Positioning device and method for hard guide combination assembly welding of two-way two-way ammunition feeding system

Abstract

The invention provides a positioning device and method for hard guide combination assembly welding of a two-way two-way ammunition feeding system, left-way grenade feeding hard guide assemblies and right-way armor-piercing ammunition feeding hard guide assemblies are machined respectively, and left-way ammunition feeding hard guide assemblies and right-way ammunition feeding hard guide assemblies belong to rigid guide and are different from side-by-side up-down spiral ammunition passing channels; the hard guide channel components are of 90-degree arc-shaped tubular structures with the two ends open, are arranged in a fan shape and are symmetrically assembled on the left side and the right side of the gun barrel. The bullet supply hard guide serves as a special-shaped structural part, accurate positioning of the positions and the sizes of all assemblies is achieved by fixing the assembling position of the arc-shaped face of the hard guide, deformation of the hard guide frame in the assembling process is controlled, error accumulation of a left bullet supply system and a right bullet supply system can be effectively avoided, and the critical size precision and the position precision are guaranteed; and meanwhile, the assembling and welding method effectively solves the problems that the bullet supply hard guide positioning difficulty is large, the assembling precision is poor, and the bullet passing smoothness is poor, and the operation method is simple, efficient and suitable for batch production.

Description

Technical Field

[0001] The invention relates to a novel assembly welding method for a remote control weapon station, in particular to a positioning device for assembly welding of a dual-path bidirectional ammunition feeding system and a method for assembling and welding a hard guide assembly using the positioning device. Background Art

[0002] The bidirectional dual-path ammunition supply hard guide belongs to the firepower subsystem of the remote-controlled weapon combat system. It adopts a left-right symmetrical chainless bidirectional dual-path ammunition supply system. It is mainly used to connect the soft guide and the ammunition box to realize the function of two-way ammunition supply for grenades and armor-piercing shells, which plays a vital role in shooting accuracy.

[0003] At present, the weapon station has a compact structure, and the hard guide adopts an arc structure that is symmetrically assembled on the left and right sides of the gun barrel. The hard guide assembly is composed of a strip chain slide and a columnar guide rod that are bent and welded to form a fan-shaped guide structure. Based on the weight limit of the weapon station, the dual-path ammunition supply system is generally designed as a thin-walled bent part. In addition, since armor-piercing shells and grenades need to be replaced quickly and frequently during shooting, the requirements for smooth guidance of ammunition are relatively high.

[0004] In summary, in order to meet the controllability of independent ammunition feeding and the complex and changeable ammunition feeding needs, and to simultaneously meet the position accuracy and dimensional accuracy requirements of the dual-channel ammunition feeding system, it is urgent to propose a new combined welding method. Summary of the invention

[0005] The technical problems to be solved by the present invention are:

[0006] For thin-walled curved parts, by controlling the arc processing elements, the key dimensions of the left and right dual-path ammunition feeding hard guide are positioned. The present invention proposes a combined assembly welding positioning device, which processes the left-path grenade and right-path armor-piercing ammunition feeding hard guide components respectively, solving the problems of difficult positioning of the left and right dual-path ammunition feeding hard guides, poor assembly accuracy, and poor smoothness of ammunition passing, and ensures the key dimensional accuracy and position accuracy. The combined assembly welding device includes a bottom plate, a positioning block, a positioning side plate assembly, and a positioning side plate, which can realize fast and accurate positioning of the hard guide, and is efficient and convenient.

[0007] The technical solution of the present invention is:

[0008] A positioning device for hard guide assembly welding of a dual-way bidirectional ammunition feeding system, characterized in that it comprises a bottom plate 1, a first positioning block 2, a second positioning block 3, a first positioning side plate assembly 4, a first square positioning block 5, a second positioning side plate 6, a third positioning block 7, a fourth positioning block 8, a third positioning side plate 9, a fifth positioning block 10, a second square positioning block 11, a sixth positioning block 12, a fourth positioning side plate assembly 13, a seventh positioning block 14, a third square positioning block 15, a fourth square positioning block 16, an eighth positioning block 17, a fifth positioning side plate 18, a ninth positioning block 19, a tenth positioning block 20, a sixth positioning side plate 21, a ninth square positioning block 22, a seventh positioning side plate assembly 23, an eleventh positioning block 24, and a twelfth positioning block 25;

[0009] The bottom plate 1 is a main body for installing the positioning device, and the first positioning block 2, the second positioning block 3, the first positioning side plate assembly 4, the first square positioning block 5, the second positioning side plate 6, the third positioning block 7, the fourth positioning block 8, the third positioning side plate 9, the fifth positioning block 10, the second square positioning block 11, the sixth positioning block 12, the fourth positioning side plate assembly 13, the seventh positioning block 14, the third square positioning block 15, the fourth square positioning block 16, the eighth positioning block 17, the fifth positioning side plate 18, the ninth positioning block 19, the tenth positioning block 20, the sixth positioning side plate 21, the ninth square positioning block 22, the seventh positioning side plate assembly 23, the eleventh positioning block 24, and the twelfth positioning block 25 are inserted into the card slot and fixed on the bottom plate.

[0010] Furthermore,

[0011] The bottom plate 1 is provided with a first slot 101, a second slot 102, a third slot 103 and a fourth slot 104 along the direction of the grenade hard guide frame III 32 for guiding the projectile, and the first square positioning block 5, the first positioning side plate assembly 4, the first positioning block 2 and the second positioning block 3 are respectively installed to fix the grenade hard guide frame III 32;

[0012] The bottom plate 1 is provided with a fifth slot 105, a sixth slot 106, a seventh slot 107, an eighth slot 108, a ninth slot 109 and a tenth slot 110 along the direction of the grenade hard guide frame II33 for guiding the projectile, and the second positioning side plate 6, the third positioning block 7, the fourth positioning block 8, the third positioning side plate 9, the fifth positioning block 10 and the second square positioning block 11 are respectively installed to fix the grenade hard guide frame II33;

[0013] The bottom plate 1 is provided with an eleventh slot 111, a twelfth slot 112, a thirteenth slot 113 and a fourteenth slot 114 along the direction of the grenade hard guide frame Ⅰ34 for guiding the projectile, and the third rectangular positioning block 15, the fourth positioning side plate assembly 13, the seventh positioning block 14 and the sixth positioning block 12 are respectively installed to fix the grenade hard guide frame Ⅰ34 and the armor-piercing projectile hard guide frame Ⅰ35;

[0014] The bottom plate 1 is provided with a fifteenth slot 115, a sixteenth slot 116, a seventeenth slot 117, an eighteenth slot 118, a nineteenth slot 119 and a twentieth slot 120 along the direction of the armor-piercing projectile hard guide frame II36, on which a fourth square positioning block 16, an eighth positioning block 17, a fifth positioning side plate 18, a ninth positioning block 19, a tenth positioning block 20 and a sixth positioning side plate 21 are respectively installed for fixing the armor-piercing projectile hard guide frame II36;

[0015] The bottom plate 1 is provided with a twenty-first slot 121, a twenty-second slot 122, a twenty-third slot 123 and a twenty-fourth slot 124 along the direction of the armor-piercing projectile hard guide frame III37, on which the ninth square positioning block 22, the eleventh positioning block 24, the twelfth positioning block 25 and the seventh positioning side plate assembly 23 are respectively installed to fix the armor-piercing projectile hard guide frame III37.

[0016] Furthermore, the card slots are all through slots, which are consistent with the size of the positioning blocks, cooperate with each other, and are correspondingly inserted.

[0017] Furthermore,

[0018] The first positioning side plate assembly 4 is composed of a first positioning pressure plate 401, a first nut 402 and a first bolt 403. The first nut 402 is welded vertically on the end surface of the first positioning pressure plate 401 and cooperates with the first bolt 403.

