KR101384766B1 - machining center for CNC laser machining - Google Patents

Abstract

The present invention relates to a CNC laser machining complex machining center, comprising: a laser oscillator for generating laser light; A hexahedron housing that can be attached to and detached from the CNC machining center head; An abachuck mounted on the housing upper surface and connected to the machining center head; A galvano scanner connected to the laser oscillator and the housing side and fixed to an inner center of the housing to control the laser light; And a lens module spaced apart from the galvano scanner at a predetermined distance and mounted on the lower surface of the housing to focus the laser light on the workpiece.
As described above, the present invention can provide a CNC laser processing complex machining center capable of precisely performing machining and laser processing through integrated control.
In addition, it is possible to easily perform the mechanical processing and the processing using a laser can not only perform the laser processing in combination with the existing mechanical processing, but also provides a composite processing machine that can increase the energy efficiency.

Description

Machining center for CNC laser machining

The present invention relates to a CNC machining center, and more particularly, to a CNC laser machining complex machining center capable of machining and laser processing.

Laser processing machines are classified according to the type of laser generating materials. Industrially used laser processing machines usually use CO2 lasers using CO2, N, and He gas mixtures as laser generating materials, and Nd: YAG as laser generating materials. Nd: YAG laser is mainly used.

The Nd: YAG laser usually generates a beam having a wavelength of 1.06 mu m, and is mainly used for welding of pieces of metal or welding of sheet metal. And CO ₂ laser generates a beam having a wavelength of 10.6㎛ relatively longer than Nd: YAG laser, and mainly uses a non-metal material for engraving or cutting.

In other words, Nd: YAG laser is mainly used for the processing of metal materials, CO ₂ laser is mainly used for non-metal materials such as plastic or wood. This is because the laser equipment used for engraving has a structure in which the lens part is open and cannot inject an auxiliary gas used for cutting metal, so the laser equipment for engraving cannot be used for cutting and is only used for engraving.

Therefore, in order to process a product including a engraving process and a cutting process together, conventionally, a laser device for engraving CO ₂ Since laser defense and Nd: YAG laser equipment, which is a cutting laser equipment, must be provided separately, production costs increase.

In particular, when cutting and engraving are to be performed separately in separate laser equipment, the product must be set again for each operation. Therefore, the reference position is set when the product after one process (for example, cutting process) is transferred to the next process (engraving process) and set. There is a problem that can cause a defect, and if you pay close attention to the setting to prevent this quality defect, the production efficiency is lowered.

1 relates to a combination laser processing machine capable of performing both conventional cutting and engraving operations, and has a processing head 30 for engraving on a path of a beam B emitted from a laser generator 10 installed on a frame 1. Is installed, and a beam switch 50 for refracting the beam B irradiated toward the processing head 30 for engraving work 90 degrees in the horizontal direction is installed, and the ice beam B refracted by the beam switch 50 is installed. A bending block 60 for refracting the beam B 90 degrees in a vertical direction is installed on a path of the beam, and a cutting head 40 is provided at a vertical lower portion of the bending block 60 to provide the beam switch. 50) by cutting the beam (B) emitted from the laser generator 10 toward the engraving head 30 or the cutting head 40 for cutting or engraving the workpiece loaded on one table (2) Combined laser cutting machine for cutting and engraving .

As described above, the conventional compound laser machine is limited in its type and capability in various machining operations, and has a problem in that it has a limitation in performing comprehensive machining operations. On the other hand, various types of machines are used in the CNC machining center for comprehensive machining. Although there is an advantage in that it can be processed, laser processing with excellent stability by precision and non-contact processing has a disadvantage in that it is difficult to combine.

An object of the present invention to solve the above problems is to provide a CNC complex machining center that can perform a laser (LASER) processing in combination with the existing mechanical processing in a simple and easy configuration, and can increase the energy efficiency to be.

A feature of the present invention for solving the above problems is a CNC machining center comprising: a laser oscillator for generating laser light; A hexahedron housing that can be attached to and detached from the CNC machining center head; An abachuck mounted on the housing upper surface and connected to the machining center head; A galvano scanner connected to the laser oscillator and the housing side and fixed to an inner center of the housing to control the laser light; And a lens module spaced apart from the galvano scanner at a predetermined distance and mounted on the lower surface of the housing to focus the laser light on the workpiece.

Here, the laser oscillator, the galvano scanner and the CNC-type DAQ device for controlling the integrated CNC machining center is preferably further included, and the housing is preferably made of a transparent plastic material.

In addition, preferably, the Aba chuck may have a wide tapered shape, and the galvano scanner controls the rotation angle of the mirror on which the laser light is reflected by an electrical signal to control the direction and shape of the laser light. It may be.

