JP2000218326A - Turret punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turret punch press which can separately hold and elevate dies arranged in two rows in a turret diameter direction. SOLUTION: When a punching processing is carried out with a co-working of punches P1, P2 mounted in two rows in an upper turret diameter direction and dies D1, D2 mounted in two rows in a bottom turret 13 diameter direction, only the dies D1, D2 to be used for a processing by being allocated at processing points are upheld to a pass line PL by a die elevation means 27. Then, spacers 61, 71 are inserted into a bottom side of the dies D1. D2 being thus upheld by a spacer insertion means 67 so as to support the dies D1, D2 in a manner that they do not descend.

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 having two rows of punches and dies in a turret radial direction.

[0002]

2. Description of the Related Art Conventionally, in a turret punch press controlled by an NC apparatus, when setting a large number of dies on a turret, two small dies are arranged side by side in the radial direction of the turret. ing.

In such a turret punch press, the back surface of the work may be scratched by being rubbed against the upper surface of the die. In order to avoid such a case, the upper surface of the die is placed on the lower turret at a position lower than the pass line. It is common to provide a die lifting function that lifts only the die indexed to the ram position for setting and punching to the pass line.

[0004]

However, according to such a conventional technique, when two dies are arranged in the radial direction of the turret, both dies are lifted up to the pass line, and the side which is not used. There is a problem that the back surface of the work is scratched by the die.

SUMMARY OF THE INVENTION An object of the present invention is to provide a turret punch press capable of separately holding and vertically moving dies arranged in two rows in the radial direction of the turret. Is to provide.

[0006]

In order to achieve the above object, a turret punch press according to the present invention comprises:
A punch mounted in two rows in the radial direction of the upper turret and a die mounted in two rows in the radial direction of the lower turret are indexed to the processing positions, punches and dies are selected, and the punch selected by the striker is hit and punching is performed. A turret punch press, wherein a die holder is provided below the two rows of dies so that only the dies to be used among the two rows of dies which are always located below the pass line in the die holder are individually pushed up to the pass line. Means, a spacer inserted below the die to support the die pushed up by the die elevating means, and spacer inserting means for inserting the spacer below the die. It is a feature.

Therefore, when punching is performed in cooperation with the punches mounted in two rows in the radial direction of the upper turret and the dies mounted in two rows in the radial direction of the lower turret, the punching is performed at the processing position. Is lifted to the pass line by the die lifting / lowering means, and a spacer is inserted under the lifted die by the spacer insertion means to support the die so that it does not lower during processing.

[0008] A turret punch press according to a second aspect of the present invention is the turret punch press according to the first aspect,
The die lifting means is a lifting cylinder provided below the die via a support member thinner than the outer shape of the two rows of dies.

Therefore, of the two rows of dies indexed to the processing position, the die is used by a lifting cylinder provided below the die used for processing via a support member smaller than the outer shape of the die. Lift only the die to be run to the pass line.

According to a third aspect of the present invention, in the turret punch press according to the first or second aspect, the die in which the spacer is mounted inside a lower turret of the two rows of dies is the die. A first spacer that is inserted into and supported by the support member provided below the inner die only when pushed up by the lifting / lowering means, and is mounted on the outer side of the lower turret of the two rows of dies. A second spacer that is inserted into and supported by the support member provided below the outer die only when the die that has been pushed up by the die lifting means,
It is characterized by comprising.

Therefore, when the die inside the lower turret among the dies indexed at the processing position and provided in two rows in the radial direction of the lower turret is used for processing, only the inner die is moved by the die elevating means. The first spacer is inserted into and supported by a supporting member provided below the supporting member. Also, when using the die outside the lower turret for processing,
Only the outer die is lifted, and the second spacer is inserted into and supported by a supporting member provided below the outer die.

A turret punch press according to a fourth aspect of the present invention is the turret punch press according to the third aspect,
The first spacer is always biased outward between the inner die and the outer die in the die holder accommodating the two rows of dies, but the lower side of the inner die without interfering with the outer die. The second spacer is capable of fitting to a support member provided below the outer die, and is provided by the spacer insertion means. It is slidably provided on a spacer outer frame provided so as to be able to approach and separate from the outside of the lower turret, and is normally urged in the lower turret direction.The spacer outer frame is attached to the die holder by the spacer insertion means. When inserted, the first spacer is pressed into the inside of the lower turret.

