JPH0910969A - Laser beam machine - Google Patents

Abstract

PURPOSE: To inexpensively provide a laser beam machine with which the finishing of the laser beam processing to be simultaneously executed by plural laser oscillations is made constant. CONSTITUTION: The values of the control voltages f or each of the laser oscillators 42a, 42b,... for executing the laser beam processing with common output powder are stored in respective laser unit boxes 14a, 14b,.... The laser beam machine outputs the corresponding control voltages according to the values of the respective control voltages stored in the laser unit boxes 14a, 14b by respective laser oscillators 42a, 42b,... when the machine receives the processing execution command for commanding the execution of the laser beam processing from a controller box 100 through a machine controller 200. The finishing of the laser beam processing to be simultaneously executed is made constant in such a manner. Then, the need for a a device for embodying feedback control to be used heretofore is eliminated and, therefore, the laser beam machine is inexpensively supplied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser processing machine provided with a plurality of laser oscillators, and more particularly, to control the movement of a work piece using data for driving a frame, and to change the work piece from the plurality of laser oscillators. The present invention relates to a laser processing machine for simultaneously irradiating laser light and performing laser processing for engraving or cutting the work.

[0002]

2. Description of the Related Art Conventionally, an example of a technique relating to a laser processing machine is disclosed in Japanese Patent Publication No. 6-33550.
In the technique disclosed in this publication, in an embroidery sewing machine having a plurality of sewing machine heads, laser light is applied to the surface of a workpiece (skin, cloth, etc.) that is held by the original frame for each sewing machine head. The laser heads that can irradiate the Therefore, by irradiating the laser beam from each laser head while controlling the movement of the original frame in both the X-axis and Y-axis directions after embroidering the work piece by each sewing machine head or before embroidering the work piece, Laser processing (engraving, cutting, etc.) can be performed at a plurality of locations on the workpiece.

It is known that the laser oscillator used in such a laser processing machine has different output characteristics for each laser tube. That is, with respect to the drive signal sent from the laser control device that controls the laser oscillator,
The actual output power is different. For example, even if a drive signal is sent from the laser control device to the laser oscillator so as to output a laser beam having a power of 5 watts, a laser beam having a power of 5.5 watt may actually be output. is there. Therefore, in a laser processing machine equipped with only one laser oscillator, the value of the drive signal may be adjusted in accordance with the output characteristics of the laser tube in order to achieve a constant finish of the workpiece by laser processing. .

However, in a laser processing machine equipped with a plurality of laser oscillators, even if a drive signal is similarly sent from the laser control device to the laser oscillators for control,
Since the output characteristics of each laser tube are different, the finish of the laser-processed workpieces is not uniform. Conventionally, this problem has been solved by using feedback control as a means for adjusting the power output from each laser tube. That is, in response to the drive signal sent from the laser control device, the laser oscillator keeps the power output from the laser tube constant by feedback control.

[0005]

However, since the device for realizing the feedback control is expensive,
The cost of the laser processing machine as a whole was inevitably high. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a laser processing machine that makes the finish of laser processing simultaneously performed by a plurality of laser oscillators constant, at low cost.

[0006]

According to a first aspect of the present invention, there is provided a laser beam machine having a plurality of laser oscillators and performing laser processing simultaneously by the plurality of laser oscillators. The value of the control voltage for generating the common output power is stored, and when the processing execution command for instructing the execution of the laser processing is received, the control voltage corresponding to each stored value of the control voltage is corresponded. It outputs to each of the laser oscillators so that laser processing is simultaneously performed with the common output power.

[0007]

According to the first aspect of the invention, the value of the control voltage output to the laser oscillator is stored in correspondence with each laser oscillator, and laser processing is performed with a common output power. Has been adjusted to do. When a processing execution command is received, a control voltage corresponding to each laser oscillator is output, so that laser processing is performed with a common output power. Therefore, it is possible to make the finish of the laser processing constant. Therefore, it is possible to provide the laser beam machine at a low cost because it is possible to realize the present invention using only an existing device without requiring a device for realizing feedback control as in the conventional case. It will be possible.

[0008]

A laser processing machine according to a second aspect of the present invention is the laser processing machine according to the first aspect, wherein:
The value of each control voltage applied to each laser oscillator is stored so that the common output power level can be specified when processing is performed.

