KR100790774B1 - Punch press system - Google Patents

Punch press system Download PDF

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Publication number
KR100790774B1
KR100790774B1 KR1020060117873A KR20060117873A KR100790774B1 KR 100790774 B1 KR100790774 B1 KR 100790774B1 KR 1020060117873 A KR1020060117873 A KR 1020060117873A KR 20060117873 A KR20060117873 A KR 20060117873A KR 100790774 B1 KR100790774 B1 KR 100790774B1
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KR
South Korea
Prior art keywords
mold
bumper
punch press
forming
molding
Prior art date
Application number
KR1020060117873A
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Korean (ko)
Inventor
구도회
김재근
Original Assignee
주식회사 성우하이텍
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Application filed by 주식회사 성우하이텍 filed Critical 주식회사 성우하이텍
Priority to KR1020060117873A priority Critical patent/KR100790774B1/en
Application granted granted Critical
Publication of KR100790774B1 publication Critical patent/KR100790774B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/88Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/02Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
    • B21D7/028Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member and altering the profile at the same time, e.g. forming bumpers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B7/00Presses characterised by a particular arrangement of the pressing members
    • B30B7/04Presses characterised by a particular arrangement of the pressing members wherein pressing is effected in different directions simultaneously or in turn

Abstract

A punch press system is provided to improve productivity and lower product cost by performing a stretch bending process and a press forming process through one process within one punch press system, thereby reducing the number of processes. A punch press system comprises: a lower mold(1) which has a forming face(F1) formed on the center of an upper face thereof and has flat cylinder mounting faces(F2) formed on both side portions thereof, and which is mounted on a bolster under the lower mold; an upper mold(3) which is installed above the lower mold, which has a pressing face(F3) formed on a lower face thereof correspondingly to the forming face, and which is mounted on a slider above the upper mold; both drive cylinders which are horizontally mounted on the cylinder mounting faces at both sides of the lower mold such that each of the both drive cylinders faces the forming face at the center of the lower mold; and stretch steels(13,15) respectively mounted on front ends of respective operating rods(9,11) of the both drive cylinders such that the stretch steels are operated correspondingly to respective side faces of both ends of a bumper beam(10) placed on the forming face of the lower mold.

Description

Punch Press Device {PUNCH PRESS SYSTEM}

1 is a partial perspective view of a bumper beam for a vehicle manufactured by a general roll forming molding.

2 is a partial perspective view of a bumper beam for a vehicle in which an end portion is press-molded by a punch press device according to an embodiment of the present invention.

3 is a side cross-sectional view of a punch press device according to an embodiment of the present invention.

4 to 6 is a step-by-step operating state diagram of the punch press device according to an embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch press apparatus, and more particularly, after forming stretch bending on each side of both ends of a bumper beam for a vehicle manufactured by roll forming molding, continuously pressing and molding the bumper beam in one machining step. It relates to a punch press device to minimize the thickness of both ends of the.

In general, until the automobile manufacturers produce cars, about 20,000 to 30,000 parts are made through dozens of assembly processes.

In particular, a bumper beam is formed in front and rear of the vehicle body as a part of the vehicle body, and the bumper beam forms a front and rear bumper together with a shock absorbing member and a bumper cover surrounding the front part thereof.

The conventional configuration of the bumper beam is constructed by welding two rail members formed by press molding. However, in order to improve productivity, a recently produced bumper beam is constructed in one piece having a closed cross section by roll forming molding.

As described above, the vehicle bumper beam 101 produced by roll forming molding is symmetrically formed on both sides with respect to the center so as to form a closed section S in two places as shown in FIG. 1. It is characterized by being molded in a constant shape along its longitudinal direction.

However, in the case of the bumper beam 10 manufactured by such a roll forming molding, both end portions EP are formed to have the same thickness T as the center portion, and both ends EP interfere with the bumper cover (not shown) when the vehicle body is applied. This occurs, or it is difficult to secure the space in this portion has a disadvantage of low design freedom.

Therefore, as shown in FIG. 2, the end portion EP of the bumper beam 201 is reduced in pressure to reduce the cross-sectional thickness T of the both ends EP, thereby securing space between the bumper cover and design freedom. By increasing the design of the bumper cover, you can realize the beautiful design.

