JP2003334622A - Punch press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a punch press capable of raising a pressurizing force by easily employing a double drive without complicating a mechanism. <P>SOLUTION: The punch press comprises a rotatable threaded member 37 wherein a work clamp device to hold a workpiece movable in the X, Y-axis directions is arranged, and a punch and a die are arranged in the processing positions, and a punch unit 5 is provided above the punch and the punch unit 5 is drawn to the Y-axis direction; a plurality of sliders 49, 51 provided with inclined planes 49K, 51K at the bottom and threaded by the threaded member 37; a punch frame 41 to support the threaded member 37; and a plurality of punch shafts 61A, 61B provided in the bottom frame 41D of the punch frame 41, provided below with strikers 35A, 35B to strike the punch, provided above with roller members 65A, 65B contact-pressed by the inclined planes 49K, 51K of the sliders 49, 51 an energized upward by energizing members 71A, 71B. <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 punch press for punching a work.

[0002]

2. Description of the Related Art In a conventional punch press for punching a work, a mechanism of driving means for hitting the punch with a single striker to perform punching in cooperation with a punch and a die is, for example, a hydraulic cylinder device or Those using a crank mechanism are generally well known. In addition, as known from Japanese Patent Laid-Open No. 2000-343258,
As a mechanical drive mechanism, there is also known a mechanism in which a slider provided with an inclined surface at a lower portion is slid so that the inclined surface moves a striker up and down via a roller member.

[0003]

By the way, among the mechanisms of the driving means in the above-mentioned conventional punch press, performing double drive by using two or more hydraulic cylinder devices or crank mechanisms is costly, mounting and layout. It was very difficult to do. Therefore, I had to do it with a single drive. Further, the means for sliding the slider having the inclined surface in the lower part cannot change the mechanical drive to the double drive simply by changing the stroke of the striker.

The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide a punch press in which a double drive can be performed without complicating the mechanism and the pressing force can be increased. To do.

[0005]

In order to achieve the above object, a punch press of the present invention according to claim 1 is provided with a work clamp device capable of gripping a work and moving in the X-axis and Y-axis directions, and at the working position. A punch and a die are provided, and a punch unit is provided above the punch. The punch unit has a plurality of rotatable screw members extending in the Y-axis direction and a plurality of inclined surfaces screwed to the screw members at the bottom. A slider, and a punch frame for supporting the screw member,
A plurality of striker members provided on the lower frame of the punch frame are provided at the lower portion, roller members contacted and pressed by the inclined surfaces of the sliders are provided at the upper portion, and a plurality of members are urged upward by an urging member. And a punch shaft of.

Therefore, when the screw members are rotated, the plurality of sliders slide and the respective roller members are contacted and pressed by the inclined surface provided at the lower portion, whereby the strikers simultaneously strike the punches to form punches. The work is punched in cooperation with the die.

Thus, the double drive can be performed with a simple mechanism, and a higher pressing force than the conventional one can be applied.

According to a second aspect of the punch press of the present invention, in the punch press according to the first aspect, the screw member is formed by integrating a left screw and a right screw in the longitudinal direction, and The right screw is rotated and a plurality of sliders are operated in synchronization.

Therefore, since the screw member is constituted by integrally integrating the left screw and the right screw in the longitudinal direction, when the left screw and the right screw are rotated, the plurality of sliders are operated in synchronization. As a result, each roller member is contacted and pressed by the inclined surface of each slider, whereby each striker simultaneously strikes the punch, and the punching work is performed on the work in cooperation with the punch and the die.

Thus, a double drive can be made with a simple mechanism, and a higher pressing force than before can be applied.

The punch press of the present invention according to claim 3 is provided with a work clamp device capable of gripping a work and moving in the X-axis and Y-axis directions, a punch and a die at a processing position, and a punch unit above the punch. The punch unit is provided with a plurality of rotatable screw members extending in the Y-axis direction, sliders screwed to the screw members and provided with an inclined surface at the bottom, and a punch frame for supporting the screw members. A striker for hitting the punch, which is provided on the lower frame of the punch frame, has a roller member at the upper part, which is contact-pressed by the inclined surface of each slider, and is urged upward by the urging member. A plurality of punch shafts and a switching means for alternately switching the rotation transmission to each of the screw members. It is.

