JPH01218789A - Laser beam machining method - Google Patents

Abstract

PURPOSE:To eliminate the loss of the time required for laser beam machining and to improve a working efficiency by forming pentaaxial control data by an external device and feeding the formed data via a medium to a laser beam device, then executing the laser beam machining. CONSTITUTION:All the teaching operations of the pentaaxial control data of orthogonal triaxes X, Y, Z and rotating biaxes alpha, beta are executed by the external device 2. The data on various processing conditions are formed by the external device 2 as well. These sets of the formed data are fed as they are via the medium 3 to the laser beam device 1, by which the laser beam machining is executed. Since the teaching operation and the laser beam machinin are executable in parallel by the devices separate from each other, the laser beam device 1 is usable as the machine to be exclusively used for the machining.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a three-dimensional laser processing method using simultaneous five-axis control consisting of three orthogonal axes and two rotational axes.

(Prior art) In conventional three-dimensional laser processing, when direct teaching is used as a means of creating processing data, teaching and this teaching are performed using both a teaching head and a processing head in the same laser processing device. Three-dimensional laser processing was performed based on data.

(Problem to be solved by the invention) However, using a laser processing machine with a teaching function not only complicates the equipment, but also requires time for teaching work, which reduces the operating time for laser cutting. , which reduced laser processing efficiency.

On the other hand, using an external device such as a three-dimensional or two-dimensional CAD/CAM, the position data of the X, Y, and Z axes is created manually using graphics using a CRT, and is transmitted via a medium such as an NC tape or an IC card. Another method is to send the created data to a laser processing device. In this case, the external device can create X, Y, and Z' position data, but each rotation angle data of the two rotational axes...β (Laser halo 1.±) It had to be created by direct teaching on the equipment side.

Therefore, this method also requires teaching work in the laser processing device, which lowers the operating rate for the original laser cutting.

(Means for Solving the Problems) Therefore, the present invention has an external device perform all the teaching work of 5-axis control data of three orthogonal axes X, Y, Z and two rotational axes α and β, and furthermore, Not only 5-axis control data but also various machining condition data are created by an external device, and these created data are directly sent to the laser processing device via a medium to perform laser processing, making it possible to combine teaching work and laser processing. Because they can be performed in parallel using separate equipment, there is no time loss on the laser processing equipment side, and data creation and laser processing can be performed efficiently.Furthermore, the laser processing equipment can be used as a dedicated cutting machine. The aim is to dramatically improve the operating rate of

(Example) 5 Hereinafter, specific embodiments of the invention will be described with reference to the drawings.

Figure 1 is a block diagram showing the laser machining system, Figure 2 is a control axis configuration diagram of a 5-axis laser processing machine, Figure 3 is an axis configuration diagram of a three-dimensional measuring robot as a data creation device, Figure 4 is a block diagram showing the above data creation system.
FIG. 5 is a diagram showing the operation surface of the remote control box in FIG. 4.

In FIG. 1, 1 is a laser processing device, 2 is a data creation device as an external device, and 3 is a medium for transmitting data created by this data creation device 2 to the laser processing device 1.

The laser processing device 1 includes an input/output device 4, an editing device 5, a control device 6, and a 5-axis laser processing machine 7.

The 5-axis laser processing machine 7, as shown in FIG.
It performs laser cutting of a three-dimensional workpiece W, etc.

Note that the Z axis is located in a direction perpendicular to the paper surface.

The X, Y, and Z axes are linear feed axes for controlling the three-dimensional coordinate position of the laser head 8, and the α and β axes are provided in the laser head 8 to change the angular posture of the head 8. Laser irradiation direction on the workpiece W processing surface (C-axis direction)
This is the rotation axis for controlling the Further, this head 8 has a one-point directional head configuration in which the position of the focal point of the laser beam is always constant regardless of the rotation of the α and β axes.

And the laser processing machine 7 with x as position data
, Y, Z, and attitude data, and the five axes are simultaneously controlled by five control data of rotation angles α and β of the two rotation axes.

These five control data X, Y, Z, α, and β are created by the data creation device 2 described above.

The data creation device 2 uses a three-dimensional measuring robot 10 equipped with a sub-head 9, as shown in FIG. 3, for example.

This three-dimensional measurement robot 10 has the same five-axis configuration as the laser processing machine 7 described above, and the shape of the measurement head 9 is substantially the same as the laser head 8 described above. Note that the Z axis is located in a direction perpendicular to the paper surface.

That is, encoders 1.12.13.14.15 are provided for measuring the positions or rotational angles of three orthogonal axes, X, Y, and Z axes, and two rotational axes, R and β axes. The displacement of each axis can be measured.

As shown in FIG. 4, the measurement data x, y, z, ,
β is sent to the control unit 17 through the relay box 16 and through data processing specific to the measurement head 9.
It is digitally displayed on the display unit 18. At the same time, paper is output from the printer 19 as required.

