JP3405077B2 - Press apparatus, press-formed member, and forming method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press device, a press-molded member using the press device, and a method of forming the same.

[0002]

2. Description of the Related Art In the case of forming a press-formed member using a master model, first, drawing data relating to the shape of the member to be manufactured is converted (programmed) into data for NC processing, and the NC data is used for the NC machine tool. Is operated to cut the resin material and the like for mold making to manufacture a master model. In this master model, for example, if the molded part is a door panel of the vehicle body, it is necessary to mold and manufacture the resin material with the same inclination as the state of the device to the vehicle. The operator uses the layout machine to find the position (mark) by reading the position of the trim line, which is the processing instruction section, and the mounting hole.

When the positioning of the machining instructing section is completed, a machine tool for model machining then performs a reading operation of data called "teaching" from the master model, and the master model is transferred to an inverted plaster and transferred to the press type. An upper die called a punch die or a die die, which is an original shape, is formed, and this press die is used to form a draw panel. Since the transfer from the master model to the punch mold is transferred from the actual vehicle mounting state, that is, the form deviated from the reference coordinates (car line) of the vehicle body, due to the problem of die cutting and moldability,
The position of the molded draw panel is adjusted using an adjusting jig so that the draw panel is inclined when mounted on the vehicle, and laser processing is performed based on the teaching data read from the master model to finish the shape into a desired shape.

Next, in the case of forming a press-formed member without using the master model, the drawing data of the member to be produced is converted into data for NC processing, and the NC machine tool is operated by using this data to perform the press. The punch die, which is the basis of the main shape of the die, is directly carved and a blank holder (wrinkle suppression)
The upper die, which is called a die die, is individually manufactured with an NC processing machine to finish the die. In this case, since the desired shape is directly formed on the press die, the press die with less error in transfer to the panel can be obtained than in the case of using the master model.

Then, a draw panel is formed by using this press die, the positions of processing instructions such as trim lines and mounting holes are drawn on the drawing panel by scribing work, and the drawn processing instructions are drawn by a laser processing machine. Teaching is performed and laser cutting is performed along the processing instruction portion to complete the molded member. If the molding is a vehicle door panel, the press die
Due to the relationship of die cutting and the problem of sheet metal distortion during molding, it is molded in a shape that is deviated from the actual vehicle mounting (car line), so the molded draw panel is used to adjust the inclination when mounting on the vehicle using the adjustment jig. After adjusting so that the trimming line and the hole position etc. are marked, the marking work is performed. Further, Japanese Utility Model Laid-Open No. 2-114122 describes a press die in which a blank holder is provided with a recess for suppressing wrinkles.

[0006]

When a master model is used to manufacture a press die or a molded member, the model is
Since it is pre-processed in the mounting condition (car line) of the molding member, the master model can be easily injured without making corrections to the dimensions of the machining instruction part drawn in the drawing. The accuracy is good. On the other hand, since a press die is manufactured by directly reversing the plaster from the master model, a transfer error is reflected, and even if the dimensional accuracy of the processing instruction portion is good, an error occurs in the press-molded member during press working.

When a master model is not used to manufacture a press die or a molded member, a desired shape is directly cut on the press die, so that a press die with less transfer error and higher accuracy than the case of using a master model is used. In addition, the accuracy of the press-formed draw panel is improved.
However, this press die is shaped at an angle (inclination) that is different from when the molded part is actually mounted on the vehicle body due to the relationship of die cutting and the problem of formability. It is necessary to perform marking work such as mounting positions and mounting holes on the layout machine by correcting the drawing dimensions in consideration of the inclination, and it is a huge work to convert drawing data to NC data, resulting in many man-hours. As well as
The scribing error of the processing instruction part such as the trim line and the mounting hole position becomes large.

