JPS6054300A - Progressive press working method - Google Patents

Abstract

PURPOSE:To prevent decrease in yield, deformation of a worked part, etc. by embossing a plate-shaped work prior to slitting or notching and working flat the embossed part after the slitting or notching. CONSTITUTION:A work is embossed by an embossing punch 61 and a die 57 after working of a pilot hole A and a slitting and joining hole B. The work is thereafter notched by an upper blade 45 and a lower blade 47 and the embossed part N is crushed by a flat die 65 and a die 67. The work is further worked with a slit E by a slitting punch 39 and a die 43. The decrease in the yield of the work is prevented by such mechanism. Generation of burr scrup and indentation of the product are prevented by elongating the work.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a progressive press processing method in which a single press mold is equipped with a large number of punches and dies, and a large number of presses can be processed in one press process. It is something that

A conventional progressive press working method of this type will be explained based on FIGS. 1 to 7.

FIG. 1 shows a progressive press mold, in which a plate-shaped workpiece W is fed over a lower mold 1 from left to right by a workpiece feeding device (not shown). Then, each process is performed m-5 on this progressive press die as follows from left to right in Figure 1.
A punch, button die, etc. are provided.

(1) Pilot hole machining A pilot hole punch 3 is attached to a small punch hole hanging from an ascendable upper holder 5, and a hole button die 9 is attached to a pilot hole below the pilot hole punch 3. , is attached to the tie boulder 13 arranged on the exit ladder 11.

(2) Location 1 ~ A pilot bin 15 is vertically installed on the upper holder 5 on the work feed h side of the pilot hole punch 3, and a tie boulder 17 is provided on the lower rudder 11 below the pilot bin 15. An escape hole 19 for the pilot bin 15 is drilled at 1° (3). Further to the workpiece feeding direction side of the slit hole machining pilot bin 15, a Thrillad joining hole punch 21 is vertically installed on the upper holder 5. The punch holder 23 is attached to the punch holder 23.

A button die 25 for slit bonding holes is installed in the die holder 17 below the bonder 21 for slit bonding holes.
It is being

(4) Slitting Further, the punch 29 for slit processing is attached to the punch holder 27 vertically installed on the upper boulder 5 on the workpiece feed direction side of the punch 21 for slit joining hole. In the die holder 17 below the processing punch 29,
A button die 37 for slit processing is arranged in stages.

(5) Flange Processing A pad 33 as a bending die 32 is vertically provided on the upper boulder 5 on the workpiece feed direction side of the slit punch 29, and a bonding die as a bending die 32 is installed on the lower holder 11. 35 are arranged. a3, the flange die is attached to the upper holder 5 (t kj is omitted in C), but it works together with the punch 35 to bend both sides of the wire W downward.

(6) Separation Process Furthermore, a punch 39 for cutting and slitting is attached to a punch holder 37 that is vertically installed on the upper holder 5 on the workpiece feed direction side of the bending die 32. A die 43 for cutting and slitting is attached to a die holder 41 disposed on the lower holder 11 below this punch 39 for cutting and slitting.

The operation of the progressive press processing method using the conventional BR&R press type as described above will be explained. Fig. 2 shows a press-L product using this press die, and Fig. 3 shows a finished product.

A workpiece W is sent to a progressive press mold from the left side of FIG. 1 by a workpiece feeding device (not shown).

Then, the workpiece W enters between the pilot hole bonder 3 and the pilot hole button die 9, and when the workpiece W is sent to a predetermined position, the soil holder 5 is lowered and the pylon l-7L A in FIG. 2 is machined. be done.

After the holes 1 to A are machined, the upper holder 5 is placed on top, and the workpiece W is placed between the punch 21 for the slit joining hole and the slit 1 to
The slit joining hole B is formed by entering between the slit and the joining hole button die 25 and lowering the upper holder 5.

Next, after the slit joining hole B is machined, the upper boulder 5 is raised, and the workpiece W is sequentially sent to the right in FIG.
The slit C is bent by the flange die and bonde 35 (not shown), and the slit E is formed by the cutting slit 1 to the processing punch 39 and the cutting slit 1 to the processing die 43. [J-cut hole A and slit joint hole B
C is processed in almost the same way as when C was processed,
The finished product F shown in Figure 3 is completed.