Therefore, when the die inside the lower turret is used, only the inner die is raised, and when the spacer outer frame is inserted into the die holder by the spacer inserting means, the space between the inner die and the outer die is lost. The first spacer movably provided is pushed by the outer frame of the spacer and fitted to the support member provided below the inner die. At this time, the second spacer movably provided on the spacer outer frame is pressed against the descending outer die,
Move inside the spacer outer frame. On the other hand, when using the outer die of the lower turret, only the outer die is raised. When the outer frame of the spacer is inserted into the die holder by the spacer inserting means, the outer die is provided movably on the outer frame of the spacer and is always in the forward direction. Is fitted to a support member provided below the outer die. At this time, since the inner die is descending, the spacer outer frame contacts the inner die and does not move any further.

[0014]

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

FIG. 4 shows the entire turret punch press 1 according to the present invention. In the turret punch press 1, a gap G is provided at the center of the main body frame 3.
have. On the upper frame 5 above the gap G, an upper turret 7 on which a plurality of punches P are mounted is rotatably supported by a rotating shaft 9.

A lower turret 13 on which a plurality of dies D are mounted is rotatably supported by a rotating shaft 15 on a lower frame 11 below the gap G. Although not shown, the upper turret 7 and the lower turret 13 are rotatable and indexable in synchronization with a rotary indexing mechanism.

The upper frame 5 includes an upper and lower cylinder 1.
The ram 21 is attached to the lower end of the piston rod 19. Below the ram 21, a striker 23 for performing a punching process by hitting a punch P indexed to a processing position is provided movably in the left-right direction in FIG.

The upper frame 5 has an upper turret 7
Of the punch P _1, P ₂ which are arranged in the radial direction, actually the striker 23 for striking the only punch P (e.g. punch P ₂₎ to be used for punching in FIG horizontal direction in A striker shift cylinder 25 to be moved is provided.

On the other hand, in the processing position in the lower frame 11, the lower frame 11 below the die D indexed to perform the punching in cooperation with the punch P described above.
Is provided with a die elevating means 27 for lifting the dies D ₁ and D ₂ provided side by side in the radial direction of the lower turret 13.

On the right side of the upper and lower turrets 7 and 13 of the gap G in FIG. 4, there is provided a work positioning device 29 for moving and positioning a work W as a work material to a processing position.

The work positioning device 29 has a fixed table 31 and a working table 33 composed of a movable table (not shown). The carriage moves in the Y-axis direction integrally with the movable table across the fixed table 31. A base 35 is provided so as to be movable and positioned in the Y-axis direction. The carriage base 35 includes a Y-axis ball screw 4 rotatably supported by a Y-axis motor 37 and a bearing 39.
It is moved and positioned by one rotation.

An X-axis carriage 45 having a clamper 43 for clamping the work W is mounted on the carriage base 35 by an X-axis moving mechanism (not shown) in the X-axis direction (a direction perpendicular to the plane of FIG. 4). ) Is provided so that it can be moved and positioned freely.

With the above configuration, the work W clamped by the clamper 43 is moved to a desired position by moving and positioning the carriage base 35 in the Y-axis direction and moving and positioning the X-axis carriage 45 in the X-axis direction. Position. On the other hand, the upper and lower turrets 7 and 13 are rotated in synchronism, and the punches P ₁ and P ₂ used for punching are used.
The dies D, D ₁ , and D ₂ are indexed to machining positions, and the striker 23 strikes the punch P with the vertical cylinder 17, thereby performing punching at a desired position on the workpiece W.

FIGS. 1A and 1B show the die elevating means 27 described above. In this die lifting / lowering means 27,
As an example of die lifting means for raising only the die D ₁ or D ₂ actually used below the two rows of dies D ₁ and D ₂ mounted on the die holder 47 of the lower turret 13, for example, for raising and lowering The cylinders 49A and 49B are separately provided.

Die holder 4 containing dies D ₁ and D ₂
7 is attached to the lower turret 13 with bolts 51, and dies D ₁ and D ₂ are pipes 53 as an example of a support member.
A and 53B are mounted on upper flanges 55A and 55B. The pipes 53A and 53B are vertically movable through the lower turret 13 and are normally urged downward by a spring 57, and are respectively raised and lowered by the above-described lifting cylinders 49A and 49B. .

