KR101668625B1 - Hemming device of plate member and memming method using the same - Google Patents

Hemming device of plate member and memming method using the same Download PDF

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Publication number
KR101668625B1
KR101668625B1 KR1020150073792A KR20150073792A KR101668625B1 KR 101668625 B1 KR101668625 B1 KR 101668625B1 KR 1020150073792 A KR1020150073792 A KR 1020150073792A KR 20150073792 A KR20150073792 A KR 20150073792A KR 101668625 B1 KR101668625 B1 KR 101668625B1
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KR
South Korea
Prior art keywords
panel
emf
holder
electromagnetic coil
hemming
Prior art date
Application number
KR1020150073792A
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Korean (ko)
Inventor
주진홍
이문용
Original Assignee
주식회사 성우하이텍
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Priority to KR1020150073792A priority Critical patent/KR101668625B1/en
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Publication of KR101668625B1 publication Critical patent/KR101668625B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Resistance Welding (AREA)

Abstract

The present invention provides a hemming device for a plate and a hemming method using the same. The hemming device for a plate, which couples a first panel to a second panel by bending a part of the first panel, comprises: an EMF holder where an electromagnetic coil is installed on one surface thereof; a power part which generates electromagnetic force in the first panel facing the electromagnetic coil by applying a pulse to the electromagnetic coil to bend a part of the first panel; and a moving part which moves the EMF holder.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a hemming apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hemming device for a plate material and a hemming method using the hemming device. More particularly, the present invention relates to a hemming device for bending an edge flange portion of an outer panel of an automobile body by an electromagnetic repulsive force, And a hemming method using the same.

The car body is the first step in the automobile manufacturing process. After the product panel is produced through various kinds of press devices, it is transferred to the body shop, and each part of the product panel is assembled to form a white body (B.I.W) body.

In order to mold the panel in this way, it is necessary to press and form a certain shape through various kinds of press equipment, and then to cut and cut in a pressing process such as trimming, piercing, flanging and hemming, Hole processing, bending, warping, and the like.

FIG. 1 is a schematic diagram of a conventional hemming apparatus. The roller hemming apparatus 100 is mounted on the tip of an arm 103 of a robot 101 composed of a multi-joint arm, The flange F of the outer panel 109 is folded toward the front end side of the inner panel 107 and pressed to be hemmed while moving along the edge portions of the inner panel 107 and the outer panel 109 on the inner panel 107 .

The roller hemming device 100 is provided with arms 104 and 105 of the articulated robot 101 moving along a style line (i.e., an edge line of the panel) of the jig 105 supporting the inner panel 107 and the outer panel 109. [ A driving motor 111 is attached to the front end of the driving motor 111. A preliminary hemming roller 113 as shown in FIG. 1 is mounted on the rotating shaft of the driving motor 111 or a main hemming roller .

In order to hemming the inner panel 107 and the outer panel 109 using the roller hemming apparatus 100 configured as described above, the inner panel 107 and the outer panel 109 Clamping unit (not shown) is clamped.

Next, the articulated robot 101, which performs the operation set by the robot control panel 300 for each molded product, moves the preliminary hemming roller 113 along the edges of the inner panel 107 and the outer panel 109 according to the set behavior While the flange (F) portion of the outer panel 109 is preliminarily hemming at an angle of about 45 degrees.

A sealer (not shown) is previously applied to the inner panel of the flange F in the next step, and the main hemming roller (not shown) .

On the other hand, as a conventional technique, a hemming operation using a roller or a hemming operation using a press is expensive, and it is difficult to replace a working tool such as a roller / press for a hemming operation, , It is difficult to flexibly respond to various vehicle types.

SUMMARY OF THE INVENTION An object of the present invention is to provide a hemming apparatus for a plate material and a hemming method using the same, which are relatively inexpensive in equipment investment for hemming work, easy replacement of a work tool for hemming work, .

As described above, according to the embodiment of the present invention, a hemming device for bending a part of a first panel and coupling the first panel to a second panel includes an EMF holder having an electromagnetic coil mounted on one surface thereof, a part of the first panel A power unit for applying an electromagnetic pulse to the electromagnetic coil to form an electromagnetic force on the first panel facing the electromagnetic coil, and a moving unit for moving the EMF holder.

The moving unit may include a robot that moves or rotates the EMF holder through a predetermined route.

The moving part including a cylinder arranged to push or pull the EMF holder; And the operation of the cylinder allows the EMF holder to be arranged to rotate about the hinge.

The second panel may be an outer panel disposed on an outer side of the vehicle body, and the first panel may be an inner panel disposed on the inner side of the vehicle body.

And a control unit for controlling the movement of the EMF holder through the moving unit and controlling a pulse applied to the electromagnetic coil through the power unit.