In this way, each time the workpiece W is sequentially fed by the workpiece feeding device (not shown), the finished product F is produced using the progressive press die.
is completed.

Pressing by the conventional progressive press type as described above
1 In the progressive press processing method, the width a1 of the scrap generated when machining the slit C or the width a of the scrap generated when machining the separation slit E is shown in Fig. 2 ().
exists. Therefore, in order to obtain the width of the finished product F, the width of the workpiece W must be a plus the width of the scrap, a
[The yield of workpieces has decreased.]

In addition, as another conventional example, let the slit width be 1].
In order to avoid this, some products are notched, but this is shown in Figure 4~
This will be explained using FIG.
is sent from left to right by a workpiece feeding device (not shown).

J5, the same parts as in FIG. 1 are designated by the same reference numerals to simplify the explanation.

The upper holder 5 on the workpiece feed direction side of the slit joint hole punch 21 in FIG. The notch machining die 44 notches the workpiece W with the notch machining die 44 and the notch machining upper blade 47 of -C with the lower holder 11.
It is attached to the upper holder 49.

A pad 33 and a bending punch 35 similar to those shown in FIG. There is. Furthermore, an upper cutting blade 51 for cutting is vertically provided on the upper holder 5 on the workpiece feeding direction side of the bending punch 35, and the upper blade 51 for cutting is used to cut the workpiece W. Lower blade 53 for cutting off
is attached to the holder 55 of the upper holder 11''.

Other components are substantially the same as in FIG. 1.

The operation of the 4 progressive press processing method using the conventional progressive press type as described above will be explained. 5 and 6 are a plan view and a front view of a product pressed by this press mold, and FIG. 7 is a finished product produced by this press mold.

In the case of this press die, the workpiece W is sent to the progressive press die from the left side in FIG. 4 by a workpiece feeding device (not shown) in substantially the same manner as in FIG. 1. And work W
In this case, the pyrower 1 to the hole A and the slit joining hole B are processed in substantially the same manner as in FIG. 1.

After the pilot hole A and the slit joint hole 8 are machined, the upper blade 45 for notching
The notching part G is formed by the lower blade 47 for notching, the bending part G is formed by the flange die (not shown) and the bending punch 35, and the lower blade 53 is formed by the upper blade 51 for cutting and the lower blade 53 for cutting I. The second part 1-1 is processed by lowering the tenth holder 5 once in substantially the same manner as shown in FIG.
The finished product J shown in the figure is completed.

In this way, each time the workpieces W are sequentially fed by the workpiece feeding device (not shown), the finished product J is pressed up by the progressive press mold.

In the progressive press processing method using the conventional progressive press type described above, after processing the bending part in flange processing, the flange die (not shown) is lifted up and the left side of the flange die forms a notch in the workpiece W. In order to rub the fractured surface of part G, burr debris K is generated ITJ.

If you do this after notch processing, it will involve the burr waste K! A machining indentation [occurs].

In this case, as shown in Fig. 5, since there are no slits C and separation slits U as shown in Fig. 2, the bending part is continuously bent. The deformed part M is formed by the end of the bent part that has been bent from the beginning overlapping the end of the bent part that has been bent one step before.

This invention was devised in view of the above-mentioned conventional problems, and it prevents a decrease in the yield of workpieces, prevents the occurrence of impressions on products due to the generation of burr debris, and also prevents the occurrence of dents on products at the edges of bent and curved parts. The purpose of this work is to provide a progressive press processing method that makes it possible to prevent deformation due to overlap.

In order to achieve this object, the present invention applies embossing to the slitting or notching position of the workpiece prior to slitting or notching in the progressive press processing method, and after slitting or notching, the above-mentioned The embossing is flattened to make it substantially flat.

Hereinafter, one embodiment of the present invention will be described in detail based on FIGS. 8 to 11. Note that the same parts as in the conventional example are given the same reference numerals to simplify the explanation.

Note that the notching 1 described here also includes narrow slit processing.

A 1-emboss die 59 as an embossing die 57 is vertically installed on the upper holder 5 on the workpiece feeding direction side of the slit bonding hole bonder 21 in FIG.
An embossing punch 61 as an embossing die 57 is mounted on the holder 11.

Then, on the work feed direction side of the embossing die 57 (
A lower blade 45d3 for notching and a lower blade 47 for notching which are substantially similar to those shown in FIG. A flat die 65 as a working mold 63 is installed vertically, and a flat die 67 as a flat processing mold 63 is installed in the upper holder 11 below the flat die 65.

