Tool structure applied to beam shaping

Abstract

The utility model provides a tool structure applied to beam shaping, which comprises an optical fiber head, an optical fiber frame, an optical fiber frame mounting plate, a beam expander, a beam expander mounting plate, a shaper, a shaper mounting plate, a galvanometer mounting plate, a galvanometer and a connecting rod, the other end of the connecting rod is arranged on the shaper mounting plate, the connecting rod is sleeved with the beam expander mounting plate, and the beam expander is located between the optical fiber frame mounting plate and the beam expander mounting plate; the optical fiber head is arranged on the optical fiber frame mounting plate through the optical fiber frame, one end of the beam expander is arranged on the optical fiber frame mounting plate, and the other end of the beam expander is arranged on the beam expander mounting plate. The optical fiber head emits laser, the laser enters the beam expander to be expanded, the expanded laser enters the shaper to form flat-top light, the formed flat-top light enters the galvanometer, the galvanometer scans a machining face through the flat-top light, and 3D printing of metal is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of flat-top light shaping devices, in particular to a tooling structure used for light beam shaping. Background Art

[0002] In metal 3D printing technology, the SLM process principle is the main technical solution in the current industry. Its principle is to quickly melt the preset metal powder through laser scanning to directly obtain parts of any shape, with a density of more than 99.9%. The light beam is emitted from the laser, and the beam is reflected to the platform through the galvanometer system for layer-by-layer melting. After each layer of melting is completed, the printed part is lowered layer by layer until the entire part is printed. The SLM process technology can manufacture molded parts with complex structure, metallurgical bonding, dense organization, high dimensional accuracy and good mechanical properties. The mechanical performance indicators of molded parts are better than those of castings, and can even reach the level of forgings.

[0003] As for contemporary manufacturing technology, with the increasing demands, additive manufacturing has an increasing demand for various types of beam shapes with non-Gaussian energy distributions, and flat-top light has gradually become a major focus of attention due to its uniform energy distribution and large spot area. The realization of flat-top light is mainly divided into two ways: the laser itself outputs flat-top light, and the output beam passes through a shaper in space to form a flat-top light. The shapers in this way of forming a flat-top light through a shaper in space are divided into many types, including non-spherical shaping, spherical shaping, DOE shaping, etc. Among them, the DOE shaper has very high requirements for the coaxiality of the optical path. If an adjustment device is added, it will lead to cumbersome tooling, and once the adjustment device becomes loose, the entire workpiece printing will be scrapped.

[0004] Therefore, for the flat-top light shaper structure, designing an assembly structure that can ensure high coaxiality of the structure without the need to adjust the structure is a key factor in improving the stable output of the flat-top light. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a tooling structure for beam shaping, which is used to solve the problems of poor stability, difficulty in adjusting coaxiality, and complicated tooling caused by installing the adjustment device that are easy to occur in the prior art using the DOE shaper.

[0006] To achieve the above-mentioned purpose, the utility model provides a tooling structure for beam shaping, including an optical fiber head, an optical fiber rack, an optical fiber rack mounting plate, a beam expander, a beam expander mounting plate, a shaper, a shaper mounting plate, a galvanometer mounting plate, a galvanometer, and a connecting rod, one end of the connecting rod is arranged on the optical fiber rack mounting plate, the other end of the connecting rod is arranged on the shaper mounting plate, the beam expander mounting plate is sleeved on the connecting rod, and the beam expander is located between the optical fiber rack mounting plate and the beam expander mounting plate; the optical fiber head is arranged on the optical fiber rack mounting plate through the optical fiber rack, one end of the beam expander is arranged on the optical fiber rack mounting plate, and the other end of the beam expander is arranged on the beam expander mounting plate; the shaper is arranged on the shaper mounting plate, the shaper mounting plate is fixedly connected to the galvanometer mounting plate, and the galvanometer is arranged on the galvanometer mounting plate; the center lines of the optical fiber head, the beam expander, the shaper, and the galvanometer coincide with each other.

[0007] Preferably, the light input end of the beam expander is connected to the optical fiber rack mounting plate by means of threads, and the light output end of the beam expander is connected to the beam expander mounting plate by means of threads.

[0008] Preferably, the fiber rack mounting plate, the beam expander mounting plate, and the shaper mounting plate are all provided with a plurality of connection holes, the plurality of connection holes of the three are aligned with each other, and the connection rods are passed through the connection holes of the three.

