KR20070033118A - Combined forging press using mechanical and hydraulic System - Google Patents

Abstract

A combined forging system capable of casting and forging the rheology material by controlling a molding rate and a molding pressure of a rheology material with fine grains and a uniform spheroidized structure according to the shape of a product is provided. A combined forging system comprises: a lower mold(8) fixed onto a frame; an upper mold(7) which is connected to the lower mold, and in which a cavity for molding a material is formed; a drive motor(5) of which the number of revolutions is controllable; a first pressing unit(F1) for primarily pressing the upper mold to the lower mold by converting a rotary power of the drive motor into a straight motion; and a molding control cylinder(4) installed in a lower part of a conversion means to further press the upper mold by hydraulic pressure until the material is solidified in a state that the molding control cylinder is pressed by the conversion means, wherein a product with superior mechanical properties is manufactured by allowing the cylinder to press the material until the material is solidified in a state that the cylinder is pressed by the first pressing unit.

Description

Combined forging press using mechanical and hydraulic system

1 is an illustration of a first embodiment of the forging apparatus of the present invention.

Figure 2 is an illustration of a second embodiment of the forging apparatus of the present invention.

Figure 3 is an illustration of a third embodiment of the forging apparatus of the present invention.

Figure 4 is an illustration of a locking device used in the forging device of the present invention.

5 is an exemplary view of a mechanical drive unit of the forging device of the present invention.

6 is a hydraulic circuit diagram for driving the present invention forging device.

Explanation of symbols on the main parts of the drawings

1: hydraulic pump 2: drive wheel

3: crank 4: forming control cylinder

5: brake motor 6: accumulator

7: upper mold 8: lower mold

9: upper platen 10: lower platen

11: ejection cylinder 13: plunger

14: mold opening and closing cylinder 15: lock lever

16: sleeve

The present invention relates to a complex forging apparatus capable of casting and forging using a material such as aluminum (Al), magnesium (Mg), the crystal grains supplied in a fixed amount, more specifically, fine grains and uniform spheroidization The present invention relates to a composite forging apparatus capable of casting and forging rheology by controlling molding speed and molding pressure according to the shape of a product using a rheology material having a structure.

In the conventional rheology casting, the range of solid phase which can be manufactured is limited, and in general, it is possible to manufacture up to solid phase of 0 to 0.5. In recent years, due to the diversification and advancement of material performance, many production apparatuses and manufacturing techniques of rheologic materials have been developed. Among them, one of the attentions is casting and forging processes using rheology materials.

The casting and forging process using rheology materials refers to materials in which fine and spherical solid phases and liquid phases coexist by inhibiting growth of dendrite using mechanical, electromagnetic, ultrasonic, and gradient cooling methods while solidifying molten metal. Manufactured and applied to casting and forging processes. In addition, since the process has a higher viscosity than the general molten metal, laminar flow may be generated in the mold, and the molding temperature is low, thereby extending the mold life and reducing the cycle time. In addition, there is an advantage having excellent mechanical properties due to the fine and spherical microstructure. As such, research on manufacturing a rheology material with controlled grains has been actively conducted, but research on a molding apparatus is weak.

In general, Leopard material has a low solidity (0 ~ 0.5) because the casting is made because the solidification time is long, and the casting defect occurs according to the low mechanical properties. Therefore, there is a demand for development of equipment capable of molding at a high solids ratio (0.5 to 1) as well as a low solid ratio using a rheology material.

It is impossible to mold with existing equipment to apply the casting and forging process at low and high solids using rheology materials. Conventional die casting equipment is not possible to form a high solids rheology material, the existing forging device is impossible to form a low solids rheology material. Therefore, in order to cast and forge at low and high solids, it is necessary to develop new molding equipment. Control of molding speed, molding pressure and molding time is essential for molding rheology materials.

SUMMARY OF THE INVENTION An object of the present invention is to provide a forging apparatus capable of casting and forging capable of controlling molding speed and molding pressure by using a nonferrous lightweight rheology material such as aluminum or magnesium having fine grains and uniform spherical texture. .

