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WO2018123136A1 - Dispositif d'usinage au laser - Google Patents

Dispositif d'usinage au laser Download PDF

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Publication number
WO2018123136A1
WO2018123136A1 PCT/JP2017/030895 JP2017030895W WO2018123136A1 WO 2018123136 A1 WO2018123136 A1 WO 2018123136A1 JP 2017030895 W JP2017030895 W JP 2017030895W WO 2018123136 A1 WO2018123136 A1 WO 2018123136A1
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WO
WIPO (PCT)
Prior art keywords
guide pattern
display
pattern
guide
laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/030895
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English (en)
Japanese (ja)
Inventor
恭生 西川
耕佑 後田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of WO2018123136A1 publication Critical patent/WO2018123136A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
    • B23K26/046—Automatically focusing the laser beam

Definitions

  • the present invention relates to a laser processing apparatus.
  • Patent Document 1 In order to adjust the distance from the converging lens that converges the laser beam for processing to the processing object, the point located at the predetermined distance in the processing object is visible light.
  • a technique for displaying is disclosed.
  • Patent Document 1 and Patent Document 2 do not describe any XY alignment.
  • the present application has been proposed in view of the above problems, and an object thereof is to provide a laser processing apparatus capable of performing XY alignment and Z-direction alignment at the same time.
  • the present specification includes a processing laser light emitting unit that emits processing laser light, a converging lens that converges the processing laser light, and a first guide pattern that is generated from the processing pattern and indicates an XY position at which the processing pattern is processed. And a guide laser beam emitting section for emitting a guide laser beam for displaying a second guide pattern for indicating a Z position at a predetermined distance from the converging lens on the workpiece, and scanning the processing laser beam and the guide laser beam.
  • a visible light source that emits pointer light that displays the Z position in cooperation with the second guide pattern displayed on the object to be processed, and a control unit.
  • the control unit includes the first guide pattern A determination process for determining the display position of the second guide pattern based on the display position of the first display process, and a first display process for displaying the first guide pattern and the second guide pattern It discloses a laser processing apparatus, characterized by the execution. Accordingly, the laser processing apparatus displays the first guide pattern at the XY position and displays the second guide pattern and the pointer light at the Z position, so that the user uses the display of the first guide pattern. The alignment and the Z alignment using the display of the second guide pattern and the display by the pointer light can be performed at the same time.
  • FIG. 4 is a cross-sectional view taken along line AA in FIG. It is a figure explaining the pointer pattern drawn on a processing surface by a diffraction grating. It is a block diagram which shows the electric constitution of a laser processing apparatus. It is a figure which shows a reception screen. It is a figure explaining an XY guide pattern and a Z guide pattern. It is a flowchart which shows the processing content of a process. It is a flowchart which shows the processing content of an XYZ guide pattern display process.
  • a schematic configuration of the laser processing apparatus 1 according to the present embodiment will be described with reference to FIG.
  • a laser processing apparatus 1 according to this embodiment includes a PC (Personal Computer) 2 and a laser controller 5. And a laser processing unit 3.
  • the laser processing unit 3 includes a processing unit casing 7 and a laser head unit 6.
  • the laser processing apparatus 1 performs laser processing for marking characters, symbols, figures, and the like by two-dimensionally scanning the processing surface WA of the processing target object W with the laser light L based on processing data created by the PC 2.
  • laser processing may be described as printing. In the following description, directions shown in FIG. 1 are used.
  • the PC 2 is realized by, for example, a notebook PC, and includes an LCD (Liquid Crystal Display) 61, a keyboard 62, a mouse pad 63, and the like, and accepts a processing command from the user.
  • the laser controller 5 is realized by, for example, a computer and is connected to the laser head unit 6 and the PC 2 so as to be capable of bidirectional communication. The laser controller 5 controls the laser head unit 6 based on the information transmitted from the PC 2.
  • the processing unit housing 7 has a substantially box shape with the front side open, and includes a processing door 65, a support base 66, and the like.
  • the processing door 65 covers the open front surface of the processing unit casing 7, has a rotation center at the left end of the processing unit casing 7, and a release position shown in FIG. 1 from the position where the processing unit casing 7 is closed. Rotate until The support base 66 is installed inside the processing unit housing 7 and has a moving unit 67 on the lower side. The support 66 is moved in the vertical direction by the moving unit 67. Further, a through hole is formed on the upper surface of the processing unit casing 7, and the laser light L emitted from the laser head unit 6 passes through the through hole and is irradiated to the processing target W.
  • the laser head unit 6 includes a laser head unit housing 10, a main body base 11, a laser oscillation unit 12, an optical shutter unit 13 (FIG. 3), an optical damper (not shown), a reflection mirror 14, a dichroic mirror 15 (FIG. 3), It includes an optical sensor (not shown), a guide light unit 17 (FIG. 3), a pointer light emitting unit 18, a galvano scanner 19, an f ⁇ lens 20, and the like.
  • the laser head unit housing 10 has a substantially rectangular parallelepiped shape, and a main body base 11 is fixed inside.
  • the laser oscillation unit 12 includes a laser oscillator 21 and a beam expander 22 and is attached to the main body base 11.
