KR102195543B1 - A Press Mold for Manufacturing a Small Sized Element of a Car and a Method for Manufacturing a Small Sized Element of a Car Using the Same - Google Patents

Abstract

The present invention relates to a press mold for molding small automobile parts and a method of manufacturing small automobile parts by the press mold, and specifically, a compact automobile that enables continuous molding of automobile parts having the same standard and quality by a press mold prepared in advance. It relates to a press mold for molding parts and a method of manufacturing a small automobile part by the press mold. The press mold is made of a die mold 10 and a punch mold 20, and the die mold 10 includes a support unit 121; A forming groove 11 formed in the receiving unit 121 and having at least one forming hole 112a, 112b; And pressure members 261 and 262 formed below the forming holes 112a and 112b, wherein the punch mold 20 is inserted into at least one forming hole 112a and 112b to form the pressure members 261 and 262 Punch members (211, 212) for pressing; A guide unit 22 for inducing movement of the punch members 211 and 212; And a pressing unit 23 disposed to be movable with respect to the guide unit 22.

Description

A Press Mold for Manufacturing a Small Sized Element of a Car and a Method for Manufacturing a Small Sized Element of a Car Using the Same}

The present invention relates to a press mold for molding small automobile parts and a method of manufacturing small automobile parts by the press mold, and specifically, a compact automobile that enables continuous molding of automobile parts having the same standard and quality by a press mold prepared in advance. It relates to a press mold for molding parts and a method of manufacturing a small automobile part by the press mold.

Various parts of an industrial site, including automobile parts, can be made by a machine tool of a machining center. For example, flanges, cylinder blocks, bolts or nuts having a three-dimensional shape may be made through a cutting or milling process. In contrast, the outer body of a vehicle having a plate shape depending on the material may be made by pressing or forging. In general, parts that have a three-dimensional shape and require a certain strength are made through processes such as cutting, drilling or chamfering. However, according to the recent development of the material industry, for example, aluminum or aluminum alloy may have the same strength as stainless steel or carbon steel, and parts manufactured by conventional machine tools using such materials are made by, for example, a press or forging process. Technology that can be lost is being developed.

Patent Publication No. 10-2014-0087756 is a step of preparing a press mold having a punch die and a hole punch; Preparing a press working apparatus having a collet chuck to which the workpiece of the primary piston is fixed; Advancing the collet chuck in close contact with the punch die and processing the oblique hole with a taper punching device inclined to the surface of the workpiece; Processing a hole along the circumferential surface in a direction perpendicular to the surface of the workpiece with a hole punch; And removing burrs generated in the outer diameter of the workpiece of the primary piston with a brush.

Patent Registration No. 10-1342221 uses a 2.5t steel plate for the first body having a circular shape with a protruding ring formed at the edge of the pipe part, a horizontal end formed inside the pipe part, and a spindle through hole formed at the horizontal end. And completing it through a cold press operation; A second body made of a plate having a diameter equal to the inner diameter of the tube portion of the first body is formed with a recessed groove in the upper surface maintaining a certain distance, a spindle through hole is formed inside the protruding end. Completing through a cold press operation using a 2.5t iron plate; And a second body is inserted into the tube portion of the first body so that the bottom surface of the second body and the horizontal end of the first body are in contact with each other, and the first body and the second body are connected by spot welding, brazing, or projection welding. Disclosed is a method of manufacturing a clutch piston of an automatic transmission for a vehicle including the step of being integrated.

Patent Publication No. 10-2012-0070672 discloses an upper device stand installed in which a hydraulic cylinder is mounted in the upper center of the molding device so that a pressurizing rod is operated directly downward, and a lower device stand installed at a position opposite to the upper device stand. , The molding frame body fixedly installed on the plate of the lower device stand, and the molding frame body has a molding frame installed in the upper center of the pedestal, and is fitted with a vertical guide bar at the corner so as to be moved up and down. And a pressurizing action is performed by a pressurizing rod, and a pressurizing member is installed in the center of the bottom of the board to enter the forming space of the forming frame to form parts, and a hydraulic path supplied to the hydraulic cylinder Disclosed is a machine exclusively for molding automobile parts that enables control of a hydraulic cylinder by installing a pneumatic booster.

The molding process disclosed in the prior art is difficult to be applied to a press process of automobile parts such as flanges, for example. For press processing of small automobile parts such as flanges, a mold must be prepared that has a certain level of quality and can be continuously manufactured, and the pressing process by the mold needs to be made simple. The prior art has a disadvantage in that the process process is complicated and it is difficult to guarantee a predetermined quality.

