Multi-pulse femtosecond laser cutting device for cutting propellant cartridges

Abstract

This invention discloses a multi-pulse femtosecond laser cutting device for explosive charges, relating to the field of explosive charge cutting technology. The device is used for laser cutting of explosive charges. The cutting device includes a platform base, a working platform, a finished product hopper, columns, a crossbeam, a transverse feed linear motor, a laser generator, a laser cutting module, and a feeding module. The platform base is placed on a flat surface and has an inclined discharge groove. The platform base is fixedly connected to the finished product hopper. A working platform is located at the top of the platform base, and the working platform has a discharge port located above the inclined discharge groove of the platform base. The working platform is fixedly connected to the feeding module. Columns are respectively installed at both ends of the working platform, and the tops of the two columns are fixedly connected to the crossbeam. The crossbeam is fixedly connected to the transverse feed linear motor. The laser generator is fixedly connected to the tray of the transverse feed linear motor, and the laser cutting module is fixedly connected to the tray of the transverse feed linear motor.

Description

Technical Field

[0001] This invention relates to the field of propellant cutting technology, specifically a device for multi-pulse femtosecond laser cutting of propellant columns. Background Technology

[0002] High-precision explosive components (charges) are crucial for enhancing the destructive power of weapons. Due to the inherent dangers of explosives, achieving safe and precise cutting (severing) of explosives has always been a technical challenge.

[0003] When using traditional cutting methods, the heat generated during the cutting process is continuously transferred to the explosive in contact. Once the heat absorbed by the explosive reaches a certain level, its thermal and mechanical sensitivity increases, its stability decreases, and it becomes more prone to reaction or even detonation. Due to safety factors, the cutting of high-energy explosives is subject to many restrictions.

[0004] This invention utilizes a high-power femtosecond laser to instantly transform explosives within its focused area into high-temperature, high-pressure plasma, thereby ablating and removing the explosive charge and cutting it. During femtosecond laser processing, the timescale for plasma formation from the processed material is much shorter than the timescale for femtosecond laser energy to transfer to the surrounding area. Therefore, the material surrounding the processed area is less susceptible to heat conduction. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-pulse femtosecond laser cutting device for cutting propellant charges, in order to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-pulse femtosecond laser cutting device for laser cutting explosive charges, the cutting device comprising a platform base, a working platform, a finished product hopper, columns, a crossbeam, a transverse feed linear motor, a laser generator, a laser cutting module, and a feeding module. The platform base is placed on a plane and has an inclined discharge groove. The platform base is fixedly connected to the finished product hopper. A working platform is set at the top of the platform base, and the working platform has a discharge port located above the inclined discharge groove of the platform base. The working platform is fixedly connected to the feeding module. Columns are set at both ends of the working platform, and the tops of the two columns are fixedly connected to the crossbeam. The crossbeam is fixedly connected to the transverse feed linear motor. The laser generator is fixedly connected to the tray of the transverse feed linear motor, and the laser cutting module is fixedly connected to the tray of the transverse feed linear motor.

[0007] The columns, working platform, and crossbeams are made of marble. Since the explosive charge is a hazardous material, the cutting process requires strict control of heat accumulation and mechanical vibration to prevent accidental explosions. Marble's excellent thermal stability and high rigidity effectively reduce thermal deformation and vibration, lowering safety risks during the cutting process. The laser generator produces a laser beam. A robotic arm places the explosive charge on the feeding module, which then delivers it to the bottom of the laser cutting module for cutting. The laser cutting module moves on a horizontal feed linear motor to perform the cutting. The cut explosive charge falls from the outlet of the working platform into the inclined discharge chute of the platform base, and then rolls from the other end of the inclined discharge chute into the finished product hopper.

[0008] Furthermore, the laser cutting module includes a fixed frame, a lifting hydraulic cylinder, and a laser cutting head. The fixed frame is fixedly connected to the tray of the transverse feed linear motor, and the lifting hydraulic cylinder is fixedly connected to the fixed frame. The telescopic end of the lifting hydraulic cylinder passes through the fixed frame and is fixedly connected to the laser cutting head. The laser beam generated by the laser generator is transmitted to the laser cutting head, and the laser cutting head processes the explosive charge through multi-pulse laser cutting.