  • the laser oscillator 21 is composed of, for example, a YAG laser, and emits laser light L according to the excitation light emitted from the excitation laser light emitting unit 40 (FIG. 6) incident via the optical fiber F.
  • the beam expander 22 is provided coaxially with the laser oscillator 21 and adjusts the beam diameter of the laser light L.
  • the direction in which the laser oscillator 21 emits the laser beam L is the front direction, and the vertical direction of the laser head unit 6 and the direction orthogonal to the front-rear direction are the left-right direction of the laser head unit 6.
  • the optical shutter unit 13 includes a flat shutter 27 and a shutter motor (not shown).
  • the shutter 27 is attached to the motor shaft of the shutter motor and rotates coaxially.
  • the shutter 27 reflects the laser light L to an optical damper (not shown).
  • a light damper (not shown) absorbs the laser light L reflected by the shutter 27.
  • the shutter 27 is rotated so as not to be positioned on the optical path of the laser light L emitted from the beam expander 22, the laser light L emitted from the beam expander 22 is transmitted to the laser oscillation unit 12 and the light.
  • the light enters the reflection mirror 14 located in front of the shutter unit 13.
  • the reflection mirror 14 is disposed so that the reflection surface is 45 degrees with respect to the optical path of the laser beam L emitted from the laser oscillation unit 12, and the laser beam L incident on the reflection surface is transmitted to the reflection mirror 14. On the other hand, the light is reflected to the dichroic mirror 15 disposed on the left side.
  • the dichroic mirror 15 is disposed so that the reflection surface is 45 degrees with respect to the optical path of the laser light L reflected by the reflection mirror 14, and most of the laser light L incident on the reflection surface is galvano- Reflected toward the scanner 19.
  • the dichroic mirror 15 transmits a part of the laser light L incident on the reflecting surface to an optical sensor (not shown) located on the left side of the dichroic mirror 15.
  • the optical sensor is composed of a photodiode or the like, and a part of the laser light L transmitted through the dichroic mirror 15 is incident thereon.
  • the optical sensor detects the intensity of the laser light L emitted from the laser oscillator 21.
  • the guide light unit 17 is disposed on the rear side of the dichroic mirror 15.
  • the guide light unit 17 includes a guide light laser 28 and a lens group (not shown).
  • the guide light laser 28 is, for example, a red semiconductor laser that emits visible laser light.
  • the lens group converges visible laser light into parallel light.
  • Guide light M which is visible laser light emitted from the guide light portion 17, passes through the dichroic mirror 15 and enters the galvano scanner 19.
  • the optical path of the laser beam L reflected by the dichroic mirror 15 coincides with the optical path of the guide beam M transmitted through the dichroic mirror 15.
  • the galvano scanner 19 is attached to the upper side of the through hole 29 formed at the front end of the main body base 11.
  • the galvano scanner 19 includes a galvano X-axis motor 32, a galvano Y-axis motor 31, a main body 33, and the like.
  • Each of the galvano X-axis motor 32 and the galvano Y-axis motor 31 has a scanning mirror attached to the motor shaft and the tip of the motor shaft.
  • the galvano X-axis motor 32 and the galvano Y-axis motor 31 are attached to the main body 33 so that the motor axes are orthogonal to each other and the scanning mirrors face each other. As each motor 31 and 32 rotates, each scanning mirror rotates.
  • the laser beam L and the guide beam are two-dimensionally scanned on the processing surface WA.
  • the scanning direction is an X direction from the left to the right in the direction of the laser head unit 6 and a Y direction from the front to the rear of the laser head unit 6.
  • the direction from the bottom to the top is the Z direction.
  • the f ⁇ lens 20 is attached to the main body base 11 of the laser head unit 6, and the laser light L that is two-dimensionally scanned by the galvano scanner 19 with respect to the processing surface WA of the processing object W disposed below. And the guide light M is converged on the processing surface WA.
  • the pointer light emitting portion 18 is attached to the right side of the galvano scanner 19 and above the through hole 25 formed in the front end portion of the main body base 11.
  • the pointer light emitting unit 18 includes a pointer light laser 23 and a diffractive optical element 24 (FIG. 4).
  • the pointer light laser 23 is a semiconductor laser that emits visible laser light, for example, red.
  • the diffractive optical element 24 is disposed below the through hole 25.
  • the optical axis of the light emitted from the pointer light laser 23 is inclined with respect to the vertical direction. The light emitted from the pointer light laser 23 passes through the through hole 25 and enters the diffractive optical element 24.
  • Pointer light N that is diffracted light by the diffractive optical element 24 is incident on the processing surface WA.
  • the pointer light N displays a Z position (described later) in cooperation with a Z guide pattern GZ (described later) displayed on the workpiece W.
  • the diffractive optical element 24 is formed so that an image formed on the processing surface WA by the pointer light N becomes a pointer pattern GN shown in FIG.
  • the pointer pattern GN is a pattern in which substantially circular spots GS are arranged at 5 ⁇ 5 in the XY directions at equal intervals in the area of the processing area PA.
