JPH11290969A - Turret punch press and method for using this turret punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make contact between a sheet material and a lower die releasable at the time of turning a lower turret and to prevent the generation of flaws on the rear surface of the sheet material by flocking a brush for supporting the sheet material on the center part of the lower turret and making a free ball bearing for the turret appear or disappear against its position in height. SOLUTION: A brush plate 63 for a table flocked with a brush B on the upper surface of a lower turret 15 is provided and through its through hole 73, a free ball bearing 71 for the table is made to be capable of appearing or disappearing. At the time of working a sheet material by this press, first, the plural free ball bearings 43 for the turret are made to project in the direction of height of the brush B, the sheet material W supported by a work clamper 29 is lifted and the state of being in contact with a lower die 13 is released. Next, an upper turret 11 and the lower turret 15 are turned and after a working range is deduced, the free ball bearing 43 for the turret is shifted downward to bring the sheet material W into contact with the lower die 13. A process to carry out working through positioning of the XY directions with a carriage 31 under this situation is repeated.

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 for performing punching, forming, and the like on a sheet material, and a method of using the turret punch press.

[0002]

2. Description of the Related Art A conventional turret punch press will be briefly described as follows.

[0003] The turret punch press is based on a bridge-type main body frame, and the main body frame has an upper frame and a lower frame vertically opposed to each other. At the front of the upper frame, an upper turret with multiple upper molds is provided rotatably on the peripheral edge, and at the front of the lower frame, a lower turret with multiple lower molds is peripherally rotated. It is possible and provided to face the upper turret vertically. Here, the upper turret and the lower turret are rotated so that a predetermined upper die and a predetermined lower die can be indexed into a processing area. Above the upper turret, there is provided a striker for pressing a predetermined upper die, which has been indexed into the processing area, from above.

[0004] A work table for supporting a plate material is provided on the rear side of the lower turret in the lower frame, and a plurality of free ball bearings are mounted on the upper surface of the work table. In addition, to position the plate at a predetermined position between the upper turret and the lower turret, a carriage with a work clamper that clamps the end of the plate can be moved in the x-axis direction and the y-axis direction behind the lower turret It is provided in.

[0005] Therefore, the upper turret and the lower turret are rotated to index a predetermined upper die and a predetermined lower die into a processing area. The carriage is moved in the x-axis direction and in the y-axis direction while the end of the plate is clamped by the work clamper.
By moving in the axial direction, the plate is positioned at a predetermined position between the upper turret and the lower turret. And
By pressing a predetermined upper die from above with a striker, a predetermined upper die and a predetermined lower die can cooperate to perform a punching process or a forming process on a plate material.

[0006]

However, when the lower turret is rotated when the plate is located between the upper turret and the lower turret, the plate and the plurality of lower dies are in contact with each other. There is a problem that the back surface of the plate material is scratched.

[0007] Further, even if a downward molding process is performed on a plate material by cooperation of a predetermined upper die and a predetermined lower die, when the plate material is carried out of the work table, the downward molding portion of the plate material is not removed. Since it interferes with the inside of the mold hole of the predetermined lower mold, there is a problem that it is extremely difficult to carry out the plate material to the outside of the work table without damaging the downward molding part.

Accordingly, the first object of the present invention is to prevent the back surface of the plate material from being damaged by the rotation of the lower turret even when the plate material is located between the upper turret and the lower turret. It is a second object of the present invention to easily carry out the plate material to the outside of the table without damaging the downward molded portion when the downward molding is performed on the plate material.

[0009]

According to the first aspect of the present invention, an upper turret having a plurality of upper dies is provided rotatably on a peripheral portion, and a plurality of lower dies is provided on a peripheral portion. The lower turret is rotatable and provided vertically above and below the upper turret, and the upper turret and the lower turret are rotated so that a predetermined upper die and a predetermined lower die can be indexed into a processing region, and the processing region is formed. Provided is a striker that presses a predetermined upper mold that has been indexed upward from above, and a carriage provided with a work clamper that clamps an end of the plate to position the plate at a predetermined position between the upper turret and the lower turret. In a turret punch press provided so as to be movable in the x-axis direction and the y-axis direction, a large number of brushes for supporting a plate material are planted at the center of the lower turret, and Fitted with a free ball bearings for multiple turret central portion, and characterized by being configured to retractably vertically the free ball bearings for a plurality of turrets against plate support height position of the brush.