[0009]

According to the second aspect of the present invention, the control voltage output to the laser oscillator differs depending on the level of the common output power for each laser oscillator. These control voltages can specify a common output power level when processing is performed, and are adjusted to perform laser processing with a common output power at each level. Therefore, the common output power can be switched according to the workpiece to perform laser processing simultaneously. Therefore, even if the workpiece is changed, the finish can be made constant.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. In the following embodiments, the present invention is applied to an embroidery sewing machine having a plurality (four) of multi-needle type sewing heads and one laser head corresponding to each sewing machine head. Here, FIG. 1 is a front view of the embroidery sewing machine, and FIG. 2 is a plan view of FIG. As shown in these drawings, four sewing machine heads 22 are provided at equal intervals on the front surface of the sewing machine frame 18 located above the sewing machine table 20. Similarly, on the front surface of the sewing machine frame 18, a total of four laser heads 26 are arranged so as to correspond to the respective sewing machine heads 22.

First, the structure of a sewing machine that performs embroidery will be described. As shown in FIGS. 1 and 2, the sewing machine table 20
An original frame 16 is provided as a holding frame capable of holding a workpiece 16a (sheet-like material such as leather or cloth) described later on the upper surface of the. The original frame 16 can be moved and controlled in both X-axis and Y-axis directions in FIG. 2 based on predetermined movement data (embroidery data). Also, as shown in FIG.
On the horizontal frame of the table leg 30 on the lower surface side of the sewing machine table 20, a hook base 24 is supported at a position corresponding to each sewing machine head 22. Similarly, a steel block plate 28 for receiving laser light is fixed to the front surface of the horizontal frame of the table leg 30 at a position corresponding to each laser head 26.

Further, as shown in FIG. 2, the sewing machine head 22 is a sewing machine arm 2 fixed to the sewing machine frame 18.
A needle bar case is slidably supported on the front surface of the sewing machine 2 in the left-right direction of the sewing machine. In this needle bar case, a plurality of (for example, six) needle bars each having a sewing needle at its lower end are supported so as to be vertically movable. And
The needle bar cases of the sewing machine heads 22 are connected to each other by the connecting rod 10, and the needle bar cases are simultaneously slid in the same direction by a predetermined drive source. It is well known that this selects one of the needle bars and drives only the selected needle bar up and down with the needle.

Next, a laser processing machine for performing laser processing will be described. As shown in FIG. 2, above the laser head 26, the light guide body 12 mounted on the front surface of the bracket is arranged. Further, at the rear position of the sewing machine frame 18, individual laser oscillators 42 corresponding to the respective laser heads 26 are arranged in the front-back direction of the sewing machine. These laser oscillators 42 are carbon dioxide gas lasers, which are one of gas lasers that can continuously emit laser light. Further, in front of each laser oscillator 42, a conduit 48 for guiding the laser light emitted from each irradiation nozzle to the guide tube of the light guide body 12 is arranged.

The laser light entering each light guide 12 hits a mirror, is reflected downward, is guided to each hole of the lens rack in the laser head 26, and the workpiece 16a is focused at the focus position by the lens therein. Laser processing (specifically, engraving or cutting) will be performed. A shield plate that shields the irradiation of the laser light can be attached between the laser oscillator 42 and the conduit 48. Normal,
In addition to laser processing, the shielding plate blocks the irradiation of the laser light individually (or collectively as a whole) to provide a safety measure when the laser light is irradiated from the laser oscillator 42 for some reason. ing.

Here, the laser oscillator 42 is provided on the upper surface of a support plate 44 which is horizontally supported by a support frame 46 fixed to the sewing machine frame 18 and a support frame 40 fixed to the rear end of the sewing machine table 20. It is mounted and fixed. A controller of the laser oscillator 42 is mounted on the lower surface of the support plate 44. Further, as shown in FIG. 1, below the sewing machine table 20, a chiller box 32 as a cooling device for cooling the laser oscillator 42 and a centralized control box for centrally controlling the operation of each component forming the embroidery sewing machine. And 34 are arranged.

Next, as shown in FIGS. 1 and 2, the laser unit box 14 is provided on the front surface of the sewing machine frame 18 at the right position of each laser head 26. The laser unit box 14 includes a test switch for instructing irradiation of laser light when adjusting the output power, an up / down switch for adjusting the output power, a display section for displaying the output power, and a protective cylinder for the laser head 26. An elevating switch for instructing the driving of an air cylinder for elevating and lowering, and other toggle switches are provided.