  • the pointer light emitting unit 18 includes the diffractive optical element 24, so that a plurality of spots GS can be displayed on the processing surface WA while the light source is one of the pointer light lasers 23.
  • the position RF is the position of the focal plane of the f ⁇ lens 20.
  • the distance between the f ⁇ lens 20 and the position RF is a distance WD.
  • the center line of the f ⁇ lens 20 and the center of the pointer pattern GN coincide at the position RF.
  • the PC 2 includes a control unit 70 and a control circuit 55 in addition to the configuration shown in FIG.
  • the control unit 70 includes a CPU 71, a RAM 72, a ROM 73, an HDD (Hard Disk Drive) 75, and the like.
  • the CPU 71 controls the LCD 61 and the like by executing various programs stored in the ROM 73.
  • the RAM 72 is used as a main storage device for the CPU 71 to execute various processes.
  • the ROM 73 stores a control program, character parameter information, reflectance information, and the like.
  • the character parameter information is parameter information for each font.
  • the HDD 75 stores various application software programs such as processing programs described later, and various data files such as shapes of XY guide patterns GXY and Z guide patterns GZ described later.
  • the CPU 71, RAM 72, and ROM 73 are connected to each other by a bus line (not shown). Further, the CPU 71 and the HDD 75 are connected via an input / output interface (not shown).
  • the control circuit 55 is electrically connected to the control unit 70, the LCD 61, the keyboard 62, and the mouse pad 63, converts an operation received by the keyboard 62 and the mouse pad 63 into a signal, and outputs the signal to the CPU 71. Further, a display screen corresponding to a command from the CPU 71 is displayed on the LCD 61.
  • the laser controller 5 is realized by a computer, for example, and includes a CPU 51, a RAM 52, a ROM 53, and the like.
  • the CPU 51 controls a galvano controller 56, a guide light laser driver 58, a pointer light laser driver 59, and the like, which will be described later, by executing various programs stored in the ROM 53.
  • the RAM 52 is used as a main storage device for the CPU 51 to execute various processes.
  • the CPU 51, RAM 52, and ROM 53 are connected to each other by a bus line (not shown).
  • the laser processing unit 3 includes a power supply unit 4 in addition to the above configuration.
  • the power supply unit 4 includes a power supply unit 42, an excitation laser driver 41, an excitation laser beam emitting unit 40, and the like.
  • the power supply unit 42 is connected to a commercial power supply via a power cord (not shown).
  • the power supply unit 42 converts the supplied AC power into DC power and supplies the power to each part of the laser processing unit 3.
  • the excitation laser driver 41 drives the excitation laser light emitting unit 40 in accordance with a command from the laser controller 5.
  • the excitation laser beam emitting section 40 is optically connected to the laser oscillator 21 via the optical fiber F.
  • the excitation laser beam emitting unit 40 includes a semiconductor laser, and emits excitation laser beam corresponding to the drive current supplied from the excitation laser driver 41 into the optical fiber F.
  • the laser head unit 6 includes a galvano controller 56, a galvano driver 36, a guide light laser driver 58, a pointer light laser driver 59, and the like in addition to the above-described configuration.
  • the galvano controller 56 calculates drive angles, rotational speeds, and the like of the galvano X-axis motor 32 and the galvano Y-axis motor 31 based on XY coordinate data and galvano scanning speed information, which will be described later, input from the laser controller 5.
  • Motor drive information representing the drive angle and rotation speed is output to the galvano driver 36.
  • the galvano driver 36 drives the galvano X-axis motor 32 and the galvano Y-axis motor 31 based on the motor drive information indicating the drive angle and the rotation speed input from the galvano controller 56.
  • the reception screen 90 On the reception screen 90, a menu bar 91, a processing setting button 95, and the like are displayed.
  • the reception screen 90 includes an input button area 92, a height adjustment button area 93, a guide display button area 94, a layout area 96, a detailed setting area 97, and the like.
  • the menu bar 91 displays selection buttons such as a file button, an edit button, and a setting button.
  • a selection button for selecting which character, symbol, figure or the like to be processed to be input is displayed.
  • the height adjustment button area 93 an execution button for accepting height adjustment is displayed.
  • the processing setting button 95 is a button for receiving execution of a processing setting screen for receiving settings such as the output value of the laser light L and the scanning speed of the galvano scanner 19.
  • the layout area 96 is an area that accepts input of a print pattern PP such as characters, symbols, and figures to be processed, and arrangement of the print pattern PP in the processing area.
  • the layout area 96 represents a processing area, and the arrangement position of the input print pattern PP in the layout area 96 is a processing position where the laser beam L is irradiated in the processing area.
  • the right direction of the layout area 96 is the X direction of the machining area, and the upward direction is the Y direction of the machining area.
  • a grid is displayed in the layout area 96.
  • the detail setting area 97 displays buttons for receiving detailed settings in response to selection of the menu bar 91, the input button area 92, the height adjustment button area 93, the guide display button area 94, the processing setting button 95, and the like. It is an area to be done.
  • the “Edit guide pattern” button of the pull-down menu 91a displayed in response to the selection of “Setting” on the menu bar 91 is selected, it is displayed in the detailed setting area 97.
