Piezoelectric steering engine device for miniature guidance bullet

Abstract

The invention relates to a piezoelectric steering engine device for a miniature guidance bullet, and belongs to the technical field of steering engine devices. A piezoelectric ceramic group and a steering engine transmission group are arranged in a shell; one end of the piezoelectric ceramic is connected with the piezoelectric ceramic shell, and the other end of the piezoelectric ceramic is connected with the piezoelectric ceramic cap; mounting grooves are machined in the plate frame, receding holes are machined in the positions, corresponding to the mounting grooves, of the plate frame, the communicated positions between the mounting grooves cut off the cross-shaped holes, the ceramic driving plates are correspondingly arranged in the mounting grooves, and the exposed plate frame long shafts and the exposed plate frame short shafts are connected with the corresponding ceramic driving plates. The ceramic driving plate is matched with the piezoelectric ceramic cap and the swinging baffle plate; swinging baffles are connected to the two sides of the swinging crankshaft and the swinging shaft respectively, and tail vanes are connected to the extending ends of the swinging crankshaft and the swinging shaft; and the spring is connected with the swinging baffle and the spring seat. According to the method, the space in the bullet is reasonably and efficiently used, and the requirement for correcting the two-dimensional trajectory of the miniature guided bullet is met under the limitation of the internal extremely narrow space.

Description

TECHNICAL FIELD

[0001] The application relates to a piezoelectric rudder device for a guided bullet, and belongs to the technical field of rudder devices. BACKGROUND

[0002] The micro guided bullet is intelligent ammunition with functions of sensing, processing, decision-making and execution, and is usually used in cooperation with a sniper rifle. The ammunition has high precision and stability, can guarantee the effectiveness, and can minimize the influence on the surrounding environment and personnel.

[0003] The micro guided bullet has a rudder device, which mainly adjusts the flight trajectory of the bullet, guarantees the flight stability, and improves the shooting precision. The design difficulty of the rudder device lies in the limitation of the extremely small space in the bullet. On the one hand, the complex structure of the rudder is difficult to install in the small space in the bullet. On the other hand, the small size of the rudder leads to small driving capacity, which is difficult to meet the driving requirements.

[0004] The rudder device for the micro guided bullet is roughly divided into two types: piezoelectric driving and electromagnetic driving. The piezoelectric driving requires a high voltage and needs to be used in cooperation with a voltage boosting circuit. Meanwhile, the displacement of the piezoelectric material is micron level, and multiple pieces need to be stacked and used in cooperation with a displacement amplification device, which increases the difficulty of the arrangement of the rudder device in the bullet. Although the electromagnetic driving has large displacement and low power requirement, the speed and precision of the movement are low, and the electromagnetic rudder in the prior art has the problem of insufficient driving capacity caused by size limitation.

[0005] Therefore, it is urgent to provide a piezoelectric rudder device for a micro guided bullet to solve the above technical problems. SUMMARY

[0006] To solve the above problems, a piezoelectric rudder device for a micro guided bullet is provided. In the following, a brief summary about the application is given to provide a basic understanding of some aspects of the application. It should be understood that this summary is not an exhaustive summary of the application. It is not intended to determine the key or important parts of the application, nor to limit the scope of the application.

[0007] The technical scheme of the application is as follows: A piezoelectric rudder device for a micro guided bullet comprises: A piezoelectric ceramic group and a rudder transmission group are arranged in the shell. One end of four piezoelectric ceramics of the piezoelectric ceramic group is connected with a piezoelectric ceramic shell, and the other end of the piezoelectric ceramic is connected with a piezoelectric ceramic cap. The plate frame has a cross-shaped hole, four installation grooves are processed on the plate frame, and an avoiding hole is processed on the plate frame at a position corresponding to the installation grooves; the avoiding hole is communicated between adjacent installation grooves, the cross-shaped hole is cut off at a position communicated between the installation grooves, the long axis and the short axis of the plate frame installed at the position are exposed outside, and four circumferentially arrayed ceramic drive plates are correspondingly arranged in the installation grooves. The left side of the ceramic drive plate is matched with the piezoelectric ceramic cap penetrating through the avoiding hole, and the right side of the ceramic drive plate is matched with the left side of the swing baffle. The swing crankshaft and the swing shaft arranged in a cross shape are connected with the shell, the swing baffle is connected to the two sides of the swing crankshaft and the swing shaft respectively, the swing crankshaft and the swing shaft are extended out of the shell, and the extended ends of the swing crankshaft and the swing shaft are connected with the tail rudders. One end of the four springs is connected with the corresponding swing baffle, and the other end of the spring is connected with the spring seat.