It is conceivable to directly insert the processing instruction portion into the press die, but the marking operation requires precision, and the press die becomes large and very heavy depending on the size of the forming member. It is difficult to tilt or move it easily. Even if it is tilted, it is difficult to stabilize its state due to the weight, and the dimensional accuracy of the scribe is likely to change. Even if the press die is tilted stably by some means, the number of work steps such as installation of a gantry for stabilization increases.

In the case of mass-producing molded members, a dedicated mold having processing instruction portions such as trim lines and mounting hole positions,
For example, a trim die and a pierce die are individually provided, and after the draw panel is once formed by the press die, a process such as press cutting with a dedicated die can be performed, so that the marking operation can be omitted.
However, if a dedicated mold is manufactured separately from the press mold when manufacturing a prototype, there are problems that the number of prototypes is small and the mold manufacturing cost is high and the trial time is long.

In Japanese Utility Model Laid-Open No. 2-114122, a blank holder provided with a recess is described, but this is not for positioning the machining instructing portion for press cutting. This is for suppressing wrinkles, and is different from the technique of engraving the processing instruction portion on the molding member.

The object of the present invention is applied to the case where a press-molded product is manufactured so that it can be used as a master without using a master model. It is an object of the present invention to provide a press device, a press-molded member, and a molding method thereof that can reduce the preparation cost and shorten the manufacturing time.

[0012]

Therefore, the invention according to claim 1 provides a first mold and a second mold which are provided so as to face each other, and press-molding surfaces are formed on the respective facing surfaces. Have,
A press device for sandwiching and pressing a steel plate between the first die and the second die, wherein the first die is a machining instructing section for instructing a press-molded member after pressing the machining position of the next step. And a flat portion is provided at a portion of the second mold which is arranged so as to face the first mold and faces the above-mentioned transfer portion.
In addition , an elastically deformable pressing member selectively disposed between the transfer portion and the flat portion is provided.
And the pressing member is disposed between the flat portion and
First, it is characterized by pressing at a lower press pressure than the normal press pressure .

[0013]

As a method of forming a press-formed member,
According to a second aspect of the present invention, a first mold provided with a concave transfer part for transferring the processing instruction part and a second mold provided with a flat part facing the transfer part are provided. Using a press machine for forming a steel plate into a press-formed member, an elastically deformable pressing member is interposed between the steel plate facing the transfer part and the mold provided with the flat part ,
And a trimming step in which the steel sheet and the pressing member are pressed with a low press pressure to form a press-formed member on which the processing instruction portion is transferred, and a laser is cut on the processing instruction portion transferred to the press-formed member. Have and.

According to a third aspect of the present invention, there is provided a method for forming a press-formed member, which comprises a first die having a concave transfer portion for transferring the processing instruction portion and a flat portion facing the transfer portion. A second die, which uses a press device for forming a steel sheet into a press-formed member by both of the above-mentioned dies, and between a first steel sheet provided to face the transfer portion and a second die provided with the flat portion. A first pressing step of interposing an elastically deformable pressing member, pressing the first steel plate and the pressing member to form a first press-molded member to which the processing instruction portion is transferred , Teaching step of taking in the processing instruction data of the processing instruction section transferred to the first press-molded member, a first trim step of laser cutting the processing instruction section, the first die and the first step using the pressing device. Type 1 above between Type 2 A second press step of interposing a second steel sheet different from the first steel sheet used in the first step, and pressing the steel sheet to form a second press-formed member to which the processing instruction portion is not transferred; A second trim step of laser cutting the second press-formed member formed in the second press step based on the processing instruction data taken in in the teaching step.

