JPH0732066A - Turret punch press - Google Patents

Abstract

PURPOSE:To obtain the optional bending height regardless of a feed clear in upper and lower turrets, to enable bending work to a complicate shaped material and to enable continuous bending having only a little deformation and flaw in a work. CONSTITUTION:This turret punch press executes the punching to the work by cooperating a punch metallic mold fitted in the suitable interval on the circumference of the upper turret 13 being freely rotated and a die metallic mold fitted to a position corresponding to the punch metallic mold on the circumference of the lower turret 11 being freely rotated A work holder device 27 being vertically movable, providing a work holding member 41 which holds the work with the outside of the lower turret 11, is fitted onto the circumference of the upper turret 13. Further, a bending die 45 is arranged at the outside of the lower turret 11 in the working position, and a bending punch 47 being vertically movable to a die hole in this bending die 45 is provided.

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, and more particularly to a turret punch press capable of performing bending such as cutting and raising.

[0002]

2. Description of the Related Art Conventionally, when performing a bending process such as a cut-and-raising process with a turret punch press, the bending process is performed by a rotatable upper and lower turret and an upper and lower bending die. It is being appreciated.

[0003]

By the way, when the work is bent by the above-mentioned conventional turret punch press, the work is performed by the upper and lower bending dies incorporated in the upper and lower turrets. There was a limit to the bending height (rise amount) due to the feed clear dimension (gap between the upper and lower turrets). In addition, the structure of the upper and lower bending dies is complicated and the processing shape is limited.

Further, since the contact area between the work holder and the work at the work holding portion is small, there is a problem that the work holding force is weak and the work is easily displaced. Since the punching process and the pass line are different from normal punching, the work is easily scratched. Although the area occupied by the bending dies in the upper and lower turrets is large, the area to be machined is small and there is the problem of poor efficiency.

The object of the present invention is to improve the above-mentioned problems by obtaining an arbitrary bending height irrespective of the feed clear of the upper and lower turrets and performing a bending work of a complicated shape. The object of the present invention is to provide a turret punch press capable of continuous bending with little deformation and scratches.

[0006]

In order to achieve the above object, the present invention relates to a punch die mounted on the circumference of a rotatable upper turret at appropriate intervals, and a circle of a rotatable lower turret. A punch press that punches a work by cooperating with a die die mounted at a position corresponding to the punch die on the circumference, and the work is placed on the circumference of the upper turret outside the lower turret. A vertically movable work holder device equipped with a work pressing member to be pressed is installed, a bending die is arranged outside the lower turret at the processing position, and a vertically movable bending punch is provided in the die hole of this bending die. A turret punch press.

[0007]

By adopting the turret punch press of the present invention, the work is advanced into the lower turret and placed on the bending die. By rotating the upper turret, the work holder device is indexed and positioned at the processing position. Next, when the work holder device descends to press the work with the work holding member and then the bending punch is raised, the work is bent by the cooperation of the bending punch and the bending die.

[0008]

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

Referring to FIG. 9, the turret punch press 1 is provided with a gate-shaped frame 3, and the frame 3 has side frames 7 standing on the lower base 5 and the lower base 5, and side frames 7. And an upper frame 9 provided on the upper part of the.

A rotatable lower turret 11 is supported on the lower base 3, and a plurality of dies D are mounted on the circumference of the lower turret 11 at appropriate intervals. A rotatable upper turret 13 corresponding to the lower turret 11 is supported on the upper frame 9, and a plurality of punches P are mounted on the upper turret 13 at a position corresponding to the die D.

FIG. 9 of the lower and upper turrets 11 and 13.
The positions of the die D and the punch P mounted on the right side of FIG.
A striker 15 is vertically movable on the upper frame 9 above. The striker 15 is connected to a hydraulic cylinder 17 provided in the upper frame 9 via a ram 19, for example.

At the right end in FIG. 9 on the lower base 5, there is provided a carriage base 21 which is movable in the Y-axis direction (left-right direction in FIG. 9), and this carriage base 21 is in the X-axis direction. A carriage 23 that is movable in the direction (perpendicular to the paper surface in FIG. 9) is provided. The carriage 23 is provided with a plurality of work clamps 25 that clamp the work W at appropriate intervals in the X-axis direction.

With the above construction, the carriage W is moved in the Y-axis direction and the carriage 23 is moved in the X-axis direction, whereby the work W clamped by the work clamp 25 provided on the carriage 23 is moved in the X-axis and Y-axis directions. The workpiece W is moved in the direction, and the desired position of the work W is positioned at the processing position.

With the desired position of the work W positioned at this machining position, the upper and lower turrets 13, 11 are placed.
The desired punch P and die D are indexed and positioned at the processing position by rotating. Next, by driving the hydraulic cylinder 17 and moving the striker 15 up and down via the ram 19, the punch P and the die D cooperate with each other to perform a normal punching process on a desired position of the work W. .

On the circumference of the upper turret 13, as shown in FIG. 3, an arbitrary number (2 in this embodiment) is used.
Individual work holder devices 27 are mounted. Also,
A bending die 29, for example, is provided outside the lower turret 11 at a position corresponding to the work holder device 27 mounted on the upper turret 13.

