KR20240049890A - 4-directional simultaneous forging device - Google Patents

Abstract

The four-way simultaneous forging device according to an embodiment of the present invention includes a lower support part installed on the upper part of the base, an inclined surface formed on the upper part of the lower support part, an inclined surface formed from both ends to the lower center side, and an upper support part in the center. A lower holder that protrudes and forms a fixed end on which a pressure hammer is installed, an upper support part that moves up and down on the upper part of the lower support part, and an inclined surface is formed from both ends to the upper part of the center side, installed in the lower part of the upper support part, and the lower part in the center. An imaginary line direction formed by the upper holder, which protrudes in the direction to form a fixed end on which the pressure hammer is installed, and the pressure hammers installed on the lower holder and the upper holder when the upper support is lowered, disposed between the inclined surface of the lower holder and the upper holder. It includes a side holder that moves in and a side press hammer installed on a surface in an imaginary line direction of the side holder, and the press hammer and the side press hammer form a step.

Description

4-DIRECTIONAL SIMULTANEOUS FORGING DEVICE}

The present invention relates to a forging device, and specifically to a four-way simultaneous forging device that performs a forging process without replacing a separate hammer according to the volume reduction of the material.

In general, radial forging of long bar-shaped workpieces is performed by a multi-directional simultaneous forging device consisting of four dies.

This multi-directional simultaneous forging device is configured to forge the workpiece while interconnecting four dies positioned in four symmetrical radial directions of the workpiece.

Here, two of the four dies include an upper die and a lower die, respectively located at the upper and lower sides, and side dies located on both sides, where the two side dies are the upper and lower dies. It is configured to perform forging work by moving in opposite directions in conjunction with the movement. This multi-directional simultaneous forging device is the same as disclosed in Patent Publication No. 10-2006-0069506, Patent Publication No. 10-2010-0014060, and Patent Publication No. 10-2013-0132738.

In the forging device according to the prior art, if the hammer installed in the forging process reduces the volume of the workpiece to the extent that the installed hammer can reduce it, the hammer must be replaced and forging must be performed in order to transform the workpiece to a specified volume. Therefore, in order to replace the hammer, the installed hammer must be cooled to a replaceable temperature before replacing the hammer, which causes a decrease in productivity due to hammer replacement. In addition, when replacing the hammer, the workpiece is cooled and the temperature of the workpiece must be raised again. .

Republic of Korea Public Patent No. 10-2006-0069506 (published on June 21, 2006)

The four-way simultaneous forging device according to the present invention is intended to change the volume of the workpiece without replacing the hammer.

In addition, it is intended to be able to easily discharge slug generated from the workpiece during forging of the workpiece.

In addition, it is intended to lubricate the rails on which the hammer moves during the forging process.

In addition, it is intended to ensure that forging can be performed smoothly by preventing the temperature of the workpiece from lowering during the forging process.

The four-way simultaneous forging device according to an embodiment of the present invention includes a lower support part installed on the upper part of the base, an inclined surface formed on the upper part of the lower support part, an inclined surface formed from both ends to the lower center side, and an upper support part in the center. A lower holder that protrudes and forms a fixed end on which a pressure hammer is installed, an upper support part that moves up and down on the upper part of the lower support part, and an inclined surface is formed from both ends to the upper part of the center side, installed in the lower part of the upper support part, and the lower part in the center. An imaginary line direction formed by the upper holder, which protrudes in the direction to form a fixed end on which the pressure hammer is installed, and the pressure hammers installed on the lower holder and the upper holder when the upper support is lowered, disposed between the inclined surface of the lower holder and the upper holder. It includes a side holder that moves in and a side press hammer installed on the side of the side holder in an imaginary line direction.

The pressure hammer and the side pressure hammer of the four-way simultaneous forging device according to an embodiment of the present invention form a step, and the pressure hammer and the side pressure hammer are an inclined guide surface that induces entry of the workpiece, extending from one end of the inclined guide surface. It is preferable to include a first pressure ledge and a second pressure ledge protruding and extending from the first pressure ledge.

An inclined rail groove is formed on the inclined surface of the four-way simultaneous forging device according to an embodiment of the present invention, a rail is coupled to the inclined surface rail groove, and a sliding plate with a plate rail groove into which the rail is inserted is coupled to one side of the side holder. Preferably, a lubricant supply pipe for supplying a lubricant that reduces friction between the plate rail groove and the rail is disposed at the upper part of one side of the inclined surface.

It is preferable that a combustion gas injection nozzle for increasing the temperature of the workpiece is disposed on the surface of the virtual line direction of the side holder of the four-way simultaneous forging device according to an embodiment of the present invention.

