JP2003311333A - Raising and falling method by punch press, and punch die and die used for the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To alternately machine a work in an upward direction and a downward direction. <P>SOLUTION: A raising and falling method by a punch press for machining up and down parts by a punch and a die provided on a punch press comprises (A) a step of positioning the position to machine a down part of the work to the position corresponding to a downward punch provided on a punch die 11 and a bend die provided on a die, (B) a step of machining the down part by the downward punch provided on the punch die 11 and a holding die provided on the die, (C) a step of positioning the position to machine an up part of the work to the position corresponding to the holding die provided on the punch die and an upward punch provided on the die, and (D) a step of machining the up part by the holding die provided on the punch die and the upward punch provided on the die. The up and down parts of the work are machined based on the above steps. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a start-up / fall-down processing method for forming a rising portion and a falling portion by a punch die and a die die provided in a punch press, and a punch used in the method. It relates to a die and a die die.

[0002]

2. Description of the Related Art Heretofore, as a molding die for forming a work, there has been known one as shown in, for example, Japanese Patent No. 254176. That is, the work is upwardly shaped by the cooperation of the punch ejector mounted on the tip of the punch body and the die chip mounted on the ejector plate.

[0003]

By the way, the above-mentioned conventional molding dies only perform upward forming processing on a work, and one molding die is used to form the work upward and downward. The processing could not be performed alternately.

The present invention has been made to solve the above-mentioned problems, and an object thereof is a start-up / fall-down processing method and a start-up / down processing method using a punch press which can alternately perform upward and downward forming processing on a work. It is to provide a punch die and a die die used in the method.

[0005]

In order to achieve the above object, according to a first aspect of the present invention, a punch press according to the present invention comprises a punch press and a punching method. Further, in the method of raising and lowering by the punch press for forming the falling portion, (A), the position for processing the falling portion of the work is provided in the downward punch and die die provided in the punch die. Positioning at a position corresponding to the pressing die, (B), processing a falling part with a downward punch provided in the punch die and a pressing die provided in the die die, (C), rising of the work Positioning the position for processing the part to a position corresponding to the pressing die provided in the punch die and the upward punch provided in the die die,
(D), a step of processing a rising portion by a pressing die provided in the punch die and an upward punch provided in a die die, and performing a forming operation for raising and lowering a work based on the above steps It is characterized by.

According to a second aspect of the present invention, there is provided a punch press startup / falling processing method according to the first aspect of the present invention. A step of slightly moving the downward punch provided in the punch die toward the pressing die provided in the die die during processing, (F), preparing the die die when forming the rising part of the work In addition, the step of slightly moving the upward punch in the direction of the pressing die provided in the punch die, and the forming work for raising and lowering the workpiece based on the above steps are performed.

The punch die of the present invention according to claim 3 is
A pressing die for forming the rising part of the work in cooperation with the die die and a downward punch for forming the falling part of the work are provided adjacent to each other. It is characterized in that the rising portion is provided with a vacant space that can be freely inserted.

The punching die of the present invention according to claim 4 is
The punch die according to claim 3, wherein the downward punch is provided so as to be movable in a direction orthogonal to a bending line position.

The punching die of the present invention according to claim 5 is
The punch die according to claim 3 or 4, wherein the pressing die is vertically rotatable.

The punching die of the present invention according to claim 6 is
The punch die according to claim 3, 4 or 5, wherein the vicinity of the tip of the downward punch is projected in a direction orthogonal to the bending line position.

A punch die of the present invention according to claim 7 is
The punch die according to claim 3, 4, 5 or 6,
It is characterized in that an escape portion is formed on the upper portion of the pressing die to perform acute-angle bending.

According to a eighth aspect of the present invention, there is provided a die die according to the present invention, which comprises a pressing die for forming a falling portion of a work in cooperation with a punch die, and an upward die for forming a rising portion of the work. It is characterized in that it is provided with a punch adjacent to it, and has a cavity in which a falling portion can freely enter in correspondence with the pressing die.

The die die of the present invention according to claim 9 is the die die according to claim 8, wherein the upward punch is
It is characterized in that it is provided so as to be movable in a direction orthogonal to the bending line position.