[0009] Furthermore, the feeding module includes a moving platform, a longitudinal feed linear motor, a clamping module, and an anti-deviation module. Longitudinal feed linear motors are respectively installed at both ends of the discharge port of the working platform. The trays of the two longitudinal feed linear motors are fixedly connected to the moving platform. The moving platform is provided with a V-shaped groove. The clamping module and the anti-deviation module are fixedly connected to the moving platform. The longitudinal feed linear motor controls the movement of the moving platform, delivering the explosive charge to the bottom of the laser cutting head at a fixed point. The explosive charge is placed in the V-shaped groove of the moving platform, which keeps the explosive charge horizontal. The clamping module is used to fix the explosive charge in the V-shaped groove, and the anti-deviation module is used to lift the explosive charge at the end away from the clamping module to prevent deviation during cutting.

[0010] Furthermore, the clamping module includes a clamping cylinder, a fixing block, and a chuck. Both ends of the chuck are fixedly connected to the fixing block, and the end of the fixing block away from the chuck is fixedly connected to the telescopic end of the clamping cylinder. The clamping cylinder is fixedly connected to the moving platform. The fixing block fixes the chuck to the clamping cylinder, and the two clamping cylinders control the clamping of the chuck.

[0011] Furthermore, the chuck includes a concave block and a convex block, the concave block being fixedly connected to a fixed block, and the convex block being fixedly connected to another fixed block; the two clamping cylinders facilitate the control of clamping the concave block and the convex block.

[0012] Furthermore, the concave block has clamping bosses at both ends, and a fitting groove is provided between the clamping bosses of the concave block. The convex block has a fixing boss, and a clearance groove is provided at both ends of the convex block. The clamping boss of the concave block and the clearance groove of the convex block can fit together, and the fixing boss of the convex block can fit together with the fitting groove of the concave block. The concave block and the convex block can fit together to clamp explosive charges of different sizes. The clamping boss of the concave block and the fixing boss of the convex block fix the explosive charge through an inclined surface. The inclined surface provides a downward component force, so that the explosive charge fits tightly against the V-shaped groove of the moving platform.

[0013] Furthermore, the anti-deviation module includes an anti-deviation cylinder, a support block, a limiting component, and a pressing component. The two ends of the pressing component are respectively hinged to the limiting component. The end of the limiting component away from the pressing component is fixedly connected to the support block. The end of the support block away from the limiting component is fixedly connected to the anti-deviation cylinder. The anti-deviation cylinder is fixedly connected to the moving platform. The support block fixes the limiting component on the anti-deviation cylinder. The limiting component is used to support the explosive charge, and the pressing component can press the explosive charge downward.

[0014] Furthermore, the limiting component includes a mounting block, an adjusting threaded post, a connecting block, an adjusting block, a connecting rod, a conical block, and a mounting base. The mounting block has a groove, and the adjusting threaded post passes through the groove of the mounting block and is rotatably connected to the mounting base. The adjusting threaded post is rotatably connected to the mounting block, and the adjusting block is fixedly connected to the end of the adjusting threaded post away from the mounting base. The bottom of the adjusting block fits against the mounting block. The connecting block has a threaded hole, which is threadedly connected to the adjusting threaded post. The connecting block is slidably connected to the groove of the mounting block. A connecting bracket is provided at the end of the connecting block near the pressing component, and the connecting block is hinged to the connecting rod through the connecting bracket. The end of the connecting rod away from the connecting block... Hinged to the pressing assembly, the mounting block has conical blocks at both ends. The adjusting threaded column controls the sliding of the connecting block within the groove of the mounting block. The adjusting block is used to rotate the adjusting threaded column, which is equipped with a fixing nut. The fixing nut, in conjunction with the adjusting block, fixes the adjusting threaded column to the mounting block. The connecting block controls the lifting and lowering of the pressing assembly, adjusting the height of the pressing assembly to clamp explosive charges of different sizes. The connecting rod is used to connect the pressing assembly. Several conical blocks, in conjunction with the pressing assembly, can keep the explosive charges horizontal. The conical blocks can clamp and support the explosive charges. When the conical blocks clamp, the explosive charges will slide upward along the conical surface. The pressing assembly presses the upward-sliding explosive charges down to the horizontal.

