Aircraft connecting band plate punching device

Abstract

The invention relates to the field of aircraft accessory machining equipment, in particular to an aircraft connecting band plate punching device which comprises a portal frame fixed to a base, a motor and a lifting air cylinder are fixed to a cross beam of the portal frame, a lifting plate is fixed to the piston rod end of the lifting air cylinder, and a punching die is rotationally connected to the lifting plate through a fixed shaft. A grinding assembly is arranged on the side wall of the middle of the stamping die, the motor is in transmission connection with the stamping die, a rotating shaft arranged in the vertical direction is rotationally connected to the base through a fixed shaft, the lifting plate is in transmission connection with the rotating shaft, and the rotating shaft penetrates through and is fixedly connected to the center of a rotating disc; a clamping assembly used for fixing the connecting band plate is arranged on the stamping table, and a bottom die corresponding to the stamping die is arranged on the stamping table. According to the aircraft connecting band plate punching device, automatic circulation of punching, hole grinding and feeding of the connecting band plate is achieved, the working efficiency is greatly improved, and the labor intensity is reduced.

Description

Technical Field

[0001] The invention relates to the field of aircraft accessory processing equipment, in particular to an aircraft connecting belt plate punching device. Background Art

[0002] In the production process of aircraft connecting strips, it is necessary to punch holes on the preliminarily processed sheet materials so that the surface of the sheet materials has connection holes for connection and fixation, and then grind and polish the holed connecting strips. Therefore, the existing processing procedures are relatively cumbersome and the production efficiency is not high. In view of this, we propose an aircraft connecting strip punching device. Summary of the invention

[0003] The purpose of the present invention is to provide a punching device for connecting strips of aircraft to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a punching device for connecting strips of aircraft, comprising a gantry fixed on a base, a motor and a lifting cylinder fixed on the crossbeam of the gantry, a lifting plate fixed on the piston rod end of the lifting cylinder, and a die is connected to the lifting plate for fixed-axis rotation, and a grinding assembly is arranged on the middle side wall of the die, the motor is connected to the die for transmission, a rotating shaft arranged in a vertical direction is connected to the fixed-axis rotation on the base, and the lifting plate is connected to the rotating shaft for transmission, the rotating shaft passes through and is fixedly connected to the center of the turntable, a plurality of punching tables are fixed on the turntable at equal intervals along the circumferential direction, and a clamping assembly for fixing the connecting strip is arranged on the punching table, and a bottom die corresponding to the punching die is arranged on the punching table.

[0004] Preferably, the upper end of the die is coaxially fixedly connected to the polygonal rod, the upper end of the polygonal rod is sleeved and slidably connected with a pipe shaft, the pipe shaft is fixedly rotatably connected to the crossbeam of the gantry, and the motor is transmission-connected to the pipe shaft, a touch switch is fixed on the gantry, and the lifting plate is in contact with the touch switch.

[0005] Preferably, the grinding assembly includes a groove formed on the peripheral wall of the die, and the direction of the groove is arranged parallel to the central axis direction of the die, a grinding block is slidably connected inside the groove, and the grinding block is connected to the inner wall of the groove through spring four, and sliding grooves are formed on the upper and lower side walls of the groove, and a slider is slidably connected in the sliding groove, and the two sliders are respectively fixedly connected to the upper and lower ends of the grinding block, and the side contour of the grinding block toward the outside of the groove is an isosceles trapezoid.

[0006] Preferably, a suspension rod is fixed on the crossbeam of the gantry, and the lower end of the suspension rod is rotatably connected to a ratchet, one end of the lifting plate is fixed with a rack three, the rack three is meshingly connected to the outer ring of the ratchet, and the inner ring of the ratchet is transmission-connected to the upper end of the rotating shaft through a bevel gear set.

[0007] Preferably, the clamping assembly includes two slideways symmetrically opened at both ends of the upper surface of the stamping table, and a rack two is slidably connected in the slideway two, a pressure plate is fixed to the upper end of the rack two, and two slideways one are opened on the bottom surface of the stamping table, the two slideways one are arranged one by one with the two slideways two, a rack one is slidably connected in the slideway one, the upper end of the rack one is connected to the upper end of the slideway one through a spring three, a top block is fixed to the lower end of the rack one, the slideway one is connected to the corresponding slideway two through a channel, and the channel is opened in the stamping table, a gear one is rotatably connected to the fixed axis in the channel, and the gear one is meshed with the rack one and the rack two at the same time.