[0016] In the present invention of claim 4, further comprising a second type of flat part facing the first mold and the transfer section transfer portion concave transferring the processed instruction portion is provided is provided, said both A press device for forming a steel sheet into a press-formed member by a die is used, and an elastically deformable pressing member is interposed between a first steel sheet provided facing the transfer portion and a second die provided with the flat portion. A first pressing step of mounting the first steel plate and the pressing member to form a first press-molded member to which the processing instruction portion is transferred, and a first press-molded member transferred to the first press-formed member. A teaching process for fetching machining instruction data of the machining instruction section, and a first steel plate different from the first steel plate used in the first pressing process between the first die and the second die using the pressing device are provided. 2 steel sheet is inserted, and this steel sheet is pressed to instruct Of the second press-molded member that is not transferred to the second press-molded member, and the second press-molded member molded in the second press-process is laser-cut based on the processing instruction data acquired in the teaching process. And a trim step.

The invention according to claim 5 is the invention according to claim 3 or 4.
In the method of forming a press-formed member, the press step or the first press step of forming the press-formed member to which the processing instruction portion is transferred, is a mold provided with a steel plate facing the transfer portion and the flat portion. A pressing member that is elastically deformable is interposed between and, and press working is performed at a pressing pressure lower than the normal pressing pressure.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The press device according to the present invention is provided with a concave portion in the transfer portion in order to form a processing instruction portion which becomes a marking in the subsequent trim step or piercing step on the press-formed member after pressing. A punch die as a die, an upper die as a second die which is arranged so as to face the punch die and has a flat portion at a portion facing the transfer portion, and is selectively placed between the transfer portion and the flat portion. An elastically deformable pressing member is provided.

In the press-formed member according to the present invention, when a steel sheet is pressed by a press machine, a working instruction portion for instructing a working position of the next process is transferred and formed. For example, when a steel plate for pressing is interposed between a punch die and an upper die forming a press machine, and a pressing member is placed on a steel sheet facing a concave transfer portion provided in the punch die, and press working is performed, The pressing pressure of the elastic member portion becomes higher than that of the other portion, and the steel plate is plastically deformed along the concave transfer portion to form the working instruction portion. Here, unless the pressing member is placed on the steel plate facing the transfer portion, the press pressure in the vicinity of the transfer portion does not become higher than other portions, so that the press forming member does not have the processing instruction portion.

As a method of forming a press-formed member,
A press that includes a first die provided with a concave transfer portion for transferring the processing instruction portion and a second die provided with a flat portion facing the transfer portion, and presses a steel sheet into a press-formed member by the both die. Using the device, a steel plate is placed between the first and second molds during pressing, and an elastically deformable pressing member is interposed between the steel plate facing the transfer part and the mold provided with the flat part. Perform a pressing step to mold the press-molded member with the processing instruction portion transferred by clamping the pressing member with the first and second molds, and then laser-cut the press-formed member with the processing instruction portion transferred. A trim process is performed to form a desired shape.

Further, as another method of forming the press-formed member, a first mold provided with a concave transfer portion for transferring the processing instruction portion and a second mold provided with a flat portion facing the transfer portion. Using a press device for forming a steel sheet into a press-formed member by using both of the above-mentioned dies, a steel sheet is provided between the first and second dies at the time of pressing, and a die having a steel sheet and a flat portion facing the transfer portion is provided. An elastically deformable pressing member is interposed between
The first pressing step of forming the first press-formed member on which the processing instruction portion is transferred by clamping the steel plate and the pressing member with the first and second molds is performed, and then transferred to the first press-formed member. Further, the teaching step of taking in the processing instruction data of the processing instruction section and the first trim step of laser cutting the processing instruction section are performed. Next, a second steel plate different from the first steel plate used in the first pressing step is interposed between the first mold and the second mold by using a pressing device, and the steel plate is pressed. After performing the second press step of forming the second press-formed member in which the processing instruction portion is not transferred, the second press formed in the second pressing step is performed based on the processing instruction data taken in in the teaching step. A second trim step of laser cutting the formed member is performed to process the second press-formed member into a completed desired shape.