  • the screen which receives the detailed setting of guide pattern edit is shown in figure. Details of the detailed setting area 97 will be described later.
  • FIG. 7 illustrates a case where the user inputs a character string “ABCDE”.
  • the user places the workpiece W on the support base 66.
  • a selection button displayed in the guide display button area 94 is selected.
  • the laser processing apparatus 1 performs guide display. Thereby, the user can align the workpiece W.
  • the user selects a processing execution button (not shown).
  • the laser processing apparatus 1 performs laser processing when a processing execution button is selected.
  • an XY guide pattern GXY that displays the XY position of the print pattern PP on the XY plane and a Z guide pattern GZ that displays the Z position defined by the distance in the Z direction from the f ⁇ lens 20 are displayed.
  • the XY guide pattern GXY and the Z guide pattern GZ are displayed when the guide light M is scanned by the galvano scanner 19.
  • the Z guide pattern GZ is displayed such that the display position of the Z guide pattern GZ coincides with the display position of any spot GS of the pointer pattern GN that is displayed by the pointer light N on the processing surface WA.
  • the spot GS that is the display position of the Z guide pattern GZ is referred to as a specific spot GSA.
  • the display position of the Z guide pattern GZ is the position of the reference position (described later) of the Z guide pattern GZ on the processing surface WA, and the display position of the spot GS is the center position of the spot GS. Therefore, the user moves the processing object W on the support base 66 so that the desired processing position on the processing object W matches the display of the XY guide pattern GXY, and performs XY alignment. Further, the Z alignment is performed so that the specific spot GS is positioned at the reference position of the Z guide pattern GZ.
  • the XY guide pattern GXY is generated from the print pattern PP.
  • the XY guide pattern GXY includes the following three patterns having different shapes.
  • the three patterns are an XY guide pattern GXY1 that is a circumscribed rectangle that is in contact with the outside of the print pattern PP1, and an XY guide pattern GXY0 that is indicated by two line segments in which each vertex of the circumscribed rectangle is extended outward.
  • XY guide pattern GXY2 which is the outline of the character included in print pattern PP1.
  • the broken line of the XY guide pattern GXY0 in FIG. 8 indicates a circumscribed rectangle for explanation, and is not displayed.
  • the user can display an XY guide pattern GXY having a desired shape by selecting a selection button corresponding to the desired shape displayed in the guide display button area 94.
  • FIG. 8 illustrates the Z guide pattern GZ1 that is a triangle, there is a shape such as a figure displayed on a selection button displayed in a guide pattern selection area 97c of FIG.
  • a reference position is set for each shape in the Z guide pattern GZ.
  • the reference position 200 of the Z guide pattern GZ1 is the center of a triangle.
  • the Z guide pattern GZ is displayed such that the reference position of the Z guide pattern GZ coincides with the display position that is the center of the specific spot GSA.
  • the display 100 in FIG. 8 illustrates a case where the display of the XY guide pattern GXY1, the Z guide pattern GZ1, and the spot GS is performed on the processing surface WA.
  • the Z guide pattern GZ is shifted to the left with respect to the specific spot GSA, and the distance from the f ⁇ lens 20 is In the case of the far position RFb, the Z guide pattern GZ is shifted to the right with respect to the specific spot GSA.
  • the display positions of the XY guide pattern GXY and the Z guide pattern GZ are always on the center line of the f ⁇ lens 20.
  • the processing position on the processing target W be placed so as to be the position of the center line of the f ⁇ lens 20. Therefore, depending on the size of the workpiece W and the machining position, the center line of the f ⁇ lens 20 can be obtained even though the size of the workpiece W is large enough to enter the machining unit housing 7. There may be a case where the machining position cannot be placed at the position.
  • the laser processing apparatus 1 can display the display positions of the XY guide pattern GXY and the Z guide pattern GZ at an arbitrary position in the processing area PA, the processing unit housing 7 is made compact as described above. Furthermore, the size of the workpiece W and the restriction on the machining position on the workpiece W can be relaxed.
  • the user can perform alignment with the shape of the workpiece W. For example, when it is desired to perform laser processing on the convex portion of the workpiece W, the user can perform laser processing after confirming the size of the print pattern PP with respect to the convex portion by displaying the XY guide pattern GXY.
  • the laser processing apparatus 1 displays the XY guide pattern GXY at the received position instead of the fixed position.
  • the laser processing apparatus 1 sets the display position of the Z guide pattern GZ as the display position of the spot GS near the display position of the XY guide pattern GXY.
  • the user can perform XY alignment using the display of the XY guide pattern GXY and Z alignment using the display of the Z guide pattern GZ at the same time.
  • the CPU 71 creates print data based on the print information (S1).
  • the print data is XY coordinate data, laser drive current information, and galvano scanning speed information, which are information for printing.
  • the object is a character or a symbol
  • information corresponding to the type of font included in the print information is extracted from the character parameter information stored in the ROM 73, and the size and position included in the print information.
  • XY coordinate data is created and stored in the RAM 72.
  • the XY coordinate data is data in which all the lines of the object are decomposed into line segments and the start point coordinates and end point coordinates are designated for the line segments.