When the main switch of the embroidery sewing machine having the above-mentioned structure is turned on, the power of each laser oscillator 42 and the chiller box 32 is turned on, preheating of these laser oscillators 42 is started, and the chiller box 3 is started.
The circulating supply of the cooling water from 2 to each laser oscillator 42 is started. Due to the circulating supply of the cooling water, each laser oscillator 42 is maintained at a substantially constant temperature, and the output characteristic unique to each laser oscillator 42 is also maintained.

Next, the connection relationship of the electric system in the embroidery sewing machine having the above-mentioned structure will be described with reference to FIGS. 3 to 6. Here, FIG. 3 is a block diagram schematically showing the entire electric system, and FIG. 4 is a controller box 10.
0 is a block diagram showing the configuration of the sewing machine controller 200, FIG. 5 is a block diagram showing the configuration of the sewing machine controller 200, and FIG. 6 is a block diagram showing the configuration of the laser unit box 14, both of which implement the present invention. The minimum configuration required for this is shown.

In FIG. 3, the controller box 100 also shown in FIGS. 1 and 2 is provided on the sewing machine frame 18 near the right end side of the sewing machine table 20, and operates the embroidery sewing machine such as setting of embroidery data. It is a box for inputting a command regarding. Further, the sewing machine control device 200
Are built in the central control box 34 shown in FIG. 1, and drive control of the spindle motor 52, drive control of the pulse motors 54 and 56 that move the original frame 16, or individual lasers when performing laser processing. This is a device that centrally manages each component forming the embroidery sewing machine, such as output control of the oscillator 42.

First, the structure of the controller box 100 will be described. In FIG. 4, the controller box 100 includes a CPU 110, a ROM 102, and a RAM 11
2. The control panel 104, the communication control circuit 106, the display control circuit 114, and the display device 116.

The CPU 110 controls the entire controller box 100 according to the controller program stored in the ROM 102. EEPR in the ROM 102
OM is used, but not limited to this, PROM, EP
A non-volatile memory such as a ROM or a flash memory may be used. A DRAM is used as the RAM 112, and display data and the like in display processing are stored.
Note that the RAM 112 is not limited to DRAM, and SRAM, flash memory, or other memory may be used. The operation panel 104 is a control panel through which an operator inputs various data and commands the embroidery sewing machine to operate.

The display control circuit 114 follows the display control data sent from the CPU 110 via the bus 118.
This is a circuit that controls the display of the display device 116. For this display device 116, it is optimal to use a monochrome liquid crystal display device in order to make the housing compact and to reduce power consumption. The display device 116 is not limited to a monochrome liquid crystal display device, but a color liquid crystal display device, a CRT, a plasma display device, and an LED display device (L).
Other types of display devices may be used, such as a display device in which EDs are arranged in a rectangular area in a grid pattern). The communication control circuit 106 is a control circuit for performing mutual data transmission with the sewing machine control device 200 described later.
Specifically, an embroidery command for instructing execution of embroidery and a processing command for executing laser processing are sent to the sewing machine control device 200, and a thread break signal, an emergency stop signal, etc. are received from the sewing machine control device 200. In addition, the embroidery command and processing command,
Operation timing of needle bar and laser oscillator, original frame 16
It includes stitch data for instructing the movement of the, and other command information. Each of the above components is connected to the bus 118.

Next, the structure of the sewing machine controller 200 will be described. In FIG. 5, the sewing machine control device 200 is
It is composed of a CPU 210, a ROM 204, a RAM 206, communication control circuits 202 and 216, an input processing circuit 212, and motor drive circuits 214 and 218. CP
The U 210 controls the entire embroidery sewing machine according to the sewing machine control program stored in the ROM 204. ROM2
An EEPROM is used for 04, similar to the ROM 102, but may be another type of non-volatile memory. A DRAM is used as the RAM 206 similarly to the RAM 112, but may be another type of memory.

The communication control circuit 202 is a control circuit for mutually transmitting data to and from the controller box 100 described above. Data and the like transmitted between these are as described above. Further, the communication control circuit 216 is provided in the laser unit box 14 described later.
And a control circuit for mutually performing data transmission. Specifically, a common output power level for laser processing is sent to the laser unit box 14, and output power data and the like are received from the laser unit box 14.

