JPH06179024A - Table structure of metal sheet machine - Google Patents

Abstract

PURPOSE:To be applied for a turret punch press and a laser beam machine, etc., to hardly damage a metal sheet because a contact pressure against a rotary member mounting the metal sheet is low and to hardly generate a lock of the metal sheet caused on an entry of a dust. CONSTITUTION:Many numbers of freely rotationable rollers 20 mounting a metal sheet are made a roller caster shape which is freely directional turning around a vertical axis against respective upper surfaces of work table. That is, the roller 20 is supported with a roller supporting frame 25 provided freely directional turning through to the work table 8 respectively through each roller base stand 24. This freely directional turning rollers are provided on a portion of work table that the metal sheet moves to two axial directions orthogonally crossing.

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, a table structure of a plate processing machine such as a laser processing machine, a bender, and a shearing machine.

[0002]

2. Description of the Related Art Conventionally, as a turret punch press, FIG.
There is a plan view. That is, the turret 52 is installed on the punch frame 51, and the work table device 50 is provided in front of it. The table 53 of the work table device 50 is composed of a center table 53a whose position is fixed and a pair of side tables 53b. The side tables 53b on both sides together with the carriage 54 at the front edge are moved forward and backward (Y-axis) on the rail 58 of the table base 57. Direction) It is installed so that it can move freely. A cross slide 55 is mounted on the carriage 54 so as to be movable left and right (X-axis direction), and a plurality of work holders 56 for holding the plate material W are attached to the cross slide 55.

Therefore, the plate material W is fed to the punching position P at the desired position by the forward / backward movement of the carriage 54 and the left / right movement of the cross slide 55. On the upper surfaces of the center table 53a and the side table 53b, the plate material W
Bearings 59 and 60 for smooth feeding
Are provided in large numbers, and the plate material W moves on it.

[0004]

However, since the free bearings 59 and 60 mount the plate material W on a rotatable ball, the contact with the plate material W becomes point contact, and the surface pressure of the contact surface is high. . Therefore, the plate material W may be finely scratched, and the above-described scratches become a practical problem in a plate material which is extremely disliked or a plate material which is easily scratched. Further, since the free bearings 59 and 60 are formed by projecting a part of the balls from the accommodation recess, it is difficult to prevent dust from entering the accommodation recess. Therefore, dust may be accumulated in the ball accommodating concave portion due to long-term use, and the rotation of the ball may be locked. When the balls are locked in this manner, the plate material W is more likely to be scratched.

An object of the present invention is to provide a table structure for a plate material processing machine in which the contact surface pressure against the rolling member on which the plate member is placed is low, the plate member is not easily scratched, and the rolling member is not easily locked by the intrusion of dust. That is.

[0006]

According to the table structure of the plate material processing machine of the present invention, a large number of rotatable rollers on which plate materials are placed can each be turned around a vertical axis with respect to the upper surface of the work table. . That is, each roller is supported by a roller support frame installed on the work table so as to be capable of changing direction. This direction-changeable roller is arranged on the work table portion where the plate material moves in two axial directions orthogonal to each other.

[0007]

With this structure, each roller on which the plate material is placed
As the plate material moves, it freely changes its direction. Therefore, it is possible to smoothly and freely support the plate material that moves in the two orthogonal axis directions by the roller. As described above, since the roller is used as the rolling member on which the plate material is placed, the surface pressure on the plate material is smaller than that of the ball, and the scratch is less likely to occur. In addition, the roller is easier to seal than the ball, and various products having excellent sealing properties are also produced, and even when used for a long period of time, rotation lock due to intrusion of dust hardly occurs.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2, the punch frame 1
Is composed of an upper frame portion 1a, a lower frame portion 1b, and a column portion 1c, and has a T-shaped planar shape as shown in FIG.
Further, as shown in FIG. 3, the front shape is formed in a square shape.
Upper and lower turrets 2 and 3 are coaxially installed on the lower frame portion 1b so as to be indexed and rotatable, and a hydraulic or mechanical punch for moving the ram 4 up and down at a punch position P is provided at the tip of the upper frame portion 1a. A drive mechanism 5 is installed.

Front of the lower frame 1b (front in the Y-axis direction)
And table bases 6 are provided side by side on both sides,
On top of that, a center table 7 and a pair of side tables 8,
A work table 9 composed of 8 and 8 is provided. The side tables 8 and 8 are on the left and right of the punch position P (X axis direction).
It is fixedly installed on both sides. The center table 7 is a pair of rails 1 provided on the table base 6 along the left-right direction.
It is movably installed on 0 and 10 via a linear bearing or the like, and is driven left and right by a Y-axis servomotor 11 and a feed screw 12. The center table 7 is divided into a plurality of divided center tables 7a to 7d.

Table frame 7'of the center table 7
Rails 13 and 1 along the front-rear direction on both left and right sides of (Fig. 4)
3 is provided, on which a carriage 14 is installed so as to be movable back and forth by a linear bearing or the like. Carriage 14
Is a plurality of work holders 15 that grip the tip of the plate material W.
Is mounted on a holder mounting rail 16 so that the mounting position can be changed, and is driven back and forth by a Y-axis servomotor 17 (FIG. 2) and a feed screw 18.

