JPH03165981A - Turret punch press - Google Patents

Abstract

PURPOSE:To perform laser beam machining at the same position as the punching position by a punch and dies by fitting a laser beam machining head freely attachably and detachably on an upper turret of a turret punch and positioning the laser beam machining head at the lower position of a striker. CONSTITUTION:In performing laser beam machining, a punch fitting hole where the laser beam head 31 is to be fitted is positioned at the position corresponding to an attaching and detaching device 35 on the upper turret 7. Afterward, a piston rod 39R of a second air cylinder 39 is held in a projected state and the second air cylinder 39 is lowered by an action of a first air cylinder 37. As a result, the laser beam machining head 31 is fitted into the punch fitting hole 2H. Afterward, the piston rod 39R of the second air cylinder 39 is operated to contract. As a result, an engaging holding part 41 separates from an engaging part 31K of the laser beam machining head 31 and the turret 7 is made rotatable. Accordingly, laser beam machining can be performed at the same position as punching position on a workpiece W by rotating the turret 7 and positioning the laser beam machining head 31 at the lower position of the striker 19.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a turret punch press, and more particularly to a turret punch press having an added laser processing function.

(Prior art) A laser processing head for performing laser processing is added to a turret punch press that conventionally performs punching on plate-shaped workpieces, resulting in a combined processing machine that performs both punching and laser processing. is being developed.

The laser processing head is attached to the turret punch press by attaching it to the upper frame of the turret punch press via a shock absorber, and the laser processing head is attached to the punch mounting hole of the upper turret of the turret punch press. A configuration in which a head is attached has been proposed.

(Problem to be Solved by the Invention) As in the former case, in a configuration in which a laser processing head is attached to the upper frame of a turret punch press, a punching process is performed in which a workpiece is punched by punches and dies attached to the upper and lower turrets. position(
There is a problem in that the lower position of the striker) and the laser processing position where laser processing is performed are shifted in the X-axis direction or the Y-axis direction, and when switching between the two processings, it is necessary to convert the coordinate position.

Furthermore, in the configuration in which the laser processing head is mounted in the punch mounting hole in the upper turret, there is a problem in that the optical system of the laser processing head is likely to be damaged by intense 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 that supports a plurality of punches in a detachable and exchangeable manner, and a plurality of punches that correspond to the punches. In a turret punch press that is rotatably equipped with a lower turret that supports a die, a removable laser processing head is provided in the punch device hole in the upper turret and bottom, and a detachable device for attaching and detaching the laser processing head is attached to the frame. In addition, the laser processing head is connected to the laser oscillator via a flexible laser beam transmission section.

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

(Example) Referring to FIG. 2, as the turret punch press 1, a turret punch press in which the frame 3 is gate-shaped is illustrated. The structure of this type of turret punch press 1 is well known, but to roughly explain it, the frame 3
A fan-shaped or disk-shaped upper turret 7, which is equipped with a large number of bunches 5 that can be attached and detached and replaced, is rotatably supported on the upper frame 3U via an upper rotating shaft 9. A lower turret 13 that removably supports a large number of dies 11 corresponding to 5 is rotatably supported via a lower rotating shaft 15.

The upper frame 3U is equipped with a ram 17 that is movable up and down, and this ram 17 has upper and lower turrets 7.1.
One striker is attached to strike the bunch 5 positioned at the machining position (below the ram 17) by the rotation of the ram 17.

The turret punch press 1 is provided with a workpiece moving and positioning device 21 in order to move and position a plate-shaped workpiece W to be punched by the punch 5 and the die 11 in the X-axis and Y-axis directions. This workpiece movement and positioning device 21 includes a carriage base 23 that is movable in the Y-axis direction guided by a guide rail in the Y-axis direction provided on the lower frame 3L, and a carriage base 23 that is movable in the X-axis direction. It consists of a supported carriage 25 and a plurality of work clamps 27 attached to the carriage 25.

Incidentally, as mentioned above, since the turret punch press 1 having the above configuration is well known, a more detailed explanation of its configuration and operation will be omitted.

In the turret punch press 1 having the above configuration, the frame 3 is used to perform laser processing on the workpiece W.
Two laser oscillators are provided at appropriate positions, and a laser processing head 31 is detachably mounted on the upper turret 7. The laser processing head 31 and the laser oscillator 29 are made of, for example, a hollow waveguide in which the inner peripheral surface of an optical fiber or a thin flexible nickel pipe is coated with a germanium thin film to increase the reflectance of the laser beam. They are connected via a laser beam transmission member 33. That is, the laser processing head 31 receives a laser beam transmitted and supplied from the laser oscillator 29 via the laser beam transmission member 33, and directs the laser beam to the upper surface of the workpiece W or a position slightly below the upper surface using a condensing lens provided inside. It is configured to irradiate focused light.

An attachment/detachment device 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 when punching the workpiece W by pressing the punch 13 with the single striker. 35 are mounted at appropriate positions on the upper frame 3U.