In addition, the lens module may include at least one of a lens mount mounted on the lower surface of the case, a concave lens and a convex lens mounted on the lens mount, and are connected to the CNC board of the machining center. Preferably, a driver board is mounted on the side of the housing.

As described above, the present invention can provide a CNC laser processing complex machining center capable of precisely performing machining and laser processing through integrated control.

In addition, it is possible to easily perform the mechanical processing and the processing using a laser can not only perform the laser processing in combination with the existing mechanical processing, but also provides a complex processing machine that can increase the energy efficiency.

1 is a view showing a compound laser processing machine capable of performing both conventional cutting and engraving operations,
Figure 2 is a photograph showing the configuration of a CNC laser machining complex machining center according to an embodiment of the present invention,
3 is a hexahedral housing (a) of Fig. 3 (a), abachuck (a) (b) and a red module (c) of the configuration of the CNC laser machining complex machining center according to an embodiment of the present invention ),
4 is a view showing an example of the housing fastening structure of the CNC laser machining complex machining center according to an embodiment of the present invention,
5 is a photograph showing a galvano scanner which is a component of a CNC laser machining complex machining center according to an embodiment of the present invention (FIG. 5 (a)), and a photograph showing the housing fastening structure (FIG. 5 (b)). ego,
6 is a laser shape control program applied to a CNC laser machining complex machining center according to an embodiment of the present invention, a circular control block diagram (Fig. 6 (a)) created with LabVIEW and a circular control front panel (Fig. 6). (B)) is a view showing
FIG. 7 is an interlocking control program applied to a CNC laser machining complex machining center according to an embodiment of the present invention, including an interlocking control block diagram of LabVIEW and CNC (FIG. 7A) and a LabVIEW interlocking control front panel. (B) of FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish it, will be described with reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. The embodiments are provided so that those skilled in the art can easily carry out the technical idea of the present invention to those skilled in the art.

In the drawings, embodiments of the present invention are not limited to the specific forms shown and are exaggerated for clarity. Also, the same reference numerals denote the same components throughout the specification.

The expression "and / or" is used herein to mean including at least one of the elements listed before and after. Also, singular forms include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations and elements referred to in the specification as " comprises "or" comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

Figure 2 is a photograph showing the configuration of a CNC laser machining complex machining center according to an embodiment of the present invention.

As shown in FIG. 2, a CNC laser processing complex machining center according to an embodiment of the present invention includes a laser oscillator for generating laser light; A hexahedral housing 200 that can be attached to and detached from the CNC machining center head; An abachuck 100 mounted on an upper surface of the housing 200 and connected to a machining center head; A galvano scanner 350 connected to the laser oscillator through a side of the housing 200 and fixed to an inner center of the housing 200 to control the laser light; And a lens module 400 spaced apart from the galvano scanner 350 at a predetermined distance and mounted on a lower surface of the housing 200 to focus the laser light on a workpiece.

As described above, the embodiment of the present invention has a disadvantage in that the laser processing machine and the machining center are performed independently of each other to perform a separate process, and thus the continuity of the process is reduced, and expensive equipment is required for the double process, resulting in a very high process step. As shown in the drawings, a structure and a structure for easily mounting a laser processing machine in a conventional machining center are proposed, and a laser machining complex machining center capable of integrally controlling a CNC machining center and a laser processing machine is proposed.

Looking at the overall configuration, as a laser set that can be mounted in a CNC machining center, it generates a galvanometer (350) (Galvanometer), a Galvanometer drive board, a lens, an Ava Chuck (100) and a hexahedral housing 200 and lasers installed thereon. It consists of a laser oscillator.

As described above, in the embodiment of the present invention, in order to use the laser processing apparatus as a machining tool of the CNC machining center, each component is connected through the hexahedral housing 200 to design the entire apparatus as one module, and the housing ( 200) is formed into a structure that is mounted on the CNC machining center head.

After the entire system hardware is configured, the software (LabVIEW) is used to control the position of the entire system, and the basic figure circles, zigzag, and squares are programmed using LabVIEW to process any shape using the Laser, and CNC. By working with LabVIEW for compatibility with and DAQ, it is possible to provide a CNC laser machining complex machining center that can perform machining operations with a single integrated control.

3 is a hexahedral housing (FIG. 3 (a)), an Ava Chuck 100 (FIG. 3 (b)), and a reds module (FIG. 3) of a CNC laser machining complex machining center according to an exemplary embodiment of the present invention. (c)) is a figure which shows.