Another object of the present invention is to apply a method that requires pressurization during the solidification time of the metal, that is, for squeeze casting, thixo casting, rheology casting, forging apparatus capable of maintaining pressurization after molding that is impossible in the conventional forging press Is to provide. Therefore, since a pressure is applied during solidification, defects such as shrinkage holes and the like can be removed, and a product having excellent mechanical properties can be obtained due to a more dense microstructure.

Still another object of the present invention is to provide a closed type forging device which can directly press the rheology material into the upper mold by injecting the rheology material into the lower mold in the upper mold and the lower mold open state. Due to such a method, the molding load is lower than the cold forging and the hot forging, and the filling property is excellent and the mold life can be extended.

Still another object of the present invention is to provide a forging apparatus capable of injecting a rheology material in a closed state of the upper mold and the lower mold and pressing the plunger mounted on the upper platen. This forging device provides less flow defects, better mechanical properties, and shorter cycle times compared to squeeze casting, low pressure casting and gravity casting.

In the present invention, the composite forging device as described above, by using a mechanical method to press the material primarily to the upper mold, and to press the material by using a hydraulic method secondary technology It is based on ideas.

The apparatus of the present invention based on the technical idea, can be used for both forging and casting, it is possible to implement a forging device that can be molded regardless of the range of solidity from high solidity to low solidity . In addition, it is possible to implement a forging device that can be widely used in cold forging, hot forging, molten forging, thixo casting and forging, rheology casting and forging.

The rheology casting forging composite forging apparatus according to the present invention for achieving the above object is a forging device having an upper mold and a lower mold having a cavity for forming a material therein; A first pressurizing device which pressurizes the upper mold mechanically to pressurize the material put into the lower mold; In the pressurized state of the first pressurizing device, the technical gist of the present invention includes a second pressurizing device for pressurizing the upper mold by hydraulic pressure until the material is solidified.

And the composite forging device according to an embodiment of the present invention, the lower mold fixed to the frame; An upper mold coupled to the lower mold to form a cavity for forming a material therein; A drive motor capable of controlling the rotation speed; Converting means for converting the rotational force of the drive motor into linear motion to pressurize the upper mold against the lower mold; It is provided in the lower part of the said conversion means, and it is comprised including the molding control cylinder which pressurizes the said upper mold by hydraulic pressure until a raw material solidifies in the state pressurized by the said conversion means.

And according to the embodiment for the conversion means, the driving wheel rotated by the drive motor; A crank mechanism for converting the rotational movement of the drive wheel into a linear movement; The molding control cylinder is installed at the lower end of the crank mechanism, and the upper mold is installed under the molding control cylinder to pressurize the lower mold.

And it may further include an eject pin to penetrate the lower mold, and the ejection cylinder for raising and lowering the eject pin.

Complex forging apparatus according to another embodiment of the present invention, the lower mold fixed to the frame; An upper mold which forms a cavity for forming a material between the lower mold and is movable up and down; Fastening means capable of maintaining the lower mold and the upper mold in a fastened state; A sleeve installed in the upper mold; A plunger inserted into the sleeve to pressurize the material; First pressing means for pressing the material by lowering the plunger into the sleeve; And a second pressurizing means for further pressurizing the raw material until solidifying using the plunger in the pressurized state of the first pressurizing means.

And according to the embodiment for the fastening means, the mold opening and closing cylinder including a shaft which is operated by hydraulic pressure, the protrusion is formed in the lower portion, the lower end has an inclined lower inclined portion; A through hole of the upper mold having a stepped portion to which the protrusion of the shaft is caught; A horizontal moving member having an inclined portion at the inner end portion which is in contact with the lower slope portion and inserted into a horizontal through hole of a lower mold to move in a horizontal direction; The outer end portion and the lower end portion of the horizontal movable member are in contact with the frame pivotally connected by the support shaft, the inner end portion is composed of a locking lever having a locking portion that is caught on the locking jaw of the upper mold.

The first pressurizing means includes a drive motor, a drive wheel that is rotated by the drive motor, and a crank mechanism that converts the rotational movement of the drive wheel into a linear motion, wherein the crank mechanism lowers the plunger, It is configured to pressurize the material through.

The second pressing means is constituted by a molding control cylinder provided at the lower end of the crank mechanism.

