JPH0318995B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a machine tool, and more particularly to a machine tool having a laser cutting machine.

BACKGROUND ART The laser cutting machine described above can cut pieces of various shapes and sizes, and by adding the laser cutting machine to a conventional machine tool such as a punch press machine, processing into a predetermined shape can be performed, for example. By using a laser cutting machine to quickly perform processing that cannot be performed using conventional machine tools, it is possible to quickly respond to various types of processing.
Moreover, when a machine tool such as a punch press machine and a laser cutting machine are provided separately, it is necessary to transport the workpiece between the two, but by providing the laser cutting machine in the machine tool, the transportation means will no longer be necessary.

The laser cutting machine usually consists of a laser oscillator and a processing head that irradiates the workpiece with laser light emitted from the oscillator. The above-mentioned laser oscillator is structurally averse to vibration, and conventionally, the oscillator has been installed at a location separate from the machine tool in order to prevent it from receiving vibrations during machining of the machine tool.

Problems to be Solved by the Invention In the machine tool having the conventional laser cutting machine described above, there is a waste of space to separately install the oscillator, and the connection between the oscillator and the processing head is long, causing reflections. A large number of mirrors, etc. are required to be installed, which increases the cost and requires laborious adjustment of the angle of the reflecting mirrors.

Means for Solving the Problems This invention provides a lower frame fixed to the frame of a machine tool such as a punch press machine or a shearing machine, and a lower frame stacked on the lower frame via a buffer member. A mounting table is provided with an upper frame body, and a laser cutting machine consisting of a laser oscillator and a processing head is installed on the upper frame of the mounting table.

Operation A laser beam is oscillated on a machine tool, and the oscillated laser beam is irradiated onto a workpiece from a processing head to perform laser processing on the workpiece. In addition, when performing the original processing with a machine tool, the laser cutting machine consisting of a laser oscillator and processing head is installed in the upper frame, so vibrations during processing are absorbed by the buffer member and transmitted to the laser cutting machine. Never.

Embodiment FIG. 8 is a diagram schematically showing an embodiment to which the present invention is applied. In this embodiment, a punch press machine 1 is equipped with a laser cutting machine 2.

First, to briefly explain the punch press machine 1, this punch press machine includes an upper frame 4 on which is mounted an upper turret 3 that holds a punch head and a large number of punches, a material supply table 5 and a large number of dies, and a It has an integral structure in which a lower frame 6 on which a lower turret is mounted is connected in a C-shape, and a cover 7 having an inverted trapezoidal shape when viewed from the front is attached to the lower frame 6. The above-mentioned material supply table 5 is provided. The material supply table 5 consists of a central table 5a fixedly supported on the cover 7, and left and right tables 5b and 5c that move back and forth along rails 8 laid on both sides of the cover 7. A carriage 9 is fixed to the front ends of the tables 5b and 5c, and the carriage 9 and the left and right tables 5
b and 5c integrally move back and forth in the Y-axis direction of arrow 11. A cross slide (not shown) is supported in the carriage 9 and moves in parallel along the longitudinal direction of the carriage, the X-axis direction indicated by an arrow 10, and a work holder 1 is mounted on the front surface of the cross slide.
2 is fixed. Reference numeral 13 indicates a plurality of transfer balls provided on the table 5.

Since this punch press machine 1 is configured as described above, the work holder 12 holding the plate material W is
The cross slide moves in the X-axis direction 10 by moving left and right, and moves in the Y-axis direction 11 by moving the carriage 9 and left and right tables 5b and 5c together back and forth.

A mounting table 20 is fixed to the upper frame 4 of the punch press machine 1, and the laser cutting machine 2 is mounted on the mounting table 20. FIG. 1 shows a partially vertical side view of the laser cutting machine 2 and the mounting table 20, and FIG. 2 shows a plan view.

The laser cutting machine 2 has a laser oscillator 21 and a processing head 22 connected together, and the oscillator 21 uses a carbon dioxide laser or the like. The processing head 22 has an elevating part 25 attached to a support part 23 via a bellows-shaped connecting part 24,
A laser beam focused by a lens (not shown) is irradiated from the tip 25a of the elevating portion 25.

Next, the above mounting table 20 will be explained in detail based on FIGS. 1 to 7. This mounting table 20 has an upper frame 30 and a lower frame 31 aligned vertically,
The upper and lower frames 30, 31 are connected by air springs 32, 33, 34 as buffer members.

The upper frame 30 has a rectangular plate 36 and a deformed plate 37 fixed to both longitudinal ends of an upper edge 35 having an L-shaped cross section,
The two plates 36 and 37 are fixed to the lower surface of the laser oscillator 21. In addition, the lower frame 31 has a rectangular plate 39 and a deformed plate 40 fixed to both longitudinal ends of a lower edge 38 which has an L-shaped cross section and is smaller in size than the upper edge 35, the two plates 3
9 and 40 are the upper frames 4 of the punch press machine;
It is fixed via brackets 41 and 42 having ribs. The above two rectangular plates 36,3
9 and the deformation plates 37 and 40 have the same shape.

Convex portions 37 of the two deformed plates 37, 40
The upper and lower ends of the air springs 32, 33, 34 are respectively fixed between the rectangular plates 36, 39 and between the rectangular plates 36, 39.
1 from an air source (not shown), it can be expanded and contracted in the direction of arrow 43.

