A bolt assembly tool and method

Abstract

The application discloses a bolt carrier assembly tool and assembly method, which greatly improves the bolt carrier assembly efficiency. The tool base is provided with a vertical plate at one end, and a screw rod base is fixed at the other end. A screw rod, a connecting ring, a push rod sliding block and a positioning sliding block are sequentially arranged between the screw rod base and the vertical plate. The screw rod is matched with the screw rod base. The push rod sliding block and the positioning sliding block are slidingly matched on the tool base. The push rod sliding block is provided with a U-shaped push rod connecting block at one end adjacent to the screw rod. The push rod connecting block is provided with a through hole on the bottom plate. The inner end of the screw rod passes through the through hole on the push rod connecting block and is fixed with the connecting ring. The push rod sliding block is provided with a circular table. The positioning sliding block is provided with a positioning circular hole. The end surface of the circular table is provided with a push rod. The position of the push rod is corresponding to a case ejecting lug on the bolt carrier body. The push rod of the push rod sliding block is used for applying pressure to the stress surface of the case ejecting lug, so that the case ejecting lug spring is compressed to the position, and then the case ejecting lug is assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of firearms, and in particular to a bolt component assembly tool and an assembly method. Background Art

[0002] The classic M14 automatic rifle has many problems in production. Since it uses an elastic ejection mechanism, its uniquely shaped extractor and ejector are very difficult to assemble. Therefore, a set of assembly tools is urgently needed to assist assembly workers in the assembly work.

[0003] Therefore, the present invention provides a bolt component assembly tool and assembly method, which is applicable to the M14 automatic rifle and its derivative models, and is applicable to the shell extraction and ejection mechanism of the same structure, and can all be assembled using this tool form. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a bolt component assembly tool and an assembly method, which greatly improves the assembly efficiency of the bolt component.

[0005] The object of the present invention is achieved like this:

[0006] A bolt assembly tool comprises a tool base, one end of the tool base is provided with a vertical plate, the other end of the tool base is fixed with a screw seat, a screw, a connecting ring, a push rod slider, and a positioning slider are sequentially arranged between the screw seat and the vertical plate, the screw cooperates with the screw seat to form a screw nut mechanism, a pressure handle is provided at the outer end of the screw, the push rod slider and the positioning slider are slidably fitted on the tool base and can slide longitudinally along the tool base, the positioning slider and the vertical plate are between the mounting space of the bolt body, and the end of the push rod slider adjacent to the screw is provided with a U-shaped push rod connection Block, a through hole is provided on the bottom plate of the push rod connecting block, the inner end of the screw rod passes through the through hole on the push rod connecting block and fixes the connecting ring, the connecting ring limits the axial position of the screw rod and enables the screw rod to rotate relative to the push rod slider, the push rod slider is provided with a round table, the positioning slider is provided with a positioning circular hole, the round table is located in the positioning circular hole and forms a sliding fit, a push rod is provided on the end surface of the round table, the position of the push rod corresponds to the ejector on the gun body, the push rod of the push rod slider is used to apply pressure to the force-bearing surface of the ejector, thereby compressing the ejector spring into place, and then installing the shell hook.

[0007] Preferably, the bolt component is a component of an M14 automatic rifle or a derivative model thereof.

[0008] Preferably, a dovetail guide rail is provided on the tool base, and dovetail grooves are provided on the positioning slider and the push rod slider, and respectively cooperate with the dovetail guide rail.

[0009] Preferably, the connecting ring is fixedly connected to the inner end of the screw rod via a radial pin.

[0010] Preferably, the vertical plate and the positioning slide block are respectively provided with a gun body positioning hole, and the gun body positioning hole is provided with a clearance notch, the clearance notch positions the gun body circumferentially, and the step surfaces at both ends of the gun body are axially positioned on the vertical plate and the positioning slide block.