In this embodiment, the attachment/detachment device 35 is provided at a position appropriately avoiding the striker 19. That is, the attachment/detachment device 35 attaches and detaches the laser processing head 31 at a position where the laser processing head 31 is separated from the downward position of one strike force (for example, an appropriately rotated position such as 45 degrees or 90 degrees) due to the rotation of the upper turret 7. It is configured to do the following.

In this embodiment, the attachment/detachment device 35 is the first
As shown in the figure, it consists of a first air cylinder 37 for vertical operation attached to a part of the upper frame 3U, and a second air cylinder 39 for horizontal operation that is moved up and down by this first air cylinder 37. The tip of the reciprocating piston rod 39R in the 2-air cylinder 39 has a robot hand or finger that engages and holds an engaging part 31K, such as a circumferential groove, formed on the upper part of the laser processing head 31. An appropriate engagement holding part 41 such as
is provided.

Although detailed illustration is omitted, it is preferable that the engaging and holding portion 41 has a structure in which opposing fingers open and close, for example, like a tool clamp in a tool changing arm in an ATC of a machine tool. Note that the attachment/detachment device 35
The configuration is not limited to the above-mentioned embodiments, but may be a configuration such as that of a normal robot hand, and the laser processing head 31 can be attached to and detached from the punch mounting hole 7H of the upper turret 7. It is also possible.

With the above configuration, the upper turret 7 is rotated and the laser processing head 31 mounted on the upper turret 7 is attached to the attachment/detachment device 35.
After the second air cylinder is positioned at a position corresponding to Engagement part 3
1K is engaged. Thereafter, when the first air cylinder 37 is operated to raise the three second air cylinders, the laser processing head 31 is inserted into the punch mounting hole 7 of the upper turret 7.
Removed from H upwards.

As mentioned above, the laser processing head 31 is connected to the upper turret 7.
By holding the laser processing head 31 in the extracted state, the optical system of the laser processing head 31 can be protected from severe vibrations during punching processing by the bunch 5 and the die 11. Note that when the first and second cylinders 37 and 39 are configured as single-acting cylinders with internal return springs and are held with the laser processing head 31 removed,
By holding the upper frame 3U using the spring, 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, after positioning the punch mounting hole in the upper turret 7 in which the laser processing head 31 is to be mounted at a position corresponding to the attachment/detachment device 35, the piston rods 39R of the three second air cylinders are held in a protruding state. Then, by lowering the three second air cylinders by operating 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 in the second air cylinder 39, the laser processing head 3
The engagement holding part 41 is disengaged from the first engagement part 31K, 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 one strike force, the workpiece W can be laser processed at the same position as the punching processing position.

When performing laser processing on a workpiece W, in order to suck gas generated by laser processing, a die mounting hole 13H corresponding to the punch mounting hole 7H in which the laser processing head 31 is to be mounted is inserted into the lower turret 13. A suction port member 43 is provided. This suction port member 43 includes
One end of the suction duct 45 is connected. Suction duct 4
5 is embedded in a groove 13G provided in the lower turret 13, passes through the lower rotating shaft 15, and is guided to the lower end of the lower rotating shaft 15. The other end of the suction duct 45 is connected to an appropriate suction device (not shown), such as a blower, through a rotary joint 47 attached to the lower end of the lower rotating shaft 15 and a second suction duct 49. ing.

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

[Departure'! Effects of jJ] As can be understood from the above description of the embodiments, according to the present invention, the laser processing head is removably attached to the upper turret of the turret punch press, and the laser processing head is placed at a position 11 below the striker. Since the laser processing is performed by positioning at the upper and lower turrets, the laser processing can be performed at the same position as the punching processing position using the punches and dies mounted on the upper and lower turrets.

In addition, during punching processing using the punch and die,
Since the laser processing head can be maintained in a detached state from the upper turret by the attachment/detachment device, it is possible to protect the laser processing head from severe vibration of the upper turret during punching processing.

Furthermore, since the laser processing head and the laser oscillator are connected by a flexible laser transmission member, there is a large degree of freedom in the optical path for guiding the laser beam from the laser oscillator to the laser processing head, and the optical path structure can be simplified. It is something that can be achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged sectional view taken along line I-1 in FIG. 2. Figure z is a front view schematically showing the overall configuration. 1 2 7... Upper turret 1 3... Lower turret 1... Laser processing head 29... Laser oscillator 3... Laser beam transmission member 5... Attaching/detaching device

Claims (1)

[Claims] A turret punch press is provided which is rotatably equipped with an upper turret that supports a plurality of punches in a detachable and replaceable manner, and a lower turret that supports a plurality of dies corresponding to the punches. A laser processing head is provided, an attachment/detachment device for attaching and detaching the laser processing head is provided on the frame, and the laser processing head is connected to a laser oscillator via a flexible laser beam transmission member. Turret punch press.