As another method of forming the press-formed member, a first mold provided with a concave transfer portion for transferring the processing instruction portion and a second mold provided with a flat portion facing the transfer portion are used. Equipped with a press device for forming a steel plate into a press-formed member by the above-mentioned two molds, at the time of pressing, the steel plate is arranged between the first and second molds, and the steel plate facing the transfer part and the mold having the flat part are provided. A first pressing step of forming a first press-molded member on which a processing instruction portion is transferred by interposing an elastically deformable pressing member between the first and second plates of the steel plate and the pressing member. Then, the processing instruction data of the processing instruction portion transferred to the first press-formed member in the teaching process is fetched. After that, the first trimming step of cutting the first press-formed member is omitted, and the first steel plate used in the first pressing step is separated between the first die and the second die by using the pressing device. A second press step of interposing a second steel plate and pressing the steel plate to form a second press-formed member in which the processing instruction portion is not transferred; A trim step of laser cutting the second press-formed member formed in the second press step is performed to process the second press-formed member into a completed desired shape.

Further, in the pressing step or the first pressing step in the method of forming both of these press-formed members, an elastically deformable pressing member is interposed between the steel plate facing the transfer part and the mold provided with the flat part. When the steel plate and the pressing member are mounted, and the first and second molds are clamped and pressed, particularly, the press working is performed at a pressing pressure lower than the normal pressing pressure. Then,
The pressure at the portion where the elastic member is interposed becomes higher than that at other portions, the steel plate is deformed toward the concave transfer portion, and the processing instruction portion is transferred to the steel plate. That is, by selectively interposing the pressing member in the press die and adjusting the press pressure, the post-press processing instruction portion is selectively transfer-molded to the press-molding member.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings. The press die in this embodiment is for molding a door panel of a vehicle, and is described here as a prototype die in particular.

As shown in FIGS. 1 and 2, the punch die 1, which is the first die of the press die, has the shape of a draw panel 13A as a press-forming member, which will be described later.
It is molded by the well-known NC processing machine 2 shown in FIG. The punch die 1 has a plurality of trim beats 3, 4, and 5 serving as a transfer portion for forming a processing instruction portion on the draw panel 13A.
Are formed by NC processing. In this example, the trim beats 3, 4, and 5 are formed by cutting with a ball end mill and provided in a concave shape. The trim beats 3 and 4 are for transferring the plate stop positions (trim lines) on the outside and inside of the draw panel 13A to the panel, and the trim beat 5 is for transferring various mounting hole positions of the panel. is there. The cross sections of the trim beats 3, 4, and 5 may be V-groove-shaped or any other shape as long as they are engraved in the punch die 1 and the processing instruction portion can be marked on the draw panel.

Above the punch die 1 is shown in FIGS.
As shown in FIG. 3, the die dies 6 which are the second dies are arranged so as to face each other. A steel plate 13, which is a member of the draw panel 13A, is interposed between the die mold 6 and the punch mold 1. The inner surfaces of the die die 6 facing the trim beats 3, 4, 5 formed on the punch die 1 are flat portions 6a, 6b, 6c, respectively.
It is said that. In the vicinity of the punch die 1, a well-known blank holder 9 which is operated so as to be vertically movable by a plurality of cushion pins 7 and 8 and which suppresses wrinkles of a steel plate 13 at the time of pressing and a steel plate 13 'described later is circumferentially arranged. . The blank holder 9 is processed and manufactured into a desired shape by the NC processing machine 2 described above.

A constant clearance is provided between the punch die 1 and the blank holder 9. Further, between the punch die 1 and the blank holder 9, as shown in FIG. 3B, a plurality of punch die 1 fixed to the punch die 1 so that the punch die 1 and the blank holder 9 can be operated mutually. A pin 10 is arranged, and the blank holder 9 is vertically movable with a certain clearance using the pin 10 as a sliding guide member. Upper surface 9A of blank holder 9
And the peripheral portion 6A of the die die 6, the steel plates 13, 1 at the time of pressing
Concavo-convex portions 11 and 12 for restricting the movement of 3'are provided respectively.