Complex forging apparatus according to another embodiment of the present invention, the lower mold fixed to the frame; An upper mold which forms a cavity for forming a material between the lower mold and is movable up and down; After the material is put into the lower mold, the upper mold is lowered and engaged with the lower mold to engage, the pressing and fastening means for pressing the material; A sleeve installed in the upper mold; A plunger inserted into the sleeve to pressurize the material; First pressing means for pressing the material by lowering the plunger into the sleeve; And a second pressurizing means for further pressurizing the material until solidification using the plunger in the pressurized state of the first pressurizing means.

Hereinafter, with reference to the embodiment shown in the drawings will be described in detail the operation of the forging composite forging device of rheologic material according to the present invention.

As shown in FIG. 1 showing the composite forging apparatus according to the first embodiment of the present invention, the composite forging apparatus of the present invention is applied to a material injected into a cavity formed between an upper mold 7 and a lower mold 8. And a first pressurizing device F1 for mechanically applying primary pressure to the first press, and a second pressurizing device F2 for applying hydraulically secondary pressure in a state of being pressurized by the first pressurizing device F1. .

The first pressing device (F1) is for pressing the material injected into the cavity formed between the upper mold (7) and the lower mold (8), in the illustrated embodiment the lower mold (8) in a fixed state By moving the upper mold 7 downward with respect to), the rheology material in the state injected into the cavity is primarily pressed. The first pressing device F1 is configured to press the upper mold 7 in a mechanical manner.

First, the first pressing device F1 will be described in detail with reference to FIGS. 1 and 5. In the illustrated embodiment, the first pressure device F1 includes a drive motor 5 capable of controlling the rotation speed, a drive wheel 2 rotating by a driving force of the drive motor, and the drive wheel 2. And a crank mechanism (3) for converting the rotational motion of the motor into a linear reciprocating motion. The drive wheel 2 is rotated by the rotational power of the drive motor 5, and in the embodiment shown in FIG. 5, the rotational power is transmitted by the intermediate gear Ga. That is, the intermediate gear Ga, which is connected to the output shaft of the drive motor 5, meshes with the teeth formed on the outer circumference of the drive wheel 2, thereby converting the rotational power from the drive motor 5 to the drive wheel ( 2) will be delivered. In addition, various modifications may be made to the configuration for transmitting the rotational force in the drive motor 5 to the drive wheel 2, for example, to transmit power by the belt Ba as shown in FIG. It may also be possible to configure. Rotation of the drive wheel 2 causes the drive shaft 2a provided at the center thereof to rotate.

The crank mechanism 3 includes a crank shaft 3a connected to the drive shaft 2a and rotated together, and a crank rod 3d for converting rotation of the crank shaft 3a into linear motion. do. The crankshaft 3a is composed of a rotating portion 3c that rotates like the drive shaft 2a and an axial portion 3b eccentrically connected to the rotating portion 3c. The crank rod 3d is connected to the shaft portion 3b. Therefore, when the crank shaft 3a is rotated by the drive shaft 2a, the shaft portion 3b is rotated, and the crank rod 3d is rotated in the up and down direction by the rotational movement of the shaft portion 3b. It will perform a forward reciprocating motion. In the present embodiment, it can be seen that the rotational movement of the drive motor 5 is converted to the up and down linear reciprocating motion of the molding control cylinder 4 depends on the crank mechanism 3. However, it is a matter of course that other modifications are possible in the configuration for converting the rotational motion of the drive motor to the vertical movement of the molding control cylinder (4). According to any mechanical configuration, as long as it is possible to convert the rotational force of the drive motor 5 into the up and down linear movement of the molding control cylinder 4, the present invention can be sufficiently applied.

The outer end of the crank mechanism 3 is attached to the rotary encoder 32 is configured to detect the correct rotation of the drive motor (5).

At the lower end of the crank rod 3d, a molding control cylinder 4 is provided. The molding control cylinder 4 substantially corresponds to a specific embodiment of the second pressurizing device F2. The molding control cylinder 4 is pressurized at a relatively high pressure after the first pressurization while the upper mold 8 is lowered and engaged with the lower mold 8 by the first pressing device F1 described above. It is to maintain.

