Precise punching device and method for rotary special-shaped cylindrical surface

Abstract

The invention provides a rotary special-shaped cylindrical surface precise punching device and a punching method. The rotary special-shaped cylindrical surface precise punching device comprises a translation sliding seat, a swing shaft, a swing rod, a rotation shaft, a fixing frame, a lifting shaft and a laser device. The translation sliding seat can be horizontally arranged in a sliding mode, the first end of the swing rod is assembled on the translation sliding seat in a swinging mode through the swing shaft, the rotation shaft is assembled at the second end of the swing rod in a rotating mode, and the central axis of the rotation shaft is perpendicular to the central axis of the swing shaft; the fixing frame is assembled on the rotation shaft to fix a workpiece; the lifting shaft is arranged in a lifting mode and located above the fixing frame, and the laser is installed at the tail end of the lifting shaft so as to correspond to a workpiece on the fixing frame. The four movable parts are matched; a to-be-machined point can be accurately moved to a laser focus position, meanwhile, the tangent plane of the point is perpendicular to a laser shaft, and the machining quality of a hole is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of laser drilling, specifically to a precision drilling device and method for rotating irregular cylindrical surfaces. Background Technology

[0002] In the field of medical processing, lasers are used to create micro-hole arrays on the surface of workpieces to mark information and change the surface's adsorption properties. In the field of aerospace processing, lasers are used to create micro-holes on the surface of workpieces to increase surface area and improve their heat dissipation performance.

[0003] To ensure the quality of micro-holes, the machining point must be on the laser focal point, and the laser must be perpendicular to the machining surface. When the workpiece surface is a rotating irregular cylindrical surface (i.e., the cylindrical workpiece is a rotating structure, and its cylindrical surface is a curved surface with bends or folds), even if a three-dimensional support is used to fix the workpiece, it is difficult to ensure that the machining points on the cylindrical surface meet both of these conditions. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a precision drilling device and method for rotating irregular cylindrical surfaces.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0006] A precision drilling device for rotating irregular cylindrical surfaces includes a translation slide, a swing shaft, a swing rod, a rotation shaft, a fixed frame, a lifting shaft, and a laser. The translation slide is horizontally slidable. The first end of the swing rod is oscillatingly mounted on the translation slide via the swing shaft. The rotation shaft is rotatably mounted on the second end of the swing rod, with its central axis perpendicular to the central axis of the swing shaft. The fixed frame is mounted on the rotation shaft to fix the workpiece. The lifting shaft is vertically adjustable and located above the fixed frame. The laser is mounted at the end of the lifting shaft to correspond to the workpiece on the fixed frame.

[0007] A method for precision drilling of a rotating irregular cylindrical surface, used to drill holes in the rotating irregular cylindrical surface of a workpiece, specifically, the method includes the following steps:

[0008] S1, providing the aforementioned rotary irregular cylindrical precision drilling device, and fixing the workpiece on the fixed frame, wherein the central axis of the workpiece is coaxial with the central axis of the rotation axis;

[0009] S2, define the initial state: the pendulum is in a horizontal position at 0°. Import the 3D model of the workpiece. Based on the initial state, set the position coordinates of the machining point on the rotating cylindrical surface of the workpiece as {X1, X2, Φ1, Φ2}, where X1 represents the vertical distance from the machining point to the bottom surface of the workpiece facing the axis of rotation, X2 represents the vertical distance from the machining point to the central axis of the workpiece, Φ1 represents the angle between the tangent at the machining point and the central axis of the workpiece, and Φ2 represents the angle between the machining point on the cross-section of the workpiece and the vertical plane passing through the central axis of the workpiece. The laser is configured such that its laser focus is located on the central axis of the workpiece.

[0010] S3, when machining a machining point on a cylindrical surface away from the rotation axis, the rocker arm swings upward Φ1, the rotation axis rotates Φ2, and the translational slide compensates for the translational displacement. △ R = L - LcosΦ1 - X1 cosΦ1 + X2sinΦ1; the amount of upward movement of the lifting shaft is △ Z = L sinΦ1 + X1sinΦ1 + X2 cosΦ1, where L is the length from the central axis of the swing shaft to the bottom surface of the workpiece facing the side of the rotation shaft; this is to align the laser's focus with the machining point; when all components are switched to their positions, the laser begins drilling at that point. In this step, since the workpiece is a rotating structure, other points on the same cross-section of the current machining point only need to be rotated via the rotation shaft.