The die die of the present invention according to claim 10
The die die according to claim 8 or 9, wherein the vicinity of the tip of the upward punch is projected in a direction orthogonal to the bending line position.

The die die of the present invention according to claim 11 is
The die die according to claim 8, 9 or 10, wherein a relief portion is formed on an upper portion of the pressing die to perform acute-angle bending.

Therefore, according to the method for starting and stopping by the punch press according to the first to eleventh aspects and the punch and die dies used for the method, upward and downward forming processes can be performed on the work. It is possible to obtain molded products of upward and downward with high accuracy and easy to perform alternately.

Since the work is fixed by the work clamp, when the vicinity of the work clamp is bent, the work is sandwiched by the punch die and the work clamp, and the work cannot be dropped.

At that time, if the pressing die of the punch die is rotatable, it can be easily dropped.

Since the vicinity of the tips of the downward punch and the upward punch protrudes in a direction orthogonal to the bending line, the falling portion and the rising portion are bent more tightly than a predetermined bending angle in consideration of spring back. After being processed, it can be bent at a predetermined bending angle.

Since the relief parts 55A and 77A are formed in the pressing dies of the punch die and the die dies so that the work can be bent upward and downward at an acute angle, the work part has sharp edges at the falling and rising parts. A bend is formed.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 10 shows a turret punch press 1 as a punch press machine. The turret punch press 1 is provided with a base 3 that is erected, and side frames 5 and 7 are erected on both sides of the base 3,
Further, an upper frame 9 is provided above the side frames 5 and 7.

On the lower surface of the upper frame 9, a disc-shaped upper turret 13 to which a plurality of punches 11 as upper dies (here, upper dies for molding) are detachably mounted.
Are rotatably supported by the upper rotary shaft 15. On the upper surface of the base 3 facing the upper turret 13, there is a disk-shaped lower turret 19 to which a plurality of lower mold dies 17 forming a pair with the punch 11 are detachably mounted. It is rotatably supported by. On the lower side of the upper frame 9, a ram 25 equipped with a striker 23 for hitting the punch 11 is provided.

Therefore, the upper turret 13 and the lower turret 19 are rotationally controlled in synchronization with each other by a turret servomotor (not shown) mounted in the frame, so that a desired pair of the punch 11 and the die 17 is located directly below the striker 23. Positioning control is selectively performed at a certain processing position.

Further, a fixed table (not shown) is provided at the center of the upper surface of the base 3, and a pair of movable tables 27, the positioning of which is controlled along the Y direction in the figure, are moved on both left and right sides of the fixed table. It is supported freely. The movable table 27 is integrally equipped with a carriage base 29 that extends in the front-rear direction (the direction perpendicular to the paper surface in FIG. 10) while straddling the fixed table.
In addition, a carriage 31 that is movable in the front-rear direction is installed in the carriage base 29. The carriage 31 is equipped with a work clamp 33 that holds one end of a plate-shaped work W so as to be movable in the X direction.

Therefore, when positioning the work W between the upper turret 13 and the lower turret 19, the carriage 31 equipped with the work clamp 33 for gripping one end of the work W moves forward and backward on the carriage base 29 (see FIG. 10). The movement is controlled in the direction (perpendicular to the plane of the drawing) by the carriage base 29 in the Y direction.

The work W positioned in this way
The upper turret 13 and the lower turret 19 are rotationally positioned, and a predetermined punch 11 and a die 17 selected are used for forming.

Next, the molding die 35 will be described with reference to FIGS. 1, 2 and 3. The molding die 35 includes a punch 11 as an upper die and a die 17 as a lower die. The punch 11 and the die 17 are mounted on the upper turret 13 and the lower turret 19, respectively.

The punch 11 is provided with a punch guide 37 which is vertically movable in a mounting hole 13H formed in the upper turret 13, and a flange 39 integrated with the upper portion of the punch guide 37. A lifter spring 41 for constantly urging the punch guide 37 upward is interposed between the punch guide 37 and the upper turret 13. A punch body 43 is provided in the punch guide 37.
The punch head 45 is attached to the upper part of the punch body 43 by a plurality of bolts 47. A stripper spring 49 wound around the outer circumference of the punch body 43 is interposed between the flange 39 and the punch head 45, and the punch body 43 is constantly urged upward.

