KR102467804B1 - Incremental forming apparatus for manufacturing projectile and manufacturing method of projectile using the same - Google Patents

Abstract

The present invention relates to an incremental forming device for manufacturing a projectile and a method for manufacturing a projectile using the same. An end side of a material for manufacturing a projectile is extended by minutely moving a mandrel part forward while the end side of the material for manufacturing a projectile is supported on one surface of a jig part for forming a body. A second projectile body part with a small diameter is formed by passing an extended part through a passage part for forming a body of the jig part for forming a body. A part extended from a fore-end part of the second projectile body part is inserted into a cone forming groove part of a placed jig part for forming a cone to form a projectile from a cone body part using an incremental forming method utilizing a forming free forging method, thereby reducing costs for manufacturing a projectile and costs for maintaining a forming device. A body part of a projectile and a cone part of a fore-end part is formed together, thereby simplifying the process of manufacturing a projectile and enabling a gunpowder charging depth in a projectile to be checked easily using the depth of an inserted mandrel part.

Description

Gradual forming apparatus for manufacturing carbon body and method for manufacturing carbon body using the same

The present invention relates to a gradual molding apparatus for manufacturing a tan body and a method for manufacturing a tan body using the same, and more particularly, to a gradual molding apparatus for manufacturing a tan body that can be manufactured by shaping a tan body by a gradual molding method using a mandrel and a method for manufacturing a tan body using the same It is an invention.

Due to its characteristics, the bullet body for large penetrating projectiles must have strong rigidity to have high penetrating power while protecting the gunpowder inside.

Therefore, the body for large penetrating bullets is generally manufactured using a back extrusion manufacturing method, that is, a mold forging method, to secure the rigidity of the material.

That is, the conventional body for large penetrating bullets is manufactured by heating a billet to a high temperature, placing it in a mold, and then using the molding pressure of a press.

Since the body of the large penetrating projectile uses a high-strength material such as mold steel for the material, that is, the billet, it requires a molding pressure of several thousand tons to several tens of thousands of tons and requires equipment that provides a molding height (daylight) according to the total length of the projectile. do.

The bullet body for large penetrating projectiles has a characteristic in that the overall length of the bullet body is greatly required in order to improve the penetrating power.

Accordingly, in the case of manufacturing the body for a large penetrating bullet by the rear extrusion method, there is a problem in that there is a limitation according to the forming pressure and the forming height (daylight) of the press.

Therefore, the conventional manufacturing method of manufacturing a body for a large penetrating bullet by the backward extrusion method requires a molding pressure of 1,000 tons to tens of thousands of tons, and manufacturing cost and maintenance of equipment that provides a molding height (daylight) according to the total length of the projectile There was a problem with cost.

Korean Patent Registration No. 0405290 "Rear Extrusion Method and Product" (2003.10.31. Registration)

An object of the present invention is to provide a gradual molding device for manufacturing a projectile and a method for manufacturing a projectile using the same, which can reduce the manufacturing cost of the projectile and the maintenance cost of the molding device by shaping the projectile by progressive molding using a free forging method.

Another object of the present invention is to provide a gradual molding apparatus for manufacturing a bullet body and a bullet manufacturing method using the same, which simplifies the manufacturing process of a bullet body by molding the body portion and the cone portion of the front end of the bullet body together.

In order to achieve the object of the present invention described above, one embodiment of the gradual molding apparatus for manufacturing a tan body according to the present invention is a gradual molding apparatus for manufacturing a tan body by molding a heated cylindrical material for manufacturing a tan body. A mandrel part of which is inserted into the interior of the material for manufacturing a body at one end side, a mandrel linear moving unit for extending the front end of the material for manufacturing a body by moving the mandrel forward and backward, the mandrel linear moving unit It is characterized in that it includes a body molding jig for reducing the diameter of the material for manufacturing the bullet body through which the material for manufacturing the projectile moving forward by operation is passed.

In the present invention, the jig for body molding includes a first lower jig member having a first passage part forming a part of the passage part for body molding on an upper surface, and a second passage forming the remaining part of the passage part for body molding on a lower surface. A first upper jig member positioned between the first upper jig member and the first lower jig member and the first upper jig member to elastically support the first upper jig member so as to be spaced apart from the first lower jig member. A spring member for supporting the jig may be included.

One embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention may further include a first jig pressing unit for pressing the first upper jig member.

In the present invention, a first spring insertion portion into which the spring member for supporting the first jig is inserted is positioned on an upper surface of the first lower jig member, and the first spring insertion portion is a portion of the lower end of the spring member for supporting the first jig. is inserted, and when the first upper jig member is seated on the upper surface of the first lower jig member by the operation of the first jig pressing unit, the entire spring member for supporting the first jig can be inserted to a depth. can be formed

In the present invention, the first body forming part for forming the body is located at the inlet side and has a smaller diameter toward the outlet side, and the second body forming part having the same diameter from the end of the first body forming part to the outlet side. wealth may be included.

One embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention further includes a cone molding jig for forming a cone body having a cone shape on an end side of the material for manufacturing a carbon body that is elongated, and the cone molding jig is the A cone forming groove formed in a cone shape by inserting the material for manufacturing the carbon body, which is extended by the forward movement of the mandrel part, may be positioned in an open form toward the material for manufacturing the carbon body.

In the present invention, the jig for cone molding includes a second lower jig member having a first molding groove portion forming a part of the cone molding groove portion on an upper surface, and a second molding groove forming the remaining portion of the cone molding groove portion on a lower surface. A second upper jig member located between the second upper jig member and the second lower jig member and the second upper jig member to elastically support the second upper jig member so as to be spaced apart from the second lower jig member. 2 may include a spring member for supporting the jig.

In the present invention, a second spring insertion portion into which the spring member for supporting the second jig is inserted is positioned on the upper surface of the second lower jig member, and the second spring insertion portion is a portion of the lower end of the spring member for supporting the second jig. When this is inserted, and the second upper jig member is pressed and seated on the upper surface of the second lower jig member, the whole of the second jig support spring member may be formed to a depth into which it can be inserted.

One embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention may further include a second jig pressing unit that presses the second upper jig member and brings it into close contact with the second lower jig member.

One embodiment of the gradual molding apparatus for manufacturing a body according to the present invention may further include a jig horizontally moving part for linearly moving the body molding jig and the cone molding jig in left and right directions.

One embodiment of the gradual molding apparatus for manufacturing a body according to the present invention further includes a jig for body molding and a jig base to which the mandrel linear moving part is mounted, and the body molding jig and the cone molding jig are The jig base part is disposed on a straight line to be movable in left and right directions, and is moved left and right by the jig horizontally moving part to face the material for manufacturing the body coupled to the mandrel part. Can be selectively positioned have.

One embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention further includes a first jig pressing unit for pressing the first upper jig member, and the second upper jig member is pressed by the first jig pressing unit The lower surface may be in close contact with the upper surface of the second lower jig member.

In the present invention, the jig for forming the cone is positioned on a straight line with the jig for forming the body, and the tip of the material for manufacturing the body, passing through the jig for forming the body, is inserted into the tip of the material for manufacturing the body, and the cone body is extended. can be molded.

One embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention may further include a jig linear moving unit for linearly moving the cone forming jig unit forward and backward.

One embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention may further include a second jig pressing unit that presses the second upper jig member and brings it into close contact with the second lower jig member.

One embodiment of the gradual forming apparatus for manufacturing a carbon body according to the present invention may further include a pressing unit moving device for moving the second jig pressing unit forward and backward according to the position of the cone molding jig unit.

In order to achieve the above object of the present invention, an embodiment of the method for manufacturing a bullet according to the present invention is a first bullet body, a second bullet located at the front end side of the first bullet body and having a smaller diameter than the first bullet body. A method for manufacturing a bullet body including a body portion and a cone body portion located at the front end of the second bullet body portion and having a cone shape, wherein a cylindrical bullet body manufacturing material having the same outer diameter as the first bullet body portion can be progressively formed. Billet preparation step of preparing by heating to prepare a billet, progressive forming preparation step of horizontally positioning the material for production of the body by inserting a mandrel that can be linearly moved in the forward and backward directions at the rear end of the material for production of the body, forward movement of the mandrel A bullet body forming step of gradually elongating the front end side of the material for manufacturing the bullet body and forming the second bullet body portion by passing the elongated front end side through the body molding passage part located in the jig for body molding. characterized by

In one embodiment of the method for manufacturing a bullet body according to the present invention, in the bullet body forming step, after forming the second bullet body on the front end side of the material for manufacturing a bullet body, the front end of the second bullet body is gradually moved forward by the mandrel. It may further include a cone forming step of forming the cone body by inserting the jig for cone forming into the cone forming groove while extending the cone.

In the present invention, the billet preparation step may further include a mandrel insertion part forming process of forming a mandrel insertion part into which the mandrel part can be inserted on one surface of the rear end side of the material for manufacturing a carbon body.

The present invention has the effect of reducing the manufacturing cost of the body and the maintenance cost of the forming device by shaping the body by gradual forming utilizing the free forging method.

The present invention has an effect of simplifying the manufacturing process of the bullet body by molding the body portion and the cone portion of the distal end of the bullet body together.

The present invention has the effect of easily checking the depth of gunpowder filling in the bullet body through the depth into which the mandrel part is inserted.

1 is a perspective view showing an embodiment of a gradual molding apparatus for manufacturing a body according to the present invention.
2 and 3 are views showing an embodiment of a jig for body molding in one embodiment of a gradual molding apparatus for manufacturing a body according to the present invention.
Figure 4 is a perspective view showing another embodiment of a gradual molding apparatus for manufacturing a body according to the present invention.
5 and 6 are diagrams showing one embodiment of a jig for cone molding in one embodiment of a gradual molding apparatus for manufacturing a body according to the present invention.
Figure 7 is a schematic diagram showing another embodiment of a gradual molding apparatus for manufacturing a body according to the present invention.

