JP2001113324A - Turret punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turret punch press capable of easily and surely discharging slug without moving a forming cylinder in punching and forming. SOLUTION: In forming, a punch P for desired working and a die FD for forming are indexed to a working position R, by rotating upper/lower turrets 9, 11, a forming piston 59 arranged below the lower turret 11 at the working position R is lifted up by up/down moving means 79A, 79B, the forming die FD is pushed up through a pressure receiving plate 45 elevatably arranged to the rear face of the lower turret 11, forming is conducted. Further, in punching, punching is conducted b the punch P and the punching die PD indexed at the working position R, a slug S is discharged from a slug discharge hole 61 arranged at the center of the forming piston 59.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret punch press capable of selectively performing punching and forming.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 6 and 7, in forming by a turret punch press 101, a punch mounted on an upper turret 105 by a ram 103 and indexed to a processing position. While hitting P, the forming tip 109 of the forming die FD attached to the lower turret 107 and indexed to the processing position is generally moved up and down by the forming cylinder 113 positioned at the processing position by the set cylinder 111. It is.

[0003] In such a turret punch press 101, the height of the forming die FD can be the same as the height of the other punching dies, so that the feed clearance FC can be used effectively. Therefore, referring to FIG. 8, the forming die F is located above the pass line PL.
It is possible to prevent the back surface of the product or the like from being damaged or the waist from breaking, as in the case where the D-shaped chip 109 protrudes.

[0004]

However, in such a conventional technique, as shown in FIG.
The position of the forming cylinder 113 is at the standby position when performing punching (indicated by a solid line in FIG. 7), and must be at the processing position directly below the ram 103 when performing forming (see FIG. 7). (Shown by a two-dot chain line). For this reason,
The forming cylinder 113 must move between the position below the ram 103 and the standby position, and there is a problem that the machining tact is slowed down.

[0005] Further, since the forming cylinder 113 is located below the lower turret 107 even when it is at the standby position, the scraps clogged in the punching die come off due to the vibration at the time of punching, and fall below the lower turret 107. drop down. As a result, scraps may collect on the upper surface of the forming cylinder 113 at the standby position. Therefore, it is necessary to provide a device such as a scraper for preventing scraps and an air blow device so that the scraps do not collect on the forming cylinder 113. There is a problem that the mechanism is complicated. Further, since 100% of the scrap removal cannot be removed, it is necessary to check at the time of starting inspection, which is troublesome.

SUMMARY OF THE INVENTION An object of the present invention has been made in view of the above-mentioned problems of the prior art, and it is not necessary to move a forming cylinder at the time of punching and forming, and it is easy to remove a scrap. Another object of the present invention is to provide a turret punch press capable of reliably and reliably discharging.

[0007]

In order to achieve the above object, a turret punch press according to the present invention comprises:
A turret punch press for punching or forming by punching a punch mounted on an upper turret and a die for punching or a die for forming mounted on a lower turret at a processing position. A forming piston which is vertically movable below the lower turret at a position and has a hole for discharging scraps in the center, a vertical moving means for vertically moving the forming piston, and a vertically movable surface on the lower surface of the lower turret And a pressure receiving plate which is pushed up by the molding piston and pushes up the molding die.

Therefore, when performing the forming process, the upper and lower turrets are rotated, and a punch for performing a desired process and a forming die are indexed to the working position, and are provided below the lower turret at the working position. The forming piston is lifted by a vertical moving means, and a forming die is pushed up through a pressure receiving plate provided on the lower surface of the lower turret so as to be vertically movable to perform the forming process. On the other hand, when performing punching, punching is performed using a punch indexed to the processing position and a die for punching, and the punching waste is discharged from a punching waste discharging hole provided at the center of the forming piston. Is done.

A turret punch press according to a second aspect of the present invention is the turret punch press according to the first aspect,
An up-down moving means rotatably provided at a position below the lower turret in the processing position, a driven gear having a gear portion on an outer periphery and a cam having a desired height on an upper surface, and rotating the driven gear; A servomotor provided with a gear, a bearing provided to be able to move up and down with respect to the cam of the driven gear so as to move the forming piston up and down, and a bearing retainer for rotatably holding the bearing at a fixed position. , Is provided.

Therefore, when the servomotor rotates the driven gear via the gear, the bearing provided on the driven gear is rotated at a fixed position by the bearing retainer, so that the bearing is provided on the upper surface of the driven gear. A bearing rides on the cam, and the forming piston is pushed up by the bearing to perform the forming process.