[0011] Preferably, a mounting plate is provided upright on one side of the tool base, and a clamping handle mounting hole is provided on the mounting plate. A clamping screw is threadedly fitted on the clamping handle mounting hole, the outer end of the clamping screw is connected to the clamping handle, and the inner end of the clamping screw is used to clamp and fix the gun body.

[0012] An assembly method based on a bolt assembly tool. When assembling the bolt components, the ejector, ejector spring, and firing pin are first installed into the bolt body. The bolt body is then placed on a tool base plate and a positioning slide. The positioning slide is then slid to position the bolt body. The bolt body is then radially compressed using a clamping handle.

[0013] Rotate the screw rod clockwise, the screw rod drives the push rod slider to move forward, the push rod pushes the ejector, the ejector compresses the ejector spring into place, install all the parts on the bolt assembly, then rotate the screw rod counterclockwise to drive the push rod slider to move backward, releasing the ejector spring force.

[0014] Then move the positioning slider backward, release the clamping handle, and remove the bolt. At this time, the bolt parts are assembled.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0016] This invention overcomes the difficulty in assembling the extractor and ejector during mass production of existing M14 automatic rifles and their derivatives. During assembly, the bolt body is securely positioned on the tool base, the rotary motion of the screw rod is converted into linear motion of the push rod slider to overcome the ejector spring force, and the ejector is pressed into a specific assembly position before the extractor is installed, significantly reducing assembly effort. Consequently, the use of this assembly tool completely resolves the difficulty in assembling bolt components for M14 automatic rifles, significantly improving bolt component assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an installation diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the tool base structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the bolt structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the ejector spring structure of the present invention;

[0021] Figure 5 Schematic diagram of the ejector in the present invention;

[0022] Figure 6 It is a schematic diagram of the positioning slider structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the push rod and slider structure of the present invention;

[0024] Figure 8 It is a schematic diagram of the connecting ring structure in the present invention;

[0025] Figure 9 This is a schematic structural diagram of the push rod connecting block in the present invention;

[0026] Figure 10 It is a schematic diagram of the screw rod structure in the present invention;

[0027] Figure 11 This is a schematic structural diagram of the screw rod seat in the present invention;

[0028] Figure 12 This is a schematic diagram of the shell puller structure of the present invention;

[0029] Figure 13 This is a schematic diagram of the structure of the ejector in the present invention, showing the position where the ejector is recessed into the bolt body (the ejector must be pressed to this position before the extractor can be installed);

[0030] Figure 14 It is a three-dimensional schematic diagram of the present invention.

[0031] Figure 15 This is a cross-sectional diagram of the bolt components (showing the extractor assembly);

[0032] Figure 16 This is a schematic diagram of the ejector being recessed into the bolt and then assembled with the extractor.

[0033] Reference numerals

[0034] In the accompanying drawings, 1 is the tool base, 2 is the bolt body, 3 is the ejector spring, 4 is the ejector, 5 is the positioning slide, 6 is the push rod slide, 7 is the connecting ring, 8 is the screw, 9 is the screw seat, 10 is the shell extractor, and 11 is the clamping handle; 101 and 501 are the bolt body positioning holes, 102 is the clamping handle mounting hole, 103 is the dovetail guide rail, and 104 is the screw seat mounting hole; 201 is the ejector and ejector spring mounting holes, and 202 is the shell extractor mounting hole; 401 is the force surface; 502 and 603 are dovetail slides; 601 is the push rod, and 602 is the push rod connecting block mounting hole; 801 is the connecting ring mounting hole, and 802 is the screw thread; 901 is the screw mounting hole, and 902 is the screw mounting hole; 1001 is the shell extractor mounting cylindrical surface. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0036] See also Figures 1 to 14 A bolt assembly tool includes a tool base 1, one end of the tool base 1 is provided with a vertical plate, the other end of the tool base 1 is fixed with a screw seat 9, a screw rod 8, a connecting ring 7, a push rod slider 6, and a positioning slider 5 are sequentially arranged between the screw rod seat 9 and the vertical plate, the screw rod 8 cooperates with the screw rod seat 9 to form a screw nut mechanism, a pressure handle is provided at the outer end of the screw rod 8, the push rod slider 6 and the positioning slider 5 are slidably fitted on the tool base 1 and can slide longitudinally along the tool base 1, the positioning slider 5 and the vertical plate are used as the installation space for the bolt body 2, and the end of the push rod slider 6 adjacent to the screw rod 8 is provided with a U-shaped push rod connecting block. , a through hole is provided on the bottom plate of the push rod connecting block, the inner end of the screw rod 8 passes through the through hole on the push rod connecting block and fixes the connecting ring 7, the connecting ring 7 limits the axial position of the screw rod 8 and enables the screw rod 8 to rotate relative to the push rod slider 6, the push rod slider 6 is provided with a round table, and the positioning slider 5 is provided with a positioning circular hole, the round table is located in the positioning circular hole and forms a sliding fit, and a push rod 601 is provided on the end surface of the round table, the position of the push rod 601 corresponds to the ejector 4 on the gun body 2, and the push rod 601 of the push rod slider is used to apply pressure to the force surface 401 of the ejector 4, thereby compressing the ejector spring into place, and then installing the shell hook.