Below the left half of the punch body 43, a protruding portion 37 protruding inward of the punch guide 37.
T is provided, and the lower surface of the left half of the punch body 43 comes into contact with the protruding portion 37T at the end of the stroke. A notch 51 is formed below the lower surface of the protrusion 37T, and the notch 51 has a pin 53 extending vertically in FIG.
5 is rotatably mounted. The pressing die 55 is constantly urged to the right by the urging force of a spring 57 that is horizontally attached to the lower portion of the punch guide 37 in FIG. As a result, the upper surface of the pressing die 55 has the protrusion 37T.
Is always in contact with the lower surface of the. A gap S1 is formed between the lower surface of the punch guide 37 and the lower surface of the pressing die 55. A gap S2 is formed between the inner tip of the protrusion 37T and the tip surface of the pressing die 55.

A notch 59 is formed in the lower surface of the right half of the punch body 43, and a punch block 63 is provided in the notch 59 by a pin 61 in FIG. There is. This punch block 6
3 is always urged to the right by a pressing pin 67 by the urging force of a spring 65 mounted horizontally in the lower portion of the punch body 43 in FIG. The punch block 6
A downward punch 69 is integrally formed on the lower surface of FIG. 2 on the lower surface of 3, and a hole 71 (a void) is formed on the upper surface. A tilting block 73 is integrated with the inside of the punch guide 37 on the right side in FIG. 1 and an inner side surface is a right slanting surface 73K. This inclined surface 7
A right slanted inclined surface 63K formed outside the lower part of the punch block 63 in FIG. 1 is in contact with 3K. The vicinity of the tip of the downward punch 69 projects in a direction orthogonal to the bending line, that is, in the vertical direction in FIG.

The die 17 is provided with a die holder 75 engaged with the upper surface of the lower turret 19.
A pressing die 77 is engaged on the left side of the upper surface of the die holder 75 in FIG. 1 at a position facing the pressing die 55. A hollow die base 79 is engaged with the lower portion of the die holder 75. This die base 7
A T-shaped raising and lowering member 81 is provided inside 9. A flange 83 is integrated with the lower part of the elevating member 81, and the upper surface of the flange 83 and the die base 7 are integrated.
A spring 85 is wound between the lower surface of 9 and
The elevating member 81 is constantly urged downward.

A notch 87 is formed in the upper surface of the right half of the elevating member 81 in FIG. 1, and a die block 89 is provided in the notch 87 so as to be movable in the left-right direction. An upward punch 91 is integrated on the die block 89. 1, the die block 89 is always urged to the right by the pressing pin 95 by the urging force of a spring 93 mounted horizontally in FIG.

As shown in FIG. 3, the upward punch 91 is provided on the lower die block 89 in FIG. 3, and a hole 97 (a void) is formed on the upper side. A tilting block 99 is integrated with the inside lower part of the die holder 75 on the right side of FIG. A left slanted slanted surface 89K formed outside the upper portion of the die block 89 in FIG. 1 is in contact with this slanted surface 99K. The vicinity of the tip of the upward punch 91 is projected in a direction orthogonal to the bending line, that is, in the vertical direction in FIG.

In FIG. 1, an elevating device 101 for elevating the elevating member 81 is provided on the left side below the elevating member 81. That is, a guide rail 103 is laid on the base 3, and an elevating cylinder 105 that is guided by the guide rail 103 and is movable in the left-right direction in FIG. An elevating table 109 is attached to the tip of the mounted piston rod 107. A moving cylinder 111 for moving the elevating cylinder 105 in the left-right direction is provided on the base 3, and a tip of a piston rod 113 mounted on the moving cylinder 111 has the tip of the elevating cylinder 1.
It is attached to 05.