The motor drive circuit 214 rotationally drives the spindle motor 52 shown in FIG. 3 in accordance with the spindle drive control data sent from the CPU 210 via the bus 208. The input processing circuit 212 receives the pulse signal from the rotary encoder 50 which is provided in the main spindle motor 52 and detects the rotation of the main spindle motor 52, converts it into a format that can be processed by the sewing machine controller 200, and sends it to the CPU 210 and the RAM 206. Further, the motor drive circuit 218 individually rotates and drives the X-axis pulse motor 56 and the Y-axis pulse motor 54 shown in FIG. 3 according to the frame drive control data sent from the CPU 210 via the bus 208. It should be noted that each of the above components is coupled to the bus 208.

Next, the structure of the laser unit box 14 will be described. In FIG. 6, the laser unit box 14 includes a CPU 150, a ROM 152, and a RAM.
154, communication control circuit 142 and output processing circuit 144
It is constituted by. CPU150 is ROM15
The entire laser unit box 14 is controlled according to the laser control program stored in 2. ROM15
In addition to the above laser control program, 2 stores the value of each control voltage applied to each laser oscillator 42 for each common output power level. Also, this R
The OM152 has an EEPROM similar to the ROM102.
Are used, but other types of non-volatile memory may be used. RAM154 is DRA like RAM112
Although M is used, other types of memory may be used.

The communication control circuit 142 is a control circuit for performing mutual data transmission with the sewing machine control device 200 described above. Data and the like transmitted between these are as described above. Output processing circuit 144
Is a circuit for converting the voltage output to the laser oscillator 42 according to the output data (selection data) sent from the CPU 150 via the bus 158. Laser oscillator 4
The current or voltage that is output to control 2 is pulse width modulated (P
WM) or pulse frequency modulation (PFM) is used. Here, the pulse width modulation controls the duty ratio of a pulse wave output at a constant frequency, and the pulse frequency modulation controls the frequency of a pulse wave output at a constant duty ratio. . The output processing circuit 144 is not limited to the pulse width modulation described above, but may have a configuration capable of switching and outputting a plurality of control currents or a plurality of control voltages by a current hysteresis control, a relay, a resistance network, or the like. It should be noted that each of the above components is coupled to the bus 158.

Next, a processing procedure for carrying out the present invention will be described with reference to FIGS. 7 to 9. 7 and 9 are flowcharts showing the processing procedure for carrying out the present invention. FIG. 7 shows the level selection processing, and FIG. 9 shows the level output processing and the laser oscillator control processing. FIG. 8 is a characteristic diagram showing the relationship between the output power and the control voltage for each level.

The process shown in FIG. 7 is a process executed before embroidery or laser processing is performed, and the controller box 100 reads (or inputs) embroidery data.
After that, it is performed block by block (or stitch by stitch). The embroidery data read at this time is RAM
It is stored in 112. First, the head selected by the embroidery data in step S10 is the "sewing machine head".
In the case of, the color of the sewing thread, that is, the needle bar is selected (step S14). Since the technique of selecting needle bars and switching between different types of heads for embroidery and processing is well known in the art, detailed description thereof will be omitted.

On the other hand, if the head selected by the embroidery data in step S10 is the "laser head", the level is selected (step S12). This "level" is a stage indicating the output power output from the laser oscillator 42, and has 10 stages (0 to 10). The level is not limited to 10 levels, but 100 levels
It is also possible to set in arbitrary plural stages such as stages (0 to 100). The level selected in step S12 is stored in the RAM 112 together with the block at that position.

For example, in the case of an embroidery sewing machine having four laser oscillators 42, each level (0 to 1)
The relationship between the output power and the control voltage for each step up to 0) is as shown in the characteristic diagram of FIG. It should be noted that each of these laser oscillators 42 can obtain an output power of 10 watts with respect to a rated control voltage (4 volts in this example). In the figure, "1H, 2H, 3H, 4H"
Of the first laser oscillator 42a (thin solid line), the second laser oscillator 42b (dashed line), the third laser oscillator 42c (dashed line), and the fourth laser oscillator 42d (dashed line) shown in FIG. 1, respectively. The characteristics are shown, and "ideal" shows the characteristics (thick solid line) in the case of ideal output power. The relationship between the output power L and the control voltage P at each level obtained from this characteristic diagram is as shown in Table 1 below. In addition,
In Table 1, the moving speed of the original frame 16 is 2.5 to 3.5 (m / se
c) is the output power L and control voltage P in the case of the energy density for cutting a cotton cloth.