According to the first aspect of the present invention,
The plate material clamped by the work clamper is lifted up by the plurality of turret free ball bearings by moving the plurality of turret free ball bearings upwardly projecting with respect to the plate supporting height position of the brush, and the plate material and the plurality of turret free ball bearings are lifted. Release the contact state of the lower mold. Next, the upper turret and the lower turret are rotated to index a predetermined upper die and a predetermined lower die into a processing area. Then, the plurality of turret free ball bearings are moved downward so as to be immersed with respect to the plate material supporting height position of the brush, whereby the plate material is lowered to contact the plurality of lower molds.

After the plurality of turret free ball bearings are immersed in the brush supporting height of the plate,
The carriage is moved in the x-axis direction and the y-axis direction to position the plate at a predetermined position between the upper turret and the lower turret. Then, a predetermined upper mold is pressed from above by a striker, and punching or forming is performed on the plate material by cooperation of the predetermined upper mold and lower mold.

The positioning of the plate material may be performed before the plurality of turret free ball bearings are projected from the plate material supporting height position of the brush.

According to the second aspect of the present invention, in addition to the first aspect of the present invention, the lower turret includes:
A lower turret base having a concave portion in the center, a turret brush plate provided in the center of the lower turret base and having a large number of brushes implanted on the upper surface, and a through hole formed in the turret brush plate. A plurality of free ball bearings for the turret that can vertically protrude and retract with respect to the plate material support height position of the upper brush, and a turret actuator for moving the plurality of free ball bearings for the turret vertically so as to protrude and retract. It is characterized by becoming.

According to the second aspect of the present invention,
The same operation as the operation according to the first aspect of the present invention is achieved.

According to a third aspect of the present invention, (i) a plurality of the turret free ball bearings are projected upward with respect to the support height position of the brush, so that the turret free ball bearings are clamped by the work clamper. Lifting the plate material, and releasing the contact state between the plate material and the plurality of lower molds, and (ii) after the step (i) is completed, rotating the upper turret and the lower turret to a predetermined position. And (iii) after completion of the step (ii), lowering the plurality of turret free ball bearings with respect to the brush support height position. And (iv) after the step (iii), the predetermined upper mold is pressed by the striker to complete the predetermined process. By cooperating with the upper die and the predetermined lower mold, characterized by comprising a step of performing processing with respect to the positioned plate member at a predetermined position between the upper turret and the lower turret.

According to a fourth aspect of the present invention, in addition to the features specified in the first or second aspect of the present invention, a work table for supporting a plate material is provided, and a large number of brushes are planted on the work table. The work table is equipped with multiple free ball bearings for the table,
A plurality of table free ball bearings are configured to be able to protrude and retract in the vertical direction with respect to the plate material supporting height position of the brush.

According to the fourth aspect of the present invention,
In addition to the functions according to the first or second aspect of the present invention, a plurality of turrets are formed after a downward forming process is performed on a plate material by cooperation of a predetermined upper die and a predetermined lower die. By projecting the free ball bearing and the plurality of free ball bearings for the table with respect to the plate supporting height of the brush, the plate clamped by the work clamper is lifted, and the downward molded portion formed on the plate is lowered to a predetermined lower portion. Remove from the mold hole of the mold. Then, the plate material is carried out of the table by moving the carriage.

