KR20170058355A - 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 a small-sized vehicle component, and to a method of producing a small-sized vehicle component through the same. More specifically, vehicle components having the same size and quality being able to continuously be molded by a predetermined press mold. The press mold includes a die mold (10) and a punch mold (20). The die mold (10) comprises: a support unit (121); a molding groove (11) formed on the support unit (121) having one or more molding holes (112a, 112b) formed therein; and pressure members (261, 262) formed on the bottom sides of the molding holes (112a, 112b). The punch mold (20) comprises: punch members (211, 212) inserted into the molding holes (112a, 112b) pressing the pressure members (261, 262); a guide unit (22) to induce a movement of the punch members (211, 212); and a pressing unit (23) disposed to be moved with respect to the guide unit (22).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press mold for molding a small-sized automobile part, and a method of manufacturing the small-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press mold for molding a compact automobile part and a method for manufacturing the compact automobile part by the press mold and more particularly to a compact automobile And a method of manufacturing a small automobile part by the press die.

Various parts of the industrial field including automobile parts can be made by the machine tool of the machining center. For example, a flange, cylinder block, bolt or nut having a three-dimensional shape can be produced through a cutting or milling process. On the other hand, the outer body of the automobile having the plate shape according to the material can be made by press working 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. Aluminum or aluminum alloy, for example, can have strengths such as stainless steel or carbon steel depending on the recent developments in the material industry. Parts made by conventional machine tools with such materials, for example, Technology is being developed.

Patent Publication No. 10-2014-0087756 discloses a method of manufacturing a press mold comprising: preparing a press mold having a punch die and a hole punch; Preparing a press working apparatus having a collet chuck to which a work piece of a primary piston is fixed; Advancing the collet chuck into close contact with the punch die and machining the oblique hole with a tapered punching device inclined to the surface of the workpiece; Machining the hole along the peripheral surface in a direction perpendicular to the surface of the workpiece with a hole punch; And removing the burr generated in the outer diameter of the work piece of the primary piston by the brush.

Patent Registration No. 10-1342221 uses a 2.5t steel plate as a first body having a protruding ring at the edge of a tube portion, a horizontal end formed inside the tube portion, a spindle through hole formed at the horizontal end, Thereby completing the process through a cold pressing operation; A second body made of a plate having the same diameter as the inner diameter of the tube portion of the first body, and a second body having the same diameter as the inner diameter of the tube portion of the first body, Completing a cold press work using a steel plate of 2.5 t; And the second body is inserted into the tubular 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 while the upper surface is in contact with the upper surface of the first body and the first body and the second body are welded by spot welding, So as to be integral with the clutch piston of the automotive automatic transmission.

Patent Publication No. 10-2012-0070672 discloses a method of manufacturing a press machine in which a hydraulic cylinder is mounted at the center of the upper portion of a molding apparatus and a pressurizing operation rod is installed to be operated in a direct downward direction and a lower apparatus stand A mold frame fixedly installed on a plate of the lower unit; and a mold frame provided on the upper center of the mold frame, the mold frame being mounted on a vertical guide rod at an edge portion so as to be elevated and lowered, And a press working member is provided at the center of the bottom surface of the pressure gauge plate so as to downwardly enter the molding space of the mold so as to form a part, Which can control the hydraulic cylinder by installing a pneumatic booster .

The molding process disclosed in the prior art is difficult to apply to a press process of an automotive part such as a flange. It is necessary to prepare a mold that can be continuously manufactured with a certain quality or higher for press working of a small automobile part such as a flange, and it is necessary to simplify the pressing process by the mold. The prior art has a disadvantage in that the process is complicated and it is difficult to ensure a predetermined quality.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Patent Publication No. 10-2014-0087756 (published by Seo Young Precision Co., Ltd., Jul. 09, 2014) Precision machining method of the primary piston of the primary piston by the press die Prior Art 2: Patent Registration No. 10-1342221 (Seo, Sook Hee, et al., Published on Dec. 16, 2013) Manufacturing Method of Clutch Piston for Automotive Automatic Transmission Prior Art 3: Patent Publication No. 10-2012-0070672 (published by Dongguk Precision Co., Ltd., Jul. 02, 2012)

An object of the present invention is to provide a press mold for molding a small automobile part, which enables a small automobile part having at least one hole having at least a part of a curved shape to be manufactured by a single process, and a method for manufacturing a small automobile part by the method .

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

According to another preferred embodiment of the present invention, the die mold further includes at least one pressure distribution unit for distributing the pressure on the lower surface of the support unit.

