KR101784496B1 - Press apparatus and methods that operate - Google Patents

Press apparatus and methods that operate Download PDF

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Publication number
KR101784496B1
KR101784496B1 KR1020160025503A KR20160025503A KR101784496B1 KR 101784496 B1 KR101784496 B1 KR 101784496B1 KR 1020160025503 A KR1020160025503 A KR 1020160025503A KR 20160025503 A KR20160025503 A KR 20160025503A KR 101784496 B1 KR101784496 B1 KR 101784496B1
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KR
South Korea
Prior art keywords
metal plate
lower die
roller
press
roll
Prior art date
Application number
KR1020160025503A
Other languages
Korean (ko)
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KR20170103134A (en
Inventor
박성영
김동욱
Original Assignee
공주대학교 산학협력단
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Priority to KR1020160025503A priority Critical patent/KR101784496B1/en
Publication of KR20170103134A publication Critical patent/KR20170103134A/en
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Publication of KR101784496B1 publication Critical patent/KR101784496B1/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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/30—Deep-drawing to finish articles formed by deep-drawing
    • 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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • 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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/14—Recontouring
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/08—Dies with different parts for several steps in a process

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The present invention relates to a press apparatus and a method of operating the same, the press apparatus including a lower die on which a metal plate is placed and an upper die positioned above the lower die to press the metal plate, A roller inserted into the groove is formed on the upper surface of the lower die and moves along the surface of the projection on one side of the lower die to press the metal plate to improve the dimensional accuracy of the metal plate, After the metal mold is pressed by the rollers, the roll-to-roll process is performed so that the fatigue accumulation of the first press-formed mold due to the roll-to-roll process is prevented and the need for a large number of post-process molds for the roll- , A press apparatus in which the cost of press working is minimized and the movement of the metal plate material is minimized, Provides a method of operation.

Description

[0001] PRESS APPARATUS AND METHODS THAT OPERATE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press apparatus and an operating method thereof, and more particularly, to a press apparatus and an operating method thereof, in which an upper die and a lower die provided in a press apparatus press- To a press apparatus for secondary precision machining by pressurization and an operation method thereof.

The press forming is a method of inserting a metal plate between a metal mold including an upper die and a lower die and pressing the metal plate to deform the metal plate in the form of a mold formed on the upper die and the lower die.

As the metal plate material is restored to its original shape after processing, there is a possibility that the processed metal plate material is micro-deformed. Generally, in order to reduce defects due to such elastic restoration, a listike process of deforming the shape of the metal plate is performed again.

In the conventional press forming technology, after the first press forming, the metal plate is repeatedly pressed through the metal plate having the first metal plate inserted therein to perform the list-making process, or the metal plate is moved to the post- And the metal plate was again pressed through the post-processing die.

When the metal plate is repeatedly pressed through the first press forming die for the LIST-like process, there is a high probability that fatigue accumulates on the molds formed on the upper die and the lower die and thus the mold is broken.

In addition, when a plurality of post-process dies other than the first press-formed dies are provided for the list-like process, breakage of the first press-formed dies due to the mold surface fatigue is prevented, but the cost of producing the dies increases, I felt sorry.

Korean Registered Patent No. 10-1277939 (Jun. 17, 2013)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a press apparatus and a method of operating the same, .

In order to achieve the above object, a press apparatus according to an embodiment of the present invention is a press apparatus including a lower die on which a metal plate is placed and an upper die positioned above the lower die to press the metal plate, A protrusion formed in the groove is formed on the upper surface of the lower die and a roller is provided on one side of the lower die for moving along the surface of the protrusion and pressing the metal plate to improve the dimensional accuracy of the metal plate.

Further, a load measuring sensor is provided for measuring the load on the roller when the roller presses the metal plate, and a shape detecting sensor for detecting the shape of the metal plate is provided on one side of the lower die .

The rollers include rollers that move in parallel with the surface of the protrusions and that are in contact with the surface of the protrusions that are engaged with the rollers. The stoppers are formed at one side of the rollers in the longitudinal direction of the rollers, And the other side may be provided with a fixing clip symmetrical with the stopper.

According to an aspect of the present invention, there is provided a method of operating a press apparatus including a lower die on which a metal plate is placed and an upper die positioned on a lower die to press the metal plate, A first machining step in which the upper die presses the lower die and changes the shape of the metal plate material and a second machining step in which the roller provided on the lower die side moves along the surface of the lower die and corrects the shape of the metal plate do.

In addition, after the first machining step, the shape of the metal sheet material is detected by each part, the different parts from the design form of the metal sheet material are selected, the necessary load weight of the selected part is calculated considering the design shape of the metal sheet material, In the processing step, only the area where the roller is selected can be pressed with a required load or less.

