. The array flight forming device according to claim 2, characterized in that: The beam splitter is an acousto-optic beam splitter (2).
4. The array flight forming device according to claim 3, characterized in that: The beam splitter is a multi-frequency acousto-optic beam splitter.
5. The array flight forming equipment according to claim 4, characterized in that: The acousto-optic beam splitter (2) comprises a quartz acousto-optic crystal (21) and a piezoelectric transducer (22) fitted to the quartz acousto-optic crystal (21); the outgoing laser is incident on the quartz acousto-optic crystal (21) to form an incident laser (23); the piezoelectric transducer (22) converts an electrical signal into an acoustic wave signal of different frequencies and loads the acoustic wave signal of different frequencies to the quartz acousto-optic crystal (21); after the incident laser (23) passes through the quartz acousto-optic crystal (21), under the action of the acoustic wave signals of different frequencies, at least two split laser beams (24) are emitted from the quartz acousto-optic crystal (21).
6. The array flight forming equipment according to claim 5, characterized in that: The array flight forming device also includes a reflection system (3); the reflection system (3) and the forming optical system (7) are sequentially arranged on the optical path where the split beam laser (24) is located.
7. The array flight forming device according to any one of claims 1 to 6, characterized in that: The array flight forming equipment also includes a gantry (4); the forming optical system (7) is placed on the gantry (4); the gantry (4) drives the forming optical system (7) to freely translate along the working surface (5).
8. The array flight forming device according to claim 7, characterized in that: The gantry (4) can freely translate along the X direction or Y direction of the working surface (5).
9. The array flight forming device according to claim 8, characterized in that: The array flight forming equipment also includes a running guide rail (6) which is parallel to the line plane formed with the working surface (5); the gantry (4) is placed on the running guide rail (6) and can freely translate along the axial direction of the running guide rail (6) in the X direction or Y direction of the working surface (5).
10. The array flight forming equipment according to claim 9, characterized in that: The running guide rail (6) is one or two mutually parallel rails.