Portable dismounting and mounting device for bullet feeding cam mechanism

Abstract

The utility model provides a portable disassembly and assembly device for a bullet feeding cam mechanism. The portable disassembly and assembly device comprises a support body, a set screw, an adjusting screw, an adjusting pin, a support body, a clamping shoot block and a small wrench, a through hole is formed in the middle of the supporting body, a front clamping shoot or a rear clamping shoot of the bullet feeding cam mechanism can be clamped into the through hole, rectangular holes are formed in the two ends of the through hole, a clamping shoot block is located in the rectangular holes, and the columnar end of the clamping shoot block is matched with the end of the front clamping shoot or the end of the rear clamping shoot. Set screws are arranged at the two ends of the supporting body, penetrate through a U-shaped notch in the bottom of the clamping shoot block and radially press the front clamping shoot or the rear clamping shoot through a columnar end; the side wall of the supporting body is provided with an adjusting screw and an adjusting pin, the adjusting screw is connected in a mounting hole in the side wall of the clamping shoot block, the inclined surface of the end part of the adjusting pin is in contact with the side wall of the columnar end of the clamping shoot block, and the adjusting pin can move under the driving of the adjusting screw so as to finely adjust the radial posture of the clamping shoot block. The clamping shoot is sleeved in the through hole of the support body, the posture of the clamping shoot block is adjusted through a small wrench, and the fastening screw is rotated to realize rapid disassembly and assembly of the clamping shoot.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling, and in particular relates to a portable disassembly and assembly device for a bullet-feeding cam mechanism. Background Art

[0002] Reference Figures 24-27 The feed cam assembly of a certain type of aircraft gun is a key component for ensuring accurate ammunition feeding. The feed cam assembly includes a cam 8, a retaining spring 9, a front retaining shoot 10, a rear retaining shoot 11, and a retaining pin 12. The retaining pin 12 is located in the axial center pin hole of cam 8. Retaining springs 9 are installed in the center holes of both the front retaining shoot 10 and the rear retaining shoot 11. The two front retaining shoots 10 and the two rear retaining shoots 11 are radially mounted on the side walls of the cam, with the arc-shaped notches on the side walls of the front retaining shoots 10 and rear retaining shoots 11 respectively aligning with the side walls of the retaining pin 12. During assembly, the front retaining shoot 10 and the rear retaining shoot 11 are compressed by approximately 6 mm, and then the retaining pin 12 is installed into the corresponding mounting hole in the cam.

[0003] After each firing, the feed cam components must be disassembled and cleaned of grease according to regulations. However, due to the high force of the retaining spring 9, manual compression of the retaining spring 9 by 6mm is impossible, and the retaining pin 12 cannot be removed. Therefore, operators typically resort to cleaning the entire feed cam assembly. This method easily removes the pre-applied grease from the retaining spring 9, front retaining shoot 10, rear retaining shoot 11, and retaining pin 12. This lacks sufficient lubrication between the cleaned components. During the high-frequency movement of the gun, the front retaining shoot 10 and rear retaining shoot 11 periodically compress and recover, causing friction with the retaining pin 12. In severe cases, this can cause the retaining pin 12 to break, causing the gun to stop firing. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that the shoot pin in the aircraft gun feed cam is difficult to disassemble, and the use of a whole-machine cleaning method easily makes it easy to clean the pre-grease applied on the shoot spring, shoot and shoot pin surfaces, which leads to the shoot pin breaking due to frequent use and even the aircraft gun stopping firing. A portable disassembly and assembly device for the feed cam mechanism is provided, which includes a front shoot installer, a rear shoot installer and a small wrench, and can accurately and quickly disassemble or assemble the feed cam components, thereby realizing the disassembly and maintenance of each component in the feed cam.

[0005] To achieve the above objectives, the technical solutions provided by this utility model are:

[0006] A portable disassembly and assembly device for a feed cam mechanism, comprising a cam 8, a bamboo shoot spring 9, a front bamboo shoot 10, a rear bamboo shoot 11, and a bamboo shoot pin 12. The bamboo shoot spring 9 is installed in the center holes of the front bamboo shoot 10 and the rear bamboo shoot 11. The bamboo shoot pin 12 is installed in the axial center pin hole of the cam 8. The front bamboo shoot and the rear bamboo shoot are radially mounted on the cam, with notches on their side walls matching the side walls of the bamboo shoot pin. The ends of the front bamboo shoot and the rear bamboo shoot are provided with inclined surfaces. The disassembly and assembly device comprises a front bamboo shoot disassembler, a rear bamboo shoot disassembler, and a small wrench.