As shown in Fig. 3A, in order to use the laser device as a processing tool of a CNC machining center, it is preferable to use a hexahedral housing. The hexahedral housing 200 serves to fix and protect a hardware part with a case in which an Avachuck 100, a lens, a galvanometer scanner 350, and the like are mounted.

In the embodiment of the present invention shown in Figure 3 used for the thickness of 10mm acrylic. Aluminum or metal may be used, but since the weight of itself is large, the inertia is large, and thus, it is preferable to use a light and transparent plastic material because it is greatly affected by the change in acceleration, and the precision of processing is inferior.

In addition, using a hexahedron is easy to install a variety of configurations, and can be installed separately on each side of the Ava Chuck 100, the lens, the galvano scanner 350 and the laser oscillator connection, which is an essential configuration, system stability and This increases the degree of design freedom. And the use of a transparent material can be clearly confirmed the operating process inside the housing 200, because there is an advantage that the operator can quickly monitor and cope with malfunctions.

As shown in FIG. 3 (b), in order to mount the housing 200 on a CNC machining center, the abbachuck 100 is required as an intermediate connection tool. Since the Avachuck 100 serves as an intermediate connector for joining the CNC machining center and the tool, it is necessary to mount the Avachuck 100 suitable for the type of the CNC machining center. Of course. According to the head connection structure of a general CNC machining center, the shape is preferably a tapered shape with a wide bottom.

As shown in (c) of FIG. 3, the lens module 400 is mounted on the lower surface of the hexahedral housing 200, and is a component capable of focusing a laser generated through a laser oscillator and scanning the workpiece. It consists of a transparent lens made by grinding crystal or glass to collect or disperse light, and a mount to which the lens is mounted.

In an embodiment of the present invention, at least one of a concave lens and a convex lens may be used. In an embodiment of the present invention, a convex lens is used. Since the light passing through the convex lens is collected at one point, and the light entering the inlet of the convex lens has a characteristic of moving vertically from the exit of the lens, the galvano scanner 350 controls the position of the laser light to process the workpiece immediately. If so, the laser light enters the workpiece at an angle, but by using the characteristic of the convex lens as described above, it is possible to shoot the laser light perpendicular to the surface of the workpiece.

In addition, the laser oscillator is a device for generating a laser light and is connected to the galvano scanner 350 through the side of the housing from the outside of the housing 200 through an optical fiber or the like, and various kinds of outputs and wavelengths vary depending on the type of processing. of Of course, a laser oscillator can be mounted.

Figure 4 is a view showing an example of the fastening structure of the housing 200 of the CNC machining center machining center according to an embodiment of the present invention, Figure 4 (a) is connected to the Ava Chuck 100 and the lens module 400 One housing 200 is an assembly, and FIG. 4B is a diagram illustrating an assembly in which a driver board 355 is connected to a side surface of the housing 200.

As shown in Figure 4 (a), the upper surface of the housing to form a through hole in the center connecting the Ava Chuck 100, the lower surface to focus the laser light to the lens module ( 400) is mounted. That is, as shown in Figure 3 (a), to form a through hole of the appropriate shape to easily mount the Ava Chuck 100 and the lens module 400 on the upper and lower surfaces, and other components Through holes may be formed in various shapes appropriately on each side so as to be mounted.

And as shown in Figure 4 (b), the driver board 355 to the side of the housing in order to connect the control board of the CNC machining center and the control board for controlling the galvano scanner 350 to perform integrated control It is preferable to mount on.

FIG. 5 is a photograph showing a galvano scanner 350 which is a component of a CNC laser machining complex machining center according to an embodiment of the present invention (FIG. 5A), and a fastening structure of the housing 200 (FIG. 5 ( b)) is a photograph.

As a control device for controlling the direction or shape of the laser beam to irradiate the workpiece, the structure of the galvano scanner 350 generally has a coil fixed to a central section of the integrally penetrating oscillation shaft. A pair of bearings are arranged adjacent to both ends of the coil, and an angle detector is arranged on one outside thereof, and a mirror mounting part is arranged on the other side thereof. That is, the galvano scanner 350 is a device in which an integrated control unit of a CNC machining center such as a DAQ device determines a position of a laser light for processing and receives a signal, thereby changing an angle of a mirror to change an irradiation angle of the laser light. Not shown)

As shown in FIG. 5B, the galvano scanner 350 is fixedly installed at the inner center of the housing 200 at a predetermined distance from the lens module 400 and installed at the outer side of the housing 200. The wiring is connected to the driver board 355 to receive a control signal. And, by connecting the laser oscillator and the optical fiber cable through the housing 200 side, by receiving the laser light by controlling the direction to the lens of the lens module 400, it is possible to precisely and quickly perform the laser processing.

