KR20170000701A - Manufacturing method of airframe with preformed fragment and airframe threof - Google Patents

Abstract

The present invention relates to a method for manufacturing a molded piece bullet, and a bullet manufactured thereby. The present invention enables a molded piece body where a plurality of molded pieces are inserted into a synthetic resin layer to be fused to the inner circumferential surface of an outer casing for a bullet to be integrated. An inner core is inserted into the outer casing for a bullet, and a molded piece is charged between the inner core and the outer casing for a bullet, and synthetic resin solution is injected to be solidified to enable the molded piece body to be formed on the inner circumferential surface of the outer casing for a bullet. Moreover, a high explosive charging assembly where a high explosive is charged is separately assembled to a high explosive assembly space inside the molded piece body in order to totally inspect the high explosive charging assembly through non-destructive inspection, thereby preventing a defect of a warhead.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for manufacturing a shaped fractured body and a method for manufacturing the same,

The present invention relates to a method for manufacturing a shaped piece body and a body manufactured by the method, and more particularly, to a molded body formed by inserting a molded piece body having a plurality of molded pieces inserted in a synthetic resin layer into an inner peripheral surface of a body- Which can easily inspect explosive filling defects and greatly reduce the defective rate in the production of a warhead of a shell, and to a body manufactured by the method.

In general, shells shot using guns have a structure in which a high explosive is embedded in the front, a propellant charge and an igniter are incorporated in the rear, and the igniter is fired by a ball.

The shell is controlled by the high-temperature high-pressure gas generated when the high-performance explosive packed in the shell of the warhead explosively explodes, and the enemy and the target are suppressed by the debris generated by scattering the warhead.

The warhead of the shell is characterized in that the high explosive assembly shown in Figure 1 comprises a turret head 7 and a wing assembly 4 composed of a fuse 1, a high explosive body 2, a high explosive 3, 4, and a propellant charge 6 mounted on the vane assembly 4. The propellant charge 6,

The body is made of a material from which debris can be formed, and is scattered by a large number of debris by the explosion of the high explosive, thereby suppressing the human and object targets.

However, in such a structure, there is a problem that energy is consumed in the seam of the body (2) when explosion of the high explosive (3) filled in the interior is consumed, and the size and scattering direction of the fragments are uneven and the power is reduced.

It is an object of the present invention to provide a method for manufacturing a warhead of a shell, which is capable of simplifying a manufacturing process by integrating a molded piece having a plurality of molded pieces inserted into a synthetic resin layer into an inner circumferential surface of the outer casing, A method of manufacturing a shaped piece body with a significantly reduced percentage of defects, and a method of manufacturing the same, and a warhead including the body.

According to an aspect of the present invention, there is provided a method for manufacturing a shaped piece body, comprising: forming a molded piece body in which a plurality of molded pieces inserted in a synthetic resin layer are fused to an inner peripheral surface of a body- The method includes the steps of preparing an outer casing for a body having an outer casing for a body formed with a space open at one side thereof; inserting an inner core into the body casing, An inner core inserting step of forming a squeeze molding space, a molding debris filling step of filling a plurality of molding debris in the molding space, a synthetic resin injection and curing step of injecting and curing a synthetic resin solution into the molding space, The inner core is separated from the outer casing, Characterized by including separate core forming a space around the assembly.

In the present invention, the inner core inserting step may apply the releasing agent to the outer circumferential surface before inserting the inner core.

According to the present invention, in the step of filling the molded pieces, the weight of the molded pieces can be measured and the molded pieces can be filled in the molded piece forming space with the reference amount.

According to the present invention, in the step of filling the molded pieces, vibration may be applied to the external casing for the body by the vibration jig, and the molded pieces may be filled through the filling jig.

In the present invention, the synthetic resin solution is a mixture of a liquid synthetic resin as a main material and a curing agent for curing the synthetic resin, and the synthetic resin injection and curing step is performed by inserting the external casing for the body into a vacuum chamber in a vacuum state, The synthetic resin liquid can be injected into the molding space of the molded piece body.