The present invention is described in more detail.

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Prior to the detailed description of the present invention, the terms or words used in the present specification and claims described below should not be construed as being limited to common or dictionary meanings. Therefore, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, so various alternatives can be made at the time of this application. It should be understood that there may be equivalents and variations.

1 is a perspective view showing an embodiment of a gradual molding apparatus for manufacturing a body according to the present invention, and with reference to FIG. 1, an embodiment of a gradual molding apparatus for manufacturing a body according to the present invention will be described in detail below.

One embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention is a gradual molding apparatus for manufacturing a carbon body by molding a heated cylindrical material for manufacturing a carbon body 10, and more specifically, a heated cylindrical material for manufacturing a carbon body ( 10) is moved horizontally, that is, horizontally, to form the body by moving it forward and backward.

The material 10 for manufacturing a bullet body is an example of using a billet of mold steel in the case of a bullet body for a large penetrating projectile, and in addition, it is revealed that it can be variously modified and implemented using a known billet applied according to the type of warhead.

One embodiment of the gradual forming apparatus for manufacturing a carbon body according to the present invention is a mandrel part 100 in which a part is inserted into the material for manufacturing a carbon body 10 from the rear end side of the material for manufacturing a carbon body 10 heated to a temperature capable of progressive molding ).

The mandrel unit 100 is positioned in a horizontal state and moved forward and backward by the mandrel linear moving unit 200.

The mandrel linear moving unit 200 moves the horizontally positioned mandrel unit 100 forward and backward in a horizontal state, and is an example of a hydraulic cylinder. In addition, a ball screw type linear actuator, a rack gear and a rack It can be variously modified and implemented using a known linear movement device such as a rack and pinion structure that converts the rotational force of a motor into linear movement, including a pinion gear engaged with a gear and rotated by a motor, and further detailed descriptions are omitted. reveal

A mandrel insertion groove into which the mandrel 100 can be inserted is located at the center of the rear end of the heated carbon body manufacturing material 10.

A part of the mandrel part 100 is inserted into the mandrel insertion groove located in the center of one side of the rear end side of the heated carbon body manufacturing material 10.

The material for manufacturing the body 10 is inserted into one side of the rear end side of the mandrel part 100 and is horizontal to the ground, that is, the mandrel linear moving part 200 in a state where it is positioned horizontally to the working surface of the plane. By operation, it moves forward and backward together with the mandrel part 100, and the mandrel part 100 moves forward while the front end side is supported by the jig part 300 for body molding, which will be described later. That is, the length of the distal end side is gradually increased.

Although not shown, the gradual molding apparatus for manufacturing a carbon body according to the present invention further includes a material fixing jig unit for holding and fixing the material for manufacturing a carbon body 10, and the mandrel unit 100 in a state in which the material fixing jig unit catches and fixes the material 10 for manufacturing a carbon body. ) while finely moving the front end side of the material for manufacturing a carbon body 10 can be stretched, and the front end side of the material for manufacturing a carbon body 10 being stretched is passed through a body molding jig 300 to be described later, and the body is progressively molded. make it clear that it can be done.

Although the material fixing jig unit is not shown, it can be variously modified and implemented in a known jig structure capable of wrapping and fixing the cylindrical body material 10 for manufacturing, and more detailed descriptions will be omitted.

In the carbon body manufacturing material 10, the front end extending by the mandrel unit 100 advanced by the operation of the mandrel linear moving unit 200 passes through the jig unit 300 for body molding, and the diameter is reduced, that is, , the second bullet body 12 is molded.

The bullet body includes a first bullet body 11, a second bullet body 12 located at the front end side of the first bullet body 11 and having a smaller diameter than the first bullet body 11, and a second bullet body. One example is to include a cone body portion 13 located on the front end side of the portion 12 and having a cone shape.

The material for manufacturing the bullet body 10 is prepared in a cylindrical shape equal to the diameter of the first bullet body 11, and the second bullet body 12 is molded while passing through the body molding jig 300.

The body shaping jig 300 includes a body shaping passage 301 having an inner diameter smaller than the outer diameter of the body shaping material 10 .

The passage part 301 for body molding is formed to have the same diameter as the diameter of the second bullet body 12 in the previously designed bullet body, that is, a corresponding diameter, and may be formed to have various inner diameters according to the shape of the previously designed bullet body. have.

The through-portion 301 for body molding is formed in the form of an open front and rear surface, and the diameter of the distal end is passed through the distal end of the carbon body manufacturing material 10, which is extended toward the distal end by the operation of the mandrel linear moving unit 200. The second bullet body 12 is molded on the front end side of the passed bullet body manufacturing material 10 by reducing the .

One embodiment of the gradual molding apparatus for manufacturing a body according to the present invention further includes a body molding jig 300 and a jig base 400 to which the linearly moving mandrel 200 is mounted.

