JP6036737B2 - Laser processing apparatus, laser processing method and program - Google Patents

Description

  The present invention relates to a laser processing apparatus, a laser processing method, and a program.

Conventionally, various laser processing apparatuses have been proposed.
For example, in the laser marking device described in Patent Document 1, the display screen of the console is provided with a setting unit for setting marking information and an image display field for displaying a print image of a print pattern. In the setting section, a line width input field for inputting a marking processing line width (target value) of a print pattern, a power input field for inputting a laser power (target value), and a material for a processing object are selected. The material pull-down menu and the color pull-down menu for selecting the color of the object to be processed are provided.

  The control device displays the line width of the print image thicker as the value in the line width input field increases. The control device corrects the line width of the print image by multiplying the value of the line width input field by the power line width correction coefficient corresponding to the value of the power input field. Note that the power line width correction coefficient increases as the value in the power input field increases. Further, the control device changes and displays the gradation of the print image based on the value in the power input field to indicate the difference in processing depth.

  Further, the control device multiplies the value of the line width input field by the material line width correction coefficient corresponding to the material set in the material pull-down menu to correct the line width of the print image. The material line width correction coefficient is larger for materials that are easily melted, such as resin, and is smaller for materials that are difficult to melt, such as metal. Further, the control device is configured to change the background color of the image display field to the color selected from the color pull-down menu.

JP 2010-149158 A

  However, in the laser marking apparatus described in Patent Document 1, the beam width of the laser beam, the scanning speed of the laser beam by the galvanometer mirror, and the like are not considered, and the actual scanning state of the laser beam on the workpiece May not be able to be simulated. For example, when laser light is scanned two-dimensionally so that it bends on a V-shape on the workpiece, it is difficult to simulate and present an overshoot at a corner or an excess of heating time. There is a problem that needs to be done.

  Accordingly, the present invention has been made to solve the above-described problems, and a laser processing apparatus and a laser processing method capable of simulating an actual print pattern in consideration of a scanning speed of a pulse laser and the like. And to provide a program.

In order to achieve the above object, a laser processing apparatus according to claim 1 includes a laser oscillator that emits a pulse laser, a laser scanning unit that deflects and scans the pulse laser emitted from the laser oscillator with a galvano scanner, In a laser processing apparatus comprising a condensing unit that condenses the pulse laser scanned by the laser scanning unit and emits the pulse laser toward the processing target, a shape pattern processed into the processing target by the pulse laser and processing information obtaining means for obtaining processing information indicating a processing conditions wherein the material of the workpiece, and acquires the processing conditions including a driving condition of the galvano scanner for deflecting the pulsed laser machining the workpiece The scanning locus of the pulse laser that is processed into the object to be processed is obtained from the acquisition unit and the shape pattern indicated in the processing information. A reference printing pattern generating means for generating a quasi print pattern, a scanning trajectory of the pulse laser shown in the reference print pattern, based on the processing conditions including the driving conditions of the material as the galvanometer scanner of the workpiece Correction means for correcting and creating a corrected print pattern, and display control means for displaying the corrected print pattern on a display unit, the correction means processing the corrected print pattern by the pulse laser. It is characterized in that it is created with a dot pattern corresponding to a processing mark for each pulse processed into an object or every predetermined time .

  The laser processing apparatus according to claim 2 is the laser processing apparatus according to claim 1, wherein the reference print pattern is compared with the correction print pattern, and the correction print pattern with respect to the reference print pattern is a predetermined value. Provided with a corrected print pattern determining means for determining whether there is a warning portion where an error of a threshold value or more occurs, or a warning portion where a thermal effect that causes a tissue change in the workpiece is generated by the pulse laser. When the display control means determines that the corrected print pattern has the warning location via the corrected print pattern determination means, the display section displays the corrected print pattern and the warning location. Warning information for informing the user is displayed.

According to a third aspect of the present invention, there is provided the laser processing apparatus according to the second aspect , wherein the warning information includes a warning mark indicating the warning location, and includes a selection receiving unit that receives the selection of the warning mark. The display control means, when receiving the selection of the warning mark through the selection receiving means, enlarges the dot pattern of the warning location corresponding to the warning mark and displays each dot in an identifiable manner. It is characterized by.

A laser processing apparatus according to a fourth aspect is the laser processing apparatus according to any one of the first to third aspects, wherein a driving condition of the galvano scanner for deflecting the pulse laser is a scanning speed of the galvano scanner. And the scanning responsiveness, and the correction means corrects the dot pattern based on at least one of the scanning speed and the scanning responsiveness.

A laser processing device according to claim 5 is the laser processing device according to any one of claims 2 to 4 , wherein the warning location is a location where a thermal effect that causes the tissue change occurs. The warning information includes a frame display surrounding a warning location where the thermal effect occurs, and the display control means displays the thermal effect in an identifiable manner based on the warning information.
Furthermore, a laser processing apparatus according to claim 6 includes a laser oscillator that emits a pulse laser, a laser scanning unit that deflects and scans the pulse laser emitted from the laser oscillator by a galvano scanner, and the laser scanning unit. Processing information indicating a shape pattern to be processed into the processing object by the pulse laser in a laser processing apparatus comprising: a condensing unit that condenses the pulse laser scanned by the laser and emits the laser light toward the processing object From the shape pattern shown in the processing information, processing information acquisition means for acquiring processing conditions including driving conditions for the galvano scanner for deflecting the pulse laser to be processed into the processing object, A reference print pattern for creating a reference print pattern indicating a scanning locus of the pulse laser to be processed into the processing object Forming means, correcting means for correcting the scanning locus of the pulse laser shown in the reference print pattern based on the driving conditions of the galvano scanner of the processing conditions, and the corrected print pattern Display control means for displaying on the display unit, the reference print pattern and the corrected print pattern are compared, and the corrected print pattern with respect to the reference print pattern has a warning location where an error of a predetermined threshold or more occurs, or A correction print pattern determination unit that determines whether or not the pulsed laser has a warning part that causes a thermal effect that causes a change in the structure of the workpiece, and the display control unit includes the correction When it is determined that the corrected print pattern has the warning location via the print pattern determination means, the display unit displays When a correction print pattern and warning information for informing the warning location are displayed, and the warning location is a location where a thermal effect causing the tissue change occurs, a frame surrounding the warning location where the thermal effect occurs The thermal effect is displayed in an identifiable manner by the warning information including the display.

The laser processing method according to claim 7 is a laser oscillator that emits a pulse laser, a laser scanning unit that deflects and scans the pulse laser emitted from the laser oscillator with a galvano scanner, and the laser scanning unit. A laser processing method executed by a laser processing apparatus including a condensing unit that collects the pulsed laser scanned in step S3 and emits the pulsed laser beam toward a workpiece, a control unit, an operation unit, and a display unit. There is a processing information acquisition step for acquiring processing information indicating a shape pattern to be processed into the processing object by the pulse laser, which is executed by the control unit, via the operation unit, and a material of the processing object, a processing condition acquisition step of acquiring processing condition and a drive condition of the galvano scanner for deflecting the pulsed laser machining the workpiece through the operating unit, A reference print pattern creating step for creating a reference print pattern indicating a scanning trajectory of the pulse laser to be machined on the workpiece from the shape pattern shown in the machining information obtained in the machining information obtaining step; and the reference print pattern The pulsed laser scanning trajectory shown in the reference print pattern created in the creation step is corrected based on the processing conditions including the material of the processing object and the driving conditions of the galvano scanner, and a corrected print pattern is obtained. A correction process to create, and a display control process to display the correction print pattern created in the correction process on the display unit. In the correction process, the correction print pattern is processed by the pulse laser by the pulse laser. each pulse that is processed into the object, or to create a dot pattern corresponding to the processing marks at predetermined time And features.