However, in order to pressurize the both ends EP of the bumper beam 201 beautifully, each side of the both ends EP of the bumper beam 201 must be pressurized up and down after first forming the bending bending. Conventionally, for this purpose, a stretch bending process on each side of each side of the bumper beam 201 and a press forming process on the upper and lower sides of the bumper beam 201 have been separately performed. There is a problem that causes a cost increase.

Therefore, the present invention was created in order to solve the above problems, and an object of the present invention is to form both sides of both ends of a bumper beam for a vehicle manufactured by roll forming molding, and then stretch the both ends of the upper and lower ends in succession. It is to provide a punch press device that can be formed by pressure forming the molding to minimize the thickness of both ends of the bumper beam in one machining process.

The punch press device according to the present invention for realizing the above object is

A lower mold which is formed at the center of the upper surface and forms a flat cylinder mounting surface at both sides thereof and is mounted to the lower bolster; An upper mold mounted on the upper slider by forming a pressing surface on a lower surface corresponding to the molding surface at an upper portion of the lower mold; Two side driving cylinders mounted in a horizontal direction toward the center forming surface, respectively, on both side cylinder mounting surfaces of the lower die; It includes stretch steel mounted to each of the working rod front end of the two-side drive cylinder to operate in correspondence with each side of both ends of the bumper beam seated on the molding surface of the lower die.

The molding surface of the lower mold includes a seating surface recessed in correspondence to both sides of the protruding lower surface of the bumper beam to be molded; And a support surface protruding corresponding to the recess portion in the center of the recessed lower surface of the bumper beam to be shaped to support to limit the molding deformation of the recess portion, wherein the pressing surface of the upper mold has upper surfaces at both ends of the bumper beam to be molded. It is characterized in that it is formed in a flat section so as to contact the same pressing force.

The drive cylinder is preferably made of a hydraulic cylinder whose hydraulic pressure is hydraulic, and the stretch steel is characterized in that a surface corresponding to each side of each end of the bumper beam to be formed is formed as a round surface.

Hereinafter, the preferred configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

3 is a side cross-sectional view of a punch press device according to an embodiment of the present invention.

As shown in FIG. 3, the punch press apparatus according to the embodiment of the present invention includes a lower mold 1, an upper mold 3 at an upper portion thereof, and two side working cylinders configured at both sides of the lower mold 1 ( 5,7 and both stretch steels 13,15 mounted at the tip of each actuating rod 9,11 of the actuating cylinders 5,7.

First, the lower mold 1 forms a molding surface F1 at the center of the upper surface thereof, and forms a flat cylinder mounting surface F2 at both sides thereof, and is mounted on the lower bolster.

Here, the molding surface F1 of the lower mold 1 is recessed corresponding to both sides of the protruding lower surface of the bumper beam 10 to be molded to form a seating surface 21. In addition, the support surface 23 is formed to protrude so as to correspond to the concave portion 17 in the center of the concave lower surface of the bumper beam 10 to be formed so as to limit the molding deformation of the concave portion 17. .

At this time, the upper surface of the support surface 23 is preferably formed in a concave round shape so that the deformation of the inner end surface of the recessed portion 17 of the bumper beam 10 is symmetrically guided.

In addition, the upper mold 3 is mounted on the upper slider not shown by forming a pressing surface F3 on the lower surface corresponding to the molding surface F1 of the lower mold 1 at the upper portion of the lower mold 1.

Here, the pressing surface (F3) of the upper die (3) is preferably formed in a flat cross-section so as to contact the upper surface of both ends of the bumper beam 10 to be molded in the same pressing force.

In addition, on both cylinder mounting surfaces F2 of the lower mold 1, the drive cylinders 5 and 7 are mounted in the horizontal direction toward the molding surface F1 at the center of the lower mold 1, respectively.

It is preferable that the drive cylinders 5, 7 consist of hydraulic cylinders whose operation is hydraulic.

In addition, stretch steels 13 and 15 are mounted at the front end of each of the driving rods 9 and 11 of the driving cylinders 5 and 7, respectively, and the stretch steels 13 and 15 are formed on the molding surface of the lower mold 1. It is arranged to be accessible through both side portions of the lower mold 1 and the upper mold 3 so as to be bent to correspond to respective side surfaces of both ends of the bumper beam 10 seated on the F1.