The body forming jig 300 and the mandrel linear moving unit 200 are mounted on the upper part of the jig base 400 to carry out the gradual forming process of the material for manufacturing the body 10 in a fixed state.

2 and 3 are diagrams showing an embodiment of a body molding jig 300 in an embodiment of a progressive molding apparatus for manufacturing a body according to the present invention, referring to FIGS. 2 and 3, the body molding jig An embodiment of unit 300 is described in detail below.

The body molding jig 300 includes a first lower jig member 310 having a first passage part forming a part of the body molding passage part 301 on the upper surface, and a body molding passage part 301 on the lower surface. The first upper jig member 320, the first lower jig member 310 and the first upper jig member 320, where the second passage part forming the rest of the position is located, the first upper jig member 320 ) includes a first jig supporting spring member 330 that elastically supports and positions the first lower jig member 310 and spaced apart from each other.

And, one embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention further includes a first jig pressing unit 500 for pressing the first upper jig member 320 .

The first jig pressing unit 500 presses the upper surface of the first upper jig member 320, the first pressing member 510, and the first pressing member 510 moves up and down. One example is to include the device 520 .

The first elevating and descending device 520 for pressurization is an example of a hydraulic cylinder, and in addition, a linear actuator of a ball screw type, a rack gear and a pinion gear meshed with the rack gear and rotated by the motor are included to linearly move the rotational force of the motor. A more detailed description of the bar that can be variously modified and implemented using known lifting and lowering devices such as a rack and pinion structure that converts to a bar is omitted.

The first jig supporting spring members 330 are positioned on both sides of the through portion 301 for body molding, respectively, and can stably support the first upper jig member 320 .

The first jig pressing unit 500 presses the first upper jig member 320 to bring the lower surface of the first upper jig member 320 into close contact with the upper surface of the first lower jig member 310, When the upper jig member 320 and the first lower jig member 310 are brought into close contact with each other so that the material for manufacturing the body 10 passes through the body molding passage part 301, the body molding passage part 301 is formed in a preset form. It allows the passage part 301 for body molding to be accurately molded in a pre-designed shape while the material for manufacturing the body 10 stably passes through.

When the pressurization of the first jig pressing unit 500 is released, the first upper jig member 320 is moved up and down by the elastic restoring force of the first jig supporting spring member 330 and is separated from the first lower jig member 310. When the mandrel part 100 moves backward by the mandrel linear moving part 200, the molded part of the material 10 for manufacturing a body, that is, the second bullet body part 12 is moved from the jig part 300 for body molding It can be separated stably without damage.

For example, the first passage part and the second passage part each form half of the body molding passage part 301 in a semicircular space.

In addition, the passage part 301 for body molding is a first body molding part 301a, which is located at the inlet side and has a smaller diameter toward the outlet side, and is for body molding at the end of the first body molding part 301a on the outlet side. It includes a second body forming part (301b) formed with the same diameter as the outlet of the passage part (301).

In the first body forming part 301a, the inner diameter of the inlet is the same as the outer diameter of the material 10 for manufacturing the bullet body, that is, the outer diameter of the first bullet body 11 previously designed in the bullet body, and the inner diameter of the outlet side is the same as the It is formed the same as the outer diameter of the second bullet body 12.

And, the second body forming part (301b) has the same cylindrical shape as the exit side diameter of the first body forming part (301a) in the longitudinal direction, that is, in the linear movement direction of the material 10 for producing the carbon body.

The first body forming part 301a guides the second bullet body 12 having a small diameter in the bullet body so that it can be gradually formed so that the second bullet body 12 can be formed into an accurate shape, and the diameter It serves to form a cone-shaped inclined surface at the boundary between the large first bullet body 11 and the second bullet body 12 having a small diameter.

In addition, the second body forming part 301b is a cylindrical hollow part having the same inner diameter as the diameter of the pre-designed second bullet body part 12 in its entire length, and is stretched by the linear movement of the mandrel part 100. Material for manufacturing a bullet It enables the front end side of (10) to be precisely molded into a pre-designed bullet body shape.

A first spring insertion portion 311 into which a spring member 330 for supporting the first jig is inserted is positioned on an upper surface of the first lower jig member 310, and the first spring insertion portion 311 supports the first jig. When a part of the lower end of the spring member 330 is inserted and the first upper jig member 320 is seated on the upper surface of the first lower jig member 310 by the operation of the first jig pressing unit 500 The entire spring member 330 for supporting the first jig is formed to a depth that can be inserted.

When the first upper jig member 320 is pressed by the operation of the first jig pressing unit 500, the first jig supporting spring member 330 is inserted into the first spring insertion part 311 and the first upper jig member The lower surface of the 320 is in close contact with the upper surface of the first lower jig member 310 to form the through portion 301 for shaping the garden body.

4 is a perspective view showing another embodiment of a progressive molding apparatus for manufacturing a carbon body according to the present invention, and FIGS. 5 and 6 are a cone molding jig 600 in one embodiment of a progressive molding apparatus for manufacturing a carbon body according to the present invention. It is a drawing showing one embodiment of.

