JPH06154906A - Turret punch press - Google Patents

Abstract

PURPOSE:To provide a turret punch press capable of being lightened and miniaturized while maintaining sufficient strength. CONSTITUTION:An upper turret 25 and a lower turret 27 are provided freely rotationally and dividably on an upper plate 9 and a lower plate 5 connecting a couple of side frames 7 and punching work is performed jointly by a punch (upper die) 29 and a die (lower die) 31 fitted, respectively to these upper and lower turrets 25 and 27. At this time, since a shaft (supporting member) 17 to support the upper and lower turrets 25 and 27 freely rotatably is provided between the upper and lower plates 9 and 5, working stress acted on the upper and lower plates 9 and 5 is received dispersedly by the couple of side frames 7 and the shaft 17, hence strength share of the side frames 7 is reduced.

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 having a frame capable of reducing weight while maintaining strength to resist processing stress.

[0002]

2. Description of the Related Art In a conventional turret punch press, two C-shaped plate side frames are provided on the left and right sides,
It is general that the side frames are connected by an upper plate and a lower plate to form a frame.
In such a frame, the upper turret is rotatably indexed on the upper plate, and the lower turret is rotatably indexed on the lower plate, so the upper and lower turrets rotate in sync with each other. To do. Therefore, the processing stress acting on the upper plate and the lower plate is generally resisted by the pair of side frames.

[0003]

However, in such a conventional technique, since the strength must be ensured by the side frame composed of two plate materials, the plate thickness of the plate material becomes large, and the outer shape is also increased. The size of the turret punch press has become large and the weight of the turret punch press has increased.

An object of the present invention is to pay attention to such a conventional technique, and to provide a turret punch press capable of reducing weight and size while securing sufficient strength. is there.

[0005]

In order to achieve the above-mentioned object, a turret punch press according to the present invention has a driving device provided on an upper plate or a lower plate connecting a pair of side frames in synchronization with each other. A turret punch press that can be freely indexed by rotation, is mounted on a lower turret, and performs processing by the cooperation of an upper die and a lower die. The upper and lower turrets are rotatably supported and the upper and lower plates are A support member for supporting is provided.

[0006]

According to the turret punch press according to the present invention, the upper turret and the lower turret are rotatably indexed on the upper plate and the lower plate connecting the pair of side frames. Punching is performed by the cooperation of the mounted upper and lower dies. At this time, since a supporting member that rotatably supports the upper and lower turrets is provided between the upper and lower plates, the processing stress acting on the upper and lower plates is dispersed by the pair of side plates and the supporting member. The side plate's share of strength is reduced. For this reason,
The thickness of the side plate can be reduced to reduce the turret punch press.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. A turret punch press 1 is shown in FIGS. 1 and 2. In this turret punch press 1, a mount 3 whose height can be adjusted is provided on the base,
A pair of C-shaped side frames 7, 7 are provided upright near the left and right ends (upper and lower sides in FIG. 2) of the upper surface of the lower plate 5 provided on the pedestal 3. The upper ends of the side frames 7, 7 are horizontally connected by the upper plate 9. A drive device such as a hydraulic cylinder 11 is provided on the front side of the upper surface of the upper plate 9, and a striker 13 is provided on the lower side through the upper plate 9 so as to be vertically movable. Hydraulic cylinder 11
Is connected to a hydraulic pump (not shown) through a pipe 15.

A shaft 17 as a support member is fixedly provided between the upper plate 9 and the lower plate 5 at a rear portion of the upper plate 9. The shaft 17 is composed of an upper shaft 17U and a lower shaft 17L, and they are integrally connected by a bolt 19. A bearing 23 having a bearing 21 is provided above and below the lower shaft 17L.
3, an upper turret 25 and a lower turret 27 are provided. Therefore, the upper turret 25 and the lower turret 27
Is rotatable and indexable around the shaft 17.

On the circumference of the upper turret 25, a plurality of punches 29 as upper dies are exchangeably mounted. And
A plurality of lower dies 31 opposed to the punch 29 are replaceably attached to a die holder 33 provided on the lower turret 27. A work table 35 is provided on the front side (left side in FIG. 1) of the upper turret 25 and the lower turret 27 to position the work W between the die 31 and the punch 29.

A sprocket 37 is provided below the bearing 23.
Is installed. A turret rotation servomotor 39 is provided on the rear side of the lower plate 5, and a sprocket 41 is attached to the rotation shaft thereof. A chain 43 is wound around the sprocket 37 on the lower turret 27 side and the sprocket 41 on the servo motor 39 side.

Therefore, by rotating the servo motor 39, the upper turret 25 and the lower turret 27 can be integrally rotated, and the punch 29 and the die 31 can be indexed to the processing position below the striker 13.

Next, the processing operation will be described. First,
By operating the servo motor 39, a set of the punch 29 and the die 31 mounted on the upper turret 25 and the lower turret 27 for performing desired processing is indexed to a processing position.

Thereafter, the work W is placed on the work table 35 and positioned between the punch 29 and the die 31, and the hydraulic cylinder 11 lowers the striker 13 to strike the punch 29 to perform punching. The punched out dust falls from the notch 45 provided in the lower plate 5 to the slope 47 and is discharged to the outside of the machine.

As described above, since the upper plate 9 and the lower plate 5 are connected and fixed by the shaft 17 as a strength member, the processing stress when punching by the hydraulic cylinder 11 is caused by the shaft 17 and the pair of side frames 7. Receive dispersedly. As a result, the plate thickness of the side frame 7 can be reduced, so that the turret punch press 1 can be made lighter and the cost can be reduced.

The present invention is not limited to the above-mentioned embodiments, but can be carried out with appropriate modifications.

[0016]

The turret punch press according to the present invention is constructed as described above, and the upper turret and the lower turret are rotatably indexable on the upper plate and the lower plate connecting the pair of side frames. The punching process is performed by the cooperation of the upper die and the lower die mounted on the upper and lower turrets. At this time, since a supporting member that rotatably supports the upper and lower turrets is provided between the upper and lower plates, the processing stress acting on the upper and lower plates is dispersed by the pair of side plates and the supporting member. The side plate's share of strength is reduced. Therefore, the thickness of the side plate can be reduced to reduce the turret punch press.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a turret punch press according to the present invention.

FIG. 2 is a plan view seen from the direction II1 in FIG. 1 and II2-II.
FIG. 2 is a sectional view taken along line 2.

[Explanation of symbols]

 1 Turret Punch Press 5 Lower Plate 7 Side Frame 9 Upper Plate 11 Hydraulic Cylinder (Drive Device) 17 Shaft (Supporting Member) 25 Upper Turret 27 Lower Turret 29 Punch (Upper Mold) 31 Die (Lower Mold)

Claims (1)

[Claims] 1. A driving device provided on an upper plate or a lower plate connecting a pair of side frames is rotatable and indexable synchronously, and is mounted on a lower turret, and by a cooperation of a lower die. A turret punch press for processing, comprising a support member that rotatably supports the upper and lower turrets and a support member that supports between the upper and lower plates.