The present invention has the following objects to solve the problems of the prior art.

Prior Art 1: Patent Publication No. 10-2014-0087756 (Seoyoung Precision Co., Ltd., published on July 9, 2014) Buff-free precision processing method of primary piston by press mold Prior Art 2: Patent registration number 10-1342221 (Sukhee Seo et al., published on December 16, 2013) Manufacturing method of clutch piston of automatic transmission for automobiles Prior Technology 3: Patent Publication No. 10-2012-0070672 (Dongkuk Precision Co., Ltd., published on July 2, 2012) Automotive parts molding machine

An object of the present invention is a press mold for forming a small automotive part that enables a small automotive part having at least one hole while at least partly curved and having at least one hole to be manufactured in one process, and a method for manufacturing a small automotive part thereby Is to provide.

According to a preferred embodiment of the present invention, the press mold is made of a die mold and a punch mold, and the die mold includes a support unit; A forming groove formed in the receiving unit and having at least one forming hole; And a punch member formed of a pressure member formed below the forming hole, wherein the punch mold is inserted into at least one forming hole to press the pressure member; A guide unit for guiding the movement of the punch member; And a pressing unit disposed to be movable with respect to the guide unit.

According to another suitable embodiment of the present invention, the die mold further comprises at least one pressure dispersing unit for dispersing the pressure of the lower surface of the receiving unit.

According to another suitable embodiment of the present invention, the punch member is composed of a portion extending with one diameter and a portion extending with two diameters smaller than one diameter, and the boundary portion of the diameter of 1 and 2 is a stopper in the hole forming process. Has the function of

According to another preferred embodiment of the present invention, a method of manufacturing a flange, which is a small automobile component by a press mold, includes preparing a die mold; Arranging a component base material made of aluminum or aluminum alloy in the die mold; Fixing the part base material to a predetermined position of the die mold by a fixing pin; Preparing a punch mold having a punch member corresponding to the die mold; Setting press process conditions; Lowering the guide unit of the punch mold to contact the die mold; Determining the position of the punch member; And performing a press working on the part base material while the punch member is lowered by the lowering of the pressing unit.

The press mold according to the invention allows small automotive parts, such as flanges, for example to be manufactured by press working. By such press processing, small automobile parts manufactured through a plurality of cutting process processes such as hole processing, upper surface finishing, and lower surface finishing can be made in one process. The method according to the invention allows a variety of small automotive parts that can be manufactured from aluminum or aluminum alloys to be made in molds suitable therefor. Accordingly, regardless of the skill level of the operator, the quality of parts is uniform and the production efficiency of the mass production process is improved.

1A and 1B show an embodiment of a press mold according to the present invention.
2 shows an embodiment of a punch for forming a hole in the press mold according to the present invention.
3 shows another embodiment of a press mold according to the present invention.
4A is a diagram illustrating an embodiment of a method of manufacturing a small vehicle component according to the present invention, and FIG. 4B is a diagram illustrating an embodiment of a flange corresponding to a component of a vehicle manufactured by the manufacturing method according to the present invention.

In the following, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments are for a clear understanding of the present invention, and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so if they are not necessary for the understanding of the invention, they will not be described repeatedly, and well-known components will be briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment of.

The press mold according to the present invention includes a die mold and a punch mold, and a hole may be processed by a punch mold. The pressure applied to the punch mold may be generated by a hydraulic cylinder operated by a hydraulic pump or a driving device such as a motor. The operation of the press can be made according to various methods known in the art. The press mold according to the present invention can be applied to the molding of a flange corresponding to an automobile part, and for example, an aluminum or aluminum alloy material is formed by press working. The aluminum alloy can be, for example, but not limited to, Al 6061-0, Al 6061-T4 or Al 6061-T6.

In the following, the present invention is explained by presenting a flange corresponding to an automobile part in an embodiment, but the mold according to the present invention can be applied to various small automobile parts manufactured by a cutting process, and the present invention is applied to various materials capable of press processing. The mold according to may be applied, and the present invention is not limited by the type of material or part.

1A and 1B show an embodiment of a press mold according to the present invention.

The press mold for a small automobile part according to the present invention is composed of a die mold 10 and a punch mold 20. And the die mold 10 is a support unit 121; A forming groove 11 formed in the receiving unit 121 and having at least one forming hole 112a, 112b; And pressure members 261 and 262 formed below the forming holes 112a and 112b, and the punch mold 20 is inserted into at least one of the forming holes 112a and 112b to provide the pressure members 261 and 262. Punch members 211 and 212 for pressing; A guide unit 22 for inducing movement of the punch members 211 and 212; And a pressing unit 23 disposed to be movable with respect to the guide unit 22.