[0008] Preferably, two brackets are fixed on the base, and the two brackets are located directly below the lifting plate, with a gap between the two brackets. Both sides of the upper end of the bracket are arc surface structures, and when the turntable drives the stamping table to rotate directly above the two brackets, the upper ends of the two brackets correspond to and are in contact with the two top blocks at the bottom of the stamping table.

[0009] Preferably, a through hole is opened in the middle of the punching table, and the bottom mold is arranged in the through hole. When the punching table is located directly below the lifting plate, the punching die and the through hole on the punching table share the same central axis, and the two pressing plates are symmetrically located on both sides above the through hole.

[0010] Preferably, the bottom mold is symmetrically composed of two half-molds with the same structure, and the cross-section of the half-mold is semi-circular. When the two half-molds are matched, their central axes coincide with and share the through hole. The outer arc surface of the half-mold is vertically fixedly connected with a sliding rod, and the end of the sliding rod away from the half-mold is a wedge-shaped structure, and the wedge-shaped surface is set downward. A slideway three corresponding to the sliding rod is opened on the inner side wall of the through hole, and the sliding rod is inserted and slidably connected in the corresponding slideway three, and the half-mold is connected to the inner wall of the through hole through spring two.

[0011] Preferably, two slides four are provided on the bottom surface of the stamping table, and the two slides four are arranged in a one-to-one correspondence with the two slides three, and the slide four is perpendicular to and connected to the corresponding slide three, a U-shaped frame is provided at the bottom of the stamping table, and the two ends of the U-shaped frame are respectively inserted into and slidably connected in the two slides four, the U-shaped frame is connected to the bottom surface of the stamping table through a spring one, the U-shaped frame can pass through the gap between the two brackets, and the end of the U-shaped frame located in the slide four is a wedge-shaped structure, and the wedge-shaped surface is arranged facing the through hole.

[0012] Preferably, a protrusion is rotatably connected to the middle of the U-shaped frame, and the upper end of the protrusion is a spherical structure or a conical structure. The protrusion and the bottom mold share the same central axis. A touch switch 2 is fixed on one of the brackets, and the U-shaped frame is in buckling contact with the touch switch 2.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a punching die is driven by a lifting cylinder to punch holes in a connecting strip plate on a punching table on a bracket, and after punching, a motor is started to drive the punching die to rotate, so that the punching die drives a grinding component to grind the hole, and after grinding, a turntable is driven to rotate to feed the material, and this cycle is repeated to realize an automated cycle of punching, grinding and feeding the connecting strip plate, thereby greatly improving work efficiency and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 1 ; Figure 2 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 2 ; Figure 3 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 3 ; Figure 4 The schematic diagram of the cross-sectional structure of the general assembly of the present invention is shown in FIG. Figure 4 ; Figure 5 for Figure 4 A is an enlarged structural diagram; Figure 6 for Figure 5 The enlarged structural diagram at B in FIG. Figure 7 It is a side view of the upper end structure of the bracket in the present invention; Figure 8 It is a top view of the punching table structure in the present invention.

[0015] In the figure: 1. base; 2. gantry; 3. rotating shaft; 4. turntable; 5. punching table; 6. suspension rod; 7. ratchet; 8. bevel gear set; 9. lifting cylinder; 10. lifting plate; 11. motor; 12. pipe shaft; 13. punching die; 14. bracket; 15. touch switch 1; 16. touch switch 2; 17. polygonal rod; 18. spring 1; 19. top block; 20. rack 1; 21. gear Wheel one; 22, rack two; 23, pressure plate; 24, bottom mold; 25, through hole; 26, slide two; 27, channel; 28, slide one; 29, slide three; 30, slide bar; 31, spring two; 32, slide four; 33, spring three; 34, groove; 35, grinding block; 36, spring four; 37, slide groove; 38, slider; 39, bump; 40, U-shaped frame; 41, rack three. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figures 1 to 8 The present invention provides a technical solution: a device for punching holes in an aircraft connecting strip, comprising a gantry 2 fixed on a base 1, a motor 11 and a lifting cylinder 9 fixed on the crossbeam of the gantry 2, a lifting plate 10 fixed on the piston rod end of the lifting cylinder 9, and a die 13 is rotatably connected to the lifting plate 10, and a grinding assembly is arranged on the middle side wall of the die 13, the motor 11 is transmission-connected to the die 13, a rotating shaft 3 arranged in a vertical direction is rotatably connected to the base 1, and the lifting plate 10 is transmission-connected to the rotating shaft 3, the rotating shaft 3 passes through and is fixedly connected to the center of a turntable 4, a plurality of punching tables 5 are fixed at equal intervals along the circumferential direction of the turntable 4, and a clamping assembly for fixing the connecting strip is arranged on the punching table 5, and a bottom die 24 corresponding to the die 13 is arranged on the punching table 5.