The program according to claim 8 is a laser oscillator that emits a pulse laser, a laser scanning unit that scans the pulse laser emitted from the laser oscillator, and a pulse laser that is scanned by the laser scanning unit. Then, processing information indicating a shape pattern to be processed on the processing object by the pulse laser is transmitted to the operation unit on a computer including a light collecting unit, an operation unit, and a display unit that emit the light toward the processing object. Processing conditions including a processing information acquisition step to be acquired via the control unit , a material for the processing target, and a driving condition for the galvano scanner that deflects the pulse laser to be processed into the processing target via the operation unit. The processing condition acquisition step to be acquired and the pallet to be processed into the processing object from the shape pattern indicated in the processing information acquired in the processing information acquisition step. A reference printing pattern generation step of generating a reference printing pattern of a laser scanning trajectory, a scanning trajectory of the pulse laser shown in the reference printing pattern created in the reference print pattern forming step, and the material of the workpiece A correction process for generating a corrected print pattern by correcting based on the processing conditions including the driving condition of the galvano scanner, and a display control process for displaying the corrected print pattern generated in the correction process on the display unit In the correction step, the correction print pattern is created with a dot pattern corresponding to a processing mark for each pulse processed every predetermined time or for a predetermined time by the pulse laser. it is the order of the program to run on.

In the laser processing apparatus according to claim 1, the laser processing method according to claim 7, and the program according to claim 8, the reference print pattern indicating the scanning locus of the pulse laser is obtained from the processing information indicating the shape pattern to be processed on the processing object. After that, a corrected print pattern in which the reference print pattern is corrected based on the processing conditions including the material of the processing object and the driving conditions of the galvano scanner is generated and displayed on the display unit. This corrected print pattern is created with a dot pattern corresponding to a processing mark for each pulse processed for a processing object by a pulse laser or for every predetermined time.

As a result, the laser processing apparatus simulates and displays a corrected print pattern corrected in consideration of the scanning speed of the pulse laser based on the material of the workpiece and the driving conditions of the galvano scanner, that is, the actual print pattern. Can be displayed on the screen. Therefore, the user can examine the state and processing conditions that are closer to the actual print quality by looking at the corrected print pattern displayed on the display unit, and can reduce the test print. In addition, the correction print pattern can be created with a dot pattern corresponding to a processing mark for each pulse processed by a pulse laser or for each predetermined time, and displayed on the display unit. Thereby, the user can examine the state and processing conditions that are closer to the actual print quality by looking at the corrected print pattern displayed on the display unit.

  In the laser processing apparatus according to claim 2, the correction print pattern includes a warning part where an error of a predetermined threshold value or more occurs, or a warning part where a thermal influence that causes a tissue change to occur on the object to be processed by the pulse laser occurs. If so, the correction print pattern and the warning information indicating the warning location are displayed on the display unit. As a result, the user can correct the processing conditions including the driving conditions of the galvano scanner by confirming the warning information, and can display the corrected print pattern on the display again, thereby avoiding actual test printing. Is possible.

Moreover, in the laser processing apparatus according to claim 3 , the user selects a warning mark indicating the warning location via the selection receiving unit, and thereby enlarges the dot pattern of the warning location corresponding to the warning mark. This makes it possible to further examine the processing conditions including the driving conditions of the galvano scanner.

Further, in the laser processing apparatus according to claim 4 , in order to correct the dot pattern constituting the correction print pattern based on at least one of the scanning speed and the scan responsiveness of the galvano scanner, a print pattern closer to the actual print pattern is obtained. It is possible to display by simulation.

In the laser processing apparatus according to the fifth aspect , the user can easily confirm a warning location where a thermal influence that causes a tissue change on the workpiece is generated by the pulse laser by a frame display surrounding the warning location. At the same time, the thermal effect can be identified. Therefore, the user can study the processing conditions including the driving conditions of the galvano scanner in more detail.
Furthermore, in the laser processing apparatus according to claim 6, a reference print pattern indicating a scanning locus of the pulse laser is created from the processing information indicating the shape pattern to be processed into the processing object, and then the reference print pattern is used as a driving condition for the galvano scanner. A corrected print pattern corrected based on the above is created and displayed on the display unit. In addition, if the corrected print pattern has a warning location where an error of a predetermined threshold value or more occurs, or a warning location where a thermal effect that causes a tissue change to occur on the workpiece is generated by the pulse laser, the corrected print pattern is displayed. The pattern and warning information for indicating the warning location are displayed on the display unit. In addition, when the warning location is a location where a thermal effect causing a tissue change occurs, the thermal effect is displayed so as to be identifiable by warning information including a frame display surrounding the warning location where the thermal effect occurs.
As a result, the laser processing apparatus can simulate the corrected print pattern corrected in consideration of the scanning speed of the pulse laser based on the driving condition of the galvano scanner, that is, the actual print pattern, and display it on the display unit. It becomes. Therefore, the user can examine the state and processing conditions that are closer to the actual print quality by looking at the corrected print pattern displayed on the display unit, and can reduce the test print. In addition, the user can correct the processing conditions including the driving conditions of the galvano scanner by confirming the warning information, and can display the corrected print pattern on the display again, thereby avoiding actual test printing. It becomes possible. Furthermore, the user can easily confirm the warning location where the thermal influence that causes the tissue change to occur on the object to be processed by the pulse laser and can identify the thermal influence by the frame display surrounding the warning location. It becomes. Therefore, the user can study the processing conditions including the driving conditions of the galvano scanner in more detail.

It is a schematic structure of the laser processing apparatus which concerns on this embodiment. It is a block diagram which shows the electric constitution of a laser processing apparatus. It is a figure which shows an example of the control parameter data file stored in the control parameter storage area of a printing information creation apparatus. It is a figure which shows an example of the stop time threshold value table of aluminum stored in the threshold value information storage area of a printing information creation apparatus. It is a figure which shows an example of the overshoot threshold value table of aluminum stored in the threshold value information storage area of a printing information creation apparatus. It is a figure which shows an example of the heat influence threshold value table of aluminum stored in the threshold value information storage area of a printing information creation apparatus. It is a flowchart which shows the "correction printing pattern display process" which CPU of a printing information creation apparatus performs. It is a figure which shows an example of a marking (printing) information input screen. It is a figure which shows an example of the display screen of a correction | amendment printing pattern. It is a figure which shows an example of the display screen at the time of selecting the warning mark of "stop time is large." It is a figure which shows an example of the enlarged display part at the time of selecting the warning mark of "overshoot large". It is a figure which shows an example of the enlarged display part at the time of selecting the warning mark of "the heat influence large". It is a figure which shows an example of the enlarged display part when the warning mark of "high scanning speed" is selected.

Hereinafter, a laser processing apparatus, a laser processing method, and a program according to an embodiment of the present invention will be described in detail with reference to the drawings based on an embodiment. First, a schematic configuration of the laser processing apparatus 1 according to the present embodiment will be described with reference to FIG.
As shown in FIG. 1, a laser processing apparatus 1 according to the present embodiment includes a print information creation apparatus 2 configured by a personal computer or the like, a laser processing apparatus main body 3, and a laser controller 6.

  The laser processing apparatus main body 3 performs marking (printing) processing by two-dimensionally scanning the processing surface 7A of the processing object 7 with the laser beam L. The laser controller 6 is configured by a computer, and is connected to the print information generating apparatus 2 so as to be capable of bidirectional communication, and is electrically connected to the laser processing apparatus main body 3. The laser controller 6 drives and controls the laser processing apparatus main body 3 based on the print information, control parameters, various instruction information, and the like transmitted from the print information creation apparatus 2.

  A schematic configuration of the laser processing apparatus main body 3 will be described with reference to FIG. In the description of the laser processing apparatus main body 3, the left direction, the right direction, the upper direction, and the lower direction in FIG. 1 are the front direction, the rear direction, the upper direction, and the lower direction, respectively. Therefore, the emission direction of the laser beam L (pulse laser) of the laser oscillator 21 is the forward direction. The direction perpendicular to the main body base 11 and the laser beam L is the vertical direction. The direction perpendicular to the vertical direction and the front-rear direction of the laser processing apparatus main body 3 is the left-right direction of the laser processing apparatus main body 3.

  As shown in FIG. 1, the laser processing apparatus main body 3 includes a main body base 11, a laser oscillation unit 12 that emits laser light L, an optical shutter unit 13, a light damper (not shown), and a half mirror (not shown). And a guide light section 15, a reflection mirror 16, an optical sensor 17, a galvano scanner 18, an fθ lens 19, and the like, and covered with a substantially rectangular parallelepiped housing cover (not shown).