[0007] The front bamboo shoot disassembler includes a first support body, a first set screw, a first adjustment screw, a first adjustment pin and a front bamboo shoot pressure block 5; the first support body is in the shape of a rectangular plate, a circular through hole is provided in the middle of the first support body, the inner diameter of which is equal to the outer diameter of the cam 8, and rectangular holes are provided at both ends of the circular through hole, which are connected to the circular through hole and are arranged in an anti-symmetrical manner. A protrusion is provided along the radial direction of the circular hole at the connection between the rectangular hole and the circular through hole, which can be stuck in the annular groove on the side wall of the cam 8;

[0008] The two first set screws are respectively installed at both ends of the first support body and extend into the rectangular hole, and an annular groove is provided on the side wall of the first set screw near the end;

[0009] The front bamboo shoot clamping block 5 is provided with a cylindrical protrusion at one end, and a notch is provided at the end of the cylindrical protrusion, which can cooperate with the notch at the end of the front bamboo shoot clamping block 10; a notch is provided on one side of the other end of the front bamboo shoot clamping block 5, and a U-shaped hole is provided on the notch, and the U-shaped hole can be clamped in the annular groove of the first fastening screw, and the opening direction of the notch and the U-shaped hole is perpendicular to the axis of the cylindrical protrusion; a rectangular groove is provided on the other side of the other end of the front bamboo shoot clamping block 5, and the rectangular groove is opposite to the opening direction of the U-shaped hole;

[0010] A first adjusting screw and a first adjusting pin are mounted on opposite side walls of the two rectangular holes on the support body 4. The axes of the first adjusting screw and the first adjusting pin are perpendicular to the axis of the first set screw. The threaded end of the first adjusting screw can be located in the rectangular groove on the side wall of the front bamboo shoot clamping block without contacting the bottom of the groove. The first adjusting pin can move along the axis driven by the first adjusting screw and can push the front bamboo shoot clamping block 5 to adjust the radial position of the front bamboo shoot clamping block when the end face of the first adjusting pin contacts the bottom face of the rectangular groove on the front bamboo shoot clamping block 5.

[0011] The rear bamboo shoot disassembler includes a second support body, a second set screw, a second adjustment screw, a second adjustment pin and a rear bamboo shoot pressing block 6; the installation positions of the second set screw, the second adjustment screw and the second adjustment pin on the second support body are the same as the installation positions of the first set screw, the first adjustment screw and the first adjustment pin in the front bamboo shoot disassembler;

[0012] The rear bamboo shoot clamping block 6 has a cylindrical protrusion at one end, and a notch at the end of the cylindrical protrusion, which can cooperate with the notch at the end of the rear bamboo shoot clamping block 11, and the direction of the notch on the rear bamboo shoot clamping block is centrally symmetrical with the direction of the notch on the front bamboo shoot clamping block 5; the shape and structure of the other end of the rear bamboo shoot clamping block 6 is the same as that of the front bamboo shoot clamping block 5;

[0013] The small wrench is used to adjust the postures of the front and rear shoots 5 and 6 when assembling the feed cam mechanism.

[0014] Furthermore, the front clamping block 5 includes a cylindrical protrusion and a rectangular parallelepiped structure, and the cylindrical protrusion is vertically arranged on the rectangular parallelepiped structure;

[0015] The end of the cylindrical protrusion is provided with an L-shaped notch;

[0016] A rectangular groove is formed on one side of the rectangular parallelepiped structure, the groove direction is parallel to the axis of the cylindrical protrusion, and an inner side wall of the rectangular groove is an inclined surface, which can cooperate with the inclined surface of the end of the first adjustment pin;

[0017] A U-shaped notch is provided on the other side of the rectangular parallelepiped structure, and the opening direction of the U-shaped notch is perpendicular to the opening direction of the rectangular groove, and the opening direction is opposite;

[0018] A U-shaped hole is provided on the U-shaped notch and on the side wall away from the cylindrical protrusion, and the opening direction is opposite to the opening direction of the rectangular groove.

[0019] Furthermore, the first adjusting screw and the second adjusting screw are both in the shape of a second-order rotational body, with knurling on the side wall of the large end serving as a handle and a stud on the small end.

[0020] Furthermore, the first adjustment pin and the second adjustment pin have the same shape and size; one end is a rectangular parallelepiped structure, and the other end is a columnar structure; a rectangular slot is provided on the side wall of the rectangular parallelepiped structure, and the rectangular slot can be clamped on the large end of the first adjustment screw or the second adjustment screw;

[0021] An inclined surface is provided on the side wall of the columnar structure near the end.

[0022] Furthermore, the first set screw and the second set screw have the same structural shape; the first set screw and the second set screw are in the shape of a second-order rotational body, and knurling is provided on the outer wall of the large end; the small end is a screw, and an annular groove is provided on the side wall of the small end and near the end of the small end.

[0023] Furthermore, the small wrench is a rectangular plate with notches at both ends, which can be clamped on the inclined surface of the end of the front or rear bamboo shoot and the notch located on the back of the inclined surface.

[0024] Furthermore, the disassembly and assembly device is made of alloy steel material, which is subjected to tempering treatment after processing and the surface is sandblasted and phosphated for corrosion protection.