[0018] In this embodiment, the upper end of the die 13 is coaxially fixedly connected to the polygonal rod 17, the upper end of the polygonal rod 17 is sleeved and slidably connected with a tube shaft 12, the tube shaft 12 is fixedly rotatably connected to the crossbeam of the gantry 2, and the motor 11 is transmission-connected to the tube shaft 12, a touch switch 15 is fixed on the gantry 2, and the lifting plate 10 is in contact with the touch switch 15.

[0019] In this embodiment, the grinding assembly includes a groove 34 opened on the peripheral wall of the die 13, and the direction of the groove 34 is set parallel to the central axis direction of the die 13. A grinding block 35 is slidably connected inside the groove 34, and the grinding block 35 is connected to the inner wall of the groove 34 through a spring 36. The upper and lower side walls of the groove 34 are both provided with a slide groove 37, and a slider 38 is slidably connected in the slide groove 37. The two sliders 38 are respectively fixedly connected to the upper and lower ends of the grinding block 35, and the side contour of the grinding block 35 toward the outside of the groove 34 is an isosceles trapezoid.

[0020] In this embodiment, a suspension rod 6 is fixed on the crossbeam of the gantry 2, and the lower end of the suspension rod 6 is connected to a ratchet 7 for fixed-axis rotation. A rack three 41 is fixed to one end of the lifting plate 10, and the rack three 41 is meshedly connected to the outer ring of the ratchet 7. The inner ring of the ratchet 7 is transmission-connected to the upper end of the rotating shaft 3 through a bevel gear set 8.

[0021] In this embodiment, the clamping assembly includes a slideway 26 symmetrically opened at both ends of the upper surface of the stamping table 5, and a rack 22 is slidably connected in the slideway 26, and a pressure plate 23 is fixed to the upper end of the rack 22. Two slideways 28 are opened on the bottom surface of the stamping table 5, and the two slideways 28 are arranged one-to-one with the two slideways 26. A rack 20 is slidably connected in the slideway 28, and the upper end of the rack 20 is connected to the upper end of the slideway 28 through a spring 33, and a top block 19 is fixed to the lower end of the rack 20. The slideway 28 is connected to the corresponding slideway 26 through a channel 27, and the channel 27 is opened in the stamping table 5. A gear 21 is rotatably connected to the fixed axis in the channel 27, and the gear 21 is meshed with the rack 20 and the rack 22 at the same time.

[0022] In this embodiment, two brackets 14 are fixed on the base 1, and the two brackets 14 are located directly below the lifting plate 10, with a gap between the two brackets 14. The upper ends of the brackets 14 are arc surface structures on both sides, and when the turntable 4 drives the stamping table 5 to rotate to directly above the two brackets 14, the upper ends of the two brackets 14 correspond to and are in contact with the two top blocks 19 at the bottom of the stamping table 5.

[0023] In this embodiment, a through hole 25 is opened in the middle of the stamping table 5, and the bottom mold 24 is arranged in the through hole 25. When the stamping table 5 is located directly below the lifting plate 10, the punching die 13 and the through hole 25 on the stamping table 5 share the same central axis, and the two pressing plates 23 are symmetrically located on both sides above the through hole 25.

[0024] In this embodiment, the bottom mold 24 is symmetrically composed of two half-molds with the same structure, and the cross-section of the half-mold is semi-circular. When the two half-molds are matched, their central axes coincide with and share the through hole 25. The outer arc surface of the half-mold is vertically fixedly connected with a slide rod 30, and the end of the slide rod 30 away from the half-mold is a wedge-shaped structure, and the wedge-shaped surface is set downward. A slideway three 29 corresponding to the slide rod 30 is opened on the inner side wall of the through hole 25, and the slide rod 30 is inserted and slidably connected in the corresponding slideway three 29, and the half-mold is connected to the inner wall of the through hole 25 through a spring two 31.

