CN112475196A - Assembling method of combined casing - Google Patents

Assembling method of combined casing Download PDF

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Publication number
CN112475196A
CN112475196A CN202011369928.9A CN202011369928A CN112475196A CN 112475196 A CN112475196 A CN 112475196A CN 202011369928 A CN202011369928 A CN 202011369928A CN 112475196 A CN112475196 A CN 112475196A
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CN
China
Prior art keywords
casing
side plate
positioning
assembly
rivet
Prior art date
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Granted
Application number
CN202011369928.9A
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Chinese (zh)
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CN112475196B (en
Inventor
丁诗英
向东
侯冬冬
邱锋
胡瑜畔
李天旻
顾鹏
余涛
徐辉
林开平
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Chongqing Jianshe Industry Group Co Ltd
Original Assignee
SICHUAN HUAQING MACHINERY CO Ltd
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Priority to CN202011369928.9A priority Critical patent/CN112475196B/en
Publication of CN112475196A publication Critical patent/CN112475196A/en
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Publication of CN112475196B publication Critical patent/CN112475196B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
    • B21J15/42—Special clamping devices for workpieces to be riveted together, e.g. operating through the rivet holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A35/00—Accessories or details not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)

Abstract

The application relates to the technical field of firearm assembly, and discloses an assembly method of a combined type receiver, which ensures the assembly quality of the receiver and the performance of a formed product by improving the assembly method of the combined type receiver, and finally improves the precision and the reliability of the firearm in shooting.

Description

Assembling method of combined casing
Technical Field
The application relates to the technical field of firearm assembly, in particular to an assembly method of a combined type receiver.
Background
The casing is the basic component of the automatic weapon, and the main function of the casing is to combine all other components and parts together to form a whole. The movable machine body is guided to move in work and is matched with related mechanisms to complete actions of unlocking, locking, feeding, shell ejection and the like. The quality of the receiver will directly affect the reliability of the automatic weapon operation. The punching and riveting processing technology has the advantages that the processing of parts can be simplified, the punching and riveting processing technology is suitable for mass production, and the production and material cost can be effectively reduced. However, the structure of the receiver is complex, the size is large, and the requirement for the precision of the mutual positions is high, so that the manufacturing process of the receiver is complex, and the mutual position and the size of each part of the receiver are difficult to be ensured during assembly, so that the precision and the reliability of the finally assembled and formed receiver during shooting of firearms can be affected during use.
Disclosure of Invention
In view of the above problems and deficiencies in the prior art, the present application provides a method for assembling a modular receiver having stable quality and reliable performance.
In order to achieve the above object, the technical solution of the present application is as follows:
the assembling method of the combined casing specifically comprises the following steps:
firstly, placing a left side plate and a right side plate of a casing on two sides of a positioning block, respectively clamping a tailstock clamping groove on the left side plate and the right side plate of the casing on a positioning boss of a first positioning block, then sequentially covering an upper cover of the casing above the left side plate and the right side plate of the casing, covering a lower seat of the casing below the left side plate and the right side plate of the casing, enabling the left side plate, the right side plate, the upper cover and the lower seat of the casing to form a whole assembly, then respectively sleeving two positioning clamping hoops on the assembly, sequentially screwing clamping screws on the two positioning clamping hoops, then installing the positioning plate on the rear side of the assembly, screwing corresponding clamping screws to position the upper cover and the lower cover of the casing, and finally ensuring that the left side plate, the right side plate, the upper cover and the lower seat of the casing are tightly attached to the first positioning block;
step two, horizontally placing the components clamped in the step one on a bed surface of a drilling machine, performing matched drilling on rivet holes on the left side and the right side of an upper cover of the casing and rivet holes on the left side and the right side of a lower seat of the casing, loosening after the matched drilling is finished, taking down a front positioning clamping hoop and a rear positioning clamping hoop, completely decomposing a left side plate of the casing, a right side plate of the casing, the upper cover of the casing and the lower seat of the casing, placing all the components in a set, and chamfering an orifice of the matched drilling;
thirdly, riveting the right side plate of the casing and the upper cover of the casing after a rivet of the upper cover of the casing is penetrated;