  The laser oscillation unit 12 includes a laser oscillator 21, a beam expander 22, and a mounting base 23. The laser oscillator 21 includes a laser medium and a passive Q switch. The laser medium is excited by excitation light emitted from a pumping semiconductor laser (not shown) through the optical fiber 14 and oscillates laser light. The passive Q switch functions as a Q switch that oscillates laser light oscillated by a laser medium as a pulsed pulse laser. Therefore, the laser oscillator 21 oscillates a pulse laser through the passive Q switch, and outputs a laser beam L (pulse laser) for performing marking (printing) processing on the processing surface 7A of the processing target 7.

  The beam expander 22 adjusts the beam diameter of the laser light L (for example, enlarges the beam diameter), and is provided coaxially with the laser oscillator 21. The mounting base 23 is mounted so that the laser oscillator 21 can adjust the optical axis of the laser light L, and is fixed to the upper surface on the rear side of the main body base 11 with respect to the center position in the front-rear direction by the mounting screws 25.

  The optical shutter unit 13 includes a shutter motor 26 and a flat shutter 27. The shutter motor 26 is composed of a stepping motor or the like. The shutter 27 is attached to the motor shaft of the shutter motor 26 and rotates coaxially. When the shutter 27 is rotated to a position that blocks the optical path of the laser light L emitted from the beam expander 22, the shutter 27 reflects the laser light L to an optical damper provided in the right direction with respect to the optical shutter unit 13. . On the other hand, when the shutter 27 is rotated so as not to be positioned on the optical path of the laser beam L emitted from the beam expander 22, the laser beam L emitted from the beam expander 22 is transmitted to the front side of the optical shutter unit 13. It is incident on the half mirror arranged at.

  The optical damper absorbs the laser light L reflected by the shutter 27. The optical damper is cooled by a cooling device (not shown). The half mirror is arranged so as to form an angle of 45 degrees obliquely left frontward with respect to the optical path of the laser light L. The half mirror transmits almost all of the laser beam L incident from the rear side. The half mirror reflects a part of the laser beam L incident from the rear side, for example, 1% of the laser beam L to the reflection mirror 16 at a reflection angle of 45 degrees. The reflection mirror 16 is arranged in the left direction with respect to the substantially central position of the rear side surface on which the laser beam L of the half mirror is incident.

  The guide light unit 15 generates a visible laser beam that is visible coherent light, for example, a visible semiconductor laser 28 that emits red laser light (see FIG. 2), and a visible laser beam M that is emitted from the visible semiconductor laser 28 as parallel light. And a lens group (not shown) that converges on the lens. The visible laser beam M has a wavelength different from that of the laser beam L emitted from the laser oscillator 21. The guide light unit 15 is arranged in the right direction with respect to a substantially central position where the laser light L of the half mirror is emitted. As a result, the visible laser beam M is incident at a substantially central position where the laser beam L of the half mirror is emitted at an incident angle of 45 degrees with respect to the front side surface of the half mirror, that is, the reflecting surface, and reflected by 45 degrees. It is reflected on the optical path of the laser beam L at the corner.

  Here, the reflectance of the half mirror has wavelength dependency. Specifically, the half mirror is subjected to a surface treatment of a multilayer film structure of a dielectric layer and a metal layer, has a high reflectance with respect to the wavelength of the visible laser beam M, and emits light of other wavelengths. Is configured to transmit almost (99%).

  The reflection mirror 16 is arranged so as to form an angle of 45 degrees in the diagonally left front direction with respect to the front-rear direction parallel to the optical path of the laser light L, and one of the laser light L reflected on the rear side surface of the half mirror. The part is incident at an incident angle of 45 degrees with respect to the approximate center position of the reflecting surface. The reflection mirror 16 reflects the laser beam L incident on the reflection surface at an incident angle of 45 degrees toward the front side at a reflection angle of 45 degrees.

  The optical sensor 17 is composed of a photodetector or the like that detects the light emission intensity of the laser light L, and is disposed in the front direction in FIG. 1 with respect to a substantially central position where the laser light L of the reflection mirror 16 is reflected. As a result, the optical sensor 17 receives the laser beam L reflected by the reflection mirror 16 and detects the emission intensity of the incident laser beam L. Accordingly, it is possible to detect the emission intensity of the laser light L output from the laser oscillator 21 via the optical sensor 17.

  The galvano scanner 18 is attached to the upper side of the through hole formed in the front end portion of the main body base 11, and lowers the laser light L emitted from the laser oscillation unit 12 and the visible laser light M reflected by the half mirror. 2D scanning. The galvano scanner 18 includes a galvano X-axis motor 31 and a galvano Y-axis motor 32 that are fitted into the mounting portion 33 from the outside so that the respective motor shafts are orthogonal to each other. Scanning mirrors attached to the tip end face each other inside. Then, the laser light L and the visible laser light M are two-dimensionally scanned downward by controlling the rotation of the motors 31 and 32 and rotating the scanning mirrors. The two-dimensional scanning direction is a front-rear direction (X direction) and a left-right direction (Y direction).

  The fθ lens 19 condenses the laser beam L and the visible laser beam M, which are two-dimensionally scanned by the galvano scanner 18, on the processing surface 7A of the processing object 7 disposed below. Accordingly, by controlling the rotation of the motors 31 and 32, the laser light L and the visible laser light M are formed in a desired print pattern on the processing surface 7A of the processing object 7 in the front-rear direction (X direction) and the left-right direction. Two-dimensional scanning is performed in the (Y direction).

  Next, the circuit configuration of the print information creation device 2, the laser processing device main body 3 and the laser controller 6 constituting the laser processing device 1 will be described with reference to FIG. First, circuit configurations of the laser processing apparatus main body 3 and the laser controller 6 will be described with reference to FIG.

  As shown in FIG. 2, the laser processing apparatus body 3 includes a galvano controller 35, a galvano driver 36, a laser driver 37, a semiconductor laser driver 38, and the like. The laser controller 6 is electrically connected to a galvano controller 35, a laser driver 37, a semiconductor laser driver 38, an optical sensor 17, a shutter motor 26, and the like. The laser controller 6 is connected to the print information generating device 2 so as to be capable of two-way communication. The print information transmitted from the print information generating device 2, the control parameters of the laser processing device main body 3, and various instruction information from the user. Etc. can be received.

  The laser controller 6 includes an arithmetic device that performs overall control of the laser processing apparatus main body 3, a CPU 41 as a control device, a RAM 42, a ROM 43, a timer 44 that measures time, and the like. The CPU 41, the RAM 42, the ROM 43, and the timer 44 are connected to each other via a bus line (not shown) and exchange data with each other.

  The RAM 42 is for temporarily storing various calculation results calculated by the CPU 41, XY coordinate data of the print pattern, and the like. The ROM 43 stores various programs, and stores various programs such as calculating the XY coordinate data of the print pattern based on the print information transmitted from the print information creating apparatus 2 and storing it in the RAM 42. ing. The ROM 43 stores data such as the font start point, end point, focal point, curvature, etc. of each character composed of straight lines and elliptical arcs for each font type.

  Further, the ROM 43 stores the thickness, depth, and number of print patterns corresponding to the print information received from the print information creation device 2, the laser output of the laser oscillator 21, the laser pulse width of the laser light L, and the laser generated by the galvano scanner 10. A program for storing various control parameters such as galvano scanning speed information indicating the speed at which the light L is scanned in the RAM 42 is stored.

  The CPU 41 performs various calculations and controls based on various programs stored in the ROM 43. For example, the CPU 41 outputs XY coordinate data, galvano scanning speed information, and the like of the print pattern calculated based on the print information input from the print information creation device 2 to the galvano controller 35. Further, the CPU 41 outputs laser drive information such as the laser output of the laser oscillator 21 and the laser pulse width of the laser light L set based on the print information input from the print information generating device 2 to the laser driver 37. The CPU 41 outputs a laser output control signal of the laser oscillator 21 to the laser driver 37 based on the emission intensity of the laser light L input from the optical sensor 17.

  The CPU 41 outputs to the semiconductor laser driver 38 an on signal for instructing the start of lighting of the visible semiconductor laser 28 or an off signal for instructing to turn it off. The CPU 41 instructs the shutter motor 26 to rotate the shutter 27 to a position that blocks the optical path of the laser light L, or rotates the shutter 27 to a position that does not block the optical path of the laser light L. An opening instruction signal for instructing is output.