[0025] In this embodiment, two slideways four 32 are provided on the bottom surface of the punching table 5, and the two slideways four 32 are arranged one by one with the two slideways three 29, and the slideway four 32 is perpendicular to and connected with the corresponding slideway three 29, and a U-shaped frame 40 is arranged at the bottom of the punching table 5, and the two ends of the U-shaped frame 40 are respectively inserted and slidably connected in the two slideways four 32, and the U-shaped frame 40 is connected to the bottom surface of the punching table 5 through a spring one 18, and the U-shaped frame 40 can pass through the gap between the two brackets 14, and the end of the U-shaped frame 40 located in the slideway four 32 is a wedge-shaped structure, and the wedge-shaped surface is arranged toward the through hole 25, and the middle part of the U-shaped frame 40 is connected to a protrusion 39 for fixed-axis rotation, and the upper end of the protrusion 39 is a spherical structure or a conical structure, and the protrusion 39 shares the same central axis with the bottom mold 24, and a touch switch two 16 is fixed on one of the brackets 14, and the U-shaped frame 40 is in buckling contact with the touch switch two 16.

[0026] Working principle and advantages of the present invention: When the aircraft connecting strip plate punching device is used, the working process is as follows: like Figures 1 to 8As shown, the lifting cylinder 9 is controlled by the controller to work, so that the lifting cylinder 9 drives the lifting plate 10 to move downward, thereby making the lifting plate 10 drive the die 13 to move downward. When the lifting plate 10 moves downward, it drives the rack three 41 to move downward. After the rack three 41 moves downward and engages with the outer ring of the ratchet 7, it cannot drive the inner ring to rotate through the outer ring of the ratchet 7, thereby cannot drive the rotating shaft 3 to rotate. In this way, it is ensured that the turntable 4 is kept stationary when punching the connecting strip plate. After the die 13 moves downward, the punching position at the bottom die 24 is punched, and the punched waste is discharged from the lower end of the bottom die 24, wherein the upper end of the protrusion 39 is a spherical structure or a conical structure, so as to prevent the waste from falling on the protrusion 39, thereby ensuring the normal discharge of the waste and maintaining normal processing operations. After the die 13 completes the punching, the lifting plate 10 continues to drive the die 13 to move downward. When the lower end of the die 13 contacts the upper end of the protrusion 39, the lifting plate 10 Just when it contacts with the touch switch 15 and the grinding block 35 is about to enter the punched hole, the touch switch 15 transmits the touch signal of the lifting plate 10 to the controller, and the controller starts the motor 11, so that the motor 11 drives the multi-faceted rod 17 to rotate through the tube shaft 12, so that the multi-faceted rod 17 drives the die 13 and the grinding block 35 thereon to rotate, and the lifting plate 10 drives the die 13 to continue to move downward, so that the die 13 applies downward pressure to the protrusion 39, so that the protrusion 39 drives the U-shaped frame 40 to move downward and stretch the spring. 18, so that the spring 18 obtains a restoring force, so that the upper end of the U-shaped frame 40 is separated from the wedge-shaped end of the slide bar 30, so that the two half molds are moved away from each other under the action of the spring 2 31, so as to avoid the grinding block 35 from causing friction damage to the inner wall of the bottom mold 24. The punch 13 drives the protrusion 39 to move downward and drives the grinding block 35 to pass through the hole, so that the side contour of the grinding block 35 outside the groove 34 grinds the upper and lower ports and the inner wall of the hole, so that the hole is automatically polished after punching, which saves time and effort. The process is simplified. When the U-shaped frame 40 contacts the touch switch 16, the touch switch 16 transmits the touch signal of the U-shaped frame 40 to the controller. The controller controls the lifting cylinder 9 to retract the piston rod and reset it, so that the lifting plate 10 drives the punch 13 to move up and reset. During the upward movement of the punch 13, the grinding block 35 grinds the hole again. After the punch 13 moves up, the U-shaped frame 40 is driven to move up under the restoring force of the spring 18. When the upper wedge surface of the U-shaped frame 40 contacts the wedge surface of the corresponding slide rod 30, the U-shaped frame 40 is pressed against the wedge surface of the slide rod 30. When in contact, the slide bar 30 pushes the half mold toward the center of the through hole 25, and stretches the spring 2 31, so that the bottom mold 24 is reset. When the lifting plate 10 moves up, it contacts the touch switch 15 again, and the grinding block 35 just leaves the polished hole. The touch switch 15 transmits the touch signal of the lifting plate 10 to the controller, and the controller stops the motor 11, so that the die 13 stops rotating, saving energy. When the lower end of the die 13 just leaves the polished hole, the rack 3 41 just meshes with the outer ring of the ratchet 7.At this time, rack three 41 continues to move upward, driving the outer ring of the ratchet 7 to rotate, so that the outer ring of the ratchet 7 can drive the inner ring to rotate through the pawl, so that the inner ring of the ratchet 7 drives the rotating shaft 3 to rotate through the bevel gear set 8, and the rotating shaft 3 drives the turntable 4 and each punching table 5 thereon to rotate. When the punching table 5 leaves the bracket 14 after the punching is completed, under the action of spring three 33, the rack one 20 drives the top block 19 to move downward, so that the rack one 20 drives the rack two 22 and the pressure plate 23 thereon to move upward through the gear one 21, thereby releasing the fixation of the punched connecting strip plate, so that the punched connecting strip plate can be removed from the punching table 5 and replaced with the connecting strip plate to be punched. At the same time, the turntable 4 also rotates the next punching table 5 equipped with the connecting strip plate to be punched onto the bracket 14. When the top block 19 and the arc surface at the upper end of the bracket 14 are aligned, the fixing of the connecting strip plate to be punched is completed. When the structure contacts, the top block 19 receives the reaction force of the bracket 14 and drives the rack 1 20 to move up and compress the spring 3 33, so that the spring 3 33 obtains a restoring force. While the rack 1 20 moves up, it drives the rack 2 22 and the pressure plate 23 at its upper end to move down through the gear 1 21. When the top block 19 is located at the upper end of the bracket 14, the pressure plate 23 just presses and fixes the connecting strip, and the bottom die 24 is just located directly below the die 13. At the same time, the lifting cylinder 9 drives the lifting plate 10 to complete the reset. The controller controls the lifting cylinder 9 to extend the piston rod again and drives the die 13 to move down through the lifting plate 10. This cycle is repeated to realize the automatic cycle of punching, grinding and feeding of the connecting strip, which greatly improves work efficiency and reduces labor intensity. It only needs to place the connecting strip to be processed on the empty punching table 5.