In the present invention, the synthetic resin injection and curing step may be performed by inserting the outer casing for the body into the heating chamber and then heating the synthetic resin solution for each predetermined temperature interval for a predetermined period of time.

The method of manufacturing a shaped fractured body according to an exemplary embodiment of the present invention may further include assembling a high fat filling assembly for assembling a high fat filling assembly that has been subjected to a nondestructive inspection.

In the present invention, the step of assembling the high-explosive assembly includes the steps of inserting the high-explosive assembly into the high explosive assembly space, fixing the assembly position of the high explosive assembly to the open end side of the external casing, Lt; RTI ID = 0.0 > adapter. ≪ / RTI >

The method for manufacturing a shaped fractured body according to an embodiment of the present invention may include a step of determining whether the molded pieces are uniformly distributed around the inner circumference of the shell for external use by a balancing inspection apparatus between the core separating step and the high- And may further include a balancing inspection step for confirming the balance.

According to an aspect of the present invention, there is provided a molded body having an outer casing for a body, the inner casing having an inner space open at one side thereof, and a plurality of molding Wherein the synthetic resin layer of the molded piece body is fused to the inner circumferential surface of the outer shell for the body, and the molded body of the molded body is filled with a high explosive pack And a high explosive assembly space to be inserted is formed.

In the present invention, the high-filling assembly inserted into the high explosive assembly space may be assembled after the non-destructive test.

The present invention is characterized in that a molded piece body in which a plurality of molded pieces are inserted into a synthetic resin layer is fused to an inner peripheral surface of the outer casing for a body to integrate the high explosive packed high- It is possible to perform the inspection, thereby preventing the occurrence of defects in the warhead.

The present invention has the effect of increasing the productivity and reducing the manufacturing cost by simplifying the process of manufacturing the shaped shaved body having the molded shavings therein.

1 is a sectional view showing a conventional high explosive;
Fig. 2 is a process diagram of a method for manufacturing a shaped fracture piece according to the present invention
Figs. 3 to 5 are schematic views showing a method of manufacturing a molded piece piece body according to the present invention
6 is a cross-sectional view showing a molded piece piece body according to the present invention
Fig. 7 is an exploded perspective view showing a molded piece warhead according to the present invention. Fig.
Fig. 8 is a cross-sectional view showing a molded piece warhead according to the present invention

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

FIG. 2 is a process diagram of a method of manufacturing a shaped piece of material according to an embodiment of the present invention. Referring to FIG. 2, a method of manufacturing a molded piece of material according to an exemplary embodiment of the present invention includes: (S100) for preparing a cylindrical outer casing (10) having a space open at one side thereof, the method comprising the steps of: preparing an outer casing (S100) for forming a body, the outer casing being fused to an inner circumferential surface of the outer casing ), An internal core insert (50) is inserted into the external casing (10) for forming a molded body (10a) between the internal core (50) and the external casing for body A molded piece forming step of forming a plurality of shaped pieces 22 in the formed molded piece forming space 10a by using a synthetic resin solution injected into the molded piece forming space 10a, Injection and (S500) for forming a high explosive assembly space (20a) into which the high-pressure filling assembly (30) is inserted into the external casing (10) by separating the internal core (50) .

In addition, the method for manufacturing a shaped fractured body according to an exemplary embodiment of the present invention may further include assembling a high-strength filling assembly (S600) for assembling the high-strength filling assembly 30 which is nondestructively inspected.

FIGS. 3 to 5 are schematic views showing a method of manufacturing a molded piece shaving body according to the present invention. More specifically, FIG. 3 illustrates the outer casing preparing step S100 and the inner core inserting step S200.

Referring to FIG. 3, the outer casing 10 has a nonlinear shape, that is, an outer circumferential surface and a circumferential surface of the outer circumferential surface are curved.