[0008] Preferably, the piezoelectric ceramic shell comprises a mounting plate and four clamps, the clamps are cuboid cylinder structures, the four walls of the cuboid cylinder structure are separated from each other, the cuboid cylinder structure has elasticity, the four clamps are uniformly arranged, one end of the clamp is fixedly connected with the mounting plate, and one end of the piezoelectric ceramic is inserted into the clamp and clamped and mounted by the four walls of the cuboid cylinder structure.

[0009] Preferably, threaded holes are processed on the mounting plate of the piezoelectric ceramic shell at positions corresponding to the clamps, and ceramic adjusting bolts penetrate through the threaded holes to tightly press the end of the piezoelectric ceramic.

[0010] Preferably, the piezoelectric ceramic cap is h-shaped, and the other end of the piezoelectric ceramic is inserted into the groove in one end of the piezoelectric ceramic cap.

[0011] Preferably, the other end of the four springs is connected to the spring seat through the spring top piece, and the spring is a micro spring.

[0012] Preferably, the end of the ceramic drive plate has a right side protrusion, and the distance between the right side protrusion of the ceramic drive plate and the swing baffle is S=0.1mm.

[0013] Preferably, the swing crankshaft is a concave shaft, the swing shaft penetrates through the concave section of the swing crankshaft, and the four tail rudders are circumferentially arrayed; a first cutting surface is processed on the connecting section of the swing crankshaft and the swing baffle and the tail rudder, so that the cross section of the first connecting section is D-shaped, the connecting hole of the swing baffle and the tail rudder and the swing crankshaft is a D-shaped hole matched with the connecting section; a second cutting surface is processed on the connecting section of the swing shaft and the swing baffle and the tail rudder, so that the cross section of the second connecting section is D-shaped, and the connecting hole of the swing baffle and the tail rudder and the swing shaft is a D-shaped hole matched with the connecting section.

[0014] Preferably, the shell comprises a tail shell, a tail seal, four clamps arranged uniformly in the circumferential direction are arranged on the inner side of the end of the tail shell, and a boss corresponding to the clamps is arranged on the inner side of the end of the tail seal, so as to realize the connection of the tail shell and the tail seal; each group of clamps comprises two independent elastic pieces, a first arc groove is arranged between the two elastic pieces of the tail shell, a second arc groove is arranged at a position corresponding to the first arc groove of the tail shell on the end of the tail seal, the first arc groove and the second arc groove correspond to form a mounting hole, the swing shaft is rotatably connected with the shell through the upper and lower mounting holes, the swing shaft is rotatably connected with the shell through the front and rear mounting holes, the mounting plate and the frame of the piezoelectric ceramic shell are connected with the tail shell, the spring seat is connected with the tail seal, and the swing end of the tail rudder is arranged on the outer side corresponding to the tail seal.

[0015] Preferably, the long axis of the frame sequentially passes through the upper side of the cross-shaped hole, the first ceramic driving plate, the middle part of the cross-shaped hole, the third ceramic driving plate, the lower part of the cross-shaped hole, one short axis of the frame sequentially passes through the rear part of the cross-shaped hole, the second ceramic driving plate, one end of the middle part of the cross-shaped hole, and the other short axis of the frame sequentially passes through the front part of the cross-shaped hole, the fourth ceramic driving plate and the other end of the middle part of the cross-shaped hole, so that the ceramic driving plates are rotatably connected to the frame, and the four uniform ceramic driving plates are also arranged in a clockwise posture in the clockwise direction.

[0016] The present application has the following beneficial effects: The present application provides a simple and feasible rudder device structure scheme, which reasonably and efficiently uses the internal space of the bullet, so that the rudder device meets the needs of two-dimensional trajectory correction of the micro-guided bullet under the limitation of the extremely small space in the bullet. The present application adopts the stacked ceramic sheet power extension as a power source, can be applicable to a lower 60V working voltage, the maximum output is 378N, and the maximum working displacement is 0.2mm in cooperation with a displacement amplification mechanism, which effectively improves the driving performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an internal structure schematic diagram of a piezoelectric rudder device for a micro-guided bullet.