Slits 59 are provided horizontally on both sides of the side surface 47A inside the die holder 47. The flanges 55A and 55B of the pipes 53A and 53B are usually at the height of the slit 59. Between the die D ₁ and the outer die D ₂ inner in the slit 59, moves first spacer 61 of the forked which can include a body portion of the pipe 53A inward in the radial direction of the lower turret 13 It is provided freely.

The first spacer 61 is movable within a range that does not interfere with the outer die D _2, and is normally urged outward (to the right in FIG. 1) by the spring 63 to interfere with the inner die D _1. Not to be.

Outside the lower turret 13, the die holder 4
7 are located at positions corresponding to the slits 59 of the spacer outer frame 6.
5 is provided movably. This spacer outer frame 65
Is attached to the spacer insertion cylinder 67,
The die holder 4 is operated by the action of the spacer insertion cylinder 67.
7 can be freely inserted into the slit 59.

The spacer outer frame 65 has two forks 69. The fork 69 has a fork shape between the forks 69 and has a shape such that the body of the pipes 53A and 53B can be included inside. The second spacer 71 is provided movably. The second spacer 71 is normally urged by a spring 73 toward the distal end of the spacer outer frame 65 (to the left in FIG. 1B).

With the above configuration, for example, the inner punch P ₁
And when performing punching using a die D ₁ is, referring to FIGS. 2 (A) and 2 (B), to lift the pipes 53A raises the die D ₁ to the pass line by the inner lifting cylinder 49A The spacer outer frame 65 is moved forward (lower turret 13) by the spacer insertion cylinder 67.
Direction) and inserted into the slit 59.

At this time, since the outer die D ₂ has not risen, the flange 55B remains in the slit 59, the second spacer 71 stops against the flange 55B, and only the spacer outer frame 65 advances forward. . And
This spacer outer frame 65 contacts the first spacer 61A,
Extruded the first spacer 61 forward fitting the body of the lower flange 55A of the elevated pipe 53A under the die D _1.

[0032] Accordingly, the pipe 53A will not be lowered, the striker 23 is supported under the pressure of the die D ₁ of the case struck a punch P _1.

On the other hand, when punching is performed using the outer punch P ₂ and the die D ₂ , as shown in FIGS. 3A and 3B, the pipe 53B is lifted by the outer lifting cylinder 49B. Then, the die D ₂ is raised to the pass line, and the spacer outer frame 65 is pushed forward (toward the lower turret 13) by the spacer insertion cylinder 67 and inserted into the slit 59 of the die holder 47.

[0034] At this time, the pipe 53A is the body part of the inner die D ₁ below since no rise not appear in the slit 59 position, barrel slit 59 located outside the die D ₂ under the pipe 53B Has appeared in

The second spacer 71 has a spring 73
Pipe 53 Second spacer 71 because it is located in front of the spacer outer frame 65 is elevated in the outer die D ₂ under the
A is fitted into the trunk below the flange 55B of A, and the spacer outer frame 65 contacts the rear surface 61A of the first spacer 61.
The first spacer 61 is stopped can not move in contact with the flange 55A of the inner die D ₁ under the pipe 53A.

[0036] Accordingly, the pipe 53B can no longer falling, the striker 23 is supported under the pressure of the die D ₂ when struck punch P _2.

[0037] From the above results, it is possible to separately select and lifting Even if each die D _1, D ₂ having two dies D _1, D ₂ in the radial direction in the lower turret 13, also working The selected die D can be supported against the pressure at the time. Thereby, it is possible to prevent the die D not used for processing from being raised and damaging the back surface of the work W.

Since two tracks can be provided in the upper and lower turrets 7 and 13 in the radial direction, the number of layouts can be increased.

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.

[0040]

As described above, the turret punch press according to the first aspect of the present invention cooperates with the punches mounted in two rows in the radial direction of the upper turret and the dies mounted in two rows in the radial direction of the lower turret. When performing punching work, only the die indexed to the processing position and used for processing is lifted up to the pass line by the die lifting / lowering means, and the spacer is inserted by spacer insertion means under the lifted die. Since the die is supported so as not to be lowered, the die can be used by being arranged in two rows in the lower turret. Thereby, the number of dies to be mounted can be increased.