The outer casing 10 is formed as a non-linear curve having a convex center at its center so that a molded piece having a plurality of molded pieces inserted into the synthetic resin layer is separately manufactured and coupled to the inside of the outer casing for body impossible.

The outer casing 10 may have a groove portion protruding toward the inner circumferential surface at the time of designing, and a groove may be formed at the groove portion, so that a groove is formed in the outer circumferential surface to form a protrusion portion on the inner circumferential surface It is practically impossible to have a structure in which the molded piece body 20 in which a plurality of molded pieces 22 are inserted in the synthetic resin layer 21 is separately manufactured and joined to the inside of the external casing for the body.

The method for manufacturing a shaped piece body according to the present invention is characterized in that a molded piece body 20 in which a plurality of molded pieces 22 are inserted in a synthetic resin layer 21 is fused to an inner peripheral surface of the outer casing 10 for body .

The outer shell 10 for a shell is formed with a molded piece 20 having a plurality of molded pieces 22 inserted into a synthetic resin layer 21 therein and a molded body 20 inserted into the molded piece 20, 32 are inserted, and the space is open to one side, that is, toward the distal end side.

It is preferable that the external casing for the shell 10 is made of steel containing 0.5 wt% to 0.7 wt% of carbon and 0.80 wt% to 0.90 wt% of manganese. For example, it is preferable that the outer casing 10 is formed of a material from which fragments can be easily formed.

The inner core 50 has a shape corresponding to the shape of the high-tension filling assembly 30 and is inserted into the external casing 10 for casting to form a plurality of molded pieces 22 on the outer periphery thereof. 10a.

The inner core inserting step (S200) preferably applies the releasing agent to the outer peripheral surface before inserting the inner core (50). That is, the inserting step (S200) of inserting the inner core inserts the inner core (50) coated with the releasing agent into the outer casing (10).

The inner core 50 is coated with a mold releasing agent on the outer circumferential surface thereof and injected into the molding space 10a to facilitate separation from the cured synthetic resin layer 21. [

4, the step S300 of injecting the molded pieces includes the step of injecting the resin into the outer peripheral surface of the inner core 50 and the outer peripheral surface of the inner core 50, A large number of molded pieces 22 are filled in the molded piece forming space 10a between the inner circumferential surfaces of the outer casing 10 for the body.

The molded piece 22 may be of various shapes such as a ball, a cubic bar, and a cylindrical bar. In the present invention, a steel ball is used as an example.

In the molded piece shaking step (S300), it is preferable to measure the weight of the molded piece 22 and fill the molded piece 22 in the molded piece molding space 10a with a reference amount suitable for the kill criterion.

Further, in the step of filling the molded piece (S300), the molded piece filling jig is assembled to the opened leading end side of the external casing for body 10, the vibration jig is connected to the external casing for body 10, And the molded piece 22 is filled through the filling jig while vibrating the external casing for body 10 with a jig.

That is, in the step of filling the molded pieces, vibrations are applied to the external casing for body 10 so that the molded pieces 22 can be uniformly filled in the molded piece forming space 10a.

In the synthetic resin injection and curing step S400, the synthetic resin liquid is injected into the empty space between the molded pieces 22 in the molded piece forming space 10a to cure the external space of the external casing 10, The molded synthetic resin layer 21 is fixed to the inner circumferential surface of the outer casing 10 by forming the synthetic resin layer 21 to be fused to the inner circumferential surface of the outer casing 10 by the synthetic resin layer 21.

Since the molded piece 22 has a shape such as a ball, a cubic bar, and a cylindrical rod, an empty space is formed between the molded pieces 22 filled in the molded piece molding space 10a, The synthetic resin solution is injected and filled.

The synthetic resin solution is a mixture of a liquid synthetic resin, which is a main material, and a curing agent for curing the synthetic resin.

The liquid synthetic resin is an epoxy resin.

In the step of injecting the synthetic resin in the step of injecting and hardening synthetic resin (S400), the external casing 10 is inserted into a vacuum chamber in a vacuum state and then injected into the molding space 10a It is preferable to inject the synthetic resin solution.