Therefore, when one of the screw members is rotated by switching the switching means, the roller member is contacted and pressed by the inclined surface of one slider, so that one striker strikes the punch and the punch and the die. The work is punched in cooperation with. When the other screw member is rotated by switching the switching means, the roller member comes into contact with and is pressed by the inclined surface of the other slider, so that the other striker strikes the punch and cooperates with the punch and the die. The work is punched.

Therefore, the optimum pressing ability is selected depending on the plate thickness and the material.

A punch press of the present invention according to claim 4 is the punch press according to claim 2 or 3, characterized in that there is a difference in height between the angles of the inclined surfaces provided under the sliders. .

Therefore, by providing a height difference in the angle of the inclined surface provided at the bottom of each slider, for example, a low pressure high hit rate and a high pressure low hit rate can be selected and used properly.

[0016]

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

Referring to FIGS. 5, 6 and 7, the punch / laser combined processing machine 1 is composed of a laser processing machine 3 and a punch unit 5 in a punch press. A work moving / positioning device 7 for gripping and moving / positioning is provided. Since the laser processing machine 3 and the work moving / positioning device 7 have already known structures, detailed description thereof will be omitted and only the general structure will be described.

In the laser processing machine 3, the laser processing head 9 is of a fixed type, and the C-shaped frame 11 is
A column 15 is provided upright at one end (the left end in FIG. 5) of the lower frame 13, and an upper frame 17 is provided above the column 15. The laser processing head 9 is provided at the tip (center in FIG. 5) of the upper frame 17.

A reflection mirror 19 is provided in the laser processing head 9, and a laser beam LB oscillated by a laser oscillator 21 provided in the upper frame 17 is bent by the reflection mirror 19 and a condenser lens (not shown). The work W is irradiated with the laser light through the above, and the work W is laser-processed. Reference numeral 23 is an oscillator power supply, and reference numeral 25 is a rotatable operation panel.

Frame 1 constituting the laser processing machine 3
The work moving / positioning device 7 is provided on one side (right side in FIGS. 6 and 7) of the work table 27 on the lower frame 13.

More specifically, a carriage 29 is provided which is movable in the X-axis direction (the horizontal direction in FIG. 5, the vertical direction in FIG. 6, and the direction orthogonal to the drawing in FIG. 7).
A plurality of work clamp devices 31 are mounted on the carriage 29. Further, the carriage base 33 provided with the carriage 29 is movable in the Y-axis direction (the horizontal direction in the direction orthogonal to the drawing in FIG. 5, the horizontal direction in FIGS. 6 and 7).

With the above structure, the work clamp device 31 holding the work W can freely move in the X and Y axis directions.
A desired processing position of the work W can be positioned directly below the laser processing head 9.

The punch unit 5 is provided below the laser oscillator 21 in the frame 11 in the vicinity of the laser processing head 9 (on the left side in FIG. 5, upward in FIG. 6), and has different sizes and shapes. And punch P
And a plurality of dies D are opposed to each other (four in this embodiment).
They are arranged in a row in the Y-axis direction. The punch unit 5 provided with a striker 35 for hitting each punch P
Is attached to a ball screw 37 as a screw member,
The ball screw 37 is provided so as to extend in the Y-axis direction, and a servo motor 39 as a drive motor is connected to one end of the ball screw 37.

With the above structure, when the servo motor 39 is driven and the ball screw 37 is rotated, the punch unit 5 moves in the Y-axis direction, is positioned right above the desired punch P, and strikes the punch P with the striker 35. The work W is subjected to punching such as piercing.

The punch unit 5 will be described in more detail.

Referring to FIG. 1, the ball screw 3 is attached to the upper frame 41U of the punch frame 41 having a gate shape.
7 is inserted through a coupling 43, the servo motor 39 is fixed to a bracket 45 provided outside the right frame 41R of the punch frame 41, and an output shaft 47A of the servo motor 39 is connected to the coupling 4.
It is connected to 3.