[0025] The advantages of the utility model are:

[0026] 1. When using the utility model to disassemble the feed cam component, the front bamboo shoot mounter and the rear bamboo shoot mounter are installed on the front bamboo shoot and rear bamboo shoot parts of the feed cam component in sequence. If necessary, the adjusting screw is rotated to drive the adjusting pin to move so that the front bamboo shoot pressure block and the rear bamboo shoot pressure block are aligned with the front bamboo shoot and rear bamboo shoot of the feed cam component. The tightening screw is rotated to compress the front bamboo shoot and the rear bamboo shoot to achieve rapid decomposition of the feed cam component. The entire decomposition process takes only 1 minute, greatly improving the disassembly efficiency.

[0027] During assembly, install the various components of the feed cam into the corresponding mounting holes according to the assembly relationship, install the front bamboo shoot clamping installer and the rear bamboo shoot clamping installer on the front bamboo shoot clamping and rear bamboo shoot clamping parts of the feed cam component in turn, use a small wrench to adjust the posture of the front bamboo shoot clamping and rear bamboo shoot clamping blocks so that they are aligned with the front bamboo shoot clamping block and the rear bamboo shoot clamping block, rotate the tightening screw to compress the front bamboo shoot clamping and the rear bamboo shoot clamping, so as to realize the fast and accurate assembly of the feed cam component. The entire assembly process only takes 1 minute, which greatly improves the assembly efficiency.

[0028] 2. The portable feed cam disassembly and assembly device of the utility model has good universality and interchangeability, and can realize the rapid and accurate disassembly and assembly of all the feed cam components of this type of aircraft gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 : The front view of the utility model front card bamboo shoot installer;

[0030] Figure 2 : The front view of the rear bamboo shoot installer of the utility model;

[0031] Figure 3 : Three-dimensional diagram of the small wrench structure;

[0032] Figure 4 : Stereoscopic diagram of set screw structure;

[0033] Figure 5 : Stereoscopic diagram of the adjusting screw structure;

[0034] Figure 6 : Stereoscopic diagram of adjusting pin structure;

[0035] Figure 7 : Main view of the supporting structure;

[0036] Figure 8 : A three-dimensional diagram of the support structure;

[0037] Figure 9 : Main view of the front bamboo shoot pressing block;

[0038] Figure 10 : Figure 9 Sectional view of the front-center bamboo shoot pressing block along the AA axis;

[0039] Figure 11 : Stereoscopic image of the front bamboo shoot pressing block;

[0040] Figure 12 : Main view of the rear bamboo shoot pressing block;

[0041] Figure 13 : Figure 12 AA section view;

[0042] Figure 14 : Stereoscopic image of the rear bamboo shoot pressing block;

[0043] Figure 15 : Front view of the feed cam components disassembled using a portable feed cam disassembler;

[0044] Figure 16 : A three-dimensional diagram of the feed cam components disassembled using a portable feed cam disassembler;

[0045] Figure 17 : A three-dimensional view of assembling the feed cam components using a portable feed cam disassembler;

[0046] Figure 18 : Front card main view;

[0047] Figure 19 : Stereoscopic image of the front card;

[0048] Figure 20 : rear card main view;

[0049] Figure 21 : Stereoscopic image of the rear camera;

[0050] Figure 22 : Stereoscopic image of the card pin;

[0051] Figure 23 : Stereoscopic diagram of bamboo shoot spring;

[0052] Figure 24 : Main view of the feed cam component;

[0053] Figure 25 : A three-dimensional diagram of the feed cam components;

[0054] Figure 26 : Figure 24 Cross-sectional view of the center feed cam component along the AA line;

[0055] Figure 27 : Figure 26 BB cross-sectional view.

[0056] In the figure: 1- fastening screw; 2- adjusting screw; 3- adjusting pin; 4- supporting body; 5- front bamboo shoot clamping block; 6- rear bamboo shoot clamping block; 7- small wrench; 8- cam, 9- bamboo shoot clamping spring, 10- front bamboo shoot clamping block, 11- rear bamboo shoot clamping block, 12- bamboo shoot clamping pin. DETAILED DESCRIPTION

[0057] The following is a further detailed description of the present invention with reference to the accompanying drawings and specific embodiments:

[0058] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying 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 referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] The feed cam mechanism includes a cam 8, a bamboo shoot spring 9, a front bamboo shoot 10, a rear bamboo shoot 11, and a bamboo shoot pin 12. The bamboo shoot spring 9 is installed in the center hole of the front bamboo shoot 10 and the rear bamboo shoot 11, and the bamboo shoot pin 12 is installed in the axial center pin hole of the cam 8. The front bamboo shoot 10 and the rear bamboo shoot 11 have the same overall structure, being cylindrical. A 6mm diameter and 14mm deep bamboo shoot spring 9 installation hole is provided along the axis in the middle of one end. A 0.6mm deep and 6mm long notch is provided on the side wall of the cylinder, 4.3mm from the end face. The notch 10 and the notch on the rear bamboo shoot 11 are symmetrical. After installation, the bamboo shoot pin 12 cooperates with the notch to lock the front and rear bamboo shoots, ensuring that the front and rear bamboo shoots do not collide or interfere with each other during the working stroke. The other ends of the front and rear bamboo shoots 10 and 11 are provided with inclined planes at 45 degrees to the axis, and notches are provided on the back of the inclined planes to ensure that there is no interference when the two parts cooperate with each other in movement.