[0009] Preferably, screw threads are provided on the outer circumferential surfaces at both ends of the connecting rod, and internal threads are provided on the connecting holes on the fiber optic rack mounting plate and the shaper mounting plate. The two ends of the connecting rod are respectively fastened to the fiber optic rack mounting plate and the shaper mounting plate through screw threads and internal threads; and limiting members are provided on both sides of the beam expander mounting plate to limit the position of the beam expander mounting plate on the connecting rod.

[0010] Preferably, the number of connecting holes on the fiber rack mounting plate, the beam expander mounting plate, and the shaper mounting plate are three, and the line connecting the centers of the three connecting holes is a triangle; the number of the connecting rods is three.

[0011] Preferably, the galvanometer mounting plate is an L-shaped plate, the shaper mounting plate is fixedly connected to the vertical surface of the L-shaped plate, and the galvanometer is placed on the horizontal surface of the L-shaped plate.

[0012] As described above, the tooling structure for beam shaping according to the present invention has the following beneficial effects:

[0013] The utility model relates to a tooling structure used for beam shaping, in which an optical fiber head emits laser, and the laser enters a beam expander for beam expansion. After beam expansion, the laser enters a shaper to form a flat-top light, and the formed flat-top light enters a galvanometer. The galvanometer uses the flat-top light to scan the processing surface to complete the 3D printing of metal. In the utility model, the optical fiber frame mounting plate, the shaper mounting plate, and the beam expander mounting plate are connected by a connecting rod, and the coaxiality is high, and the stability of the device can be ensured without setting an adjustment structure; the shaper mounting plate is directly fixed on the galvanometer mounting plate, the shaper is set on the shaper mounting plate, and the galvanometer is set on the galvanometer mounting plate, so that the close connection between the shaper and the galvanometer is ensured, and the flat-top light output by the shaper is ensured to stably enter the galvanometer, and the output stability of the galvanometer is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a spatial structural diagram of the tooling structure of the utility model applied to beam shaping;

[0015] Description of reference numerals:

[0016] 1. Galvanometer; 2. Galvanometer mounting plate; 3. Shaper mounting plate; 4. Beam expander; 5. Fiber rack mounting plate; 6. Fiber head; 7. Fiber rack; 8. Connecting rod; 9. Beam expander mounting plate; 10. Shaper. DETAILED DESCRIPTION

[0017] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0019] like Figure 1 As shown, the utility model provides a tooling structure for beam shaping. For the convenience of description, the length direction of the galvanometer 1 is defined as the left-right direction, the width direction of the galvanometer 1 is defined as the front-back direction, and the height direction of the galvanometer 1 is defined as the up-down direction. Figure 1 A spatial rectangular coordinate system is established in , where the positive direction of X is the right direction, the positive direction of Y is the forward direction, and the positive direction of Z is the upward direction.

[0020] The utility model provides a tooling structure for beam shaping, comprising an optical fiber head 6, an optical fiber frame 7, an optical fiber frame mounting plate 5, a beam expander 4, a beam expander mounting plate 9, a shaper 10, a shaper mounting plate 3, a galvanometer mounting plate 2, a galvanometer 1, and a connecting rod 8, wherein the right end of the connecting rod 8 is arranged on the optical fiber frame mounting plate 5, the left end of the connecting rod 8 is arranged on the shaper mounting plate 3, the beam expander mounting plate 9 is sleeved on the connecting rod 8, and the beam expander 4 is located between the optical fiber frame mounting plate 5 and the beam expander mounting plate 9; the optical fiber head 6 is arranged on the optical fiber frame mounting plate 5 through the optical fiber frame 7, the right end of the beam expander 4 is arranged on the optical fiber frame mounting plate 5, and the left end of the beam expander 4 is arranged on the beam expander mounting plate 9; the shaper 10 is arranged on the shaper mounting plate 3, the shaper mounting plate 3 is fixedly connected with the galvanometer mounting plate 2 by screws or bolts, and the galvanometer 1 is arranged on the galvanometer mounting plate 2; the center lines of the optical fiber head 6, the beam expander 4, the shaper 10, and the galvanometer 1 coincide with each other.