[0037] The bolt assembly is a component of an M14 automatic rifle or its derivatives. The tool base 1 is provided with a dovetail guide rail 103, and the positioning slider 5 and the push rod slider 6 are provided with dovetail grooves, which respectively cooperate with the dovetail guide rail 103. The connecting ring 7 is fixedly connected to the inner end of the screw rod 8 by a radial pin. The vertical plate and the positioning slider 5 are respectively provided with a bolt body positioning hole, and the bolt body positioning hole is provided with a clearance notch, which is used to make way for the radial protrusion at the end of the bolt body (the clearance notch on the vertical plate is used to make way for the firing pin, and the clearance notch on the positioning slider is used to make way for the shell hook.), and to circumferentially position the bolt body 2, and the step surfaces at both ends of the bolt body 2 are axially positioned on the vertical plate and the positioning slider 5. A mounting plate is provided on one side of the tool base 1, on which a clamping handle mounting hole 102 is provided. A clamping screw is threadedly fitted on the clamping handle mounting hole 102, the outer end of the clamping screw is connected to the clamping handle 11, and the inner end of the clamping screw is used to clamp and fix the gun body 2.

[0038] An assembly method based on a bolt assembly tool. When assembling the bolt assembly, first install the ejector, ejector spring 3, and firing pin into the bolt body, then place the bolt body on the tool base 1 vertical plate and positioning slide 5, complete the positioning of the bolt body by sliding the positioning slide 5, and then use the clamping handle 11 to radially compress the bolt body; rotate the screw rod 8 clockwise, the screw rod 8 drives the push rod slide 6 to move forward, the push rod 601 pushes the ejector, and the ejector compresses the ejector spring into place, and all the parts on the bolt assembly (due to the unique extractor structure of the M14, the cylindrical part of the extractor, i.e. Figure 12 The extractor mounting cylindrical surface 1001 corresponds exactly to the ejector pin and serves as the extractor's own rotation axis and the firing pin's stop pin. Install the bolt, then rotate the screw 8 counterclockwise to drive the push rod slider backward, releasing the ejector spring force. Next, move the positioning slider 5 backward, release the clamping handle 11, and remove the bolt. The bolt assembly is now complete.

[0039] Specifically:

[0040] This embodiment of a bolt assembly tool includes a positioning slider 5, which is mounted on a tool base 1 via a dovetail groove. A push rod slider 6 is also mounted on the tool base 1 via a dovetail groove. A screw base 9 is screwed to the tool base 1. The positioning slider 5 and push rod slider 6 can slide on a dovetail guide rail 103 of the tool base 1. A connecting ring 7 is fixedly connected to the connecting ring mounting hole 801 of the screw 8 via a pin. The screw thread 802 of the screw 8 engages with the screw mounting hole 902 of the screw base 9. The rotational motion of the screw 8 is converted into linear motion of the push rod slider 6. The push rod 601 of the push rod slider applies pressure to the force-bearing surface 401 of the ejector 4, thereby compressing the ejector spring to the correct position, allowing accurate insertion of the extractor hook.