[0060] The cam 8 is a cylindrical body with an arrow engraved on the cylindrical surface indicating the installation direction. It also has four annular grooves and 9mm diameter and 26mm deep mounting holes for the front and rear clamping shoots. During assembly, the rear clamping shoot 11 and the front clamping shoot 10, which are pre-installed with the clamping shoot spring 9, are installed in sequence along the direction of the arrows. The ends of the rear and front clamping shoots are inclined inward, and the notches on the cylindrical surface are parallel to the axis of the cam 8. Spline shaft matching grooves are provided on both end surfaces of the cam 8, and mounting holes for the clamping shoot pin 12 are provided along the axis. The clamping shoot pin 12 is a two-step cylindrical structure with a smaller diameter cylindrical end having a conical head. During installation, it is inserted into the central mounting hole of the cam 8. When it reaches the front and rear clamping shoot installation positions, the clamping shoot pin can radially compress the front and rear clamping shoots, ensuring that the clamping shoot pin 12 falls into the notches on the cylindrical surfaces of the front and rear clamping shoots.

[0061] See also Figures 1 to 23A portable disassembly and assembly device for a feed cam mechanism, comprising a front shoot disassembly and assembly device, a rear shoot disassembly and assembly device, and a small wrench 7;

[0062] The front bamboo shoot disassembler includes a first support body, a first set screw, a first adjustment screw, a first adjustment pin and a front bamboo shoot pressure block 5; the first support body is in the shape of a rectangular plate, a circular through hole is provided in the middle of the first support body, the inner diameter of which is equal to the outer diameter of the cam 8, and rectangular holes are provided at both ends of the circular through hole, which are connected to the circular through hole and are arranged in an anti-symmetrical manner. A protrusion is provided along the radial direction of the circular hole at the connection between the rectangular hole and the circular through hole, which can be stuck in the annular groove on the side wall of the cam 8;

[0063] The two first set screws are respectively installed at both ends of the first support body and extend into the rectangular hole, and an annular groove is provided on the side wall of the first set screw near the end;

[0064] The front bamboo shoot clamping block 5 is provided with a cylindrical protrusion at one end, and a notch is provided at the end of the cylindrical protrusion, which can cooperate with the notch at the end of the front bamboo shoot clamping block 10; a notch is provided on one side of the other end of the front bamboo shoot clamping block 5, and a U-shaped hole is provided on the notch, and the U-shaped hole can be clamped in the annular groove of the first fastening screw, and the opening direction of the notch and the U-shaped hole is perpendicular to the axis of the cylindrical protrusion; a rectangular groove is provided on the other side of the other end of the front bamboo shoot clamping block 5, and the rectangular groove is opposite to the opening direction of the U-shaped hole;

[0065] A first adjusting screw and a first adjusting pin are mounted on opposite side walls of the two rectangular holes on the support body 4. The axes of the first adjusting screw and the first adjusting pin are perpendicular to the axis of the first set screw. The threaded end of the first adjusting screw can be located in the rectangular groove on the side wall of the front bamboo shoot clamping block without contacting the bottom of the groove. The first adjusting pin can move along the axis driven by the first adjusting screw. When the end face of the first adjusting pin contacts the bottom wall of the rectangular groove on the front bamboo shoot clamping block 5, the front bamboo shoot clamping block 5 is radially pushed to adjust the radial position of the front bamboo shoot clamping block.

[0066] The rear bamboo shoot disassembler includes a second support body, a second set screw, a second adjustment screw, a second adjustment pin and a rear bamboo shoot pressing block 6; the installation positions of the second set screw, the second adjustment screw and the second adjustment pin on the second support body are the same as the installation positions of the first set screw, the first adjustment screw and the first adjustment pin in the front bamboo shoot disassembler;

[0067] The rear bamboo shoot clamping block 6 has a cylindrical protrusion at one end, and a notch at the end of the cylindrical protrusion, which can cooperate with the notch at the end of the rear bamboo shoot clamping block 11, and the direction of the notch on the rear bamboo shoot clamping block is centrally symmetrical with the direction of the notch on the front bamboo shoot clamping block 5; the shape and structure of the other end of the rear bamboo shoot clamping block 6 is the same as that of the front bamboo shoot clamping block 5;

[0068] The small wrench is used to adjust the postures of the front and rear shoots 5 and 6 when assembling the feed cam mechanism.