Since the press die of this embodiment is for trial production,
Low melting zinc alloy etc. are used for the material. This material has a merit that it is inexpensive and can be melted and reused as another mold.

Next, a method of forming the draw panel 13A of the present invention will be described. First, in the mold forming process and the transfer part forming process shown in FIG. 3A, the drawing data is transferred to the NC machine tool 2 having a well-known microcomputer.
Converted to C processing data, the base material made of low melting zinc alloy is cut based on the data, and the punch die 1, die die 6 and blank holder 9 are directly carved, and the trim beats 3, 4, 5 are also drawn. Directly engrave based on the data.

In the pressing step shown in FIG. 3 (b), the cushion pins 7 and 8 shown in FIG. 4 are operated to lower the blank holder 9, and the die 6 is lowered by an elevating means (not shown). Then, as shown in FIG. 5, the steel plate 13 is subjected to the above-mentioned press working with a normal press pressure to form the raw shape of the press-formed member 13A. After that, the press die is once opened as shown in FIG. Since the portions of the die die 6 facing the trim beats 3, 4, 5 are flat portions 6a, 6b, 6c, the processing instruction portion is not transfer-molded on the draw panel 13A formed in this pressing step.

Next, as shown in FIG. 7, the flat portions 6a, 6a
parts 13a of the draw panel 13A facing the b and 6c,
Rubber plates 14, 15 and 16 having a thickness of about 3 mm, which are elastically deformable pressing members, are placed on 13b and 13c, and the press die is closed again as shown in FIG. Then, a larger pressing pressure is applied to the portions 13a, 13b, 13c of the draw panel portion 13A facing the trim beats 3, 4, 5 than the portions of the draw panel 13A on which the rubber plates 14, 15, 16 are not placed. Take the rubber plate 1
Parts 13a, 13b, 13c on which 4, 15, 16 are placed
Is plastically deformed along the trim beats 3, 4, and 5, as shown in FIG. Then, when the press die is opened again as shown in FIG. 9, the trim beats 3, 4, and 5 trim the trim lines 17 and 18 and the mounting hole position 19 which are the stop positions of the processing instruction portion to the draw panel 13A. That is, the trim lines 17 and 18 and the mounting hole position 19 which are the references to be processed for the next process after pressing are transferred and molded directly to the draw panel 13A by pressing.

When the rubber plates 14, 15 and 16 are interposed in the press mold, the rubber plates 14, 1 must be pressed at a pressure lower than the normal pressing pressure.
Since the load of the press dies interposing 5 and 16 is too great and the dies may be damaged, the adjustment of the press pressure is important in the step of transferring the transfer portion.

Further, as the pressing member, the rubber plates 14, 15,
Although 16 is illustrated, the pressing member is not limited to this rubber plate. For example, it is of course possible to use a plate-shaped member made of urethane, silicon, thick vinyl, or the like.

When the pressing process is completed, the teaching process shown in FIG. 3C is performed. In this step, first of all, the draw panels 13A having the trim lines 17, 18 and the mounting hole positions 19 described with reference to FIG. 9 are set to a tilt when the vehicle is mounted by a plurality of adjusting jigs 21, and the trim lines 17, 18 and Laser teaching is performed on the contour of the mounting hole position 19 by a well-known laser processing machine 20. With the laser processing machine 20,
The processing instruction data obtained by the teaching process is once converted internally as trim data, and then processed as shown in FIG.
The trimming process is performed by the laser processing machine 20 shown in FIG.

In the trimming process, as shown in FIG. 11, while the laser processing machine 20 is moved with respect to the draw panel 13A based on the trim data, the laser beam 22 having a predetermined output is applied to the end portions of the processing instructing portions 17, 18, and 19. Illuminate along (only the trim line 17 is shown in this figure) and draw panel 1
3A is cut into a predetermined shape, and as shown in FIG.
The completed door panel 130 is used.