[0018] Figure 2 It is a schematic diagram of the overall structure of a micro-guided bullet.

[0019] Figure 3 It is an internal structure explosion schematic diagram of a piezoelectric ceramic group.

[0020] Figure 4 It is an internal structure explosion schematic diagram of a rudder transmission group.

[0021] Figure 5 It is a principle diagram of a piezoelectric rudder device for a micro-guided bullet. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described below in detail through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0023] Specific implementation one: combination Figures 1-5 In this embodiment, a piezoelectric rudder device for a micro-guided bullet includes: The piezoelectric ceramic group 3 and the rudder transmission group 4 are arranged in the shell; The piezoelectric ceramic group 3 includes a piezoelectric ceramic shell 32, piezoelectric ceramics 33 and piezoelectric ceramic caps 34. One end of each of the four piezoelectric ceramics 33 of the piezoelectric ceramic group 3 is connected to the piezoelectric ceramic shell 32, and the other end of each piezoelectric ceramic 33 is connected to a corresponding piezoelectric ceramic cap 34; The rudder transmission group 4 includes a board frame 41, a board frame long shaft 42, a ceramic drive plate 43, a swing stop plate 44, a tail rudder 45, a spring seat 46, a spring 48, a swing crank 49, a swing shaft 410 and a board frame short shaft 411. The board frame 41 has a cross-shaped hole arranged in a cross shape. The cross-shaped through hole passes through the center of the board frame 41. Four circumferentially arranged mounting grooves are machined on the board frame 41. The board frame 41 is machined with a relief hole at a position corresponding to the mounting groove. The adjacent mounting grooves are connected. The position where the mounting grooves are connected cuts off the cross-shaped hole, so that the board frame long shaft 42 and the board frame short shaft 411 mounted at this position are exposed outside the cross-shaped hole. Four circumferentially arranged ceramic drive plates 43 are arranged in the mounting grooves correspondingly. Each exposed board frame long shaft 42 and board frame short shaft 411 is rotationally connected to the corresponding ceramic drive plate 43; The left side of the ceramic drive plate 43 cooperates with the corresponding piezoelectric ceramic cap 34 passing through the relief hole. The right side of the ceramic drive plate 43 cooperates with the left side of the corresponding swing stop plate 44; The swing crank 49 and the swing shaft 410 are rotationally connected to the shell. The swing crank 49 is parallel to the board frame long shaft 42, and the swing shaft 410 is parallel to the board frame short shaft 411. The swing crank 49 and the swing shaft 410 are respectively connected to the swing stop plate 44 on both sides, so that the four uniform swing stop plates 44 are also arranged in a clockwise attitude in the clockwise direction. Each swing stop plate 44 is connected to a ceramic drive plate 43 correspondingly. The swing crank 49 and the swing shaft 410 are exposed outside the shell. The exposed end of the swing crank 49 and the exposed end of the swing shaft 410 are connected to the tail rudder 45; One end of each of the four springs 48 is fixedly connected to the corresponding swing stop plate 44. The other end of the spring 48 is fixedly connected to the spring seat 46. The spring 48 is used for resetting; The application provides a simple and feasible rudder device structure scheme, which makes the rudder device meet the needs of two-dimensional trajectory correction of a micro-guided bullet by reasonably and efficiently using the space in the bullet.

[0024] Specific embodiment two: combination Figures 1-5 In this embodiment, the piezoelectric rudder device for the micro-guided bullet includes a mounting plate and four clamps, each of which is a cuboid cylinder structure, the four walls of the cuboid cylinder structure are separated from each other, the cuboid cylinder structure is elastic, the four clamps are uniformly arranged, one end of the clamp is fixedly connected with the mounting plate, one end of the piezoelectric ceramic 33 is inserted into the clamp and clamped by the four walls of the cuboid cylinder structure to realize interference fit between the clamp and the piezoelectric ceramic 33, and the piezoelectric ceramic group 3 is made of insulating material.