It is preferable that the stretch steel 13 and 15 have a surface corresponding to each side of each end of the bumper beam 10 to be formed to have a round surface RF.

Therefore, the operation of the punch press device having the configuration as described above, as shown in FIG. 3, the bumper beam 10 to be first formed between the molding surface (F1) of the lower mold 1 and the pressing surface (F3) of the upper mold (10). As shown in FIG. 4, both drive cylinders 5 and 7 are driven forward by a predetermined stroke, with the end portion of the rod inserted and loaded.

Then, the round surfaces RF of each of the stretch steels 13 and 15 configured at the tip of each of the driving rods 9 and 11 of the two driving cylinders 5 and 7 are in contact with the centers of both sides of the end of the bumper beam 10. By pressing in a state to achieve a stretch bending (STRETCH BENDING) molding operation in the center of both sides of the end of the bumper beam (10).

Accordingly, both side surfaces of the end portion of the bumper beam 10 are bent inwardly, and as shown in FIG. 5, the both driving cylinders 5 and 7 are driven backward and both sides of the stretch steel 13, 15) is removed from both sides of the upper mold (3) and the lower mold (1).

In this state, as shown in FIG. 6, when the upper die 3 is driven downward, the pressing surface F3 of the upper die 3 is driven by the bumper beam 10 with respect to the forming surface F1 of the lower die 1. Pressing the upper end surface evenly against the front to form a forming.

As described above, the bumper beam 10 having both ends of the stretch bending forming and the forming forming is formed in one press die, and as shown in FIG. The cross section thickness is reduced.

According to the punch press apparatus of the present invention as described above, after forming the bending bending on each side of both ends of the bumper beam for the vehicle produced by the roll forming molding, the upper and lower surfaces of the both ends are continuously press-formed to form a single machining step By minimizing the thickness of both ends of the bumper beam, the conventional stretch bending molding process and the press forming molding process can be performed separately in one punch press in one process. It has the effect of improving the productivity and lowering the product cost.

Claims (5)

  1. In the punch press apparatus,
    A lower mold which is formed at the center of the upper surface and forms a flat cylinder mounting surface at both sides thereof and is mounted to the lower bolster;
    An upper mold mounted on the upper slider by forming a pressing surface on a lower surface corresponding to the molding surface at an upper portion of the lower mold;
    Two side driving cylinders mounted in a horizontal direction toward the center forming surface, respectively, on both side cylinder mounting surfaces of the lower die;
    And a stretch steel mounted on each end of each of the driving rods of the two driving cylinders so as to operate corresponding to each side of both ends of the bumper beams seated on the molding surface of the lower mold.
  2. The method of claim 1,
    The molding surface of the lower mold
    A seating surface recessed in correspondence with both sides of the protruding lower surface of the bumper beam to be formed;
    And a support surface which protrudes corresponding to the concave portion at the center of the concave lower surface of the bumper beam to be formed to support to limit the molding deformation of the concave portion.
  3. The method of claim 1,
    Pressing surface of the upper mold
    A punch press device, characterized in that formed in a flat cross-section so as to contact the upper surface of both ends of the bumper beam to be formed to apply the same pressing force.
  4. The method of claim 1,
    The drive cylinder
    A punch press device comprising a hydraulic cylinder that makes the working pressure hydraulic.
  5. The method of claim 1,
    The stretch steel
    A punch press device, characterized in that a surface corresponding to each side of both ends of the bumper beam to be formed is formed into a round surface.
KR1020060117873A 2006-11-27 2006-11-27 Punch press system KR100790774B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060117873A KR100790774B1 (en) 2006-11-27 2006-11-27 Punch press system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060117873A KR100790774B1 (en) 2006-11-27 2006-11-27 Punch press system

Publications (1)

Publication Number Publication Date
KR100790774B1 true KR100790774B1 (en) 2008-01-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060117873A KR100790774B1 (en) 2006-11-27 2006-11-27 Punch press system

Country Status (1)

Country Link
KR (1) KR100790774B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0161786B1 (en) * 1994-04-18 1999-01-15 사또 후미오 Press forming device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0161786B1 (en) * 1994-04-18 1999-01-15 사또 후미오 Press forming device

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