The ball screw 37 is composed of a left screw 37L and a right screw 37R, and the left half of FIG.
7L, the right half is a right screw 37R, which is integrated in the axial direction. Moreover, the left screw 37L and the right screw 37
The middle part where R and R are integrated is the upper frame 41.
Bracket 4 hung from the center of U
Supported by 7. The left end of the left screw 37L is rotatably supported by the left frame 41L of the punch frame 41.

The left screw 37L and the right screw 37R are provided with sliders 4 having lower inclined surfaces 49K and 51K, respectively.
9 and 51 are screwed together with the sliders 49 and 5
1 is received by slider load receivers 53 and 55 provided in the lower portion of the upper frame 41U.

Lower frame 4 of the punch frame 41
Guide cylinders 59A and 59B constituting punch shaft units 57A and 57B are erected on 1D.
Punch shafts 61A and 61B are mounted in A and 59B so as to be vertically movable. This punch shaft 6
Strikers 35A and 35B of the striker 35 are provided below the 1A and 61B, and the punch shaft 61A and
Roller members 65A and 65B are rotatably mounted on bearings 63A and 63B formed on the upper portion of 61B through pins 67A and 67B, and flange portions 69A and 69B are provided on the upper ends of the punch shafts 61A and 61B. ing.
The punch shaft 61A between the lower surfaces of the flange portions 69A and 69B and the upper surface of the lower frame 41D,
For example, coil springs 71A and 71B as biasing members are always biased in the upward direction and mounted on the exterior of 61B. The roller members 65A and 65B and the slider 4
The inclined surfaces 49K and 51K of 9 and 51 are always in contact with each other. The inclination angles of the inclined surfaces 49K and 51K are the same.

With the above structure, when the servomotor 39 is driven, the ball screw 37 is rotated, for example, in the arrow direction via the output shaft 47A and the coupling 43, so that the left screw 37L and the right screw 37R are screwed together. Slider 4
9 and 51 slide in the Y-axis direction so as to approach each other. As a result, the roller members 65A and 65B are pushed down by the inclined surfaces 49K and 51K provided below the sliders 49 and 51. By pushing down the roller members 65A and 65B, the punch shafts 61A and 61B are lowered against the biasing forces of the coil springs 71A and 71B, and the strikers 35A and 35B provided below the punch shafts 61A and 61B are also lowered. This striker 3
The work P is punched by hitting the punch P with 5A and 35B.

When the servomotor 39 is driven in the reverse direction, the ball screw 37 is rotated in the reverse direction, for example, so that the sliders 49 and 51 screwed into the left screw 37L and the right screw 37R mutually move in the Y-axis direction. Slide in the direction of separating. As a result, the roller members 65A and 65B are formed on the inclined surfaces 49K and 51K provided below the sliders 49 and 51.
Is pushed up by the urging force of the coil springs 71A and 71B via the punch shafts 61A and 61B and returned to its original position.

Thus, the double drive can be performed by a simple mechanism, and the individual punches P can be hit by the strikers 35A and 35B of the double drive. Further, by hitting one punch P with both of the double drive strikers 35A and 35B, both strikers 3
With the sum of the pressing forces of 5A and 35B, it is possible to perform processing with a high pressing force that is stronger than before, and it is possible to obtain press capability.

FIGS. 2 and 3 show another embodiment which is an alternative to FIG. 2 and 3, parts that are the same as the parts shown in FIG. 1 are given the same reference numerals, and redundant description will be omitted.

2 and 3, the left screw 37
The right end of L and the left end of the right screw 37R are not integrated but separated from each other, and the right end of the left screw 37L and the left end of the right screw 37R are rotatably supported by a bearing 73 and also have a right screw. The right end of 37R is the right frame 41R
It is rotatably supported by a bearing 75 provided inside. Gears 77 and 79 are attached to the right end portion of the left screw 37L and the left end portion of the right screw 37R.