fourthly, after the riveting of the right side plate of the casing and the upper cover of the casing is completed, placing the buffer seat in a clamping groove of the upper cover of the casing, drilling a rivet hole of the buffer seat and the right side plate of the casing, threading a buffer seat rivet for riveting after the drilling is completed, and threading a seat rivet into the rivet hole of the upper cover of the casing and the buffer seat after the riveting of the buffer seat rivet is firm, so that the riveting of the buffer seat and the upper cover of the casing is firm;
fifthly, after the buffer base is firmly riveted with the upper cover of the casing, the matched and drilled left side plate of the casing is matched with the upper cover of the casing, a rivet of the upper cover of the casing penetrates into a rivet hole matched and drilled in the left side plate of the casing and the upper cover of the casing, and the upper cover of the casing is firmly riveted with the left side plate of the casing;
step six, penetrating the components riveted in the step five and the lever seat into a seat rivet so as to enable the lever seat to be firmly riveted with the upper cover of the casing;
seventhly, matching the lower casing seat with the components in the sixth step, wherein rivets of the lower casing seat penetrate through rivet holes in the left side and the right side of the lower casing seat, and the left casing side plate, the right casing side plate and the lower casing seat are firmly riveted by using special tools;
eighthly, fixing the position of the riveted assembly in the step seven and the sleeve assembly by using a second positioning block, a shaping mandrel, a positioning key, a left wedge block and a right wedge block, fixing the riveted assembly in the step seven and the sleeve assembly into a whole by using a positioning clamping hoop and a clamping screw rod, and then placing the whole on a heightening base to ensure that the combined casing is parallel to the surface of a machine tool;
and ninthly, drilling a joint sleeve assembly, and a casing joint sleeve short rivet hole and a casing joint sleeve long rivet hole on a left side plate and a right side plate of the casing, threading the casing joint sleeve short rivet and the casing joint sleeve long rivet on the left side and the right side of the drilled whole, then firmly riveting the joint sleeve assembly and the riveted assembly obtained in the step seven, and finally detaching the left wedge block, the right wedge block, the positioning key, the shaping mandrel and the second positioning block.
Preferably, the casing upper cover, the casing lower seat, the casing left side plate, the casing right side plate, the buffer seat and the lever seat are all provided with reserved holes. When the machine box is assembled and processed, the preformed hole of each part is drilled to the diameter of the rivet.
Preferably, a clamping groove is formed in the inner side of the upper cover of the casing, a boss matched with the clamping groove is arranged on the buffer seat, and the boss is axially fixed in the clamping groove.
Preferably, during the assembly in the eighth step, the second positioning block is placed into the assembly from the rear of the assembly, the positioning groove on the second positioning block is just aligned with the positioning groove on the casing lower cover, and the positioning key penetrates into the positioning grooves on the casing lower cover and the joint sleeve positioning block respectively.
Preferably, during the assembly in the eighth step, the setting mandrel penetrates through the barrel hole of the socket assembly and is further inserted into the positioning hole in the second positioning block, the fit clearance between the setting mandrel and the barrel hole is not more than 0.05mm, and the setting mandrel can freely rotate after being inserted into the positioning hole.
Preferably, during the eighth assembly, the left wedge and the right wedge are symmetrically wedged into the second positioning block from the rear of the assembly
The beneficial effect of this application:
the application ensures the assembling quality of the combined type receiver and the performance of the formed product, and finally improves the precision and the reliability of firearms when shooting.
Drawings
The foregoing and following detailed description of the present application will become more apparent when read in conjunction with the following drawings, wherein:
FIG. 1 is a schematic view of a completed structure of an assembled casing according to the present application;
FIG. 2 is a schematic view of the components of the combined casing according to the present application;
FIG. 3 is a schematic diagram of step one of the present application;
FIG. 4 is a schematic diagram of step two of the present application;
FIG. 5 is a schematic diagram of step three of the present application;
FIG. 6 is a schematic diagram of step four of the present application;
FIG. 7 is a schematic diagram of step five of the present application;
FIG. 8 is a schematic diagram of step six of the present invention;
FIG. 9 is a schematic diagram of step seven in the present application;
FIG. 10 is a schematic diagram of step eight of the present application;
FIG. 11 is a schematic diagram of step nine of the present application;
FIG. 12 is a positioning schematic diagram of step one and step two in the present application;
fig. 13 is a positioning schematic diagram of step eight in the present application.
