JP2016034652A - Laser beam apparatus for material processing, processing data generation device, processing data generation method, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser beam apparatus for material processing, a processing data generation device, a processing data generation method, and a computer program capable of arranging a processing pattern with high accuracy even if a laser beam is applied to a larger area than a processable area for machining.SOLUTION: A laser beam apparatus for material processing comprises: a laser beam generation unit; a laser beam scan unit; a laser beam control unit; and a processing data generation unit generating processing data containing processing patterns. The processing data generation unit displays an enlarged setting surface corresponding to an enlarged area wider than a laser beam scan area and arranges the processing patterns thereon. The processing data generation unit receives a plurality of types of setting of a corresponding area corresponding to a magnitude of the scan area on the enlarged setting surface so as to contain all the processing patterns arranged within the enlarged setting surface, and receives setting of a processing order of the patterns to which the laser beam is applied for processing. The processing data generation unit generates processing data for applying the laser beam to the processing patterns for processing for every corresponding area and transmits the processing data to the laser beam control unit, according to the received setting of a processing order.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a laser processing device, a processing data generation device, a processing data generation method, and a computer program that print characters or the like on the surface of a workpiece.

  The laser processing apparatus includes a laser marker having a head and a controller, and a processing data generation apparatus that generates processing data in accordance with a user instruction. The processing data generated by the processing data generation device includes information such as the content of the character string to be laser processed, the position to be processed, and the size of the character string to be processed.

  The user inputs various information necessary for laser processing, such as designating the arrangement of the processing pattern to be laser processed while visually confirming the setting plane displayed on the display device of the processing data generation device. The laser marker performs desired laser processing by performing on / off control of laser light, galvano control, and the like based on various types of input information.

  Here, the setting plane means a plane defined as orthogonal coordinates having the X and Y directions of the laser marker as coordinate axes, and is a two-dimensional scanning region (processing region) of the laser beam irradiated by the laser marker. It is a plane corresponding to a possible area. That is, the specific position on the setting plane is associated with the specific position in the workable area on a one-to-one basis (see Patent Document 1).

JP 2009-078280 A

  However, when laser processing is performed on an area larger than the processable area, the user places a processing pattern obtained by dividing the processing pattern on a set plane for each processable area while imagining the enlarged area. There is a need. Since it is necessary to arrange a processing pattern for each processable area, the operation is complicated, and it is difficult to reliably maintain continuity at a contact portion of the processable area.

  The present invention has been made in view of such circumstances, and even when laser processing is performed on an area larger than the processable area, the operation is the same as that for arranging a processing pattern in one processable area. An object of the present invention is to provide a laser processing apparatus, a processing data generation apparatus, a processing data generation method, and a computer program capable of arranging processing patterns with high accuracy.

  In order to achieve the above object, a laser processing apparatus according to a first aspect of the present invention includes a laser light generating unit that emits laser light, a laser light scanning unit that scans a surface of a workpiece placed two-dimensionally with laser light, A laser processing apparatus having a laser beam control unit that performs laser processing of a processing pattern on the workpiece positioned in a laser light scanning region, and a processing data generation unit that generates processing data including the processing pattern. The processing data generation unit includes an enlargement setting plane display means for displaying an enlargement setting plane corresponding to an enlargement region wider than the scanning region of the laser light, and a processing pattern for arranging the processing pattern on the enlargement setting plane. All the processing patterns arranged in the enlargement setting plane are arranged with arrangement means and a corresponding area setting corresponding to the size of the scanning area on the enlargement setting plane. A plurality of corresponding area setting accepting means for receiving, a processing order setting accepting means for accepting a setting of a processing order for laser processing for each of the plurality of corresponding areas for which the setting has been accepted, and the processing order for accepting the setting A processing data generating unit that generates processing data for laser processing the processing pattern for each corresponding region; and a processing data transmitting unit that transmits the generated processing data to the laser light control unit. To do.

  The laser processing apparatus according to a second aspect of the present invention is the laser processing apparatus according to the first aspect, wherein the corresponding area setting accepting unit accepts a plurality of different reference coordinate settings on the enlarged setting plane, and the plurality of the reference coordinates are based on the reference coordinates. It is characterized by accepting setting of a corresponding area.

  The laser processing apparatus according to a third aspect of the present invention is the laser processing apparatus according to the second aspect, wherein the corresponding area setting receiving unit includes a position adjustment receiving unit that receives the adjustment of the reference coordinates on the enlarged setting plane based on a user operation. It is characterized by that.