The die mold 10 fixes the part base material so that the part base material is made into a predetermined shape by the punch mold 20. The component base material may be, for example, aluminum or an aluminum alloy, but is not limited thereto, and may be any metal or alloy material capable of pressing. The part base material may have a shape suitable for the shape of the part to be processed, and may be prepared in advance to be placed in the die mold 10.

Referring to (a) and (b) of FIG. 1, the die mold 10 includes a support unit 121 having a plate shape and forming a forming groove 11 in which a component base material is disposed in a central portion; The support unit 121 is disposed under the support unit 121 to stably maintain the plate-shaped 1,2 fixing units 122 and 123; A balance unit 15 disposed below the 1,2 fixing units 122 and 123; It may consist of a base unit 14 connected by the balance unit 15 and the fixing member 13.

The forming groove 11 may be formed in a shape suitable for the shape of the part to be formed, and forming holes 112a and 112b may be formed in the case of a part having holes. The forming groove 11 may have an arrangement portion 111 corresponding to the total cross-sectional area of the part, and the arrangement portion 111 may be a groove shape having an inner circumferential wall contacting at least a portion of the peripheral surface of the component base material. have. Depending on the shape of the part to be molded, the compression cutting portion 113 may be formed in the molding groove 11. For example, a press mold may be prepared for a flange corresponding to a small automobile component that is fixed to different devices by combining different conduits. For example, the die mold 10 for a flange may include a forming hole 11 having two different diameter forming holes 112a and 112b and a compression cutting portion 113 formed with an open groove on one side thereof. I can.

The 1st and 2nd fixing units 122 and 123 may have a plate shape having the same or different thickness, and may be made to have the same contact surface as the support unit 121. The 1st and 2nd fixing units 122 and 123 stably fix the support unit 121 and allow the part base material to be fixed at a predetermined position during the molding process. Since the die mold 10 is formed of a stacked structure of a plurality of plates, the base material of the component can be stably fixed, and the pressure is applied stepwise during the pressing process. A distribution unit 124 may be installed between the 1 and 2 fixing units 122 and 123 and the balance unit 15. The dispersing unit 124 may have a function of distributing the pressure applied from the punch members 211 and 212, and have a function of alleviating the vibration generated in the forming holes 112a and 112b and transmitted to the balance unit 15. have. The distribution unit 124 may be optionally installed.

The balance unit 15 may be made in a plate shape having a relatively large thickness and a contact area compared to the support unit 121 or the 1 and 2 fixing units 122 and 123. The balance unit 15 may be made to have an appropriate level of flatness, and may be made of a material or shape capable of absorbing shock or vibration. The pressure applied to the balance unit 15 during the pressing process may be transmitted to the base unit 14 through the fixing member 13. The base unit 14 may be made in a structure similar to the balance unit 15. In addition, pressure inducing members 161 and 162 are formed in the die mold 10 to induce vertical movement of the punch mold 20. The pressure inducing members 161 and 162 will be described again below.

The first and second fixing units 122 and 123 and the dispersing unit 124 described above may have a function of a pressure dispersing unit to alleviate or disperse pressure or vibration generated in the press process. The pressure dispersing unit may be formed of multiple layers, and the number of layers overlapping each other is exemplary, and the present invention is not limited thereto.

The punch mold 20 includes at least one punch member 211 and 212 which forms a hole in the component base material while being inserted into the processing holes 112a and 112b; A guide unit 22 in contact with the support unit 121 while inducing the movement of the punch members 211 and 212 during the pressing process; And a pressing unit 23 in which the guide unit 22 is arranged to be separated and contactable to move the punch members 211 and 212 to the front of the guide unit 22. And it may be made of a punch balance unit 24 for transmitting the pressure to the pressing unit 23.

The punch members 211 and 212 may be formed to correspond to the machining holes to be formed in the part, and may extend while having different diameters. Specifically, the punch members 211 and 212 consist of a portion extending to 1 diameter and a portion extending to 2 diameters smaller than the diameter of 1, and the boundary portion between the diameter of 1 and 2 has a function of a stopper in the hole forming process. I can. In addition, a hole may be formed in the base material of the part by a part corresponding to 2 diameters.

