A multi-beam combined oblique incidence rotating jet polishing head

Abstract

This invention relates to the field of high-precision optical component manufacturing technology, specifically to a multi-beam-combining oblique-incidence rotating jet polishing head, comprising: a hollow motor, one end of which is fixedly connected to a rotary joint via a coupling, and the other end of which is fixedly connected to a main shaft via a coupling; both the hollow motor and the coupling are housed within a protective shell; a guide tube passing sequentially through the coupling, the rotor of the hollow motor, the coupling, and the main shaft; a branch connector for diverting the polishing slurry delivered by the main shaft; the inlet of the branch connector being connected to the outlet of the main shaft for slurry guiding; the outlet of the branch connector being connected to the inlet of a connector plate for slurry guiding; the branch connector being at least a one-to-two connector; and a connecting substrate fixedly connected to the outer wall of the protective shell. This invention can generate rotationally symmetrical Gaussian-type removal spots. By employing multi-beam-combining to improve removal efficiency, and by adjusting the nozzle angle, number, and size of the connector plate, the efficient and non-destructive processing requirements of different optical components can be met.

Description

Technical Field

[0001] This invention relates to the field of high-precision optical component manufacturing technology, specifically to a multi-beam synthesis oblique incidence rotating jet polishing head. Background Technology

[0002] With the development of space optics and high-power lasers, the demand for complex-shaped optical components, such as high-precision aspherical surfaces and freeform surfaces, is constantly increasing, placing higher demands on the processing of optical components. Jet polishing, as a novel ultra-precision machining technology, features low contact pressure and small beam diameter, and does not introduce new subsurface defects in the material during processing. It can process various complex curved surfaces, and is particularly advantageous for workpieces with high steepness and small curvature radii. Furthermore, it has a strong ability to remove mid-frequency errors from the surface of optical components, providing an effective means for error convergence across the entire frequency band of optical components.

[0003] However, existing jet polishing technologies, when the jet is directly incident on the workpiece, show virtually no material removal in the central region, resulting in a W-shaped removal function and a high-frequency error on the finished optical surface. When the jet is obliquely incident on the workpiece, the removal function is crescent-shaped and lacks symmetry, making process calculations difficult. Jet polishing removes workpiece material using shearing force, resulting in low removal efficiency. Furthermore, existing jet polishing devices often employ eccentric direct incident or small-angle oblique incident methods, leading to low removal rates and poor ability to adjust the shape of the removal spot. For example, the polishing head disclosed in Chinese Patent Publication No. CN212527368U, entitled "A Rotating Jet Polishing Device," illustrates this issue.

[0004] Therefore, those skilled in the art urgently need to design a novel jet polishing head to solve the technical problems existing in the prior art. Summary of the Invention

[0005] Therefore, to overcome the shortcomings of existing technologies, this invention proposes a multi-beam synthesis oblique-incidence rotary jet polishing head. The jet polishing head comprises a rotary joint, a hollow motor, a replaceable multi-nozzle connector plate, an angle adjustment head, and jet nozzles. It achieves highly efficient rotationally symmetric Gaussian-shaped spot removal and allows adjustment of the spot size, processing distance, and connector plate size as needed to meet the requirements of various workpieces.

[0006] A multi-beam combining oblique incidence rotary jet polishing head includes: a rotary joint, a protective shell, a hollow motor, and a main shaft. One end of the hollow motor is fixedly connected to the rotary joint via a coupling, and the other end is fixedly connected to the main shaft via a coupling. The coupling passes through the top of the protective shell, and the main shaft passes through the bottom of the protective shell. Both the hollow motor and the coupling are located inside the protective shell. The oblique incidence rotary jet polishing head also includes: The guide tube passes sequentially through the coupling, the rotor of the hollow motor, the coupling, and the main shaft; A branch connector for diverting the polishing slurry delivered by the spindle; the inlet of the branch connector is connected to the outlet of the spindle for slurry diversion; the outlet of the branch connector is connected to the inlet of the connector plate for slurry diversion; the branch connector is at least a one-to-two connector. And a connecting base plate that is fixedly connected to the outer wall of the protective shell.

[0007] Preferably, the input port of the connector plate and the output port of the branch connector are matched one-to-one and connected by liquid guiding.

[0008] Preferably, the oblique-incidence rotary jet polishing head also includes a split connector; The bottom end of the split connector and the top end of the connector plate are threaded together. Furthermore, the split connector is equipped with a slot and a branch connector for snapping.

[0009] Preferably, the rotor of the hollow motor has a hollow structure and is connected to a rotary joint via a coupling.

[0010] Preferably, the oblique-incidence rotary jet polishing head also includes a motor base; Inside the protective casing, the motor base is fixedly connected to the inner wall of the protective casing; The stator of the hollow motor is fixed to the motor base.