[0069] Reference Figure 1 and Figure 2 The front bamboo shoot assembler includes a set screw 1, an adjustment screw 2, an adjustment pin 3, a support 4, and a front bamboo shoot pressing block 5; the rear bamboo shoot assembler includes a set screw 1, an adjustment screw 2, an adjustment pin 3, a support 4, and a rear bamboo shoot pressing block 6. Except for the cylindrical end notches of the front bamboo shoot pressing block being centrally symmetrical with the end notches of the rear bamboo shoot pressing block, the other components of the front and rear bamboo shoot assemblers share the same structural shape and mating relationship.

[0070] Reference Figure 3 The small wrench 7 is a long plate with notches at both ends. These notches fit over the inclined surface at the end of the front or rear bamboo shoot and the notch on the back of the inclined surface. This notch is used to adjust the position of the front or rear bamboo shoot during assembly of the feed cam mechanism, ensuring alignment with the notches in the front and rear bamboo shoot pressure blocks 5 and 6, thereby compressing the bamboo shoots. The small wrench is made of alloy steel, tempered after processing to achieve a certain hardness, and its surface is sandblasted and phosphated for corrosion protection.

[0071] Reference Figure 4 The set screw 1 is composed of two rotating bodies. One rotating body has a larger diameter and is a knurled cylindrical handle. The rotating handle can control the screwing in and out of the set screw 1; the other rotating body has a smaller diameter and an external thread on the surface, which is threadedly connected to the threaded holes at both ends of the support body 4 and extends into the rectangular hole of the support body 4 by about 8 mm.

[0072] An annular groove is provided on the side wall of set screw 2, near the small end of set screw 1. This groove fits within the U-shaped holes in the front and rear bamboo clamps 5 and 6. When set screw 1 is screwed in or out, it drives the front and rear bamboo clamps 5 and 6 along their axial direction. Set screw 1 is made of alloy steel and undergoes a tempering treatment after processing to achieve a certain hardness. The surface is sandblasted and phosphated for corrosion protection.

[0073] Reference Figure 5The adjustment screw 2 consists of two rotating sections. One section has a larger diameter and features a knurled cylindrical handle. The handle end fits into a rectangular slot on the adjustment pin 3. Rotating the handle drives the adjustment pin 3 axially, causing its end to rest against the bottom of the rectangular slot in the side wall of the front or rear bamboo clamping block 5 or 6. By pushing, the radial position of the front or rear bamboo clamping block 5 or 6 within the support body 4 is adjusted, aligning the inclined surface of the cylindrical boss on the front or rear bamboo clamping block 5 or 6 with the inclined surface of the front or rear bamboo clamping block 10 or 11. The other section of the adjustment screw 2 has a smaller diameter and features external threads that engage threaded holes in the side wall of the support body 4. The two adjustment screws 2 are mounted on the side walls of the support body 4, one at each end, in antisymmetrical positions. The axis of the adjustment screw 2 is parallel to the axis of the adjustment pin 3 and perpendicular to the axis of the set screw 1. After assembly, the adjusting screw 2 extends into the rectangular slot on the front bamboo shoot clamp 5 or the rear bamboo shoot clamp 6 without contacting the bottom of the slot. In other words, the length of the threaded section of the adjusting screw 2 is less than the depth of the rectangular slot on the front bamboo shoot clamp 5. The front adjusting screw 2 is made of alloy steel, which is quenched and tempered after processing to achieve a certain hardness, and the surface is sandblasted and phosphated for corrosion protection.

[0074] Reference Figure 6 The adjusting pin 3 is a square-headed cylindrical pin with a columnar structure at one end and a rectangular parallelepiped structure at the other end. A rectangular slot is provided on the side wall of the rectangular parallelepiped structure, which can be clamped on the knurled cylindrical handle of the adjusting screw 2, and the two are matched with a small gap. The axial length of the columnar structure of the adjusting pin 3 is greater than the depth of the rectangular slots on the front bamboo shoot clamping block 5 and the rear bamboo shoot clamping block 6, so that the adjusting pin 3 can move along the axis driven by the adjusting screw 2, so that when the end of the adjusting pin 3 abuts against the bottom surface of the rectangular slots of the front bamboo shoot clamping block 5 and the rear bamboo shoot clamping block 6, it can radially push the front bamboo shoot clamping block 5 and the rear bamboo shoot clamping block 6 to adjust the radial position of the front bamboo shoot clamping block 5 and the rear bamboo shoot clamping block 6. An inclined surface is provided on the side wall of the columnar structure and near the end face of the columnar structure to facilitate the columnar end of the adjusting pin 3 to extend into the rectangular slot.

[0075] The material of the adjustment pin 3 is alloy steel, which is quenched and tempered after processing to achieve a certain hardness, and the surface is sandblasted and phosphated for corrosion protection.

