JP5371177B2 - Bending die in punch press and processing method using the bending die - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bending die of a punch press with which the value as a product is held without forming protrusions on the side of the product by cutting a product part from a work, the constitution of a mechanism for dealing with springback is simple and the installation space is saved and a working method using the bending die. <P>SOLUTION: This bending die has a freely rotatable punch die and a dieing die, and the punch die and the dieing die are respectively provided with a corresponding bending blade and a corresponding cutting blade. The bending blade on the side of the dieing die is provided freely attachably and detachably. A corresponding slope is provided on the bottom face of a stripper plate at the lower end of a punch guide with which the punch die is composed and the top face of the dieing die. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

The present invention relates to a bending die in a punch press such as a single punch press or a turret punch press, and a processing method using the bending die.

For example, JP-A-2004-122169 discloses a bending die in a conventional punch press.

The punch die side of this bending die has a bending blade protruding sideways at the lower end of the punch tip (FIG. 1 of the same publication), and the punch tip can be moved in the protruding direction of the bending blade. Thus, considering the spring back of the workpiece, for example, an overbend that is a bending exceeding 90 ° is possible.

With this configuration, if the workpiece with the product part connected at the micro joint part is placed on the die mold (FIG. 7 of the same publication), the product part is positioned, and the punch mold is lowered, If the bending blade and the corresponding bending blade on the die mold side overbend the product part, then the microjoint part is positioned and the punch mold is lowered again. The micro joint part is separated by the corresponding bending blade on the die and die side.
JP 2004-122169 A

However, in the above prior art, the micro joint part connecting the product part to the workpiece is separated by the bending blade on the punch die side having a bending function and the corresponding bending blade on the die die side.

That is, separation processing is performed by a bending blade dedicated to bending processing.

  As a result, the product part and the micro joint part are separated so as to be torn off, and a protrusion is formed on the product part side, so that the value as a product is lowered.

In addition, as described above, the above-described prior art enables overbending to cope with the spring back during bending.

In this case, for example, as shown in FIG. 3 of the publication, the spring back support mechanism includes a punch chip pressing member provided on the upper surface of the stripper plate, a vertical surface of the punch chip cooperating with the punch chip pressing member, and It is comprised by the inclined surface.

However, as described above, this springback mechanism must be provided with a punch tip pressing member on the upper surface of the stripper plate, and on the punch tip side, a vertical surface and an inclined surface that cooperate with the punch tip pressing member. Must be provided.

  As a result, the conventional springback mechanism has a very complicated structure and requires a large space for installation.

The object of the present invention is to cut the product part from the workpiece, so that no protrusion is formed on the product side, the value as a product is maintained, the structure of the springback support mechanism is simple, and the installation space is reduced. Provided is a bending die in a punch press that is saved and a processing method using the bending die.

In order to solve the above problems, the present invention, as described in claims 1 and 6,
It has a rotatable punch die P and a rotatable die die D. The punch die P and die die D have bending blades 3 and 25 for bending the bending lines m1 and m2 of the product S. and bending the portion of the cutting line c product S after processing was cut, and the cutting blade 4,33 you discharged to the outside through the die hole 31 provided the product S to the die tool D are respectively provided Bending molds in the punch press (Figs. 1 and 7),
A processing method in a punch press using the above bending mold,
(1) With the workpiece W positioned at the bending position held by the punch die P and the die die D, the punch body 1 is lowered and the bending blade 3 at the lower end of the punch body 1 and the upper surface of the die die D After bending with the bending blade 25 of
(2) With the punch die P raised, the workpiece W after bending in a state positioned in the die hole 31 is rotated by the die P and D comprising the punch die P and the die die. After positioning at a position where no interference occurs, the molds P and D are rotated by a predetermined angle,
(3) Thereafter, with the workpiece W positioned at the cutting position held by the punch die P and the die die D, the punch body 1 is lowered and the cutting blade 4 and the die die at the lower end of the punch body 1 are lowered. A technical means of a processing method (FIG. 6) in a punch press characterized by cutting with a cutting blade 33 on the upper surface of D is taken.