One end of the punch members 211 and 212 may be fixed to the pressing unit 23, and the punch members 211 and 212 may be disposed to be movable with respect to the guide unit 22. In addition, the guide unit 22 and the pressing unit 23 may be coupled to enable relative movement. In such a structure, the guide unit 22 and the pressing unit 23 may be separated from each other in the punch mold 20 positioned above, as shown in (B) of FIG. 1A for molding on the part base material. Thereafter, as shown in (A) of FIG. 1B for molding the component base material, the guide unit 22 may be in contact with the support unit 122. And when the positions of the die mold 10 and the punch mold 20 are determined, pressure is applied to the punch balance unit 24, and accordingly, as shown in (B) of FIG. 1B, the punch balance unit 24 and the pressure are pressed. As the unit 23 moves downward, it comes into contact with the guide unit 22, and accordingly, the punch members 211 and 212 move downward to form a machining hole in the part base material, and the ends of the punch members 211 and 212 It can be inserted into the forming hole. In addition, as pressure is applied to the compression cutting portion 113, the base material of the part may be made into a predetermined shape.

In this way, the guide unit 22 and the pressing unit 23 are arranged in a structure that can be separated from each other, and the guide unit 22 first comes into contact with the support unit 122 to firmly fix the component base material in a predetermined position, and then pressurize. By forming the machining hole by the unit 23, the error of the molded part is reduced.

The die mold 10 or the punch mold 20 may be made in various structures, and the punch members 211 and 212 and the forming holes 112a and 112b into which the punch members 211 and 212 are inserted are the punch members 211 , 212) can be made into a structure suitable for forming the machining hole.

2 shows an embodiment of a punch for forming a hole in the press mold according to the present invention.

Referring to FIG. 2, the punch members 211 and 212 may be a pair, and may have different diameters. Hole processing portions 211a and 212a may be formed in each of the punch members 211 and 212, and the hole processing portions 211a and 212a may each have a shape corresponding to the diameter of the processing hole, and the punch member 211 , 212) can be made to have a smaller diameter compared to other parts.

Pressure members 261 and 262 through which pressure applied by the punch members 211 and 212 is transmitted may be disposed on the die mold. The pressure members 261 and 262 may be made in a cylindrical shape, and the upper portion of the pressure members 261 and 262 is located at the placement portion 111 formed in the forming groove so as to face each other with the punch members 211 and 212. Can be inserted. When the component base material (M) is disposed on the placement portion 111 of the forming groove, it is fixed by the fixing pins 251 and 252 to limit movement. The fixing pins 251 and 252 may have a function of restricting movement of the component base material M and preventing a certain portion of the component base material M from being pushed and deformed during the pressing process. The pressure members 261 and 262 may be positioned by fixing holes 271 and 272 formed in the placement portion 111. In the process of forming the processing hole in the part base material M by the punch members 211 and 212, the pressure concentrated on the processing hole portion can be transmitted to the pressure members 261 and 262, whereby the die mold or the punch mold While this is stably fixed, the component base material (M) may be fixed at a predetermined position of the placement portion 111 at the same time. The punch members 211 and 212 or the pressure members 261 and 262 may be made of a material having a relatively high hardness. If necessary, the inner surfaces of the fixing holes 271 and 272 of the placement portion 111 or the outer circumferential surfaces of the punch members 211 and 212 may be coated with a material such as cemented carbide to prevent deformation.

The punch members 211 and 212 or the pressure members 261 and 262 may be made of various materials with high hardness in various structures, and the present invention is not limited to the presented embodiments.

3 shows another embodiment of a press mold according to the present invention.

Referring to FIG. 3, the placement portion 111 to which the component base material is fixed has a flange shape, and forming holes 112a and 112b having different diameters may be formed in the placement portion 111. A pair of pressure induction members 161 and 162 may be disposed in the balance unit 14, and each of the pressure induction members 161 and 162 may be inserted into the induction holes 31a and 32a formed in the punch die. . Each of the pressure induction members (161, 162) has a non-slip protrusion formed on its circumferential surface to move up and down, and is disposed under the induction cylinder to have a spring-like elasticity that functions as a buffer during the pressing process. Units 311 and 321 may be included.

The end portions of the punch members 211 and 212 may have a concave lens shape or a semicircular shape concave in the direction of the punch balancing unit 24, and flow holes 211b and 212b may be formed in the central portion. The concave lens shape prevents the material of the part base material from being pushed to the side during the process of forming the machining hole, and the flow holes 211b and 212b allow air to be discharged to the outside. In addition, a part-shaped groove 21a corresponding to the shape of the part to be molded may be formed on the contact surface of the guide unit 22.

The pressure inducing members 161 and 162 or the punch members 211 and 212 may be made in various shapes, and the present invention is not limited to the presented embodiments.