In the figure:
1. an upper cover of the casing; 2. a buffer seat; 3. a seat rivet; 4. a cushion seat rivet; 5. a right side plate of the casing; 6. an adapter assembly; 7. a lever base; 8. a rivet is arranged on the upper cover of the casing; 9. a left side plate of the casing; 10. a lower seat rivet of the casing; 11. a lower seat of the casing; 12. the casing is sleeved with a short rivet; 13. the casing joint is sleeved with a long rivet; 14. clamping the screw rod; 15. positioning and clamping a hoop; 16. a first positioning block; 17. positioning a plate; 20. a left wedge block; 21. a right wedge block; 23. a positioning key; 24. a gasket; 26. a second positioning block; 27. heightening the base; 28. and (5) shaping the mandrel.
Detailed Description
The technical solutions for achieving the objects of the present invention are further described below by using several specific examples, and it should be noted that the technical solutions claimed in the present application include, but are not limited to, the following examples.
Example 1
The embodiment discloses an assembling method of a combined casing, which is shown in the attached drawings 1-13 in the specification, and the assembling method specifically comprises the following steps:
firstly, placing a left side plate 9 and a right side plate 5 of a casing on two sides of a first positioning block 16, respectively clamping a tailstock clamping groove on the left side plate 9 and the right side plate 5 of the casing on a positioning boss of the first positioning block 16, then sequentially covering an upper casing cover 1 on the left side plate 9 and the right side plate 5 of the casing, covering a lower casing base 11 below the left side plate 9 and the right side plate 5 of the casing, so that the left side plate 9, the right side plate 5 of the casing, the upper casing cover 1 and the lower casing base 11 form a whole assembly, respectively sleeving two positioning and clamping hoops 15 on the assembly, sequentially screwing clamping screw rods 14 on the two positioning and clamping hoops 15, then installing the positioning plate 17 on the rear side of the assembly, screwing the corresponding clamping screw rods 14, and positioning the upper casing cover 1 and the lower casing base 11, and finally ensuring that the left side plate 9, the right side plate 5 of the casing, and the casing, The upper cover 1 and the lower base 11 of the casing are tightly attached to the first positioning block 16;
step two, horizontally placing the components clamped in the step one on a bed surface of a drilling machine, and performing matched drilling on rivet holes on the left side and the right side of the upper cover 1 of the casing and rivet holes on the left side and the right side of the lower seat 11 of the casing;
step three, loosening and taking down the front positioning clamping hoop 15 and the rear positioning clamping hoop 15 after the matched drilling is finished, then completely decomposing the left side plate 9 of the casing, the right side plate 5 of the casing, the upper cover 1 of the casing and the lower base 11 of the casing, putting all the components in a set, chamfering the hole opening of the matched drilling, and finally riveting the right side plate 5 of the casing and the upper cover 1 of the casing after the upper cover rivet 8 of the casing is penetrated;
fourthly, after the right side plate 5 of the casing is riveted with the upper cover 1 of the casing, placing the buffer base 2 in a clamping groove of the upper cover 1 of the casing, drilling a rivet hole of the buffer base 2 and the right side plate 5 of the casing, threading the buffer base rivet 4 for riveting after the drilling is finished, and after the buffer base rivet 4 is firmly riveted, threading the seat type rivet 3 into the rivet hole of the upper cover 1 of the casing and the buffer base 2, and firmly riveting the buffer base 2 and the upper cover 1 of the casing;
fifthly, after the buffer base 2 is firmly riveted with the upper casing cover 1, the drilled left casing side plate 9 is matched with the upper casing cover 1, and a casing upper cover rivet 8 penetrates into a rivet hole drilled in the left casing side plate 9 and the upper casing cover 1, so that the upper casing cover 1 is firmly riveted with the left casing side plate 9;
step six, penetrating the components riveted in the step five and the lever seat 7 into the seat rivet 3 so as to enable the lever seat 7 to be firmly riveted with the casing upper cover 1;
seventhly, matching the lower casing seat 11 with the components in the sixth step, wherein the rivets 10 of the lower casing seat penetrate through rivet holes in the left side and the right side of the lower casing seat 11, and the left casing side plate 5, the right casing side plate 9 and the lower casing seat 11 are firmly riveted by using a special tool;
eighthly, fixing the position of the assembly riveted in the step seven and the sleeve assembly 6 by using a second positioning block 26, a shaping mandrel 28, a positioning key 23, a left wedge 20 and a right wedge 21, fixing the assembly riveted in the step seven and the sleeve assembly 6 into a whole by using a positioning clamping hoop 15 and a clamping screw 14, and then placing the whole on a heightening base 27 to ensure that the combined case is parallel to the surface of the machine tool;
and ninthly, drilling a joint sleeve assembly 6, a casing joint sleeve short rivet hole and a casing joint sleeve long rivet hole on a casing left side plate 5 and a casing right side plate 9, threading a casing joint sleeve short rivet 12 and a casing joint sleeve long rivet 13 on the left side and the right side of the drilled whole, then firmly riveting the joint sleeve assembly 6 and the riveted assembly obtained in the seventh step, and finally detaching the left wedge block 20, the right wedge block 21, the positioning key 23, the shaping mandrel 28 and the second positioning block 26.