  The galvano controller 35 calculates drive angles, rotational speeds, and the like of the galvano X-axis motor 31 and the galvano Y-axis motor 32 based on XY coordinate data, galvano scanning speed information, and the like of the print pattern input from the laser controller 6. Motor drive information representing the drive angle and rotation speed is output to the galvano driver 36. The galvano driver 36 drives and controls the galvano X-axis motor 31 and the galvano Y-axis motor 32 on the basis of the motor drive information representing the drive angle and rotation speed input from the galvano controller 35, and the laser beam L and the visible laser beam. M is scanned two-dimensionally.

  The laser driver 37 controls the laser oscillator 21 based on the laser output of the laser oscillator 21 input from the laser controller 6, the laser drive information such as the laser pulse width of the laser light L, the laser output control signal of the laser oscillator 21, and the like. To drive. Further, the semiconductor laser driver 38 drives the visible semiconductor laser 28 to turn on or off based on the ON signal or OFF signal input from the laser controller 6.

  Next, the circuit configuration of the print information creating apparatus 2 will be described with reference to FIG. As shown in FIG. 2, the print information creating apparatus 2 includes a control unit 51 that controls the entire print information creating apparatus 2, an input operation unit 55 including a mouse 52 and a keyboard 53 shown in FIG. LCD) 56, CD-ROM 57, and the like, CD-R / W 58 for writing and reading various data, programs, and the like. An input operation unit 55, a liquid crystal display 56, a CD-R / W 58, and the like are connected to the control unit 51 via an input / output interface (not shown).

  The CD-R / W 58 is a program such as “correction print pattern display process” shown in FIG. 7, a program for displaying the marking (printing) information input screen shown in FIG. 8 on the liquid crystal display 56, and the correction shown in FIGS. Various application software such as a program for displaying a print pattern display screen on the liquid crystal display 56 is read from the CD-ROM 57 or written to the CD-ROM 57.

  The control unit 51 includes a CPU 61, a RAM 62, a ROM 63, a timer 65 for measuring time, a hard disk drive (hereinafter referred to as “HDD”) 66, and the like as an arithmetic device and a control device that perform overall control of the print information creation device 2. I have. The CPU 61, the RAM 62, the ROM 63, and the timer 65 are connected to each other via a bus line (not shown), and exchange data with each other. The CPU 61 and the HDD 66 are connected via an input / output interface (not shown) to exchange data with each other.

  The RAM 62 is for temporarily storing various calculation results calculated by the CPU 61. The ROM 63 stores various programs, such as a “corrected print pattern display process” program shown in FIG. 7 may be stored in the HDD 66, read from a storage medium such as the CD-ROM 57, or downloaded from a network such as the Internet (not shown). May be.

  The HDD 66 stores various application software programs and various data files. The HDD 66 stores a control parameter data area 71 for storing the control parameter data file 71 shown in FIG. 3, and each threshold value table 81 shown in FIGS. A threshold information storage area for storing 82, 83, etc. is provided.

  An example of the control parameter data file 71 stored in the control parameter storage area of the HDD 66 will be described with reference to FIG. As shown in FIG. 3, the control parameter data file 71 drives the laser processing apparatus main body 3 for each material such as aluminum, stainless steel, and iron of the workpiece 7 to be marked (printed) with the laser beam L. It comprises a plurality of control parameter tables 75A, 75B, 75C,... That store control parameters 76 to be controlled.

  The control parameter 76 stored in each control parameter table 75A, 75B, 75C,... Is based on a print parameter 77 for determining a print pattern by the laser light L and a drive parameter 78 for driving the laser processing apparatus main body 3. It is configured. Further, the print parameter 77 is composed of parameters of “pattern thickness”, “pattern depth”, and “number of print patterns”, and drive parameters 78 are “laser output”, “laser pulse width”, “galvano scanning”. It consists of each parameter of “speed”. The “pattern thickness” stores the thickness of the print pattern, for example, the character width. The “pattern depth” stores the print pattern depth corresponding to the print quality, for example, normal, beautiful, fast, high contrast and the like. Of the drive parameters 78, the “laser pulse width” and “galvano scanning speed” determine the dot interval of a “reference printing dot pattern (reference printing pattern)” to be described later.

  The “number of print patterns” stores the number of laser beams L when tracing a print pattern, that is, the number of traces for tracing the print pattern in parallel. For example, when the “pattern thickness” is “0.1 mm to 0.3 mm” and the “number of print patterns” is “2”, the laser beam L with the beam diameter “0.1 mm to 0.3 mm” is used. Trace the print pattern twice in parallel. Accordingly, the character width to be marked is “0.2 mm to 0.6 mm”, and marking (printing) is performed with a character width that is twice that of the case where the “number of print patterns” is “1”.

  In “Laser output”, the output of the laser oscillator 21 when marking the workpiece 7 is stored. The “laser pulse width” stores the pulse width of the laser beam L (pulse laser) output from the laser oscillator 21 when marking the workpiece 7. In the “galvano scanning speed”, scanning speed information for two-dimensionally scanning the laser light L of the galvano scanner 18 when marking the workpiece 7 is stored. It should be noted that the scanning responsiveness of the motors 31 and 32 of the galvano scanner 18 at each “galvano scanning speed”, that is, the scanning responsiveness of the galvano mirror may be stored.

  Next, an example of each threshold value table 81, 82, 83, etc. stored in the threshold value information storage area of the HDD 66 will be described with reference to FIGS. Each threshold value table 81, 82, 83, etc. is created for each material such as aluminum, stainless steel, iron, etc. of the workpiece 7 to be marked (printed) with the laser beam L, and stored in the threshold information storage area. Has been. Each of the threshold value tables 81, 82, 83 shown in FIGS. 4 to 6 corresponds to the processing object 7 made of aluminum.

  As shown in FIG. 4, the stop time threshold value table 81 includes “time” and “polygonal angle”. In “Time”, a stop time during which the laser beam L stops moving and is continuously irradiated is stored as a parameter at the corner of the print pattern when marking (printing) is performed with the laser beam L. The “polygonal line angle” includes the bending angles of the print pattern for each stop time “10 degrees”, “40 degrees”, “90 degrees”, and “180 degrees” when marking (printing) processing with the laser beam L is performed. The state of heat influence on the print quality is stored.

  The processing object 7 has different resistance to the irradiation light of the laser light L depending on the material. When the object 7 to be processed has a low tolerance to the laser beam L, irradiation with the laser beam L causes a structural change such as oxidation in the material. When a structure change occurs in the workpiece 7 due to the marking (printing) processing with the laser light L, the marking (printing) processing position of the workpiece 7 changes color. This phenomenon in which the marking (printing) processing position of the processing object 7 undergoes a tissue change will be described as “thermal influence” in the present embodiment.

  The “◯” mark indicates that the influence of heat on the print quality is small or almost absent at the corner of the print pattern. The “warning” mark indicates that it is necessary to give a warning that the influence of heat on the print quality is large at the corner of the print pattern. For example, when the stop time of the movement of the laser beam L at the corner of the print pattern is longer than “0.5 milliseconds” and not longer than “1 millisecond”, printing is performed with respect to the corner of the print pattern. The angle threshold that needs to be warned that the heat influence on the quality is large is “90 degrees”. In other words, when the angle of the print pattern bend is “90 degrees” or more, if the stop time of the laser beam L at the turn angle of the print pattern is longer than “0.5 milliseconds”, there is a thermal effect on the print quality. Indicates that it is necessary to issue a warning that the size is large.

  As shown in FIG. 5, the overshoot threshold table 82 includes “scanning speed” and “polygonal line angle”. In the “scanning speed”, a scanning speed for two-dimensionally scanning the laser light L of the galvano scanner 18 when marking the workpiece 7 is stored as a parameter. The “polygonal line angle” includes the bending angles of the print pattern for each scanning speed “10 degrees”, “40 degrees”, “90 degrees”, and “180 degrees” at the time of marking (printing) processing with the laser beam L. The overshoot state of the laser beam L is stored.

  The overshoot state of the laser beam L is a state in which the position where the laser beam L is marked (printed) is shifted with respect to the XY coordinates of each print pattern. When the deviation amount of the marking (printing) processing position of the laser beam L with respect to the XY coordinates of the print pattern is larger than a predetermined threshold value, the overshoot of the laser beam L is assumed to be large. If the deviation amount of the laser beam L marking (printing) processing position is smaller than a predetermined threshold with respect to the XY coordinates of the print pattern, the overshoot of the laser beam L is assumed to be small or almost absent. The deviation amount of the position where the laser beam L is marked (printed) with respect to the XY coordinates of the print pattern is an example of the error of the present invention.