According to the invention, the trim beats 3, 4, 5
By performing the press working using the press die in which the trim panel 17 is formed, the trim line 17,
Since the positioning of the mounting holes 18 and the mounting holes 19 can be performed, a press product can be molded without performing marking work or manufacturing a dedicated mold for molding a master model or a trim line. Since the trim beats 3, 4, and 5 are molded by the NC machine tool, the precision error of the NC machine tool 2 can be manufactured in units of 1/100 mm, and the trimming is much more remarkable than when the operator manually positions using the marking machine. The accuracy of the lines 17 and 18 and the mounting hole position 19 is improved.

Therefore, in the molding process of the door panel 130 which is a completed press forming member, a dedicated mold or a master model for molding only the conventional transfer portion is not manufactured, so that the mold preparation cost and the manufacturing time can be shortened. In particular, in order to mold a prototype or the like, it is possible to reduce the mold preparation cost and the manufacturing time, and it is possible to develop efficiently.

Further, by transferring the trim beats 3, 4, 5 to the draw panel 13A, the trim lines 17, 1
8 and the positions of the mounting holes 19 can be clearly known, so that it is possible to rationalize the work by eliminating the need for the marking operation and the conversion of the drawing data by the conventional layout machine.

By the way, the trim lines 17 and 18 and the mounting hole position 19 which are the processing instruction portions formed on the draw panel 13A are processed by the laser processing machine 2 by the teaching process.
Since it is recorded as data in 0, when laser cutting the draw panels of the same shape, trim lines 17, 1
8 and the mounting hole position 19 may not be formed in each draw panel.

That is, when a plurality of door panels 130, which are the same pressed product, are molded, the rubber plate 1 is pressed at the time of pressing.
4, 15 and 16 are interposed between the first steel plate 13 and the mold to form only one draw panel 13A serving as a first press-formed member in which the shapes of the trim beats 3, 4, and 5 are transferred. One pressing step is performed, and before and after that, as shown in FIG.
The second steel plate 13 'different from the first steel plate 13 is used as the rubber plate 1
A second press step is performed in which the press work is performed without interposing 4, 15, and 16, and the trim beat 3, as shown in FIG.
The draw panel 13′A which is the second press-molded member 4 and 5 which is not transferred is molded.

Next, the draw panel 13A in which the shapes of the trim beats 3, 4, and 5 are transferred, that is, the draw panel 13A in which the trim lines 17 and 18 as the master and the mounting hole position 19 are formed is processed by the laser beam machine 20. Teaching. Then, the trim line 1 as the member to be processed
A plurality of adjustment jigs 21 shown in FIG.
As shown in FIG. 14, based on the trim data in the laser processing machine 20 as the second trim step, the laser beam 22 is irradiated to irradiate the panel 13′A on the panel 13′A.
The part corresponding to the trim line in is trimmed.
By repeating this adjusting operation and the trimming process, the draw panel 13'A is laser-cut into a desired shape, and the same door panel 130 is sequentially molded. Therefore, it is not necessary to teach each draw panel, the processing efficiency is improved, the working time can be shortened, and the development can be performed more efficiently.

Also, the trimmed door panel 130
Is covered on the draw panel 13A which is the master on which the trim lines 17 and 18 and the mounting hole position 19 are formed,
The position of the laser-cut trim lines 17 and 18 and the mounting hole position 19 can be confirmed. That is, by covering the draw panel 13A with the processed door panel 130,
The draw panel 13A functions as an inspection jig to inspect the door panel 130.

Here, the teaching process is performed after the second pressing process, and then the processing for the draw panel 13'A, that is, the second trim process is performed. However, the first pressing process, the teaching process, and the second pressing process are performed. Draw panel 1 as a second press-molded member after performing steps
It may be a processing procedure for performing a trim step of laser cutting 3′A. Furthermore, the draw panel 1 which becomes the first pressing member after the first pressing step and the teaching step.
It goes without saying that a processing procedure in which the first trim step of laser-cutting 3A is performed, the draw panel 13′A is then molded in the second press step, and the second trim step is finally performed may be performed.