According to the configuration of the present invention, the sharp cutting blades 4 and 33 dedicated to the cutting process are provided facing the bending blades 3 (FIG. 1) and 25, thereby connecting the product S portion and the workpiece W to each other. Since the joint part is not required and the product S part (Figs. 4 and 5) and the workpiece W can be directly connected, the cutting blade 4 (Fig. 6 (E)) and 33 can be used to remove the workpiece W from the workpiece W. If the product S part is cut, no protrusion is formed on the product S side, and the value as the product S is maintained, and it corresponds to the lower surface of the stripper plate 6 on the punch die P side and the upper surface of the die die D. By providing the inclined surfaces 6A and 35A, if the workpiece W is pressed by the inclined surfaces 6A and 35A on the punch die P side and the die die D side, for example, the bending line m1 portion of the workpiece W is bent. (Fig. 6 (A)), overbend is possible with the spring back (Fig. 6 (B)) in mind (Fig. 6 (A)). Since the springback mechanism can be configured simply by providing the inclined surfaces 6A and 35A on the lower surface of the stripper plate 6 and the upper surface of the die mold D, the structure of the springback mechanism is extremely simple and installation space is saved. Is done.

  As described above, according to the configuration of the present invention, the product portion is cut from the workpiece, so that no protrusion is formed on the product side, the value as a product is maintained, and the structure of the springback mechanism is simple. There is an effect of providing a bending die in a punch press and a processing method using the bending die that save installation space.

In addition, according to the configuration of the present invention, the horizontal surface 35B is provided on the upper surface of the die die D (FIG. 1) on the high position side of the inclined surface 35A, so that the workpiece W is processed during processing. (FIG. 6) Even if it slides on the upper surface of the die mold D, there is an effect that the lower surface of the work W is hardly scratched.

Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments.
FIG. 1 is a view showing a first embodiment of a bending mold according to the present invention.

  This bending die is applied to a single punch press (FIG. 3), which will be described later. The bending die comprises a punch die P and a die die D, and performs bending and cutting of the workpiece W.

Among these, the punch die P (FIG. 1) has a punch body 1 and a punch guide 2.

The punch body 1 has a blade portion 12, and a shank 8 locked by a chuck 21 of a lock mechanism 17 (FIG. 3), which will be described later, is attached to the blade portion 12 via a screw portion 9. And are attached together.

At the lower end of the blade portion 12 (FIG. 1), a bending blade 3 is provided on the lower position side of the inclined surface 6A provided on the lower surface of the stripper plate 6 described later, and a cutting blade 4 is provided on the higher position side. Is provided.

The bending blade 3 protrudes below the cutting blade 4 as shown in FIG.

The punch guide 2 (FIG. 1) is composed of a punch carrier 11 and a stripper plate 6 and has a function of guiding the punch body 1 and pressing the work W. Supported by the support block 22, the height position can be adjusted by the lift cylinder 23.

  As described above, the stripper plate 6 having a function of pressing the workpiece W is attached to the lower end of the punch carrier 11 constituting the punch guide 2 (FIG. 1). A cutting edge insertion hole 5 through which the bending blade 3 and the cutting blade 4 constituting the blade portion 12 of the body 1 pass is provided (FIG. 2).

  Furthermore, as described above, the inclined surface 6A is provided on the lower surface of the stripper plate 6 (FIG. 1), and together with the inclined surface 35A provided on the upper surface of the die mold D described later, the springback mechanism according to the present invention. Is configured.

Further, a step portion 10 is formed in the punch guide 2 by the inner surface of the punch carrier 11 and the upper surface of the stripper plate 6, and the punch body 1 is moved up and down by operating a ram cylinder 15 described later (FIG. 3). Then, the bottom surface of the punch holder 7 (FIG. 1) approaches and separates from the bottom surface of the stepped portion 10.

For example, when bending the workpiece W by lowering the punch body 1 (FIG. 6 (A) → FIG. 6 (B)), the ram stroke is relatively shallow, and the bottom surface of the punch holder 7 (FIG. 1) It approaches the bottom surface of the stepped portion 10 on the punch guide 2 side.

However, similarly, when the workpiece W is cut by lowering the punch body 1 (FIG. 6 (E)), the ram stroke is deeper and the bottom surface of the punch holder 7 (FIG. 1) is closer to the punch guide 2 side. Approaches the bottom surface of the step 10 of.

Further, when the punch body 1 is raised together with the punch guide 2 and the workpiece W is positioned at a mold non-interference position T described later (FIG. 6C), the bottom surface of the punch holder 7 is shown in FIG. Located farthest from the bottom surface of the stepped portion 10 on the punch guide 2 side.

On the other hand, the die die D (FIG. 1) is supported on the die holder 34, and an inclined surface 35A corresponding to the inclined surface 6A of the punch die P is provided on the upper surface of the die die D. As described above, the spring back support mechanism is formed by the two inclined surfaces 6A and 35A (FIG. 6A).