[0015] Furthermore, the pressing assembly includes a pressure block, an arc-shaped spring, a limiting threaded post, an adjusting nut, and a connecting post. The pressure block is hinged to the connecting rod at both ends, and each end of the pressure block has a U-shaped groove. The pressure block is fixedly connected to the arc-shaped spring. Each end of the arc-shaped spring has a limiting hole, which is rotatably connected to the connecting post. Each end of the arc-shaped spring has a clearance groove. The limiting threaded post passes sequentially through the U-shaped groove of the pressure block and the clearance groove of the arc-shaped spring. The limiting threaded post is fixedly connected to the connecting post. The end of the threaded post furthest from the connecting post is threadedly connected to the adjusting nut; the arc-shaped spring piece fits against the explosive charge, and the limiting threaded post can adjust the curvature of the arc-shaped spring piece to fit explosive charges of different diameters. The limiting threaded post is connected to the arc-shaped spring piece through the connecting post. When adjusting the curvature of the arc-shaped spring piece, the limiting threaded post will slide on the pressure block. The U-shaped groove of the pressure block facilitates the sliding of the limiting threaded post, and the limiting threaded post will rotate with the connecting post when adjusted. The clearance groove of the arc-shaped spring piece facilitates the rotation of the connecting post. The limiting threaded post is adjusted by rotating the adjusting nut.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The chucks can fit together, improving positioning accuracy and stability during clamping;

[0018] 2. When the limiting component clamps, it can lift the explosive charge and work with the pressing component to keep the explosive charge horizontal;

[0019] 3. The pressing component has a self-adjusting function to clamp explosive charges of different sizes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the operation of the present invention;

[0021] Figure 2 This is a schematic diagram of the platform base structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the clamping module structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the clamp structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the anti-offset module structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the main structure connecting the limiting component and the pressing component of the present invention;

[0026] Figure 7 This is a top view of the connection between the limiting component and the pressing component of the present invention;

[0027] Figure 8 for Figure 7A cross-sectional view of point A.

[0028] In the diagram: 11. Platform base; 12. Working platform; 2. Finished product hopper; 3. Column; 4. Crossbeam; 5. Horizontal feed linear motor; 6. Laser generator; 7. Laser cutting module; 71. Fixing frame; 72. Lifting hydraulic cylinder; 73. Laser cutting head; 8. Feeding module; 81. Moving platform; 82. Longitudinal feed linear motor; 83. Clamping module; 831. Clamping cylinder; 832. Fixing block; 833. Chuck; 8331. Concave block; 8332. Convex block; 84. Anti-deviation module; 841. Anti-deviation cylinder; 842. Support block; 843. Limiting component; 8431. Mounting block; 8432. Adjusting threaded post; 8433. Connecting block; 8434. Adjusting block; 8435. Connecting rod; 8436. Conical block; 8437. Mounting base; 844. Pressing component; 8441. Pressing block; 8442. Arc-shaped spring; 8443. Limiting threaded post; 8444. Adjusting nut; 8445. Connecting post; 9. Explosive charge. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0030] Example: Figures 1-8 As shown, the present invention provides a technical solution: a multi-pulse femtosecond laser cutting device for cutting explosive charges 9. The cutting device includes a platform base 11, a working platform 12, a finished product hopper 2, columns 3, a crossbeam 4, a transverse feed linear motor 5, a laser generator 6, a laser cutting module 7, and a feeding module 8. The platform base 11 is placed on a plane and has an inclined discharge groove. The platform base 11 is fixedly connected to the finished product hopper 2. The working platform 12 is set at the top of the platform base 11 and has a discharge port located above the inclined discharge groove of the platform base 11. The working platform 12 is fixedly connected to the feeding module 8. Columns 3 are set at both ends of the working platform 12. The tops of the two columns 3 are fixedly connected to the crossbeam 4. The crossbeam 4 is fixedly connected to the transverse feed linear motor 5. The laser generator 6 is fixedly connected to the tray of the transverse feed linear motor 5. The laser cutting module 7 is fixedly connected to the tray of the transverse feed linear motor 5.