The molding control cylinder 4 is a hydraulic cylinder, and the shaft 4a can move in the vertical direction by the inflow and outflow of the hydraulic pressure. Therefore, as shown in FIG. 1, the molding control cylinder 4 is provided with first and second hydraulic ports Pa and Pb through which the hydraulic pressure flows in and out. The hydraulic ports Pa and Pb are provided with a pair of hydraulic lines La and Lb, and are connected to the hydraulic source through the hydraulic lines La and Lb. And the hydraulic line (Lb) of the one side is provided with an accumulator (6) capable of maintaining the hydraulic pressure inside the cylinder (4). The accumulator (6) stores the oil pressurized by the hydraulic pump (1), the operation oil of the high pressure thus stored is used during the secondary pressurization by the hydraulic pressure, as will be described later.

The upper mold 7 is fixed to the upper platen 9 and fixed, and the lower mold 8 is fixed to the lower platen 10. The upper mold 7 and the lower mold 8 is coupled to each other, it is obvious that the inside has a cavity of a shape to be molded by the above-described rheology material. For example, when the upper mold 7 and the lower mold 8 are separated, a preform manufactured from a high solid rheology material or a low solid rheology material may be added to the lower mold 8. .

And the lower mold (8) is installed in a state in which the eject pin (EP) for the finished product penetrates the lower mold (8). The eject pin EP is installed to eject the finished product in the lower mold 8 while moving upward and downward by the ejection cylinder 11, for example, through the eject plate 11a. . Preferably, the ejection cylinder 11 is constituted by a hydraulic cylinder, and illustrations of the hydraulic access port and the hydraulic source are omitted for convenience of illustration. In addition, the components supported in a fixed state such as the drive motor 5, the hydraulic pump 1, the lower platen 10, and the like are supported by the frame F.

Next, the driving of the composite forging apparatus according to the embodiment shown in FIG. 1 will be described.

In the state in which the upper mold 7 and the lower mold 8 are separated, a preform or a low failure rate rheological material made of a high solids rheology material is introduced into the lower mold 8. Thereafter, an operation for primary pressing by the first pressing device F1 is performed. That is, the drive wheel 2 is rotated by the drive of the drive motor 5, the rotation of the drive wheel 2 is to lower the molding control cylinder 4 through the crank mechanism (3). The lowering of the molding control cylinder 4 substantially lowers the upper platen 9 so that the upper mold 7 engages with the lower mold 8.

And when the upper mold 7 is pressed by a predetermined pressure with respect to the lower mold by the first pressing device (F1) substantially the material between the upper mold 7 and the lower mold (8) is formed into a constant shape Of course. In this way, while the primary pressing is performed, the secondary pressing by the second pressing device F2 proceeds. The secondary pressurization proceeds by maintaining a constant pressure at a higher pressure.

For example, before descending the upper mold, the hydraulic pump 1 stores the hydraulic pressure in the accumulator 6. Then, the upper mold 7 is pressurized using the hydraulic pressure accumulated in the accumulator 6 while the upper mold is completely lowered. The molding speed and the molding pressure of the molding control cylinder 4 are performed by the pressure control valve 22 and the speed control valve 23, as can be seen in FIG. And the molding control cylinder (4) must be kept in a pressurized state until the solidification of the product is completed.

In this way, since the secondary pressure as described above is applied in the solidification process of the rheology material, mechanical defects such as the generation of shrinkage pores can be removed, and a product having excellent mechanical properties can be obtained by forming a finer microstructure. It becomes possible.

When the solidification of the product is completed in this way, the pressurization by the molding control cylinder 4 is terminated, and then the driving motor 5 is reversely rotated so that the first pressurizing device F1 can lift the upper platen 9. Will move upward.

When the upper mold 7 is separated from the lower mold 8 by the upward movement of the upper platen 9, the finished product is separated from the lower mold 8 by the operation of the ejecting cylinder 11. That is, when the ejection cylinder 11 is operated by hydraulic pressure, the eject pin EP is raised to separate the finished product in the lower mold 8 from the lower mold 8.

Next, another sink of the present invention shown in FIG. 2 will be described.