[0011] Preferably, the connector plate consists of a connector plate base, several angle adjustment heads, several fixed angle connectors, several jet nozzles, and a calibrator; Among them, the number of angle adjustment heads = the number of fixed angle connectors = the number of jet nozzles = the number of branch connectors = the number of input ports of the connector plate; The plurality of angle adjustment heads are symmetrically distributed on the joint plate base along the rotation axis; The plurality of fixed-angle connectors and the plurality of angle adjusting heads are threadedly connected in a one-to-one correspondence; Each fixed-angle connector has a threaded connection to a jet nozzle at its output port. The calibrator is installed at the center of the bottom surface of the connector plate base, and multiple jet nozzles stream the beams along the extension line of the calibrator.

[0012] Preferably, the fluid circuit switching range is from 1 degree to 1 degree.

[0013] Preferably, the angle adjusting head adopts a ball-cone high-pair structure with an auxiliary spring, so that the angle adjusting head can achieve two degrees of freedom adjustment of the jet angle; The apex of the conical structure penetrates the base of the connector plate and serves as the inlet of the connector plate, connecting to the outlet of the branch connector for fluid guidance.

[0014] The technical solution of this invention has the following advantages: This invention provides a novel polishing head for jet polishing in optical processing, capable of generating rotationally symmetric Gaussian removal spots. By employing multi-beam synthesis to improve removal efficiency, and adjusting the nozzle angle, number, and connector plate size, it is possible to meet the high-efficiency, non-destructive processing requirements of various optical components. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a partial half-sectional view of a multi-beam synthesis oblique incidence rotating jet polishing head according to the present invention; Figure 2 This is another part of a half-sectional view of a multi-beam synthesis oblique incidence rotating jet polishing head according to the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Rotary joint; 2. Connecting base plate; 3. Protective shell; 4. Split connector; 5. Connector plate base; 6. Coupling; 7. Hollow motor; 8. Liquid guide tube; 9. Coupling; 10. Motor base; 11. Main shaft; 12. Branch connector; 13. Angle adjustment head; 14. Fixed angle connector; 15. Jet nozzle head; 16. Calibrator. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1 like Figure 1-2 This embodiment discloses a multi-beam synthesis oblique incidence rotary jet polishing head, including: a rotary joint 1, a protective shell 3, a hollow motor 7 and a main shaft 11; One end of the hollow motor 7 is fixedly connected to the rotary joint 1 via a coupling 6, and the other end is fixedly connected to the main shaft 11 via a coupling 9; wherein, the coupling 6 passes through the top of the protective shell 3, and the main shaft 11 passes through the bottom of the protective shell 3; both the hollow motor 7 and the coupling 9 are located inside the protective shell 3; The oblique incidence rotary jet polishing head also includes: The guide tube 8 passes sequentially through the coupling 6, the rotor of the hollow motor 7, the coupling 9, and the main shaft 11; A branch connector 12 is used to divert the polishing fluid conveyed by the spindle 11; the inlet of the branch connector 12 is connected to the outlet of the spindle 11 for fluid guidance; the outlet of the branch connector 12 is connected to the inlet of the connector plate for fluid guidance; the branch connector 12 is at least a one-to-two connector, and can also be a one-to-multiple connector depending on efficiency requirements and installation space, so as to realize simultaneous processing of multiple jet nozzles 15.

[0023] And a connecting base plate 2 that is fixedly connected to the outer wall of the protective shell 3.

[0024] Specifically: The inlet of the connector plate and the outlet of the branch connector 12 are matched one by one and connected by fluid.

[0025] In addition, the oblique incidence rotary jet polishing head in this embodiment also includes a split connector 4; The bottom end of the split connector 4 and the top end of the connector 5 are threaded together; and the split connector 4 is provided with a slot and a branch connector 12 for engagement, and realizes torque transmission to the connector 5.

[0026] The rotor of the hollow motor 7 has a hollow structure and is connected to the rotary joint 1 via the coupling 6.

[0027] The oblique-incidence rotary jet polishing head also includes a motor base 10; Inside the protective shell 3, the motor base 10 is fixedly connected to the inner wall of the protective shell 3; The stator of the hollow motor 7 is fixed on the motor base 10.

[0028] The connector plate consists of a connector plate base 5, several angle adjustment heads 13, several fixed angle connectors 14, several jet nozzles 15, and a calibrator 16; Among them, the number of angle adjusting heads 13 = the number of fixed angle connectors 14 = the number of jet nozzles 15 = the number of connectors of branch connectors 12 = the number of input ports of connector discs; Several angle adjustment heads 13 of the connector plate are symmetrically distributed on the connector plate base 5 along the rotation axis; The connector plate has several fixed-angle connectors 14 and several angle adjusting heads 13 that correspond one-to-one and are connected by standard pipe threads; Each fixed-angle connector 14 of the connector plate has an output port connected to a jet nozzle 15 via a standard pipe thread. Different jet nozzles 15 with different beam diameters or different flow channel forms can be quickly replaced according to processing needs.