[0031] The columns 3, working platform 12, and crossbeam 4 are made of marble. The explosive charge 9 is a dangerous material, and the cutting process must strictly control heat accumulation and mechanical vibration to prevent accidental explosion. The good thermal stability and high rigidity of marble can effectively reduce thermal deformation and vibration, and reduce the safety risks during the cutting process. The laser generator 6 can generate a laser beam. The robotic arm places the explosive charge 9 on the feeding module 8. The feeding module 8 sends the explosive charge 9 to the bottom of the laser cutting module 7 for cutting. The laser cutting module 7 moves on the horizontal feed linear motor 5 to cut. The cut explosive charge 9 falls from the outlet of the working platform 12 into the inclined discharge chute of the platform base 11. The explosive charge 9 rolls from the other end of the inclined discharge chute of the platform base 11 into the finished product hopper 2.

[0032] like Figure 1 As shown, the laser cutting module 7 includes a fixed frame 71, a lifting hydraulic cylinder 72, and a laser cutting head 73. The fixed frame 71 is fixedly connected to the tray of the transverse feed linear motor 5. The lifting hydraulic cylinder 72 is fixedly connected to the fixed frame 71, and the telescopic end of the lifting hydraulic cylinder 72 passes through the fixed frame 71 and is fixedly connected to the laser cutting head 73.

[0033] The lifting hydraulic cylinder 72 is provided with a flange, which is fixed to the fixing frame 71 by bolts. The laser beam generated by the laser generator 6 is transmitted to the laser cutting head 73, and the laser cutting head 73 processes the explosive charge 9 by multi-pulse laser cutting.

[0034] like Figure 1 As shown, the feeding module 8 includes a moving platform 81, a longitudinal feed linear motor 82, a clamping module 83, and an anti-deviation module 84. The two ends of the discharge port of the working platform 12 are respectively provided with longitudinal feed linear motors 82. The trays of the two longitudinal feed linear motors 82 are fixedly connected to the moving platform 81. The moving platform 81 is provided with a V-shaped groove. The clamping module 83 is fixedly connected to the moving platform 81, and the anti-deviation module 84 is fixedly connected to the moving platform 81.

[0035] The longitudinal feed linear motor 82 controls the movement of the moving platform 81 to deliver the explosive charge 9 to the bottom of the laser cutting head 73 at a fixed point. The explosive charge 9 is placed in the V-shaped groove of the moving platform 81. The V-shaped groove of the moving platform 81 can keep the explosive charge 9 horizontal. The clamping module 83 is used to fix the explosive charge 9 in the V-shaped groove. The anti-deviation module 84 is used to lift the explosive charge 9 away from the clamping module 83 to prevent deviation during cutting.

[0036] like Figure 3As shown, the clamping module 83 includes a clamping cylinder 831, a fixing block 832, and a chuck 833. Both ends of the chuck 833 are fixedly connected to the fixing block 832, and the end of the fixing block 832 away from the chuck 833 is fixedly connected to the telescopic end of the clamping cylinder 831. The clamping cylinder 831 is fixedly connected to the moving platform 81.

[0037] The fixing block 832 fixes the chuck 833 onto the clamping cylinder 831, and the two clamping cylinders 831 control the chuck 833 to clamp.

[0038] like Figure 4 As shown, the chuck 833 includes a concave block 8331 and a convex block 8332. The concave block 8331 is fixedly connected to the fixing block 832, and the convex block 8332 is fixedly connected to another fixing block 832.

[0039] The two clamping cylinders 831 facilitate the control of the clamping of the concave block 8331 and the convex block 8332.

[0040] like Figure 4 As shown, the concave block 8331 has clamping bosses at both ends, and a fitting groove is provided between the clamping bosses of the concave block 8331. The convex block 8332 has a fixing boss, and a clearance groove is provided at both ends of the convex block 8332. The clamping boss of the concave block 8331 and the clearance groove of the convex block 8332 can fit together, and the fixing boss of the convex block 8332 can fit together with the fitting groove of the concave block 8331.