[0032]

[Table 1]

If the output power L is set to 6 watts when the level is "6", the control voltage P output to each laser oscillator 42 is 1.5 in order from the first laser oscillator. , 1.8, 1.7, 2.0 Volt should be set. That is, the value of the control voltage at the position where the 6 watt line and the characteristic line intersect in the characteristic diagram may be stored. Similarly, if the output power L is set to be 7 watts when the level is "7", the control voltage P output to each laser oscillator 42 is 1.9, 2.2, respectively in order from the first laser oscillator. 2.
You can set 1, 2.7 volts. On the other hand, when setting a plurality of arbitrary levels such as 100 levels (from 0 to 100), the value of the control voltage of each level is obtained by performing an operation of interpolating the set values of the 10 levels. be able to. For example, in the case of the stage "65", it can be easily obtained by calculating the intermediate point between the stage "6" and the stage "7" in Table 1 above.

As described above, the value of each control voltage applied to each laser oscillator 42 so as to generate the common output power is the same as that shown in FIG. It is stored in the ROM 152 of the unit boxes 14a, 14b, ..., 14n. That is, for the laser oscillator 42a, the laser unit box 14a, for the laser oscillator 42b, the laser unit box 14b,
The value of the control voltage for generating the output power common to the laser unit box 14n is stored for the laser oscillator 42n. Here, in the case of the embroidery sewing machine shown in FIGS. 1 and 2, the laser oscillators 42a, 42b, 42c, 4 are sequentially provided to the ROM 152 of each laser unit box 14a, 14b, 14c, 14d.
The value of the control voltage that produces the respective common output power of 2d is stored. The relationship between the level and the output power is not uniquely determined, but varies depending on the relationship between the energy density at the position where the laser light is irradiated and the moving speed of the material frame 16. Therefore, it is necessary to set the output power to a level suitable for the energy density and the moving speed.

Next, the processing shown in FIG. 9 is executed every time laser processing is performed, the level output processing is executed in the controller box 100, and the laser oscillator control processing is executed in the laser unit box 14. Is. First, the controller box 10
At 0, it is judged whether it is a "laser" or a "sewing machine" to be instructed for each block (or each stitch) of embroidery data (step S20). If "laser", it is selected in step S12 and stored in the RAM 112. The current level (corresponding to the machining execution command) is transmitted to the laser unit box 14 (step S22).

The laser unit box 14 provided for each laser oscillator 42 receives the level sent from the controller box 100 via the sewing machine controller 200 (step S30), and outputs the value of the control voltage corresponding to the level. Obtained from the ROM 152 (step S3
2) The output processing circuit 144 outputs the control voltage {more specifically, the pulse width modulation voltage} that provides the output power corresponding to the commanded level, to the laser oscillator 42 (step S34). As described above, the output pulse width modulation voltage is different for each laser oscillator 42, but the power of the laser light output from each laser oscillator 42 is common (that is, exactly the same, or Almost the same). This is the laser oscillator 4 by the cooling water supplied from the chiller box 32.
Since 2 is maintained at a substantially constant temperature, its output characteristic can also be maintained.

In this way, the embroidery sewing machine (laser processing machine) provided with the plurality of laser oscillators 42 is adjusted so that the same output power is obtained at the same level. As a result, multiple laser oscillators 4
If the laser processing is simultaneously performed in step 2, the finish can be made the same. Further, according to the present invention, a device for realizing feedback control is not required, and
The present invention can be implemented using only existing devices. Therefore, the cost of the embroidery sewing machine can be kept low, and the embroidery sewing machine can be provided at a low cost.

When laser processing is performed by limiting the work to be processed to one type such as cloth, the control voltage value for each laser oscillator 42 may be stored in the ROM 152. Also, the controller box 10
In response to the level sent from 0 through the sewing machine controller 200, the stored control voltage value is output to the output processing circuit 144.
Output to each laser oscillator 42. In this case, the storage capacity of the ROM 152 can be reduced, and the procedure of step S32 described above is unnecessary, so that the control processing program can be easily created.

Although one embodiment of the laser processing machine has been described above, the structure, shape, size, material, number, arrangement and operating conditions of the other parts of this laser processing machine are also limited to this embodiment. Not something that is done.
For example, although the carbon dioxide gas laser was used as the plurality of laser oscillators 42, other gas lasers (specifically, He-Ne laser or Ar ⁺ laser), solid-state lasers (specifically,
YAG laser, ruby laser, glass laser),
The present invention can be similarly applied to a laser processing machine, such as a semiconductor laser, a HF / DF chemical laser, a rare gas halide excimer laser, which is provided with a plurality of laser oscillators of other types and simultaneously performs laser processing. .