[0044]

According to the present invention, since the transfer portion for transferring the processing instruction portion is formed on the press die, the processing instruction portion after pressing which has conventionally been positioned in the press-formed product by the marking operation is press-formed. It can be transferred to the product, the marking work can be eliminated, and the work efficiency is improved. Further, since the processing instruction portion is transferred to the press-molded product by the press working, a dedicated mold or the like for that is not required, the manufacturing time can be reduced at low cost, and the variation of the processing instruction portion for each panel can be reduced.

[0045]

According to the present invention, the transfer part for transferring the processing instruction portion to the press molding member is provided in the press die, and further, the trim line or the punching position from the master press molding member to the processing instruction portion is formed. Since the processing instruction data can be imported and processed, there is no need for a master model or dedicated mold, and the processing instruction section can be positioned on the press-formed member with much higher accuracy than in the conventional marking operation, as well as the press process and trim. The process can be continuously performed, and there is little variation in the processing instruction portion between the members, and the molding process of the press-molded member can be performed while suppressing the manufacturing time and cost.

Particularly, in the invention according to claims 3 and 4 , the first press molding in which the processing instruction portion is transferred to the first press-molded member in the first pressing step and the processing instruction portion is transferred in the teaching step. Processing instruction data is fetched from the member, processed, and the second press-formed member having no processing instruction portion formed in the second pressing step is laser-cut based on the processing instruction data to be processed into a desired shape. Therefore, it is not necessary to transfer the processing instruction portion to the second press-molded member, and the trimming process can be continuously performed, so that the processing efficiency is improved and the working time can be shortened.

[0048] In yet a fourth aspect of the present invention, since the cut only the second press-forming member without modifying instruction portion which is molded in a second pressing step, the second press-forming member, the first trim step By superimposing it on the first press-molded member on which the processing instruction portion has not been formed, the processing state of the press-molded member after the trimming can be inspected.

According to the present invention, an elastically deformable pressing member is interposed between the steel plate facing the transfer part and the other mold provided opposite to the mold on which the transfer part is formed. by pressing at a lower press pressure than pressure, in addition to the effect of the above claims, Kouki placing of the invention, the load on the press type is improved mold durability is reduced.

[Brief description of drawings]

FIG. 1 is a partially enlarged perspective view of a punch die which is one configuration of a press device showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a punch-type structure.

FIG. 3 is a diagram showing a forming process of a press-formed member showing an embodiment of the present invention.

FIG. 4 is a cross-sectional view showing an opened state of the press device.

FIG. 5 is a cross-sectional view showing a pressed state of a steel plate.

FIG. 6 is a cross-sectional view showing a molding state of a second press-molded member having no processing instruction portion and a state where the press die is opened.

FIG. 7 is a cross-sectional view showing an open state of a press device with a pressing member interposed.

FIG. 8 is a cross-sectional view showing a pressed state in the first pressing step.

FIG. 9 is a cross-sectional view showing an opened state of the first press-molded member and the press device on which the processing instruction portion has been molded.

FIG. 10 is an enlarged view showing the action of the pressing member when forming the processing instruction portion.

FIG. 11 is an enlarged view showing a laser irradiation state on a processing instruction portion formed on the first steel sheet which is a first trim step.

FIG. 12 is a cross-sectional view showing an open state of the pressing device in the second pressing step.

FIG. 13 is a cross-sectional view showing a pressed state in the second pressing step.

FIG. 14 is an enlarged view showing a laser irradiation state on a second steel plate which is a second trim step and a trim step.

