JPH03165982A - Combined machine of laser beam and punch - Google Patents

Abstract

PURPOSE:To simplify constitution of an optical path of a laser beam by using a hollow waveguide for a laser beam receiving part at the time of guiding a laser beam irradiating from a laser beam irradiation part to a laser beam machining head via the laser beam receiving part. CONSTITUTION:A laser beam oscillator 43 is connected with the laser beam irradiation part 67 via an optical fiber 75 and the laser beam receiving part 65 to receive the laser beam from the laser beam irradiation part 67 is connected with the laser beam machining head 41 via the hollow waveguide 63. Accordingly, since the diameter of the hollow waveguide 63 at the receiving part is larger as compared with that of the optical fiber 75 at the irradiation side, the laser beam can be easily transmitted. In addition, since the oscillator 43 and the irradiation part 67, and the receiving part 65 and the machining head 41 are connected with each other via the flexible waveguide, respectively, the constitution of the optical path of the laser beam can be simplified without causing deviation in alignment of the optical path of the laser beam.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a laser/punch compound processing machine which is a turret punch press with a laser processing function added thereto.

(Prior Art) Conventionally, a laser processing head has been attached to the frame or upper turret of a turret punch press to perform punching and laser processing.
A punch multi-tasking machine has been developed.

In a laser/punch multitasking machine, in order to avoid the effects of severe vibration during punching, the laser oscillator is installed at a distance from the upper and lower turrets of the turret punch press, and the laser beam from the laser oscillator is , is generally guided to a laser processing head via a plurality of pend mirrors.

(Problems to be Solved by the Invention) Conventionally, the optical path of the laser beam from the laser oscillator to the laser processing head is structured by a plurality of pend mirrors, so the work of adjusting (aligning) the optical path at the initial stage of assembly is difficult. In addition to being cumbersome, the mirror mount that supports the pendor mirror is susceptible to vibration and heat, and the alignment of the optical path of the laser beam is likely to be distorted.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention provides a turret punch press with a laser beam receiving section connected to a laser processing head mounted on an upper turret, and a laser beam receiving section separated from the turret. and a laser beam irradiation section that irradiates the laser beam receiving section with a laser beam from a laser oscillator provided as a laser oscillator, and a hollow waveguide is used to guide the laser beam to the receiving section.

(Function) According to the above structure, when the upper turret is rotated and the laser processing head supported by the upper turret is positioned below the striker, the laser beam receiving part provided on the upper turret and the laser beam receiving part provided on the frame side The laser beam irradiation section faces the laser beam irradiation section, and the laser beam irradiated from the laser beam irradiation section is guided to the laser processing head via the laser beam receiving section. At this time, since a hollow waveguide is used in the laser beam receiving section, the diameter is larger than that of the optical fiber on the irradiation section side, so the laser beam can be easily transmitted.

In addition, since the laser beam oscillator and laser beam irradiation section, and the laser beam reception section and laser processing head are connected through flexible waveguides, the alignment of the laser beam optical path is important. This does not occur, and the optical path structure of the laser beam can be simplified.

(Embodiment) Referring to FIG. 2, a laser/punch composite processing machine generally designated by the reference numeral 1 is a combination of a turret punch press 3 and a laser processing machine 4.

In this embodiment, the turret punch press 3 has a gate-shaped frame in which side frames 7.9 are erected on both sides of the base 5, and the upper frame 11 is supported by the side frames 7.9. There is.

The turret punch press 3 includes upper and lower turrets 17 and 19 that removably support a large number of bunches 13 and dies 15.
It is prepared for self-made quadruple rotation horizontally with the top and bottom facing each other. Also,
Turret punch press 3 has upper and lower turrets 17.19
Punch 1 indexed and positioned in the processing area by the rotation of
A ram 23 equipped with a striker 21 for striking the drum 3 is provided so as to be movable up and down, and this ram 23 is configured to be moved up and down by the rotation of an eccentric portion of an eccentric shaft 25 via a connecting rod.

Further, the turret punch press 3 moves the plate-shaped workpiece W placed on the table 27 in the X-axis and Y-axis directions, and moves the workpiece W against the punch and die in the processing area.
A workpiece positioning device 29 is provided for moving and positioning the workpiece. These two workpiece positioning devices are well known;
To roughly explain its configuration, the two workpiece positioning devices include a carriage base 33 that is guided by a guide rail 31 in the Y-axis direction and is movable in the Y-axis direction, and a carriage base 33 that is movable in the Y-axis direction and Guide rail 3
5, and a plurality of three work clamps that are attached to the carriage 37 and are capable of gripping the edge of the workpiece W.

With the above configuration, in the turret punch press 3, the upper and lower turrets 17 and 19 are rotated to move the desired punches 13 and dies 15 into the processing area (strike 2
1). Further, the two workpiece positioning devices position the part of the workbead W to be processed at the processing position by the bunch 13 and die 15 indexed in the processing area. Thereafter, the ram is lowered and the punch 13 is struck by the striker 21, thereby punching the workpiece W.

The turret punch press 3 having the above configuration is well known, but in this embodiment, in order to perform laser processing,
As will be described later, the upper turret 17 of the turret punch press 3 is equipped with a laser processing head 41 (see FIG. 1).
is installed.

That is, the laser processing machine 4 includes a laser oscillator 43 that oscillates a laser beam, the laser processing head 41, and an optical system 45 that connects the laser oscillator 43 and the laser processing head 41.