On the upper surface of the center table 7 and the upper surface of the side table 8, a large number of rollers 19 on which the plate material W is placed,
Many 20 are distributed and installed. Of these, as shown in FIGS. 5 and 7, the roller 19 of the center table 7 is rotatably installed on the roller support frame 21 fixed to the center table 7 in a fixed direction. The rotation direction of the roller 19 is the front-back direction. That is, the roller shaft 1
The direction of 9a is the X-axis direction. The roller 19 is shown in FIG.
As shown in FIG. 5, the roller outer peripheral member 23 is provided on the outer ring of the ball bearing 22 attached to the roller shaft 19a by resin molding or the like, and the outer peripheral surface of the roller outer peripheral member 23 is spherical.

As shown in FIGS. 6 and 8, the roller 20 of the side table 8 is in the form of a roller caster and is capable of changing direction. That is, each roller 20 is rotatably provided on a roller support frame 25 provided on the roller base 24 so as to be capable of changing its direction around a vertical axis. The roller base 24 is
The vertical axis 26 of the roller support frame 25 is rotatably supported by a ball bearing 27, and is fixed to the side table 8 with a bolt 28. The roller 20 has a roller outer peripheral member 30 formed by resin molding or the like on the outer ring of a ball bearing 29 attached to the roller shaft 20a, and the outer peripheral surface of the roller outer peripheral member 30 is spherical.

The operation of the above configuration will be described. The plate material W gripped by the work holder 15 on the work table 9 moves to the left and right (X axis direction) of the center table 7 and the carriage 1.
With the forward / backward movement of 4 (Y-axis direction), an arbitrary position is sent to the punch position P, and punching is performed by the punch drive mechanism 5.

In this case, since the center table 7 is moved left and right and the plate material W is moved only forward and backward with respect to the center table 7, the plate material W can be smoothly supported even by the directionally fixed roller 19. . Further, since the roller 19 is used as the rolling member on which the plate material W is placed, the surface pressure on the plate material W is smaller than that of the balls, and therefore scratches are less likely to occur. In addition, the roller 19 is more easily sealed than a ball, and various products having excellent sealing properties are also produced. Even after long-term use, the rotation of the roller 19 is unlikely to be locked due to the intrusion of dust. Therefore, scratches on the plate material W are prevented more reliably.

The plate W moves on the side table 8 in any direction such as front, rear, left and right, or diagonally, but since the roller 20 can change direction, the plate W moving in this arbitrary direction can be smoothly moved. Can be supported. Similar to the roller 19 of the center table 7, the roller 20 can be supported with a lower surface pressure than the ball and prevents the plate material W from being scratched, and also has a high sealing property and is rotationally locked by the intrusion of dust. Is prevented.

Further, according to this table structure, the plate material W
On the center table 7 where the movement of
Since the moving direction of the plate material W is only in the front-rear direction, the center table 53a as in the conventional example of FIG.
The number of scratches on the plate material W is reduced as compared with the case where the plate material W is moved back and forth and right and left.

In the above embodiment, the case where the present invention is applied to the punch press of the type having the center table 7 which moves in the X-axis direction is explained. However, in the punch press having the configuration of FIG. Instead, a roller 20 that can change direction may be provided. Further, the present invention is not limited to the punch press, and can be applied to a plate material processing machine in general for feeding a plate material in two axial directions.

[0018]

According to the table structure of the plate material processing machine of the present invention, the support of the plate material in the portion where the plate material moves in the two axial directions orthogonal to each other is carried out by the roller which can change the direction around the vertical axis. Compared with the case of using, the contact surface pressure against the plate material is low and scratches are less likely to occur. Further, since the roller is used, the sealing property is easily obtained, the rotation lock due to the intrusion of dust hardly occurs, and the smooth feeding can be performed for a long period of time.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a partially omitted front view of the same.

FIG. 4 is a front view of the center table and carriage of the same.

FIG. 5 is a front view showing a roller arrangement on a center table.

FIG. 6 is a front view showing a roller arrangement on a side table.

FIG. 7 is a sectional view of a roller of the center table.

8A is a cutaway front view of a roller of a side table, FIG. 8B is a cutaway side view of the same, and FIG. 8C is a plan view of the same.

FIG. 9 is a plan view of a conventional example.

[Explanation of symbols]

1 ... Punch frame, 2, 3 ... Turret, 6 ... Table base, 7 ... Center table, 8 ... Side table, 9
… Work table, 10… Rail, 13… Rail, 14
... Carriage, 15 ... Work holder, 20 ... Roller, 2
4 ... Roller base, 25 ... Roller support frame, P ... Punch position, W ... Plate material

Claims (1)

[Claims] 1. A large number of rotatable rollers on which a plate material is placed are arranged on the upper surface of a portion on the work table where the plate material moves in two orthogonal directions, and a roller support frame of each roller is perpendicular to the work table. The table structure of the plate processing machine installed so that the direction can be changed around the axis.