Referring to FIGS. 4 to 6, another embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention will be described in detail below.

Another embodiment of the gradual molding apparatus for manufacturing a bullet body according to the present invention forms the front end side of the bullet body, that is, is located on the front end side of the second bullet body portion 12, and is located on the end side of the material for manufacturing a bullet body 10 that is extended. It further includes a cone molding jig 600 for molding the cone body 13 having a cone shape.

In the cone molding jig 600, the cone molding groove 601 formed in a cone shape by inserting the carbon body manufacturing material 10, which is extended by the forward movement of the mandrel 100, forms the carbon body manufacturing material 10. It is positioned in an open form toward the

In more detail, the cone molding jig 600 includes a second lower jig member 610 on the upper surface of which a first molding groove portion forming a part of the cone molding groove 601 is located, and a cone molding groove 601 on the lower surface. The second upper jig member 620, the second upper jig member 620 where the second molding groove forming the remaining part is located, and the second upper jig member which is located between the second lower jig member 610 and the second upper jig member 620 ( 620) includes a second jig support spring member 630 that elastically supports and positions the second lower jig member 610 and spaced apart from each other.

The second upper jig member 620 is pressed by the first jig pressing unit 500 so that the lower surface comes into close contact with the upper surface of the second lower jig member 610 so that the previously designed cone molding groove 601 is formed into an accurate shape. allow it to be positioned.

Then, when the pressurization of the first jig pressing unit 500 is released, the second upper jig member 620 is moved up and down by the elastic restoring force of the second jig support spring member 630, and the second lower jig member 610 and While being spaced apart, when the mandrel part 100 is moved backward by the mandrel linear moving part 200, the molded part of the material for manufacturing a body 10, that is, the cone body part 13, is removed from the cone molding jig part 600 It can be separated stably without damage.

It should be noted that the cone molding jig 600 may be pressed by the first jig pressing unit 500 or by another separate jig pressing unit.

The second spring insertion portion into which the second jig support spring member 630 is inserted is located on the upper surface of the second lower jig member 610, and the second spring insertion portion is located at the lower end of the second jig support spring member 630. When a part of the jig is inserted and the second upper jig member 620 is seated on the upper surface of the second lower jig member by the operation of the first jig pressing unit 500, the second jig supporting spring member 630 The whole is formed to a depth that can be inserted.

When the second upper jig member 620 is pressed by the operation of the first jig pressing unit 500, the second jig supporting spring member 630 is inserted into the second spring insertion part, and the second upper jig member 620 While the lower surface of is in close contact with the upper surface of the second lower jig member, the through portion 301 for molding the body of the garden is formed.

Another embodiment of the progressive molding apparatus for manufacturing a body according to the present invention further includes a jig horizontally moving part 700 for linearly moving the body molding jig 300 and the cone molding jig 600 in the left and right directions. can do.

The jig for body molding 300 and the jig for cone molding 600 are arranged on a straight line to be movable in the left and right directions on the jig base 400, It is moved to the right and can be selectively positioned to face the material for manufacturing a carbon body 10 coupled to the mandrel part 100.

One of the body molding jig 300 and the cone molding jig 600 faces the body manufacturing material 10 coupled to the mandrel part 100 by the operation of the jig horizontal moving part 700 It is positioned so that the second bullet body 12 may be formed or the cone body 13 may be formed.

The jig horizontal moving unit 700 passes through the jig unit 300 for body molding and the jig unit 600 for cone molding, and the screw rotation motor (not shown) rotates the moving screw 710 screwed together and the moving screw 710. City) is included as an example.

The jig horizontal moving unit 700 may be a hydraulic cylinder, in addition to a ball screw type linear actuator, a rack gear and a rack gear that converts the rotational force of the motor into linear movement by including a pinion gear engaged with the rack gear and rotated by the motor. As it can be variously modified and implemented using a known linear moving device such as a pinion structure, a more detailed description will be omitted.

The jig horizontal movement unit 700 positions the body molding jig 300 so that the body molding material 10 can pass through the body molding passage 301 of the body molding jig 300, and the cone The cone molding jig 600 may be positioned so that the front end of the material for manufacturing the body 10 may be inserted into the molding groove 601 .

Another embodiment of the progressive molding apparatus for manufacturing a body according to the present invention is the mandrel part 100 with the mandrel linear moving part 200 in a state in which the jig part 300 for body molding is pressed with the first jig pressing part 500 ) is moved forward to finely move the mandrel part 100 in a state where the mandrel part 100 is supported by the jig part 300 for body molding, while the material for manufacturing a carbon body coupled to the mandrel part 100 is moved forward. stretch the side

The front end of the material for manufacturing a bullet body 10, which is extended by the movement of the mandrel unit 100, is formed into the second bullet body portion 12 while passing through the through portion 301 for body molding, and the second bullet body portion ( When the molding of 12) is completed, the first jig pressing unit 500 is lifted to release the force that pressed the jig unit 300 for body molding, and the mandrel unit 100 is moved backward to release the jig unit 300 for body molding. ) Separate the material for manufacturing the body 10 from.