When the thickness of the plate material to be supported is small, the plurality of free ball bearings for the turret and the plurality of free ball bearings for the table are immersed downward with respect to the plate material supporting height position of the brush. Thus, the plate member can be supported by a large number of brushes. When the thickness of the plate material to be supported is large, the plurality of turret free ball bearings and the plurality of free ball bearings for the table are projected upward with respect to the plate material supporting height position of the brush. Thus, the plate can be supported by the plurality of free ball bearings.

According to a fifth aspect of the present invention, in addition to the features of the fourth aspect of the present invention, a plurality of the table ball bearings and a plurality of the turret free ball bearings are mounted on the plate material supporting height of the brush. When it is made to protrude upward with respect to the vertical position, a moving space is formed on one side in the x-axis direction of the processing area, through which a downward molded part molded into a plate material can pass. And

According to the fifth aspect of the present invention,
In addition to the operation according to the fourth aspect of the present invention, when a plurality of free ball bearings for table and a plurality of free ball bearings for turret are projected upward with respect to the plate material supporting height position of the brush, a processing area is obtained. Is formed on one side in the x-axis direction through which the downwardly formed portion of the plate material can pass. Then, by moving the carriage to one side in the x-axis direction, the downward molding portion can carry out the plate material to the outside of the table through the moving space.

According to the sixth aspect of the present invention, in addition to the features specified in the fourth or fifth aspect, the work table is provided on a table base and provided on the table base and provided on the upper surface. A table brush plate on which a large number of brushes are implanted, and a plurality of free balls for table which can be raised and lowered with respect to the plate material supporting height position of the brush via through holes formed in the table brush plate. It is characterized by comprising a bearing and a table actuator for vertically moving a plurality of table free ball bearings.

According to the invention specifying matter of claim 6,
The same operation as the operation according to the fourth aspect of the present invention is achieved.

In the invention according to claim 7, (i) after performing a downward forming process on a plate material by a predetermined upper die in cooperation with a predetermined lower die, a plurality of turrets are formed. By causing the free ball bearing and the plurality of free ball bearings for a table to protrude upward with respect to the supporting height position of the brush, the plate material clamped by the work clamper is lifted, and the downward molding formed on the plate material is performed. And (ii) after the step (i) is completed, by moving the carriage to discharge the plate material to the outside of the work table. It is characterized by comprising.

[0024]

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

Referring to FIGS. 1 and 6, a turret punch press 1 according to an embodiment of the present invention is based on a bridge-type main body frame 3.
Has an upper frame 5 and a lower frame 7 facing vertically (front and back in FIG. 1 and up and down in FIG. 6). An upper turret 11 having a plurality of upper dies 9 is rotatably provided on a front portion (left portion in FIGS. 1 and 6) of the upper frame 5, and a peripheral portion is provided on a front portion of the lower frame 7. A lower turret 15 having a plurality of lower molds 13 is rotatable and provided to face the upper turret 11 vertically. Here, the center of rotation 15S of the lower turret 15 is eccentric with respect to the center of rotation 11S of the upper turret 11, and the outer diameter of the lower turret 15 is larger than the outer diameter of the upper turret 11.
By rotating the lower turret 15 and the upper mold 9
Further, a predetermined lower mold 13 can be indexed into the processing area A. Above the upper turret 11, a striker 17 for pressing a predetermined upper die 9 indexed to the processing area A from above is provided.
It is moved vertically by the operation of a hydraulic cylinder 19 provided on the upper frame 5.

Lower turret 15 in lower frame 7
A fixed work table 21 extending in the y-axis direction (front-rear direction) is provided on the rear side of the fixed work table 21 on the lower frame 7 (up and down in FIG. 1, up and down in FIG. On both sides, a pair of movable worktables 23 and 25 are provided movably in the y-axis direction. A carriage base 27 extending in the x-axis direction (left and right directions) is integrally connected to the rear portions of the pair of movable work tables 23 and 25.
7 is provided with a carriage 31 having a plurality of work clampers 29 for clamping an end of the plate material W so as to be movable in the x-axis direction.