  • laser output of the laser oscillator 21 laser drive current information indicating the laser pulse width of the laser light L
  • galvano scanning speed information indicating the speed at which the galvano scanner 19 scans the laser light L are created.
  • the CPU 71 determines whether or not to perform XYZ guide display (S3).
  • the selection button of the completion button 97d (FIG. 7) is selected, the CPU 71 determines to perform XYZ guide display. If it is determined that XYZ guide display is to be performed (S3: YES), XYZ guide pattern display processing is executed (S9).
  • the XYZ guide pattern display process (FIG. 10) is started, an XYZ guide pattern creation process is executed (S21).
  • the XYZ guide pattern creation process (FIG. 11) is started, the XY guide pattern creation process is executed (S31).
  • the CPU 71 determines whether or not the XY guide pattern GXY is a full line (S41).
  • the full line is an XY guide pattern GXY having an outline of characters included in the print pattern PP as exemplified by the XY guide pattern GXY2 (FIG. 8).
  • the selection button corresponding to the full line displayed in the guide display button area 94 (FIG. 7) is selected, the CPU 71 determines that the XY guide pattern GXY is a full line, and the selection button corresponding to the full line.
  • the XY guide pattern GXY is not a full line. If it is determined that the XY guide pattern GXY is a full line (S41: YES), the outlines of the characters and figures included in the print pattern PP are extracted to create XY guide data (S43), which is stored in the RAM 72. The process is terminated. On the other hand, if it is determined that the processed pattern is not a full line (S41: NO), the XY guide pattern GXY1 is created with the XY guide pattern GXY as the circumscribed rectangle of the print data (S45), stored in the RAM 72, and the process ends.
  • step S31 the coordinate value (Xg, Yg) of the center of gravity of the XY guide pattern GXY is calculated (S33).
  • the center of gravity here is a point where the X value and Y value of all the start point coordinates and end point coordinates included in the print data are summed and divided by the number of coordinates to be the coordinate values (Xg, Yg). is there.
  • Z guide pattern creation processing is executed (S35).
  • the laser processing apparatus 1 displays the detailed setting area 97 having the mode shown in FIG.
  • a “select from drawing area” button hereinafter abbreviated as area selection button
  • area selection button a “select from drawing area” button
  • automatic selection button a “automatic selection near the selected object” button
  • 97b a completion button
  • completion button a cancel button 97e, and the like
  • a plurality of selection buttons are displayed in the guide pattern selection area 97c.
  • a message “Please select a location for height adjustment” is displayed above the area selection button 97a and the automatic selection button 97b from the drawing area.
  • the user can select either the area selection button 97a or the automatic selection button 97b when displaying the Z guide pattern GZ.
  • the user selects the area selection button 97a when he / she wants to specify the display position of the Z guide pattern GZ, and selects the automatic selection button 97b when he / she wants the laser processing apparatus 1 to determine the display position of the Z guide pattern GZ. .
  • the plurality of selection buttons displayed in the guide pattern selection area 97c correspond to the shape of the Z guide pattern GZ.
  • the shape of the Z guide pattern GZ includes, in addition to the triangle described above, a square, a circle, a cross mark, an arrow indicating each of the left, right, up and down directions, a cross, an inverted T character, an inequality sign, and the like.
  • the reference position of the Z guide pattern GZ which is a square, circle, or triangle, is the center of the figure, and the reference positions of the other figures are the intersections of the line segments that make up the figure.
  • the CPU 71 sets the shape corresponding to the selection button selected in the guide display button area 94 as the shape of the XY guide pattern GXY, and sets the shape corresponding to the selection button selected in the guide pattern selection area 97c to the Z guide pattern.
  • the Z guide creation process is started as the shape of the GZ.
  • the CPU 71 determines whether or not there is a pointer light position designation (S51). When the area selection button 97a (FIG. 7) is selected, the CPU 71 determines that the pointer light position is specified, and when the automatic selection button 97b (FIG. 7) is selected, the CPU 71 determines that the pointer light position is not specified.
  • the display position of the Z guide pattern GZ is determined as the specified position (S53), and the process ends.
  • the area selection button 97a is selected, the CPU 71 displays a pointer for accepting the designated position in the layout area 96.
  • the position of the pointer determined by operating the mouse pad 63 is accepted as the designated position.
  • the designated position is set to the position of any spot GS.
  • the distance between the center of gravity and the nearby spot GS is calculated (S55), and the coordinates of the nearest spot GS are set as the display position of the Z guide pattern GZ. Determine (S57).
  • Steps S55 and S57 will be described with reference to FIG.
  • the barycentric position of the print pattern PP2 calculated in step S33 is a position CG1.
  • the CPU 71 classifies each of the plurality of spots GS into one of four quadrants of an orthogonal coordinate system defined with the position CG1 as the origin.
  • the X axis and the Y axis belong to one of the quadrants.
  • the spot GS having the shortest distance from the position CG1 as the origin is extracted.
  • step S57 the coordinates of the spot GS that is closest to the position CG1 among the four extracted spots GS are determined as the display position of the Z guide pattern GZ.