[0027] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0028] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An aircraft connecting plate punching device, comprising a gantry (2) fixed on a base (1), characterized in that: A motor (11) and a lifting cylinder (9) are fixed on the crossbeam of the gantry (2); a lifting plate (10) is fixed on the piston rod end of the lifting cylinder (9); a die (13) is rotatably connected to the lifting plate (10); a grinding assembly is arranged on the middle side wall of the die (13); the motor (11) is connected to the die (13) in a transmission manner; a rotating shaft (3) arranged in a vertical direction is rotatably connected to the base (1); the lifting plate (10) is connected to the rotating shaft (3) in a transmission manner; the rotating shaft (3) passes through and is fixedly connected to the center of the turntable (4); a plurality of punching tables (5) are fixedly fixed along the circumference of the turntable (4) at equal intervals; a clamping assembly for fixing the connecting strip is arranged on the punching table (5); and a bottom die (24) corresponding to the punching die (13) is arranged on the punching table (5).

2. The aircraft connecting strip punching device according to claim 1, characterized in that: The upper end of the punching die (13) is coaxially fixedly connected to a polygonal rod (17), the upper end of the polygonal rod (17) is sleeved and slidably connected to a tube shaft (12), the tube shaft (12) is fixedly rotatably connected to a crossbeam of a gantry (2), and a motor (11) is transmission-connected to the tube shaft (12), a touch switch (15) is fixed on the gantry (2), and the lifting plate (10) is in contact with the touch switch (15).

3. The aircraft connecting strip punching device according to claim 1, characterized in that: The grinding assembly comprises a groove (34) formed on the peripheral wall of the punch (13), and the direction of the groove (34) is arranged parallel to the central axis direction of the punch (13); a grinding block (35) is slidably connected inside the groove (34), and the grinding block (35) is connected to the inner wall of the groove (34) through a spring (36); upper and lower side walls of the groove (34) are formed with a slide groove (37), and a slider (38) is slidably connected inside the slide groove (37); two sliders (38) are respectively fixedly connected to the upper and lower ends of the grinding block (35); and the side contour of the grinding block (35) toward the outside of the groove (34) is an isosceles trapezoid.