A turret punch press according to a third aspect of the present invention is the turret punch press according to the second aspect,
A disk member having a gear portion on an outer peripheral portion and being rotated by the servomotor and having a cam of a desired height on an upper surface, between the driven gear and the forming piston, and a cam of the disk member being lifted up. Bearings that can be set down freely,
One or two or more bearing retainers for rotatably holding the bearings at fixed positions are further provided.

Therefore, when the servo motor rotates the disk member via the gear, the bearing provided on the disk member is rotated at a fixed position by the bearing retainer, so that the bearing is provided on the upper surface of the disk member. A bearing rides on the cam, and the molding piston is further pushed up by the bearing to perform the forming process.

A turret punch press according to a fourth aspect of the present invention is the turret punch press according to the second or third aspect, wherein the bearing is a ball bearing.

Therefore, the ball bearing is rotated at a fixed position by the bearing retainer provided on the driven gear and the disk member, and the forming piston is pushed up to perform the forming process.

According to a fifth aspect of the present invention, there is provided a turret punch press according to the second or third aspect, wherein the bearing is a roller bearing.

Therefore, the roller bearing is rotated at a fixed position by the bearing retainer provided on the driven gear and the disk member, and the forming piston is pushed up to perform the forming process.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 2 and 3 show the entire hydraulic turret punch press 1 according to the present invention. In the turret punch press 1, a gap G is provided between the upper frame 5 and the lower frame 7 at the center of the frame 3. In this gap G, the upper frame 5
And a lower turret 11 rotatably supported by the lower frame 7.

A plurality of punches P are mounted on the upper turret 9, and a punch die PD and a forming die FD are mounted on the lower turret 11 as a plurality of dies D. The upper turret 9 and the lower turret 11 are rotated synchronously, and a punch P and a die D for performing a desired processing are determined at the processing position R.

A ram 15 having a striker 13 for hitting the punch P is provided above and below the machining position R so as to be able to move up and down. Is provided.

On the other hand, a machining table 17 for supporting a workpiece W to be machined is provided on the right side of the lower turret 11 in FIG. The processing table 17 has a fixed table 19 at the center, and a movable table 21 which can move in the Y-axis direction on both left and right sides (upper and lower sides in FIG. 3) of the fixed table 19.

A carriage base 23 for connecting the left and right movable tables 21 across the fixed table 19 is provided so as to be reciprocally movable in the Y-axis direction. The carriage base 23 can be moved and positioned in the Y-axis direction by a Y-axis motor 25.

The carriage base 23 is provided with a plurality of work clampers 27 for holding the work W,
It has a carriage 31 that can be moved and positioned in the X-axis direction by an X-axis motor 29.

With the above structure, the upper turret 9 and the lower turret 11 are rotated, and the punch P and the die D for performing desired processing are indexed to the processing position R. Next, the work W is gripped by the work clamper 27, the carriage 31 and the carriage base 23 are moved, and the desired position of the work W is positioned at the processing position R. Then, the ram 15 is lowered by the driving device 16 and the work W is punched by the cooperation of the punch P and the die D.

FIG. 1A shows the lower turret 11 at the processing position R and the structure thereunder. The lower turret 11 has a molded tip 33 that can move up and down in the center.
Is exchangeably mounted via a die holder 35. The shaping tip 33 integrally has a shank 37 protruding downward.
The flange portion 39 provided at the lower end of 7 is constantly urged downward by a spring 41. Therefore, the molded chip 3
3 is always sunk below the pass line PL.

In the forming station in which the forming die FD is mounted on the lower turret 11, a notch 43 is provided on the lower surface of the lower turret 11, and the pressure receiving plate 45 is urged downward by a spring 47 from the notch 43. It is hung in a state of being.

The central portion of the pressure receiving plate 45 has a pressing portion 49 projecting upward, and a flange portion 51 provided at an upper end of the pressing portion 49 is provided with a lower turret 11.
Is locked by the locking portion 53 so as not to descend below a predetermined position.

The shank 37 urged downwardly
The lower surface of the flange portion 39 and the upper surface of the flange portion 51 of the pressing portion 49 are not in contact with each other with a predetermined gap during processing. Further, the pressure receiving plate 45 can be immersed in the notch 43 on the lower surface of the lower turret 11 described above.