A pair of movable worktables 23, 25
Without extending the fixed work table 21 in the x-axis direction and the y-axis direction.
May be configured to be movable in the y-axis direction along a guide rail provided on the upper frame 5. Further, the movable work tables 23 and 25 are preferably provided with a large number of brushes for supporting the plate material W, so that the upper turret 11 and the lower turret 15 are rotated so that the predetermined upper mold 9 and the predetermined upper mold 9 are rotated. Is indexed into the processing area A. Further, the carriage 31 is moved in the x-axis direction with respect to the carriage base 27 while the ends of the plate material W are clamped by the plurality of work clampers 29, and the carriage 31 is integrally formed with the carriage base 27. The plate material W is positioned at a predetermined position between the upper turret 11 and the lower turret 15 by moving in the y-axis direction. Then, a predetermined upper mold 9 is pressed from above by a striker 17, thereby causing the predetermined upper mold 9 and the predetermined lower mold 13 to cooperate with each other to punch or form the plate material W. I do. By repeating the above operation, a series of processing can be performed on the plate material W.

The lower turret 15 will be described in detail with reference to FIG.

That is, the lower turret 15 is based on a lower turret base 35 having a concave portion 33, and the concave portion 33 of the lower turret base 35 has a plurality of turret brush plates 37 having a large number of brushes B implanted on an upper surface thereof. It is provided via a column. A bearing support plate 39 is provided below the turret brush plate 37 (the lower side in FIG. 2) via a guide member 41 so as to be vertically movable.
On the upper surface of the turret are a plurality of free ball bearings 4
3 is attached. Here, the bearing support plate 3
9 is moved in the vertical direction, so that the plurality of turret free ball bearings 43 are attached to the lower turret base 3.
The brush B protrudes and retracts vertically through a through hole 45 formed in the plate 5 with respect to a plate material supporting height position of the brush B. In order to move the bearing support plate 39 up and down, a plurality of turret air cylinders 49 having a vertically movable piston rod 47 are provided in the recess 33 of the lower turret base 35, and a turret air cylinder 49 is provided. The piston rod 47 of the air cylinder 49 is integrally connected to the bearing support plate 39.

Instead of providing the turret free ball bearing 43 on the bearing support plate 39, a configuration as shown in FIG. 3 may be used. That is, a holder guide 51 is provided in each through hole 45, and a bearing holder 53 for holding the turret free ball bearing 43 is provided in each holder guide 51 so as to be movable in the vertical direction (vertical direction in FIG. 3). is there. Holder guide 51
A spring 55 capable of urging the bearing holder 53 downward is provided between an upper part of the bearing holder 53 and a lower part of the bearing holder 53, and a retaining ring 57 for preventing the bearing holder 53 from being detached is provided below the holder guide 51. It is. Further, a push-up plate 59 is integrally connected to the piston rods 47 of the plurality of turret air cylinders 49, and the push-up plates 59 push up the corresponding bearing holders 53 from below (see FIG. (Only one is shown).

The fixed work table 21 will be described in detail as follows.

That is, referring to FIGS. 1 and 4, a table brush plate 63 having a large number of brushes B on its upper surface is provided near a lower turret 15 in the lower frame 7 via a plurality of columns. . A plurality of table air cylinders 67 each having a piston rod 65 that can move in a vertical direction (front and back directions toward the paper surface in FIG. 1 and vertical directions in FIG. 4) are provided on a lower surface of the table brush plate 63 via a bracket 69. A free ball bearing for table 71 is provided at the tip of the piston rod 65 in each table air cylinder 67. Here, the table air cylinder 67
By moving the piston rod 65 in the vertical direction, the free ball bearing 71 for the table protrudes and retracts vertically with respect to the plate material supporting height position of the brush B through the through hole 73 formed in the brush plate 63 for the table. It is configured to do so.