  “O” marks indicate that the overshoot of the laser beam L is small or almost absent at the corner of the print pattern. The “warning” mark indicates that it is necessary to warn that the overshoot of the laser beam L is large at the corner of the print pattern. For example, when the scanning speed of the galvano scanner 18 is higher than “10 m / sec” and lower than “15 m / sec”, a warning that the overshoot of the laser beam L is large with respect to the corner of the print pattern is issued. The angle threshold that needs to be performed is “90 degrees”. In other words, when the angle of turn of the print pattern is “90 degrees” or more, a warning that the overshoot of the laser beam L is large is necessary when the scanning speed of the galvano scanner 18 is faster than “10 m / sec”. It means that there is.

  As shown in FIG. 6, the thermal influence threshold table 83 includes “scanning speed” and “material thickness (mm)”. In the “scanning speed”, a scanning speed for two-dimensionally scanning the laser light L of the galvano scanner 18 when marking the workpiece 7 is stored as a parameter. In the “material thickness (mm)”, each thickness “0.1 mm”, “0.5 mm”, “1 mm” of the workpiece 7 with respect to each scanning speed at the time of marking (printing) processing with the laser beam L, The state of the thermal influence on the workpiece 7 at “5 mm” is stored.

  The mark “◯” indicates that the thermal effect on the workpiece 7 is small or almost absent. The “warning” mark indicates that it is necessary to give a warning that the thermal influence on the workpiece 7 is large. For example, when the scanning speed of the galvano scanner 18 is higher than “5 m / sec” and equal to or lower than “10 m / sec”, a thickness that requires a warning that the thermal influence on the workpiece 7 is large is required. The threshold value is “0.5 mm”. That is, when the thickness of the processing object 7 is “0.5 mm” or less, the thermal influence on the processing object 7 is large when the scanning speed of the galvano scanner 18 is “10 m / sec” or less. Indicates that a warning is required.

[Correction print pattern display processing]
Next, a correction print pattern which is a process executed by the CPU 61 of the print information creation apparatus 2 of the laser processing apparatus 1 configured as described above, and which corrects the print pattern based on the input print information and processing conditions. The “corrected print pattern display process” for creating the image and displaying it on the liquid crystal display 56 will be described with reference to FIGS. The corrected printing pattern is a diagram showing an estimated machining trace pattern in which a machining trace after machining that is marked (printed) on the workpiece 7 is estimated according to input printing information and machining conditions. The program shown in the flowchart of FIG. 7 is executed by the CPU 61 when a setting start instruction for instructing a print pattern setting start is input from the user via the input operation unit 55.

  As shown in FIG. 7, first, in step (hereinafter abbreviated as “S”) 11, the CPU 61 displays a marking (printing) information input screen 93 shown in FIG. 8 on the liquid crystal display 56. Then, the CPU 61 inputs print data such as characters, symbols, and figures, font size, font, character width, print quality, material of the processing object 7, thickness, and surface roughness input via the input operation unit 55. The printing information (processing information) such as is acquired and stored in the RAM 62.

  Here, an example of the marking (printing) information input screen 93 will be described with reference to FIG. As shown in FIG. 8, the marking (printing) information input screen 93 includes a print data input field 93A, a font size input field 93B, a font input field 93C, a character width input field 93D, a character thickness display field 93E, and a typeface input. A column 93F, a print quality designation cursor 93G, a material input column 93H, a thickness input column 93I, a surface roughness designation cursor 93L, a setting button 93J, a cancel button 93K, and the like are displayed.

  In the print data input field 93A, print data such as characters, symbols and figures input from the keyboard 53 or the like is displayed. In the font size input field 93B, the font size input from the keyboard 53 or the like is displayed. In the font input field 93 </ b> C, a font input from the keyboard 53 or the like or selected from the pull-down menu by the mouse 52 is displayed. In the character width input field 93D, the character width input from the keyboard 53 or the like or selected from the pull-down menu by the mouse 52 is displayed. A process in which characters, symbols, graphics, and the like are input from the keyboard 53 etc. by the print data input field 93A and the print data is displayed is an example of the processing information acquisition means of the present invention.

  In the character thickness display field 93E, any one of a fine character, a middle character, and a bold character corresponding to the character width is selected and displayed. In the typeface input field 93F, a typeface such as a solid or an italic type input from the keyboard 53 or selected by the mouse 52 is displayed. The print quality designation cursor 93G is clicked by the mouse 52 and moved to the left and right, and designates the print quality corresponding to the stop position among the five levels of print quality “fast” to “clean”. The material input field 93H displays the material of the processing object 7 that is input from the keyboard 53 or the like or selected from the pull-down menu by the mouse 52.

  In the thickness input field 93I, the thickness dimension of the workpiece 7 input from the keyboard 53 or the like or selected from the pull-down menu by the mouse 52 is displayed. The surface roughness designating cursor 93L is clicked by the mouse 52 and moved to the left and right. The surface roughness is represented by three-level triangle symbols of “rough finish”, “normal finish”, and “top finish”. Specify the surface roughness corresponding to the stop position.

  When the setting button 93J is clicked with the mouse 52, the CPU 61 stores the contents displayed in the columns 93A to 93I and the contents designated by the designation cursors 93G and 93L in the RAM 62 as print information. . On the other hand, when the cancel button 93K is clicked with the mouse 52, the CPU 61 clears the display of each column 93A to 93I and waits for re-input of print information.

  As shown in FIG. 7, in S12, the CPU 61 acquires a control parameter 76 (processing condition) for marking the processing object 7 from the control parameter data file 71 based on the print information acquired in S11. The process of obtaining the control parameter 76 (machining condition) in S12 is an example of the machining condition obtaining means of the present invention.

  For example, when the “material of the workpiece 7” included in the print information acquired in S11 is “aluminum”, the CPU 61 corresponds to the material “aluminum” from the control parameter data file 71 shown in FIG. Each control parameter table 75A, 75B, 75C,... Is selected. Then, when the “character width” included in the print information acquired in S11 is “0.3 mm”, the CPU 61 sets the “pattern thickness” of the control parameter 76 to “0.3 mm”. When the “print quality” included in the print information is “fast”, the “pattern depth” of the control parameter 76 is set to “5 μm”.

  For example, the print quality “fast” corresponds to the pattern depth “5 μm”. The print quality “2” corresponds to the pattern depth “7.5 μm”. The print quality “3” corresponds to the pattern depth “10 μm”. The print quality “4” corresponds to the pattern depth “15 μm”. The print quality “clean” corresponds to the pattern depth “20 μm”.

  Then, the CPU 61 sets the control parameter 76 that matches the “pattern thickness” to “0.3 mm” and the “pattern depth” to “5 μm” from the control parameter tables 75A, 75B, 75C,. The material “aluminum” of the object 7 to be processed and the control parameter 76 are stored in the RAM 62 as marking control parameters.

  For example, the CPU 61 determines from the control parameter data file 71 shown in FIG. 3 that “print material” representing the material of the workpiece 7 is “aluminum”, “pattern thickness” is “0.3 mm”, and “pattern depth”. ”Is“ 5 μm ”,“ Number of print patterns ”is“ 1 ”,“ Laser output ”is“ 8 kW ”,“ Laser pulse width ”is“ 100 ns ”, and“ Galvano scanning speed ”is“ 12 m / The control parameter 76 composed of the drive parameter 78 of “s” is stored in the RAM 62 as a marking control parameter.

  Subsequently, as shown in FIG. 7, in S <b> 13, the CPU 61 reads the print data, font size, and font from the RAM 62 and reads “pattern thickness” from the RAM 62 from the marking control parameter. Then, the CPU 61 creates a “reference print dot pattern (reference print pattern)” for printing the print data in a font size font using dots having the “pattern thickness” as a diameter, and stores it in the RAM 62. Accordingly, each dot of the reference printing dot pattern indicates a scanning reference of the scanning locus of the laser beam L (pulse laser), and is processed for each pulse processed by the laser beam L on the processing object 7 or every predetermined time. For example, it corresponds to a processing mark every 20 μs. In S13, the process of creating the “reference print dot pattern (reference print pattern)” is an example of the reference print pattern creating means of the present invention.