  • the CPU 71 determines whether or not the Z guide pattern GZ and the XY guide pattern GXY overlap, that is, whether or not they intersect (S59). If it is determined that the Z guide pattern GZ and the XY guide pattern GXY do not intersect (S59: NO), the process ends. In this case, the Z guide pattern GZ is displayed at the display position determined in step S57. On the other hand, if it is determined that the Z guide pattern GZ and the XY guide pattern GXY intersect (S59: YES), it is determined whether or not to change the XY guide pattern GXY (S61).
  • the CPU 71 determines whether or not each of the shapes of the XY guide pattern GXY intersects with the Z guide pattern GZ according to the order stored in the HDD 75 in advance. When it is determined that all the shapes of the XY guide pattern GXY intersect, it is determined that the XY guide pattern GXY is not changed. When it is determined that there is an XY guide pattern GXY having a shape that does not intersect, it is determined that the XY guide pattern GXY is changed. . When it is determined that the XY guide pattern GXY is to be changed (S61: YES), the XY guide pattern GXY having a shape that does not intersect is determined to be a pattern to be displayed (S63), and the process ends.
  • the CPU 71 determines whether or not each of the shapes of the Z guide pattern GZ intersects with the Z guide pattern GZ according to the order stored in the HDD 75 in advance. When it is determined that all the shapes of the Z guide pattern GZ intersect, it is determined that the Z guide pattern GZ is not changed. When it is determined that there is a Z guide pattern GZ having a shape that does not intersect, it is determined that the Z guide pattern GZ is changed. . When it is determined that the Z guide pattern GZ is to be changed (S65: YES), the Z guide pattern GZ having a shape that does not intersect is determined as a pattern to be displayed (S67), and the process ends.
  • FIG. 15A is a diagram illustrating a case where YES is determined in step S65 and step S67 is executed.
  • FIG. 15B is determined YES in step S61 and executes step S63. It is a figure explaining a case.
  • the XY guide pattern GXY is a rectangular XY guide pattern GXY3 and the Z guide pattern GZ is a square Z guide pattern GZ2
  • the display of the XY guide pattern GXY3 and the Z guide pattern GZ2 Is crossed and YES is determined in step S59.
  • NO is determined in step S61.
  • the display of the XY guide pattern GXY3 and the display of the Z guide pattern GZ2 intersect. No longer.
  • the XY guide pattern GXY is a rectangular XY guide pattern GXY4 and the Z guide pattern GZ is a square Z guide pattern GZ4
  • the display of the XY guide pattern GXY4 and the Z guide pattern GZ4 Is crossed and YES is determined in step S59.
  • the XY guide pattern GXY5 can be displayed by changing the XY guide pattern GXY4 to the XY guide pattern GXY5 in which each vertex of the circumscribed rectangle is indicated by two line segments. And the display of the Z guide pattern GZ4 do not intersect.
  • the coordinates of the spot GS that is the second closest to the position CG1 among the four spots GS extracted in step S55 are Z
  • the display position of the guide pattern GZ is changed (S69), the process returns to step S59, and steps S59 to S69 are repeated until this process is completed.
  • the display position of the Z guide pattern GZ and the shapes of the Z guide pattern GZ and the XY guide pattern GXY are determined so that the display of the Z guide pattern GZ and the display of the XY guide pattern GXY do not intersect.
  • the display position of the Z guide pattern GZ is set in the vicinity of the display position of the XY guide pattern GXY
  • the display position of the Z guide pattern GZ can be set to a position different from the display position of the XY guide pattern GXY. Since the Z guide pattern GZ and the XY guide pattern GXY are displayed at different positions, the user can easily distinguish between them and can easily recognize them.
  • the laser processing apparatus 1 performs guide display by scanning the guide light M. For this reason, the longer the display positions of the XY guide pattern GXY and the Z guide pattern GZ are, the longer the scanning of the guide light M takes. If it takes a long time to scan the guide light M, the frame rate of the guide display decreases, and blinking is visually recognized, and flickering of the guide display may be easily seen. In this regard, in the laser processing apparatus 1, by setting the display position of the Z guide pattern GZ in the vicinity of the display position of the XY guide pattern GXY, the time required for scanning the guide light M is shortened, and flickering of the guide display is less likely to occur. can do.
  • the CPU 71 finishes the XYZ guide pattern creation processing (FIG. 11) and executes the XYZ guide display (S23, FIG. 10). Specifically, as illustrated in FIG. 7, the circular pattern corresponding to the specific spot GSA determined in the layout pattern 96 in the circular pattern corresponding to the spot GS, the print pattern PP, and the Z guide pattern creation process (S35). , Z guide pattern GZ, XY guide pattern GXY are displayed. Note that the display position of the spot GS is stored in the HDD 75 in advance. Here, the display mode of the circular pattern corresponding to the spot GS and the display mode of the circular pattern corresponding to the specific spot GSA are displayed differently.
  • the display color of the circular pattern corresponding to the spot GS is yellow, and the display color of the circular pattern corresponding to the specific spot GSA is blue. Thereby, the circular pattern corresponding to the specific spot GSA can be easily recognized.