[0011] S4, when machining the machining point on the cylindrical surface facing the rotation axis, the rocker arm swings downward Φ1, the rotation axis rotates Φ2, and the translational slide compensates for the translational displacement. △ R = L - LcosΦ1 - X1 cosΦ1 + X2sinΦ1; the amount of movement of the lifting shaft as it descends is... △ Z = L sinΦ1 + X1sinΦ1 + X2 cosΦ1, where L is the length from the central axis of the swing shaft to the bottom surface of the workpiece facing the side of the rotation shaft; so that the focus of the laser is aligned with the processing point; when the positions of each device are switched to the correct position, the laser begins to drill a hole at the processing point;

[0012] S3 and S4 are not ranked in any particular order, or you can choose one of them.

[0013] Furthermore, in steps S3 and S4, the upward swing of the swing arm Φ1 is represented as +Φ1, and the downward swing of the swing arm Φ1 is represented as -Φ1; the upward movement of the lifting shaft... △ Z represents +ΔZ, the amount of downward movement of the lifting shaft. △ Z is represented as -ΔZ; the translation compensation amount of the translation slide block towards the laser. △ R is represented by +ΔR, which is the compensation amount for the translation of the slider in the direction away from the laser. △ R is represented as -ΔR.

[0014] Furthermore, step S5 includes performing continuous point machining based on S3 and / or S4, where the swing angle of the rocker arm is Φ1B-Φ1A, where Φ1A is the Φ1 value of the previous machining point and Φ1B is the Φ1 value of the next machining point; the rotation angle of the spindle is Φ2B-Φ2A, where Φ2A is the Φ2 value of the previous machining point and Φ2B is the Φ2 value of the next machining point; and the translation compensation amount of the translation slide is... △ RB-ΔRA, where ΔRA is the previous processing point. △ R value, △RB is the value of the next processing point. △ R value; lifting compensation amount of the lifting shaft is △ ZB-ΔZA, where ΔZA is the value of the previous processing point. △ Z value, △ZB is the value of the next processing point. △ Z-value.

[0015] Furthermore, the laser is a nanosecond laser, a picosecond laser, or a femtosecond laser.

[0016] Furthermore, the fixing frame is a clamping frame.

[0017] Furthermore, the rotation axis is a unidirectional rotation structure.

[0018] Furthermore, the holes processed by the laser at the processing point are blind holes or through holes.

[0019] The technical solution provided by this invention has the following beneficial effects:

[0020] The rotary irregular cylindrical precision drilling device provided in this application utilizes the cooperation of four moving parts (translation slide, swing axis, rotation axis, and lifting axis). During operation, a three-dimensional model of the rotary irregular cylindrical workpiece with processing points is imported. After obtaining the position information of the laser focus and any point on the irregular cylindrical surface, the rotary irregular cylindrical precision drilling method provided controls the movement of the four moving parts to accurately move the point to be processed to the laser focus position, while ensuring that the tangent of that point is perpendicular to the laser axis, thus guaranteeing the processing quality of the hole. Attached Figure Description

[0021] Figure 1 The diagram shown is a structural schematic of the precision drilling device for rotating irregular cylindrical surfaces in the embodiment.

[0022] Figure 2 The diagram shown is a schematic representation of the structure of the rotating irregular cylindrical workpiece in the embodiment.

[0023] Figure 3 The diagram shown is a partial structural schematic of the precision drilling device for rotating irregular cylindrical surfaces in the embodiment. Detailed Implementation