  Then, the CPU 61 reads “galvano scanning speed” from the control parameter 76 stored in the RAM 62 as a marking control parameter. Note that the scanning responsiveness of the motors 31 and 32 of the galvano scanner 18 may be acquired. After that, the CPU 61 sequentially reads the dot pattern of the “reference printing dot pattern”, and when the motors 31 and 32 of the galvano scanner 18 are driven at the “galvano scanning speed”, the laser beam L ( A dot pattern to be printed by a pulse laser) is created and stored in the RAM 62 as a “corrected print dot pattern (corrected print pattern)”. Therefore, in the “corrected print dot pattern”, dot overshoot or the like may occur at the broken line corner of the print data. The dot pattern is a scanning trajectory indicating a position at which laser beams L that are laser-driven with a predetermined pulse width are irradiated at equal intervals when the motors 31 and 32 of the galvano scanner 18 are driven without delay.

In S <b> 14, the CPU 61 reads the “corrected print dot pattern” from the RAM 62 and displays it on the liquid crystal display 56 as a print image.
For example, as shown in FIG. 9, the CPU 61 displays a corrected print dot pattern 95 of “ABC” as a print image at the center of the screen of the liquid crystal display 56.

  The CPU 61 also has a print button 96 for instructing the start of marking (printing) with the laser beam L of the reference printing dot pattern at the lower edge of the screen of the liquid crystal display 56, and the marking (printing) information input screen 93 set in S11. And a reset button 97 for instructing to display again. Further, the CPU 61 displays a cursor 98 that is moved and operated by the mouse 52 and the keyboard 53 on the screen of the liquid crystal display 56.

  Subsequently, in S <b> 15, the CPU 61 reads the “material” of the processing object 7 stored in the RAM 62 as print information (processing information). Then, the CPU 61 sequentially reads out each threshold value table stored in the threshold value information storage area corresponding to this “material”. Then, for each threshold value table, the CPU 61 extracts the coordinate position of the warning location corresponding to the “warning” mark in the dot pattern “corrected print dot pattern”. Thereafter, the CPU 61 determines whether or not there is a warning location corresponding to the “warning” mark, that is, whether or not the coordinate position of the warning location corresponding to the “warning” mark is extracted and stored in the RAM 62. Execute the process.

  Specifically, for example, when the “material” of the workpiece 7 is “aluminum” and the stop time threshold value table 81 is read, the CPU 61 first stores the “galvano scan” stored in the RAM 62 as the marking control parameter. Read "Speed". Then, the CPU 61 determines the actual “actual stop time” during which the laser beam L stops moving and continuously radiates at the turning angles of “10 degrees”, “40 degrees”, “90 degrees”, and “180 degrees”. Calculate and store in the RAM 62.

  Then, the CPU 61 sets the “actual stop time” for the turn angles of “10 degrees”, “40 degrees”, “90 degrees”, and “180 degrees” to the angles “10 degrees”, “ A determination process is performed to determine whether or not there is a “warning” mark as the “time” of “40 degrees”, “90 degrees”, and “180 degrees”.

  If the CPU 61 determines that there is something corresponding to the “warning” mark, it extracts the coordinate position of the corner dot that bends at each angle corresponding to the “warning” mark from the dot pattern of the “correction print dot pattern”. Then, it is stored in the RAM 62 as the coordinate position of “warning point” of “long stop time”. For example, when the “actual stop time” is longer than “0.5 milliseconds” and not longer than “1 millisecond”, the CPU 61 determines the coordinate position of the corner dot that turns at an angle of “90 degrees” or more. Extracted and stored in the RAM 62 as the coordinate position of “warning point” of “long stop time”.

  Subsequently, for example, when the overshoot threshold table 82 is read, the CPU 61 first reads the “galvano scanning speed” stored in the RAM 62 as a marking control parameter. Then, the CPU 61 uses the “galvano scanning speed” as the “scanning speed” in the overshoot threshold table 82, and among the angles “10 degrees”, “40 degrees”, “90 degrees”, and “180 degrees”, ”Is executed to determine whether there is an item that corresponds to the“ ”mark.

  If the CPU 61 determines that there is something corresponding to the “warning” mark, it extracts the coordinate position of the corner dot that bends at each angle corresponding to the “warning” mark from the dot pattern of the “correction print dot pattern”. Then, it is stored in the RAM 62 as the coordinate position of “warning point” of “large overshoot”. For example, when the “galvano scanning speed” is faster than “10 m / s” and less than or equal to “15 m / s”, the CPU 61 extracts the coordinate position of the corner dot that turns at an angle of “90 degrees” or more. , And stored in the RAM 62 as the coordinate position of “warning point” of “large overshoot”.

  Thereafter, for example, when the heat influence threshold value table 83 is read, the CPU 61 first reads the “thickness” of the processing object 7 stored in the RAM 62 as the printing information (processing information). Further, the CPU 61 reads “galvano scanning speed” from the control parameter 76 stored in the RAM 62 as a marking control parameter. Then, the CPU 61 sets the “thickness” as the “material thickness” in the thermal influence threshold table 83 and sets the “galvano scanning speed” as the “scanning speed” in the thermal influence threshold table 83, and corresponds to the “warning” mark. A determination process for determining whether or not is executed.

  If the CPU 61 determines that it falls under the “warning” mark, it extracts all the coordinate positions of the dot pattern of “corrected print dot pattern” and stores them in the RAM 62 as the coordinate position of “warning location” of “high thermal influence”. To do. For example, when the “galvano scanning speed” is higher than “10 m / s” and equal to or lower than “15 m / s”, the CPU 61 determines that the thickness of the workpiece 7 made of aluminum is “0.5 mm”. At the following time, all the coordinate positions of the dot pattern of “correction print dot pattern” are extracted and stored in the RAM 62 as the coordinate position of “warning location” of “high thermal influence”.

If it is determined in S15 that there is no warning location corresponding to the “warning” mark in the dot pattern of “correction print dot pattern”, that is, the coordinate position of the warning location is not stored in the RAM 62 (S15: NO), CPU61 transfers to the process of below-mentioned S19.
On the other hand, when it is determined that there is a warning location corresponding to the “warning” mark in the dot pattern of the “correction print dot pattern”, that is, the coordinate position of the warning location is stored in the RAM 62 (S15: YES). The CPU 61 proceeds to the process of S16.

  In S16, the CPU 61 reads out the coordinate position of each warning location from the RAM 62, and displays warning information indicating the content of the warning, for example, an arrow-shaped warning mark indicating the content of the warning at the corresponding warning location. For example, as shown in FIG. 9, in the “ABC” dot pattern of “correction print dot pattern”, the coordinate position of the apex of “A” is the RAM 62 as the coordinate position of “warning point” of “long stop time”. (S15: YES). In this case, the CPU 61 displays, on the screen of the liquid crystal display 56, a straight arrow-shaped warning mark 99A indicating a warning portion of “Large stop time” by the laser light L so as to indicate the apex portion of “A”.

  For example, as shown in FIG. 9, in the “ABC” dot pattern of “Correction Print Dot Pattern”, the coordinate position exceeding the apex of “A” is “warning point” of “overshoot large”. The coordinate position is stored in the RAM 62 (S15: YES). In this case, the CPU 61 displays the screen of the liquid crystal display 56 so that the broken arrow-shaped warning mark 99B indicating the “overshoot large” warning portion by the laser light L points to a portion beyond the apex portion of “A”. To display.

  Further, for example, as shown in FIG. 9, in the “ABC” dot pattern of the “correction print dot pattern”, the “thickness” of the processing object 7 formed of aluminum is “0.5 mm”, and “galvano When the “scanning speed” is “20 m / s”, that is, the print quality is “fast”, the coordinate position of “warning location” of “high thermal influence” is not stored in the RAM 62 (S15: NO). Therefore, the wavy arrow-shaped warning mark 99C indicating the whole “ABC” and indicating the “high thermal influence” warning portion is not displayed on the screen of the liquid crystal display 56.