With the above structure, for example, a work W as shown in FIG. 4 is provided with holes U ₁ , H ₂ , H of U-shape.
Falling part W _A , rising part W _{B in the} place where ₃ is vacant
The operation when processing the forming part of the mold will be described, for example, with reference to FIG.
(A), as shown (B), the between and falling portion W _A and the hole of H ₂ portion of the hole H ₁ and H ₃ in the workpiece W at a lower position of the downward punch 69 is positioned The work W is positioned so that That is, the work W
The tip of the pressing die 55 is positioned at the position of the bending line L ₁ of the above. Then, as shown in FIGS. 6A and 6B, when the punch head 45 of the punch 11 is hit with the hitting element 23, the punch guide 37 moves downward against the biasing force of the lifter spring 41, The work W is clamped by the pressing die 55 and the pressing die 77. When the punch 11 is further lowered, the punch body 43 is lowered against the biasing force of the stripper spring 49, and the inclined surface 6 of the punch block 63 is lowered.
Bending line of the workpiece W the falling part W _A of the workpiece W in the downward punch 69 moves to the left in FIG. 6 against the biasing force of the spring 65 with 3K is lowered along the inclined surface 73K of the inclined block 73 It is lowered and molded along L ₁ . At this time, the tip vicinity of the downward punch 69, a direction perpendicular to the bending line, that is, from being projected in the vertical direction in FIG. 1, falling part W _A
Can be bent more tightly, for example, 90 degrees in consideration of the spring back, and can be bent accurately, for example, 90 degrees after being molded.

Then, as shown in FIGS. 7A and 7B, the work W is placed above the upward punch 91.
It is between and rising portion W _B and the hole of H ₂ portion of the hole H ₁ and H ₃ for positioning the workpiece W to be positioned in. That is, the tip of the pressing die 55 is positioned at the position of the bending line L ₂ of the work W. Then, as shown in FIG.
As shown in (B), the moving cylinder 111 is operated to extend the piston rod 113 to position the lifting cylinder 105 at a position below the flange 83 of the lifting member 81. Then, the lifting cylinder 105 is operated to extend the piston rod 107, and the lifting platform 109 is extended.
Is moved upward. As a result, since the elevating member 81 moves upward, the inclined surface 89K of the die block 89 rises along the inclined surface 99K of the inclination block 99 and resists the biasing force of the spring 93 to the left in FIG. rising portion W _B of the moved workpiece W upwardly punch 91
Is raised along the bending line L ₂ of the work W and is formed. At this time, near the tip of the upward punch 91,
Direction perpendicular to the bending line, that is, from being projected in the vertical direction in FIG. 1, the rising portion W _B is bent tightly than to 90 degrees, for example considering the spring-back after being molded, for example Can be bent accurately at 90 degrees.

As described above, the downward and upward forming processes of the work W can be easily performed alternately, and an accurate upward and downward forming processed product can be obtained.
Further, as shown in FIG. 8 (A), even if the work W has ribs or cuts, the gaps S ₁ and S ₂ are formed on the front surface and the lower surface of the pressing die 55, so that they interfere with each other. It is possible to process without forming.

Further, since the pressing die 55 is provided so as to be rotatable up and down, the upper surface of the pressing die 55 contacts the lower surface of the projecting portion 37T at the time of molding, and the pressing die 77 and the pressing die 77 firmly fix the workpiece W. It can be clamped to.

FIG. 9 shows another embodiment, which is an alternative to that shown in FIG. 9, parts that are the same as the parts shown in FIG. 1 are given the same reference numerals, and overlapping descriptions will be omitted.

In FIG. 9, in the upper front portion of the pressing die 55 and in the lower front portion of the pressing die 77, for example, curved escape portions 55A and 77A are provided so that upward and downward acute bending of the work W, for example, hemming bending can be performed. To form. As a result, for example, as shown in FIG. 9, the falling portion W _A against the workpiece _W, can be allowed to form an acute angle bending the rising part W _B. The angle of this acute bending can be appropriately determined by the pushing amount of the downward punch 69 and the upward punch 77.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes.

[0043]

As can be understood from the above description of the embodiments of the invention, according to the inventions of claims 1 to 11,
It is possible to easily perform the upward and downward forming processes on the workpiece alternately, and to obtain a highly accurate upward and downward forming process product.

Since the work is fixed by the work clamp, when the vicinity of the work clamp is bent, the work is sandwiched between the punch die and the work clamp, and the work cannot be dropped.

At that time, if the pressing die of the punch die is rotatable, it can be easily dropped.

Since the vicinity of the tips of the downward punch and the upward punch is projected in a direction orthogonal to the bending line, the falling portion and the rising portion are bent more tightly than a predetermined bending angle in consideration of spring back. After being formed, it can be bent at a predetermined bending angle accurately.