[0024] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments and to explain the operating principles of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] In the description of this invention, terms such as "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 this invention.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] Reference Figures 1 to 3 As shown, this embodiment provides a precision drilling device for rotating irregular cylindrical surfaces, including a translation slide 11, a swing shaft 12, a swing rod 13, a unidirectional rotating shaft 14, a fixed frame (not shown), a lifting shaft 15, and a laser 16. The translation slide 11 is horizontally slidable; in this embodiment, the translation slide 11 is configured to move left and right. The first end of the swing rod 13 is swayably mounted on the translation slide 11 via the swing shaft 12, enabling 360° rotation around the swing shaft 12. Specifically, the central axis of the swing shaft 12 is perpendicular to the sliding direction of the translation slide 11. Figure 1 The central axis of the swing shaft 12 shown is perpendicular to the plane of the paper. The rotation shaft 14 is rotatably mounted on the second end of the swing rod 13, and the central axis of the rotation shaft 14 is perpendicular to the central axis of the swing shaft 12. The unidirectional rotation shaft 14 can only rotate in one direction, such as only clockwise or counterclockwise rotation. Figure 3 The diagram shows clockwise rotation for better control. The fixing frame is mounted on the rotation shaft 14 to fix the workpiece 1; the lifting shaft 14 is vertically adjustable and located above the fixing frame, as shown. Figure 1 and Figure 3 As shown, the laser 16 is also located above the workpiece 1 fixed by the fixing frame. The laser 16 is installed at the end of the lifting shaft 15 to correspond to the workpiece 1 on the fixing frame.

[0028] The aforementioned rotary precision drilling device for irregular cylindrical surfaces utilizes a unidirectional rotating shaft 14 to rotate the machining point on the cylindrical surface of workpiece 1 to a position directly facing the laser 16. Figure 3As shown, by rotating the spindle 14 clockwise, the point A to be processed is moved to a position directly opposite the laser 16, i.e., to position A1. That is, processing point A1 is located on the vertical plane formed by the axis o of the laser 16 and the workpiece 1. The swing of the swing arm 13 adjusts the tangent of the processing point A on the cylindrical surface of the workpiece 1 on the fixed frame to be horizontal. When the swing arm 13 drives the workpiece 1 to swing, the workpiece 1 will shift in both the horizontal and vertical directions. The sliding of the translation slide 11 compensates for the horizontal shift of the workpiece 1, ensuring that the workpiece 1 on the fixed frame remains below the laser 16. Simultaneously, the lifting shaft 15 compensates for the vertical distance between the laser 16 and the workpiece 1, ensuring that the focus of the laser 16 always falls on the processing point A on the cylindrical surface of the workpiece 1. Thus, the drilling process on the workpiece 1 is achieved.

[0029] This embodiment also provides a method for precision drilling of a rotary irregular cylindrical surface, used to drill holes in the rotary irregular cylindrical surface of workpiece 1. Specifically, the workpiece 1 is as follows: Figure 2 and Figure 3 As shown, it is a rotating structure, meaning that the shape remains the same regardless of the angle at which the workpiece 1 is rotated around its central axis o. The cylindrical surface of the workpiece 1 is a concave curved surface. The end face with the smaller diameter is defined as the top surface 5, and the end face with the larger diameter is defined as the bottom surface 4. In the concave curved surface, one section faces the bottom surface 4, and another section faces the top surface 5. Furthermore, the curved surface facing the top surface 5 is defined as the first curved surface 2, and the curved surface facing the bottom surface 4 is defined as the second curved surface 3.

[0030] The method for precision drilling of irregular cylindrical surfaces includes the following steps:

[0031] S1, the above-mentioned rotary irregular cylindrical precision drilling device is provided, and the workpiece 1 is fixed on the fixed frame, and the central axis o of the workpiece 1 is coaxial with the central axis of the rotation axis 14; as in this embodiment, the bottom surface of the workpiece 1 is close to the rotation axis 14, specifically, it is attached to the rotation axis 14.

[0032] S2, define the initial state: the swing arm 13 is at a horizontal position of 0°. In this embodiment, the swing arm 13 extends to the left and is at a horizontal position of 0°. Import the 3D model of workpiece 1. Using the initial state as a reference, set the coordinates of the machining points on the rotating irregular cylindrical surface of workpiece 1 as {X1, X2, Φ1, Φ2}. Figure 2 and Figure 3 As shown, X1 represents the vertical distance from machining point A to the bottom surface 4 of workpiece 1 facing the rotation axis 14; X2 represents the vertical distance from machining point A to the central axis o of workpiece 1; Φ1 represents the angle between the tangent at machining point A and the central axis o of workpiece 1; Φ2 represents the angle between machining point A and the vertical plane passing through the central axis o of workpiece 1 on the cross-section of workpiece 1, indicating that workpiece 1 needs to rotate Φ2 so that machining point A is directly facing the laser 16 (i.e., Figure 3 (From point A to point A1); the laser 16 is configured such that its laser focus is located on the central axis o of the workpiece 1.