Furthermore, this control unit 17 includes an operation surface 2.
0 is connected to a remote control box 20 that is removable from the frame. As shown in FIG. 5, the operation surface of the sumo control box 20 is provided with a power key 21, a numeric keypad 22, a character key 23, and various function keys 24, which allow remote control of each axis drive unit of the measuring robot 10. You can input data for use and for output to the outside.

Furthermore, here, the above measurement data X, Y, Z, α, β
Input the processing condition code set corresponding to various processing conditions for laser processing and its command value together with the value.

For example, feed speed is F..., laser power is B..., output port number is M..., linear interpolation, circular interpolation, etc. is G...
It is possible to input using keys such as .

As a result, NC data as laser processing control data is created. This NC data can be stored in various media 3, such as paper tape, IC card, or floppy disk, by various output means.

In this way, the NC data created by the external data creation device 2 is transferred to the laser processing device 1 via the medium 3.
It becomes possible to transmit to. It is also possible to use wires or communication.

In the laser processing apparatus 1, the input/output device 4 includes a paper tape reader when the medium 3 is a paper tape, and an IC card loader when the medium 3 is an IC card.
If it is a floppy disk, a floppy disk is used.

In this way, the data read from the medium 3 by the input/output device 4 is sent to the editing device 5 and the control device 6 and converted into processing data for the laser processing machine 7, and the laser processing machine 7 performs the processing described above. Predetermined laser processing is automatically performed using 5-axis simultaneous control while being controlled based on data.

Therefore, by "2 3D measurement robot] 0,
By capturing 5-axis data at each measurement point while adjusting the posture of the measurement head 9 to always maintain it in the normal direction to the workpiece processing surface, it is possible to adjust the attitude of the measurement head 9 to the workpiece W processing surface required for three-dimensional laser processing. In addition to the control data α and β for the two axes of rotation to always perform laser irradiation from the normal direction,
Direct teaching for three-dimensional laser processing can be easily performed.

Furthermore, by simultaneously creating various machining condition data such as the head feed speed for each machining position along with the X, Y, Z, α, and β control data, all the control data necessary for laser machining is created by an external device. On the laser processing machine 7 side, laser processing can be performed immediately by simply importing the data.

(Effects of the Invention) According to the present invention, in three-dimensional laser processing where five axes are controlled simultaneously, including three orthogonal axes and two rotational axes, the control data for the five axes is created by an external device, and the created By simply sending the data to the laser processing device via a medium, the laser processing device can take in the data as it is and perform 5-axis laser processing.

For example, by using a three-dimensional measurement robot with almost the same axis configuration as the five-axis laser processing machine as the external device mentioned above, it is possible to easily perform laser processing by reading five-axis data of three orthogonal axes and two rotational axes through direct teaching. control data can be created.

In addition to the 5-axis data mentioned above, by simultaneously creating various machining condition data such as feed rate commands and various commands using an external device, conditions can be judged while actually observing the teaching process. It is possible to set conditions suitable for the shape of the workpiece, and creating programs is extremely easy.

In this way, the teaching for 5-axis laser processing and the actual laser processing can be efficiently performed in parallel on separate devices, and there is no time loss required for laser processing on the laser processing device side, making it easier to perform laser cutting. The operating rate can be significantly improved.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the laser machining system, Figure 2 is a control axis configuration diagram of a 5-axis laser processing machine, Figure 3 is an axis configuration diagram of a three-dimensional measuring robot as a data creation device, and Figure 4 is the same as above. FIG. 5 is a block diagram showing the data creation system. FIG. 5 is a diagram showing the operation surface of the remote control box in FIG. 4. 1. Laser processing device, 2. Data creation device as external device, 3. Medium, 7. 5-axis laser processing machine, 8...
Laser head, 9...Measuring head, 10...Three-dimensional measurement robot, X, Y, Z...3 orthogonal axes, α, β...
- 2 axes of rotation. Patent Applicant Nippei Toyama Co., Ltd. Procedural Amendment (Method) Commissioner of the Patent Office Kunio Ogawa 1, Indication of Case Patent Application No. 45290 of 1988
, 2. Title of the invention Laser processing method 3. Relationship with the person making the amendment case Patent applicant location 03-435=4701

Claims (3)

[Claims] (1) In three-dimensional laser processing using a five-axis laser processing machine that has three orthogonal axes and two rotational axes and is controlled simultaneously in five axes, the five-axis control data is created in advance by an external device,
The data created by this external device is transmitted through the medium,
A laser processing method characterized by feeding the laser into a laser processing device to perform laser processing. (2) Claim 1 characterized in that the 5-axis control data and various machining condition data are created simultaneously by an external device.
Laser processing method described. (3) The laser processing method according to Claims 1 and 2, characterized in that the external device is a three-dimensional measurement robot having three orthogonal axes and two rotational axes that are substantially the same as the five-axis laser processing machine.