After the material for the body material is separated from the jig for body molding (300), the jig for body molding (300) and the jig for cone molding (600) are moved to the jig horizontally moving part (700) to move the cone molding groove (601). ) Position the cone molding jig 600 so that the front end of the material for manufacturing a body 10 can be inserted into the mandrel by moving the mandrel 100 forward with the mandrel linear moving unit 200, the mandrel ( 100) is inserted into the cone forming groove 601 to form the cone body portion 13.

Another embodiment of the gradual molding apparatus for manufacturing a bullet body according to the present invention forms the second bullet body part 12 using the body molding jig 300 and then uses the cone molding jig 600 to form the cone body. Forming the portion 13 can simplify the manufacturing process of the bullet body.

Figure 7 is a schematic diagram showing another embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention, referring to Figure 7, another embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention is a cone molding jig (600 ) is positioned on a straight line with the body molding jig 300 and the front end of the body molding material 10 passing through the body molding jig 300 is inserted into the cone at the front end of the carbon body manufacturing material 10 extended. The body portion 13 may be molded.

In addition, another embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention may further include a jig linear moving unit 800 for linearly moving the jig unit 600 for forming cones forward and backward.

The jig linear movement unit 800 is an example of a hydraulic cylinder, and in addition, a ball screw type linear actuator, a rack gear and a pinion gear meshed with the rack gear and rotated by the motor are included to convert the rotational force of the motor into linear movement. A more detailed description will be omitted as it can be variously modified and implemented using known linear movement devices such as rack and pinion structures.

In addition, another embodiment of the gradual molding apparatus for manufacturing a carbon body according to the present invention presses the upper part of the cone molding jig 600, that is, presses the second upper jig member 620 to press the second lower jig member 610 ) may further include a second jig pressing unit 900 that adheres to the top.

The second jig pressing unit 900 presses the upper surface of the second upper jig member 620, and the second pressing member 910 moves the second pressing member 910 up and down. One example is to include the device 920 .

The second elevating and descending device 920 for pressurization is an example of a hydraulic cylinder, and in addition to a ball screw type linear actuator, a rack gear and a pinion gear meshed with the rack gear and rotated by the motor, the rotational force of the motor is linearly moved. A more detailed description of the bar that can be variously modified and implemented using known lifting and lowering devices such as a rack and pinion structure that converts to a bar is omitted.

The jig base part 400 may be equipped with a first jig pressing part 500 and a second jig pressing part 900, and the first jig pressing part 500 and the second jig pressing part 900 are preset. It may further include an upper support frame structure 410 that allows it to be positioned at a height.

The first jig pressing part 500 and the second jig pressing part 900 are mounted on the upper support frame structure 410 as an example, and the jig part 300 for body molding and the jig part 600 for cone molding It should be noted that it may be mounted on a separate support structure positioned on the upper side of the , or may be installed using the ceiling of the room.

In addition, another embodiment of the gradual molding apparatus for manufacturing a body according to the present invention is a pressing unit moving device 1000 for moving the second jig pressing unit 900 forward and backward according to the position of the jig unit 600 for cone molding. can be further included.

As an example, the pressing unit moving device 1000 is mounted on the upper support frame structure 410 and linearly moves the second jig pressing unit 900 forward and backward.

The pressing unit moving device 1000 is a ball screw type linear actuator as an example, and in addition, a rack and a pinion gear that converts the rotational force of the motor into linear movement by including a rack gear and a pinion gear meshed with the rack gear and rotated by the motor A more detailed description is omitted as it can be variously modified and implemented using a known linear moving device such as a structure or a hydraulic cylinder.

The pressing part moving device 1000 moves the second jig pressing part 900 according to the position of the cone molding jig 600 moved by the jig linear moving part 800 to move the second jig pressing part 900. The position is adjusted so that the cone molding jig 600 can be stably pressed.

Although the second jig pressing unit 900 is not shown, it is connected to the second lower jig member 610 of the cone molding jig 600 in a connecting frame structure and moves integrally with the cone molding jig 600. Note that you may have

The cone molding jig 600 is positioned to be spaced apart from the body molding jig 300 on a straight line, and is moved back and forth by the jig linear moving part 800 to pass through the body molding jig 300. The cone body portion 13 may be formed on the front end side of the manufacturing material 10 , that is, the molded second bullet body portion 12 .

In addition, the cone molding jig 600 is moved back and forth by the jig linear moving unit 800, and the position is adjusted according to the length of the pre-designed second body part 12, and the mandrel part 100 The cone body portion 13 is inserted into the cone forming groove portion 601, elongated by the body forming jig 300, and the material for manufacturing the bullet body 10, that is, the tip side of the molded second bullet body portion 12 is inserted into the cone forming groove portion 601. ) can be molded.