[0021] The utility model relates to a tooling structure for beam shaping, in which an optical fiber rack mounting plate 5, a shaper mounting plate 3, and a beam expander mounting plate 9 are connected together through a connecting rod 8, and then two ends of a beam expander 4 are respectively connected to the optical fiber rack mounting plate 5 and the beam expander mounting plate 9, and a shaper 10 is connected to the shaper mounting plate 3, so that the beam expander 4 and the shaper 10 are coaxially connected, ensuring that the laser processed by the beam expander 4 enters the shaper 10 to form a flat-top light, and has a simple structure and high coaxiality, and the stability of the shaper 10 can be ensured without setting an adjustment structure.

[0022] Preferably, Figure 1 As shown, the light input end of the beam expander 4 is connected to the optical fiber rack mounting plate 5 by threading, and the light output end of the beam expander 4 is connected to the beam expander mounting plate 9 by threading. In this embodiment, a fiber rack mounting plate threaded hole is provided at the center of the optical fiber rack mounting plate 5, and screw threads are provided on the outer peripheral surface of the light input end (right end) of the beam expander 4, and the right end of the beam expander 4 is screwed into the threaded hole of the optical fiber rack mounting plate through the screw threads. A beam expander mounting plate threaded hole is provided at the center of the beam expander mounting plate 9, and screw threads are provided on the outer peripheral surface of the light output end (left end) of the beam expander 4, and the left end of the beam expander 4 is screwed into the threaded hole of the beam expander mounting plate through the screw threads, so that the beam expander 4 is installed.

[0023] Preferably, Figure 1As shown, a plurality of connection holes are provided on the fiber rack mounting plate 5, the beam expander mounting plate 9, and the shaper mounting plate 3, and the plurality of connection holes of the three are aligned with each other, and the connecting rod 8 is passed through the connection holes of the three. Furthermore, the number of the connection holes on the fiber rack mounting plate 5, the beam expander mounting plate 9, and the shaper mounting plate 3 are three, and the line connecting the centers of the three connection holes is a triangle; the number of the connecting rods 8 is three. The line connecting the centers of the three connection holes forms an isosceles triangle, which is used to ensure the coaxiality among the fiber rack mounting plate 5, the beam expander mounting plate 9, and the shaper mounting plate 3. In other embodiments, the number of the connecting rods 8 can also be multiple, as long as the fiber rack mounting plate 5, the beam expander mounting plate 9, and the shaper mounting plate 3 can be connected to each other.

[0024] Preferably, in this embodiment, screw threads are provided on the outer circumferences of the left and right ends of the connecting rod 8, and internal threads are provided in the inner walls of the connecting holes on the fiber rack mounting plate 5 and the shaper mounting plate 3. The two ends of the connecting rod 8 are respectively fastened to the fiber rack mounting plate 5 and the shaper mounting plate 3 through screw threads and internal threads; and limiting members are provided on both sides of the beam expander mounting plate 9 to limit the position of the beam expander mounting plate 9 on the connecting rod 8. In this embodiment, the optical fiber head 6 is fixed on the right end face of the optical fiber rack mounting plate 5 through the optical fiber rack 7, and the optical fiber head 6 is directly opposite to the center of the threaded hole of the optical fiber rack mounting plate, so that the laser emitted by the optical fiber head 6 can directly enter the light-incoming end of the beam expander 4.

[0025] Preferably, Figure 1 As shown, the galvanometer mounting plate 2 is an L-shaped plate, the shaper mounting plate 3 is fixedly connected to the right end surface of the vertical surface of the L-shaped plate, and the galvanometer 1 is placed on the horizontal surface of the L-shaped plate. Further, in this embodiment, a plurality of galvanometer mounting plate connection holes are opened on the vertical surface of the galvanometer mounting plate 2, and a plurality of shaper mounting plate connection holes are opened on the shaper mounting plate 3. The galvanometer mounting plate connection holes and the shaper mounting plate connection holes are aligned, and screws or bolts are inserted between the two, so as to realize the fastening connection of the shaper mounting plate 3 to the vertical surface of the galvanometer mounting plate 2, so that the flat top light generated by the shaper 10 can directly enter the galvanometer 1, ensuring the stable output of the flat top light in the shaper 10.

[0026] Furthermore, in this embodiment, the shaper 10 is a DOE shaper. The optical fiber holder 7 holds the optical fiber head 6 .

[0027] The utility model relates to a tooling structure for beam shaping, and its working principle is as follows:

[0028] First, follow the attached Figure 1 And the connection relationship of each component described above, connect each component.