One holder 5 on the workpiece feed direction side of the flat die 65 has a pad 33 similar to IL+1 in FIGS. 1 and 4, and a flange die not shown in the figure. 11 is provided with a punch 35.

A pilot bin 69 is vertically installed in one small rudder 5 at the approximate center of the pad 33, and an escape hole 71 for the pylon 1 pin 69 is bored in the punch 35 below the pilot bin 69.

Further, on the workpiece feed direction side, a punch 39 for cutting and slitting and a die 43 for cutting and slitting, which are substantially similar to those shown in FIG. 1, are provided.

In the progressive press mold configured as described above, the workpiece W is fed to the progressive press mold from the left side of FIG. 8 by a workpiece feeding device (not shown). Then, the pylobes 1 to hole A and slit bonding hole B are added to f[j, in which the workpiece W is sequentially sent from the outside to the right]-2, respectively, in substantially the same way as in FIGS. 411 and 4.

After the slit joint hole B is machined, the upper holder 57J(''-
The workpiece W is raised and the embossing die 57 and the embossing punch 6
When the lower holder 5 is lowered, the second part N is embossed.

After the embossed part N is processed, the lower holder 5 is raised, and the workpiece W is sent to a predetermined position where it can be notched by the upper notching blade 45 and the notching F blade 47.
By lowering the upper holder 5, the notch processing portion G is processed.

When the notched part G is machined, the lower holder 5 rises, and the workpiece W enters between the flange die 65 and the dies 1 to 67, and the upper holder 5 descends and covers the embossed part N. Then, the workpiece W extends in the feeding direction.

When the embossed part N of the workpiece W is crushed and the workpiece W extends in the feeding direction, the soil holder 5 is tilted upward, the workpiece W enters between the pad 33 and the bending punch 35, and the workpiece W is pushed into the lower holder. 5 is lowered, the pie rower 1 to pin 69 passes through the pie [Jtsu 1 to hole A]
1, the bending part is processed using a flange die (not shown).

Bending [When the two parts are processed, the lower holder 55 is on the upper side?]
Then, the workpiece W enters between the punch J 9 for cutting and slitting and the die 43 for cutting and slitting, and as the soil holder 5 descends, the separating slit F is processed and the finished product P is produced.

In this way, each time the workpieces W are sequentially fed by the workpiece feeding device (not shown), the upper holder 5 is lowered, so that the punches and the like are also lowered, and the workpieces W are processed at the same time.

As described above, in this invention, a progressive press die is provided with a notching die and an embossing die, and the embossing portion that was performed on the workpiece W with this embossing die is installed in the progressive press die. After flattening the workpiece with a mold and stretching it, the bending process was performed.

However, by cutting off the extended part of the °C1 workpiece, a finished product can be produced, making it possible to prevent low yields of the workpiece.

In addition, flat processing stretches the workpiece and separates the notched RJi surface, making it possible to prevent the formation of debris and ΣF marks on the product due to the bending punch. It is also possible to prevent slight deformation of some edges.

It should be noted that the present invention is not limited to the above-described embodiments, and may be implemented in modes other than the above-described embodiments.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a conventional progressive press die, Figs. 2 and 3 are a plan view of the process product and a perspective view of the finished product, Fig. 41! IIJ and other conventional progressive press type σ] Schematic diagram, Figure 5~! !
Figure 7 shows this press die. IL side view, front view, and perspective view of the finished product of the culm product, Volume 8, Volume 1 (Schematic diagram of the progressive press die of this invention, Figures 459 to 1') Figure 1 shows the fake bracelet of this invention.
Convex plan view, front view, and perspective view of the finished product 1゜ (representing the main parts of the drawing, Jungetsu theory 1-1) 44... Mold for notching 57... Mold 63 for 1-in. ...Mold for flat processing

Claims (1)

[Claims] A progressive press processing method in which a plate-shaped workpiece is slit or notched in a direction substantially perpendicular to the feed direction, and then at least one of the right and left sides of the workpiece is bent in the feed direction. In step 1, prior to processing or notching, embossing is applied to the slit I & or notching position of the workpiece, and after processing or notching,
A progressive press processing method characterized in that a flat processing is performed to make the embossing substantially flat.