[0041] The concave block 8331 and convex block 8332 can fit together to clamp explosive charges 9 of different sizes. The clamping boss of the concave block 8331 and the fixing boss of the convex block 8332 fix the explosive charge 9 through the inclined surface. The inclined surface provides a downward component force, so that the explosive charge 9 is close to the V-shaped groove of the moving platform 81.

[0042] like Figure 5 As shown, the anti-deviation module 84 includes an anti-deviation cylinder 841, a support block 842, a limiting component 843, and a pressing component 844. The two ends of the pressing component 844 are respectively hinged to the limiting component 843. The end of the limiting component 843 away from the pressing component 844 is fixedly connected to the support block 842. The end of the support block 842 away from the limiting component 843 is fixedly connected to the anti-deviation cylinder 841. The anti-deviation cylinder 841 is fixedly connected to the moving platform 81.

[0043] The support block 842 fixes the limiting component 843 on the anti-deviation cylinder 841. The limiting component 843 is used to lift the explosive charge 9, and the pressing component 844 can press the explosive charge 9 downward.

[0044] like Figure 6 , Figure 8 As shown, the limiting component 843 includes a mounting block 8431, an adjusting threaded post 8432, a connecting block 8433, an adjusting block 8434, a connecting rod 8435, a conical block 8436, and a mounting base 8437. The mounting block 8431 has a sliding groove. The adjusting threaded post 8432 passes through the sliding groove of the mounting block 8431 and is rotatably connected to the mounting base 8437. The adjusting threaded post 8432 is rotatably connected to the mounting block 8431. The adjusting block 8434 is fixedly connected to the end of the adjusting threaded post 8432 away from the mounting base 8437. The bottom of block 8434 is fitted to mounting block 8431. The connecting block 8433 is provided with a threaded hole, which is threadedly connected to the adjusting threaded post 8432. The connecting block 8433 is slidably connected to the sliding groove of the mounting block 8431. The end of the connecting block 8433 near the pressing component 844 is provided with a connecting bracket. The connecting block 8433 is hinged to the connecting rod 8435 through the connecting bracket. The end of the connecting rod 8435 away from the connecting block 8433 is hinged to the pressing component 844. The two ends of the mounting block 8431 are respectively provided with tapered blocks 8436.

[0045] The adjusting threaded column 8432 controls the connecting block 8433 to slide within the groove of the mounting block 8431. The adjusting block 8434 is used to rotate the adjusting threaded column 8432. A fixing nut is provided on the adjusting threaded column 8432. The fixing nut cooperates with the adjusting block 8434 to fix the adjusting threaded column 8432 on the mounting block 8431. The connecting block 8433 is used to control the lifting and lowering of the pressing assembly 844. Adjusting the height of the pressing assembly 844 clamps explosive charges 9 of different sizes. The connecting rod 8435 is used to connect the pressing assembly 844. Several conical blocks 8436 cooperate with the pressing assembly 844 to keep the explosive charges 9 horizontal. The conical blocks 8436 can clamp and support the explosive charges 9. When the conical blocks 8436 clamp, the explosive charges 9 will slide upward along the conical surface. The pressing assembly 844 presses the upward sliding explosive charges 9 down to the horizontal.

[0046] like Figure 6 As shown, the pressing assembly 844 includes a pressure block 8441, an arc-shaped spring piece 8442, a limiting threaded post 8443, an adjusting nut 8444, and a connecting post 8445. The two ends of the pressure block 8441 are hinged to the connecting rod 8435, and both ends of the pressure block 8441 are provided with U-shaped grooves. The pressure block 8441 is fixedly connected to the arc-shaped spring piece 8442. Both ends of the arc-shaped spring piece 8442 are provided with limiting holes, and the limiting holes of the arc-shaped spring piece 8442 are rotatably connected to the connecting post 8445. Both ends of the arc-shaped spring piece 8442 are provided with clearance grooves. The limiting threaded post 8443 passes through the U-shaped groove of the pressure block 8441 and the clearance groove of the arc-shaped spring piece 8442 in sequence. The limiting threaded post 8443 is fixedly connected to the connecting post 8445, and the end of the limiting threaded post 8443 away from the connecting post 8445 is threadedly connected to the adjusting nut 8444.