And as another configuration of the CNC laser machining complex machining center according to an embodiment of the present invention, it is preferable to further include a USB type DAQ equipment, the DAQ equipment inputs and outputs signals such as laser oscillator, galvano scanner 350, Used to control each component, it is an integrated control device by collecting data. For example, after programming with LabVIEW and input to the USB-6211, the USB-6211 outputs an analog voltage value to the galvano scanner 350.

Hereinafter, an application example of software for integrated control of a CNC laser machining complex machining center according to an embodiment of the present invention will be described. In other words, you can use LabVIEW to signal to DAQ to program for compatibility with laser oscillators, galvanometers (350) and CNC machine tools.

6 is a laser shape control program applied to a CNC laser machining complex machining center according to an embodiment of the present invention, a circular control block diagram (Fig. 6 (a)) created with LabVIEW and a circular control front panel (Fig. 6). (B)) is shown.

As shown in FIG. 6, when a programming block diagram (FIG. 6A) is used to perform programming using LabVIEW as a program for controlling the shape of a circle, a for loop is used to limit the total number of times the program is run. In the control of the galvanometer scanner 350 (Galvanometer), the angle of the mirror changes with the voltage according to the voltage, and operates up to 0V to 10V, so the angle varies from 0 ° to 20 °.

When the X and Y axes of the galvanometer scanner 350 (Galvanometer) are simultaneously controlled and the sin and cos waves are simultaneously output, the reflector is circular. When the operator looks at the front panel (FIG. 6B) to adjust the size of the circle, the operator turns the dial indicated by the radius of the circle. Here, a value between 0 and 10 is set, which indicates the voltage, through which the size of the circle can be freely adjusted.

You can also adjust the laser's feed rate, which is achieved by adjusting the period of sin and cos waves of the laser by turning the dial, which is called the speed of the point, to adjust the time it takes to draw a circle once. The part shown as working time on the bottom right of the front panel displays the time from program start to completion and can be used as information needed to make G-code when used in conjunction with CNC machining center.

FIG. 7 is an interlocking control program applied to a CNC laser machining complex machining center according to an embodiment of the present invention, including an interlocking control block diagram of LabVIEW and CNC (FIG. 7A) and a LabVIEW interlocking control front panel. (B) of FIG.

The program shown in FIG. 7 is a program for compatibility between the CNC machining center and the DAQ, so that the signal from the CNC machining center can be detected as a digital signal so that the program embedded in the DAQ can be selectively processed into the desired program with the desired M-code. It is a program. In the CNC machining center, M-code is wired to use M91 M92 M93 M94, and when M-code M91 is input, it is composed of a casing structure and enters the casing of casing door # 1 and runs the program of one casing.

As such, the present invention can perform integrated control through the CNC machining center and DAQ, thereby enabling the laser processing by attaching the galvano scanner 350 to the CNC machining center, thereby making the CNC laser machining complex machining center It can be provided.

In addition, the laser processing through the galvano scanner 350 is much more energy efficient in terms of energy efficiency than the movement of the workpiece or the machine tool as a whole, and the machining of the machining center and the machining using the laser can be easily performed selectively. It is possible to perform the LASER processing in combination with the existing mechanical processing, it is possible to provide a multi-processing machine to increase the energy efficiency by mounting the galvano scanner 350.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: Avachuck, 200: housing, 350: galvano scanner, 355: driver board,
400: lens module

Claims (7)

In the CNC machining center,
A laser oscillator for generating laser light;
A transparent plastic material, the hexahedral housing detachable from the CNC machining center head;
Aba chuck in the lower tapered shape, which is mounted on the housing upper surface and connected to the machining center head;
A galvano scanner connected to the laser oscillator and the housing side by an optical fiber cable and fixed to an inner center of the housing to control the laser light; And
And a lens mount mounted on the lower surface of the housing, at least one of a concave lens and a convex lens mounted on the lens mount, spaced apart from the galvano scanner at a predetermined distance, and collecting the laser light into a workpiece. Belonging to a lens module;
A driver board installed at an outer side surface of the housing and connected to the CNC board of the machining center and the galvano scanner to transmit a control signal of the CNC board to the galvano scanner; And
CNC laser processing complex machining center comprising a USB type DAQ device for integrated control of the laser oscillator, galvano scanner and CNC machining center.
delete delete delete The method of claim 1,
The galvano scanner,
CNC laser processing complex machining center, characterized in that for controlling the direction and shape of the laser light by controlling the rotation angle of the mirror to which the laser light is reflected by an electrical signal.














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