[0041] Specific working principle:

[0042] When assembling the bolt parts, first install the ejector, ejector spring, and firing pin into the bolt body, then place it on the tool base 1 and the positioning slide 5, and then press it with the clamping handle 11. Rotating the screw 8 clockwise can drive the push rod slide forward, pushing the ejector to compress the ejector spring to Figure 13 The bolt assembly can now be assembled by rotating the screw 8 counterclockwise to move the push rod backward, releasing the ejector spring. Next, move the positioning slide 5 backward and release the clamping handle 11 to remove the bolt. The bolt assembly is now complete.

[0043] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A bolt assembly tool, characterized by: The tool base comprises a tool base, one end of the tool base is provided with a vertical plate, the other end of the tool base is fixed with a screw seat, a screw rod, a connecting ring, a push rod slider, and a positioning slider are sequentially arranged between the screw rod seat and the vertical plate, the screw rod cooperates with the screw rod seat to form a screw rod nut mechanism, a pressure handle is provided at the outer end of the screw rod, the push rod slider and the positioning slider are slidably fitted on the tool base and can slide longitudinally along the tool base, the positioning slider and the vertical plate are between the installation space of the gun body, the end of the push rod slider adjacent to the screw rod is provided with a U-shaped push rod connecting block, and the push rod connecting A through hole is provided on the bottom plate of the connecting block, and the inner end of the screw rod passes through the through hole on the push rod connecting block and fixes the connecting ring. The connecting ring limits the axial position of the screw rod and enables the screw rod to rotate relative to the push rod slider. A round table is provided on the push rod slider, and a positioning circular hole is provided on the positioning slider. The round table is located in the positioning circular hole and forms a sliding fit. A push rod is provided on the end surface of the round table. The position of the push rod corresponds to the ejector on the gun body. The push rod of the push rod slider is used to apply pressure to the force-bearing surface of the ejector, thereby compressing the ejector spring into place and then installing the extractor hook. A mounting plate is provided on one side of the tool base, and a clamping handle mounting hole is provided on the mounting plate. A clamping screw is threadedly fitted on the clamping handle mounting hole. The outer end of the clamping screw is connected to the clamping handle, and the inner end of the clamping screw is used to clamp and fix the gun body.

2. The bolt assembly tool according to claim 1, characterized in that: The bolt components are parts of the M14 automatic rifle or its derivative models.

3. The bolt assembly tool according to claim 1, characterized in that: The tool base is provided with a dovetail guide rail, and the positioning slider and the push rod slider are provided with dovetail sliding grooves, which are respectively matched with the dovetail guide rail.

4. The bolt assembly tool according to claim 1, wherein: The connecting ring is fixedly connected to the inner end of the screw rod through radial pins.

5. The bolt assembly tool according to claim 1, characterized in that: The vertical plate and the positioning slide block are respectively provided with a gun body positioning hole, and the gun body positioning hole is provided with a clearance notch. The clearance notch positions the gun body circumferentially, and the step surfaces at both ends of the gun body are axially positioned on the vertical plate and the positioning slide block.

6. An assembly method for the bolt assembly tool according to claim 1, characterized in that: When assembling the bolt parts, first install the ejector, ejector spring, and firing pin into the bolt body, then place the bolt body on the tool base plate and positioning slide, complete the positioning of the bolt body by sliding the positioning slide, and then use the clamping handle to radially compress the bolt body; Rotate the screw rod clockwise, the screw rod drives the push rod slider to move forward, the push rod pushes the ejector, the ejector compresses the ejector spring into place, install the extractor hook on the bolt assembly, and then rotate the screw rod counterclockwise to drive the push rod slider to move backward, releasing the ejector spring force. Then move the positioning slider backward, release the clamping handle, and remove the bolt. At this time, the bolt parts are assembled.

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