In the turret punch press according to the second aspect of the present invention, of the two rows of dies indexed to the processing position, the lifting cylinder provided below the die used for processing is used to reduce the outer shape of the die. Since only the die to be used is lifted up to the pass line via the thin support member, the unused die is located below the pass line, thereby preventing the back surface of the work from being damaged.

In the turret punch press according to the third aspect of the present invention, the turret punch press is indexed to the processing position, and is positioned radially of the lower turret.
When using the die inside the lower turret among the dies provided in a row for processing, only the inner die is lifted by the die lifting / lowering means, and the first spacer is attached to the support member provided thereunder. Insert and support. When the outer die of the lower turret is used for processing, only the outer die is lifted, and the second spacer is inserted into the supporting member provided thereunder and supported, so that two rows are provided. Die can be used selectively.

In the turret punch press according to the fourth aspect of the present invention, when the inner die of the lower turret is used, only the inner die is raised, and when the spacer outer frame is inserted into the die holder by the spacer inserting means, Since the first spacer movably provided between the inner die and the outer die is pushed by the spacer outer frame and fits on the support member provided below the inner die, the The inner die can be supported against pressure. On the other hand, when using the outer die of the lower turret, only the outer die is raised. When the outer frame of the spacer is inserted into the die holder by the spacer inserting means, the outer die is provided movably on the outer frame of the spacer and is always in the forward direction. The second spacer biased to the outer die fits into the support member provided below the outer die, so that the outer die can be supported against the pressure during processing.

[Brief description of the drawings]

FIGS. 1A and 1B are enlarged sectional views of a main part of a turret punch press according to the present invention.

FIGS. 2A and 2B are cross-sectional views showing a state where a first spacer is inserted below a die when an inner die is used.

FIGS. 3A and 3B are cross-sectional views showing a state in which a second spacer is inserted below a die when an outer die is used.

FIG. 4 is a front view showing the entire turret punch press according to the present invention.

[Explanation of symbols]

Reference Signs List 1 turret punch press 7 upper turret 15 lower turret 23 striker 47 die holder 49A, 49B lifting cylinder (die lifting means) 53A, 53B pipe (supporting member) 61 first spacer (spacer) 67 spacer insertion cylinder (spacer inserting means) 71 second spacer (spacer) P _1, P ₂ punch D _1, D ₂ die PL pass line

Claims (4)

[Claims] 1. A punch mounted in two rows in a radial direction of an upper turret and a die mounted in two rows in a radial direction of a lower turret are indexed to a processing position, a punch and a die are selected, and a punch selected by a striker is selected. A turret punch press for performing a punching process by hitting, wherein only a die to be used is pushed out of the two rows of dies, which are always positioned below the pass line in the die holder, to the pass line alone under the two rows of dies. Die elevating means provided, a spacer inserted below the die to support the die pushed up by the die elevating means, and spacer insertion means for inserting the spacer below the die, A turret punch press, comprising: 2. The die raising / lowering means according to claim 1, wherein said die lifting / lowering means is a lifting / lowering cylinder provided below each of said dies via a support member thinner than the outer shape of said two rows of dies. Turret punch press. 3. The spacer is provided below the inner die only when the die mounted inside the lower turret of the two rows of die is pushed up by the die lifting / lowering means. A first spacer inserted into and supported by the support member, and a lower side of the outer die only when the die mounted on the outer side of the lower turret of the two rows of die is pushed up by the die elevating means. And a second spacer that is inserted into and supported by the support member provided in the first member.
The turret punch press described. 4. The first spacer is always urged outward between an inner die and an outer die in a die holder accommodating the two rows of dies, but the first spacer does not interfere with the outer die. The second spacer is fittable to a support member provided below the outer die, and the second spacer is fittable to a support member provided below the die. The spacer insertion means is slidably provided on a spacer outer frame provided so as to be able to approach and separate from the outside of the lower turret, and is normally urged in the lower turret direction. The turret punch press according to claim 3, wherein the first spacer is pushed into the lower turret when the first spacer is inserted into the die holder by insertion means.