More specifically, referring to FIGS. 1 and 2, the work holder device 27 in the processing position is as follows.
A slide surface 31 is provided in a groove formed in the upper turret 13, and guide members 33 are provided on both sides to move up and down along the slide surface 31. The guide members 33 are attached to the work holder main body 35 by a plurality of bolts 3.
It is attached at 7. Below the guide member 31 in the groove, a spring 39 biased upward is interposed. A work holding member 41 is attached to the lower portion of the work holder body 35 with a plurality of bolts 43.

With the above structure, when the striker 15 is lowered, the work holder body 35 is lowered against the urging force of the spring 39, so that the work holding member 41.
Will be lowered. When the striker 15 is raised, the work holder body 3 is pressed by the urging force of the spring 39.
5, The work holding member 41 is raised together and returned to the original position.

As the bending die 29, a bending die 45 is provided outside the lower turret 11. A bending punch 47 is mounted in the die hole of the bending die 45 and is vertically movable. A hydraulic cylinder 49 is provided outside the lower turret 11 at the processing position of the lower base 5.
The punch holder 53 is integrated with the piston 51 in the hydraulic cylinder 49, and the bending punch 47 is integrated with the punch holder 53. Further, the hydraulic cylinder 49 is provided with a differential transformer 55 or a potentiometer 57.

With the above structure, when the hydraulic cylinder 49 is operated, the bending punch 47 is moved up and down via the piston 51 and the punch holder 53. The movement amount of the bending punch 47 is detected by the differential transformer 55 or the potentiometer 57.

For example, as shown in FIG. 4, a slit 59 is formed in the work W clamped by the work clamp 25 by the cooperation of a normal punch P having a desired shape and a die D.

A work W having the slit 59 formed therein.
Is positioned at a predetermined position as shown in FIG. Then, as shown in FIG.
The striker 15 is lowered, and the work W is pressed by the work holding member 41. With the work W being pressed by the work pressing member 41, as shown in FIG. 5C, the hydraulic cylinder 49 is operated to cause the bending punch 4 to move.
By raising 7 the bending punch 47 and the bending die 45 cooperate to bend the work W (cut-and-raise processing).
Will be done.

For example, as shown in FIGS. 6A and 6B, by changing the shape of the descending end of the work holding member 41 for each plate thickness of the work W, the pressing force of the work W can be reduced. It is possible to prevent excessive pressing. Further, uniform bending is performed by bending the tip R shape of the work holding member 41 with proper bending R (R1 <R2 for thin plate R1, thick plate R2) for each plate thickness of the work W.

After slitting the work W,
As an example of the cut-and-raised work, the bending order of (A) to (D) as shown in FIGS. 7 and 8 is performed.

As described above, by bending the work W, an arbitrary bending height can be obtained regardless of the feed clear of the upper and lower turrets 13 and 11. Further, since the structure of the work holder device 27 and the bending die 29 is unitary, by changing the shapes of the work pressing member 41 and the bending punch 47, it is possible to obtain a complicated bent shape such as cut and raised. It is possible to reduce the deformation and scratches of the work W due to the excessive pressing of the work holding member 41. Also,
When the work pressing member 41 has a large width, the bending punch 47 having a small width can perform continuous bending.

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

[0026]

As will be understood from the above description of the embodiments, according to the present invention, since the constitution is as described in the claims, it is related to the feed clear of the upper and lower turrets. Any bending height can be obtained without any. Since the work holder device and bending die structure are simple,
A complicated bending shape can be obtained by changing the shapes of the work holding member and the bending punch. It is possible to reduce the deformation and scratches of the work due to the excessive holding of the work holding member. Further, if the work holding member has a large width, it is possible to perform continuous bending with a bending punch having a small width.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view taken along line I-I in FIG.

FIG. 2 is a view on arrow II in FIG.

FIG. 3 is a plan view showing a state where a work holder device is mounted on the upper turret.

FIG. 4 is a plan view showing a state in which a work is slit.

FIG. 5 is an operation explanatory view of bending a work with the turret punch press of the present invention.

FIG. 6 is an explanatory diagram of bending a thin plate and a thick plate of a work.

FIG. 7 is a process drawing of an example of bending a work by cutting and raising it from a slit.

FIG. 8 is a process drawing of an example in which a work is bent by cutting and raising from a slit.

FIG. 9 is a front view of a turret punch press according to an embodiment of the present invention.

[Explanation of Codes] 1 Turret punch press 11 Lower turret 13 Upper turret 25 Work clamp 27 Work holder device 29 Bending die 35 Work holder body 41 Work holding member 45 Bending die 47 Bending punch 49 Hydraulic cylinder 59 Slit P Punch die D Die mold

Claims (1)

[Claims] 1. A punch die mounted on the circumference of a rotatable upper turret at appropriate intervals, and a die mounted on the circumference of a rotatable lower turret at a position corresponding to the punch die. A turret punch press for punching a work in cooperation with a die, and a vertically movable work holder device equipped with a work holding member that presses the work on the outer circumference of the lower turret on the circumference of the upper turret. A turret punch press characterized in that a bending die is mounted on the outside of a lower turret at a processing position, and a bending punch movable up and down is provided in a die hole of the bending die.