Further, on the inclined surface 35A (FIG. 1) on the upper surface of the die mold D, the inner edge of the die hole 31 is cut with a bending blade 25 corresponding to the bending blade 3 and the cutting blade 4 of the punch die P. Each blade 33 is provided (FIG. 2).

  In this case, the bending blade 25 on the die die D side is in a chip form and is provided detachably with respect to the inclined surface 35A, and can be exchanged according to the plate thickness of the workpiece W. The clearance between the bending blade 3 on the punch die P side and the bending blade 25 on the die die D side can be adapted to the thickness of the workpiece W.

  Furthermore, a horizontal surface 35B is provided on the upper surface of the die mold D and outside the inclined surface 35A on the high position side (FIGS. 1 and 2). Even if the upper surface of the mold D is slid, the lower surface of the workpiece W is hardly scratched.

  FIG. 3 shows an example in which the bending die shown in FIG. 1 is applied to a single punch press having only a pair of dies P and D without a turret.

  In FIG. 3, a support frame 14 is fixed to the upper frame 13, and a ram cylinder 15 is installed on the support frame 14.

The lower piston rod 16 of the ram cylinder 15 is provided with a lock mechanism 17, and the upper piston rod (not shown) includes an index gear (not shown) and an index motor, as is well known. A mold rotating device is coupled so that the rotation of the punch mold P is indexed.

The lock mechanism 17 has a sleep 18, and a lock cylinder 19 is built in the sleep 18, and the chuck 21 is attached to the lower end of the piston rod 20 so that the shank 8 of the punch body 1 is attached. The punch body 1 is locked by pinching.

The above-described lifting cylinder 23 is provided on the side of the support frame 14, and a support block 22 is attached to the lifting cylinder 23, and the support block 22 is connected to the support block 22 via a claw 24. A punch guide 2 is supported.

Immediately below the punch mold P, the above-described die mold D is installed, and the die holder 34 is supported by the support block 26 via the claw 27. The support block 26 includes the index gear 32 and the index gear. The die mold D is rotated by a mold rotating device composed of a motor 28 and the die mold D is indexed.

The support frame 29 fixed to the lower frame (not shown) guides the vertically moving body 30, and the die die D locked to the upper surface of the vertically moving body 30 can be positioned on the pass line PL. Yes.

  Hereinafter, the operation of the first embodiment of the present invention having the above-described configuration will be described with reference to FIGS.

In this case, the workpiece W shown in FIG. 4 is to be processed, and a portion to be the product S is directly connected to the workpiece W, and a space is formed around the product S portion. According to the invention, as will be described later (FIG. 6), finally, for example, a U-shaped product S (FIGS. 4 and 6E) having flanges at both ends is processed by bending and cutting. Is done.

  Further, as shown in FIG. 4, the product S portion is formed with the bending line m1 (FIG. 4) by the bending blade 3 on the punch die P (FIG. 1) side and the bending blade 25 on the die die D side. ), The bending line m2 is bent, and the product S portion and the workpiece W are separated by the cutting blade 4 on the punch die P (FIG. 1) and the cutting blade 33 on the die die D side. It is assumed that the portion of the cutting line c (FIG. 4) located at the boundary is cut.

(1) Bending operation.
First, by placing the workpiece W on the inclined surface 35A of the die mold D (FIG. 6A) and positioning the bending line m1 portion of the workpiece W above the bending blade 25 of the die mold D, Position the workpiece W at the bending position.

Then, the ram cylinder 15 and (FIG. 3) the raising / lowering cylinder 23 are operated, and the bending blade 3 at the tip of the punch body 1 is hidden in the cutting edge insertion hole 5 of the stripper plate 6 (corresponding to FIG. 6C). When the punch die P is lowered, first, the workpiece W is pressed by the inclined surface 6A on the lower surface of the stripper plate 6 and the inclined surface 35A on the upper surface of the die die D, as shown in FIG.

Therefore, if the lifting cylinder 23 is stopped at that time (FIG. 3) and only the ram cylinder 15 is continuously operated, then, as shown in FIG. After the bending blade 3 at the tip of the punch body 1 passes through the blade edge insertion hole 5 while being pressed by 35A, the bending line m1 portion of the workpiece W cooperates with the bending blade 25 on the die die D side immediately below the punching blade 5 Is bent.

At this time, as shown in the figure, since the workpiece W is held down by the both inclined surfaces 6A and 35A, the bending line m1 portion of the workpiece W can be overbended by bending exceeding 90 °.