That is, in the process of injecting the synthetic resin solution, the synthetic resin solution is injected into the molding space 10a in a vacuum state to prevent pores from being generated in the synthetic resin layer 21 formed by curing the synthetic resin solution .

The process of curing the synthetic resin liquid is exemplified by heating the epoxy resin outer casing 10 in a heating chamber at intervals of 100 ° C to 150 ° C for 4 hours or more to cure the epoxy.

5, the core separating step S500 and the high-precision filling assembly assembling step S600 are illustrated. Referring to FIG. 5, the inner core 50 is coated with a releasing agent on the outer circumferential surface, (20) which is fused to the inner circumferential surface of the cylindrical outer casing (10).

Since the internal core 50 has a shape corresponding to that of the high-pressure filling assembly 30 filled with the high explosive 32, the inner core 50 is separated from the inside of the outer casing, The high explosive assembly space 20a into which the filled high-filling assembly 30 is inserted is formed in the molded piece 20.

The assembling step S600 of the high-strength filling assembly accurately discriminates whether there is a defect in pores or the like in the high-strength filling assembly 30 through the nondestructive inspection and then the high-strength filling assembly 30 is inserted into the high explosive assembly space 20a ).

The assembling step S600 of the high-strength filler assembly is performed by inserting the high-filler assembly 30 into the high explosive assembly space 20a and assembling the high-filler assembly 30 to the open- And fixing the position and coupling the adapter 40 to connect the fuse.

The adapter 40 is fastened and coupled to the end side of the shell outer casing by screwing.

Although not shown, the method for manufacturing a shaped fractured body according to an embodiment of the present invention further includes a step of forming the molded piece 22 with a balancing inspection apparatus between the core separating step (S500) and the high-precision filling assembly assembling step (S600) And a balance checking step of confirming whether the outer casing 10 is uniformly distributed around the inner casing 10.

In the balancing inspection step, it is determined whether or not the distribution of the molded pieces 22 distributed around the inner circumference of the outer casing 10 is equal to or less than a reference value, and if the distribution is less than a reference value, do.

FIG. 6 is a cross-sectional view illustrating a molded piece piece body according to an embodiment of the present invention. The molded piece piece body according to an embodiment of the present invention includes a body external casing 10 having a space opened at one side thereof, And a molded piece 20 formed on the inner circumferential surface of the outer casing for body 10 and having a plurality of molded pieces 22 inserted into the synthetic resin layer 21.

The molded piece body (20) has a synthetic resin layer (21) fused to the inner peripheral surface of the outer casing (10); And

And a plurality of molded pieces (22) inserted into the synthetic resin layer (21).

That is, the synthetic resin layer 21 of the molded piece body 20 is fused to the inner circumferential surface of the outer casing 10, and a bullet explosion 32 is formed inside the molded piece body 20 The high explosive assembly space 20a into which the filled high-filling assembly 30 is inserted is formed.

The high explosive assembly 30 is inserted into the high explosive assembly space 20a and the high explosive assembly 30 is assembled after the non-destructive test.

FIG. 7 is an exploded perspective view showing a shaped debris warhead according to an embodiment of the present invention, FIG. 8 is a sectional view showing a shaped debris warhead according to an embodiment of the present invention, and FIG. The shaped fragmented warhead according to an embodiment of the present invention includes a shell outer casing 10 having a space open at one side thereof and a synthetic resin layer 21 formed by fusing to the inner circumferential surface of the shell outer casing 10 A molded explosive body 20 in which a plurality of molded pieces 22 are inserted and a high explosive assembly space 20a is formed therein and a high explosive 32 are filled in the molded explosive body 20 and the high explosive assembly space 20a is detachably (Not shown).

The sparger assembly 30 includes an inner casing 31 formed to correspond to the high explosive assembly space 20a and a high explosive 32 filled within the inner casing 31.

It is noted that the high explosives 32 are known and a more detailed description is omitted.