Referring to FIGS. 1 and 5, the lower frame 7
A cover plate 75 is provided on the rear side (the right side in FIG. 1 and the front side in FIG. 5 of FIG. 5) of the table brush plate 63 via a plurality of columns, and the lower side of the cover plate 75 (FIG. In FIG. 5, a plurality of bearing support members 77 extending in the x-axis direction are provided at appropriate intervals in the y-axis direction (on the back side with respect to the paper surface, the lower side in FIG. 5). A plurality of table free ball bearings 79 are provided on each bearing support member 77 at appropriate intervals in the x-axis direction. The table free ball bearings 79 protrude from the upper surface of the cover plate 75 through the through holes 81. In addition, the height position above the free ball bearing 79 for the table is the same as the plate material support height position of the brush B. In order to avoid interference between the work clamper 29 and the free ball bearing 79 for the table, when the work clamper 29 approaches the vertical upper region of the bearing support member 77 by using a known means, the bearing support member 77 is moved downward. The plurality of free ball bearings 79 for the table are moved so as to be immersed downward with respect to the lower position of the work clamper 29.

Here, when the plurality of free ball bearings 71 for the table and the plurality of free ball bearings 43 for the turret are projected upward with respect to the plate material supporting height position of the brush B, the right side of the processing area A ( A moving space R (see FIGS. 9 and 1) through which the downward forming portion Wa formed on the plate material W can pass is formed on one side in the x-axis direction).

Next, first and second methods of using the turret punch press 1 will be described.

The first method of using the turret punch press includes the following steps.

(I) Step The piston rods 47 are moved upward by the operation of the plurality of turret air cylinders 49 to move the plurality of turret free ball bearings 43 upward with respect to the plate material supporting height position of the brush B. To protrude. As a result, FIG.
As shown in (2), the plate material W clamped by the work clamper 29 by the plurality of turret free ball bearings 43 is lifted, and the contact state between the plate material W and the plurality of lower molds 13 is released.

(Ii) Step (i) After the step is completed, the upper turret 11 and the lower turret 15 are rotated to index the predetermined upper die 9 and the predetermined lower die 13 into the processing area A.

Step (iii) After the step (ii) is completed, the plurality of turret free ball bearings 43 of the brush B are It is immersed in a downward direction with respect to the plate material support height position. Thereby, as shown in FIG. 8, the plate material W is lowered and brought into contact with the plurality of lower molds 13. Then, the carriage 31 is moved in the x-axis direction and the y-axis direction, and the plate material W is positioned at a predetermined position between the upper turret 11 and the lower turret 15. The positioning of the plate material W may be performed before the plurality of turret free ball bearings 43 project from the brush B at the plate material supporting height position.

(Iv) Step After the above (iii) step is completed, the predetermined upper mold 9 is pressed from above by the striker 17, whereby the cooperation between the predetermined upper mold 9 and the predetermined lower mold 13 is performed. By working
A punching process, a forming process, or the like can be performed on the plate material W. The second method of using the turret punch press 1 is as follows.
It comprises the following steps.

(I) Process After the downward molding of the plate material W by the cooperation of the predetermined upper mold 9 and the predetermined lower mold 13, the piston rod 47 is operated by the operation of the plurality of turret air cylinders 49. Is moved upward to cause the plurality of turret free ball bearings 43 to protrude with respect to the plate support height of the brush B, and the plurality of table air cylinders 67 to move the piston rod 65 upward. This causes the plurality of free ball bearings 71 for the table to protrude upward with respect to the plate supporting height position of the brush B. As a result, as shown in FIG. 9, the plate material W clamped by the work clamper 29 by the plurality of turret free ball bearings 43 and the plurality of table free ball bearings 71 is lifted, and the downwardly formed portion formed on the plate material W is lifted. Wa is set to a predetermined lower mold 13.
And a moving space R through which the downwardly formed portion Wa of the plate material W can pass is formed on the right side of the processing area A.

(Ii) Step After the above (i) step is completed, the carriage 31 is moved to one side (right side) in the x-axis direction, so that the plate material W
The downward forming part Wa passes through the moving space R, and the plate material W is carried out to the outside of the work tables 21 and 25.