Next, after raising the punch die P as a whole, the next bend line m2 portion of the workpiece W is positioned above the bending blade 25 of the die die D as shown in FIG. 6 (B). Then, the workpiece W is positioned at the bending position, and the bend line m2 is overbended by the same operation as that shown in FIG.

(2) Dies P and D rotate.
When the bending operation of FIG. 6 (A) and FIG. 6 (B) is finished, as shown in FIG. 6 (C), the workpiece W is moved to the dies P and D with the entire punch die P raised. Is positioned at a position where it does not interfere even if it rotates, that is, a mold non-interference position T.

As shown in FIG. 6B, when the bending process is completed, the bend line m2 is in contact with the bending blade 25 on the die mold D side, and the punch mold P and the die mold remain as they are. Even if the molds P and D made of D are rotated, the workpiece W interferes with the die mold D.

For this reason, the position of the last bend line m2, in other words, the position of the bend line m2 at the time of final bending is shown in a position where the workpiece W does not interfere even when the molds P and D are rotated, for example, FIG. In this way, the mold center T is positioned.

Thereafter, the punch rotating device (FIG. 3) of the punch die P and die die D described above is operated, and the die P and D are rotated by a predetermined angle as shown in FIG. 6 (D).

  At this time, as apparent from comparing FIG. 6D with FIGS. 6A to 6C, the inclined surfaces 6A and 35A on the punch die P side and the die die D side after the rotation are obtained. Is inclined in the opposite direction, with the low position side to the left and the high position side to the right, and the corresponding bending blades 3 and 25 and cutting blades 4 and 33 are also positioned in the opposite direction. The blades 3 and 25 are located on the left, and the cutting blades 4 and 25 are located on the right.

  In this case, the rotation angles of the molds P and D are 180 ° (FIG. 5A), slightly larger than 180 ° (FIG. 5B), or slightly smaller than 180 °.

In this case, the rotation angles of the molds P and D depend on the flange shape of the final product S (FIG. 4), that is, the cutting lines c1 to c4 set on the product S portion (FIG. 5). ) Position and angle.

The cutting line c1 in FIG. 5 (A) is the case where the cutting line c1 in FIG. 5A is located at the boundary between the product S part and the workpiece W and crosses the product S part at an angle of 90 °. .

Therefore, in this case, if the molds P and D are rotated, for example, 180 ° counterclockwise (FIG. 6D), the angles of the cutting blade 4 and the cutting blade 33 on the mold P and D side are As shown in FIG. 5A, the angle is 90 ° with respect to the product S portion of the workpiece W.

After that, if the position of the cutting line c1 is positioned above the cutting blade 33 of the die D, the cutting line c1 and the positions of the two cutting blades 4 and 33 coincide with each other. Corresponding to FIG. 6E) If the cutting line c1 is cut, the desired product S is processed.

The cutting line c2 in FIG. 5 (A) is slightly inside the product S portion compared to the cutting line c1, but, like the cutting line c1, crosses the product S portion at an angle of 90 °. Is the case.

Therefore, in this case, if the molds P and D are rotated 180 ° counterclockwise (FIG. 6D), the angles of the cutting blades 4 and the cutting blades 33 on the mold P and D side are as shown in FIG. As shown to (A), it becomes an angle of 90 degrees with respect to the product S part of the workpiece | work W. FIG.

Thereafter, if the position of the cutting line c2 is positioned above the cutting blade 33 of the die D, the cutting line c2 and the positions of the two cutting blades 4 and 33 coincide with each other. In this state, as described later ( Corresponding to FIG. 6E) If the cutting line c2 is cut, the desired product S is processed.

A cutting line c3 in FIG. 5B is a case where the product S portion is traversed at an angle of 110 °, as shown in the figure.

Therefore, in this case, if the molds P and D are rotated 200 degrees counterclockwise (FIG. 6D), the angles of the cutting blades 4 and the cutting blades 33 on the mold P and D side are as shown in FIG. As shown in (B), the angle is 110 ° with respect to the product S portion of the workpiece W.

After that, if the position of the cutting line c3 is positioned above the cutting blade 33 of the die D, the cutting line c3 and the positions of the two cutting blades 4 and 33 coincide with each other. In this state, as described later ( Corresponding to FIG. 6E) If the cutting line c3 is cut, the desired product S is processed.

A cutting line c4 in FIG. 5B is a case where the product S portion is crossed at an angle of 70 °, as shown.