A slug chute for discharging slug generated during forging of a workpiece is formed between the inclined surface of the lower holder of the four-way simultaneous forging device according to an embodiment of the present invention and the fixed end of the lower support, and the slug chute is located at the bottom of the lower holder. It is desirable to have a slope towards the front or back.

It is preferable that the pressure hammer and the side pressure hammer of the four-way simultaneous forging device according to an embodiment of the present invention form an inclined surface from one direction to the other or form an arc-shaped groove in the inner direction.

The four-way simultaneous forging device according to the present invention has the effect of being able to change the volume of the workpiece without replacing the hammer between processes by employing a hammer in which a node is formed.

In addition, by forming a slug chute in the lower holder, there is an effect that slug generated from the workpiece during forging of the workpiece can be discharged through the slug chute.

In addition, there is an effect of increasing the durability of the forging device by installing a lubricant supply pipe on the inclined surface where the rail is placed so that the rail, etc., on which the hammer moves during the forging process can be lubricated.

In addition, by installing a combustion gas injection nozzle on the side holder to prevent the temperature of the workpiece from lowering during the forging process, forging can be performed while maintaining the temperature of the workpiece.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below.

Figure 1 is a perspective view of a four-way simultaneous forging device according to an embodiment of the present invention.
Figure 2 is a perspective view of the upper holder of the four-way simultaneous forging device shown in Figure 1.
Figure 3 is a perspective view of the lower holder of the four-way simultaneous forging device shown in Figure 1.
Figure 4 is a cross-sectional view of the fixed end and pressure hammer of the four-way simultaneous forging device shown in Figure 2.
Figure 5 is a conceptual diagram of the operation of a four-way simultaneous forging device according to an embodiment of the present invention.
Figure 6 is a perspective view of the main part of the lower holder of the four-way simultaneous forging device in Figure 1.
Figure 7 is a perspective view of the side holder of the four-way simultaneous forging device in Figure 6.
Figure 8 is a cross-sectional view and a perspective view of a pressure hammer according to another embodiment of the present invention.

Preferred embodiments according to the present invention will be described in detail with reference to the attached drawings, but identical or similar components will be assigned the same reference numbers regardless of the reference numerals, and duplicate descriptions thereof will be omitted.

Additionally, when describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted. In addition, it should be noted that the attached drawings are only intended to facilitate easy understanding of the spirit of the present invention, and should not be construed as limiting the spirit of the present invention by the attached drawings.

Hereinafter, a four-way simultaneous forging device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.

Referring to Figure 1, which is a perspective view of a four-way simultaneous forging device (hereinafter referred to as 'forging device') according to an embodiment of the present invention, a lower support part 100, a lower holder 110, an upper support part 200, an upper It consists of a holder 210 and a side holder 300. Pressing hammers 114a and 214a that pressurize and deform the workpiece are installed in the upper holder 110 and lower holder 210, and the side holder 300 It consists of a side pressurizing hammer (310).

The lower support part 100 supports the lower holder 110 and is installed on the upper part of the base to firmly support the forging device.

The upper part of the lower support part 100 installed on the upper part of the base has an inclined surface 112 from both ends to the lower central side as shown in Figure 1 and Figure 3, which is a perspective view of the lower holder of the four-way simultaneous forging device shown in Figure 1. is formed, and a lower holder 110 is disposed in the center, which protrudes upward and has a fixed end 114 on which the pressure hammer 114a is installed.

The inclined surface 112 is a surface that moves the side holder 300 when the upper holder 210 is moved, and the fixed end 114 is an end where the pressure hammer 114a is installed at the upper end.

The upper support part 200 moves up and down at the upper part of the lower support part 100, and an upper holder 210 is installed at the lower part.

The upper holder 210 has an inclined surface 212 formed from both ends to the upper center side, and a fixed end 214 protruding downward in the center on which the pressure hammer 214a is installed is formed, so that the lower holder 110 and It has a similar composition.

The inclined surface 112 of the lower holder 110 and the inclined surface 212 of the upper holder 210 are formed in shapes corresponding to mutually corresponding positions, so that the side holder 300 can move along the inclined surfaces 112 and 212. It is structured so that

The side holder 300 is disposed between the inclined surfaces 112 and 212 of the lower holder 110 and the upper holder 210 and pressurizes the lower holder 110 and the upper holder 210 when the upper support 200 is lowered. It moves in the direction of the virtual line formed between the hammers 114a and 214a.

A side pressing hammer 310 is installed on the side of the side holder 300 in the virtual line direction. Therefore, when the upper holder 210 moves in the direction of the lower holder 110, the side holder 300 moves along the inclined surfaces 112 and 212.