According to another preferred embodiment of the present invention, the punch member is composed of a portion extending in one diameter and a portion extending in two diameters smaller than the one in diameter, and a boundary portion between the one diameter and the two diameters, .

According to another preferred embodiment of the present invention, a method of manufacturing a flange that is a small automobile part by a press die includes the steps of: preparing a die; Disposing a component base material made of aluminum or an aluminum alloy material on the die metal mold; Fixing the component base material to a predetermined position of the die by a fixing pin; Preparing a punch mold having a punch member corresponding to the die die; Setting a press process condition; Lowering the guide unit of the punch mold and bringing it into contact with the die mold; Determining a position of the punch member; And pressing the component base material while the punch member is lowered by the lowering of the pressurizing unit.

The press mold according to the present invention allows a small automobile part such as a flange to be manufactured by press working. By such pressing, small automobile parts manufactured through a plurality of cutting processes such as hole processing, top surface finishing, and bottom surface finishing can be made into one process. The method according to the invention allows a variety of small automotive parts which can be made of aluminum or an aluminum alloy to be made in a mold suitable for it. Thus, the production efficiency of the mass production process can be improved while ensuring uniform part quality irrespective of the skill level of the operator.

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

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

The press die according to the present invention comprises a die die and a punch die, and the hole can be machined by a punch die. The pressure applied to the punch mold may be generated by a drive device, such as a hydraulic cylinder or motor operated by a hydraulic pump. The operation of the press can be accomplished according to various methods known in the art. The press mold according to the present invention can be applied to the forming 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 may be, for example, but not limited to Al 6061-0, Al 6061-T4 or Al 6061-T6.

In the following, the present invention will be described with reference to an embodiment of a flange corresponding to an automobile part. However, 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 not limited by the type of material or part.

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

A press mold for a small automobile part according to the present invention comprises a die die (10) and a punch die (20). The die mold 10 includes a support unit 121; A molding groove (11) formed in the supporting unit (121) and having at least one molding hole (112a, 112b) formed therein; And the pressure members 261 and 262 formed below the molding holes 112a and 112b and the punch mold 20 is inserted into at least one molding hole 112a and 112b to pressurize the pressure members 261 and 262 Punch members (211, 212) for pressing; A guide unit 22 for guiding the movement of the punch members 211 and 212; And a pressurizing unit 23 arranged to be movable with respect to the guide unit 22.

The die mold 10 fixes the component base material so that the component base material is formed into a predetermined shape by the punching die 20. [ The component base material may be any metal or alloy material capable of being pressed, such as, but not limited to, aluminum or aluminum alloy, for example. The part base material can be in a shape suitable for the shape of the part to be processed and can be prepared in advance to be disposed in the die metal mold 10. [

Referring to FIGS. 1 (a) and 1 (b), the die metal mold 10 includes a support unit 121 having a plate shape and formed with a molding groove 11 in which a component base material is disposed at a central portion thereof; A first and a second fixing units 122 and 123 arranged in a lower portion of the supporting unit 121 to stably hold the supporting unit 121; A balancing unit 15 disposed below the first and second fixed units 122 and 123; And a base unit 14 connected by a balance unit 15 and a fixing member 13. [

The forming groove 11 can be formed into a shape suited to the shape of the part to be molded, and the molding holes 112a and 112b can be formed in the case of a part having a hole. The forming groove 11 may have an arrangement region 111 corresponding to the entire cross-sectional area of the component and the arrangement region 111 may be a groove shape having an inner peripheral wall contacting at least a part of the peripheral surface of the component base material. have. The compression cut portion 113 can be formed in the molding groove 11 according to the shape of the component to be molded. For example, a press mold for a flange corresponding to a small automobile part that fixes different conduits to another predetermined device can be prepared. The die mold 10 for the flange includes a forming groove 11 having two forming holes 112a and 112b having different diameters and a compression cutting portion 113 having an opening groove formed on one side thereof .

The first and second fixing units 122 and 123 may be in the form of plates having the same or different thicknesses and may be made to have the same contact surface as the supporting unit 121. [ The first and second fixing units 122 and 123 allow the component base material to be fixed at a predetermined position in the molding process while stably holding the supporting unit 121. Since the die metal mold 10 is formed of a plurality of plate laminated structures, the component base material can be stably fixed and pressure is applied in a stepwise manner in the pressing process. A dispersion unit 124 may be provided between the first and second fixed units 122 and 123 and the balance unit 15. [ The dispersing unit 124 has a function of dispersing the pressure applied by the punch members 211 and 212 and has a function of relieving vibrations generated in the molding holes 112a and 112b and transmitted to the balance unit 15 have. The dispersing unit 124 may be selectively installed.