[0025] Specific embodiment three: combination Figures 1-5 In this embodiment, the piezoelectric rudder device for the micro-guided bullet further includes ceramic adjusting bolts 31, threaded through holes are processed on the mounting plate of the piezoelectric ceramic shell 32 at positions corresponding to the clamps, the ceramic adjusting bolts 31 are inserted into the threaded through holes to tightly press the end of the piezoelectric ceramic 33, and the length of the piezoelectric ceramic 33 extending out of the clamp can be adjusted by rotating the ceramic adjusting bolts 31.

[0026] Specific embodiment four: combination Figures 1-5 In this embodiment, the piezoelectric rudder device for the micro-guided bullet includes a mounting plate and four clamps, each of which is a cuboid cylinder structure, the four walls of the cuboid cylinder structure are separated from each other, the cuboid cylinder structure is elastic, the four clamps are uniformly arranged, one end of the clamp is fixedly connected with the mounting plate, one end of the piezoelectric ceramic 33 is inserted into the clamp and clamped by the four walls of the cuboid cylinder structure to realize interference fit between the clamp and the piezoelectric ceramic 33, and the piezoelectric ceramic group 3 is made of insulating material.

[0027] Specific embodiment five: combination Figures 1-5 In this embodiment, the piezoelectric rudder device for the micro-guided bullet includes a mounting plate and four clamps, each of which is a cuboid cylinder structure, the four walls of the cuboid cylinder structure are separated from each other, the cuboid cylinder structure is elastic, the four clamps are uniformly arranged, one end of the clamp is fixedly connected with the mounting plate, one end of the piezoelectric ceramic 33 is inserted into the clamp and clamped by the four walls of the cuboid cylinder structure to realize interference fit between the clamp and the piezoelectric ceramic 33, and the piezoelectric ceramic group 3 is made of insulating material.

[0028] Specific embodiment six: combination Figures 1-5The embodiment is explained as follows. The piezoelectric rudder device for the micro-guided bullet of the embodiment has the right protrusion on the end of the ceramic driving plate 43, and the right protrusion of the ceramic driving plate 43 cooperates with the swing baffle 44. In the original position, the piezoelectric ceramic cap 34 is not electrified, the other end of the piezoelectric ceramic cap 34 contacts the left side of the ceramic driving plate 43, the spring 48 is not forced in the axial direction, and the distance between the right protrusion of the ceramic driving plate 43 and the swing baffle 44 is S=0.1 mm. The piezoelectric ceramic 33 is connected with the power supply through the wire, adopts the stacked ceramic sheet to be electrified and elongated as the power source, adopts the lower 60V working voltage, the maximum output is 378N, cooperates with the displacement amplification mechanism, the maximum working displacement is 0.2 mm, which effectively improves the driving performance of the rudder device.

[0029] Specific implementation method seven: in combination Figures 1-5 The embodiment is explained as follows. The piezoelectric rudder device for the micro-guided bullet of the embodiment has the right protrusion on the end of the ceramic driving plate 43, and the right protrusion of the ceramic driving plate 43 cooperates with the swing baffle 44. In the original position, the piezoelectric ceramic cap 34 is not electrified, the other end of the piezoelectric ceramic cap 34 contacts the left side of the ceramic driving plate 43, the spring 48 is not forced in the axial direction, and the distance between the right protrusion of the ceramic driving plate 43 and the swing baffle 44 is S=0.1 mm. The piezoelectric ceramic 33 is connected with the power supply through the wire, adopts the stacked ceramic sheet to be electrified and elongated as the power source, adopts the lower 60V working voltage, the maximum output is 378N, cooperates with the displacement amplification mechanism, the maximum working displacement is 0.2 mm, which effectively improves the driving performance of the rudder device.