At this time, as described above, the pressure hammers 114a and 214a installed on the fixed end 114 of the lower holder 110 and the fixed end 214 of the upper holder 210, and the side pressure hammer 310 of the side holder 300. move close to each other and pressurize the workpiece to reduce the volume of the workpiece.

At this time, the pressure hammers 114a, 214a and the side pressure hammer 310 may have a flat pressure surface for pressing the workpiece, but the pressure hammers 114a, 214a and the side pressure hammer 310 according to the present embodiment ) can be formed to form steps to sequentially reduce the cross-section of the workpiece according to each process.

The upper support part 200, which moves up and down on the lower support part 100, can be configured in various forms, but in this embodiment, as shown in Figure 1, a lifting guide member formed on both sides of the lower support part 100 ( 130) can be formed, the lifting guide member 130 can be disposed by penetrating the upper support part 200, and the return elastic body 132 can be placed on the outer surface of the lifting guide member 130.

Since the pressure hammers 114a and 214a and the side pressure hammer 310 according to the present invention are formed in the same shape, the pressure hammer 114a installed on the fixed end 114 of the lower holder 110 is taken as an example in the following in FIG. 2. The description will be made with reference to FIG. 4, which is a cross-sectional view of the fixed end and pressure hammer of the illustrated four-way simultaneous forging device.

The pressure hammer 114a includes an inclined guide surface 114a1 that induces the entry of the workpiece, a first pressure ledge 114a2 extending from one end of the inclined guide surface 114a1, and a second pressure ledge 114a2 protruding and extending from the first pressure ledge 114a2. It is formed as a pressure jaw (114a3).

That is, the outer surface of the workpiece transferred through the inclined guide surface 114a1 is transformed to the first (1s) using the first pressure ledge (114a2), reduced again, and secondly (2s) to the second pressure ledge ( Reduce using 114a3).

In addition, according to the embodiment, the workpiece can be reduced three times by forming a third pressure shoulder 114a4 extending from the second pressure shoulder 114a3.

That is, when the pressure hammer 114 is composed of the first pressure ledge 114a2, the second pressure ledge 114a3, and the third pressure ledge 114a4, as shown in FIG. 5, the first (1s), the second The workpiece (m) can be sequentially pressurized and deformed in (2s) and three (3s) times.

The pressure hammer 114a, which consists of a plurality of pressure jaws 114a2, 114a3, and 114a4, may be fixed to the fixed end 114 with a fixture such as a bolt, but the pressure hammer 114a is simply fixed to the fixed end 114. In this case, the pressure hammer 114a and the fixed end 114 may be damaged during the repeated forging process. Therefore, as shown in FIG. 4, the pressure hammer 114a is fixed to the fixed end 114 using a separation prevention member f bent in an 'L' shape, and a seating groove ( 114b) is formed, and a cushion block 114d in contact with the pressure hammer 114 is disposed inside the seating groove 114, and a shock-absorbing elastic body 114c is placed between the inner surface of the seating groove 114b and the cushion block 114d. It can be configured to absorb the impact applied to the pressure hammer (114a) by arranging it. At this time, the cushion block 114d is fixed through a cushion fixture 114e that penetrates the shock-absorbing elastic body 114c and is coupled to the bottom of the seating groove 114b of the fixed end 114.

Referring to Figure 6, which is a perspective view of the main part of the lower holder of the four-way simultaneous forging device in Figure 1, the inclined surface along which the side holder 300 moves is the inclined surface 112 formed on the lower holder 110 and the upper holder 210. An inclined surface 212 is formed.

As shown in FIGS. 2, 3, and 6, inclined surface rail grooves 112a are formed in the inclined surface 112 in the inclined direction, and rails 112b and 212b are disposed on the inclined surface rail grooves 112a and 212a.

These rails (112b, 212b) are inserted into the sliding plate 320 in which the plate rail groove 322 is formed into which the rails 112b, 212b are inserted, and the sliding plate 320 is coupled to one side of the side holder 300. . Therefore, when the lower holder 110 and the upper holder 210 move downward, the side holder 300 moves along the rails 112b and 212b.

At this time, as shown in FIGS. 2 and 6, on one upper part of the inclined surfaces 112 and 212, there is a lubricant supply pipe 120 that supplies lubricant to reduce friction between the plate rail groove 322 and the rails 112b and 212b. 220) is disposed to allow the side holder 300 to move more smoothly. Lubricant may be supplied through these lubricant supply pipes 120 and 220 when the upper holder 210 moves more than a certain number of times.

In addition, side holders 112c can be placed on the front and rear surfaces of the inclined surfaces 112 and 212 to prevent the side holders 300 from being separated from the inclined surfaces 112 and 212.