Therefore, in this case, if the molds P and D are rotated by 160 ° counterclockwise (FIG. 6D), the angles of the cutting blade 4 and the cutting blade 33 on the mold P and D side are as shown in FIG. As shown in (B), the angle is 70 ° with respect to the product S portion of the workpiece W.

After that, if the position of the cutting line c4 is positioned above the cutting blade 33 of the die D, the cutting line c4 and the positions of the two cutting blades 4 and 33 coincide with each other. Corresponding to FIG. 6E) If the cutting line c4 is cut, the desired product S is processed.

(3) Cutting operation.
Finally, the workpiece W is positioned at the cutting position by positioning the cutting line c portion of the workpiece W (FIG. 6D) above the cutting blade 33 of the die D.

  Thereafter, as shown in FIG. 6 (E), the work W is held by the inclined surface 6A on the punch die P side and the inclined surface 35A on the die die D side, and then the state shown in FIGS. The punch body 1 is moved down by a deeper ram stroke than in the case of), and the cutting line c is cut by the cutting blade 4 of the punch die P and the cutting blade 33 of the die die D.

  Thus, the desired product S is processed, and the product S (FIG. 6E) is discharged to the outside through the die hole 31.

FIG. 7 is a view showing a second embodiment of a bending die according to the present invention.

The bending die shown in FIG. 7 is applied to a turret punch press (FIG. 8), which will be described later. The bending die is similarly composed of a punch die P and a die die D, and bending and cutting work W The punch die P and the die die D are both connected to a die rotating device (not shown) and can be rotated by a predetermined angle (corresponding to FIG. 6D).

Among these, the punch die P (FIG. 7) has a punch body 1 and a punch guide 2.

The punch body 1 has a blade portion 12 and is guided by a punch guide 2 to move up and down.

    Similarly, at the lower end of the blade portion 12 (FIG. 7), a bending blade 3 is provided on the lower position side of the inclined surface 6A provided on the lower surface of the stripper plate 6, and a cutting blade 4 is provided on the higher position side. Are provided.

Similarly, the bending blade 3 protrudes below the cutting blade 4.

Further, as described above, the punch guide 2 has a function of guiding the punch body 1 and pressing the workpiece W (for example, corresponding to FIG. 6A), and lifts to the upper turret 41 (FIG. 8) described later. It is supported via a spring 40.

  As described above, the stripper plate 6 having the function of pressing the workpiece W is attached to the lower end of the punch guide 2, and the bending portion constituting the blade portion 12 of the punch body 1 is attached to the central portion of the stripper plate 6. A blade edge insertion hole 5 through which the blade 3 and the cutting blade 4 pass is provided.

  Furthermore, as described above, the inclined surface 6A is provided on the lower surface of the stripper plate 6 (FIG. 7), and together with the inclined surface 35A provided on the upper surface of the die mold D described later, the springback mechanism according to the present invention. Is configured.

On the other hand, on the upper surface of the die mold D (FIG. 7), similarly, an inclined surface 35A corresponding to the inclined surface 6A of the punch mold P is provided. (For example, corresponds to FIG. 6A).

Further, on the inclined surface 35A (FIG. 7) on the upper surface of the die die D, the inner edge of the die hole 31 is cut with the bending blade 25 corresponding to the bending blade 3 and the cutting blade 4 of the punch die P. Each blade 33 is provided.

  Also in this case, the bending blade 25 on the die die D side is a chip type, and is detachably provided on the inclined surface 35A, and can be exchanged according to the thickness of the workpiece W. Thus, the clearance between the bending die 3 on the punch die P side and the bending blade 25 on the die die D side can be adapted to the plate thickness of the workpiece W.

  Furthermore, a horizontal surface 35B is provided on the upper surface of the die mold D and outside the high position side of the inclined surface 35A (FIG. 7), and during processing (corresponding to FIG. 6), the workpiece W is the die mold. Even if the upper surface of D is slid, the lower surface of the workpiece W is hardly scratched.

FIG. 8 shows an example in which the bending die shown in FIG. 7 is applied to a turret punch press.

The upper turret 41 and the lower turret 42 are equipped with a plurality of punch dies P and die dies D, and by rotating both turrets 41 and 42 in synchronization, the desired punch dies P and die dies D are The workpiece W is positioned immediately below the ram cylinder 44 provided in the upper frame 43, and the ram cylinder 44 is operated to perform, for example, bending and cutting on the workpiece W by the cooperation of both molds P (FIG. 7) and D. (Corresponding to Fig. 6).