As described above, according to the first embodiment of the present invention, the plate material W is made up of the upper turret 11 and the lower turret 15.
, The plate material W is lifted by the plurality of turret free ball bearings 43,
Since the contact state between the plate material W and the plurality of lower molds 13 can be released, the back surface of the plate material W is not damaged by the rotation of the lower turret 15.

Further, after performing downward forming on the plate material W, a plurality of turret free ball bearings 43 are formed.
Further, the plate material W is lifted by the plurality of free ball bearings 71 for a table, and the downward molding portion Wa of the plate material W can be released from the mold hole 13h of the predetermined lower mold 13, so that the plate material W is When the sheet material W is carried out to the outside of the mold 25, the downward molded portion Wa of the plate material W does not interfere with the inside of the mold hole of the predetermined lower mold 13. Accordingly, the plate material W
Can be easily carried out of the work tables 21 and 25. In particular, when the plurality of turret free ball bearings 43 and the plurality of table free ball bearings 71 are projected upward with respect to the plate material supporting height position of the brush B, the downward forming portion Wa is formed on the right side of the processing area A.
Is formed, so that the downward molded portion Wa can be further prevented from being damaged, and the above effect can be further improved.

A turret punch press 83 according to the second embodiment of the present invention will be briefly described with reference to FIGS. It should be noted that most of the configuration of the turret punch press 83 is the same as that of the turret punch press 1 according to the first embodiment of the present invention, and only different portions from the configuration of the turret punch press 1 will be described.

On the rear side of the table brush plate 63 in the lower frame 7 (on the right side in FIG. 10, on the front side in FIG. 11), there are provided a plurality of table brush plates 85 having a large number of brushes B implanted on the upper surface. It is provided via a support. A plurality of bearing support members 87 extending in the x-axis direction are provided at appropriate intervals in the y-axis direction below the table brush plate 85 (the back side as viewed in the drawing in FIG. 10 and the lower side in FIG. 11). A plurality of table free ball bearings 89 are provided on each bearing support member 87 at appropriate intervals in the x-axis direction.
Here, by moving each bearing support member 87 in the vertical direction, the corresponding plurality of free ball bearings 89 for the table are supported through the through holes 91 formed in the brush plate 85 for the table by the plate material supporting height of the brush B. It is configured so that it can appear and disappear in the vertical direction with respect to the position.
In order to move each bearing support member 87 in the vertical direction, a plurality of table air cylinders 95 are provided below each bearing support member 87 in the lower frame.

Here, the table brush plate 85 is provided with a plurality of guide rods 97 for supporting the bearing support member 87 movably in the vertical direction. Each guide rod 97 is provided with a piston in the table air cylinder 95. A spring 99 is provided which can urge the bearing support member 87 upward with respect to the rod 93. Also, when the work clamper 29 approaches the vertical upper region of the bearing support member 87 using known means, the bearing support member 87 is moved downward with respect to the piston rod 93 while resisting the urging force of the spring. The plurality of free ball bearings 89 for the table are immersed in a downward direction with respect to the lower position of the work clamper 29 lower than the plate material supporting height position of the brush B.

The method of using the turret punch press 83 according to the second embodiment of the present invention is similar to the first and second methods of using the turret punch press 1 according to the first embodiment of the present invention. In addition to the above, the following usage method can also be used.

That is, when the thickness of the plate material W to be supported is small, a plurality of turret free ball bearings 43 and a plurality of table free ball bearings 7 are provided.
1 is immersed in a downward direction with respect to the plate material supporting height position of the brush B, and a plurality of table supporting cylinders 87 are moved downward by the operation of a plurality of table air cylinders 95, so that a plurality of table free members are moved. The ball bearing 89 is immersed in a downward direction with respect to the plate supporting height position of the brush B. Thus, the plate material W can be supported by the numerous brushes B.