  According to a fourth aspect of the present invention, in the laser processing apparatus according to the second aspect of the invention, the corresponding area setting accepting unit includes an inclination adjustment accepting unit that accepts an adjustment of the inclination of the corresponding area that has received the setting based on a user operation. It is characterized by that.

  The laser processing apparatus according to a fifth aspect of the present invention is the laser processing apparatus according to any one of the first to fourth aspects, wherein the processing order setting accepting means performs processing that performs laser processing in the order in which the plurality of corresponding areas are specified. An order setting is accepted.

  The laser processing apparatus according to a sixth aspect of the present invention is the laser processing apparatus according to any one of the first to fifth aspects, wherein the processing pattern arranging means arranges count characters that are counted up at regular intervals as the processing pattern, The corresponding area setting accepting unit accepts a plurality of corresponding area settings including a processing pattern obtained by dividing the count character.

  Next, in order to achieve the above object, a machining data generating apparatus according to a seventh aspect of the present invention includes a laser beam generator that emits a laser beam, and a laser beam that scans the surface of the placed workpiece two-dimensionally with the laser beam. Connected to the scanning unit and a laser beam control unit that performs laser machining of the machining pattern on the workpiece positioned in the laser beam scanning area so as to be capable of data communication, and generates machining data including the machining pattern An enlarged setting plane display means for displaying an enlarged setting plane corresponding to an enlarged area wider than the scanning area of laser light, and a processed pattern for arranging the processed pattern on the enlarged setting plane An arrangement unit and setting of a corresponding area corresponding to the size of the scanning area on the enlargement setting plane includes all the processing patterns arranged in the enlargement setting plane; In accordance with the processing area setting receiving means for receiving a plurality of processing orders, the processing order setting receiving means for receiving the setting of the processing order for laser processing for each of the plurality of corresponding areas for which the setting has been received, and the processing order for receiving the settings, A processing data generating unit that generates processing data for laser processing the processing pattern for each corresponding region, and a processing data transmitting unit that transmits the generated processing data to the laser light control unit. .

  Next, in order to achieve the above object, a machining data generation method according to an eighth aspect of the present invention includes a laser beam generator that emits a laser beam and a laser beam that scans the surface of the placed workpiece two-dimensionally with the laser beam. Connected to the scanning unit and a laser beam control unit that performs laser machining of the machining pattern on the workpiece positioned in the laser beam scanning area so as to be capable of data communication, and generates machining data including the machining pattern A machining data generation method that can be executed by the machining data generation device, wherein the machining data generation device displays an enlarged setting plane corresponding to an enlarged area wider than the scanning area of the laser beam; Arranging the processing pattern on the enlargement setting plane and setting of a corresponding area corresponding to the size of the scanning area on the enlargement setting plane are arranged in the enlargement setting plane. In accordance with the step of receiving a plurality of the processing patterns so as to include all of the processed patterns, the step of receiving a setting of a processing order for laser processing for each of the plurality of corresponding regions for which the setting has been received, and the processing order of receiving the settings The method includes a step of generating processing data for laser processing the processing pattern for each corresponding region, and a step of transmitting the generated processing data to the laser light control unit.

  Next, in order to achieve the above object, a computer program according to a ninth aspect of the present invention includes a laser beam generator that emits laser beam, and a laser beam scanner that scans the surface of the placed workpiece two-dimensionally with the laser beam. And a laser beam control unit that performs laser processing of a processing pattern on the workpiece positioned in the laser beam scanning region so as to be able to communicate data and generate processing data including the processing pattern A computer program that can be executed by a data generation device, wherein the processing data generation device displays an enlargement setting plane display unit that displays an enlargement setting plane corresponding to an enlargement region wider than the scanning region of laser light, Processing pattern arranging means for arranging the processing pattern on the enlargement setting plane, and a corresponding area corresponding to the size of the scanning area on the enlargement setting plane Corresponding region setting receiving means for receiving a plurality of settings so as to include all the processing patterns arranged in the enlargement setting plane, and a processing order of laser processing for each of the plurality of corresponding regions for which settings have been received. Processing order setting reception means for receiving settings, processing data generation means for generating processing data for laser processing the processing pattern for each of the corresponding areas in accordance with the processing order received for settings, and the generated processing data for the laser It is made to function as a process data transmission means transmitted to an optical control part.