  • blue is indicated by hatching.
  • the CPU 71 displays the XY guide pattern GXY and the Z guide pattern GZ on the processing surface WA. Specifically, based on the XY guide pattern GXY and the Z guide pattern GZ, XY coordinate data is created and transmitted to the laser controller 5.
  • the laser controller 5 controls the galvano controller 56 and the guide light laser driver 58 based on the XY coordinate data.
  • the laser processing apparatus 1 changes the guide display based on the XY guide pattern GXY and the Z guide pattern GZ to the processing surface WA.
  • the pointer light N is displayed on the processing surface WA. Specifically, the CPU 71 instructs the laser controller 5 to cause the pointer light laser 23 to emit visible laser light.
  • the CPU 71 determines whether or not to end the guide display (S29).
  • the cancel button 97e FOG. 7
  • step S5 it is determined whether or not to end the processing. Specifically, when the application for machining processing is terminated on the PC 2, it is determined that the machining processing is to be terminated. If it is determined not to end the processing, the process returns to step S1, and if it is determined to end the processing, the processing ends.
  • the laser processing device 1 is an example of a laser processing device
  • the laser oscillator 21 is an example of a processing laser light emitting unit
  • the f ⁇ lens 20 is an example of a converging lens
  • the guide light unit 17 is a guide laser emitting unit.
  • the galvano scanner 19 is an example of a scanning unit
  • the pointer light emitting unit 18 is an example of a visible light source
  • the CPU 71 and the CPU 51 are examples of a control unit.
  • the diffractive optical element 24 is an example of a diffractive optical element
  • the LCD 61 is an example of a display unit.
  • the laser beam L is an example of a processing laser beam
  • the guide beam M is an example of a guide laser beam
  • the pointer beam N is an example of a pointer beam.
  • the print pattern PP is an example of a processing pattern
  • the XY guide pattern GXY is an example of a first guide pattern
  • the Z guide pattern GZ is an example of a second guide pattern
  • the spot GS is an example of a pointer display.
  • the specific spot GSA is an example of a specific pointer display.
  • the figure corresponding to the spot GS displayed on the LCD 61 is an example of a pointer pattern
  • the figure corresponding to the specific spot GSA displayed on the LCD 61 is an example of a specific pointer pattern.
  • Step S57 is an example of determination processing
  • Steps S25 and S27 are examples of first display processing
  • Step S23 is an example of second display processing
  • Z guide pattern creation processing (S35) is shape determination processing
  • Step S59 is an example of a determination process
  • Step S63 is an example of a change process.
  • the laser processing apparatus 1 displays the XY guide pattern GXY on the processing surface WA of the workpiece W at the XY position of the print pattern PP, and displays the Z guide pattern GZ at the Z position. Further, the CPU 71 sets the display position of the Z guide pattern GZ as the display position of the pointer light N on the processing surface WA. Thereby, the user can perform XY alignment using display of the XY guide pattern GXY and Z alignment using display of the Z guide pattern GZ and display by the pointer light N at the same time.
  • the CPU 71 can suppress the occurrence of flickering during guide display. . Further, in the Z guide pattern creation process (S35), the CPU 71 sets the display position of the Z guide pattern GZ to a position different from the display position of the XY guide pattern GXY. Thereby, since the display of the Z guide pattern GZ and the display of the XY guide pattern GXY are displayed at different positions, the user can easily distinguish the display of the Z guide pattern GZ from the display of the XY guide pattern GXY.
  • the pointer light emitting unit 18 includes the diffractive optical element 24, it is possible to display a plurality of spots GS by the pointer light N on the processing surface WA while making the light source one of the pointer light lasers 23. As a result, the display position of the Z guide pattern GZ can be selected from the plurality of spots GS, so that the degree of freedom of the display position of the Z guide pattern GZ can be increased.
  • step S23 the CPU 71 displays the spot GS on the LCD 61 as yellow and the specific spot GSA as blue. Thereby, the user can specify the specific spot GSA easily.
  • the CPU 71 determines the shape of the Z guide pattern GZ as any one of a plurality of shapes in the Z guide pattern creation processing (S35). Thereby, the shape of Z guide pattern GZ can be made into an optimal shape.
  • the CPU 71 determines the shapes of the Z guide pattern GZ and the XY guide pattern GXY so that the display of the Z guide pattern GZ and the display of the XY guide pattern GXY do not overlap. .
  • the user can easily distinguish between the display of the Z guide pattern GZ and the display of the XY guide pattern GXY.
  • the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention.
  • the display position of the Z guide pattern GZ is determined.
  • the coordinates of the spot GS near the center of gravity are determined as the display position of the Z guide pattern GZ.
  • the present invention is not limited to this.
  • CPU71 is good also as a structure which acquires the process target area
  • the user selects a reception button and designates a processing target area in the layout area 96.
  • the CPU 71 determines the position of the spot GS near the center of gravity as the display position of the Z guide pattern GZ in the received processing target area. According to this configuration, for example, even when the processing position is the end of the processing target W, the display position of the Z guide pattern GZ is within the processing target area, and thus the Z guide pattern GZ is processed.