In this application, the positioning clamp 15 all uses the casing left side plate 5 and the casing right side plate 9 as a reference, and can ensure that the casing left side plate 5 and the casing right side plate 9 on the combined assembly can be parallel to the bed surface of the drilling machine during drilling, and the axis of drilling is perpendicular to the casing left side plate 5 and the casing right side plate 9.
In the present application, the riveting between the parts may be manual riveting or mechanical riveting.
Example 2
In this embodiment, referring to fig. 1 to 13 of the specification, on the basis of embodiment 1, the casing upper cover 1, the casing lower seat 11, the casing left side plate 5, the casing right side plate 9, the buffer seat 2, and the lever seat 7 are all provided with a reserved hole. When the case is assembled and machined, only the preformed holes of all the parts need to be drilled to the diameter of the rivet, so that the rivet can pass through smoothly, but the displacement among all the parts is small.
Furthermore, a clamping groove is formed in the inner side of the casing upper cover 1, a boss matched with the clamping groove is arranged on the buffer seat 2, and the boss is axially fixed in the clamping groove.
Further, during the assembly in the eighth step, the second positioning block 26 is placed into the assembly from the rear of the assembly, and the positioning groove on the second positioning block is just aligned with the positioning groove on the casing lower cover 11, and the positioning key 23 penetrates into the positioning grooves on the casing lower cover 11 and the joint sleeve positioning block 26, respectively.
Further, during the assembly in the eighth step, the setting mandrel 28 is inserted into the barrel hole of the sleeve assembly 6 and further inserted into the positioning hole of the second positioning block 26, and the matching gap between the setting mandrel 28 and the barrel hole is not more than 0.05mm and the setting mandrel 28 can rotate freely after being inserted into the positioning hole.
Further, when the step eight is assembled, the left wedge 20 and the right wedge 21 are symmetrically wedged into the second positioning block 26 from the rear of the assembly.
The basic principle of the application is as follows:
before riveting, the first locating block 16, the locating plate 17 and the two locating clampers 15 are used for combining the upper casing cover 1, the lower casing base 11, the right casing side plate 9 and the left machine side plate 5 related to the movement of the firearm together, and determining the relative position relationship among the parts. After each part is positioned and clamped by the two positioning clamp hoops 15 and placed on the bed surface of a machine tool, corresponding rivet holes are drilled between the upper cover 1 of the machine case and the right side plate 9 and the left side plate 5 of the machine case, the hole diameter ensures that the rivet 8 of the mechanical upper cover can smoothly pass through, the gap between the hole diameter and the rivet holes is not more than 0.05mm, then the rivet holes between the lower seat 11 of the machine case and the right side plate 9 of the machine case and the left side plate 5 of the machine case are arranged on the bed surface of the machine tool, the same is true, the hole diameter ensures that the rivet 10 of the lower seat of the machine case can smoothly pass through, and the gap between the hole diameter and the rivet holes can not exceed 0.
The four positioning surfaces of the first positioning block 16 are perpendicular to each other, a positioning boss is arranged at the rear end of the positioning block, a clamping groove for assembling a gun tail is formed in the left side plate 9 of the casing and the right side plate 5 of the casing, the clamping groove in the left side plate 9 of the casing and the clamping groove in the right side plate 5 of the casing are just clamped into the positioning boss during assembly, it can be guaranteed that the left side plate 9 of the casing, the right side plate 5 of the casing, the upper cover 1 of the casing and the lower seat 11 of the casing after drilling form a regular cube, the upper cover 1 of the casing and the lower seat 11 of the casing are flush with the positioning block 16, positioning is carried out by the positioning plate 18, and it is guaranteed that the gun tail can be smoothly clamped into the gun tail groove in the left side plate 9.