[0019] The fourth positioning side plate assembly 13 is composed of a fourth positioning plate 1301, a fourth nut 1302 and a fourth bolt 1303. The fourth nut 1302 is welded vertically on the end surface of the fourth positioning plate 1301 and cooperates with the fourth bolt 1303.

[0020] The seventh positioning side plate assembly 23 is composed of a seventh positioning pressure plate 2301 , a seventh nut 2302 and a seventh bolt 2303 . The seventh nut 2302 is welded vertically on the end face of the seventh positioning pressure plate 2301 and cooperates with the seventh bolt 2303 .

[0021] Furthermore,

[0022] The first bolt 403, the fourth bolt 1303, and the seventh bolt 2303 are standard parts, and the model is GB / T5781-2000-M12×40;

[0023] The first nut 402, the fourth nut 1302, and the seventh nut 2302 are standard parts, and the model is GB / T56-1988.

[0024] Furthermore,

[0025] The narrow side end surface of the second positioning side plate 6 is in close contact with the inner surface of the third positioning block 7, and its end surface is flush with the long side end surface of the third positioning block 7;

[0026] The narrow side end surface of the sixth positioning side plate 21 is in close contact with the inner surface of the tenth positioning block 20 , and its end surface is flush with the long side end surface of the tenth positioning block 20 .

[0027] Furthermore, the base plate 1 and all positioning blocks are made of high-quality carbon steel after quenching.

[0028] The present invention also proposes a hard guide assembly welding method for a dual-path bidirectional ammunition feeding system, which is characterized by comprising the installation of a positioning device and the hard guide assembly welding.

[0029] Furthermore, the positioning device installation step includes:

[0030] Step 1-1, insert the first square positioning block 5 into the first slot 101, insert the first positioning side plate 401 of the first positioning side plate assembly 4 into the second slot 102, insert the first positioning block 2 and the second positioning block 3 into the rectangular third slot 103 and the fourth slot 104 respectively, the positioning block is flush with the bottom surface of the pressing plate, ensure that the four surfaces of each positioning block are tightly attached to the slot, and fix the upper plane of the bottom plate 1 and the contact surface of the positioning block by positioning welding;

[0031] Step 1-2, insert the second positioning side plate 6 into the fifth slot 105, the third positioning block 7 into the sixth slot 106, the fourth positioning block 8 into the seventh slot 107, the third positioning side plate 9 into the eighth slot 108, the fifth positioning block 10 into the ninth slot 109, and the second square positioning block 11 into the tenth slot 110. The positioning blocks are flush with the bottom surface of the pressing plate, ensuring that the four surfaces of each positioning block are in close contact with the slots, and fix the upper plane of the bottom plate 1 to the positioning blocks by positioning welding;

[0032] Step 1-3, insert the third rectangular positioning block 15 into the eleventh slot 111, insert the fourth positioning side plate 1301 of the fourth positioning side plate assembly 13 into the twelfth slot 112, insert the seventh positioning block 14 into the thirteenth slot 113, insert the sixth positioning block 12 into the fourteenth slot 114, the positioning blocks are flush with the bottom surface of the pressure plate, ensure that the four surfaces of each positioning block are tightly attached to the slot, and fix the upper plane of the bottom plate 1 to the positioning blocks by positioning welding;

[0033] Step 1-4, insert the fourth square positioning block 16 into the fifteenth slot 115, the eighth positioning block 17 into the sixteenth slot 116, the fifth positioning side plate 18 into the seventeenth slot 117, the ninth positioning block 19 into the eighteenth slot 118, the tenth positioning block 20 into the nineteenth slot 119, and the sixth positioning side plate 21 into the twentieth slot 120, the positioning blocks are flush with the bottom surface of the pressing plate, ensure that the four surfaces of each positioning block are in close contact with the slot, and fix the upper plane of the bottom plate 1 and the contact surface of the positioning blocks by positioning welding;

[0034] Step 1-5, insert the ninth square positioning block 22 into the twenty-first slot 121, the eleventh positioning block 24 into the twenty-second slot 122, the twelfth positioning block 25 into the twenty-third slot 123, and the seventh positioning side plate 2301 of the seventh positioning side plate assembly 23 into the twenty-fourth slot 124. The positioning blocks are flush with the bottom surface of the pressure plate, ensuring that the four surfaces of each positioning block are in close contact with the slots, and fix the upper plane of the base plate 1 to the positioning blocks by positioning welding.

[0035] Furthermore, the hard conductor assembly welding step includes:

[0036] Step 2-1: Ensure that the grenade hard guide frame III32 is accurately positioned and firmly fixed vertically on the base plate 1:

[0037] The grenade hard guide frame III32 is perpendicular to the bottom plate 1, inserted into the gap between the first positioning block 2 and the second positioning block 3, and clamped on both sides. The end face is vertically pressed against the first square positioning block 5. The end face of the first positioning pressure plate 401 of the first positioning side plate assembly 4 is vertically pressed against the grenade hard guide frame III32, and its height exceeds the frame center height of the grenade hard guide frame III32. The first bolt 403 passes through the long through hole in the center of the grenade hard guide frame III32 and is matched with the first nut 402 to be connected. The heights of the first positioning block 2, the second positioning block 3 and the first square positioning block 5 are flush with the horizontal inner surface of the grenade hard guide frame III32.

[0038] Step 2-2: Ensure that the grenade hard guide frame I34 is accurately positioned and firmly fixed vertically on the base plate 1:

[0039] The grenade hard guide frame I34 is perpendicular to the bottom plate 1, inserted into the gap between the sixth positioning block 12 and the seventh positioning block 14, and clamped on both sides. The end face is vertically pressed against the third rectangular positioning block 15. The end face of the fourth positioning pressure plate 1301 of the fourth positioning side plate assembly 13 is vertically pressed against the grenade hard guide frame I34, and its height exceeds the frame center height of the grenade hard guide frame I34. The fourth bolt 1303 passes through the long through hole in the center of the grenade hard guide frame I34 and is matched with the fourth nut 1302 to connect. The sixth positioning block 12, the seventh positioning block 14 and the third rectangular positioning block 15 are of the same height and flush with the upper edge of the contact surface between the grenade hard guide frame I34 and the bottom plate 1;

[0040] Step 2-3: Ensure that the grenade hard guide frame II33 is accurately positioned and firmly fixed vertically on the base plate 1:

[0041] Place the grenade hard guide frame II33 perpendicular to the bottom plate 1, insert it into the gap between the third positioning block 7 and the fifth positioning block 10, clamp it on both sides, and press the end face against the second square positioning block 11 vertically. The fourth positioning block 8 and the narrow side end face of the third positioning side plate 9 clamp the grenade hard guide frame II33 firmly. The fourth positioning block 8, the third positioning block 7 and the fifth positioning block 10 are consistent in shape and height, flush with the upper edge of the fitting surface of the grenade hard guide frame II33 and the bottom plate 1. The second positioning side plate 6 and the third positioning side plate 9 are consistent in shape and height, and their height exceeds the frame center height of the grenade hard guide frame II33 to ensure the verticality of the grenade hard guide frame II33.