This embodiment is an embodiment capable of molding the rheology material in the upper mold and the lower mold is closed. In the description of the present embodiment, the same components as those of the first embodiment will be denoted by the same reference numerals, and redundant description thereof will be omitted.

As shown, a cavity for forming a material is formed between the upper mold 7 and the lower mold 8, and the sleeve 16 is provided on the upper mold 7. The sleeve 16 is for injecting the raw material between the upper and lower molds 7 and 8.

And the plunger 13 is inserted into the sleeve 16 to press the material is provided on the upper platen (9). The configuration for lowering the upper platen 9 is the same as that of the first embodiment described above.

And the mold opening and closing cylinder 14 for maintaining the state which fastened the upper mold to the lower mold 8 is provided in both sides of the frame F. As shown in FIG. The mold opening / closing cylinder 14 raises and lowers the shaft 14a by the hydraulic entry and exit. For convenience of illustration, the hydraulic entry and exit port is omitted. At the lower end of the shaft 14a, a protrusion 14b protruding outward (radially) is formed.

And as shown in more detail in Figure 4, the upper mold 7 is formed with a through hole 7b through which the shaft 14a penetrates, and the protrusion 14b inside the through hole 7b. The stepped part 7a which hangs) is formed. The lower end of the shaft 14a is formed of a lower end inclined portion 14c inclined outward, and extends to approximately the center of the through hole 8b of the lower mold 8.

On the outside of the lower mold (8), a horizontal moving member (15c) is inserted into the horizontal through hole (15b) formed in the substantially horizontal direction from the outside of the lower mold (8). The horizontal moving member 15b is inserted into the horizontal through hole 15b and is movable in the horizontal direction. On the outside of the horizontal moving member 15c, a locking lever 15 is rotatably installed on the frame F about the support shaft 15a. An inner end portion of the horizontal movable member 15c is formed with an inclined portion 15d in contact with the lower end inclined portion 14c of the shaft 14a.

When the shaft 14a of the mold opening and closing cylinder 14 is completely lowered, the upper mold 7 is in contact with the lower mold 8. Here, in the state where the shaft 14a is completely lowered, the lower end inclined portion 14c of the lower end thereof comes into contact with the inclined portion 15d of the horizontal moving member 15c. Therefore, when the lower slope portion 14c comes into contact with the inclined portion 15d formed at the inner end of the horizontal movable member 15c while the shaft 14a moves downward, the horizontal movable member 15c is outside. In the horizontal direction. The outer movement of the horizontal moving member 15c causes the locking lever 15 to rotate about the support shaft 15a.

When the locking lever 15 rotates clockwise around the support shaft 15a, the locking portion 15m formed inside the upper end of the locking lever 15 may be formed on the outer lower portion of the upper gold 7. It is caught in the jaw (7m). In this way, when the locking portion 15m of the locking lever 15 is caught by the locking jaw 7m of the upper mold 7, the upper mold 7 is substantially in close contact with the fixed lower mold 8. Will be able to maintain.

In the composite forging device according to the present embodiment, as described above, the pressing process is performed in a state where the upper mold 7 is completely in close contact with the lower mold 8 by the locking lever 15. That is, through the sleeve 16 mounted on the upper mold (7) is injected into the cavity between the upper mold (7) and the lower mold (8) of the high-density rheology material of the billet shape or the low-density rheology material do.

As described in the above embodiment, the first pressure device F1 operates to lower the upper platen 9 so that the plunger 13 descends along the inner wall of the sleeve 16 to pressurize the rheology material. Subsequently, the second pressing device F2, that is, the molding control cylinder 4, is operated to maintain the secondary pressing state of the material by using the plunger 13 until the material is completely solidified. Then, after the end of pressure holding (after the finished product is solidified), the plunger 13 also rises as the upper platen 9 rises.

When the shaft 14a of the mold opening / closing cylinder 14 rises, the protrusion 14b of the shaft 14a rises and is caught by the stepped portion 7a of the lower mold 7, thereby substantially raising the upper brim 7 (7). ) Can be raised. Here, when the bottom inclined portion 14c of the shaft 14a is in contact with the inner inclined portion 15d of the horizontal moving member 15, the locking portion 15m of the locking lever 15 is lowered in the lower mold ( 7) is released from the locking step 7m. For example, the locking lever 15 is configured to be elastically supported in a counterclockwise direction by a spring (for example, a torsion spring interposed on the support shaft 15a to elastically support the locking lever in a counterclockwise direction). As a result, when the contact relationship between the shaft 14a and the horizontal moving member 15c is released, the locking lever 15 is preferably such that the fastening relationship with the upper mold 7 is released.