Further, in the secondary processing step, the contact portion between the roller and the metal plate is calculated based on the information measured through the load measuring sensor provided on the roller, and when the contact portion is non-continuous, Diameter rolls.

According to the press apparatus and the operation method of the present invention as described above, it is possible to prevent the accumulation of fatigue of the mold used in the first press process, and to eliminate the need for providing a plurality of post-process molds for the list- And the movement of the metal plate is minimized.

1 is an outline view of a press apparatus according to an embodiment of the present invention,
Fig. 2 is an outline view of the press apparatus of Fig. 1,
3 is a flow chart of a method of operating a press apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings denote the same reference numerals whenever possible.

In the following description of the present invention, a detailed description of related arts will be omitted so as not to obscure the gist of the present invention.

1 and 2, the press apparatus D of the present invention includes a lower die B on which a metal plate P is placed and a lower die B on a lower die B to press the metal plate P, A groove H is formed on the lower surface of the upper die T and a projection S inserted into the groove H is formed on the upper surface of the lower die B, And a roller 100 that moves along the surface of the projection S on one side of the lower die B and presses the metal plate P to improve the dimensional accuracy of the metal plate P .

The roller 100 includes a shaft 110 moving in parallel with the surface of the projection S and a roll 120 contacting the surface of the projection S coupled to the shaft 110. The shaft 110 includes a horizontal-to-vertical mover 130 that moves the shaft 110 in a direction perpendicular or horizontal to the upper surface of the lower die B.

A stopper 111 for preventing the roll 120 from separating is formed on one side of the shaft 110 in the longitudinal direction and a fixing clip 112 is symmetrical to the stopper 111 on the other side in the longitudinal direction of the shaft 110 Respectively.

The roller 100 is provided with a load measuring sensor 200 for measuring a load applied to the metal plate P via the roller 100. In addition, a shape detecting sensor 300 for sensing the shape of the metal plate P is provided at one side of the lower die B.

A control unit 400 electrically connected to the load measuring sensor 200 and the shape detecting sensor 300 is provided on one side of the lower die B.

The load measurement sensor 200 includes a plurality of load cells mounted on the surface of the roll 120 at regular intervals in four chambers. More precisely, one load cell is placed at each intersection of the grid pattern arbitrarily formed on the surface of the roll 120.

The shape detecting sensor 300 includes an infrared camera, and the design form of the metal plate P is stored in the control unit 400.

In one embodiment of the present invention, the roller 100 is fabricated such that its length is less than the width of the lower die B. The roller 100 may be provided on one side of the lower die B depending on the shape of the protrusion S formed on the lower die B. [

One embodiment of the present invention configured as above operates in accordance with the flowchart shown in FIG.

3, the method of operation of the press apparatus D of the present invention is such that the lower die B on which the metal plate P is placed and the upper die B on the lower die B to press the metal plate P A method of operating a press device (D) comprising a top die (T), wherein the top die (T) presses the bottom die (B) and changes the shape of the metal sheet (P) And a secondary processing step S200 in which the roller 100 provided at one side of the lower die B moves along the surface of the lower die B and corrects the shape of the metal plate P. [

After the first machining step S100, the shape of the metal plate P is detected by the shape detecting sensor 300 provided at one side of the lower die B to generate a video signal, (400).

A selection step S110 is performed in which the design shape and video signal previously stored in the control unit 400 are collated with each other through the control unit 400 and a portion different from the design shape of the metal plate P is selected. Then, the control unit 400 carries out a load calculation step (S120) for calculating the required load on the selected portion in consideration of the design shape of the metal plate P

In the secondary processing step (S200), a screening site pressing step (S210) is performed in which only the selected area of the roller (100) is pressed with a force equal to or less than the required load. At this time, the load measuring sensor 200 provided on the roller 100 continuously measures the force pressing the selected portion of the roller 100, and transmits a measurement signal to the control unit 400.

The control unit 400 activates the horizontal-vertical movement device 130 based on the measurement signal received from the load measurement sensor 200 to increase or decrease the force that the roller 100 presses the selected portion.

In the secondary processing step S200, a contact portion for calculating a contact portion between the roller 100 and the metal plate P based on the information measured through the load measuring sensor 200 provided on the roller 100, The calculation step S220 is performed. If the contact area is discontinuous, a replacement step S230 is performed in which the roll 120 provided on the roller 100 is replaced with a roll 120 having a smaller diameter.

In one embodiment of the present invention, when a load cell arranged on an axis parallel to the central axis of the roll 120 is referred to as a load cell group, a measurement signal is transmitted to the control unit 400 through a load cell group different from the one load cell group. It is assumed that the contact portion between the roll 120 and the metal plate P is discontinuous.