On the other hand, in the method for manufacturing a bullet body according to the present invention, the first bullet body portion 11, the second bullet body portion located at the front end side of the first bullet body portion 11 and having a smaller diameter than the first bullet body portion 11 (12), a bullet body manufacturing method for manufacturing a bullet body including a cone body portion 13 located at the front end side of the second bullet body portion 12 and having a cone shape.

The method for manufacturing a bullet body according to the present invention includes a billet preparation step of heating and preparing a cylindrical bullet body material 10 having the same outer diameter as the first bullet body 11 so that gradual molding is possible, and after the bullet body manufacturing material 10 Progressive molding preparation step of horizontally positioning the material for manufacturing a body 10 by inserting a mandrel part 100 capable of linear movement in the front and rear directions at the end side, forward movement of the mandrel part 100 to make a material for manufacturing a body 10 The bullet body forming the second bullet body 12 by gradually elongating the front end side of ) and passing the elongated front end side through the body molding passage 301 located in the body molding jig 300. It is characterized in that it comprises a secondary molding step.

In addition, the method for manufacturing a bullet body according to the present invention forms the second bullet body portion 12 on the tip side of the bullet body manufacturing material 10 in the bullet body forming step, and then forms the tip side of the second bullet body portion 12. A cone forming step of forming the cone body portion 13 by inserting the mandrel portion 100 into the cone forming groove portion 601 of the cone forming jig portion 600 while gradually extending the mandrel portion 100 forward is further included.

The billet preparation step may further include a mandrel insertion part forming process of forming a mandrel insertion part into which the mandrel part 100 can be inserted on one surface of the rear end side of the carbon body manufacturing material 10.

In the bullet body part forming step and cone forming step, while the mandrel part 100 is moved forward minutely in a state where the end side of the body forming material 10 is supported on one surface of the jig 300 for body forming, the material for manufacturing the bullet body The end side of (10) is extended, and the second body portion 12 having a small diameter is molded by passing the extended portion through the through portion 301 for body forming of the body forming jig 300, The cone body 13 is molded by inserting a portion extending from the front end of the second body 12 into the cone forming groove 601 of the cone forming jig 600 located therein.

The present invention reduces the manufacturing cost of the body and the maintenance cost of the forming device by shaping the body by gradual forming using the free forging method.

The present invention simplifies the manufacturing process of the bullet body by molding the body portion and the cone portion of the distal end of the bullet body together.

In the present invention, the depth of gunpowder filling in the bullet body can be easily checked through the depth into which the mandrel part 100 is inserted.

It is to be noted that the present invention is not limited to the above-described embodiments, but can be variously modified and implemented without departing from the gist of the present invention, which is included in the configuration of the present invention.

10: material for manufacturing bullet body 11: first bullet body
12: 2nd body part 13: cone body part
100: mandrel part 200: mandrel linear moving part
300: jig for body molding 301: passage for body molding
301a: first body forming part 301b: second body forming part
310: first lower jig member 311: first spring insertion part
320: first upper jig member
330: spring member for supporting the first jig
400: jig base part 410: upper support frame structure
500: first jig pressing unit 510: first pressing member
520: elevating device for first pressurization 600: jig for cone molding
601: cone molding groove 610: second lower jig member
611: second spring insertion part 620: second upper jig member
630: second jig support spring member 700: jig horizontally moving part
710: moving screw 800: jig linear moving part
900: second jig pressing part 910: second pressing member
920: lifting device for the second pressurization 1000: moving device for the pressing part

Claims (19)