[0029] The connector plate calibrator 16 is installed at the center of the bottom surface of the connector plate base, and the multiple jet nozzles 15 beam the jets along the extension line of the calibrator. Specifically, the calibrator 16 is used to indicate the position of the rotation axis of the obliquely incident rotating jet polishing head. When using fixed-angle connectors 14 with different angles, the jets emitted by the multiple jet nozzles 14 converge at different positions on the rotation axis, corresponding to different lengths of the standard calibrator 16.

[0030] The fixed angle connectors 14 on the same connector plate have the same bending angle. By replacing different fixed angle connectors 14 according to actual needs, the hydraulic circuit can be converted within the range of 30 degrees to 75 degrees.

[0031] The angle adjustment head 13 of the connector plate adopts a ball-cone high-pair structure with an auxiliary spring, so that the angle adjustment head 13 can achieve two degrees of freedom adjustment of the jet angle; The apex of the conical structure penetrates the connector plate base 5 and serves as the inlet of the connector plate, connecting to the outlet of the branch connector 12 for liquid guidance.

[0032] Before processing, the oblique incidence rotary jet polishing head in this embodiment should be calibrated. The specific steps are as follows: First, select a suitable size connector plate and the bend angle of the fixed angle connector 14 according to the size, curvature, and height of the component to be processed; second, calculate the position of the beam convergence point on the rotation axis of the oblique incidence rotary jet polishing head according to the selected connector plate and fixed angle connector 14; select and install the corresponding calibrator 16 according to the calculation result; turn on the jet, observe the convergence position of multiple jets, and adjust the angle adjustment head 13 so that the multiple jets converge at the apex of the standard 16; finally, complete the jet position calibration and remove the calibrator 16.

[0033] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A multi-beam combining oblique incidence rotating jet polishing head, comprising: The rotary joint (1), protective shell (3), hollow motor (7) and main shaft (11) are characterized in that one end of the hollow motor (7) is fixedly connected to the rotary joint (1) through a coupling (6), and the other end is fixedly connected to the main shaft (11) through a coupling (9); wherein the coupling (6) passes through the top of the protective shell (3), and the main shaft (11) passes through the bottom of the protective shell (3); the hollow motor (7) and the coupling (9) are both located inside the protective shell (3); The oblique incidence rotary jet polishing head also includes: The guide tube (8) passes through the coupling (6), the rotor of the hollow motor (7), the coupling (9), and the main shaft (11) in sequence. A branch connector (12) for diverting the polishing fluid conveyed by the spindle (11); the inlet of the branch connector (12) is connected to the outlet of the spindle (11) for fluid guiding; the outlet of the branch connector (12) is connected to the inlet of the connector plate for fluid guiding; the branch connector (12) is at least a one-to-two connector; And the connecting base plate (2) which is fixedly connected to the outer wall of the protective shell (3); The connector plate consists of a connector plate base (5), several angle adjustment heads (13), several fixed angle connectors (14), several jet nozzles (15), and a calibrator (16); Among them, the number of angle adjustment heads (13) = the number of fixed angle connectors (14) = the number of jet nozzles (15) = the number of connectors of the branch connectors (12) = the number of input ports of the connector plate; The plurality of angle adjustment heads (13) are symmetrically distributed on the joint plate base (5) along the rotation axis; The plurality of fixed-angle connectors (14) and the plurality of angle adjusting heads (13) are connected one-to-one by thread; Each fixed-angle connector (14) has a threaded nozzle (15) connected to its output port. The calibrator (16) is installed at the center of the bottom surface of the connector plate substrate, and multiple jet nozzles (15) stream the jet onto the extension line of the calibrator (16); By replacing different fixed-angle connectors (14) according to actual needs, the hydraulic circuit can be switched within the range of 30 degrees to 75 degrees. The angle adjustment head (13) adopts a ball-cone high-pair structure with an auxiliary spring, so that the angle adjustment head (13) can achieve two degrees of freedom adjustment of the jet angle; The apex of the conical structure penetrates the connector plate base (5) and serves as the inlet of the connector plate and the outlet of the branch connector (12) for liquid guiding.

2. The oblique-incidence rotating jet polishing head for multi-beam synthesis according to claim 1, characterized in that, The input port of the connector plate and the output port of the branch connector (12) are matched one by one and connected by liquid guiding.

3. The oblique-incidence rotating jet polishing head for multi-beam synthesis according to claim 1, characterized in that, The oblique-incidence rotary jet polishing head also includes a split connector (4); The bottom end of the split connector (4) and the top end of the connector plate are threaded together; Furthermore, the split connector (4) is provided with a slot and a branch connector (12) for snapping.

4. The oblique-incidence rotating jet polishing head for multi-beam synthesis according to claim 1, characterized in that, The rotor of the hollow motor (7) adopts a hollow structure and is connected to the rotary joint (1) through a coupling (6).

5. The oblique-incidence rotating jet polishing head for multi-beam synthesis according to claim 1, characterized in that, The oblique-incidence rotary jet polishing head also includes a motor base (10); Inside the protective shell (3), the motor base (10) is fixedly connected to the inner wall of the protective shell (3); The stator of the hollow motor (7) is fixed on the motor base (10).

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