A servo motor 83 is fixed to a bracket 81 provided outside the right frame 41R, and a rotary shaft 85 extending in the Y-axis direction is attached to the servo motor 83.
The right ends of are connected. Moreover, the spline shaft 87 is integrated with the left portion of the rotary shaft 85. The spline shaft 87 has an engaging portion 9 provided on the inner circumference of a gear 89.
1 is engaged. As well shown in FIG. 3, the gear 89 has a groove 93 formed in the central portion thereof, and tooth portions 95 and 97 on both sides of the groove 93. The tooth portions 95 and 97 are adapted to mesh with the gears 77 and 79.

As shown in FIG. 4, the groove 93 is provided with a switching means. An engaging portion 99A of an engaging member 99 having a bifurcated fork shape is fitted in the lower part of the switching means. This engaging member 9
A tip of a piston rod 103 attached to a cylinder 101 attached to the lower portion of the upper frame 41U is attached to the reference numeral 9.

The inclined surfaces 49K of the sliders 49 and 51,
Of the 51K, for example, the inclination angle of the inclined surface 49K is smaller than the inclination angle of the inclined surface 51K. That is, the slider 49 is of the high pressure and low hit rate type, and the slider 51 is
Is a low pressure, high hit rate type.

With the above structure, when the cylinder 101 is operated to extend the piston rod 103, for example, the gear 89 moves leftward in FIGS. 2 and 3, and the tooth portion 95 of the gear 89 meshes with the gear 77. . When the servomotor 83 is driven in this state, the rotary shaft 85 is rotated. As a result, the left screw 37L is rotated and the slider 49
Slides to the right, and as described above, the roller member 65B is pushed down by the inclined surface 49K provided on the lower portion of the slider 49. When the roller member 65B is pushed down, the punch shaft 61B moves to the coil spring 7
The striker 35B provided at the lower part of the punch shaft 61B also descends against the urging force of the 1B, and the striker 35B strikes the punch P to punch the work W at a high pressure and a low hit rate. Done.

Further, for example, the cylinder 101 is actuated to contract the piston rod 103 to move the gear 89 to the right in FIGS. 2 and 3, and the tooth portion 97 of the gear 89 is meshed with the gear 79. When the servomotor 83 is driven in this state, the rotary shaft 85 is rotated. As a result, right-hand thread 3
7R is rotated, the slider 49 slides to the left, and as described above, the roller member 65A is pushed down by the inclined surface 51K provided on the lower portion of the slider 51. When the roller member 65A is pushed down, the punch shaft 61A descends against the biasing force of the coil spring 71A, and the striker 35A provided below the punch shaft 61A also descends. The work W is struck and punched on the work W at a low pressure and a high hit rate.

As described above, the high pressure and low hit rate and the low pressure and high hit rate can be selectively used.
The optimum pressing capacity can be selected depending on the material.

As another method of the switching means of FIG. 2, as shown in FIG.
In the above configuration, the structure of each slider screwed to the ball screw is a slider and a nut member, and a clutch or the like for connecting the slider and the nut member is provided. Normally, when the clutch is OFF (the slider and the nut member are not connected), even if the ball screw rotates, the nut member only rotates at that position and the slider does not move.

Conversely, when the clutch of any of the sliders to be driven is turned on (the slider and the nut member are connected), when the ball screw rotates, the slider connected to the nut member by the clutch slides in the Y-axis direction.

Therefore, the clutch of either slider is turned on.
By turning N and OFF, the slider to be driven can be selectively used.

Further, in the mechanism of FIG. 1, by changing the inclined surfaces 49K and 51K of the slider, the high pressure and low hit rate type and the low pressure and high hit rate type can be selectively used as in the structure of FIG.

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

[0046]

As can be understood from the above description of the embodiment of the invention, according to the invention of claim 1, a plurality of sliders are slidably provided on the lower portion by rotating the screw member. Since each roller member is contacted and pressed by the inclined surface, each striker simultaneously strikes the punch and punches the work by the cooperation of the punch and the die.

Thus, the double drive can be performed with a simple mechanism, and a higher pressing force than before can be applied.