The values of the respective control voltages applied to the respective laser oscillators 42 are set to the laser unit box 14 for each of a plurality of levels of the common output power.
Although it is stored in advance in the ROM 152, it is not limited to the storage location and storage method. That is, the operator may store the value of the control voltage in the RAM 154 of the laser unit box 14 by using an up / down switch for adjusting the output power of each laser unit box 14. If the laser oscillator is designed to be controlled by current, the value of the control current for generating the common output power is stored in place of the control voltage, and based on the value of the control current. The laser oscillator may be controlled. By doing so, even when a laser oscillator controlled by current is used, it is possible to obtain the same effect as that of the above embodiment.

Furthermore, the value of each control voltage applied to each laser oscillator 42 for each common output power level is stored for each discrete common output power level for each laser oscillator 42 to be output. However, the continuous change state is stored so that the equation of the curve that is spline-interpolated based on the value of the control voltage corresponding to a plurality of output powers and the equation of the straight line that is approximated based on the least squares method are stored. It may be stored in another data format shown.

In the present invention, the controller box 100 sends a level as a machining execution command to each laser unit box 14 connected in a bus shape to control the laser oscillator 42. Not limited to this configuration, the control voltage value for each laser oscillator 42 for the common output power level is stored in the ROM or RAM of the controller box 100, and each laser unit box is connected to the controller box 100 in a star shape. It is also possible to send the value of the control voltage to 14 and control the laser oscillator 42. This configuration is similarly applicable to the sewing machine control device 200.

Even when the present invention is implemented by the other method as described above, as a result, the value of the control voltage corresponding to the desired common output power is output for each laser oscillator, Laser processing can be performed simultaneously with the common output power. Even in this case, since the laser processing is performed with a common output power, the finish can be made constant.

Then, the present invention is applied to the embroidery sewing machine having a plurality of multi-needle type sewing heads and one laser head corresponding to each sewing head in the above embodiment. The present invention is not limited to this example, and various lasers are provided with a plurality of laser oscillators, such as a laser processing machine having a plurality of laser oscillators in one head, and laser processing is performed simultaneously by the plurality of laser oscillators. The present invention can be applied to a processing machine. Even in this case, since the laser processing is performed with the same output power as in the above-described extended example, the finish can be made constant.

[0045]

As described above, according to the invention of claim 1, when the processing execution command for instructing the execution of the laser processing is received, the control voltages corresponding to the respective stored control voltage values are respectively supplied. Output to the laser oscillator of, and laser processing is performed simultaneously with a common output power. For this reason, since the laser processing is performed with a common output power, the finish can be made constant. Therefore, unlike the prior art, a device for realizing feedback control is not required, so that the laser beam machine can be provided at low cost.

According to the second aspect of the present invention, the value of the control voltage is stored corresponding to each common output power level for each laser oscillator, and these control voltages are set to the common output power level. According to this, it is possible to specify it when executing processing. Therefore, since the common output power can be switched according to the work piece, the finish can be made constant even if the work piece changes.

[Brief description of the drawings]

FIG. 1 is a front view of a multi-head sewing machine device.

FIG. 2 is a plan view of a multi-head sewing machine device.

FIG. 3 is a block diagram schematically showing an entire electric system.

FIG. 4 is a block diagram showing a configuration of a controller box.

FIG. 5 is a block diagram showing a configuration of a sewing machine controller.

FIG. 6 is a block diagram showing a configuration of a laser unit box.

FIG. 7 is a flowchart showing level selection processing.

FIG. 8 is a characteristic diagram showing the relationship between output power and control voltage for each level.

FIG. 9 is a flowchart showing a level output process and a laser oscillator control process.

[Explanation of symbols]

 14 laser unit box 16 original frame 22 sewing machine head 26 laser head 42 laser oscillator 100 controller box 152 ROM 200 sewing machine control device

Claims (2)

[Claims] 1. In a laser processing machine comprising a plurality of laser oscillators and performing laser processing simultaneously by the plurality of laser oscillators, a value of a control voltage for generating a common output power is stored for each laser oscillator. In response to the processing execution command that commands the execution of laser processing,
A laser processing machine, wherein a control voltage corresponding to each stored control voltage value is output to each corresponding laser oscillator to simultaneously perform laser processing with the common output power. 2. The laser processing machine according to claim 1, wherein the value of each control voltage applied to each laser oscillator is stored for each level of the common output power, and the common value is stored when the processing is executed. A laser processing machine characterized in that the level of output power can be specified.