As for the structure of the laser processing head 41, it is desirable to have the following structure, for example. That is, an inner cylinder 49 is vertically movably housed in a cylindrical outer cylinder 47 that can be attached to and removed from the punch mounting hole 17H of the upper turret 17, and a tapered part 47T formed on the inner circumferential surface of the lower end of the outer cylinder 47 is provided. By engaging the tapered portion 49T formed on the outer peripheral surface of the lower end of the inner cylinder 49, the axes of the outer cylinder 47 and the inner cylinder 49 are aligned. In order to support the inner cylinder 49 within the outer cylinder 47, shock absorbers 51U and 51L, such as air tubes, are provided between the steps formed at the upper and lower parts of the inner cylinder 49 and the steps of the outer cylinder 47, respectively. is used to prevent vibrations from being transmitted from the outer cylinder 47 to the inner cylinder 49.

Further, upper and lower air tubes 51U, 51. The pressure inside L can be adjusted individually via a pressure reducing valve, etc., and the outer cylinder 4
When engaging the tapered part 49T of the inner cylinder 49 with the tapered part 47T of
9 is pressed and fixed to the outer cylinder 47, and the tapered part 4 of the outer cylinder 47
When detaching the Taber H49T of the inner cylinder 49 from the inner cylinder 7T, the pressure in the upper air tube 51U is lower than the pressure in the lower air tube 51L, and the inner cylinder 49 is supported in a floating state from the outer cylinder 47. shall be.

Then, an elevating body 57 holding a nozzle 53, a condensing lens 55, and the like is provided in a self-manufactured manner so as to be vertically adjustable along a guide bar 59 provided in the inner cylinder 49.

Further, a holder 61 is provided close to the condensing lens 55, and the holder 61 supports the vicinity of the tip of the hollow waveguide 63 whose tip is directed toward the condensing lens 55, and supports the base of the hollow waveguide 63. is supported by a laser beam receiving portion 65 provided on the upper turret 17.

The hollow waveguide 63 is, for example, a thin flexible nickel pipe whose inner peripheral surface is coated with a germanium thin film to increase the reflectance of the inner surface.

It is desirable that the receiving port 65M of the receiving portion 65 be formed into a tapered shape as shown in the figure.

The laser beam receiving section 65 includes the laser processing head 41
is provided at a position facing the laser beam irradiation unit 67 provided on the frame side of the turret punch press 3 when the striker 21 is indexed and positioned below the striker 21 .

The laser beam irradiation unit 67 is provided with a slide block 71 that is guided by six guide members provided on the frame and is movable in directions approaching and away from the laser beam receiving unit 65. For reciprocating movement, a reciprocating device 73, such as an air cylinder, is provided.

Furthermore, the slide block 71 includes a laser oscillator 4.
The tip of a hollow waveguide or optical fiber 75 whose base side is connected to the laser oscillator 43 side is held in order to receive the laser beam oscillated by the optical fiber 75 . The diameter of this optical fiber 75 is set smaller than the diameter of the receiving port 65M of the receiving portion 65. When brought close together by the action of the reciprocating actuator 73, the distance D between the end faces of the receiving portion 65 and the optical fiber 75 is less than 1 tap, and the distance is such that they almost contact each other.

With the above configuration, in order to perform laser processing by indexing and positioning the laser processing head 41 mounted on the upper turret 17 in the processing area, the optical fiber 75 connected to the laser oscillator 43 side and the receiving section connected to the laser processing head 41 side are used. 65 and the receiving port 65M are held in a state extremely close to each other,
By transmitting the laser beam oscillated by the laser oscillator 43, laser processing can be performed.

Note that various configurations can be adopted for ejecting the assist gas from the laser processing head 41, so a detailed explanation of the configuration will be omitted.

Further, the present invention is not limited to the above-described embodiments, but can be implemented in other embodiments by making appropriate changes. For example, it is also possible to adopt a configuration in which the receiving port 65M in the laser beam receiving section 65 faces upward, and the laser beam is emitted downward from the optical fiber 75 in the laser beam irradiating section 67 provided above.

Furthermore, depending on the case, it is also possible to keep the slide block 71 in the laser beam irradiation section 67 in a fixed state.

〔Effect of the invention〕

As understood from the above description of the embodiments, according to the present invention, the laser oscillator 43 and the laser beam irradiation section 67 are connected via the optical fiber 75, and the laser beam irradiation section 67 emits a laser beam. The laser beam receiving section 65 that receives the laser beam and the laser processing head 41 are connected via the hollow waveguide 63, and the receiving port on the receiving section side is configured to have a larger diameter than the optical fiber 75 on the irradiating section side. The structure of the optical path of the laser beam is simple, and the laser beam can be transmitted reliably.

[Brief explanation of the drawing]

11 The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional explanatory view showing the main parts, and FIG. 2 is a front view showing the overall configuration. 17... Upper turret 41... Laser processing head 65... Laser beam receiving section 67... Laser beam irradiating section 75... Optical fiber

Claims (1)

[Claims] a laser beam receiving part connected to a laser processing head attached to an upper turret of the turret punch press;
and a laser beam irradiation section that irradiates the laser beam receiving section with a laser beam from a laser oscillator provided apart from the turret, and using a hollow waveguide that guides the laser beam to the receiving section. A laser/punch multi-tasking machine featuring the following.