[0030] Specific implementation method seven: in combination Figures 1-5This embodiment describes a piezoelectric servo device for a miniature guided bullet. The outer casing includes a tail shell 1 and a tail seal 2. Four circumferentially evenly arranged elastic hooks are provided on the inner side of the end of the tail shell 1. A protrusion is provided on the inner side of the end of the tail seal 2 corresponding to the hooks. During insertion of the hooks into the tail seal 2, the tail shell 1 is subjected to radial pressure from the protrusions. When the end of the hook passes through the protrusion, it springs back outward, hooking the end onto the protrusion, thus connecting the tail shell 1 and the tail seal 2. Each set of hooks includes two independent spring pieces. A first arc groove is provided between the two spring pieces of the tail shell 1. A second arc groove is provided at the end of the seal 2 corresponding to the first arc groove of the tail shell 1. The first arc groove and the second arc groove form mounting holes. The swing crankshaft 49 is rotatably connected to the shell through the upper and lower mounting holes. The swing shaft 410 is rotatably connected to the shell through the front and rear mounting holes. The mounting holes are located between the swing baffle 44 and the tail rudder 45 on the same side to control the radial displacement of the swing crankshaft 49 and the swing shaft 410. The mounting plate and plate frame 41 of the piezoelectric ceramic shell 32 are fixedly connected to the tail shell 1. The spring seat 46 is fixedly connected to the tail seal 2. The swing end of the tail rudder 45 is located on the outer side corresponding to the tail seal 2.

[0031] Specific Implementation Method Nine: Combining Figures 1-5 This embodiment describes a piezoelectric servo device for a miniature guided bullet. The long shaft 42 of the plate frame sequentially passes through the upper side of the cross-shaped hole, the first ceramic drive plate 43, the middle of the cross-shaped hole, the third ceramic drive plate 43, and the lower part of the cross-shaped hole. A short shaft 411 of the plate frame sequentially passes through the rear part of the cross-shaped hole, the second ceramic drive plate 43, and one end of the middle part of the cross-shaped hole. Another short shaft 411 of the plate frame sequentially passes through the front part of the cross-shaped hole, the fourth ceramic drive plate 43, and the other end of the middle part of the cross-shaped hole, so that the ceramic drive plates 43 are rotatably connected to the plate frame 41. The four uniform ceramic drive plates 43 are also arranged in a clockwise direction.

[0032] Example 1: Combination Figures 1-5 The piezoelectric servo mechanism for a miniature guided bullet shown includes: a tail shell 1, a tail seal 2, a piezoelectric ceramic shell 32, four piezoelectric ceramics 33, four ceramic adjusting bolts 31, a plate frame 41, a long shaft of the plate frame 42, two short shafts of the plate frame 411, four ceramic drive plates 43, four piezoelectric ceramic caps 34, a swing shaft 410, a swing crankshaft 49, four tail rudders 45, four swing baffles 44, a spring seat 46, four miniature springs 48, and four spring top plates 47. The tail shell 1 is a shell that is open at both the top and bottom. The rear end of the tail shell 1 is provided with four semi-circular shaft grooves evenly distributed along the circumference. The tail seal 2 is installed at the rear end of the tail shell 1. The tail seal 2 is also provided with four semi-circular shaft grooves, and the shaft grooves of the tail seal 2 are correspondingly set with the shaft grooves of the tail shell 1. The piezoelectric ceramic shell 32 is composed of a circular base and four cuboid cylinder seats, and the circular base is provided with four threaded through holes; The four piezoelectric ceramics 33 are installed in the cuboid cylinder seats of the piezoelectric ceramic shell 32; The four ceramic adjusting bolts 31 are installed in the threaded through holes of the circular base of the piezoelectric ceramic shell 32; The plate frame 41 is installed at the rear end of the tail shell 1, and the plate frame 41 is provided with an axle hole, a ceramic drive plate installation slot and a piezoelectric ceramic cap hole at corresponding positions; The plate frame long axle 42 is installed in the axle hole of the plate frame 41; The two plate frame short axles 411 are installed in the axle hole of the plate frame 41 and are cross arranged with the plate frame long axle 42; The four ceramic drive plates 43 are installed on the plate frame long axle 42 and the plate frame short axle 411 and are arranged in the installation slot of the plate frame 41, and the ceramic drive plates 43 correspond to the positions of the piezoelectric ceramics 33; The four piezoelectric ceramic caps 34 are installed on the four piezoelectric ceramics 33, and the piezoelectric ceramic caps 34 are pressed on the back of the ceramic drive plates 43 through the piezoelectric ceramic cap holes of the plate frame 41; The swing axle 410 is installed in the axle hole formed by the cooperation of the axle slot of the tail shell 1 and the axle slot of the tail seal 2; The swing crank 49 is installed in the other side axle hole formed by the cooperation of the axle slot of the tail shell 1 and the axle slot of the tail seal 2, and the swing crank 49 is cross arranged with the swing axle 410; The four tail rudders 45 are installed at the two ends of the swing axle 410 and the swing crank 49; The four swing baffles 44 are installed on the swing axle 410 and the swing crank 49, and the swing baffles 44 correspond to the positions of the ceramic drive plates 43; The spring seat 46 is installed in the tail seal 2, and the spring seat 46 is provided with four spring installation holes, and the spring installation holes correspond to the positions of the swing baffles 44; The four spring top pieces 47 are installed in the installation holes of the spring seat 46; The four micro springs 48 are installed in the installation holes of the spring seat 46, and the front ends of the micro springs 48 are pressed on the swing baffles 44, and the rear ends of the micro springs 48 are pressed on the spring top pieces 47.