[0042] Step 2-4: Install the chain slide and guide rod according to the positioning device. After ensuring that the components are welded and fixed, remove the grenade hard guide frame assembly:

[0043] Pass the 6 processed L-shaped chain slides through the grenade hard guide frame II33, fix the two ends at the bayonet positions of the grenade hard guide frame I34 and the grenade hard guide frame III32 respectively, and fix the positions where the hard guide frame and the chain slides fit together by welding in sequence: the longest L-shaped chain slide and the chain slide pass through the grenade hard guide frame II33, the tangent direction of their arc-shaped outer edges fits with the notch position of the grenade hard guide frame II33, the L-shaped chain slide openings face each other and downward, and the narrow side presses against the radial inner side; the L-shaped chain slide and the chain slide openings close to the inner side face each other and upward, and the tangent direction of their arc-shaped inner edges fits with the upper shoulders on both sides of the middle square frame of the grenade hard guide frame II33; the shortest L-shaped chain slide and the chain slide openings face each other and upward, and the L-shaped chain slide just fits against the lower end corners on both sides of the middle square frame of the grenade hard guide frame II33;

[0044] The five processed cylindrical guide rods are respectively passed through the four arc corners reserved by the central square outline of the grenade hard guide frame Ⅱ33, and fixed to the four corresponding arc corners of the grenade hard guide frame Ⅰ34 and the grenade hard guide frame Ⅲ32. The circular end faces of the guide rod steps are flush with the planes of the grenade hard guide frame Ⅰ34 and the grenade hard guide frame Ⅲ32 in the bullet passing direction, and the contact surfaces of the guide rod and the grenade hard guide frame Ⅱ33 are fixedly welded;

[0045] Step 2-5: Ensure that the armor-piercing projectile hard guide frame III37 is accurately positioned and firmly fixed vertically on the base plate 1:

[0046] The armor-piercing hard guide frame III37 is perpendicular to the bottom plate 1, inserted into the gap between the eleventh positioning block 24 and the twelfth positioning block 25, and clamped on both sides. The end face is vertically pressed against the ninth square positioning block 22. The end face of the seventh positioning pressure plate 2301 of the seventh positioning side plate assembly 23 is vertically pressed against the armor-piercing hard guide frame III37, and its height exceeds the frame center height of the armor-piercing hard guide frame III37. The seventh bolt 2303 passes through the long through hole in the center of the armor-piercing hard guide frame III37 and is matched with the seventh nut 2302 to be connected. The height of the ninth square positioning block 22, the eleventh positioning block 24 and the twelfth positioning block 25 are flush with the horizontal inner surface of the armor-piercing hard guide frame III37.

[0047] Step 2-6: Ensure that the armor-piercing projectile hard guide frame I35 is accurately positioned and firmly fixed vertically on the base plate 1:

[0048] The armor-piercing hard guide frame I35 is perpendicular to the bottom plate 1, inserted into the gap between the sixth positioning block 12 and the seventh positioning block 14, and clamped on both sides. The end face is vertically pressed against the third rectangular positioning block 15. The end face of the fourth positioning pressure plate 1301 of the fourth positioning side plate assembly 13 is vertically pressed against the armor-piercing hard guide frame I35, and its height exceeds the frame center height of the armor-piercing hard guide frame I35. The fourth bolt 1303 passes through the long through hole at the center of the armor-piercing hard guide frame III37 and is connected with the fourth nut 1302. The sixth positioning block 12, the seventh positioning block 14, and the third rectangular positioning block 15 are of the same height and flush with the upper edge of the fitting surface of the armor-piercing hard guide frame I35 and the bottom plate 1.

[0049] Step 2-7: Ensure that the armor-piercing projectile hard guide frame II36 is accurately positioned and firmly fixed vertically on the base plate 1:

[0050] The armor-piercing hard guide frame II36 is perpendicular to the bottom plate 1, inserted into the gap between the eighth positioning block 17 and the tenth positioning block 20, and clamped on both sides. The end face is vertically pressed against the fourth square positioning block 16. The ninth positioning block 19 and the narrow side end face of the fifth positioning side plate 18 clamp the armor-piercing hard guide frame II36 firmly. The eighth positioning block 17, the ninth positioning block 19 and the tenth positioning block 20 are consistent in shape and height, flush with the upper edge of the fitting surface of the armor-piercing hard guide frame II36 and the bottom plate 1. The fifth positioning side plate 18 and the sixth positioning side plate 21 are consistent in shape and height, and their height exceeds the frame center height of the armor-piercing hard guide frame II36 to ensure the verticality of the armor-piercing hard guide frame II36.

[0051] Step 2-8: Install the chain slide and guide rod according to the positioning device. After ensuring that the components are welded and fixed, remove the armor-piercing hard guide frame assembly:

[0052] Pass the processed 6 L-shaped chain slides through the armor-piercing hard guide frame Ⅱ36 respectively, and fix the two ends at the bayonet positions of the armor-piercing hard guide frame Ⅰ35 and the armor-piercing hard guide frame Ⅲ37 respectively, and fix the positions where the hard guide frame and the chain slides are fitted by welding in sequence: the two chain slides near the outer edge and the middle are tangentially fitted with the notch position, and the ends are pressed against the inner side of the armor-piercing hard guide frame Ⅱ36; the two chain slides near the inner side, the L-shaped chain slides just fit the corners of the lower ends of both sides of the armor-piercing hard guide frame Ⅱ36;

[0053] The five processed cylindrical guide rods are respectively passed through the four arc corners reserved in the central square contour of the armor-piercing hard guide frame Ⅱ36, and fixed at the corresponding four arc corners of the armor-piercing hard guide frame Ⅰ35 and the armor-piercing hard guide frame Ⅲ37. The circular end face of the guide rod step is flush with the plane of the armor-piercing hard guide frame Ⅰ35 and the armor-piercing hard guide frame Ⅲ37 in the projectile passing direction, and the contact surface between the guide rod and the armor-piercing hard guide frame Ⅱ36 is fixed and welded.

[0054] The beneficial effects of the present invention are:

[0055] 1. The present invention proposes a positioning device for the assembly and welding of a dual-path bidirectional ammunition feeding system hard guide assembly, which is used to process the left-path grenade and right-path armor-piercing ammunition feeding hard guide components respectively. The ammunition feeding hard guide is a special-shaped structural part. By fixing the assembly position of the hard guide arc surface, the position and size of each component can be accurately positioned, and the deformation of the hard guide frame during the assembly process can be controlled, which can effectively avoid the accumulation of errors in the left and right ammunition feeding systems and ensure the key dimensional accuracy and position accuracy.

[0056] 2. Install the grenade and armor-piercing projectile hard guide frames on the device respectively, and assemble and weld the strip chain slide and columnar guide rod through multi-component positioning. This method effectively solves the problems of difficult positioning of the ammunition hard guide, poor assembly accuracy, and poor smoothness of bullet passing. The operation method is simple and efficient, and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is a schematic diagram of a grenade hard guide positioning device of the present invention;

[0058] Figure 2 It is a schematic diagram of the positioning device for the hard guide of the armor-piercing projectile of the present invention;

[0059] Figure 3 , Figure 4 It is a structural schematic diagram of a positioning device for a new type of combined assembly of a bullet feeding guide of the present invention;

[0060] Figure 5 , Figure 6 This is a schematic diagram of the ammunition supply hard guidance;

[0061] Figure 7 is a schematic diagram of the base plate structure;

[0062] Figure 8 , Fig. 9 It is a schematic diagram of a positioning device for a new type of combined assembly;

[0063] Fig.10 , Fig.11 It is a schematic diagram of the assembly of a new type of combined device for hard guidance of left-side grenades;

[0064] Fig.12 It is a schematic diagram of the square positioning block structure;

[0065] Fig.13 It is a schematic diagram of the positioning side panel structure;

[0066] Fig.14 It is a schematic diagram of the positioning block structure;

[0067] Fig.15 is a structural schematic diagram of the first positioning side plate assembly 4;

[0068] Fig.16 is a structural schematic diagram of the fourth positioning side plate assembly 13;

[0069] Fig.17 is a structural schematic diagram of the seventh positioning side plate assembly 23;

[0070] Description of reference numerals:

[0071] 1-bottom plate; 2-first positioning block; 3-second positioning block; 4-first positioning side plate assembly; 5-first square positioning block; 6-second positioning side plate; 7-third positioning block; 8-fourth positioning block; 9-third positioning side plate; 10-fifth positioning block; 11-second square positioning block; 12-sixth positioning block; 13-fourth positioning side plate assembly; 14-seventh positioning block; 15-third square positioning block; 16-fourth square positioning block; 17-eighth positioning block; 18-fifth positioning side plate; 19-ninth positioning block; 20-tenth positioning block; 21-sixth positioning side plate; 22-ninth square positioning block; 23-seventh positioning side plate assembly; 24-eleventh positioning block; 25-twelfth positioning block;

[0072] 101-first card slot; 102-second card slot; 103-third card slot; 104-fourth card slot; 105-fifth card slot; 106-sixth card slot; 107-seventh card slot; 108-eighth card slot; 109-ninth card slot; 110-tenth card slot; 111-eleventh card slot; 112-twelfth card slot; 113-thirteenth card slot; 114-fourteenth card slot; 115-fifteenth card slot; 116-sixteenth card slot; 117-seventeenth card slot; 118-eighteenth card slot, 119-nineteenth card slot; 120-twentieth card slot; 121-twenty-first card slot; 122-twenty-second card slot; 123-twenty-third card slot; 124-twenty-fourth card slot;

[0073] 32-Grenade hard guide frame III; 33-Grenade hard guide frame II; 34-Grenade hard guide frame I; 35-Armor-piercing projectile hard guide frame I; 36-Armor-piercing projectile hard guide frame II; 37-Armor-piercing projectile hard guide frame III;

[0074] 401-first positioning plate; 402-first nut; 403-first bolt;

[0075] 1301- fourth positioning plate; 1302- fourth nut; 1303- fourth bolt;

[0076] 2301-seventh positioning plate; 2302-seventh nut; 2303-seventh bolt. DETAILED DESCRIPTION

[0077] The following examples refer to Figure 1 to Figure 17 , the content of the present invention is further described in detail:

[0078] The present invention proposes a positioning device for assembly welding of a dual-way bidirectional ammunition feeding system hard guide assembly and a method for assembly welding of a hard guide assembly using the positioning device, and processes the left-way grenade and right-way armor-piercing ammunition feeding hard guide components respectively. The left and right dual-way ammunition feeding hard guides belong to rigid guides, which are different from the side-by-side upper and lower spiral bullet-passing channels. The hard guide channel components are 90-degree arc-shaped tubular structures with openings at both ends, arranged in a fan-shaped layout, and symmetrically assembled on the left and right sides of the gun barrel. The radial section composed of the chain slide and the guide rod is used for the passage of armor-piercing projectiles and grenades. The vertical end, the middle part rotated 45 degrees along the circumference, and the horizontal end of the grenade hard guide are respectively grenade hard guide frame I34, grenade hard guide frame II33, and grenade hard guide frame III32; the vertical end, the middle part rotated 45 degrees along the circumference, and the horizontal end of the armor-piercing projectile hard guide are respectively armor-piercing projectile hard guide frame I35, armor-piercing projectile hard guide frame II36, and armor-piercing projectile hard guide frame III37. As a thin-walled curved part, the rigid bullet-passing channel has high requirements for arc dimensional accuracy. The hard guide after assembly should have good passability, and the dimensional accuracy and position accuracy must meet the complex application conditions of the bullet feeding system.

[0079] The present invention includes a bottom plate 1, a first positioning block 2, a second positioning block 3, a first positioning side plate assembly 4, a first square positioning block 5, a second positioning side plate 6, a third positioning block 7, a fourth positioning block 8, a third positioning side plate 9, a fifth positioning block 10, a second square positioning block 11, a sixth positioning block 12, a fourth positioning side plate assembly 13, a seventh positioning block 14, a third square positioning block 15, a fourth square positioning block 16, an eighth positioning block 17, a fifth positioning side plate 18, a ninth positioning block 19, a tenth positioning block 20, a sixth positioning side plate 21, a ninth square positioning block 22, a seventh positioning side plate assembly 23, an eleventh positioning block 24, and a twelfth positioning block 25.

[0080] The base plate 1 is the main body for installing the positioning device, and the first positioning block 2, the second positioning block 3, the first positioning side plate assembly 4, the first square positioning block 5, the second positioning side plate 6, the third positioning block 7, the fourth positioning block 8, the third positioning side plate 9, the fifth positioning block 10, the second square positioning block 11, the sixth positioning block 12, the fourth positioning side plate assembly 13, the seventh positioning block 14, the third square positioning block 15, the fourth square positioning block 16, the eighth positioning block 17, the fifth positioning side plate 18, the ninth positioning block 19, the tenth positioning block 20, the sixth positioning side plate 21, the ninth square positioning block 22, the seventh positioning side plate assembly 23, the eleventh positioning block 24, and the twelfth positioning block 25 are inserted into the card slot and fixed on the base plate 1.

[0081] The first positioning side plate assembly 4 is composed of a first positioning pressure plate 401, a first nut 402 and a first bolt 403. The first nut 402 is welded vertically in a plane and fixed on the end face of the first positioning pressure plate 401, and cooperates with the first bolt 403; the fourth positioning side plate assembly 13 is composed of a fourth positioning pressure plate 1301, a fourth nut 1302 and a fourth bolt 1303. The fourth nut 1302 is welded vertically in a plane and fixed on the end face of the fourth positioning pressure plate 1301, and cooperates with the fourth bolt 1303; the seventh positioning side plate assembly 23 is composed of a seventh positioning pressure plate 2301, a seventh nut 2302 and a seventh bolt 2303. The seventh nut 2302 is welded vertically in a plane and fixed on the end face of the seventh positioning pressure plate 2301, and cooperates with the seventh bolt 2303.

[0082] The base plate 1 is provided with a first slot 101, a second slot 102, a third slot 103 and a fourth slot 104 along the direction of the grenade guiding hard guide frame III32, on which the first square positioning block 5, the first positioning side plate assembly 4, the first positioning block 2 and the second positioning block 3 are respectively installed to fix the grenade hard guide frame III32.

[0083] The base plate 1 is provided with a fifth slot 105, a sixth slot 106, a seventh slot 107, an eighth slot 108, a ninth slot 109 and a tenth slot 110 along the direction of the grenade guiding hard guide frame II33, on which the second positioning side plate 6, the third positioning block 7, the fourth positioning block 8, the third positioning side plate 9, the fifth positioning block 10 and the second square positioning block 11 are respectively installed to fix the grenade hard guide frame II33; wherein the narrow side end face of the second positioning side plate 6 is in close contact with the inner surface of the third positioning block 7, and its end face is flush with the long side end face of the third positioning block 7.

[0084] The base plate 1 is provided with an eleventh slot 111, a twelfth slot 112, a thirteenth slot 113 and a fourteenth slot 114 along the direction of the grenade hard guide frame Ⅰ34 for guiding the projectile, and a third rectangular positioning block 15, a fourth positioning side plate assembly 13, a seventh positioning block 14 and a sixth positioning block 12 are respectively installed to fix the grenade hard guide frame Ⅰ34 and the armor-piercing projectile hard guide frame Ⅰ35.

[0085] The base plate 1 is provided with a fifteenth slot 115, a sixteenth slot 116, a seventeenth slot 117, an eighteenth slot 118, a nineteenth slot 119 and a twentieth slot 120 along the direction of the armor-piercing projectile hard guide frame II36, on which a fourth square positioning block 16, an eighth positioning block 17, a fifth positioning side plate 18, a ninth positioning block 19, a tenth positioning block 20 and a sixth positioning side plate 21 are respectively installed for fixing the armor-piercing projectile hard guide frame II36; wherein the narrow side end face of the sixth positioning side plate 21 is in close contact with the inner surface of the tenth positioning block 20, and its end face is flush with the long side end face of the tenth positioning block 20.