According to the press apparatus (D) and the operating method of the present invention as described above, after the first press forming, the metal plate material P is pressed by the roller 100 and the listike process is performed.

Accordingly, since it is not necessary to process the metal plate material P a plurality of times by using the die subjected to the first press processing for the list-like process, fatigue accumulation of the first press-formed die is prevented.

Further, since a plurality of post-process dies do not need to be provided in the press-processing line for the list-like process, the cost of the press processing is minimized and the movement of the metal plate P is minimized.

The shape of the first metal plate P is determined through the control unit 400 and the shape sensor 300 provided at one side of the load measuring sensor 200 and the lower die B provided on the roller 100, The shape can be corrected so as to conform to the design shape without the intervention of the operator. As a result, the press working operation becomes simpler than in the past.

As described above, the pressing apparatus D according to the present invention and the operation method thereof have been described with reference to the drawings. However, the present invention is not limited to the embodiments and drawings disclosed in the present specification, Various modifications may be made by those skilled in the art within the scope of the claims.

100: roller
110: Axis
111: Stopper
112: Fixing clip
120: roll
130: horizontal-vertical movement device
200: Load measuring sensor
300: shape detection sensor
400: Control unit
D: Press device
P: metal plate
B: Lower die
S: projection
T: upper die
H: Home
S100: primary processing step
S110: Selection step
S120: Gain calculation step
S200: Secondary processing step
S210: Selective site pressing step
S220: Contact area calculation step
S230: Replacement step

Claims (6)

A press apparatus comprising a lower die on which a metal plate is placed and an upper die located above the lower die to press the metal plate,
A groove is formed on the lower surface of the upper die,
A protrusion inserted into the groove is formed on the upper surface of the lower die,
A roller that moves along the surface of the projection on one side of the lower die and presses the metal plate to improve the dimensional accuracy of the metal plate;
A shaft 120 moving in parallel with the surface of the protrusion S and a roll 120 contacting the surface of the protrusion S coupled to the shaft 110, And a horizontal-vertical moving device (130) for moving the shaft (110) in a direction perpendicular or horizontal to the upper surface of the lower die (B)
The length of the roller is shorter than the width of the lower die,
A load sensor for measuring a load applied to the metal plate through the roller is provided on the roller,
And a shape sensing sensor for sensing the shape of the metal plate is provided on the lower die.
delete The method according to claim 1,
The roller
An axis moving in parallel with the surface of the projection;
And a roll coupled to the shaft and in contact with the projection surface,
A stopper is formed on one side of the longitudinal direction of the shaft to prevent the roll from coming off,
And a fixing clip is provided on the other side of the shaft in the longitudinal direction and symmetrical with the stopper.
A method of operating a press apparatus comprising a lower die on which a metal plate is placed and an upper die located above the lower die to press the metal plate,
A primary machining step in which the upper die presses the lower die and changes the shape of the metal plate;
And a second machining step in which the roller provided on the lower die side moves along the surface of the lower die and corrects the shape of the metal plate material;
After the primary processing step,
Detecting a shape of the metal plate by each part, selecting a part different from a design shape of the metal plate,
Calculating a necessary load weight of the selected portion in consideration of a design shape of the metal plate,
In the secondary processing step,
Wherein the roller presses only the selected area with a force less than the required load.
delete 5. The method of claim 4,
In the secondary processing step,
Calculating a contact portion between the roller and the metal plate based on information measured through a load measuring sensor provided on the roller,
Wherein when the contact portion is non-continuous, the roll provided in the roller is replaced with a roll having a smaller diameter.
KR1020160025503A 2016-03-03 2016-03-03 Press apparatus and methods that operate KR101784496B1 (en)

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Application Number Priority Date Filing Date Title
KR1020160025503A KR101784496B1 (en) 2016-03-03 2016-03-03 Press apparatus and methods that operate

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Application Number Priority Date Filing Date Title
KR1020160025503A KR101784496B1 (en) 2016-03-03 2016-03-03 Press apparatus and methods that operate

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KR101784496B1 true KR101784496B1 (en) 2017-10-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000126826A (en) 1998-08-21 2000-05-09 Matsushita Electric Works Ltd Spinning method
JP2007289989A (en) 2006-04-24 2007-11-08 Jatco Ltd Method and device for manufacturing article having bent part increased in wall thickness

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000126826A (en) 1998-08-21 2000-05-09 Matsushita Electric Works Ltd Spinning method
JP2007289989A (en) 2006-04-24 2007-11-08 Jatco Ltd Method and device for manufacturing article having bent part increased in wall thickness

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