After the locking lever 15 is separated and the upper mold 8 is raised, the ejection cylinder 11 is raised in the same manner as in the above-described embodiment, and the product is ejected from the lower mold 8 by the eject pin EP. Take it out and descend.

Next, the embodiment shown in FIG. 3 will be described. The practical configuration of this embodiment is almost similar to that of the second embodiment. This embodiment will be described taking an operation process as an example. The same components as those in the second embodiment are denoted by the same reference numerals.

In the state where the upper mold 7 is separated from the lower mold 7 by the mold opening / closing cylinder 14, a high solid rheology material preform or a low solid rate rheology material is injected into the lower mold. Here, the upper mold 7 is in a separated state, as described in the second embodiment. The shaft 14a of the mold opening / closing cylinder 14 is raised so that the upper mold 7 is the lower mold 8. It means separated state.

After the rheology resin is put in the state in which the upper mold is separated, the upper mold 7 is coupled to the lower mold 8 by the mold opening / closing cylinder 14 and is primarily pressed. At this time, as described above, the locking lever 15 maintains the upper mold 7 in a fastened state with respect to the lower mold 8, and the operation of the locking lever 15 is as described above. Therefore, the rheology material inside the upper and lower molds 7 and 8 is primarily molded into a shape corresponding to the cavity inside the mold.

After the upper mold 7 is fastened to the lower mold 8 in this way, secondary pressurization is performed by the lowering of the plunger 13 fixed to the upper platen 9 within a very short time. Here, the lowering of the plunger 14 is caused by the first pressure device F1 composed of the drive motor 5, the drive wheel 2, the crank mechanism 3, and the like, in detail in the first embodiment. As described. And by the operation of the molding control cylinder 4 in the state where the plunger 14 is lowered, the plunger 14 maintains a pressure to pressurize the material until the material between the upper and lower molds 7 and 8 is solidified. Thus, the pressure holding by the second pressurizing device F2 is also as described in the first embodiment.

As described above, due to the pressurization by the first pressurizing device F1 and the second pressurizing device F2, the microstructure of the rheologic material may be more dense, and shrinkage defects, unmolding, and the like may be prevented. After the material is completely molded and solidified, the plunger 13 is raised at the same time as the upper platen 9 is raised, and then the upper mold 7 is lowered by the mold opening / closing cylinder 14. Are separated. And after taking out a product by the rise of the extraction cylinder 11, the extraction cylinder 11 is comprised by the process of descending.

6 is an exemplary hydraulic circuit diagram for driving the above-described embodiment. As shown, for example, the oil source (Os), such as the hydraulic tank is provided with the oil level gauge 25, at the same time the thermometer 26 for temperature detection, the cooler 30 for cooling the overheated oil, And the heater 31 for heating of oil is provided. And the hydraulic pressure from the hydraulic source (Os) by the hydraulic pump 1 can be supplied to the molding control cylinder 4 and the mold opening and closing cylinder (14).

Since the oil supplied by the hydraulic pump 1 is supplied to the molding control cylinder 4 through the speed control valve 23, it is possible to adjust the feed speed of the molding control cylinder (4). And the accumulator (6) is connected to the molding control cylinder (4) is configured to maintain a pressurized state as described above, the pressure control valve 22 is installed downstream of the accumulator (6) In this way, by adjusting the hydraulic pressure of the molding control cylinder 4, it is possible to substantially adjust the pressure applied to the material by the second pressing device (F2).

And a part of the oil by the hydraulic pump 1 is supplied to the mold opening and closing cylinder 14 through the direction control valve 29 and the flow control valve 28. Of course, the direction control valve 29 is for controlling the direction of the oil through a pair of inlet and out ports for the operation of the mold opening and closing cylinder (14).