Before the sleeve assembly 6 is riveted with the assembly riveted in the seventh step, the assembly riveted in the seventh step and the sleeve assembly 6 are combined together by a second positioning block 26, a shaping mandrel 28, a positioning key 23, a positioning clamp 15, a gasket 24 and a clamping screw 14, the relative position relation between the assemblies is determined, the assembly is positioned and clamped by the positioning clamp 15, the gasket 24 and the clamping screw 14 and then placed on a heightening base 27 to ensure that the whole assembly is parallel to the bed surface of a machine tool, rivet holes between the sleeve assembly 6 and a left side plate 9 and a right side plate 5 of the machine case are drilled, the hole diameter ensures that a short rivet 12 of the sleeve of the machine case and a long rivet 13 of the sleeve of the machine case can smoothly pass through the rivet holes, and the gap between the hole diameter and the rivet is not more than 0.05 mm.
During assembly, the shaping mandrel 28 penetrates through a barrel hole of the sleeve assembly 6, the fit clearance with the barrel hole is not more than 0.05mm, the shaping mandrel 28 is further inserted into a positioning hole of a second positioning block 26, the second positioning block 26 is installed in the assembly riveted in the seventh step, the lower plane of the second positioning block 26 is tightly attached to the inner plane of the lower cartridge receiver 11, a positioning key 23 penetrates through a positioning groove of the lower cartridge receiver 11 and a positioning groove of the second positioning block 26, the left wedge block 20 and the right wedge block 21 are symmetrically wedged into the second positioning block 26, the barrel axis of the second positioning block 26 is ensured to be parallel to the left cartridge receiver side plate 9 and the right cartridge receiver side plate 5, the second positioning block 26 is tensioned in the assembly riveted in the seventh step by using the clamping screw 14, and the front plane of the sleeve assembly 6 and the second positioning block 26 is tightly attached. The assembly can ensure that the axis of the barrel of the sleeve assembly 6 is parallel to the inner surface of the lower seat 11 of the casing and is parallel to the inner surfaces of the left side plate 9 and the right side plate 5 of the casing.
The shaping mandrel 28 can rotate freely after being inserted into the positioning hole on the positioning block 26, but the axis of the shaping mandrel 28 is consistent with that of the positioning hole of the positioning block 26, a square cavity (namely a positioning groove) is arranged on the positioning block 26 and can be inserted into the positioning key 23, and the positioning key 23 is vertical to the lower plane of the positioning block 26.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The foregoing is directed to embodiments of the present invention, which are not limited thereto, and any simple modifications and equivalents thereof according to the technical spirit of the present invention may be made within the scope of the present invention.

Claims (6)

1. The assembling method of the combined type casing is characterized by comprising the following steps: the method specifically comprises the following steps:
firstly, a left side plate (9) and a right side plate (5) of a casing are placed on two sides of a first positioning block (16), a gun tail clamping groove on the left side plate (9) and the right side plate (5) of the casing is respectively clamped on a positioning boss of the first positioning block (16), then an upper casing cover (1) is sequentially covered above the left side plate (9) and the right side plate (5) of the casing, a lower casing base (11) is covered below the left side plate (9) and the right side plate (5) of the casing, so that the left side plate (9), the right side plate (5) of the casing, the upper casing cover (1) and the lower casing base (11) form an integral assembly, then two positioning clamping hoops (15) are respectively sleeved on the assembly, clamping screw rods (14) on the two positioning clamping hoops (15) are sequentially screwed, then a positioning plate (17) is installed on the rear side of the assembly, and corresponding clamping screw rods (14) are screwed, so that the upper casing cover (1) and the lower casing cover (11) are positioned, finally, the left side plate (9) of the casing, the right side plate (5) of the casing, the upper cover (1) of the casing and the lower seat (11) of the casing are tightly attached to the first positioning block (16);
step two, horizontally placing the components clamped in the step one on a bed surface of a drilling machine, performing matched drilling on rivet holes on the left side and the right side of an upper cover (1) of the casing and rivet holes on the left side and the right side of a lower seat (11) of the casing, loosening after the matched drilling is completed, taking down a front positioning clamping hoop and a rear positioning clamping hoop (15), completely decomposing a left side plate (9) of the casing, a right side plate (5) of the casing, the upper cover (1) of the casing and the lower seat (11) of the casing, putting all the components in a set, and chamfering an orifice of the matched drilling;