[0086] The bottom plate 1 is provided with a twenty-first slot 121, a twenty-second slot 122, a twenty-third slot 123 and a twenty-fourth slot 124 along the direction of the armor-piercing projectile hard guide frame III37, on which the ninth square positioning block 22, the eleventh positioning block 24, the twelfth positioning block 25 and the seventh positioning side plate assembly 23 are respectively installed to fix the armor-piercing projectile hard guide frame III37.

[0087] All the slots on the bottom plate 1 are through slots. The slots and the positioning blocks are of the same size and fit each other and are inserted accordingly. After the positioning blocks are fixed, the grenade hard guide frame is first inserted into the positioning device, the strip chain slideway and the column guide rod are assembled and welded, and then the grenade hard guide components are removed. The armor-piercing projectile hard guide frame is inserted into the positioning device, the strip chain slideway and the column guide rod are assembled and welded, and then removed after completion. The left and right dual-path ammunition feeding systems are assembled and welded through this device for group assembly.

[0088] The base plate 1 and all positioning blocks are made of high-quality carbon steel after quenching.

[0089] The first bolt 403, the fourth bolt 1303, and the seventh bolt 2303 are standard parts, and the model is GB / T5781-2000-M12×40;

[0090] The first nut 402, the fourth nut 1302, and the seventh nut 2302 are standard parts, and the model is GB / T56-1988.

[0091] The steps for installing the positioning device of the present invention are as follows:

[0092] 1. Insert the first square positioning block 5 into the first slot 101, insert the first positioning side plate 401 of the first positioning side plate assembly 4 into the second slot 102, insert the first positioning block 2 and the second positioning block 3 into the rectangular third slot 103 and the fourth slot 104 respectively, the positioning block is flush with the bottom surface of the pressing plate, ensure that the four surfaces of each positioning block are tightly attached to the slot, and fix the upper plane of the bottom plate 1 and the contact surface of the positioning block by positioning welding;

[0093] 2. Insert the second positioning side plate 6 into the fifth slot 105, the third positioning block 7 into the sixth slot 106, the fourth positioning block 8 into the seventh slot 107, the third positioning side plate 9 into the eighth slot 108, the fifth positioning block 10 into the ninth slot 109, and the second square positioning block 11 into the tenth slot 110. The positioning blocks are flush with the bottom surface of the pressing plate, ensuring that the four surfaces of each positioning block are in close contact with the slots, and fix the upper plane of the bottom plate 1 to the positioning blocks by positioning welding;

[0094] 3. Insert the third rectangular positioning block 15 into the eleventh slot 111, the fourth positioning side plate 1301 of the fourth positioning side plate assembly 13 into the twelfth slot 112, the seventh positioning block 14 into the thirteenth slot 113, and the sixth positioning block 12 into the fourteenth slot 114. The positioning blocks are flush with the bottom surface of the pressure plate, ensuring that the four surfaces of each positioning block are in close contact with the slots, and fix the upper plane of the bottom plate 1 to the positioning blocks by positioning welding;

[0095] 4. Insert the fourth square positioning block 16 into the fifteenth slot 115, the eighth positioning block 17 into the sixteenth slot 116, the fifth positioning side plate 18 into the seventeenth slot 117, the ninth positioning block 19 into the eighteenth slot 118, the tenth positioning block 20 into the nineteenth slot 119, and the sixth positioning side plate 21 into the twentieth slot 120. The positioning blocks are flush with the bottom surface of the pressing plate, ensuring that the four surfaces of each positioning block are in close contact with the slots, and fix the upper plane of the bottom plate 1 and the contact surface of the positioning blocks by positioning welding;

[0096] 5. Insert the ninth square positioning block 22 into the twenty-first slot 121, the eleventh positioning block 24 into the twenty-second slot 122, the twelfth positioning block 25 into the twenty-third slot 123, and the seventh positioning side plate 2301 of the seventh positioning side plate assembly 23 into the twenty-fourth slot 124. The positioning blocks are flush with the bottom surface of the pressure plate, ensuring that the four surfaces of each positioning block are in close contact with the slots, and fix the upper plane of the bottom plate 1 to the positioning blocks by positioning welding.

[0097] The steps of welding the hard conductor assembly of the present invention are as follows:

[0098] 1. Ensure that the grenade hard guide frame III32 is accurately positioned and firmly fixed vertically on the base plate 1:

[0099] The grenade hard guide frame III32 is perpendicular to the bottom plate 1, inserted into the gap between the first positioning block 2 and the second positioning block 3, and clamped on both sides. The end face is vertically pressed against the first square positioning block 5. The end face of the first positioning pressure plate 401 of the first positioning side plate assembly 4 is vertically pressed against the grenade hard guide frame III32, and its height exceeds the frame center height of the grenade hard guide frame III32. The first bolt 403 passes through the long through hole in the center of the grenade hard guide frame III32 and is matched with the first nut 402 to be connected. The heights of the first positioning block 2, the second positioning block 3 and the first square positioning block 5 are flush with the horizontal inner surface of the grenade hard guide frame III32.

[0100] 2. Ensure that the grenade hard guide frame I34 is accurately positioned and firmly fixed vertically on the base plate 1:

[0101] The grenade hard guide frame I34 is perpendicular to the bottom plate 1, inserted into the gap between the sixth positioning block 12 and the seventh positioning block 14, and clamped on both sides. The end face is vertically pressed against the third rectangular positioning block 15. The end face of the fourth positioning pressure plate 1301 of the fourth positioning side plate assembly 13 is vertically pressed against the grenade hard guide frame I34, and its height exceeds the frame center height of the grenade hard guide frame I34. The fourth bolt 1303 passes through the long through hole in the center of the grenade hard guide frame I34 and is matched with the fourth nut 1302 to connect. The sixth positioning block 12, the seventh positioning block 14, and the third rectangular positioning block 15 are of the same height and flush with the upper edge of the contact surface between the grenade hard guide frame I34 and the bottom plate 1;

[0102] 3. Ensure that the grenade hard guide frame II33 is accurately positioned and firmly fixed vertically on the base plate 1:

[0103] Place the grenade hard guide frame II33 perpendicular to the bottom plate 1, insert it into the gap between the third positioning block 7 and the fifth positioning block 10, clamp it on both sides, and press the end face against the second square positioning block 11 vertically. The fourth positioning block 8 and the narrow side end face of the third positioning side plate 9 clamp the grenade hard guide frame II33 firmly. The fourth positioning block 8, the third positioning block 7 and the fifth positioning block 10 are consistent in shape and height, flush with the upper edge of the fitting surface of the grenade hard guide frame II33 and the bottom plate 1. The second positioning side plate 6 and the third positioning side plate 9 are consistent in shape and height, and their height exceeds the frame center height of the grenade hard guide frame II33 to ensure the verticality of the grenade hard guide frame II33.