  Subsequently, in S <b> 17, the CPU 61 executes a determination process for determining whether any of the warning portions displayed on the screen of the liquid crystal display 56 is selected within a predetermined time, for example, within 20 seconds. For example, as shown in FIG. 10, the CPU 61 moves the cursor to the upper side of each of the arrow-shaped warning marks 99A and 99B indicating the warning location displayed on the screen of the liquid crystal display 56 via the keyboard 53 or the mouse 52. 98 is moved, and a determination process is performed to determine whether or not a selection is made within a predetermined time by pressing a return key (not shown) of the keyboard 53 or clicking the mouse 52.

  Then, one of the warning points displayed on the screen of the liquid crystal display 56 is selected within a predetermined time, that is, warning information indicating the warning point, for example, one of the arrow-shaped warning marks is selected within the predetermined time. If it is determined that it has been performed (S17: YES), the CPU 61 proceeds to the process of S18.

  In S <b> 18, the CPU 61 displays the enlarged display window 101 (see FIG. 10) on the upper part from the approximate center position of the display screen 56. Then, the CPU 61 reads out the dot pattern of the portion including the selected warning portion from the dot pattern of “correction print dot pattern” from the RAM 62, and displays the enlarged display on the enlargement display window 101 at a predetermined magnification, for example, a magnification of 50 times. To do. Further, the CPU 61 displays the warning content of the warning part in the enlarged display window 101 so as to be identifiable, and then executes the processing after S17 again.

  For example, as shown in FIG. 10, when the cursor 98 is moved above the warning mark 99A indicating the warning location “Large stop time” and the mouse 52 is clicked (S17: YES), the CPU 61 The enlarged display window 101 is displayed. Then, the CPU 61 enlarges and displays the dot pattern 102 at the apex portion of “A” including the warning portion “long stop time” on the enlargement display window 101 at a magnification of 50 times.

  Then, the CPU 61 displays the dot 102A at the apex of “A” as a black circle dot slightly larger than each dot, and warns that the position corresponding to the dot 102A is changed to black due to the thermal effect. Thereafter, the CPU 61 executes the processes after S17 again. Thereby, the user can easily recognize the thermal effect at the corner when the dot pattern of the “reference printing dot pattern” is marked (printed) under the conditions set in S11.

  Also, for example, as shown in FIG. 11, when the cursor 98 is moved above the warning mark 99B indicating the warning location “overshoot large” and the mouse 52 is clicked (S17: YES), The CPU 61 displays an enlarged display window 101. Then, the CPU 61 enlarges and displays the dot pattern 103 including the portion exceeding the apex portion of “A” including the warning portion “large overshoot” on the enlargement display window 101 at a magnification of 50 times.

  As a result, the overshooted dot 103A is displayed in a state of being overshot outward in the direction perpendicular to the scanning direction with respect to the other dots. Thereafter, the CPU 61 executes the processes after S17 again. Thereby, the user can easily recognize the occurrence of overshoot when the dot pattern of “reference printing dot pattern” is marked (printed) under the conditions set in S11.

  For example, as shown in FIG. 12, the cursor is moved to the upper side of the wavy arrow-shaped warning mark indicating the warning portion of “high thermal influence” by pointing to the entire corrected print dot pattern 105, and the mouse 52 When is clicked (S17: YES), the CPU 61 displays the enlarged display window 101. Then, the CPU 61 displays a frame 106 that surrounds the outer periphery of the portion where the thermal influence is generated by the laser light L that marks (prints) the corrected printing dot pattern 105, and the thermal influence on the processing surface 7 </ b> A of the processing target 7 is displayed. Indicates the width of a certain part.

  Further, the CPU 61 is connected to the frame 106 by the laser beam L for marking (printing) the corrected print dot pattern 105, and the difference in thickness between the two thick lines 107 arranged between the dot patterns. Denotes the depth at which thermal effects occur. Thereby, the user can easily recognize the width of the heat effect and the depth of the heat effect on the processing surface 7A of the processing object 7.

  Further, for example, as shown in FIG. 13, when the cursor is moved above the warning mark indicating the “high scanning speed” warning portion (not shown) and the mouse 52 is clicked (S <b> 17: YES). The CPU 61 displays an enlarged display window 101. Then, the CPU 61 enlarges and displays the dot pattern 108 of the portion including the warning portion “high scanning speed” on the enlargement display window 101 at a magnification of 50 times. As a result, the user can easily recognize that the gap in the scanning direction between dots increases because the scanning speed is high. In S15, when the gap in the scanning direction between the dot patterns becomes larger than the diameter dimension of the dot, the CPU 61 extracts the portion as a warning point “high scanning speed” and coordinates the position of each dot. Is stored in the RAM 62.

  On the other hand, as shown in FIG. 7, none of the warning locations displayed on the screen of the liquid crystal display 56 in S17 was selected within a predetermined time, for example, within 20 seconds, that is, warning information indicating the warning location, For example, if it is determined that none of the arrow-shaped warning marks have been selected within a predetermined time (S17: NO), the CPU 61 proceeds to the process of S19. In S19, the CPU 61 executes a determination process for determining whether or not a print instruction for instructing the start of marking (printing) is input within a predetermined time, for example, within 30 seconds. For example, a determination process for determining whether or not the print button 96 shown in FIG. 9 has been clicked by the mouse 52 within a predetermined time is executed.

  When it is determined that a print instruction for instructing the start of marking (printing) is input within a predetermined time, for example, when it is determined that the print button 96 shown in FIG. 9 is clicked by the mouse 52 within a predetermined time ( S19: YES), the CPU 61 proceeds to the process of S20. In S20, the CPU 61 reads out the “dot pattern for reference printing (reference printing pattern)” acquired in S11 and the control parameter 76 acquired in S12 from the RAM 62, as processing instruction information for instructing to perform marking (printing). After transmitting to the laser controller 6, the process is terminated.

  On the other hand, when it is determined that the print instruction for instructing the start of marking (printing) is not input within a predetermined time, for example, it is determined that the print button 96 shown in FIG. In that case (S19: NO), the CPU 61 proceeds to the process of S21. In S <b> 21, the CPU 61 executes a determination process for determining whether a reset instruction for instructing resetting of print information is input within a predetermined time, for example, within 30 seconds. For example, a determination process for determining whether or not the reset button 97 shown in FIG. 9 has been clicked by the mouse 52 within a predetermined time is executed.

  When it is determined that a reset instruction for instructing resetting of print information is input within a predetermined time, for example, when it is determined that the reset button 97 shown in FIG. 9 is clicked by the mouse 52 within a predetermined time. (S21: YES), the CPU 61 executes the processes after S11 again. On the other hand, if it is determined that the reset instruction for resetting the print information has not been input within the predetermined time, for example, the reset button 97 shown in FIG. When it determines (S21: NO), CPU61 performs the process after S17 again.

  Here, the galvano scanner 18 functions as an example of a laser scanning unit. The fθ lens 19 functions as an example of a light collecting unit. The print information creation device 2 functions as an example of a processing information acquisition unit, a processing condition acquisition unit, a reference print pattern generation unit, a correction unit, a control unit, a corrected print pattern determination unit, and a selection reception unit.

  As described above in detail, in the laser processing apparatus 1 according to the present embodiment, the CPU 61 corrects the scanning speed of the laser light L (pulse laser) based on the driving conditions of the galvano scanner 18, the laser oscillator 21, and the like. The “corrected print dot pattern”, that is, the actual print pattern can be simulated and displayed on the liquid crystal display 56. Therefore, by viewing the “corrected print dot pattern” displayed on the liquid crystal display 56, the user can examine the state and processing conditions that are closer to the actual print quality, and can reduce test printing. It becomes.

  Further, based on each threshold value table stored in the threshold value information storage area, the CPU 61 causes the liquid crystal display 56 to display a warning location corresponding to the “warning” mark in the dot pattern “corrected print dot pattern”. Warning information indicating the warning portion of the displayed “correction print dot pattern”, for example, an arrow-shaped warning mark is displayed. When any warning information indicating a warning location, for example, one of the arrow-shaped warning marks is selected within a predetermined time, the CPU 61 enlarges the display window 101 from the approximate center position of the display screen 56 to the upper part. (See FIG. 10) is displayed.