As described above, the punch guide 2 constituting the punch die P is supported by the upper turret 41 (FIG. 8) via the lift spring 40.

  This punch guide 2 is supported by the punch body 1 described above via a stripper spring 39 having retainer collars 37 and 38 on the upper and lower sides, a punch head 36, and a punch body small diameter portion 35 screwed into the punch head 36. Has been.

The lower turret 42 is provided with the die die D described above.

The operation of the second embodiment having the configuration shown in FIG. 7 is exactly the same as the operation (FIG. 6) of the first embodiment (FIG. 1), and therefore the description thereof is omitted.

As described above, according to the present invention, the product portion is cut from the workpiece, so that no protrusion is formed on the product side, the value as a product is maintained, the structure of the springback support mechanism is simple, and the installation space. It is used in a bending die and a processing method using the bending die in a punch press that saves space, and is not only useful for a single punch press but also a turret punch press and is extremely useful.

It is a figure which shows 1st Embodiment of the bending die by this invention. FIG. 2 is a detailed view of FIG. FIG. 2 is a diagram illustrating an application example of FIG. It is a figure explaining the workpiece | work W which is a process target of this invention. It is a figure which shows the example of rotation of metal mold | die P, D by this invention. FIG. 2 is an operation explanatory diagram of FIG. It is a figure which shows 2nd Embodiment of the bending die by this invention. FIG. 8 is a diagram illustrating an application example of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Punch body 2 Punch guide 3 Bending blade of punch die P 4 Cutting blade of punch die P 5 Cutting edge insertion hole 6 Stripper plate 7 Punch holder
8 Shank 9 Screw part 10 Step part of punch guide 2
11 Punch carrier 12 Blade portion 13 Punch press upper frame 14 Support frame 15 Ram cylinder 16 Lower piston rod 17 of the ram cylinder 15 Lock mechanism 18 Sleep 19 Lock cylinder 20 Piston rod 21 Chuck 22 Punch die P support block 23 For raising and lowering Cylinder 24 Claw 25 Cutting edge 26 of die die D Support block 27 Claw 28 Index motor 29 Support frame 30 Vertical moving body 31 Die hole 32 Index gear 35 Punch body 1 small diameter portion 36 Punch head 37, 38 Retainer collar 39 Stripper Spring 40 Lift spring 41 Upper turret 42 Lower turret 43 Upper frame of turret punch press 44 Ram cylinder D Die mold P Punch mold PL Pass line W Work S Product

Claims (7)

There are a rotatable punch mold and a rotatable die mold. The punch mold and the die mold include a bending blade for bending a bending line portion of the product and a cutting line for the product after bending . portion was cut and bending molds in a punch press, characterized in that the cutting blade you discharged to the outside through the die hole formed in the die mold are respectively provided the product. The bending die in the punch press according to claim 1, wherein the bending blade on the die die side is detachably provided. 2. The bending die in a punch press according to claim 1, wherein a corresponding inclined surface is provided on the lower surface of the stripper plate at the lower end of the punch guide constituting the punch die and the upper surface of the die die. A lower end of the punch body constituting the punch die, a bending blade is provided on the lower position side of the inclined surface of the lower surface of the stripper plate, and a cutting blade is provided on the higher position side, and the inclined surface of the upper surface of the die mold 4. The bending die in the punch press according to claim 1, wherein a bending blade and a cutting blade corresponding to the bending blade and the cutting blade on the punch die side are provided on the inner periphery of the die hole. 4. The bending die in a punch press according to claim 3, wherein a horizontal surface is provided on the upper surface of the die die and outside the inclined surface at a high position side. A processing method in a punch press using the bending die according to claim 1,
(1) With the workpiece positioned at the bending position held by the punch die and die die, the punch body is lowered and bent by the bending blade at the lower end of the punch body and the bending blade at the upper surface of the die die. rear,
(2) With the punch die raised, the workpiece after bending in a state positioned in the die hole is positioned at a position where it does not interfere even if the die composed of the punch die and the die die rotates. Then, the mold is rotated by a predetermined angle,
(3) Thereafter, with the workpiece positioned at the cutting position held by the punch die and the die die, the punch body is lowered and cut by the cutting blade at the lower end of the punch body and the cutting blade at the upper surface of the die die. The processing method in the punch press characterized by processing. In (1) or (3) above, when pressing the workpiece positioned at the bending or cutting position with a punch die and a die die, hold it with the inclined surfaces on the punch die side and die die side. The processing method in the punch press according to claim 6.

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