[0033] The piezoelectric ceramic 33 is used as a power source of the rudder mechanism by being electrified and elongated, and the tail rudder 45 is driven to positively and negatively deflect, so that the two-dimensional trajectory correction function of the micro guided bullet is realized; Referring to Figure 1 — Figure 2 As shown, the main components of the rudder mechanism device: the piezoelectric ceramic group 3 and the rudder mechanism transmission group 4 are installed in the interior of the tail shell 1 and the tail seal 2, and the fixed wings on the tail shell 1 and the tail rudders 45 on the tail seal 2 ensure the flight stability and the trajectory correction ability of the bullet; Referring to Figure 3 — Figure 5 As shown in the figure, the piezoelectric ceramic group 3 has four piezoelectric ceramics 33, wherein every two piezoelectric ceramics 33 on the diagonal side is a group respectively driving the positive and negative deflection of the tail rudder 45, and the two groups of piezoelectric ceramics 33 control the trajectory correction of the bullet in the pitch channel and the yaw channel respectively by driving the corresponding tail rudder 45 to deflect; Referring to Figure 5 As shown in the figure, taking the yaw channel as an example, v is the direction of flight speed, and only the left piezoelectric ceramic 33 is electrified when the rudder device is working, the piezoelectric ceramic 33 is elongated backward, the piezoelectric ceramic cap 34 is pushed to rotate the ceramic driving plate 43, and then the swing baffle 44 is pushed to rotate the swing crankshaft 49, so that a pair of tail rudders 45 installed on the deflection crankshaft 49 deflects to the right, and the bullet deflects to the right; Similarly, only the right piezoelectric ceramic 33 is electrified and elongated, and the movement is transmitted to the tail rudder 45 through the piezoelectric ceramic cap 34, the ceramic driving plate 43, the swing baffle 44 and the swing crankshaft 49, so that the tail rudder 45 deflects to the left, and the bullet deflects to the left; In this way, the positive and negative corrections of the bullet in the yaw channel are realized by controlling a pair of piezoelectric ceramics 33 on the diagonal side; Similarly, the positive and negative corrections of the bullet in the pitch channel can be realized by controlling another pair of piezoelectric ceramics 33; In summary, the piezoelectric rudder device of the application meets the needs of two-dimensional trajectory correction of the micro-guided bullet; Referring to Figure 2 As shown in the figure, in this embodiment, four fixed wings are arranged outside the bullet tail shell 1, four buckles are arranged at the rear end of the bullet tail shell 1, and the fixed wings and the buckles are arranged corresponding to the positions of the shaft grooves of the bullet tail shell 1; The tail seal 2 is connected with the bullet tail shell 1 through the four buckles of the bullet tail shell 1; Four fixed wings are evenly distributed on the circumference of the outside of the bullet tail shell 1, which mainly functions to ensure the flight stability of the bullet, and four buckles (hooks) are designed at the ends of the fixed wings, which are used for connecting the tail seal 2 and the bullet tail shell 1; When connected, the tail seal 2 is pushed into the rear of the bullet tail shell 1, and the buckles are clamped on the bosses at the corresponding positions of the tail seal 2; This buckle type connection is conducive to the rapid installation of bullet components; Referring to Figure 1 and Figure 3 As shown in the figure, in this embodiment, the four walls of the piezoelectric ceramic shell 32 are separated from each other, and the piezoelectric ceramic 33 is clamped in the piezoelectric ceramic shell 32; The four walls of the piezoelectric ceramic shell 32 are initially slightly inwardly gathered, and the piezoelectric ceramic 33 is pressed into the piezoelectric ceramic shell 32 from the opening side of the piezoelectric ceramic shell 32, which will slightly expand the four walls of the piezoelectric ceramic shell 32, and the piezoelectric ceramic 33 is clamped in the piezoelectric ceramic shell 32 under the elastic force; Referring to Figure 1 and Figure 4As shown, in the embodiment, the piezoelectric ceramic cap 34 is pressed on the back of the ceramic driving plate 43 near the rotating shaft side; the ceramic driving plate 43 has a protrusion away from the rotating shaft side and has a working space with the swing stop plate 44; the maximum displacement of the piezoelectric ceramic is 40μm, and an amplification mechanism is used in the application to amplify the displacement to 0.2mm to meet the working needs of the steering engine. The mechanism is composed of the piezoelectric ceramic cap 34, the frame 41, the long shaft 42 of the frame, the short shaft 411 of the frame, the ceramic driving plate 43 and the swing stop plate 44, and mainly amplifies the displacement through the lever principle, wherein the ceramic driving plate 43 is a lever, the piezoelectric ceramic cap 34 is pressed on the ceramic driving plate 43 as a force input end, and the protrusion of the ceramic driving plate 43 is pressed on the swing stop plate 44 as a force output end. Because the piezoelectric ceramic cap 34 is pressed on the ceramic driving plate 43 near the rotating shaft side, the protrusion of the ceramic driving plate 43 is located away from the rotating shaft side, so the force arm of the force input end is smaller than that of the force output end, and the force arm ratio is 1:5, and the displacement of the piezoelectric ceramic is amplified from 40μm to 0.2mm. In addition, the steering engine is a positive and negative bidirectional movement, the single working displacement is 0.1mm, has a 0.1mm return difference, the protrusion of the ceramic driving plate 43 has a 0.1mm working space with the swing stop plate 44, and prevents the swing stop plate on the non-working side from moving interference; Referring to Figure 4 As shown, in the embodiment, the swing shaft 410 and the swing crankshaft 19 at both ends, and the part of the shaft body of the swing shaft 410 and the swing crankshaft 19 at both ends are designed as D-shaped shaft anti-rotation structures, which connect the swing stop plate 44 and the tail rudder 45 installed thereon and the rotating shaft together to rotate together.