As shown in FIG. 7 , a combustion gas injection nozzle 330 that increases the temperature of the workpiece may be disposed on the side of the side holder 300 in the virtual line direction. When hot forging a workpiece, it is desirable to maintain the temperature of the workpiece during the processing process. Therefore, it is desirable to form combustion gas injection nozzles 330 on the side holder 300 as in this embodiment to increase the temperature when the temperature of the workpiece or the predetermined temperature falls below.

During forging, slugs are generated in the workpiece. Since these slugs have a high temperature, they can damage the forging equipment, so it is desirable to quickly remove them from the forging equipment. Therefore, it is desirable to form a slug chute 116 in the lower holder 110 to discharge slug generated during forging of the workpiece. Since these slugs are generally generated on the surface where the pressurizing hammers 114a and 214a that perform forging come into contact with the fixed object, a slug chute 116 is installed between the inclined surface 112 and the fixed end 114 of the lower support 100. It is desirable to form This slug chute 116 is preferably formed with an inclination toward the front or rear of the lower holder 110.

Referring to Figure 8(a), which is a cross-sectional view of a pressure hammer according to another embodiment of the present invention, and Figure 8(b), a perspective view of a pressure hammer according to another embodiment of the present invention, the pressure hammer 114a has a pressure surface. It can be formed with an inclination from one side to the other side, that is, from the direction in which the workpiece flows in to the direction in which the workpiece is discharged, so that the pressure applied to the workpiece can be sequentially increased.

In addition, as shown in (b) of FIG. 8, the cross-section of the workpiece may be circular by forming it into an arc shape, which is the shape of the workpiece being processed. In this case, there is an advantage that it is easier to process it into a rod shape.

Above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to the specific embodiments and should be interpreted in accordance with the appended claims. Additionally, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

100: lower support 110: lower holder
112: slope 112a: slope rail groove
112b: Rail 112c: Slide guide member
114: fixed end 114a: pressurized hammer
114a1: Inclined guide surface 114a2: First pressure jaw
114a3: Second pressure jaw 114a4: Third pressure jaw
114b: Seating groove 114c: Shock-absorbing elastic body
114d: cushion block 114e: cushion fixture
116: Slug chute 120: Lubricant supply pipe
130: Elevating side member 132: Return elastic body
200: upper support 210: upper holder
212: slope 212a: slope rail groove
212b: Rail 212c: Slide guide member
214: fixed end 214a: pressurized hammer
220: Lubricant supply pipe
300: Side holder 310: Side press hammer
320: sliding plate 322: plate rail groove
330: Combustion gas injection nozzle
f: separation prevention member m: workpiece

Claims (6)

A lower support part installed on the upper part of the base;
a lower holder installed on the upper part of the lower support unit, having an inclined surface formed from both ends to the lower center side, and a fixed end protruding upward in the center on which a pressure hammer is installed;
an upper support part moving up and down on the upper part of the lower support part;
An upper holder installed below the upper support unit, having inclined surfaces formed from both ends to the upper center side, and having a fixed end protruding downward in the center on which a pressure hammer is installed;
a side holder disposed between the inclined surfaces of the lower holder and the upper holder and moving in the direction of an imaginary line formed by pressure hammers installed on the lower holder and the upper holder when the upper support part is lowered;
A four-way simultaneous forging device including a side press hammer installed on the side of the side holder in the virtual line direction.
According to paragraph 1,
The pressure hammer and the side pressure hammer form a step,
The pressure hammer and the side pressure hammer are
A four-way simultaneous forging device comprising an inclined guide surface for guiding the entry of a workpiece, a first pressure ledge extending from one end of the inclined guide surface, and a second pressure ledge protruding and extending from the first pressure ledge.
According to paragraph 1,
An inclined rail groove is formed on the inclined surface,
A rail is coupled to the inclined surface rail groove,
A sliding plate having a plate rail groove into which the rail is inserted is coupled to one side of the side holder,
A four-way simultaneous forging device, characterized in that a lubricant supply pipe for supplying a lubricant that reduces friction between the plate rail groove and the rail is disposed on one upper side of the inclined surface.
According to paragraph 1,
A four-way simultaneous forging device, characterized in that a combustion gas injection nozzle for increasing the temperature of the workpiece is disposed on the surface of the side holder in the virtual line direction.
According to paragraph 1,
A slug chute is formed between the inclined surface of the lower holder and the fixed end of the lower support portion to discharge slug generated during forging of the workpiece,
The slug chute is a four-way simultaneous forging device characterized in that it has an inclination toward the front or rear of the lower holder.
According to paragraph 1,
The pressure hammer and the side pressure hammer are
A four-way simultaneous forging device characterized by forming an inclined surface from one side to the other side or forming an arc-shaped groove in the inner direction.

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