thirdly, riveting the right side plate (5) of the casing and the upper cover (1) of the casing after a rivet (8) of the upper cover of the casing is penetrated;
fourthly, after the right side plate (5) of the casing is riveted with the upper cover (1) of the casing, placing the buffer seat (2) in a clamping groove of the upper cover (1) of the casing, drilling a rivet hole between the buffer seat (2) and the right side plate (5) of the casing, threading a buffer seat rivet (4) for riveting after drilling, and after the buffer seat rivet (4) is firmly riveted, threading a seat type rivet (3) through the rivet hole between the upper cover (1) of the casing and the buffer seat (2), and firmly riveting the buffer seat (2) and the upper cover (1) of the casing;
fifthly, after the buffer seat (2) is firmly riveted, matching the drilled left side plate (9) of the casing with the upper cover (1) of the casing, and enabling a rivet (8) of the upper cover of the casing to penetrate into a rivet hole drilled in the left side plate (9) of the casing and the upper cover (1) of the casing, so that the upper cover (1) of the casing and the left side plate (9) of the casing are firmly riveted;
step six, penetrating the lever seat (7) and the assembly riveted in the step five into the seat rivet (3) so as to enable the lever seat (7) and the casing upper cover (1) to be firmly riveted;
seventhly, matching the lower casing seat (11) with the components in the sixth step, wherein rivets (10) of the lower casing seat penetrate through rivet holes in the left side and the right side of the lower casing seat (11), and a left casing side plate (5), a right casing side plate (9) and the lower casing seat (11) are firmly riveted by using a special tool;
eighthly, fixing the riveted assembly in the step seven and the sleeve assembly (6) in position by using a second positioning block (26), a shaping mandrel (28), a positioning key (23), a left wedge block (20) and a right wedge block (21), fixing the riveted assembly in the step seven and the sleeve assembly (6) into a whole by using a positioning clamping hoop (15) and a clamping screw (14), and then placing the whole on a heightening base (27) to ensure that the combined machine box is parallel to the surface of a machine tool;
and ninthly, drilling a casing joint sleeve short rivet hole and a casing joint sleeve long rivet hole on a casing joint sleeve assembly (6), a casing left side plate (5) and a casing right side plate (9), threading a casing joint sleeve short rivet (12) and a casing joint sleeve long rivet (13) on the left side and the right side of the drilled whole, firmly riveting the joint sleeve assembly (6) and the riveted assembly obtained in the seventh step, and finally detaching the left wedge block (20), the right wedge block (21), the positioning key (23), the shaping mandrel (28) and the second positioning block (26).
2. The method of assembling a composite case according to claim 1, wherein: the upper casing cover (1), the lower casing base (11), the left casing side plate (5), the right casing side plate (9), the buffer base (2) and the lever base (7) are all provided with reserved holes.
3. The method of assembling a composite case according to claim 1, wherein: the inner side of the casing upper cover (1) is provided with a clamping groove, the buffer seat (2) is provided with a boss matched with the clamping groove, and the boss is axially fixed in the clamping groove.
4. The method of assembling a composite case according to claim 1, wherein: during the assembly in the step eight, the second positioning block (26) is placed into the assembly from the rear of the assembly, the positioning groove in the second positioning block (26) is just aligned with the positioning groove in the casing lower cover (11), and the positioning key (23) penetrates into the positioning grooves in the casing lower cover (11) and the second positioning block (26) respectively.
5. The method of assembling a composite case according to claim 1, wherein: during the assembly in the step eight, the shaping mandrel (28) penetrates through the gun barrel hole of the joint sleeve assembly (6) and is further inserted into the positioning hole in the second positioning block (26), the fit clearance between the shaping mandrel (28) and the gun barrel hole is not more than 0.05mm, and the shaping mandrel can freely rotate after being inserted into the positioning hole.
6. The method of assembling a composite case according to claim 1, wherein: when the step eight is assembled, the left wedge block (20) and the right wedge block (21) are symmetrically wedged into the second positioning block (26) from the rear of the assembly.
CN202011369928.9A 2020-11-30 2020-11-30 Assembling method of combined casing Active CN112475196B (en)

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