[0034] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities according to the mathematical knowledge of arrangement and combination, so the application does not need to explain the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the application.

[0035] The above only describes the preferred embodiments of the application and is not used to limit the application. Those skilled in the art can make various changes and changes to the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. A piezoelectric actuator device for a micro-guided bullet, characterized by: The application relates to a rudder control device. The four piezoelectric ceramics (33) of the piezoelectric ceramic group (3) are connected with a piezoelectric ceramic shell (32) at one end, and connected with a piezoelectric ceramic cap (34) at the other end. The plate frame (41) has a cross-shaped hole, four installation grooves are formed on the plate frame (41), and an avoiding hole is formed on the plate frame (41) at a position corresponding to the installation grooves; the avoiding hole is communicated between adjacent installation grooves, the cross-shaped hole is cut off at the position communicated between the installation grooves, the plate frame long shaft (42) and the plate frame short shaft (411) exposed at the position are installed, and four circumferential array ceramic drive plates (43) are correspondingly arranged in the installation grooves; the plate frame long shaft (42) and the plate frame short shaft (411) exposed at each section are connected with the corresponding ceramic drive plate (43). The ceramic drive plate (43) is matched with the piezoelectric ceramic cap (34) penetrating through the avoiding hole at the left side, and matched with the swing baffle (44) at the right side. The swing crankshaft (49) and the swing shaft (410) are arranged in a cross shape and connected with the shell; the swing baffle (44) is arranged on the two sides of the swing crankshaft (49) and the swing shaft (410) respectively; the swing crankshaft (49) and the swing shaft (410) are arranged outside the shell at the two ends; and the tail rudder (45) is arranged on the extending end of the swing crankshaft (49) and the swing shaft (410). One end of the four springs (48) is connected with the corresponding swing baffle (44), and the other end of the spring (48) is connected with the spring seat (46). The piezoelectric ceramic shell (32) comprises a mounting plate and four clamps; the clamp is a cuboid cylinder structure; the four walls of the cuboid cylinder structure are separated from each other; the cuboid cylinder structure has elasticity; the four clamps are uniformly arranged; one end of the clamp is fixedly connected with the mounting plate; and one end of the piezoelectric ceramic (33) is inserted into the clamp and clamped and mounted by the four walls of the cuboid cylinder structure.