As a gradual molding apparatus for manufacturing a carbon body by molding a heated cylindrical material for manufacturing a carbon body,
a mandrel part of which is inserted into the interior of the material for production of the carbon body at one end side of the material for production of the carbon body;
a mandrel linear moving unit for extending the front end of the material for producing the carbon body by moving the mandrel unit forward and backward; and
A jig for body molding having a passage for body molding through which the material for manufacturing a body moving forward by the operation of the mandrel linear moving unit passes, and reducing the diameter of the material for manufacturing a body,
The jig for forming the body,
a first lower jig member on an upper surface of which a first passage part forming a part of the passage part for forming the body is located;
a first upper jig member on a lower surface of which a second passage part forming a remaining part of the passage part for forming the body is located; and
A first jig support spring member positioned between the first lower jig member and the first upper jig member to elastically support the first upper jig member so as to be spaced apart from the first lower jig member. Characterized by a gradual molding apparatus for manufacturing a body.
delete The method of claim 1,
Progressive molding apparatus for manufacturing a body, characterized in that it further comprises a first jig pressing portion for pressing the first upper jig member.
The method of claim 3,
A first spring insertion portion into which the spring member for supporting the first jig is inserted is positioned on an upper surface of the first lower jig member, and a portion of the lower end of the spring member for supporting the first jig is inserted into the first spring insertion portion. , When the first upper jig member is seated on the upper surface of the first lower jig member by the operation of the first jig pressing unit, the entire spring member for supporting the first jig is formed to a depth into which it can be inserted. Characterized by a gradual molding apparatus for manufacturing a body.
The method of claim 1,
The passage part for body molding,
A first body forming part located on the inlet side and having a smaller diameter toward the outlet side; and
Gradual molding apparatus for manufacturing a body, characterized in that it comprises a second body forming part formed with the same diameter from the exit side end of the first body forming part to the exit.
The method of claim 1,
Further comprising a cone molding jig for molding a cone body having a cone shape on the end side of the elongated carbon body manufacturing material,
The jig for cone molding,
Progressive molding apparatus for manufacturing a carbon body, characterized in that the cone forming groove portion formed in a cone shape by inserting the material for manufacturing the carbon body, which is extended by the forward movement of the mandrel part, is positioned in an open form toward the material for manufacturing the carbon body.
The method of claim 6,
The jig for cone molding,
a second lower jig member having a first shaping groove portion forming a part of the cone shaping groove portion on an upper surface thereof;
a second upper jig member having a second shaping groove portion forming a remaining portion of the cone shaping groove portion on a lower surface thereof; and
A second jig support spring member positioned between the second lower jig member and the second upper jig member to elastically support the second upper jig member so as to be spaced apart from the second lower jig member. Characterized by a gradual molding apparatus for manufacturing a body.
The method of claim 7,
A second spring insertion portion into which the spring member for supporting the second jig is inserted is positioned on the upper surface of the second lower jig member, and a portion of the lower end of the spring member for supporting the second jig is inserted into the second spring insertion portion. When the second upper jig member is pressed and seated on the upper surface of the second lower jig member, the entire spring member for supporting the second jig is formed to a depth into which it can be inserted. Device.
The method of claim 7,
Progressive molding apparatus for manufacturing a body, characterized in that it further comprises a second jig pressing unit for pressing the second upper jig member and bringing it into close contact with the second lower jig member.
The method of claim 7,
The progressive molding apparatus for manufacturing a body, characterized in that it further comprises a jig horizontal movement unit for linearly moving the body molding jig and the cone molding jig in left and right directions.
The method of claim 10,
Further comprising a jig base portion to which the body molding jig portion and the mandrel linear moving portion are mounted,
The body molding jig and the cone molding jig are disposed on a straight line to be movable in left and right directions on the jig base, and are moved left and right by the jig horizontally moving part to be coupled to the mandrel Gradual molding apparatus for manufacturing a carbon body, characterized in that it is selectively positioned to face the material for manufacturing the carbon body.
The method of claim 11,
Further comprising a first jig pressing portion for pressing the first upper jig member,
The second upper jig member is pressed by the first jig pressing unit so that the lower surface is in close contact with the upper surface of the second lower jig member.
The method of claim 7,
The jig for cone molding is located on a straight line with the jig for forming the body, and the tip of the material for manufacturing the body through which the jig for forming the body is inserted is inserted to form the cone body at the front end of the material for manufacturing the body, which is extended. Characterized by a gradual molding apparatus for manufacturing a body.
The method of claim 13,
Progressive molding apparatus for manufacturing a body, characterized in that it further comprises a jig linear moving unit for linearly moving the cone forming jig unit forward and backward.
The method of claim 14,
Progressive molding apparatus for manufacturing a body, characterized in that it further comprises a second jig pressing unit for pressing the second upper jig member and bringing it into close contact with the second lower jig member.
The method of claim 15
The progressive molding apparatus for manufacturing a body, characterized in that it further comprises a pressing unit moving device for moving the second jig pressing unit forward and backward according to the position of the cone molding jig unit.
A first body portion, a second body portion located at the front end side of the first body portion and having a smaller diameter than the first body portion, and a cone body portion located at the front end side of the second body portion and having a cone shape. It is a method of manufacturing a carbon body for producing a carbon body,
A billet preparation step of heating and preparing a material for manufacturing a cylindrical body having the same outer diameter as the first bullet body so that gradual molding is possible;
A gradual forming preparation step of horizontally positioning the material for production of the carbon body by inserting a mandrel capable of linear movement in forward and backward directions at the rear end of the material for production of the carbon body;
A bullet body for forming the second bullet body by moving the mandrel forward to gradually elongate the distal end of the material for manufacturing the projectile, and passing the elongated distal end through the through-hole for body shaping located in the body shaping jig. A method for manufacturing a carbon body, characterized in that it comprises a secondary molding step.
The method of claim 17
In the bullet body forming step, after molding the second bullet body on the front end side of the material for manufacturing the bullet body, insert the cone molding jig into the cone molding groove while gradually extending the front end of the second bullet body toward the forward movement of the mandrel. A method for manufacturing a carbon body, characterized in that it further comprises a cone forming step of forming the cone body portion by doing so.
The method of claim 17
The billet preparation step further comprises a mandrel insertion part forming process for forming a mandrel insertion part into which the mandrel part can be inserted on one surface of the rear end side of the material for production of the carbon body.

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