JP2747062B2 - Turret punch press - Google Patents

Description

Description of the Invention [Object of the Invention] (Field of Industrial Application) The present invention relates to a turret punch press, and more particularly to a turret punch press having a laser processing function.

(Prior Art) Conventionally, a turret punch press for punching a plate-shaped workpiece is added with a laser processing head for performing laser processing, and a combined processing machine for performing punching and laser processing. Is being developed.

As a configuration in which the laser processing head is mounted on the turret punch press, a configuration in which the laser processing head is mounted on the upper frame of the turret punch press via a shock absorber is implemented, and the laser processing head is mounted on the punch mounting hole of the upper turret in the turret punch press. Has been proposed.

(Problems to be Solved by the Invention) As in the former, in the configuration in which the laser processing head is mounted on the upper frame in the turret punch press,
The punching position (the position below the striker) for performing punching on the workpiece by the punch and die mounted on the upper and lower turrets and the laser processing position for performing laser processing are shifted in the X-axis direction or the Y-axis direction. When switching between both processes, there is a problem that the coordinate position needs to be converted.

Further, in the configuration in which the laser processing head is mounted in the punch mounting hole in the upper turret, there is a problem that the optical system of the laser processing head is easily damaged by violent vibration of the upper turret during punching.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention provides an upper turret in which a plurality of punches are supported detachably and interchangeably, and a plurality of punches corresponding to the punches. In a turret punch press rotatably provided with a lower turret supporting a die, a detachable laser processing head is provided in a punch device hole in an upper turret, and a detachable device for attaching and detaching the laser processing head is provided on a frame. And a laser processing head connected to a laser oscillator via a flexible laser beam transmitting member.

(Operation) With the above configuration, when performing the punching process in the turret punch press, the laser processing head is detached from the upper turret by the attachment / detachment device, and is protected from vibration of the upper turret. When performing the laser processing, the laser processing head is mounted on the upper turret, and the laser processing head is positioned below the striker, so that the laser processing can be performed at the same position as the punching processing position. At this time, since the laser processing head is connected to the laser oscillator via a flexible laser beam transmitting member, the degree of freedom of the optical path of the laser beam is large, and the laser processing head is always kept connected to the laser oscillator. Thus, the configuration of the optical path for guiding the laser beam to the laser processing head is simplified.

(Example) Referring to FIG. 2, FIG. 2 illustrates a turret punch press in which a frame 3 is a portal type as the turret punch press 1. Turret punch press of this kind 1
In general, the upper frame 3U of the frame 3 is provided with a fan-shaped or disk-shaped upper turret 7 having a large number of punches 5 detachably exchangeable via an upper rotation shaft 9. The lower frame 3L is rotatably supported via a lower rotating shaft 15 on the lower frame 3L.

The upper frame 3U is provided with a ram 17 movably up and down. The ram 17 is provided with a punch 5 positioned at a processing position (a position below the ram 17) by rotation of upper and lower turrets 7 and 13. A pressing striker 19 is installed.

The turret punch press 1 is provided with a work movement positioning device 21 for moving and positioning a plate-shaped workpiece W to be punched by the punch 5 and the die 11 in the X-axis and Y-axis directions. The work movement positioning device 21 is guided by a guide rail in the Y-axis direction provided on the lower frame 3L and is movable in the Y-axis direction, and is supported by the carriage base 23 so as to be movable in the X-axis direction. And a plurality of work clamps 27 mounted on the carriage 25.

As described above, since the turret punch press 1 having the above configuration is well known, a more detailed description of its configuration and operation will be omitted.

In the turret punch press 1 having the above configuration,
In order to perform laser processing on the work piece W, a laser oscillator 29 is provided at an appropriate position on the frame 3, and a laser processing head 31 is detachably mounted on the upper turret 7. And the above laser processing head
31 and a laser oscillator 29 are, for example, a laser beam transmitting member 33 composed of a hollow waveguide or the like in which the inner peripheral surface of an optical fiber or a flexible thin nickel pipe is coated with a germanium thin film to increase the laser beam reflectance. Connected via That is, the laser processing head 31 receives the transmission of the laser beam from the laser oscillator 29 via the laser beam transmission member 33, and moves the laser beam to the upper surface of the workpiece W or a position slightly lower than the upper surface by the condenser lens provided inside. Is configured to be focused and irradiated.

When performing punching on the workpiece W by pressing the punch 13 with the striker 19, an attaching / detaching device 35 for attaching and detaching the laser processing head 31 to and from the upper turret 7 in order to protect the laser processing head 31 from severe vibration. Are mounted at appropriate positions on the upper frame 3U.

In the present embodiment, the attachment / detachment device 35 is provided at a position where the striker 19 is appropriately avoided. That is, the attachment / detachment device 35 attaches / detaches the laser processing head 31 at a position where the laser processing head 31 is separated from a position below the striker 19 (for example, at a position where the laser processing head 31 is appropriately rotated such as 45 ° or 90 °) by rotation of the upper turret 7. It is configured to do so.