According to the present invention as described above, it can be seen that through the primary pressure by the hydraulic pressure and the hydraulic secondary pressure, the pressurized state can be maintained until the rheology material solidifies. And according to the embodiments of the present invention, the upper mold (7) and the lower mold (8) in a state in which the injection molding rheology material, or the upper mold (7) and the lower mold (8) combined state Injection by molding the rheology material, or by injecting the rheology material in the state that the mold is separated, the primary pressure to the upper mold (7), the secondary pressure with the plunger (13) can be taken. It can be seen that it is configured to.

Therefore, the composite forging apparatus of the present invention can be applied to the present invention the components applied to the existing gravity casting, low pressure casting, medium pressure casting, squeeze casting, cold forging, hot forging and the like. In addition, modifications to conventional mechanical and hydraulic presses can replace expensive thixotropic and rheologic forming equipment.

According to the present invention as described above, it can be seen that casting and forging of rheology materials using materials such as aluminum and magnesium is possible. Therefore, by using the apparatus of the present invention, it is possible to cast and forge not only cast alloys but also structural alloys, and to achieve a more compact, less defect and excellent mechanical property by pressurized holding by primary and secondary. It can manufacture. Therefore, it can be expected to replace the rheology molding equipment, which requires expensive equipment investment cost, with a low-cost general mechanical and hydraulic press. In addition, according to the shape and size of the product, the above three processes can be selected and used only by replacing the mold.

In addition, according to the present invention, it will be understood that casting and forging of a rheologic material can be performed regardless of a solid phase rate. The composite forging apparatus according to the present invention can replace the existing casting and forging processes with rheology casting and forging processes, and it can be seen that the above-mentioned conventional disadvantages can be sufficiently solved.

Claims (5)

A forging apparatus having an upper mold and a lower mold having a cavity for forming a material therein; A first pressurizing device which pressurizes the upper mold mechanically to pressurize the material put into the lower mold; And a second pressurizing device for pressurizing the upper mold by hydraulic pressure until the material solidifies in the pressurized state of the first pressurizing device. A lower mold fixed to the frame; An upper mold coupled to the lower mold to form a cavity for forming a material therein; A drive motor capable of controlling the rotation speed; Converting means for converting the rotational force of the drive motor into linear motion to pressurize the upper mold against the lower mold; And a molding control cylinder installed at the lower portion of the converting means and configured to pressurize the upper mold by hydraulic pressure until the material is solidified in a state of being pressed by the converting means. According to claim 2, The fastening means, A mold opening / closing cylinder which is operated by hydraulic pressure and has a protruding portion at a lower portion thereof, and a lower end portion having a lower slope inclined outwardly; A through hole of the upper mold having a stepped portion to which the protrusion of the shaft is caught; A horizontal moving member having an inclined portion at the inner end portion which is in contact with the lower slope portion and inserted into a horizontal through hole of a lower mold to move in a horizontal direction; The outer forging portion and the lower end of the horizontal movable member is in contact with the rotatably connected to the frame by the support shaft, the inner end portion is composed of a locking lever having a locking portion having a locking jaw of the upper mold.  A lower mold fixed to the frame; An upper mold which forms a cavity for forming a material between the lower mold and is movable up and down; After the material is put into the lower mold, the upper mold is lowered and engaged with the lower mold to engage, the pressing and fastening means for pressing the material; A sleeve installed in the upper mold; A plunger inserted into the sleeve to pressurize the material; First pressing means for pressing the material by lowering the plunger into the sleeve; And a second pressurizing means for further pressurizing the raw material until solidifying using the plunger in the pressurized state of the first pressurizing means.  The method of claim 4, wherein the pressing and fastening means, A mold opening / closing cylinder which is operated by hydraulic pressure and has a protruding portion at a lower portion thereof, and a lower end portion having a lower slope inclined outwardly; A through hole of the upper mold having a stepped portion to which the protrusion of the shaft is caught; A horizontal moving member having an inclined portion at the inner end portion which is in contact with the lower slope portion and inserted into a horizontal through hole of a lower mold to move in a horizontal direction; The outer forging portion and the lower end of the horizontal movable member is in contact with the rotatably connected to the frame by the support shaft, the inner end portion is composed of a locking lever having a locking portion having a locking jaw of the upper mold.

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