  • the object W can be reliably displayed.
  • the pointer light emitting unit 18 includes the diffractive optical element 24, a plurality of spots GS are displayed on the processing surface WA by the pointer light N.
  • the configuration of the pointer light emitting unit 18 is as follows. It is not limited to.
  • the pointer light emitting unit may include a visible laser light changing unit that changes the emitting direction of the pointer light N.
  • the visible laser light changing unit has a motor and changes the emission direction of the pointer light N according to a command from the CPU 71.
  • the display position of the Z guide pattern GZ may be a fixed position with respect to the XY guide pattern GXY, such as the negative direction of both the X direction and the Y direction of the XY guide pattern GXY, that is, the lower left.
  • the display position of the Z guide pattern GZ may be a position designated by the user.
  • the display position of the Z guide pattern GZ can be set within a predetermined range with respect to the XY guide pattern GXY regardless of the shape and display position of the XY guide pattern GXY.
  • the display position of any of the plurality of spots GS is set as the display position of the Z guide pattern GZ.
  • the Z guide pattern is not limited to the “display position of the spot GS”. The display position of GZ can be determined. For this reason, the display position of the Z guide pattern GZ can be specified more finely.
  • the display color of the specific spot GSA is described above as different from the display color of the spot GS other than the specific spot GSA (see FIG. 7), but is not limited thereto.
  • the display shape of the specific spot GSA may be different from the display shape of the spot GS other than the specific spot GSA.
  • the specific spot GSA may be displayed as a rhombus, and the spots GS other than the specific spot GSA may be displayed as a circle.
  • the reference position of the Z guide pattern GZ is matched with the center of the specific spot GSA in the focal plane of the f ⁇ lens 20, but the present invention is not limited to this.
  • the reference position of the Z guide pattern GZ is specified at a position at a desired distance from the f ⁇ lens 20. It is good also as a structure matched with the center of the spot GSA.
  • the pointer light emitting unit 18 is exemplified as the visible light source.
  • the present invention is not limited to this, and light other than laser light such as LED may be used.
  • steps S23, S25, and S27 in the XYZ guide pattern display process (S9) is not limited to the above.
  • step S55 the square root of ((Xi ⁇ Xg) 2 + (Yi ⁇ Yg) 2 ) is calculated as the distance from the position CG1, and the closest spot GS is obtained. It is not limited to this. For example, it is possible to calculate the value of ((Xi ⁇ Xg) 2 + (Yi ⁇ Yg) 2 ) in each spot GS without calculating the square root and compare the calculated values to obtain the closest spot GS. good.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

La présente invention a pour but de fournir un dispositif d'usinage au laser (1) qui soit capable d'exécuter un alignement XY et un alignement dans la direction Z en un seul moment. Le dispositif d'usinage au laser (1) affiche, au niveau de la position XY d'un motif d'impression (PP1), un motif de guidage XY (GXY) sur une surface d'usinage (WA) d'un sujet (W) à usiner, et affiche un motif de guidage Z (GZ) sur la même surface d'usinage (WA). La position d'affichage du motif de guidage Z (GZ) est la position d'affichage de la lumière de pointeur (N) sur la surface d'usinage (WA). Par conséquent, un utilisateur peut conduire, en un seul moment, l'alignement XY à l'aide de l'affichage du motif de guidage XY (GXY) et l'alignement de position Z à l'aide de l'affichage du motif de guidage Z (GZ) et de l'affichage effectué à l'aide de la lumière de pointeur (N).
PCT/JP2017/030895 2016-12-26 2017-08-29 Dispositif d'usinage au laser Ceased WO2018123136A1 (fr)

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JP2016250824A JP6693410B2 (ja) 2016-12-26 2016-12-26 レーザ加工装置
JP2016-250824 2016-12-26

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WO2018123136A1 true WO2018123136A1 (fr) 2018-07-05

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JP2023042497A (ja) * 2021-11-17 2023-03-27 株式会社キーエンス レーザ加工装置

Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2005103614A (ja) * 2003-09-30 2005-04-21 Sunx Ltd レーザマーキング装置及びレーザマーキング装置のワークディスタンス調整方法
JP2007061856A (ja) * 2005-08-31 2007-03-15 Keyence Corp レーザ加工装置及びレーザ加工装置の焦点位置指示方法
JP2013146773A (ja) * 2012-01-20 2013-08-01 Panasonic Industrial Devices Sunx Co Ltd レーザ加工装置

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Publication number Priority date Publication date Assignee Title
JP3809998B2 (ja) * 2001-10-15 2006-08-16 サンクス株式会社 ガルバノスキャニング式レーザマーキング装置及びその投影像投射方法。

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005103614A (ja) * 2003-09-30 2005-04-21 Sunx Ltd レーザマーキング装置及びレーザマーキング装置のワークディスタンス調整方法
JP2007061856A (ja) * 2005-08-31 2007-03-15 Keyence Corp レーザ加工装置及びレーザ加工装置の焦点位置指示方法
JP2013146773A (ja) * 2012-01-20 2013-08-01 Panasonic Industrial Devices Sunx Co Ltd レーザ加工装置

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