[0033] S3, based on the setting of S2, when machining a machining point on the cylindrical surface away from the rotation axis 14, i.e., machining point A of the first curved surface 2, the swing arm 13 swings upward Φ1, and the rotation axis rotates Φ2, so that the machining point is on the vertical plane formed by the central axis o of the laser 16 and the workpiece 1, and the tangent of the machining point is adjusted to be horizontal. The translational slide 11 translational (specifically, translational to the left) compensation amount △ R = L - LcosΦ1 - X1 cosΦ1 + X2sinΦ1; This compensates for the horizontal offset, ensuring the machining point of workpiece 1 is directly below laser 16. The amount of upward movement of the lifting shaft 15 is... △ Z = L sinΦ1 + X1sinΦ1 + X2 cosΦ1, where L is the length from the central axis of the swing shaft 12 to the bottom surface 4 of the workpiece 1 facing the side of the rotation shaft 14; so that the focus of the laser 16 is aligned with the processing point; when the positions of each device are switched to the correct position, the laser 16 begins to drill a hole at the processing point.

[0034] S4, based on the setting of S2, when machining the machining point on the cylindrical surface away from the rotation axis 14, that is, when machining the machining point on the second curved surface 3, the rocker arm 13 swings downward Φ1, the rotation axis 14 rotates Φ2, and the translational slide 11 compensates for the translational amount. △ R = L - LcosΦ1 - X1 cosΦ1 + X2sinΦ1; the amount of movement of the lifting shaft 15 as it descends is... △ Z = L sinΦ1 + X1sinΦ1 + X2cosΦ1, where L is the length from the central axis of the swing shaft 12 to the bottom surface 4 of the workpiece 1 facing the side of the rotation shaft 14; so that the focus of the laser 16 is aligned with the processing point; when the positions of each device are switched to the correct position, the laser 16 begins to drill a hole at the processing point.

[0035] In this way, drilling is achieved at the machining points on the first curved surface 2 and the second curved surface 3. Specifically, the holes machined by the laser at the machining points are either blind holes or through holes.

[0036] Steps S3 and S4 are not sequential.

[0037] Furthermore, in steps S3 and S4, to facilitate the control system in distinguishing the swing direction of the swing arm 13 and the lifting shaft 15, the upward swing Φ1 of the swing arm 13 is represented as +Φ1, and the downward swing Φ1 of the swing arm 13 is represented as -Φ1; the upward movement of the lifting shaft 15... △ Z represents +ΔZ, the amount of downward movement of the lifting axis 15. △ Z is represented as -ΔZ; the translation compensation amount of the translation slide 11 towards the laser 16.△ R is represented by +ΔR, which is the translation compensation amount of the translation slide 11 in the direction away from the laser 16. △ R is represented as -ΔR. +Φ1, +ΔZ, and +ΔR can be understood as positive values, while -Φ1, -ΔR, and -ΔZ can be understood as negative values. For example, if the angle value of Φ1 is 10°, the system displays +10°, indicating that the pendulum 13 swings upward by 10°; if the system displays -10°, it indicates that the pendulum 13 swings downward by 10°. Similarly, +ΔZ and -ΔZ, as well as +ΔR and -ΔR, have the same indication. Since the rotation axis 14 rotates in one direction only and there is no reverse rotation, Φ2 does not have a negative value.

[0038] Furthermore, since workpiece 1 is a rotating structure, when switching to other processing points on the same circumferential cross section, it is only necessary to drive the rotation shaft 14 to rotate.