As shown in FIG. 6, numerals 44 and 45 indicate approximately conical positioning cones screwed onto the deformation plate 40 of the lower frame 31, and 46 and 47 denote positioning cones screwed onto the deformation plate 37 of the upper frame 30. Tapered portions 46a, 47 that fit into the cones 44, 45 attached
It shows a concave body with a. Further, 48 indicates a positioning wedge screwed onto the rectangular plate 39 of the lower frame 31, and the wedge 48 has a substantially trapezoidal cross section as shown in FIG. A concave body 49 having a tapered portion 49a is screwed onto the rectangular plate 36 of the upper frame 30. The positioning cone 44 and the concave body 46, the positioning cone 45 and the concave body 47, and the positioning wedge 48 and the concave body 49 are attached to corresponding and fitting positions.

The operation of this embodiment configured as above will be described below. The punching process will be explained separately for punching using the punch press machine 1 and when using the laser cutting machine 2.

First, during punching, air is evenly supplied from an air source (not shown) to the air springs 32, 33, and 34 to extend the air springs and increase the relative distance d between the upper frame 30 and the lower frame 31. . Upper frame 30 when the spring is expanded
The moving positions of the rectangular plate 36 and the deformable plate 37 are shown by vertical two-dot chain lines in FIG. 1, respectively. At that time, the positioning cones 44 and 45, the concave bodies 46 and 47, the positioning wedge 48 and the concave body 4
The lower frame body 3 is in a floating state and does not come into contact with the lower frame body 3.
Only three air springs 32, 33, and 34 connect the upper frame 31 to the upper frame 31. When the plate material W is punched in the above-mentioned state, the vibrations caused by the punching are transmitted to the upper frame 4, the bracket 41,
Although the vibrations reach the lower frame 31 via the upper frame 30 and the laser cutting machine 2, the vibrations are absorbed by the air springs 32, 33, and 34 and are not transmitted to the upper frame 30 and the laser cutting machine 2.

Next, during laser processing by the laser cutting machine 2, the air springs 32, 33, 34
The upper frame 30 is brought closer to the lower frame 31 by lowering the air pressure supplied to the upper frame 30. At this time, the upper frame 30 is positioned to stop relative to the lower frame 31 by fitting the positioning cones 44 and 45 into the concave bodies 46 and 37, and the positioning wedge 48 into the concave body 49, respectively. Since the contact surfaces between the cone and the concave body and between the wedge and the concave body are each tapered, even if some positional deviation occurs, each concave body moves along the taper and is closely connected to the cone and wedge. Can be fitted and positioned. Further, the positioning member at one end is a wedge 48, and a concave body 4 corresponding to the wedge 48 is provided.
9 is also shaped to fit into the wedge 48, so its position in the direction of arrow 50 in FIG.
The effect of thermal expansion is avoided. On the other hand, the cones 44 and 45 are positioned accurately in all directions, and the two cones are placed in the processing head 22.
Since it is provided on the side, the processing head 22 is positioned at an accurate position with respect to the upper frame 4 of the punch press machine 1 and, in turn, with respect to the plate material W.

As described above, when the processing head 22 is accurately positioned, the bellows-shaped connecting portion 24 is extended to bring the elevating portion 25 close to the plate material W at a certain distance, and the elevating portion 25 is Laser light from the laser oscillator 21 is irradiated onto the sheet metal W from the tip 25a to perform laser processing.

As explained above, according to this embodiment, the vibration generated during punching is absorbed by the mounting table, and the structure is such that the vibration is not transmitted to the laser oscillator. Therefore, failures caused by vibration in the oscillator This eliminates all of this, making it possible to always oscillate stable laser light. Furthermore, when using a laser cutting machine, the cutting machine is accurately positioned with respect to the punch press machine, and laser processing can be performed at a precise position on the sheet metal W.

Although this embodiment shows an example in which a laser cutting machine is mounted on a punch press machine, it is also possible to equip another machine tool with a laser cutting machine or a laser processing machine. Furthermore, the laser cutting machine can be installed at various locations on the machine tool.

Effects of the Invention As explained above, in the present invention, by installing a laser cutting machine consisting of a laser oscillator and a processing head on a mounting table provided in the frame of a machine tool, the installation space can be saved, and , the number of members for connecting the laser oscillator and the processing head in the laser cutting machine is reduced, reducing costs, and various procedures for the above connection and work for adjusting the angle of the reflecting mirror can be omitted. Ta. Furthermore, since the vibration that occurs when the machine tool performs its original processing work is absorbed by the mounting table, there is no failure of the laser oscillator due to vibration, and stable laser light oscillation is possible at all times.

[Brief explanation of drawings]

1 to 8 are diagrams showing an embodiment of the present invention, in which FIG. 1 is a partially vertical side view showing a laser cutting machine and a mounting table on which the cutting machine is placed, and FIG. 2 is a plan view. 3 to 7 are diagrams showing the above-mentioned mounting table, FIG. 3 is a plan view, FIG. 4 is a sectional view taken along line A-A in FIG. 3, and FIG. 5 is a B-- A cross-sectional view taken along the line B, FIG. 6 is a cross-sectional view showing a cone provided on the above-mentioned mounting table and a concave body that fits into the cone, and FIG. 7 shows a wedge similarly provided on the above-mentioned mounting table and a concave body that fits into the wedge. a perspective view showing a concave body;
FIG. 8 is a perspective view schematically showing a punch press machine equipped with a laser cutting machine. 1... Punch press machine, 2... Laser cutting machine, 4... Upper frame, 20... Mounting table, 21
... Laser oscillator, 22 ... Processing head.

Claims (1)

[Claims] 1. A mounting table consisting of a lower frame fixed to the frame and an upper frame stacked on top of the lower frame via a buffer member is provided on the frame of the machine tool, and the upper frame of the mounting table is A machine tool equipped with a laser cutting machine comprising a laser oscillator and a processing head.