According to an embodiment of the present invention, there is provided a method of hemming a plate using a hemming device, the method comprising: contacting one surface of a first panel and a second panel; applying a pulse to the electromagnetic coil to apply an electromagnetic force to the first panel; And bending a portion of the first panel using the electromagnetic force and bringing the bent portion into close contact with the second panel so as to overlap the edge of the second panel.

And moving the EMF holder along a direction in which the first panel is bent, the EMF holder including the electromagnetic coil mounted on one surface thereof.

Bending a part of the first panel at a first predetermined angle in a first step of bending a part of the first panel and bending a part of the second panel secondarily at a second setting angle ≪ / RTI >

The first setting angle may be 90 degrees, and the second setting angle may be 45 degrees.

And a cylinder or a robot for moving the EMF holder, and the movement of the EMF holder can be controlled by controlling the cylinder or the robot to form a constant electromagnetic force between the electromagnetic coil and the first panel.

According to the present invention for achieving the above object, the flange portion of the outer panel is bent by using an electromagnetic repulsive force without directly contacting with the outer panel, so that the flange portion of the outer panel is fundamentally prevented from generating a scratch or crack can do.

In addition, by bending various types of outer panels using one EMF holder, the investment cost of the equipment for the hemming operation is reduced, the work tool for the hemming work is easily replaced, and various types of vehicles can be flexibly handled.

Fig. 1 is a schematic configuration diagram of a conventional hemming apparatus.
2 is an overall configuration diagram of a hemming device according to an embodiment of the present invention.
3 is a side cross-sectional view showing the step of bringing the first panel into close contact with the second panel in the hemming operation according to the embodiment of the present invention.
4 is a side cross-sectional view showing a step of firstly raking a part of the first panel in the hemming operation according to the embodiment of the present invention.
5 is a side sectional view showing a step of secondarily raking a part of the first panel in the hemming operation according to the embodiment of the present invention.
6 is a cross-sectional side view showing a step of bonding a part of the first panel to the second panel in the hemming operation according to the embodiment of the present invention.
7 is a flowchart illustrating a method of hemming a plate using a hemming device according to an embodiment of the present invention.
8 is an overall configuration diagram of a hemming apparatus according to another embodiment of the present invention.

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

2 is an overall configuration diagram of a hemming device according to an embodiment of the present invention.

2, the overall structure of the hemming device includes a jig 105, an outer panel 109, an inner panel 107, a flange portion F, an electromagnetic force generating portion 205, an electromagnetic coil 206, an EMF A holder 200, an arm 103, a robot 102, a power unit 260, and a control unit 250. [

The outer panel 109 is placed on the jig 105 and the inner panel 107 is brought into close contact with the outer panel 109. The flange F formed at the edge of the outer panel 109 And is in close contact with one surface of the inner panel 107. Accordingly, the outer panel 109 and the inner panel 107 are bonded to each other.

In order to bend the flange portion F of the outer panel 109, an EMF holder 200 is disposed. An electromagnetic force generating unit 205 is disposed on the front surface of the EMF holder 200 and an electromagnetic coil 206 is disposed on the electromagnetic force generating unit 205.

A moving part for moving the EMF holder 200 is disposed and the moving part includes the robot 102 and the arm 103 or includes the cylinder 800 of FIG. Alternatively, the EMF holder 200 can be moved and rotated in the three-dimensional space through the arm 103.

The power unit 260 is disposed to apply a pulse current to the electromagnetic coil 206. When a pulse current is applied to the electromagnetic coil 206, an electromagnetic repulsion force is generated between the electromagnetic coil 206 and one surface of the outer panel 109 Lt; / RTI >

The flange portion F of the outer panel 109 is bent by the electromagnetic force force generated between the outer panel 109 and the electromagnetic coil 206 so that the outer panel 109 is bent, And the inner panel 107 are in close contact with each other.

The control unit 250 controls the robot 102 and the power unit 260 to control the position and rotation of the EMF holder 200 and to bend the flange portion F of the outer panel 109 do.

The control unit 250 may be implemented by one or more microprocessors operating according to a set program, and the set program may include a series of instructions for performing a method according to an embodiment of the present invention to be described later.

Hereinafter, in an embodiment of the present invention, the outer panel may be referred to as a first panel, and the inner panel may be referred to as a second panel.

3 is a side cross-sectional view showing a step of bringing a first panel into close contact with a second panel in a hemming operation according to an embodiment of the present invention. Referring to FIG. 3, the outer panel is disposed on the jig, The inner panel is disposed.

The flange portion F at the edge of the outer panel 109 is disposed so as to protrude at a predetermined distance from the side surface of the jig 105.