[0076] Reference Figure 7 and Figure 8. The support body 4 is in the shape of a rectangular plate as a whole, with an outer columnar structure and an inclined surface on the side wall near the end. The contour shape is designed according to the overall outer contour of the feed cam mechanism. A through hole is provided in the support body along the length direction, and the circular through hole is located in the middle of the support body. The diameter is the same as the cylindrical diameter of the cam 8, and the two are clearance-matched. Rectangular through holes are provided at both ends of the circular through hole, which are arranged in an anti-symmetrical manner and connected to the circular notch. The circular through holes are connected and arranged in an anti-symmetrical manner. A protrusion is provided along the radial direction of the circular hole at the connection between the rectangular hole and the circular through hole, which can be stuck in the annular groove on the side wall of the cam 8. The front bamboo shoot pressure block 5 or the rear bamboo shoot pressure block 6 is located in the rectangular through hole. During disassembly, the cam 8 is inserted into the circular through hole of the support body in the front bamboo shoot disassembler and the rear bamboo shoot disassembler, and the front bamboo shoot 10 and the rear bamboo shoot 11 are respectively inserted into the rectangular through holes on the support body in the front bamboo shoot disassembler and the rear bamboo shoot disassembler. Threaded holes are formed at both ends of the support body and are connected to the rectangular through holes at both ends respectively for installing the fastening screws 1 .

[0077] The support body in the front bamboo shoot disassembler and the support body in the rear bamboo shoot disassembler have the same structural shape. The support body 4 is made of alloy steel, which is quenched and tempered after processing to achieve a certain hardness and is sandblasted and phosphated for corrosion protection on the surface.

[0078] Reference Figures 9-11 The front bamboo shoot clamping block 5 is a rectangular structure as a whole. The two front bamboo shoot clamping blocks 5 are respectively located in the rectangular notches at both ends of the support body 4 in the front bamboo shoot disassembler. A cylindrical boss is provided at one end of the front bamboo shoot clamping block 5, and an L-shaped inclined notch is provided at the end of the boss. The shape and angle of the notch are consistent with the outer dimensions of the notch at the end of the front bamboo shoot clamping block, and the L-shaped notch matches the inclined surface of the end of the front bamboo shoot clamping block. A U-shaped notch is provided on one side of the rectangular structure of the front bamboo shoot clamping block 5. The opening direction of the notch is perpendicular to the axis of the cylindrical boss. A U-shaped hole is provided in the middle of one side wall of the U-shaped notch, which can be clamped into the annular groove at the end of the set screw. The end of the set screw 1 passes through the U-shaped hole and rests on the other side wall of the U-shaped slot. The head of the set screw is located in the cavity of the U-shaped notch. Rotating the set screw 1 can drive the front bamboo shoot clamping block 5 to move forward, axially compressing the front bamboo shoot 10.

[0079] A rectangular groove is provided on the other side of the rectangular structure, facing in the opposite direction from the U-shaped hole. One side of the groove has a sloped inner wall. After assembly, the adjustment screw 2 can extend into the groove without contacting its bottom surface. Under the action of the adjustment screw 2, the sloped end surface of the adjustment pin 3 mates with the sloped surface in the groove, allowing axial movement. The end surface of the adjustment pin 3 abuts the bottom surface of the groove, radially pushing and adjusting the radial position of the front or rear bamboo shoot clamp 5 or 6.

[0080] The front clamping block 5 is made of alloy steel, which is quenched and tempered after processing to achieve a certain hardness, and is sandblasted and phosphated for corrosion protection on the surface.

[0081] Reference Figure 12 and Figure 13 The rear bamboo shoot clamping block 6 has the same overall structure as the front and rear bamboo shoot clamping blocks 5. Except that the direction of the L-shaped notch at the end of the cylindrical boss on the rear bamboo shoot clamping block 6 is centrally symmetrical with the direction of the L-shaped notch at the end of the cylindrical boss on the front bamboo shoot clamping block 5, the other structural features and assembly relationships are completely consistent.

[0082] The rear clamping block 6 is made of alloy steel, which is quenched and tempered after processing to achieve a certain hardness, and the surface is sandblasted and phosphated for corrosion protection.

[0083] The following describes the installation process of the front bamboo shoot remover. The installation process of the rear bamboo shoot remover is the same as the front bamboo shoot remover. The specific steps are as follows:

[0084] First, install two set screws 1 at both ends of the support body 2 through threaded connection, and extend them into the rectangular through hole of the support body 4 for a certain distance, in this embodiment, 8 mm;

[0085] Then, fit the U-shaped hole on the front bamboo shoot clamping block 5 into the annular groove on the side wall of the set screw 1; rotate the front bamboo shoot clamping block 5 90° clockwise so that the cylindrical boss of the front bamboo shoot clamping block 5 faces the side of the circular through hole of the support body, and the rectangular groove on the front bamboo shoot clamping block 5 faces the installation position of the adjustment screw 2; at this time, the set screw 1 does not axially press the front bamboo shoot clamping block;

[0086] The knurled cylindrical handle of the adjusting screw 2 is then embedded in the rectangular slot on the rectangular structure of the adjusting pin 3. Rotating the adjusting screw 2 drives the adjusting pin 3 to move axially. The end face of the adjusting pin 3 rests on the bottom wall of the rectangular slot of the front bamboo shoot pressing block to push and adjust the radial position of the front bamboo shoot pressing block 5.