[0104] 4. Install the chain slide and guide rod according to the positioning device. After ensuring that the components are welded and fixed, remove the grenade hard guide frame assembly:

[0105] The 6 processed L-shaped chain slides are passed through the grenade hard guide frame Ⅱ33, and the two ends are fixed at the bayonet positions of the grenade hard guide frame Ⅰ34 and the grenade hard guide frame Ⅲ32 respectively. The positions where the hard guide frame and the chain slide are fitted are fixed in sequence by welding, and the coaxiality and position consistency of the arc-shaped chain slide are ensured through three positionings: the longest L-shaped chain slide and the chain slide pass through the grenade hard guide frame Ⅱ33, and the tangent of the arc-shaped outer edge fits the notch position of the grenade hard guide frame Ⅱ33, the L-shaped chain slide openings face each other and downward, and the narrow edge presses against the radial inner side; the L-shaped chain slide and the chain slide opening close to the inner side face each other and upward, and the tangent of the arc-shaped inner edge fits the upper shoulders on both sides of the middle square frame of the grenade hard guide frame Ⅱ33; the shortest L-shaped chain slide and the chain slide opening face each other and upward, and the L-shaped chain slide just fits the lower end corners on both sides of the middle square frame of the grenade hard guide frame Ⅱ33;

[0106] The five processed cylindrical guide rods are respectively passed through the four arc corners reserved by the central square outline of the grenade hard guide frame Ⅱ33, and fixed to the four corresponding arc corners of the grenade hard guide frame Ⅰ34 and the grenade hard guide frame Ⅲ32. The circular end faces of the guide rod steps are flush with the planes of the grenade hard guide frame Ⅰ34 and the grenade hard guide frame Ⅲ32 in the bullet passing direction, and the contact surfaces of the guide rod and the grenade hard guide frame Ⅱ33 are fixedly welded;

[0107] 5. Ensure that the armor-piercing projectile hard guide frame III37 is accurately positioned and firmly fixed vertically on the base plate 1:

[0108] The armor-piercing hard guide frame III37 is perpendicular to the bottom plate 1, inserted into the gap between the eleventh positioning block 24 and the twelfth positioning block 25, and clamped on both sides. The end face is vertically pressed against the ninth square positioning block 22. The end face of the seventh positioning pressure plate 2301 of the seventh positioning side plate assembly 23 is vertically pressed against the armor-piercing hard guide frame III37, and its height exceeds the frame center height of the armor-piercing hard guide frame III37. The seventh bolt 2303 passes through the long through hole in the center of the armor-piercing hard guide frame III37 and is matched with the seventh nut 2302 to be connected. The height of the ninth square positioning block 22, the eleventh positioning block 24 and the twelfth positioning block 25 are flush with the horizontal inner surface of the armor-piercing hard guide frame III37.

[0109] 6. Ensure that the armor-piercing projectile hard guide frame I35 is accurately positioned and firmly fixed vertically on the base plate 1:

[0110] The armor-piercing hard guide frame I35 is perpendicular to the bottom plate 1, inserted into the gap between the sixth positioning block 12 and the seventh positioning block 14, and clamped on both sides. The end face is vertically pressed against the third rectangular positioning block 15. The end face of the fourth positioning pressure plate 1301 of the fourth positioning side plate assembly 13 is vertically pressed against the armor-piercing hard guide frame I35, and its height exceeds the frame center height of the armor-piercing hard guide frame I35. The fourth bolt 1303 passes through the long through hole at the center of the armor-piercing hard guide frame III37 and is connected with the fourth nut 1302. The sixth positioning block 12, the seventh positioning block 14, and the third rectangular positioning block 15 are of the same height and flush with the upper edge of the fitting surface of the armor-piercing hard guide frame I35 and the bottom plate 1.

[0111] 7. Ensure that the armor-piercing projectile hard guide frame II36 is accurately positioned and firmly fixed vertically on the base plate 1:

[0112] The armor-piercing hard guide frame II36 is perpendicular to the bottom plate 1, inserted into the gap between the eighth positioning block 17 and the tenth positioning block 20, and clamped on both sides. The end face is vertically pressed against the fourth square positioning block 16. The ninth positioning block 19 and the narrow side end face of the fifth positioning side plate 18 clamp the armor-piercing hard guide frame II36 firmly. The eighth positioning block 17, the ninth positioning block 19 and the tenth positioning block 20 are consistent in shape and height, flush with the upper edge of the fitting surface of the armor-piercing hard guide frame II36 and the bottom plate 1. The fifth positioning side plate 18 and the sixth positioning side plate 21 are consistent in shape and height, and their height exceeds the frame center height of the armor-piercing hard guide frame II36 to ensure the verticality of the armor-piercing hard guide frame II36.

[0113] 8. Install the chain slide and guide rod according to the positioning device. After ensuring that the components are welded and fixed, remove the armor-piercing hard guide frame assembly:

[0114] The 6 processed L-shaped chain slides are passed through the armor-piercing hard guide frame Ⅱ36 respectively, and the two ends are fixed at the bayonet positions of the armor-piercing hard guide frame Ⅰ35 and the armor-piercing hard guide frame Ⅲ37 respectively. The positions where the hard guide frame and the chain slides are fitted are fixed in sequence by welding. The coaxiality and position consistency of the arc-shaped chain slides are ensured through three positionings: the two chain slides near the outer edge and the middle are tangentially fitted with the notch position, and the ends are pressed against the inner side of the armor-piercing hard guide frame Ⅱ36; the two chain slides near the inner side, the L-shaped just fits the corners of the lower ends of the two sides of the armor-piercing hard guide frame Ⅱ36;

[0115] The five processed cylindrical guide rods are respectively passed through the four arc corners reserved in the central square contour of the armor-piercing hard guide frame Ⅱ36, and fixed at the corresponding four arc corners of the armor-piercing hard guide frame Ⅰ35 and the armor-piercing hard guide frame Ⅲ37. The circular end face of the guide rod step is flush with the plane of the armor-piercing hard guide frame Ⅰ35 and the armor-piercing hard guide frame Ⅲ37 in the projectile passing direction, and the contact surface between the guide rod and the armor-piercing hard guide frame Ⅱ36 is fixed and welded.

[0116] The device of the present invention is used for assembly and fixed welding, which solves the positioning problem of arc-shaped multi-components, ensures that the grenade guide and armor-piercing projectile guide are quickly positioned during welding, effectively prevents position deviation, ensures the coaxiality and dimensional consistency of the dual-path feed guide, and improves the welding efficiency and qualified rate of the feed guide combination. The method of positioning and assembling first and then processing is adopted to reduce the assembly error in the mass production process and greatly improve the assembly accuracy.

Claims

1. A positioning device for hard guide assembly welding of a dual-channel bidirectional ammunition feeding system, characterized in that: The invention comprises a bottom plate (1), a first positioning block (2), a second positioning block (3), a first positioning side plate assembly (4), a first square positioning block (5), a second positioning side plate (6), a third positioning block (7), a fourth positioning block (8), a third positioning side plate (9), a fifth positioning block (10), a second square positioning block (11), a sixth positioning block (12), a fourth positioning side plate assembly (13), a seventh positioning block (14), a third square positioning block (15), a fourth square positioning block (16), an eighth positioning block (17), a fifth positioning side plate (18), a ninth positioning block (19), a tenth positioning block (20), a sixth positioning side plate (21), a ninth square positioning block (22), a seventh positioning side plate assembly (23), an eleventh positioning block (24), and a twelfth positioning block (25); The bottom plate (1) is a main body for installing the positioning device. The first positioning block (2), the second positioning block (3), the first positioning side plate assembly (4), the first square positioning block (5), the second positioning side plate (6), the third positioning block (7), the fourth positioning block (8), the third positioning side plate (9), the fifth positioning block (10), the second square positioning block (11), the sixth positioning block (12), the fourth positioning side plate assembly (13), the seventh positioning block (14), the third square positioning block (15), the fourth square positioning block (16), the eighth positioning block (17), the fifth positioning side plate (18), the ninth positioning block (19), the tenth positioning block (20), the sixth positioning side plate (21), the ninth square positioning block (22), the seventh positioning side plate assembly (23), the eleventh positioning block (24), and the twelfth positioning block (25) are inserted into the card slot and fixed on the bottom plate (1).