On the other hand, the lower turret 11 and the lower frame 7
Is provided between them. In the forming apparatus 55, a forming piston 59 is provided vertically below the pressure receiving plate 45 and directly above a hole 57 for dropping the scrap S generated during the cutting. At the center of the forming piston 59, a hole 61 for dropping the scrap S is provided.

A piston flange 63 is provided on the upper part of the molded piston 59.
A bearing receiving portion 65 is attached to a lower surface of the device by bolts 67.

A cylindrical driven gear 69 is provided outside the molding piston 59, and the driven gear 69 is rotatably supported by the lower frame 7 via a thrust bearing 71. At the center of the driven gear 69, a disk-shaped gear portion 73 is provided so as to protrude outward, and a rack is formed on the outer peripheral surface of the gear portion 73.

Further, a bearing holder 75A fixed to the lower frame 7 and not rotating is provided on the gear portion 73, and the bearing 77A is rotatably supported at a fixed position by the bearing holder 75A. I have. Further, as shown in FIG. 1B, a cam 79A on which the bearing 77A rides is provided on the upper surface of the gear portion 73 by a height d.

Outside the driven gear 69 and the gear portion 73
On the upper side, a disk member 81 having a rack formed on the outer peripheral surface is rotatably provided. A bearing holder 75B fixed to the frame and not rotating is provided above the disk member 81 and between the bearing receiving portion 65 and the bearing holder 75A, similarly to the bearing holder 75A. Bearing 77 by 75B
B is rotatably supported at a fixed position. Further, as shown in FIG.
The cam 79 having the same height d as the above-mentioned cam 79A is provided on the upper surface of the cam 79A.
B is provided.

A servo motor 83 is provided near the forming piston 59, and a pinion gear 87 rotatably supported by the lower frame 7 via a bearing 85 is connected to the servo motor 83. The pinion gear 87 has a gear portion 7 of the driven gear 69 described above.
3 and the disk member 81 are engaged. In addition, a bellows 89 for protecting the cut waste is attached so as to cover the whole of the molded piston 59 from above.

Next, the forming operation will be described. First, the upper and lower turrets 9 and 11 are rotated to position the forming station of the lower turret 11 at the processing position R.
Next, the pinion gear 87 is rotated by the servomotor 83, and the driven gear 69 and the disk member 81 are rotationally driven. At this time, since the bearings 77A and 77B are rotated at fixed positions by the bearing retainers 75A and 75B and ride on the cams 79A and 79B, the disk member 81 and the bearing receiving portion 65 are raised, and the molded piston 59 is moved.
Is lifted up by a height of 2 · d. Then, the piston flange 63 is attached to the pressure receiving plate 4.
5 is pushed up, and the pressure receiving plate 45 raises the forming tip 33 via the shank 37 to perform the forming process.

In the case of punching, the upper and lower turrets 9 and 11 are rotated to index a punch P for punching and a punching die PD to a processing position. I do. The scrap S generated at this time is
It is dropped and discharged from a hole 61 provided at the center of the molding piston 59.

From the above results, since the forming apparatus 55 is provided to be moved up and down by the cams 79A and 79B,
The vertical dimension can be reduced, and the forming apparatus 55 can be provided below the lower turret 11 at the processing position. The molding device 55 can be easily removed at the time of maintenance.

Further, since a hole 61 for dropping scraps is provided at the center of the forming apparatus 55, there is no need to provide an air blow or a scraper for discharging scraps, so that it is economical. Furthermore, since the punching process can be performed without retracting the forming device 55 during the punching process,
Processing tact can be hastened.

The forming apparatus 55 includes a servo motor 8
3 rotates the cams 79A and 79B to
Since it is moved up and down by 7A and 77B, the top dead center position of the molding height can be easily adjusted.

It should be noted that the present invention is not limited to the above-described embodiment of the present invention, but by making appropriate changes.
It can be implemented in other aspects. That is, in the embodiment of the present invention described above, the cams 79A and 79B are rotated by the servo motor 83 to move up and down, but in addition to the cams 79A and 79B, a ball screw, a ball spline, a trapezoidal screw, or the like is used. You can also.

The same operation and effect can be obtained by using a hollow hydraulic cylinder instead of the servo motor 83.