[0039] Furthermore, step S5 is also included. When performing continuous point machining based on S3 and / or S4, the swing angle of the rocker arm 13 is Φ1B-Φ1A, where Φ1A is the Φ1 value of the previous machining point and Φ1B is the Φ1 value of the next machining point. This means that the swing compensation Φ1B-Φ1A is performed based on the previous machining point; a positive value of Φ1B-Φ1A results in upward swing, and a negative value results in downward swing. The rotation angle of the spin shaft 14 is Φ2B-Φ2A, where Φ2A is the Φ2 value of the previous machining point and Φ2B is the Φ2 value of the next machining point. This means that the rotation Φ2B-Φ2A is performed based on the previous machining point, and Φ2B is greater than Φ2A. The translation compensation amount of the translation slide 11 is... △ RB-ΔRA, △ RA is the previous processing point △ R value, △ RB is the next processing point △ R-value; refers to the translation compensation based on the previous processing point. △ RB-ΔRA, the △ If RB-ΔRA is positive, then shift to the left. △ If RB-ΔRA is negative, the axis shifts to the right. The lifting compensation amount for lifting shaft 15 is... △ ZB-ΔZA, where ΔZA is the value of the previous processing point. △ Z value, △ZB is the value of the next processing point. △ Z-value; refers to the compensation for rise and fall based on the previous processing point. △ ZB-ΔZA, the △ If ZB-ΔZA is positive, it increases; if it is negative, it decreases.

[0040] With this setup, after importing the 3D model of workpiece 1 and all machining points, the four position parameters {X1, X2, Φ1, Φ2} of each point are determined. This allows calculation of the required movement of the four moving parts (i.e., translation slide 11, swing axis 12, rotation axis 14, and lifting axis 15) from the initial zero point to the machining state of each point, as well as the required movement between points. Based on this, the device can automatically generate machining paths without requiring users to edit them point by point. It also supports users arbitrarily changing the machining path according to process requirements; repeatedly machining the same point or skipping certain points is allowed, as long as the position parameters of the four initial states of the machining points are provided. Machining points can also be added temporarily.

[0041] Furthermore, the four moving parts (i.e., translation slide 11, swing axis 12, rotation axis 14 and lifting axis 15) are independent of each other. The amount of movement and processing time can be calculated before processing. Once each processing point is determined, different processing schemes can be obtained according to the permutation and combination. With the constraints of movement path and time, the scheme with the shortest movement path and the shortest processing time can be selected and the corresponding operation instruction set can be generated to realize automated processing.

[0042] Furthermore, the laser 16 can be a nanosecond laser, picosecond laser, or femtosecond laser, as is available in the prior art. The fixing frame is a clamping frame or similar device.

[0043] The translation slide 11, swing shaft 12, rotation shaft 14 and lifting shaft 15 can be driven by a drive device (such as a cylinder, rotary motor, etc.).

[0044] Furthermore, in other embodiments, the rotation shaft 14 can also adopt a bidirectional rotation structure, so that Φ2 can also be represented by +Φ2 and -Φ2 to indicate forward and reverse rotation.

[0045] The above discloses the processing of a workpiece 1 having a first curved surface 2 and a second curved surface 3; of course, in other embodiments, when the workpiece only has a first curved surface 2 or a second curved surface 3, the above processing steps are adopted in the manner of steps S1+S2+S3+S5, or in the manner of steps S1+S2+S4+S5; that is, one of steps S3 and S4 is selected.

[0046] Furthermore, the solution disclosed in this application can not only perform drilling processing on the structure of a single concave curved surface in the above embodiments, but also perform drilling processing on the structure of a convex curved surface and a curved surface with alternating concave and convex surfaces.

[0047] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A precision drilling device for rotating irregular cylindrical surfaces, characterized in that: The device includes a translation slide, a swing shaft, a swing rod, a rotation shaft, a fixed frame, a lifting shaft, and a laser. The translation slide is horizontally slidable. The first end of the swing rod is oscillatingly mounted on the translation slide via the swing shaft. The rotation shaft is rotatably mounted on the second end of the swing rod, with its central axis perpendicular to the central axis of the swing shaft. The fixed frame is mounted on the rotation shaft to fix the workpiece. The lifting shaft is vertically adjustable and located above the fixed frame. The laser is mounted at the end of the lifting shaft to correspond to the workpiece on the fixed frame.