In the present embodiment, the attaching / detaching device 35 is a first attaching / detaching device.
As shown in the figure, a first air cylinder 37 for vertical operation mounted on a part of the upper frame 3U, and a second air cylinder 39 for horizontal operation vertically moved by the first air cylinder 37, 2 At the tip of the piston rod 39R that can reciprocate freely in the air cylinder 39, a robot hand or a finger that engages and holds an engaging portion 31K such as a circumferential groove formed on the upper part of the laser processing head 31 An appropriate engagement holding section 41 is provided.

Although not shown in detail, the engagement holding portion 41 is desirably configured so that opposing fingers open and close, for example, like a tool clamp in a tool change arm in an ATC of a machine tool. The configuration of the attachment / detachment device 35 is not limited to the embodiment as described above,
For example, it is also possible to adopt a configuration such as a normal robot hand, and to adopt a configuration in which the laser processing head 31 is attached to and detached from the punch mounting hole 7H of the upper turret 7.

With the above configuration, the upper turret 7 is rotated to position the laser processing head 31 mounted on the upper turret 7 at a position corresponding to the attaching / detaching device 35, and then the piston rod 39R of the second air cylinder 39 at the lowered position. When the protruding operation is performed, the engagement holding portion 41 provided at the distal end portion of the piston rod 39R is engaged with the engagement portion 31K of the laser processing head 31. Thereafter, when the first air cylinder 37 is operated to raise the second air cylinder 39, the laser processing head 31 is removed upward from the punch mounting hole 7H of the upper turret 7.

As described above, from the upper turret 7 to the laser processing head 31
The optical system of the laser processing head 31 can be protected from violent vibration during punching by the punch 5 and the die 11 by holding the optical pickup in a state where it has been taken out. In addition, the first and second cylinders 37 and 39 are configured as a single-acting cylinder having a return spring therein. When the laser processing head 31 is held in a detached state, the first and second cylinders 37 and 39 are held by the spring. Thus, it is possible to effectively prevent the vibration of the upper frame 3U from being transmitted to the laser processing head 31.

When performing laser processing, the punch mounting hole for mounting the laser processing head 31 on the upper turret 7 is positioned at a position corresponding to the attaching / detaching device 35, and then the piston rod 39R of the second air cylinder 39 is held in a protruding state. By lowering the second air cylinder 39 by the operation of the first air cylinder 37, the laser processing head 31 is mounted in the punch mounting hole 7H. Thereafter, by contracting the piston rod 39R of the second air cylinder 39, the engagement holding portion 41 is detached from the engagement portion 31K of the laser processing head 31, and the upper turret 7 becomes rotatable.

Therefore, by rotating the upper turret 7 and positioning the laser processing head 31 at a position below the striker 19, laser processing can be performed on the workpiece W at the same position as the punching processing position.

When performing laser processing on the workpiece W, in order to aspirate gas and the like generated by the laser processing, in the lower turret 13, a die mounting hole 13H corresponding to the punch mounting hole 7H in which the laser processing head 31 is to be mounted, Suction port member 43
Is provided. This suction port member 43 has a suction duct
One end of 45 is connected. The suction duct 45 is embedded in a groove 13G provided in the lower turret 13, and
And is guided to the lower end of the lower rotating shaft 15. The other end of the suction duct 45 is connected to a suitable suction device (not shown) such as a blower via a rotary joint 47 and a second suction duct 49 attached to the lower end of the lower rotary shaft 15. ing.

Therefore, gas or the like generated during the laser processing is sucked by the suction port member 43.

[Effects of the Invention] As will be understood from the above description of the embodiments, according to the present invention, the laser processing head is detachably mounted on the upper turret in the turret punch press, and the laser processing head is positioned below the striker. Since the laser processing is performed by positioning, the laser processing can be performed at the same position as the punching processing position by the punch and the die mounted on the upper and lower turrets.

Further, at the time of punching by the punch and the die, the laser processing head can be kept detached from the upper turret by the attaching / detaching device, so that the laser processing head can be protected from severe vibration of the upper turret at the time of punching.

Furthermore, since the laser processing head and the laser oscillator are connected by a flexible laser transmission member, the degree of freedom of the optical path for guiding the laser beam from the laser oscillator to the laser processing head is large, and the configuration of the optical path is simplified. Is what you can do.

[Brief description of the drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged sectional view taken along the line II in FIG. FIG. 2 is a front view schematically showing the overall configuration. 7 upper turret, 13 lower turret 31 laser processing head 29 laser oscillator 33 laser beam transmitting member 35 mounting / detaching device

Claims (1)

(57) [Claims] A turret punch press rotatably provided with an upper turret supporting a plurality of punches detachably and exchangeably and a lower turret supporting a plurality of dies corresponding to the punches, and a punch device for the upper turret. A removable laser processing head is provided in the hole, and a mounting / dismounting device for mounting and removing the laser processing head is provided on the frame,
A turret punch press comprising a laser processing head connected to a laser oscillator via a flexible laser beam transmitting member.