FIGS. 4 and 5 show a case where the present invention is applied to another type of forming die FD ′, FD ″. In such a case, the shank 37 and the pressure receiving plate 45
Since the distance between them is long, the molded chip 33 is pushed up by using the pressure transmitting members 91 and 93 between the shank 37 and the pressure receiving plate 45.

[0043]

As described above, in the turret punch press according to the first aspect of the present invention, when performing the forming process, the upper and lower turrets are rotated to perform a desired process and a punch for forming. Index the die to the processing position,
The forming piston provided below the lower turret at the processing position is lifted by a vertical moving means, and a forming die is pushed up via a pressure receiving plate provided movably up and down on the lower surface of the lower turret to perform the forming process. It can be carried out. On the other hand, even when performing punching, punching is performed by the punch and punching die indexed at the processing position, and the punching waste can be discharged from the punching hole discharge hole provided at the center of the forming piston. In addition, it is not necessary to move the forming piston to the retracted position unlike the related art, and the machining tact can be shortened. Further, the scrap can be easily discharged without providing an air blow, a scraper, or the like for discharging the scrap as in the related art.

In the turret punch press according to the second aspect of the present invention, when the servo motor rotates the driven gear via the gear, the bearing provided on the driven gear is rotated at a fixed position by the bearing retainer. Since it rides on the cam provided on the upper surface of the driven gear and pushes up the forming piston by this bearing to perform the forming process, the height dimension of the vertical moving means can be reduced, and it can be installed below the lower frame. it can.

In the turret punch press according to the third aspect of the present invention, when the servo motor rotates the disk member via the gear, the bearing provided on the disk member is rotated at a fixed position by the bearing retainer. The bearing rides on the cam provided on the upper surface of the disc member, and the bearing further pushes up the forming piston to perform the forming process, so that the amount of vertical movement can be increased.

In the turret punch press according to the fourth aspect of the present invention, the ball bearing rotates at a fixed position and rides on the cam by the bearing retainer provided on the driven gear and the disk member. Molding can be performed.

In the turret punch press according to the fifth aspect of the present invention, the roller bearing rotates at a fixed position and rides on the cam by the bearing retainer provided on the driven gear and the disk member. , Can be formed.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view showing a turret punch press forming apparatus according to the present invention, and FIG. 1B is a front view as viewed from a direction B in FIG. 1A.

FIG. 2 is a front view of the turret punch press according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a cross-sectional view when applied to another type of forming die.

FIG. 5 is a cross-sectional view when applied to still another type of forming die.

FIG. 6 is a cross-sectional view showing a conventional turret punch press forming apparatus.

FIG. 7 is a perspective view showing a moving state of a forming cylinder.

FIG. 8 is a cross-sectional view showing a state where a molded tip is projected.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 turret punch press 9 upper turret 11 lower turret 45 pressure-receiving plate 59 formed piston 61 hole for removing scraps 69 driven gear 75A, 75B bearing retainer 77A, 77B ball bearing (bearing) 79A, 79B cam (vertical moving means) 81 Disc member 83 Servomotor P Punch PD Punching die FD Molding die R Processing position S Punching waste

Claims (5)

[Claims] 1. A turret punch press for punching or forming by punching a punch mounted on an upper turret and a punching die or a forming die mounted on a lower turret at a processing position. A forming piston movably provided vertically below the lower turret at the processing position and having a hole for removing scraps at the center thereof; a vertical moving means for moving the forming piston up and down; and A turret punch press, comprising: a pressure receiving plate provided on a lower surface so as to be vertically movable and pushed up by the molding piston to push up the molding die. 2. The driven gear, wherein the up and down moving means is rotatably provided at a position below the lower turret in the processing position, has a gear portion on an outer periphery, and has a cam of a desired height on an upper surface; A servo motor having a gear for rotating a driven gear, a bearing provided to be able to move up and down with respect to the cam of the driven gear to move the forming piston up and down, and to hold the bearing rotatably at a fixed position. The turret punch press according to claim 1, further comprising: 3. A disk member having a gear portion on an outer peripheral portion between the driven gear and the forming piston, rotated by the servomotor, and having a cam of a desired height on an upper surface, and the disk. 3. The apparatus according to claim 2, further comprising one or two or more bearings provided so as to freely move up and down the cams of the members and bearing holders for rotatably holding the bearings at fixed positions. The turret punch press described. 4. The turret punch press according to claim 2, wherein the bearing is a ball bearing. 5. The turret punch press according to claim 2, wherein the bearing is a roller bearing.