2. The positioning device for hard guide assembly welding of a dual-path bidirectional ammunition feeding system as claimed in claim 1, characterized in that: The bottom plate (1) is provided with a first slot (101), a second slot (102), a third slot (103) and a fourth slot (104) along the direction of the grenade hard guide frame III (32) for guiding the grenade, and the first square positioning block (5), the first positioning side plate assembly (4), the first positioning block (2) and the second positioning block (3) are respectively installed thereon for fixing the grenade hard guide frame III (32); The bottom plate (1) is provided with a fifth slot (105), a sixth slot (106), a seventh slot (107), an eighth slot (108), a ninth slot (109) and a tenth slot (110) along the direction of the grenade hard guide frame II (33) for guiding the grenade, and is respectively provided with a second positioning side plate (6), a third positioning block (7), a fourth positioning block (8), a third positioning side plate (9), a fifth positioning block (10) and a second square positioning block (11) for fixing the grenade hard guide frame II (33); The bottom plate (1) is provided with an eleventh slot (111), a twelfth slot (112), a thirteenth slot (113) and a fourteenth slot (114) along the direction of the grenade hard guide frame I (34) for guiding the projectile, and is respectively provided with a third shaped positioning block (15), a fourth positioning side plate assembly (13), a seventh positioning block (14) and a sixth positioning block (12) for fixing the grenade hard guide frame I (34) and the armor-piercing projectile hard guide frame I (35); The bottom plate (1) is provided with a fifteenth slot (115), a sixteenth slot (116), a seventeenth slot (117), an eighteenth slot (118), a nineteenth slot (119) and a twentieth slot (120) along the direction of the armor-piercing projectile hard guide frame II (36) for guiding the projectile, and is respectively provided with a fourth square positioning block (16), an eighth positioning block (17), a fifth positioning side plate (18), a ninth positioning block (19), a tenth positioning block (20) and a sixth positioning side plate (21) for fixing the armor-piercing projectile hard guide frame II (36); The bottom plate (1) is provided with a twenty-first clamping groove (121), a twenty-second clamping groove (122), a twenty-third clamping groove (123) and a twenty-fourth clamping groove (124) along the direction of the armor-piercing projectile hard guide frame III (37), and a ninth square positioning block (22), an eleventh positioning block (24), a twelfth positioning block (25) and a seventh positioning side plate assembly (23) are respectively installed thereon for fixing the armor-piercing projectile hard guide frame III (37).

3. The positioning device for hard guide assembly welding of a dual-path bidirectional ammunition feeding system as claimed in claim 1 or 2, characterized in that: The card slots are all through slots, which are consistent with the size of the positioning blocks, cooperate with each other, and are correspondingly inserted.

4. The positioning device for hard guide assembly welding of a dual-path bidirectional ammunition feeding system as claimed in claim 1 or 2, characterized in that: The first positioning side plate assembly (4) is composed of a first positioning pressure plate (401), a first nut (402) and a first bolt (403); the first nut (402) is welded vertically on the end surface of the first positioning pressure plate (401) and cooperates with the first bolt (403); The fourth positioning side plate assembly (13) is composed of a fourth positioning pressure plate (1301), a fourth nut (1302) and a fourth bolt (1303); the fourth nut (1302) is welded vertically on the end surface of the fourth positioning pressure plate (1301) and cooperates with the fourth bolt (1303); The seventh positioning side plate assembly (23) is composed of a seventh positioning pressure plate (2301), a seventh nut (2302) and a seventh bolt (2303). The seventh nut (2302) is welded vertically on the end surface of the seventh positioning pressure plate (2301) and cooperates with the seventh bolt (2303).

5. The positioning device for hard guide assembly welding of dual-path bidirectional ammunition feeding system as claimed in claim 4, characterized in that: The first bolt (403), the fourth bolt (1303) and the seventh bolt (2303) are standard parts, and the model is GB / T5781-2000-M12×40; The first nut (402), the fourth nut (1302) and the seventh nut (2302) are standard parts, and the model is GB / T56-1988.

6. The positioning device for hard guide assembly welding of a dual-path bidirectional ammunition feeding system as claimed in claim 1 or 2, characterized in that: The narrow side end surface of the second positioning side plate (6) is in close contact with the inner surface of the third positioning block (7), and its end surface is flush with the long side end surface of the third positioning block (7); The narrow side end surface of the sixth positioning side plate (21) is in close contact with the inner surface of the tenth positioning block (20), and its end surface is flush with the long side end surface of the tenth positioning block (20).

7. The positioning device for hard guide assembly welding of a dual-path bidirectional ammunition feeding system as claimed in claim 1, characterized in that: The base plate (1) and all positioning blocks are made of high-quality carbon steel after quenching.

8. A dual-channel bidirectional ammunition feeding system hard guide assembly welding method, characterized in that: The hard conductor assembly is assembled and welded using the positioning device as claimed in any one of claims 1 to 7.

9. The hard guide assembly welding method for a dual-path bidirectional ammunition feeding system as claimed in claim 8, characterized in that: The positioning device installation steps include: Step 1-1, insert the first square positioning block (5) into the first slot (101), insert the first positioning side plate (401) of the first positioning side plate assembly (4) into the second slot (102), insert the first positioning block (2) and the second positioning block (3) into the rectangular third slot (103) and the fourth slot (104) respectively, the positioning block is flush with the bottom surface of the pressure plate, ensure that the four surfaces of each positioning block are tightly attached to the slot, and fix the upper plane of the bottom plate (1) and the contact surface of the positioning block by positioning welding; Step 1-2, insert the second positioning side plate (6) into the fifth slot (105), the third positioning block (7) into the sixth slot (106), the fourth positioning block (8) into the seventh slot (107), the third positioning side plate (9) into the eighth slot (108), the fifth positioning block (10) into the ninth slot (109), the second square positioning block (11) into the tenth slot (110), the positioning blocks are flush with the bottom surface of the pressure plate, ensure that the four surfaces of each positioning block are in close contact with the slot, and fix the upper plane of the bottom plate (1) and the positioning blocks by positioning welding; Step 1-3, insert the third shaped positioning block (15) into the eleventh slot (111), insert the fourth positioning side plate (1301) of the fourth positioning side plate assembly (13) into the twelfth slot (112), insert the seventh positioning block (14) into the thirteenth slot (113), insert the sixth positioning block (12) into the fourteenth slot (114), the positioning blocks are flush with the bottom surface of the pressure plate, ensure that the four surfaces of each positioning block are in close contact with the slot, and fix the upper plane of the bottom plate (1) and the positioning blocks by positioning welding; Step 1-4, insert the fourth square positioning block (16) into the fifteenth slot (115), the eighth positioning block (17) into the sixteenth slot (116), the fifth positioning side plate (18) into the seventeenth slot (117), the ninth positioning block (19) into the eighteenth slot (118), the tenth positioning block (20) into the nineteenth slot (119), and the sixth positioning side plate (21) into the twentieth slot (120), the positioning blocks are flush with the bottom surface of the pressure plate, ensure that the four surfaces of each positioning block are tightly attached to the slot, and fix the upper plane of the bottom plate (1) and the contact surface of the positioning blocks by positioning welding; Step 1-5, insert the ninth square positioning block (22) into the twenty-first slot (121), the eleventh positioning block (24) into the twenty-second slot (122), the twelfth positioning block (25) into the twenty-third slot (123), and the seventh positioning side plate (2301) of the seventh positioning side plate assembly (23) into the twenty-fourth slot (124). The positioning blocks are flush with the bottom surface of the pressure plate, ensuring that the four surfaces of each positioning block are in close contact with the slots, and the upper plane of the bottom plate (1) is fixed to the positioning blocks by positioning welding.