According to the invention of claim 2, since the left and right screws are integrated in the longitudinal direction of the screw member, a plurality of screws are rotated when the left and right screws are rotated. When the sliders are operated in synchronization, each roller member is contacted and pressed by the inclined surface of each slider, and each striker simultaneously strikes the punches, and punches work on the work in cooperation with the punch and die. It can be performed.

Thus, the double drive can be performed with a simple mechanism, and a higher pressure can be applied than in the conventional case.

According to the third aspect of the present invention, when one screw member is rotated by switching the switching means, the roller member is contacted and pressed by the inclined surface of one slider, so that one striker causes the punch to move. The work is punched by the cooperation of the punch and die. When the other screw member is rotated by switching the switching means, the roller member comes into contact with and is pressed by the inclined surface of the other slider, so that the other striker strikes the punch and cooperates with the punch and the die. Punching can be performed on the work by moving.

Thus, the optimum pressing ability can be selected depending on the plate thickness and the material.

According to the invention of claim 4, by providing a height difference in the angle of the inclined surface provided under each slider, for example, a low pressure high hit rate and a high pressure low hit rate can be selected and used properly. Can be

[Brief description of drawings]

FIG. 1 is an enlarged view of a punch unit.

FIG. 2 is an enlarged view of another punch unit which replaces FIG.

FIG. 3 is an enlarged front cross-sectional view of an arrow III portion in FIG.

4 is a cross-sectional view taken along line IV-IV in FIG.

FIG. 5 is a side view showing a punch / laser combined processing machine showing an example of a punch press.

FIG. 6 is a plan view of FIG.

FIG. 7 is a front view of FIG.

[Explanation of symbols]

1 Punch / laser combined processing machine 5 Punch unit (punch press) 7 Work movement positioning device 27 work table 29 Carrage 31 Work clamp device 33 Carriage Base 35, 35A, 35B striker 37 ball screw 37L left screw 37R right screw 39 Servo motor (drive motor) 41 punch frame 41U upper frame 41D lower frame 41L left frame 41R Right frame 49, 51 slider 49K, 51K inclined surface 57A, 57B Punch shaft unit 59A, 59B guide tube 61A, 61B Punch shaft 63A, 63B bearing 65A, 65B roller member 67A, 67B pin 69A, 69B Flange part 71A, 71B Coil spring (biasing member)

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3C024 BB04 BB06                 4E048 JA04                 4E090 AA10 AB01 BA02 BB04 CC04                       CC10 HA04

Claims (4)

[Claims] 1. A work clamp device capable of gripping a work and moving in the X-axis and Y-axis directions is provided, a punch and a die are provided at a processing position, and a punch unit is provided above the punch. A rotatable screw member extending in the axial direction, a plurality of sliders screwed to the screw member and provided with an inclined surface at a lower portion, a punch frame for supporting the screw members, and a lower frame of the punch frame are provided. A plurality of punch shafts each having a striker for hitting the punch at a lower portion thereof, a roller member at the upper portion contacted and pressed by the inclined surface of each slider, and a plurality of punch shafts biased upward by a biasing member; A punch press that is characterized by 2. The screw member is configured by integrally integrating a left screw and a right screw in the longitudinal direction, and the left screw and the right screw are rotated to operate a plurality of sliders in synchronization. The punch press according to claim 1, wherein: 3. A work clamp device capable of gripping a work and moving in the X-axis and Y-axis directions is provided, a punch and a die are provided at a processing position, and a punch unit is provided above the punch. A plurality of rotatable screw members extending in the axial direction, a slider screwed to each screw member and provided with an inclined surface at the bottom, a punch frame for supporting the screw members, and a lower frame of the punch frame. A plurality of punch shafts provided at the lower part of the striker for striking the punch, and provided at the upper part with a roller member contacted and pressed by the inclined surface of each slider, and a plurality of punch shafts biased upward by a biasing member; A punch press comprising: a switching unit that alternately switches rotation transmission to a screw member. 4. The angle difference between the inclined surfaces provided on the lower portion of each slider is high and low.
Punch press as described.