[0047] The arc-shaped spring piece 8442 fits into the explosive charge 9. The limiting threaded post 8443 can adjust the curvature of the arc-shaped spring piece 8442 to fit explosive charges 9 of different diameters. The limiting threaded post 8443 is connected to the arc-shaped spring piece 8442 through the connecting post 8445. When adjusting the curvature of the arc-shaped spring piece 8442, the limiting threaded post 8443 will slide on the pressure block 8441. The U-shaped groove of the pressure block 8441 facilitates the sliding of the limiting threaded post 8443. When the limiting threaded post 8443 is adjusted, it will rotate with the connecting post 8445. The clearance groove of the arc-shaped spring piece 8442 facilitates the rotation of the connecting post 8445. The limiting threaded post 8443 can be adjusted by rotating the adjusting nut 8444.

[0048] The working principle of this invention is as follows: The explosive charge 9 is placed on the V-groove of the moving platform 81 by the robotic arm. The clamping cylinder 831 controls the chuck 833 to clamp the explosive charge 9. The anti-deviation cylinder 841 controls the limiting component 843 to clamp and lift the explosive charge 9. The height of the pressing component 844 is controlled by rotating the adjusting threaded column 8432. The adjusting nut 8444 is rotated so that the arc-shaped spring piece 8442 can fit and press the explosive charge 9. The longitudinal feed linear motor 82 controls the moving platform 81 to move to the bottom of the laser cutting head 73. The laser cutting head 73 moves on the transverse feed linear motor 5 to cut. The cut explosive charge 9 falls from the discharge port of the working platform 12 into the inclined discharge groove of the platform base 11. The explosive charge 9 rolls from the other end of the inclined discharge groove of the platform base 11 into the finished product hopper 2.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-pulse femtosecond laser cutting device for cutting propellant charges, characterized in that: Laser cutting device for explosive charge (9) includes a platform base (11), a working platform (12), a finished product hopper (2), a column (3), a crossbeam (4), a transverse feed linear motor (5), a laser generator (6), a laser cutting module (7), and a feeding module (8). The platform base (11) is placed on a plane and has an inclined discharge groove. The platform base (11) is fixedly connected to the finished product hopper (2). The working platform (12) is set at the top of the platform base (11). The work platform (12) is provided with a discharge port. The discharge port of the work platform (12) is located above the inclined discharge groove of the platform base (11). The work platform (12) is fixedly connected to the feeding module (8). The work platform (12) is provided with columns (3) at both ends. The top of the two columns (3) is fixedly connected to the crossbeam (4). The crossbeam (4) is fixedly connected to the transverse feed linear motor (5). The laser generator (6) is fixedly connected to the tray of the transverse feed linear motor (5). The laser cutting module (7) is fixedly connected to the tray of the transverse feed linear motor (5). The feeding module (8) includes a moving platform (81), a longitudinal feed linear motor (82), a clamping module (83), and an anti-deviation module (84). The two ends of the discharge port of the working platform (12) are respectively provided with longitudinal feed linear motors (82). The trays of the two longitudinal feed linear motors (82) are fixedly connected to the moving platform (81). The moving platform (81) is provided with a V-groove. The clamping module (83) is fixedly connected to the moving platform (81). The anti-deviation module (84) is fixedly connected to the moving platform (81). The anti-deviation module (84) includes an anti-deviation cylinder (841), a support block (842), a limiting component (843), and a pressing component (844). The two ends of the pressing component (844) are respectively hinged to the limiting component (843). The end of the limiting component (843) away from the pressing component (844) is fixedly connected to the support block (842). The end of the support block (842) away from the limiting component (843) is fixedly connected to the anti-deviation cylinder (841). The anti-deviation cylinder (841) is fixedly connected to the moving platform (81).