When the plate material W to be supported is thick, a plurality of turret free ball bearings 43 are required.
In addition to projecting the plurality of table free ball bearings 71 upward with respect to the plate material support height position of the brush B, the plurality of table support cylinders 87 are moved upward by the operation of the plurality of table air cylinders 95. Let me
A plurality of table free ball bearings 89 are projected upward with respect to the plate supporting height of the brush B. As a result, the plate material W is transferred to the plurality of free ball bearings 4.
3, 71, 89.

According to the second embodiment, in addition to the same effects as those of the first embodiment, the following effects are obtained.

That is, when the thickness of the plate material W to be supported is small, the plate material W can be supported by a large number of brushes B, so that the plate material W can be moved while maintaining the plate material W at a constant height position. Therefore, it is possible to reduce noise caused by the movement of the plate material W and to reduce scratches caused by the movement of the plate material W. When the thickness of the plate material W to be supported is large, a plurality of free ball bearings 4
3, 71, 89 can support the plate material W.
Can be kept at a constant height position. Therefore, the plate material W
It is possible to perform high-precision processing while maintaining the plate material W at a constant height while minimizing noise due to the movement of the plate material and reducing scratches due to the movement of the plate material W.

The free ball bearings 43, 7
It is desirable that the balls in 1, 79 and 89 be made of an elastic material such as urethane.

[0054]

According to the invention as set forth in any one of claims 1 to 3, even when the plate is located between the upper turret and the lower turret, a plurality of plates are provided. Since the plate material can be lifted by the turret free ball bearing and the contact state between the plate material and the plurality of lower molds can be released, the back surface of the plate material is not damaged by the rotation of the lower turret.

According to the invention set forth in any one of claims 4 to 7, a downward molding process is performed on a plate material by cooperation of a predetermined upper die and a predetermined lower die. After that, the plate material is lifted by the plurality of free ball bearings for the table and the plurality of free ball bearings for the turret, and the downward molded portion of the plate material can be released from the mold hole of the predetermined lower mold. When the sheet is carried out, the downwardly formed portion of the plate does not interfere with the inside of the mold hole of the predetermined lower mold. Therefore, the plate member can be easily carried out to the outside of the work table while preventing the downward molded portion from being damaged as much as possible. In particular, in the invention according to claim 5 or claim 6, the plurality of free ball bearings for table and the plurality of free ball bearings for turret are projected upward with respect to the plate material supporting height position of the brush. Since a moving space through which the downward molded portion can pass is formed on one side in the x-axis direction of the processing region, it is possible to further prevent the downward molded portion from being damaged, and to further improve the above-described effect. it can.

According to the invention described in any one of claims 4 to 7, when the plate to be supported is thin, the plate can be supported by a large number of brushes. Therefore, it is possible to reduce the noise due to the movement of the plate and the damage due to the movement of the plate while maintaining the plate at a constant height position. Further, when the thickness of the plate material to be supported is large, the plate material can be supported by the plurality of free ball bearings for the turret and the plurality of free ball bearings for the table, so that the plate material is maintained at a fixed height position. be able to. Therefore, it is possible to perform high-precision processing while keeping the plate material at a fixed height position while minimizing noise due to the movement of the plate material and reducing scratches due to the movement of the plate material.

[Brief description of the drawings]

FIG. 1 is a diagram along a line II in FIG. 6;

FIG. 2 is a view taken along line II-II in FIG.

FIG. 3 is a view showing another mounting mode of the free ball bearing.

FIG. 4 is a view along the line IV-IV in FIG. 1;

FIG. 5 is a view along the line VV in FIG. 1;

FIG. 6 is a side view of the turret punch press.

FIG. 7 is an operation explanatory view.

FIG. 8 is an operation explanatory view.

FIG. 9 is an operation explanatory view.

FIG. 10 is a view showing a main part of a turret punch press according to the embodiment of the second invention.