The balance unit 15 can be formed into a plate shape having a relatively large thickness and contact area as compared with the supporting unit 121 or the first and second fixing units 122 and 123. [ The balancing unit 15 can be made to have an appropriate level of flatness and can be made of a material or shape capable of absorbing shocks or vibrations. The pressure applied to the balancing unit 15 in the pressing process can be transmitted to the base unit 14 via the fixing member 13. [ The base unit 14 can be made in a structure similar to the balance unit 15. Further, the die guide 10 is provided with the pressure inducing members 161 and 162, so that the punch die 20 can be moved up and down. The pressure inducing members 161 and 162 will be described below again.

The first and second fixed units 122 and 123 and the dispersing unit 124 described above may have the function of a pressure distribution unit that alleviates or disperses pressure or vibration generated in the pressing process. The pressure-distributing unit may be formed in multiple layers, and the number of layers overlapping each other is an example, and the present invention is not limited thereto.

At least one punch member (211, 212) for forming a hole in the component base material while being inserted into the machining holes (112a, 112b); A guide unit 22 that contacts the support unit 121 while inducing movement of the punch members 211 and 212 in the pressing process; A pushing unit 23 arranged to be able to separate and contact the guide unit 22 and move the punch members 211 and 212 to the front side of the guide unit 22; And a punch balancing unit (24) for transmitting pressure to the pressurizing unit (23).

The punch members 211 and 212 may be formed to correspond to the machining holes to be formed in the parts, and may extend with different diameters. Specifically, the punch members 211 and 212 are composed of a portion extending by one diameter and a portion extending by two diameters smaller than the one diameter, and the boundary portion between the one diameter and the two diameters has a function of a stopper in the hole forming process . The hole can be formed in the component base material by the portion corresponding to the two diameters.

One end of each of the punch members 211 and 212 is fixed to the pressurizing unit 23 and the punch members 211 and 212 can be arranged to be movable with respect to the guide unit 22. The guide unit 22 and the pressurizing unit 23 can be combined to allow relative movement. In such a structure, the guide unit 22 and the pressurizing unit 23 can be separated from each other in the upper punching die 20 as shown in Fig. 1A (B) for molding the part base material. The guide unit 22 can be brought into contact with the supporting unit 122, as shown in Fig. 1B (a) for forming the component base material. When the positions of the die die 10 and the punching die 20 are determined, a pressure is applied to the punch balancing unit 24 so that the punch balancing unit 24 and the pressurizing unit 24, as shown in Fig. The unit 23 is moved downward and is brought into contact with the guide unit 22 so that the punch members 211 and 212 are moved downward to form a machining hole in the component base material so that the end portions of the punch members 211 and 212 It can be inserted into the molding hole. Then, the pressure of the compression cut portion 113 is applied, so that the component base material can be formed into a predetermined shape.

As described above, the guide unit 22 and the pressurizing unit 23 are arranged so as to be separable from each other, and the guide unit 22 is first brought into contact with the support unit 122 to firmly fix the component base material to a predetermined position, The machining hole is formed by the unit 23 so that the error of the molded part is reduced.

The die mold 10 or the punch mold 20 can be formed in various structures and the molding holes 112a and 112b into which the punch members 211 and 212 and the punch members 211 and 212 are inserted are formed by the punch member 211 And 212. In this case,

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

Referring to FIG. 2, the punch members 211 and 212 may be paired and may have different diameters. Hole machining portions 211a and 212a may be formed in the respective punch members 211 and 212 and the hole machining portions 211a and 212a may have a shape corresponding to the diameter of the machining hole and the punch member 211 212, 212, respectively.

The pressure members 261 and 262 to which the pressure applied by the punch members 211 and 212 are transmitted may be disposed in the die metal mold. The pressure members 261 and 262 can be formed into a cylindrical shape and the upper portions of the pressure members 261 and 262 are disposed in the arrangement region 111 formed in the molding groove so as to face the punch members 211 and 212, Can be inserted. When the component base material M is disposed in the arrangement region 111 of the forming groove, it can be fixed by the fixing pins 251 and 252 and its movement can be restricted. The fixing pins 251 and 252 may have a function of restricting the movement of the component base material M and preventing a certain portion of the component base material M from being pushed and deformed in the pressing process. The pressure members 261 and 262 can be positioned by the fixing holes 271 and 272 formed in the arrangement part 111. [ The pressure concentrated on the machining hole portion in the process of forming the machining hole in the component base material M by the punching members 211 and 212 can be transmitted to the pressure members 261 and 262, The component base material M can be fixed at a predetermined position of the placement part 111. [0054] The punch members 211 and 212 or the pressure members 261 and 262 can be made of a material having a relatively high hardness. The inner surfaces of the fixing holes 271 and 272 of the arrangement part 111 or the outer circumferential surfaces of the punch members 211 and 212 may be coated with a material such as a cemented carbide to prevent deformation.