4. The aircraft connecting strip punching device according to claim 1, characterized in that: A suspension rod (6) is fixed on the crossbeam of the gantry (2), and a ratchet wheel (7) is rotatably connected to the lower end of the suspension rod (6). A rack three (41) is fixed to one end of the lifting plate (10), and the rack three (41) is meshingly connected to the outer ring of the ratchet wheel (7). The inner ring of the ratchet wheel (7) is transmission-connected to the upper end of the rotating shaft (3) via a bevel gear set (8).

5. The aircraft connecting strip punching device according to claim 1, characterized in that: The clamping assembly comprises a second slideway (26) symmetrically arranged at both ends of the upper surface of the punching table (5), and a second rack (22) is slidably connected in the second slideway (26), and a pressure plate (23) is fixed to the upper end of the second rack (22). The bottom surface of the punching table (5) is provided with two first slideways (28), and the two first slideways (28) are arranged in a one-to-one correspondence with the two second slideways (26). The first slideway (28) is slidably connected to a rack (20), and the rack The upper end of rack one (20) is connected to the upper end of slideway one (28) through spring three (33), a top block (19) is fixed to the lower end of rack one (20), slideway one (28) is connected to corresponding slideway two (26) through a channel (27), and the channel (27) is opened in the punching table (5), a fixed axis is rotatably connected to gear one (21) in the channel (27), and gear one (21) is meshed with rack one (20) and rack two (22) at the same time.

6. The aircraft connecting strip punching device according to claim 5, characterized in that: Two brackets (14) are fixed on the base (1), and the two brackets (14) are located directly below the lifting plate (10), with a gap between the two brackets (14), and both sides of the upper ends of the brackets (14) are arc surface structures, and when the turntable (4) drives the punching table (5) to rotate to directly above the two brackets (14), the upper ends of the two brackets (14) correspond to and are in contact with the two top blocks (19) at the bottom of the punching table (5).

7. The aircraft connecting strip punching device according to claim 6, characterized in that: A through hole (25) is provided in the middle of the punching platform (5), and the bottom die (24) is arranged in the through hole (25). When the punching platform (5) is located directly below the lifting plate (10), the punching die (13) and the through hole (25) on the punching platform (5) share the same central axis, and the two pressing plates (23) are symmetrically located on both sides above the through hole (25).

8. The aircraft connecting strip punching device according to claim 7, characterized in that: The bottom mold (24) is symmetrically composed of two half molds with the same structure, and the cross-section of the half mold is semi-circular. When the two half molds are matched, their central axes coincide with and are shared with the through hole (25). The outer arc surface of the half mold is vertically fixedly connected to a slide rod (30), and the end of the slide rod (30) away from the half mold is a wedge-shaped structure, and the wedge-shaped surface is arranged downward. A slideway three (29) corresponding to the slide rod (30) is opened on the inner side wall of the through hole (25), and the slide rod (30) is inserted and slidably connected in the corresponding slideway three (29). The half mold is connected to the inner wall of the through hole (25) through a spring two (31).

9. The aircraft connecting strip punching device according to claim 8, characterized in that: The bottom surface of the punching table (5) is provided with two slideways four (32), and the two slideways four (32) are arranged in a one-to-one correspondence with the two slideways three (29), and the slideway four (32) is arranged vertically and in communication with the corresponding slideway three (29). A U-shaped frame (40) is arranged at the bottom of the punching table (5), and the two ends of the U-shaped frame (40) are respectively inserted into and slidably connected in the two slideways four (32). The U-shaped frame (40) is connected to the bottom surface of the punching table (5) through a spring one (18), and the U-shaped frame (40) can pass through the gap between the two brackets (14). The end of the U-shaped frame (40) located in the slideway four (32) is a wedge-shaped structure, and the wedge-shaped surface is arranged toward the through hole (25).

10. The aircraft connecting strip punching device according to claim 9, characterized in that: A protrusion (39) is rotatably connected to the middle of the U-shaped frame (40) via a fixed axis, and the upper end of the protrusion (39) is a spherical structure or a conical structure. The protrusion (39) and the bottom mold (24) share the same central axis. A second touch switch (16) is fixed on one of the brackets (14), and the U-shaped frame (40) is in abutment contact with the second touch switch (16).

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