[Explanation of symbols]

1 1st type (punch type) 2 NC machine tools 3, 4, 5 Transfer part (trim beat) 6 2nd type (die type) 6a, 6b, 6c Flat part 13 Steel plate (first steel plate) 13 'Steel plate ( Second steel plate) 13A Press-formed member (first press-formed member) 13'A Press-formed member (second press-formed member) 14, 15, 16 Pressing member 17, 18, 19 Processing instruction section 130 Completed press Molded member (door panel)

Claims (5)

(57) [Claims] Claims: 1. Opposed to each other, facing each other
Has a first mold and a second mold with a press-molded surface on the surface
And, a pressing device for pressing and clamping the steel plate between the first mold and the second mold, the first mold, and instructs the processing position of the next step for press molding member after pressing A second transfer section is provided , which is provided with a recessed transfer section that forms an instruction section, and is arranged so as to face the first mold and faces the transfer section .
Rutotomoni provided a flat portion at the site of the mold, comprising a elastically deformable pressing member for selectively disposed between the transfer portion and the flat portion, the pressing between the transfer portion and the flat portion The member is placed
Pressure is lower than the normal pressing pressure,
Pressing device characterized by less 2. A concave transfer section for transferring the processing instruction section is provided.
And a flat part facing the transfer part is provided.
And a second mold, which press-forms a steel plate with both molds.
Using a press machine for forming into a material, a steel plate facing the transfer part and the flat part
An elastically deformable pressing member is interposed between the two molds,
The steel plate and the pressing member with a press pressure lower than the pressure
Press-formed member to which the above-mentioned processing instruction portion has been transferred by pressing
A pressing step of forming a processing instruction unit that is transferred to the press forming member Rezaka
Forming process of a press-formed member having a trimming step
Construction method . 3. A steel plate is press-formed by both of the above-mentioned molds, which comprises a first mold provided with a concave transfer part for transferring a processing instruction part and a second mold provided with a flat part facing the transfer part. Using a press device for forming a member, an elastically deformable pressing member is interposed between a first steel plate provided facing the transfer portion and a second die provided with the flat portion, The steel plate and the pressing member of No. 1 are pressed to form the first press-formed member to which the above-mentioned processing instruction portion is transferred.
First press step and the processing instruction section transferred to the first press-molded member
Between the teaching step of capturing processing instruction data, a first trim step of laser cutting the machining instruction unit, and the first mold and the second mold with the press apparatus
In addition to the first steel plate used in the first pressing step,
The steel plate of No. 2 is inserted, and the steel plate is pressed to rotate the processing instruction section.
A second press for forming a second press-formed member that is not copied
Process and the processing instruction data captured in the teaching process
Based on the above, the second press formed in the second press step
Having a second trim step of laser cutting the molded member,
A method of forming and processing a press-formed member to be completed . 4. A steel plate is press-molded by both of the above-mentioned molds, which comprises a first mold provided with a concave transfer part for transferring a processing instruction part and a second mold provided with a flat part facing the transfer part. Using a press device for forming a member, an elastically deformable pressing member is interposed between a first steel plate provided facing the transfer portion and a second die provided with the flat portion, Pressing step of forming the first press-molded member to which the above-mentioned machining instruction portion is transferred by pressing the steel plate and the pressing member, and machining instruction of the above-mentioned machining instruction portion transferred to the above-mentioned first press-formed member A second steel plate different from the first steel plate used in the first pressing process is interposed between the first mold and the second mold by using the teaching process of capturing data and the pressing device. , A second pre-pressed sheet that does not transfer the processing instruction part Yes a second pressing step of molding the molding member, based on the processing instruction data taken by the teaching step, a second press-forming member molded by the second pressing step and the laser cut to belt rim step And a method of forming and processing a press-formed member to be completed. 5. In the first pressing step, a pair with the transfer portion is formed.
Between the facing steel plate and the second mold provided with the flat part.
With a pressure-deformable pressing member,
The press working is performed with a low press pressure.
3. The method for forming a press-formed member according to 3 or 4 .