The punch members 211 and 212 or the pressure members 261 and 262 can be formed into various structures by various materials having high hardness and the present invention is not limited to the illustrated embodiments.

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

Referring to FIG. 3, the arrangement region 111 where the component base material is fixed is a flange shape, and the formation holes 112a and 112b having different diameters may be formed in the arrangement region 111. FIG. A pair of pressure guiding members 161 and 162 may be disposed in the balance unit 14 and each pressure guiding member 161 and 162 may be inserted into the guide holes 31a and 32a formed in the punch die . Each of the pressure-guiding members 161 and 162 is provided with induction cylinders 31 and 32 which are formed with slip prevention protrusions on the circumferential surface and which are movable up and down, and resilient members such as elasticity which are disposed below the induction cylinder, Units 311 and 321, respectively.

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

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

FIG. 4A shows an embodiment of a method for manufacturing a small automobile part according to the present invention, and FIG. 4B shows an embodiment of a flange corresponding to a part of a vehicle manufactured by the manufacturing method according to the present invention.

Referring to Fig. 4, a miniature automotive part such as, for example, a flange may include a step (P41) of preparing a die mold having the shape of a part; Disposing an aluminum or aluminum alloy part base material on the die die (P42); (P44) fixing the component base material to the predetermined position of the die by the fixing pin; Preparing a punch mold having a punch member corresponding to the die die (P44); Setting a press process condition (P45); Lowering the guide unit of the punch mold and bringing it into contact with the die die (P46); A step (P47) of determining the position of the punch member; And a step (P48) of pressing the component base material while the punch member is lowered by the descent of the pressurizing unit.

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

The die body and the punch die form a part body 41 as shown in FIG. 4B and a small automobile part having one and two processing holes 421 and 422 and a fastening inlet 43 penetrating the part body 41 The corresponding flange 40 can be formed. The first and second processing holes 421 and 422 are formed by the punch member, and the fastening inlet 43 can be formed by the cutting step. The flange 40 is molded by the die die and the punch die, and the four steps of manufacturing process such as one machining hole 421 machining, two machining hole machining 422, top face chamfering and bottom face chamfering are performed in a pressing process .

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 embodiments shown.

The press mold according to the present invention allows a small automobile part such as a flange to be manufactured by press working. By such pressing, small automobile parts manufactured through a plurality of cutting processes such as hole processing, top surface finishing, and bottom surface finishing can be made into one process. The method according to the invention allows a variety of small automotive parts which can be made of aluminum or an aluminum alloy to be made in a mold suitable for it. Thus, the production efficiency of the mass production process can be improved while ensuring uniform part quality irrespective of the skill level of the operator.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

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

Claims (2)

A press mold for manufacturing a small automobile part comprising a die mold (10) and a punch mold (20)
The die mold 10
A supporting unit 121;
A molding groove (11) formed in the supporting unit (121) and formed with molding holes (112a, 112b) having two different diameters; And
And pressure members 261 and 262 formed below the molding holes 112a and 112b,
The punch die (20)
Punch members (211, 212) inserted into the molding holes (112a, 112b) to press the pressure members (261, 262);
A guide unit 22 for guiding the movement of the punch members 211 and 212; And
And a pressing unit (23) movably arranged with respect to the guide unit (22)
The punch members 211 and 212 are formed of a portion extending by one diameter and a portion extending by two diameters smaller than the one diameter, and a boundary portion between the one diameter and the two diameters has a function of a stopper in the hole forming process, Flow holes 211a and 211b are formed in the center portion of the end portions of the punch members 211 and 212 in the shape of a concave lens and the forming groove 11 is formed in a compression cut portion 113). ≪ RTI ID = 0.0 > 11. < / RTI > The press mold according to claim 1, wherein the die mold (10) further comprises at least one pressure distributing unit (122, 123, 124) for dispersing the pressure on the lower surface of the support unit (121) .

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