Since the relief parts 55A and 77A are formed in the pressing dies of the punch die and the die dies so that the work can be bent upward and downward at an acute angle, the work part has sharp edges at the falling and rising portions. A bend can be formed.

[Brief description of drawings]

FIG. 1 is an enlarged front view of a punch and a die for forming processing mounted on a lower turret according to the present invention.

FIG. 2 is a diagram viewed from the direction of arrow II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan view showing an example of a work for performing upward and downward forming processing on the work.

5A and 5B are explanatory views of positioning of a work for performing downward forming processing on the work.

6A and 6B are explanatory views for performing downward forming processing on a work.

7 (A) and 7 (B) are explanatory views of the positioning of the work for performing the upward forming process on the work.

8A and 8B are explanatory views for performing upward forming processing on a work.

FIG. 9 is an enlarged front view of a punch and die for molding according to another embodiment of the present invention.

FIG. 10 is a front view of a turret punch press.

[Explanation of symbols] 1 Turret punch press (punch press machine) 11 punches (upper die, forming die) 13 Upper turret 17 die (lower die) 19 Lower turret 23 Batter 35 Mold for molding 37 Punch guide 37T protrusion 43 punch body 45 punch head 51, 59, 87 Notch 53, 61 pin 55, 77 holding type 55A, 77A escape area 57, 65, 93 springs 63 punch block 67, 95 Push pin 69 downward punch 71, 97 holes 73, 99 Tilt block 73S, 99S inclined surface 75 Die holder 79 die base 81 Lifting member 89 die block 91 Upward punch 101 Lifting device 105 Lifting cylinder 109 lift 111 Moving cylinder

[Procedure amendment]

[Submission date] April 19, 2002 (2002.4.1)
9)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art Heretofore, as a molding die for forming a work, there has been known one as shown in Japanese Patent No. 2545176. That is,
Upward forming processing is performed on the work by the cooperation of the punch ejector mounted on the tip of the punch body and the die chip mounted on the ejector plate.

Claims (11)

[Claims] 1. A method of forming a rising part and a falling part by a punch press for forming a rising part and a falling part by using a punch die and a die mold provided in a punch press. A position corresponding to the downward punch provided in the punch die and the bending die provided in the die die, (B), the downward punch provided in the punch die and the die die (C), the position of processing the rising part of the work to a position corresponding to the pressing die provided in the punch die and the upward punch provided in the die die. A step of positioning, (D), a step of processing the rising portion with a pressing die provided in the punch die and an upward punch provided in the die die, and the work based on the above steps Raised, raised by punch press and performing molding of deactivation, falling processing method. 2. (E), a step of slightly moving a downward punch provided in the punch die toward a pressing die provided in the die die when forming the falling portion of the work, , A step of slightly moving the upward punch provided in the die die toward the pressing die provided in the punch die when forming the rising part of the workpiece, 2. The method of starting and lowering by a punch press according to claim 1, wherein the lowering is performed. 3. A pressing die for forming a rising part of a work in cooperation with a die die and a downward punch for forming a falling part of the work are provided adjacent to each other, and the pressing part is provided. A punching die characterized in that it has a cavity in which the rising portion can freely enter according to the die. 4. The punch die according to claim 3, wherein the downward punch is movably provided in a direction orthogonal to a bending line position. 5. The punching die according to claim 3, wherein the pressing die is vertically rotatable. 6. The punch die according to claim 3, wherein the vicinity of the tip of the downward punch projects in a direction orthogonal to the bending line position. 7. The relief part is formed in the upper part of the pressing die to bend at an acute angle.
The punching die according to 4, 5, or 6. 8. A pressing die for forming a falling part of a work in cooperation with a punch die and an upward punch for forming a rising part of the work are provided adjacent to each other, and the pressing part is provided. A die mold characterized in that it has a space where the falling part can enter freely in correspondence with the mold. 9. The die die according to claim 8, wherein the upward punch is movably provided in a direction orthogonal to a bending line position. 10. The die die according to claim 8, wherein the vicinity of the tip of the upward punch is projected in a direction orthogonal to the bending line position. 11. The die die according to claim 8, wherein a relief portion is formed on an upper portion of the pressing die to perform acute-angle bending.