2. The piezoelectric actuator device for micro guided bullet according to claim 1, wherein: The mounting plate of the piezoelectric ceramic shell (32) is provided with a threaded through hole at a position corresponding to the clamp; and the ceramic adjusting bolt (31) penetrates through the threaded through hole and tightly presses the end of the piezoelectric ceramic (33).

3. The piezoelectric servo device for micro guided bullets according to claim 1 or 2, characterized in that: The piezoelectric ceramic cap (34) is h-shaped; and the other end of the piezoelectric ceramic (33) is inserted into a groove at one end of the piezoelectric ceramic cap (34).

4. The piezoelectric actuator device for micro guided bullet according to claim 1, wherein: The other end of the four springs (48) is uniformly connected with the spring seat (46) through the spring top sheet (47); and the spring (48) is a micro spring.

5. The piezoelectric actuator device for micro guided bullet according to claim 1, wherein: The end of the ceramic drive plate (43) has a right side protrusion; and a working return distance is left between the right side protrusion of the ceramic drive plate (43) and the swing baffle (44).

6. The piezoelectric actuator device for micro guided bullets according to claim 1 or 4, characterized in that: ​ 7. The piezoelectric actuator device for micro guided bullet according to claim 1, wherein: The swing crankshaft (49) is a concave shaft, the swing shaft (410) passes through the concave section of the swing crankshaft (49), and the four tail rudders (45) are arranged in a circumferential array; the connecting section of the swing crankshaft (49) and the swing baffle (44) and the tail rudder (45) is processed with a first cutting surface, so that the cross section of the first connecting section is D-shaped, and the connecting hole of the swing baffle (44) and the tail rudder (45) and the swing crankshaft (49) is a D-shaped hole matched with the connecting section; the connecting section of the swing shaft (410) and the swing baffle (44) and the tail rudder (45) is processed with a second cutting surface, so that the cross section of the second connecting section is D-shaped, and the connecting hole of the swing baffle (44) and the tail rudder (45) and the swing shaft (410) is a D-shaped hole matched with the connecting section.

8. The piezoelectric actuator device for micro guided bullets according to claim 1 or 7, characterized in that: The shell comprises a tail shell (1) and a tail seal (2), the tail shell (1) is provided with four clamping hooks arranged uniformly in the circumferential direction at the inner side of the end portion, the tail seal (2) is provided with a boss at the inner side of the end portion corresponding to the clamping hooks, and the tail shell (1) and the tail seal (2) are connected; each group of clamping hooks comprises two independent elastic pieces, the first arc groove is arranged between the two elastic pieces of the tail shell (1), the second arc groove is arranged at the end portion of the tail seal (2) corresponding to the first arc groove of the tail shell (1), the first arc groove and the second arc groove correspond to form a mounting hole, the swing crankshaft (49) is rotatably connected with the shell through the upper and lower mounting holes, the swing shaft (410) is rotatably connected with the shell through the front and rear mounting holes, the mounting plate and the frame (41) of the piezoelectric ceramic shell (32) are connected with the tail shell (1), the spring seat (46) is connected with the tail seal (2), and the swing end of the tail rudder (45) is arranged at the corresponding outer side of the tail seal (2).

9. The piezoelectric actuator device for micro guided bullet according to claim 1, wherein: The long shaft (42) of the frame sequentially passes through the upper side of the cross-shaped hole, the first ceramic driving plate (43), the middle part of the cross-shaped hole, the third ceramic driving plate (43) and the lower part of the cross-shaped hole, one short shaft (411) of the frame sequentially passes through the rear part of the cross-shaped hole, the second ceramic driving plate (43) and one end of the middle part of the cross-shaped hole, and the other short shaft (411) of the frame sequentially passes through the front part of the cross-shaped hole, the fourth ceramic driving plate (43) and the other end of the middle part of the cross-shaped hole, so that the ceramic driving plate (43) is rotatably connected to the frame (41), and the four uniform ceramic driving plates (43) are also arranged in a clockwise posture in the clockwise direction.

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