JP2001198639A - Plate material positioning apparatus of plate working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plate material positioning apparatus of a plate material working machine capable of positioning at high speed, avoiding a dead zone and reducing a cost. SOLUTION: In a plate material positioning apparatus of a plate material working machine arranged with a Y axis carriage base 29 freely moving/ positioning in the Y axis direction and plural work clamp devices 31 freely moving/positioning in the X axis direction to the Y axis carriage base, a X axis drive screw 41 and a X axis drive motor 42 are arranged in the Y axis carriage base, a nut member regulating the movement in the X axis direction to screwed to the X axis drive screw as well as a drive motor to rotation drive the nut member are respectively arranged in the work clamp devices, the plural clamps devices are simultaneously, individually and freely moving/ positioning in the X axis direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate positioning device for a plate processing machine.

[0002]

2. Description of the Related Art In a plate positioning apparatus in a plate processing machine such as a punch press, an X-axis carriage is usually provided on a Y-axis carriage, and a plurality of work clamping devices are mounted on the X-axis carriage.

When a plate material is processed by the above-described punch press, the punch and the work clamp device interfere around the work clamp device holding the plate material.
An unprocessable area (so-called dead zone) is formed.

In order to eliminate the above-mentioned dead zone, the work clamp device which has entered the dead zone region is temporarily
A technique of opening a clamp and rotating a clamp nail portion sideways to avoid a dead zone is disclosed in Japanese Utility Model Laid-Open No. 6-348.
30.

[0005]

Since the positioning of the plate material in the conventional plate material positioning device is performed together with a large mass X-axis carriage on which a plurality of work clamp devices are mounted, the acceleration / deceleration characteristics of the work clamp device during movement are reduced. It's bad.

Further, the work clamp device having the dead zone avoiding mechanism has a problem that the structure is complicated and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a high-speed positioning and a dead zone avoiding plate positioning method for a low-cost plate processing machine. It is to provide a device.

[0008]

According to a first aspect of the present invention, there is provided a plate positioning apparatus for a plate processing machine, comprising: a Y-axis carriage base movable and positionable in a Y-axis direction; A plate material processing apparatus provided with a plurality of workpiece clamping devices capable of moving, moving and positioning in the X-axis direction, wherein the Y-axis carriage base is provided with an X-axis drive screw and an X-axis drive motor; Each of the devices is provided with a rotatable nut member for restricting the movement in the X-axis direction, which is screwed to the X-axis drive screw, and a drive motor for rotating the nut member is provided. ,
Alternatively, the gist of the present invention is to individually and freely move and position in the X-axis direction.

[0009]

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

FIG. 1 is a front view of a turret punch press having a gate-shaped main body frame to which a plate positioning apparatus according to the present invention is applied. FIG. 2 is a view taken along the line II-II in FIG.

As shown in FIG. 1, the turret punch press 1 has a gate-shaped main body frame 3, and the main body frame 3 extends between a lower frame 5 and an upper frame 7 by right and left columns 9 (a, b), a work space 11 is formed between the lower frame 5 and the upper frame 7.

The turret punch press 1 is provided with an upper turret disk 17 and a lower turret disk 19 which support a large number of punches 13 and dies 15 in a detachable manner. The upper and lower turret disks (17, 1
9) The upper and lower turret disks (17, 19) are horizontally rotated synchronously by a rotation driving means (not shown) so that a desired die (punch and die) can be rotationally indexed to the processing center position 21. It is provided in.

The punch 13 indexed to the processing center position 21 by the rotation of the upper and lower turret disks (17, 19)
A ram 25 having a striking element 23 on its lower surface for pressing is provided so as to be vertically movable. Although the drive means of the ram 25 is not shown, a known hydraulic drive method using a hydraulic cylinder or a known mechanical method using an eccentric crank mechanism can be used for the ram drive means.

A plate positioning device 27 is provided to the right of the work space 11, that is, to the right of the upper and lower turret disks (17, 19).

As shown in FIGS. 1 and 2, the plate material positioning device 27 is a Y-axis carriage base 2 which is movable in the Y-axis direction.
9 on the Y-axis carriage base 29 in the X-axis direction (Y
(In the direction perpendicular to the axis)
) Work clamp devices 31 (a, b, c,).

The above-described Y-axis carriage base 29 moves the fixed work table 33 provided on the lower
The Y-axis carriage base 29 is provided so as to extend to both sides of the lower frame 5 so as to straddle in the axial direction. The Y-axis carriage base 29 has both sides of the fixed work table 33 that move integrally with the Y-axis carriage base 29 in the Y-axis direction. A table 34 is provided.

The fixed work table 33 and the side table 34 have work support surfaces of the same height.

Further, the above-described Y-axis carriage base 29
Are movably provided on Y-axis guide rails 35 and 37 provided on both sides of the lower frame 5, and are Y-axis drive screws which are rotationally driven by Y-axis drive motors 36 provided on columns 9 a of the main body frame 3. Nut member 40 screwed to 38
It is integrally connected to.

Therefore, by appropriately driving the Y-axis drive motor 36 by an NC controller (not shown),
The Y-axis carriage base 29 can be positioned at any position in the Y-axis direction.

As shown in FIG. 3, a pair of X-axis guide rails 39 extending in the X-axis direction are provided on the left side surface of the Y-axis carriage base 29. On the Y-axis carriage base 29, the X-axis guide rail 39 is provided.
X-axis drive screw 41 parallel to Y-axis carriage base 29
Both ends are rotatably supported by a pair of bearing members 43 provided above.