[0087] At this point, the front bamboo shoot remover is assembled. Follow the same method to assemble the front bamboo shoot installer.

[0088] When the disassembly and assembly device of the present invention is used to disassemble the feed cam mechanism, the front bamboo shoot holder installer and the rear bamboo shoot holder installer are respectively placed at the front and rear positions of the feed cam mechanism, so that the front bamboo shoot holder 10 and the rear bamboo shoot holder 11 are respectively located in the rectangular through hole in the middle of the support body 4, the cam 8 is located in the circular through hole of the support body 4, and the annular groove on the side wall of the cam 8 is stuck in the protrusion at the connection between the circular through hole and the rectangular through hole in the support body 4. Rotating the adjustment screw 2 drives the adjustment pin 3 to move axially, pushing the notches at the end of the cylindrical bosses of the front bamboo shoot clamping block 5 and the rear bamboo shoot clamping block 6 to align with the oblique surfaces of the notches at the end of the front bamboo shoot clamping block 10 and the rear bamboo shoot clamping block 11, respectively; rotating the set screw 1, the cylindrical bosses of the front bamboo shoot clamping block 5 and the rear bamboo shoot clamping block 6 axially press the front bamboo shoot clamping block 10 and the rear bamboo shoot clamping block 11, so that a gap is generated between the notches on the side walls of the front bamboo shoot clamping block 10 and the rear bamboo shoot clamping block 11 and the bamboo shoot clamping pin 12, thereby realizing the rapid disassembly of the various components of the feed cam mechanism;

[0089] When assembling the various components of the feed cam mechanism, first place the front bamboo shoot 10, the rear bamboo shoot 11 and the bamboo shoot pin 12 in the corresponding mounting hole positions on the cam 8, and then place the front bamboo shoot installer and the rear bamboo shoot installer in the front and rear positions of the feed cam mechanism, so that the front bamboo shoot 10 and the rear bamboo shoot 11 are respectively located in the rectangular through hole in the middle of the support body 4, and the cam 8 is located in the circular through hole of the support body 4; use the small wrench 7 to adjust the front bamboo shoot 10 and the rear bamboo shoot 11. The bamboo shoots 11 are positioned so that the notches at their ends are aligned with the notches on the end faces of the cylindrical protrusions on the front bamboo shoot pressing block 5 and the rear bamboo shoot pressing block 6, respectively. By rotating the set screw 1, the cylindrical protrusions on the front bamboo shoot pressing block 5 and the rear bamboo shoot pressing block 6 respectively press the front bamboo shoots 10 and the rear bamboo shoots 11 axially into the corresponding mounting holes on the cam 8, so that the side walls of the front bamboo shoots 10 and the rear bamboo shoots 11 are radially limited by the bamboo shoot pins 12, thereby realizing the rapid and accurate assembly of the various components of the feed cam mechanism.

[0090] The adoption of the device of the utility model greatly saves the time for disassembling and assembling the bullet feeding cam mechanism, and improves the overall use and maintenance efficiency of the aircraft gun.