10. The hard guide assembly welding method for a dual-path bidirectional ammunition feeding system as claimed in claim 8, characterized in that: The hard guide assembly welding steps include: Step 2-1: Ensure that the grenade hard guide frame III (32) is positioned accurately and firmly fixed vertically on the base plate (1): The grenade hard guide frame III (32) is placed perpendicular to the bottom plate (1), inserted into the gap between the first positioning block (2) and the second positioning block (3), and clamped on both sides. The end face is vertically pressed against the first square positioning block (5). The end face of the first positioning pressure plate (401) of the first positioning side plate assembly (4) is vertically pressed against the grenade hard guide frame III (32), and its height exceeds the center height of the frame body of the grenade hard guide frame III (32). The first bolt (403) passes through the long through hole in the center of the grenade hard guide frame III (32) and is matched with the first nut (402) to be connected. The height of the first positioning block (2), the second positioning block (3) and the first square positioning block (5) are flush with the horizontal inner surface of the grenade hard guide frame III (32); Step 2-2: Ensure that the grenade hard guide frame I (34) is positioned accurately and firmly fixed vertically on the base plate (1): The grenade hard guide frame I (34) is perpendicular to the bottom plate (1), inserted into the gap between the sixth positioning block (12) and the seventh positioning block (14), and clamped on both sides. The end face is vertically pressed against the third rectangular positioning block (15). The end face of the fourth positioning pressure plate (1301) of the fourth positioning side plate assembly (13) is vertically pressed against the grenade hard guide frame I (34), and its height exceeds the frame center height of the grenade hard guide frame I (34). The fourth bolt (1303) passes through the long through hole in the center of the grenade hard guide frame I (34) and is connected with the fourth nut (1302). The sixth positioning block (12), the seventh positioning block (14) and the third rectangular positioning block (15) are of the same height and are flush with the upper edge of the contact surface between the grenade hard guide frame I (34) and the bottom plate (1); Step 2-3: Ensure that the grenade hard guide frame II (33) is positioned accurately and firmly fixed vertically on the base plate (1): The grenade hard guide frame II (33) is perpendicular to the bottom plate (1), inserted into the gap between the third positioning block (7) and the fifth positioning block (10), and clamped on both sides. The end face is vertically pressed against the second square positioning block (11). The fourth positioning block (8) and the narrow side end face of the third positioning side plate (9) clamp the grenade hard guide frame II (33) firmly. The fourth positioning block (8), the third positioning block (7) and the fifth positioning block (10) are all consistent in shape and height, and are flush with the upper edge of the contact surface between the grenade hard guide frame II (33) and the bottom plate (1). The second positioning side plate (6) and the third positioning side plate (9) are all consistent in shape and height, and their height exceeds the center height of the frame of the grenade hard guide frame II (33) to ensure the verticality of the grenade hard guide frame II (33); Step 2-4: Install the chain slide and guide rod according to the positioning device. After ensuring that the components are welded and fixed, remove the grenade hard guide frame assembly: The six processed L-shaped chain slides are passed through the grenade hard guide frame II (33), and the two ends are fixed at the bayonet positions of the grenade hard guide frame I (34) and the grenade hard guide frame III (32), and the positions where the hard guide frame and the chain slides are fitted are fixed in sequence by welding: the longest L-shaped chain slide and the chain slide pass through the grenade hard guide frame II (33), and the tangent direction of their arc-shaped outer edges fits with the notch position of the grenade hard guide frame II (33), the openings of the L-shaped chain slides face each other and face downward, and the narrow sides press against the radial inner side; the L-shaped chain slide and the chain slide openings close to the inner side face each other and face upward, and the tangent direction of their arc-shaped inner edges fits with the upper shoulders on both sides of the middle square frame of the grenade hard guide frame II (33); the shortest L-shaped chain slide and the chain slide opening face each other and face upward, and the L-shaped chain slide just fits against the lower end corners on both sides of the middle square frame of the grenade hard guide frame II (33); The five processed cylindrical guide rods are respectively passed through the four arc corners reserved in the central square contour of the grenade hard guide frame II (33) and fixed to the four corresponding arc corners of the grenade hard guide frame I (34) and the grenade hard guide frame III (32). The step circular end faces of the guide rods are flush with the planes of the grenade hard guide frame I (34) and the grenade hard guide frame III (32) in the bullet passing direction, and the contact surfaces of the guide rods and the grenade hard guide frame II (33) are fixedly welded; Step 2-5: Ensure that the armor-piercing projectile hard guide frame III (37) is positioned accurately and firmly fixed vertically on the base plate (1): The armor-piercing hard guide frame III (37) is perpendicular to the bottom plate (1), inserted into the gap between the eleventh positioning block (24) and the twelfth positioning block (25), and clamped on both sides. The end face is vertically pressed against the ninth square positioning block (22). The end face of the seventh positioning pressure plate (2301) of the seventh positioning side plate assembly (23) is vertically pressed against the armor-piercing hard guide frame III (37), and its height exceeds the frame center height of the armor-piercing hard guide frame III (37). The seventh bolt (2303) passes through the long through hole in the center of the armor-piercing hard guide frame III (37) and is connected with the seventh nut (2302). The height of the ninth square positioning block (22), the eleventh positioning block (24) and the twelfth positioning block (25) is flush with the horizontal inner surface of the armor-piercing hard guide frame III (37). Step 2-6: Ensure that the armor-piercing projectile hard guide frame I (35) is positioned accurately and firmly fixed vertically on the base plate (1): The armor-piercing hard guide frame I (35) is perpendicular to the bottom plate (1), inserted into the gap between the sixth positioning block (12) and the seventh positioning block (14), and clamped on both sides. The end face is vertically pressed against the third rectangular positioning block (15). The end face of the fourth positioning pressure plate (1301) of the fourth positioning side plate assembly (13) is vertically pressed against the armor-piercing hard guide frame I (35), and its height exceeds the frame center height of the armor-piercing hard guide frame I (35). The fourth bolt (1303) passes through the long through hole in the center of the armor-piercing hard guide frame III (37) and is connected with the fourth nut (1302). The sixth positioning block (12), the seventh positioning block (14) and the third rectangular positioning block (15) are of the same height and are flush with the upper edge of the fitting surface of the armor-piercing hard guide frame I (35) and the bottom plate (1). Step 2-7: Ensure that the armor-piercing projectile hard guide frame II (36) is positioned accurately and firmly fixed vertically on the base plate (1): The armor-piercing projectile hard guide frame II (36) is perpendicular to the bottom plate (1), inserted into the gap between the eighth positioning block (17) and the tenth positioning block (20), and clamped on both sides. The end face is vertically pressed against the fourth square positioning block (16). The ninth positioning block (19) and the narrow side end face of the fifth positioning side plate (18) clamp the armor-piercing projectile hard guide frame II (36) firmly. The eighth positioning block (17), the ninth positioning block (19) and the tenth positioning block (20) are all of the same shape and height, flush with the upper edge of the fitting surface of the armor-piercing projectile hard guide frame II (36) and the bottom plate (1). The fifth positioning side plate (18) and the sixth positioning side plate (21) are all of the same shape and height, and their height exceeds the frame center height of the armor-piercing projectile hard guide frame II (36) to ensure the verticality of the armor-piercing projectile hard guide frame II (36). Step 2-8: Install the chain slide and guide rod according to the positioning device. After ensuring that the components are welded and fixed, remove the armor-piercing hard guide frame assembly: The six processed L-shaped chain slides are respectively passed through the armor-piercing hard guide frame II (36), and the two ends are respectively fixed at the bayonet positions of the armor-piercing hard guide frame I (35) and the armor-piercing hard guide frame III (37), and the positions where the hard guide frame and the chain slides are fitted are fixed in sequence by welding: the two chain slides near the outer edge and the middle are tangentially fitted with the notch position, and the ends are pressed against the inner side of the armor-piercing hard guide frame II (36); the two chain slides near the inner side, the L-shaped chain slides just fit the corners of the lower ends of the two sides of the armor-piercing hard guide frame II (36); The five processed cylindrical guide rods are respectively passed through the four arc corners reserved in the central square contour of the armor-piercing hard guide frame II (36), and fixed at the corresponding four arc corners of the armor-piercing hard guide frame I (35) and the armor-piercing hard guide frame III (37). The circular end faces of the guide rod steps are flush with the planes of the armor-piercing hard guide frame I (35) and the armor-piercing hard guide frame III (37) in the projectile passing direction, and the contact surfaces of the guide rods and the armor-piercing hard guide frame II (36) are fixedly welded.

Images