[0029] Secondly, the optical fiber head 6 is connected to electricity, and the optical fiber head 6 emits laser, and the laser enters the beam expander 4, and the beam expander 4 expands and tidies the laser. The laser after beam expansion and tidying by the beam expander 4 enters the shaper 10, and the shaper 10 generates flat-top light, and the generated flat-top light enters the galvanometer 1, and the galvanometer 1 uses the flat-top light to scan the metal powder, and the metal powder is melted by the heat to complete the printing of the part.

[0030] The tooling structure used for beam shaping involved in the utility model has the following beneficial effects:

[0031] 1. The utility model is provided with a plurality of connecting rods 8, which connect the optical fiber rack mounting plate 5, the beam expander mounting plate 9, and the shaper mounting plate 3. The beam expander 4 is arranged between the optical fiber rack mounting plate 5 and the beam expander mounting plate 9, and the shaper 10 is arranged on the shaper mounting plate 3, so that the coaxiality between the beam expander 4 and the shaper 10 can be ensured, and the problem of unstable coaxiality of the shaper 10 in the prior art is solved.

[0032] 2. In the present invention, the shaper mounting plate 3 is connected to the vertical surface of the galvanometer mounting plate 2, which can ensure that the flat-top light generated by the shaper 10 directly enters the galvanometer 1, thereby ensuring the stable output of the galvanometer 1.

[0033] 3. The utility model has a simple structure and high coaxiality, and can ensure the stability of the shaper 10 without providing a special adjustment structure for the shaper 10.

[0034] In summary, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A tooling structure for beam shaping, characterized in that: The optical fiber head (6) comprises an optical fiber rack (7), an optical fiber rack mounting plate (5), a beam expander (4), a beam expander mounting plate (9), a shaper (10), a shaper mounting plate (3), a galvanometer mounting plate (2), a galvanometer (1), and a connecting rod (8), wherein one end of the connecting rod (8) is arranged on the optical fiber rack mounting plate (5), the other end of the connecting rod (8) is arranged on the shaper mounting plate (3), the beam expander mounting plate (9) is sleeved on the connecting rod (8), and the beam expander (4) is located between the optical fiber rack mounting plate (5) and the beam expander mounting plate (9). The optical fiber head (6) is arranged on the optical fiber frame mounting plate (5) through the optical fiber frame (7), one end of the beam expander (4) is arranged on the optical fiber frame mounting plate (5), and the other end of the beam expander (4) is arranged on the beam expander mounting plate (9); the shaper (10) is arranged on the shaper mounting plate (3), the shaper mounting plate (3) is fixedly connected to the galvanometer mounting plate (2), and the galvanometer (1) is arranged on the galvanometer mounting plate (2); the center lines of the optical fiber head (6), the beam expander (4), the shaper (10), and the galvanometer (1) coincide with each other.

2. The tooling structure for beam shaping according to claim 1, characterized in that: The light input end of the beam expander (4) is connected to the optical fiber rack mounting plate (5) through a thread, and the light output end of the beam expander (4) is connected to the beam expander mounting plate (9) through a thread.

3. The tooling structure for beam shaping according to claim 1, characterized in that: The optical fiber rack mounting plate (5), the beam expander mounting plate (9), and the shaper mounting plate (3) are all provided with a plurality of connection holes, the plurality of connection holes of the three are aligned with each other, and the connection rods (8) are inserted through the connection holes of the three.

4. The tooling structure for beam shaping according to claim 3, characterized in that: The outer circumferential surfaces of both ends of the connecting rod (8) are provided with screw threads, and the connecting holes on the optical fiber rack mounting plate (5) and the shaper mounting plate (3) are provided with internal threads. The two ends of the connecting rod (8) are respectively fastened to the optical fiber rack mounting plate (5) and the shaper mounting plate (3) through the screw threads and the internal threads; and limiting members are provided on both sides of the beam expander mounting plate (9) for limiting the position of the beam expander mounting plate (9) on the connecting rod (8).

5. The tooling structure for beam shaping according to claim 3, characterized in that: The number of connecting holes on the optical fiber rack mounting plate (5), the beam expander mounting plate (9), and the shaper mounting plate (3) are all three, and the line connecting the centers of the three connecting holes is a triangle; the number of the connecting rods (8) is three.

6. The tooling structure for beam shaping according to claim 1, characterized in that: The galvanometer mounting plate (2) is an L-shaped plate, the shaper mounting plate (3) is fixedly connected to the vertical surface of the L-shaped plate, and the galvanometer (1) is placed on the horizontal surface of the L-shaped plate.

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