4A is a diagram illustrating an embodiment of a method of manufacturing a small vehicle component according to the present invention, and FIG. 4B is a diagram illustrating an embodiment of a flange corresponding to a component of a vehicle manufactured by the manufacturing method according to the present invention.

Referring to Figure 4, for example, for a small automobile part such as a flange, preparing a die mold having a shape of the part (P41); Placing a component base material made of aluminum or aluminum alloy in the die mold (P42); Fixing the component base material to a predetermined position of the die mold by means of a fixing pin (P44); Preparing a punch mold having a punch member corresponding to the die mold (P44); Setting press process conditions (P45); Lowering the guide unit of the punch mold to contact the die mold (P46); Determining the position of the punch member (P47); And a step (P48) in which the punch member is lowered by the lowering of the pressing unit and press processing is performed on the component base material.

For the manufacturing method according to the present invention, the die mold and the punch mold described above may be applied. Process conditions for the press process may be determined according to the type of material (P45). For example, the pressure applied by the punch member or the temperature of the component material may be determined. Various process conditions can be applied to the manufacturing method according to the present invention.

The die mold and the punch mold penetrate the part body 41 and the part body 41 as shown in FIG. 4B to a small automobile part having 1 and 2 processing holes 421 and 422 and a fastening inlet 43. The corresponding flange 40 may be molded. The first and second processing holes 421 and 422 may be formed by the punch member, and the fastening inlet 43 may be formed by a cutting process. By forming the flange 40 by a die mold and a punch mold, a manufacturing process consisting of four processes: 1 processing hole 421, 2 processing hole processing 422, top chamfering and bottom chamfering, is a press process. Let it happen.

The method according to the present invention can be applied to the manufacture of various small parts, and the present invention is not limited to the presented embodiments.

The press mold according to the invention allows small automotive parts, such as flanges, for example to be manufactured by press working. By such press processing, small automobile parts manufactured through a plurality of cutting process processes such as hole processing, upper surface finishing, and lower surface finishing can be made in one process. The method according to the invention allows a variety of small automotive parts that can be manufactured from aluminum or aluminum alloys to be made in molds suitable therefor. Accordingly, regardless of the skill level of the operator, the quality of parts is uniform and the production efficiency of the mass production process is improved.

The present invention has been described in detail above with reference to the presented embodiments, but those of ordinary skill in this field will be able to make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such modifications and variations of the invention, but is limited by the claims appended below.

10: die mold 20: punch mold
11: forming groove 13: fixing member
14: base unit 15: balance unit
21a: part shape groove 22: guide unit
23: pressurization unit 24: punch balance unit
31a, 32a: guide hole 31, 32: guide cylinder
40: flange 43: fastening inlet
121: base unit 122: 1 fixing unit
123: 2 fixed units 124: distributed units
111: placement portion 112a, 112b: forming hole
113: compression cutting portion 161, 162: pressure induction member
211, 212: punch member 211a, 212a: hole processing portion
251, 252: fixing pins 261, 262: pressure member
271, 272: fixing hole 41: part body
421, 422: machining hole
M: Part base material

Claims (2)

In a press mold for manufacturing a small automobile part comprising a die mold 10 and a punch mold 20,
The die mold 10
A receiving unit 121;
A forming groove 11 formed in the receiving unit 121 and having forming holes 112a and 112b having two different diameters; And
Consists of; pressure members 261 and 262 formed under the forming holes 112a and 112b,
The punch mold 20
Punch members (211, 212) inserted into the forming holes (112a, 112b) to press the pressure members (261, 262);
A guide unit 22 in contact with the receiving unit 212 while inducing the movement of the punch members 211 and 212 during the pressing process; And
Consists of; a pressing unit 23 disposed to be movable with respect to the guide unit 22,
The punch members 211 and 212 are composed of a portion extending to one diameter and a portion extending to two diameters smaller than one diameter, and the boundary portion between the diameter of 1 and the diameter of 2 has a function of a stopper in the hole forming process, The end portions of the punch members 211 and 212 have a concave lens shape, and flow holes 211a and 211b are formed in the central part to discharge air to the outside, and the forming groove 11 is a circumference of the part base material. A groove-shaped arrangement portion having an inner circumferential wall in contact with at least a portion of the face,
The die mold 10 further includes at least one pressure dispersing unit 122, 123, 124 for dispersing the pressure of the lower surface of the receiving unit 121,
A press mold for manufacturing a compact automobile component, characterized in that a component-shaped groove (21a) corresponding to the shape of the component to be molded is formed on the contact surface of the guide unit (22). delete

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