  Then, the CPU 61 reads out the dot pattern of the portion including the selected warning location from the dot pattern of “correction print dot pattern” from the RAM 62, and displays the enlarged display on the enlarged display window 101 at a predetermined magnification. As a result, the user can select the warning location with the mouse 52 or the like to enlarge the warning location and confirm it. The control parameters such as the scanning speed of the galvano scanner 18 are corrected and corrected again. The print dot pattern can be displayed on the liquid crystal display 56, and actual test printing can be avoided.

  In addition, this invention is not limited to the said embodiment, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention.

For example, the control parameter data file 71 may be acquired from an external storage medium such as a server via a network, or may be read from a portable external storage medium (USB memory or the like). The print information creating apparatus 2 may be a tablet type terminal or a mobile phone terminal connected by wire or wirelessly.
For example, when both the drive parameter 78 and the print parameter 77 are changed, the pattern thickness may be reduced and the number of print patterns may be set to a plurality instead of one.

DESCRIPTION OF SYMBOLS 1 Laser processing apparatus 2 Print information preparation apparatus 3 Laser processing apparatus main-body part 6 Laser controller 7 Processing target object 41, 61 CPU
42, 62 RAM
43, 63 ROM
44, 65 Timer 52 Mouse 53 Keyboard 55 Input operation unit 56 Liquid crystal display (LCD)
66 HDD
71 Control parameter data file 76 Control parameter 77 Print parameter 78 Drive parameter 81 Stop time threshold table 82 Overshoot threshold table 83 Thermal influence threshold table 93 Marking information input screen 95, 105 Corrected print dot pattern 101 Enlarged display window 106 Frame 107 Thick line

Claims (8)

A laser oscillator that emits a pulsed laser;
A laser scanning unit that deflects and scans the pulsed laser emitted from the laser oscillator by a galvano scanner;
In a laser processing apparatus comprising: a condensing unit that condenses the pulse laser scanned by the laser scanning unit and emits the pulsed laser beam toward a workpiece;
Processing information acquisition means for acquiring processing information indicating a shape pattern to be processed into the processing object by the pulse laser;
Processing condition acquisition means for acquiring a processing condition including a material of the processing target and a driving condition of the galvano scanner for deflecting the pulse laser to be processed into the processing target;
A reference print pattern creating means for creating a reference print pattern indicating a scanning locus of the pulse laser to be processed into the processing object from the shape pattern indicated in the processing information;
Correction means for correcting a scanning locus of the pulse laser shown in the reference print pattern based on the processing conditions including a material of the processing object and a driving condition of the galvano scanner, and creating a corrected print pattern; ,
Display control means for displaying the corrected print pattern on a display unit;
Equipped with a,
The correction means creates the correction print pattern with a dot pattern corresponding to a processing mark for each pulse processed every predetermined time or a predetermined time by the pulse laser. apparatus. Comparing the reference print pattern with the correction print pattern, the correction print pattern with respect to the reference print pattern is a warning location where an error of a predetermined threshold value or more occurs, or the tissue changes in the workpiece by the pulse laser. A correction print pattern determination means for determining whether or not there is a warning portion that causes a thermal effect that causes
If the display control means determines that the correction print pattern has the warning location via the correction print pattern determination means, the display control means displays the correction print pattern and the warning location on the display section. The laser processing apparatus according to claim 1, wherein warning information to notify is displayed. The warning information includes a warning mark indicating the warning location,
Comprising selection accepting means for accepting selection of the warning mark;
The display control means, when receiving the selection of the warning mark through the selection receiving means, enlarges the dot pattern of the warning portion corresponding to the warning mark and displays each dot in an identifiable manner. The laser processing apparatus according to claim 2 , wherein the apparatus is a laser processing apparatus. The driving condition of the galvano scanner that deflects the pulse laser includes at least one of a scanning speed and a scanning response of the galvano scanner,
Wherein the correction means is a laser machining apparatus according to any one of claims 1 to 3, characterized in that to correct the dot pattern based on at least one of the scanning responsive to the scanning speed. When the warning location is a location where a thermal effect causing the tissue change occurs, the warning information includes a frame display surrounding the warning location where the thermal effect occurs,
The laser processing apparatus according to any one of claims 2 to 4 , wherein the display control means displays the thermal effect in an identifiable manner based on the warning information. A laser oscillator that emits a pulsed laser;
A laser scanning unit that deflects and scans the pulsed laser emitted from the laser oscillator by a galvano scanner;
In a laser processing apparatus comprising: a condensing unit that condenses the pulse laser scanned by the laser scanning unit and emits the pulsed laser beam toward a workpiece;
Processing information acquisition means for acquiring processing information indicating a shape pattern to be processed into the processing object by the pulse laser;
Processing condition acquisition means for acquiring a processing condition including a driving condition of the galvano scanner for deflecting the pulse laser to be processed into the processing object;
A reference print pattern creating means for creating a reference print pattern indicating a scanning locus of the pulse laser to be processed into the processing object from the shape pattern indicated in the processing information;
Correction means for correcting the scanning locus of the pulse laser indicated in the reference print pattern based on the driving conditions of the galvano scanner of the processing conditions to create a corrected print pattern;
Display control means for displaying the corrected print pattern on a display unit;
Comparing the reference print pattern with the correction print pattern, the correction print pattern with respect to the reference print pattern is a warning location where an error of a predetermined threshold value or more occurs, or the tissue changes in the workpiece by the pulse laser. Correction print pattern determination means for determining whether or not there is a warning portion that causes a thermal effect to cause
With
If the display control means determines that the correction print pattern has the warning location via the correction print pattern determination means, the display control means displays the correction print pattern and the warning location on the display section. Warning information to inform you,
When the warning location is a location where a thermal effect causing the tissue change occurs, the thermal effect is displayed in an identifiable manner by the warning information including a frame display surrounding the warning location where the thermal effect occurs. A laser processing apparatus characterized by the above. A laser oscillator that emits a pulse laser; a laser scanning unit that deflects and scans the pulse laser emitted from the laser oscillator by a galvano scanner; and a pulse laser that is scanned by the laser scanning unit is condensed; A laser processing method that is executed by a laser processing apparatus including a light collecting unit that emits light toward a processing target, a control unit, an operation unit, and a display unit,
Executed by the control unit;
A processing information acquisition step for acquiring processing information indicating a shape pattern to be processed into the processing object by the pulse laser via the operation unit;
A processing condition acquisition step of acquiring a processing condition including the material of the processing target and a driving condition of the galvano scanner for deflecting the pulse laser to be processed into the processing target through the operation unit;
From the shape pattern shown in the processing information acquired in the processing information acquisition step, a reference print pattern creation step of creating a reference print pattern indicating a scanning locus of the pulse laser to be processed into the processing object;
The pulsed laser scanning trajectory shown in the reference print pattern created in the reference print pattern creation step is corrected based on the machining conditions including the material of the workpiece and the driving conditions of the galvano scanner, A correction process for creating a correction print pattern;
A display control step for displaying the corrected print pattern created in the correction step on the display unit;
Equipped with a,
In the correction step, the correction printing pattern is created with a dot pattern corresponding to a processing mark for each pulse or predetermined time processed by the pulse laser on the processing object. Method. A laser oscillator that emits a pulse laser, a laser scanning unit that scans the pulse laser emitted from the laser oscillator, and a pulse laser that is scanned by the laser scanning unit are condensed and emitted toward a workpiece. A computer having a light collecting unit, an operation unit, and a display unit.
A processing information acquisition step for acquiring processing information indicating a shape pattern to be processed into the processing object by the pulse laser via the operation unit;
A processing condition acquisition step of acquiring a processing condition including the material of the processing target and a driving condition of the galvano scanner for deflecting the pulse laser to be processed into the processing target through the operation unit;
From the shape pattern shown in the processing information acquired in the processing information acquisition step, a reference print pattern creation step of creating a reference print pattern indicating a scanning locus of the pulse laser to be processed into the processing object;
The pulsed laser scanning trajectory shown in the reference print pattern created in the reference print pattern creation step is corrected based on the machining conditions including the material of the workpiece and the driving conditions of the galvano scanner, A correction process for creating a correction print pattern;
A display control step for displaying the corrected print pattern created in the correction step on the display unit;
Was executed,
Wherein the correction step, the correction print pattern, one pulse each time it is processed into the workpiece by said pulsed laser, or the order to be executed to create a dot pattern corresponding to the processing marks at predetermined time program.

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