4 is a side cross-sectional view showing a step of firstly raking a part of the first panel in the hemming operation according to the embodiment of the present invention.

4, a pad 400 is disposed on the upper surface of the inner panel 107, and the pad 400 is urged downward to closely contact the inner panel 107 with the outer panel 109 .

The EMF holder 200 is disposed on the lower side of the flange portion F so that the outer surface of the electromagnetic force generating portion 205 faces the lower surface of the flange portion F. [

A pulse is applied to the electromagnetic coil 206 of the electromagnetic force generating unit 205 to bend the flange portion F of the outer panel 109 by about 90 degrees. At this time, the position of the EMF holder 200 is adjusted such that the electromagnetic force generating portion 205 of the EMF holder 200 faces a face of the flange portion F with a predetermined distance.

In the embodiment of the present invention, in the first-order preliminary hemming process of Fig. 4, a voltage of about 5 KV may be applied to the electromagnetic coil.

5 is a side sectional view showing a step of secondarily raking a part of the first panel in the hemming operation according to the embodiment of the present invention.

Referring to FIG. 5, the pad is removed from the inner panel 107, and the EMF holder 200 is disposed to face the flange portion F of the outer panel 109. A pulse is applied to the electromagnetic coil 206 of the electromagnetic generator 205 and the EMF holder 200 is rotated to further bend the flange portion of the outer panel 109 by about 45 degrees.

In the embodiment of the present invention, in the second-order preliminary hemming process of Fig. 5, a voltage of about 5 KV may be applied to the electromagnetic coil 206.

A sealing member may be applied to one surface of the flange portion F that is joined to the upper surface of the inner panel 107, which refers to a known technique.

6 is a cross-sectional side view showing a step of bonding a part of the first panel to the second panel in the hemming operation according to the embodiment of the present invention.

6, the EMF holder 200 is disposed to face the flange portion F of the outer panel 109, and a pulse current is applied to the electromagnetic coil 206 of the electromagnetic generation unit 205 And the flange portion F of the outer panel 109 is bent by rotating the EMF holder 200 so that the flange portion F of the outer panel 109 is inserted into the inner panel 107 .

In the embodiment of the present invention, in the main-hemming molding of Fig. 6, a voltage of about 5 KV may be applied to the electromagnetic coil 206. Fig.

7 is a flowchart illustrating a method of hemming a plate using a hemming device according to an embodiment of the present invention.

7, the outer panel 109 is disposed on the jig 105 through a loading device (not shown) in step S700, and the inner panel 109 is mounted on the outer panel 109 using the pad 400 107).

The moving device moves the EMF holder 200 to the lower side of the flange portion F of the outer panel 109 in S710 and the power portion 260 moves the electromagnetic coil 200 of the EMF holder 200 The flange portion F of the outer panel 109 is first bent about 90 degrees by applying a pulse current to the flange portion 206. [

In S730, the EMF holder 200 is moved / rotated to face the flange portion F. In S740, the power portion 260 applies a pulse to the electromagnetic coil 206 of the EMF holder 200 The flange portion F of the outer panel 109 is bent by about 45 degrees in the second place.

In step S750, the EMF holder 200 is moved / rotated so as to face the flange part F. In step S760, the power unit 260 applies a pulse current The flange portion F of the outer panel 109 is finally bent to join the flange portion F of the outer panel 109 to the inner panel 107. [

8 is an overall configuration diagram of a hemming apparatus according to another embodiment of the present invention.

8, the overall configuration of the hemming device includes a jig 105, an outer panel 109, an inner panel 107, a flange portion F, an electromagnetic force generating portion 205, an electromagnetic coil 206, an EMF A holder 200, a cylinder 800, a power unit 260, and a control unit 250.

The outer panel 109 is placed on the jig 105 and the inner panel 107 is brought into close contact with the outer panel 109 and the flange F of the outer panel 109 is bent .

In order to bend the flange portion F of the outer panel 109, an EMF holder 200 is disposed. An electromagnetic force generating unit 205 is disposed on the front surface of the EMF holder 200 and an electromagnetic coil 206 is disposed on the electromagnetic force generating unit 205.

The cylinder 800 for moving the EMF holder 200 is disposed and the cylinder 800 pushes or pulls the center of the rear surface of the EMF holder 200. The EMF holder 200 has a structure And can be rotated through the hinge 810.

The power unit 260 is disposed to apply a pulse current to the electromagnetic coil 206. When the pulse current is applied to the electromagnetic coil 206, the electromagnetic coil 206 and the outer surface of the outer panel 109, An electromagnetic repulsive force is generated between one surface of the support portion F and the other surface.