It is desirable that the X-axis drive screw 41 and the Y-axis drive screw 38 use ball screws with good mechanical efficiency.

On the left end of the Y-axis carriage base 29, an X-axis drive screw 41 is driven to rotate.
A shaft drive motor 42 is provided.

The X-axis guide rail 39 is movably engaged in the X-axis direction via a guide member 45 provided on the housing 44 of the work clamping device 31 described above.

For the X-axis guide rail 39 and the guide member 45, for example, a linear motion bearing (LM guide, commercially available) can be used.

As shown in FIGS. 3 and 4, a nut member 47 screwed to the X-axis drive screw 41 is rotatably mounted on a housing 44 of the work clamping device 31 via a radial bearing 49. A nut fixing member 53 is provided at both ends in the axial direction of the nut member 47 so as to be engaged with the nut member 47 via a thrust bearing 51.

The radial bearing 49 is mounted on a step provided at both ends of a through hole 55 provided in the housing 44, and an outer ring thereof is fixed by a bearing retainer 57.

Therefore, the nut member 47 is rotatable with respect to the housing 44, but its movement in the axial direction is restricted.

A toothed pulley 59 is provided at one shaft end (the lower end in FIG. 4) of the nut member 47.
A toothed belt 65 is looped between the toothed pulley 59 and a toothed pulley 63 provided on an output shaft of a drive motor 61 fixed to the housing 44.

In the plate positioning device 27 having the above-described structure, when the drive motors 61 provided in the work clamp devices 31 (a, b, c) are individually driven while the X-axis drive motor 42 is locked, the work clamp device 31
(A, b, c) can be individually moved to a desired position.

The work clamping device 31 (a, b,
c) The drive motor 61 is locked, and the X-axis drive motor 4 is locked.
2 is driven, a plurality of work clamping devices 31 (a,
b) and c) can be simultaneously moved in the X-axis direction.

The X-axis drive motor 42 and the drive motor 6
1 can be driven at the same time, and in that case, the movement speed is added, so that a higher speed movement is possible.

Therefore, the processing position of the plate material W is moved to the processing center position 21 by appropriately rotating the Y-axis driving motor 36 and the X-axis driving motor 42 by an NC controller (not shown). At the same time, after a desired die (punch and die) among a plurality of dies mounted on the upper and lower turret disks (17, 19) is rotationally indexed to the processing center position 21, the ram 25 is lowered and the punch 13 is moved. Can be punched by hitting with a striker 23.

When the plate W is clamped by the work clamping device 31, it is necessary to adjust the position in accordance with the length of the plate W in the X-axis direction. In this case, X
In a state where the shaft drive motor 42 is locked, the drive motor 61 provided in the work clamping device 31 (a, b, c)
Can be individually driven to move to a desired position.

In the above-mentioned plate material positioning device 27,
The X-axis carriage having a large mass is eliminated, and the work clamp device 31 is directly moved and positioned by the X-axis drive motor 42 via the X-axis drive screw 41. Acceleration / deceleration characteristics are improved. Also,
Since the mass on the Y-axis carriage base 29 is reduced, the Y-axis acceleration / deceleration characteristics are also improved.

Further, since the work clamp devices 31 can be individually moved and positioned, the work clamp devices 31 that have entered the dead zone can be evacuated from the dead zone to a safe area.

[0036]

According to the first aspect of the present invention, since the X-axis carriage is eliminated and the work clamp device is directly driven, the acceleration / deceleration time of the X-axis and the Y-axis is reduced, and the speed is increased. Can be positioned.

In addition, since the work clamp device itself is provided with a drive motor so that the work clamp device can be individually moved, the work clamp device that has entered the dead zone can be evacuated from the dead zone to a safe area.

Further, since the dead zone avoiding mechanism having a complicated structure is eliminated, the cost of the work clamping device can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a turret punch press to which a plate positioning device according to the present invention is applied.

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

FIG. 3 is a view taken in the direction of the arrow III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 turret punch press 3 main body frame 5 lower frame 7 upper frame 9 (a, b) column 11 work space 13 punch 15 die 17 upper turret disk 19 lower turret disk 21 processing center position 23 striker 25 ram 27 plate material positioning device 29Y Axis carriage base 31 (a, b, c) Work clamp device 33 Fixed work table 34 Side table 35, 37 Y-axis guide rail 36 Y-axis drive motor 38 Y-axis drive screw 39 X-axis guide rail 41 X-axis drive screw 42 X Shaft drive motor 43 Bearing member 44 Housing 45 Guide member 47 Nut member 49 (a, b) Radial bearing 51 (a, b) Thrust bearing 53 (a, b) Nut fixing member 55 Through hole 57 (a, b) Bearing press 59, 63 Toothed pulley 61 Drive motor 65 Toothed belt W Plate

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuji Matsumoto 28-41 Matsukaze-cho, Hiratsuka-shi, Kanagawa F-term (reference) 4E048 CA02 CA08 CA10

Claims (1)

[Claims] 1. A plate positioning device for a plate processing machine comprising a Y-axis carriage base movable in the Y-axis direction and a plurality of work clamp devices movable in the X-axis direction and positioned on the Y-axis carriage base. In the above, Y
An X-axis driving screw and an X-axis driving motor are provided on the shaft carriage base, and a nut member for restricting the movement in the X-axis direction screwed to the X-axis driving screw is rotatably provided in each of the work clamping devices. A plate material positioning device for a plate material processing machine, comprising: a drive motor for driving a nut member to rotate; and a plurality of the work clamping devices provided simultaneously or individually so as to be movable and positionable in an X-axis direction.