[0091] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. A portable disassembly and assembly device for a feed cam mechanism, the feed cam mechanism comprising a cam (8), a bamboo shoot spring (9), a front bamboo shoot (10), a rear bamboo shoot (11) and a bamboo shoot pin (12), wherein the bamboo shoot spring (9) is installed in the center hole of the front bamboo shoot (10) and the rear bamboo shoot (11), the bamboo shoot pin (12) is installed in the axial center pin hole of the cam (8), the front bamboo shoot and the rear bamboo shoot are radially installed on the cam respectively, and the notches on the side walls cooperate with the side walls of the bamboo shoot pin, and the ends of the front bamboo shoot and the rear bamboo shoot are provided with inclined surfaces, characterized in that The disassembly and assembly device includes a front shoot disassembly and assembly device, a rear shoot disassembly and assembly device, and a small wrench; The front bamboo shoot disassembler comprises a first support body, a first set screw, a first adjustment screw, a first adjustment pin and a front bamboo shoot pressure block (5); the first support body is in the shape of a rectangular plate, a circular through hole is provided in the middle of the first support body, the inner diameter of which is equal to the outer diameter of the cam (8), rectangular holes are provided at both ends of the circular through hole, which are connected to the circular through hole and are arranged in an anti-symmetrical manner, and a protrusion is provided along the radial direction of the circular hole at the connection between the rectangular hole and the circular through hole, which can be stuck in the annular groove on the side wall of the cam (8); The two first set screws are respectively installed at both ends of the first support body and extend into the rectangular hole, and an annular groove is provided on the side wall of the first set screw near the end; One end of the front bamboo shoot clamping block (5) is provided with a cylindrical protrusion, and the end of the cylindrical protrusion is provided with a notch, which can be matched with the notch at the end of the front bamboo shoot clamping block (10); a notch is provided on one side of the other end of the front bamboo shoot clamping block (5), and a U-shaped hole is provided on the notch, and the U-shaped hole can be clamped in the annular groove of the first fastening screw, and the opening direction of the notch and the U-shaped hole is perpendicular to the axis of the cylindrical protrusion; a rectangular groove is provided on the other side of the other end of the front bamboo shoot clamping block (5), and the rectangular groove is opposite to the opening direction of the U-shaped hole; A first adjusting screw and a first adjusting pin are installed on the side walls of the two rectangular holes on the support body (4) on opposite sides. The axes of the first adjusting screw and the first adjusting pin are perpendicular to the axis of the first set screw. The threaded end of the first adjusting screw can be located in the rectangular groove on the side wall of the front bamboo shoot pressing block and does not contact the bottom of the groove. The first adjusting pin can move along the axial direction under the drive of the first adjusting screw and can push the front bamboo shoot pressing block (5) to adjust the radial position of the front bamboo shoot pressing block when the end face of the first adjusting pin contacts the bottom wall of the rectangular groove on the front bamboo shoot pressing block (5). The rear bamboo shoot disassembler comprises a second support, a second set screw, a second adjustment screw, a second adjustment pin and a rear bamboo shoot pressing block (6); the installation positions of the second set screw, the second adjustment screw and the second adjustment pin on the second support are the same as the installation positions of the first set screw, the first adjustment screw and the first adjustment pin in the front bamboo shoot disassembler; One end of the rear bamboo shoot clamping block (6) is provided with a cylindrical protrusion, and the end of the cylindrical protrusion is provided with a notch, which can be matched with the notch at the end of the rear bamboo shoot clamping block (11), and the direction of the notch on the rear bamboo shoot clamping block is centrally symmetrical with the direction of the notch on the front bamboo shoot clamping block (5); the shape and structure of the other end of the rear bamboo shoot clamping block (6) is the same as that of the front bamboo shoot clamping block (5); The small spanner is used to adjust the postures of the front shoot (10) and the rear shoot (11) when assembling the ejection cam mechanism.

2. The disassembly and assembly device according to claim 1, characterized in that: The front clamping block (5) comprises a cylindrical convex block and a rectangular parallelepiped structure, wherein the cylindrical convex block is vertically arranged on the rectangular parallelepiped structure; The end of the cylindrical protrusion is provided with an L-shaped notch; A rectangular groove is formed on one side of the rectangular parallelepiped structure, the groove direction is parallel to the axis of the cylindrical protrusion, and an inner side wall of the rectangular groove is an inclined surface, which can cooperate with the inclined surface of the end of the first adjustment pin; A U-shaped notch is provided on the other side of the rectangular parallelepiped structure, and the opening direction of the U-shaped notch is perpendicular to the opening direction of the rectangular groove, and the opening direction is opposite; A U-shaped hole is provided on the U-shaped notch and on the side wall away from the cylindrical protrusion, and the opening direction is opposite to the opening direction of the rectangular groove.

3. The disassembly and assembly device according to claim 1, characterized in that: The first adjusting screw and the second adjusting screw are both in the shape of a second-order rotational body, with knurling on the side wall of the large end serving as a handle and a stud on the small end.

4. The disassembly and assembly device according to claim 3, characterized in that: The first adjustment pin and the second adjustment pin have the same shape and size; one end is a rectangular parallelepiped structure, and the other end is a columnar structure; a rectangular slot is provided on the side wall of the rectangular parallelepiped structure, and the rectangular slot can be clamped on the large end of the first adjustment screw or the second adjustment screw; An inclined surface is provided on the side wall of the columnar structure near the end.

5. The disassembly and assembly device according to claim 1, characterized in that: The first set screw and the second set screw have the same structure and shape; the first set screw and the second set screw are in the shape of a second-order rotating body, with knurling on the outer wall of the large end; the small end is a screw, and an annular groove is provided on the side wall of the small end and near the end of the small end.

6. The disassembly and assembly device according to claim 1, characterized in that: The small wrench is a rectangular plate with a notch at the end. The notch can be clamped on the inclined surface of the end of the front or rear clamping shoot and the notch located on the back of the inclined surface.

7. The disassembly and assembly device according to claim 1, characterized in that: The outer contours of the first support body and the second support body are designed according to the overall outer contour of the feed cam mechanism.

8. The disassembly and assembly device according to any one of claims 1 to 7, characterized in that: The disassembly and assembly device is made of alloy steel material, which is subjected to quenching and tempering treatment after processing, and the surface is sandblasted and phosphating for corrosion protection.

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