2. The multi-pulse femtosecond laser cutting device for cutting propellant columns according to claim 1, characterized in that: The laser cutting module (7) includes a fixed frame (71), a lifting hydraulic cylinder (72) and a laser cutting head (73). The fixed frame (71) is fixedly connected to the tray of the transverse feed linear motor (5). The lifting hydraulic cylinder (72) is fixedly connected to the fixed frame (71). The telescopic end of the lifting hydraulic cylinder (72) passes through the fixed frame (71) and is fixedly connected to the laser cutting head (73).

3. The multi-pulse femtosecond laser cutting device for cutting propellant columns according to claim 2, characterized in that: The clamping module (83) includes a clamping cylinder (831), a fixing block (832), and a chuck (833). Both ends of the chuck (833) are fixedly connected to the fixing block (832). The end of the fixing block (832) away from the chuck (833) is fixedly connected to the telescopic end of the clamping cylinder (831). The clamping cylinder (831) is fixedly connected to the moving platform (81).

4. The multi-pulse femtosecond laser cutting device for cutting propellant columns according to claim 3, characterized in that: The chuck (833) includes a concave block (8331) and a convex block (8332), the concave block (8331) being fixedly connected to a fixing block (832), and the convex block (8332) being fixedly connected to another fixing block (832).

5. The multi-pulse femtosecond laser cutting device for drug cartridges according to claim 4, characterized in that: The concave block (8331) has clamping bosses at both ends, and a fitting groove is provided between the clamping bosses of the concave block (8331). The convex block (8332) has a fixing boss, and a clearance groove is provided at both ends of the convex block (8332). The clamping boss of the concave block (8331) and the clearance groove of the convex block (8332) can fit together, and the fixing boss of the convex block (8332) can fit together with the fitting groove of the concave block (8331).

6. The multi-pulse femtosecond laser cutting device for cutting propellant columns according to claim 5, characterized in that: The limiting component (843) includes a mounting block (8431), an adjusting threaded post (8432), a connecting block (8433), an adjusting block (8434), a connecting rod (8435), a conical block (8436), and a mounting base (8437). The mounting block (8431) has a sliding groove. The adjusting threaded post (8432) passes through the sliding groove of the mounting block (8431) and is rotatably connected to the mounting base (8437). The adjusting threaded post (8432) is rotatably connected to the mounting block (8431). The adjusting block (8434) is fixedly connected to the end of the adjusting threaded post (8432) away from the mounting base (8437). The bottom of the block (8434) is attached to the mounting block (8431). The connecting block (8433) is provided with a threaded hole. The threaded hole of the connecting block (8433) is threadedly connected to the adjusting threaded column (8432). The connecting block (8433) is slidably connected to the sliding groove of the mounting block (8431). The end of the connecting block (8433) near the pressing component (8444) is provided with a connecting bracket. The connecting block (8433) is hinged to the connecting rod (8435) through the connecting bracket. The end of the connecting rod (8435) away from the connecting block (8433) is hinged to the pressing component (8444). The two ends of the mounting block (8431) are respectively provided with conical blocks (8436).

7. The multi-pulse femtosecond laser cutting device for cutting propellant charges according to claim 6, characterized in that: The pressing assembly (844) includes a pressure block (8441), an arc-shaped spring sheet (8442), a limiting threaded post (8443), an adjusting nut (8444), and a connecting post (8445). The pressure block (8441) is hinged to the connecting rod (8435) at both ends. U-shaped grooves are provided at both ends of the pressure block (8441). The pressure block (8441) is fixedly connected to the arc-shaped spring sheet (8442). Limiting holes are provided at both ends of the arc-shaped spring sheet (8442). The limiting hole of the arc-shaped spring (8442) is rotatably connected to the connecting post (8445). The two ends of the arc-shaped spring (8442) are respectively provided with clearance grooves. The limiting threaded post (8443) passes through the U-shaped groove of the pressure block (8441) and the clearance groove of the arc-shaped spring (8442) in sequence. The limiting threaded post (8443) is fixedly connected to the connecting post (8445). The end of the limiting threaded post (8443) away from the connecting post (8445) is threadedly connected to the adjusting nut (8444).

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