FIG. 11 is a diagram along the line XI-XI in FIG. 10;

[Explanation of symbols]

 Reference Signs List 1 turret punch press 9 upper mold 11 upper turret 13 lower mold 15 lower turret 17 striker 21 fixed work table 29 work clamper 31 carriage 43 free ball bearing for turret 71 free ball bearing for table

Claims (7)

[Claims] 1. An upper turret provided with a plurality of upper dies at a peripheral portion thereof is rotatably provided, and a lower turret provided with a plurality of lower dies at a peripheral portion thereof is provided rotatably and vertically opposed to the upper turret. A striker configured to index a predetermined upper die and a predetermined lower die into a processing area by rotating the upper turret and the lower turret, and to press the predetermined upper die indexed into the processing area from above. A turret punch provided with a carriage having a work clamper for clamping an end of the plate material in the x-axis direction and the y-axis direction in order to position the plate material at a predetermined position between the upper turret and the lower turret. In the press, a large number of brushes for supporting a plate material are implanted in the center of the lower turret, and a plurality of turret free ball bearings are installed in the center of the lower turret. Mounting and turret punch press, characterized by comprising configured to be retractable in the vertical direction a plurality of turrets for the free ball bearings against plate support height position of the brush. 2. The lower turret includes a lower turret base having a concave portion at a central portion, a turret brush plate provided at a central portion of the lower turret base, and having a large number of brushes implanted on an upper surface thereof. Multiple turret free ball bearings that can extend and retract in the vertical direction with respect to the plate support height of the upper brush through the through holes formed in the brush plate, and the vertical direction in which multiple turret free ball bearings extend and retract The turret punch press according to claim 1, further comprising a turret actuator for moving the turret to the turret. 3. A plate material clamped by said work clamper is lifted by projecting a plurality of said turret free ball bearings upward with respect to a supporting height position of said brush, so that said plate material and said plurality of free ball bearings are lifted. (Ii) after the step (i), the upper turret and the lower turret are rotated to remove a predetermined upper mold and a predetermined lower mold. The step of indexing into the processing area, and (iii) after the step (ii) is completed, lowering the plate material by immersing a plurality of turret free ball bearings downward with respect to the brush supporting height position. (Iv) after the step (iii), the predetermined upper mold and the predetermined lower mold are pressed by pressing the predetermined upper mold with the striker. The By, the use of a turret punch press of claim 1, characterized by comprising a step of performing processing with respect to the positioned plate member at a predetermined position between the upper turret and the lower turret. 4. A work table for supporting a plate material is provided,
A large number of brushes are implanted on the work table, and a plurality of free ball bearings for the table are mounted on the work table, and the plurality of free ball bearings for the table are moved up and down with respect to the plate supporting height of the brush. 2. The apparatus according to claim 1, wherein the apparatus is configured to be able to appear and disappear in a direction.
Or the turret punch press according to claim 2. 5. When the plurality of table ball bearings and the plurality of turret free ball bearings are projected upward with respect to the plate material supporting height of the brush, the plurality of table ball bearings and one of the turret free ball bearings are located on one side in the x-axis direction of the processing area. The turret punch press according to claim 4, wherein a moving space through which a downwardly formed portion formed on the plate material can pass is formed. 6. The work table includes a table base, a table brush plate provided on the table base and having a large number of brushes implanted on an upper surface thereof, and a through hole formed in the table brush plate. A plurality of free ball bearings for a table that can vertically move up and down with respect to the plate material supporting height position of the brush, and a table actuator that moves the plurality of free ball bearings for a table up and down so as to protrude and retract. The turret punch press according to claim 4 or 5, wherein: 7. (i) After performing a downward forming process on a plate material by cooperating a predetermined upper mold with a predetermined lower mold,
By projecting the plurality of turret free ball bearings and the plurality of table free ball bearings upward with respect to the support height position of the brush, the plate material clamped by the work clamper is lifted, and A step of releasing the formed downward molded part from the mold hole of the predetermined lower mold; and (ii) after the step (i) is completed, moving the carriage to move the plate material to the outside of the work table. 5. The method for using a turret punch press according to claim 4, comprising a step of discharging.