The flange portion F of the outer panel 109 is bent by the electromagnetic force force generated between the outer panel 109 and the electromagnetic coil 206 so that the outer panel 109 is bent, And the inner panel 107 are in close contact with each other.

The control unit 250 controls the position and rotation of the EMF holder 200 by controlling the cylinder 800 and the power unit 260 and controls the position of the electromagnetic Bend it with repulsive force.

A method of bending the outer panel 109 by applying a pulse current to the electromagnetic coil 206 according to an embodiment of the present invention uses a method of electro-magnetic forming, / It is a kind of cold forming, it can be applied to conductive metal, copper or aluminum.

In the electromagnetic forming, the workpiece is formed by a high-density pulse-type electromagnetic force, in which a current pulse applied to the electromagnetic coil induces a current pulse corresponding to the workpiece, and electromagnetic repulsive force is generated between the electromagnetic coil and the workpiece, This electromagnetic repulsive force forms the workpiece.

In such electromagnetic molding, it is possible to eliminate the occurrence of scratches and the like on the workpiece by molding the workpiece without contacting the workpiece with the workpiece, and the workpiece can be molded in various forms and various forms .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

102: robot 103: arm
105: Jig 107: First panel
109: second panel 200: holder
205: Electromagnetic force generating unit 206: Electromagnetic coil
250: control unit 260: power unit
400: Pad 800: Cylinder
810: Hinge F: Flange

Claims (10)

A hemming device for bending the edge flange portion of the first panel and coupling the first panel to the second panel,
The hemming device comprises:
An EMF holder mounted on one surface of the electromagnetic coil;
A power unit for applying a pulse to the electromagnetic coil so as to bend the flange portion of the first panel to form an electromagnetic outbreak force on the flange portion facing the electromagnetic coil;
A robot for moving or rotating the EMF holder through a predetermined route and a cylinder arranged to push the EMF holder or to rotate the EMF holder around the hinge and to move the EMF holder to a set route Moving part; And
A control unit for controlling movement of the EMF holder using the robot and the cylinder of the moving unit and controlling pulses applied to the electromagnetic coil through the power unit; Lt; / RTI >
Wherein,
And controls the moving part to move the EMF holder in a direction in which the flange part is bent so that a certain electromagnetic repulsive force is formed between the electromagnetic coil and the flange part. delete delete The method of claim 1,
Wherein the second panel is an outer panel disposed on an outer side of the vehicle body, and the first panel is an inner panel disposed on the inner side of the vehicle body. delete delete delete delete delete delete
KR1020150073792A 2015-05-27 2015-05-27 Hemming device of plate member and memming method using the same KR101668625B1 (en)

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KR1020150073792A KR101668625B1 (en) 2015-05-27 2015-05-27 Hemming device of plate member and memming method using the same

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Application Number Priority Date Filing Date Title
KR1020150073792A KR101668625B1 (en) 2015-05-27 2015-05-27 Hemming device of plate member and memming method using the same

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109013820A (en) * 2018-07-24 2018-12-18 广东工业大学 Flexible plate electro-magnetic forming system
CN117238686A (en) * 2023-09-14 2023-12-15 浙江金莱勒电气有限公司 Isolating switch with remote brake separating mechanism and production process thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000158064A (en) * 1998-11-20 2000-06-13 Sunrise Msi Kk Hemming method
JP2004130349A (en) * 2002-10-10 2004-04-30 Kobe Steel Ltd Method for forming aluminum alloy outer panel
JP2006061931A (en) * 2004-08-25 2006-03-09 Honda Motor Co Ltd Hemming apparatus
JP2008254000A (en) * 2007-03-30 2008-10-23 Kobe Steel Ltd Hemming method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000158064A (en) * 1998-11-20 2000-06-13 Sunrise Msi Kk Hemming method
JP2004130349A (en) * 2002-10-10 2004-04-30 Kobe Steel Ltd Method for forming aluminum alloy outer panel
JP2006061931A (en) * 2004-08-25 2006-03-09 Honda Motor Co Ltd Hemming apparatus
JP2008254000A (en) * 2007-03-30 2008-10-23 Kobe Steel Ltd Hemming method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109013820A (en) * 2018-07-24 2018-12-18 广东工业大学 Flexible plate electro-magnetic forming system
CN109013820B (en) * 2018-07-24 2024-05-14 广东工业大学 Electromagnetic forming system for flexible plate
CN117238686A (en) * 2023-09-14 2023-12-15 浙江金莱勒电气有限公司 Isolating switch with remote brake separating mechanism and production process thereof
CN117238686B (en) * 2023-09-14 2024-02-20 浙江金莱勒电气有限公司 Isolating switch with remote brake separating mechanism and production process thereof

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