2. A method for precision drilling of a rotating irregular cylindrical surface, used for drilling holes in the rotating irregular cylindrical surface of a workpiece, characterized in that: The method for precision drilling of irregular cylindrical surfaces includes the following steps: S1, providing the rotary irregular cylindrical precision drilling device as described in claim 1, and fixing the workpiece on the fixed frame, wherein the central axis of the workpiece is coaxial with the central axis of the rotation axis; S2, define the initial state: the pendulum is in a horizontal position at 0°. Import the 3D model of the workpiece. Based on the initial state, set the position coordinates of the machining point on the rotating cylindrical surface of the workpiece as {X1, X2, Φ1, Φ2}, where X1 represents the vertical distance from the machining point to the bottom surface of the workpiece facing the axis of rotation, X2 represents the vertical distance from the machining point to the central axis of the workpiece, Φ1 represents the angle between the tangent at the machining point and the central axis of the workpiece, and Φ2 represents the angle between the machining point on the cross-section of the workpiece and the vertical plane passing through the central axis of the workpiece. The laser is configured such that its laser focus is located on the central axis of the workpiece. S3, when machining a machining point on a cylindrical surface away from the rotation axis, the rocker arm swings upward Φ1, the rotation axis rotates Φ2, and the translational slide compensates for the translational displacement. △ R = L - LcosΦ1 - X1 cosΦ1 + X2sinΦ1; the amount of upward movement of the lifting shaft is △ Z = L sinΦ1 + X1sinΦ1 + X2 cosΦ1, where L is the length from the central axis of the swing shaft to the bottom surface of the workpiece facing the side of the rotation shaft; so that the focus of the laser is aligned with the processing point; when the positions of each device are switched to the correct position, the laser begins to drill a hole at the processing point; S4, when machining the machining point on the cylindrical surface facing the rotation axis, the rocker arm swings downward Φ1, the rotation axis rotates Φ2, and the translational slide compensates for the translational displacement. △ R = L - LcosΦ1 - X1 cosΦ1 + X2sinΦ1; the amount of movement of the lifting shaft as it descends is... △ Z = L sinΦ1 + X1sinΦ1 + X2 cosΦ1, where L is the length from the central axis of the swing shaft to the bottom surface of the workpiece facing the side of the rotation shaft; so that the focus of the laser is aligned with the processing point; when the positions of each device are switched to the correct position, the laser begins to drill a hole at the processing point; S3 and S4 are not ranked in any particular order, or you can choose one of them.

3. The method for precision drilling of rotating irregular cylindrical surfaces according to claim 2, characterized in that: In steps S3 and S4, the upward swing of the swing arm Φ1 is represented as +Φ1, and the downward swing of the swing arm Φ1 is represented as -Φ1; the upward movement of the lifting shaft... △ Z represents +ΔZ, the amount of downward movement of the lifting shaft. △ Z is represented as -ΔZ; the translation compensation amount of the translation slide block towards the laser. △ R is represented by +ΔR, which is the compensation amount for the translation of the slider in the direction away from the laser. △ R is represented as -ΔR.

4. The method for precision drilling of rotating irregular cylindrical surfaces according to claim 3, characterized in that: The process also includes step S5, where, during continuous point machining based on S3 and / or S4, the swing angle of the rocker arm is Φ1B-Φ1A, where Φ1A is the Φ1 value of the previous machining point and Φ1B is the Φ1 value of the next machining point; the rotation angle of the spindle is Φ2B-Φ2A, where Φ2A is the Φ2 value of the previous machining point and Φ2B is the Φ2 value of the next machining point; and the translation compensation amount of the translation slide is... △ RB-ΔRA, where ΔRA is the previous processing point. △ R value, △RB is the value of the next processing point. △ R value; lifting compensation amount of the lifting shaft is △ ZB-ΔZA, △ ZA represents the ΔZ value of the previous processing point, and ΔZB represents the value of the next processing point. △ Z-value.

5. The method for precision drilling of rotary irregular cylindrical surfaces according to claim 2, characterized in that: The laser is a nanosecond laser, a picosecond laser, or a femtosecond laser.

6. The method for precision drilling of a rotating irregular cylindrical surface according to claim 2, characterized in that: The fixing frame is a clamping frame.

7. The method for precision drilling of rotary irregular cylindrical surfaces according to claim 2, characterized in that: The rotation axis is a unidirectional rotating structure.

8. The method for precision drilling of a rotating irregular cylindrical surface according to claim 2, characterized in that: The holes processed by the laser at the processing point are either blind holes or through holes.

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