In addition, the shaped debris warhead according to the embodiment of the present invention includes an adapter 40 connected to the open end side of the shell outer casing to fix the assembling position of the high-tension charging assembly 30, .

The adapter 40 is fastened and coupled to the end side of the shell outer casing by screwing.

Since the high-strength filling assembly 30 is manufactured as a completely separate assembly from the external casing 10 for the body and inserted and assembled into the molded piece 20, The non-destructive inspection of the non-destructive test can be carried out by a full inspection.

The present invention is characterized in that the molded piece 22 is fused to the inner circumferential surface of the outer casing for a body 10 by synthetic resin and the high explosive assembly 30 filled with the high explosive 32 is separately assembled, It is possible to perform full inspection, thereby preventing the occurrence of defects in the warhead.

The present invention simplifies the process of manufacturing a molded piece having a molded piece (22) therein, thereby increasing productivity and reducing manufacturing cost.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the above teachings. will be.

10: outer casing for body 10a: molding space
20: molded piece body 20a: high explosive assembly space
21: synthetic resin layer 22: molded debris
30: High filling assembly 31: Inner casing
32: High explosive 40: Adapter
50: internal core

Claims (11)

A molded piece piece manufacturing method in which a molded piece piece in which a plurality of molded pieces are inserted into a synthetic resin layer is fused to an inner circumferential surface of the outer casing for a body,
Preparing an outer casing for a cartridge, the outer casing having a space opened at one side thereof;
An inner core inserting step of inserting an inner core into the outer casing for forming a molding space for forming a molded piece body between the inner core and the outer casing for the casing;
A molding debris filling step of filling a plurality of molding debris in the molding space;
A synthetic resin injection and curing step of injecting and curing a synthetic resin solution into the molding space; And
And a core separating step of separating the internal core to form a high explosive assembly space into which the high-pressure filling assembly is inserted into the external casing for the body. The method according to claim 1,
Wherein the internal core inserting step includes:
And a releasing agent is applied to the outer circumferential surface before inserting the inner core. The method according to claim 1,
Wherein the step of filling the molded pieces comprises:
Measuring the weight of the molded piece, and filling the molded piece with the reference amount into the molded piece molding cavity. The method according to claim 1,
Wherein the molding shavings are filled with molding debris through the filling jig while vibrating the outer casing for shaving with a vibrating jig. The method according to claim 1,
The synthetic resin solution is a mixture of a liquid synthetic resin, which is a main material, and a curing agent,
Wherein the synthetic resin injection and curing step comprises injecting the synthetic resin solution into the molding space of the molded piece using a syringe after inserting the outer casing for the syringe into a vacuum chamber in a vacuum state. The method according to claim 1,
Wherein the synthetic resin injection and curing step comprises curing the synthetic resin solution by heating the outer casing for a predetermined period of time after inserting the outer casing for a predetermined time into the heating chamber. The method according to claim 1,
Further comprising a high-fill-pack assembly assembling step of assembling the non-destructively tested high-fill packing assembly. The method of claim 7,
Wherein said assembling step comprises:
And inserting the adapter capable of connecting the fuse into the high explosive assembly space and then fixing the assembly position of the high explosive assembly to the open end side of the external shell casing, Of the molded body. The method of claim 7,
Further comprising a balancing inspection step for checking whether the molded pieces are uniformly distributed around the inside of the outer casing for balancing with the balancing inspection apparatus between the core separating step and the high-precision filling assembly assembling step. A method of manufacturing a body. An outer casing for a body having an inner space opened therein; And
And a molded piece body which is formed on an inner peripheral surface of the outer casing for the body and in which a plurality of molded pieces are inserted into the synthetic resin layer,
Wherein the synthetic resin layer of the molded piece body is fused to the inner circumferential surface of the shell for external use and the molded explosive body is formed with a high explosive assembly space in which a high- Shaped debris. The method of claim 10,
Wherein the high-filling assembly inserted into the high explosive assembly space is assembled after the non-destructive inspection.

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