  In the first invention, the seventh invention, the eighth invention, and the ninth invention, an enlarged setting plane corresponding to an enlarged area wider than the scanning area of the laser beam is displayed, and a processing pattern is arranged on the enlarged setting plane. Accepts settings so that multiple corresponding areas corresponding to the size of the scanning area on the enlargement setting plane include all processing patterns arranged in the enlargement setting plane, and for each of the corresponding areas that have received settings, The setting of the processing order for laser processing is accepted. Processing data for laser processing the processing pattern is generated for each corresponding region in accordance with the processing order for which the setting has been received, and the generated processing data is transmitted to the laser light control unit. As a result, a processing pattern is arranged in an enlarged area wider than the scanning area in the same manner as in the past, and when laser processing is performed, laser processing (printing) is performed for each corresponding area having the same size as the normal scanning area (printing area). )can do. Therefore, it is possible to determine the arrangement of the processing patterns while being conscious of the whole, and it is possible to easily ensure continuity at the boundary of the corresponding area.

  In the second invention, since the setting of a plurality of different reference coordinates is received on the enlargement setting plane and the setting of a plurality of corresponding areas is accepted based on the reference coordinates, it is possible to freely set the corresponding area in the enlargement setting plane. It is possible to set the corresponding area around the area to be laser processed.

  In the third invention, since the adjustment of the reference coordinates is accepted on the enlargement setting plane based on the user operation, the corresponding area can be freely set in the enlargement setting plane, and the corresponding area is set around the laser processing area. It becomes possible to set.

  In the fourth invention, since the adjustment of the inclination of the set corresponding area is accepted based on the user operation, the corresponding area can be freely set within the enlargement setting plane, and the area to be laser-processed is surely included. It is possible to set the corresponding area.

  In the fifth aspect of the invention, since the setting of the processing order for laser processing is received in the order in which the plurality of corresponding areas are specified, the processing order can be arbitrarily set even for discontinuous corresponding areas for laser processing. It becomes possible.

  In the sixth invention, count characters that are counted up at regular intervals are arranged as processing patterns, and setting of a plurality of corresponding areas including processing patterns obtained by dividing the count characters is accepted, so the count characters are printed on the enlarged setting plane. Then, by dividing into corresponding areas, even if the count skip occurs in the corresponding area, it is possible to print correctly without complicated control. Here, the count character means a character that is incremented by "1" every time it is printed, such as numerals 1, 2, 3,.

  According to the present invention, when a machining pattern is arranged in an enlarged area wider than the scanning area in the same manner as in the prior art and laser machining is performed, each corresponding area having the same size as the normal scanning area (printing area) is subjected to laser. Can be processed (printed). Therefore, it is possible to determine the arrangement of the processing patterns while being conscious of the whole, and it is possible to easily ensure continuity at the boundary of the corresponding area.

It is a block diagram which shows typically the structure of the laser processing apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure in the case of using a solid state laser marker of the laser processing apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure in the case of using the fiber laser marker of the laser processing apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure at the time of using control parts, such as CPU, of the process data generation apparatus of the laser processing apparatus which concerns on embodiment of this invention. It is a functional block diagram of the processing data generation device concerning an embodiment of the invention. It is a schematic diagram which shows an example of the expansion setting plane of the process data generation apparatus which concerns on embodiment of this invention. It is a schematic diagram which shows the example of a setting of the corresponding | compatible area | region of the process data generation apparatus which concerns on embodiment of this invention. It is an illustration figure of the setting screen of the corresponding | compatible area | region of the process data generation apparatus which concerns on embodiment of this invention. It is an illustration figure of the setting screen of the corresponding | compatible area | region of the process data generation apparatus which concerns on embodiment of this invention. It is an illustration figure of the setting screen of the corresponding | compatible area | region of the process data generation apparatus which concerns on embodiment of this invention. It is an illustration figure of the display state of the corresponding | compatible area | region of the process data generation apparatus which concerns on embodiment of this invention. It is a flowchart which shows the procedure of the setting process of the corresponding area | region of CPU of the process data generation apparatus which concerns on embodiment of this invention. It is an illustration figure of the setting process of a rectangular area. It is an illustration figure of the position and inclination adjustment screen of the corresponding | compatible area | region of the process data generation apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows the state of the counter printing using a count character. It is a flowchart which shows the process sequence of CPU of the process data generation apparatus which concerns on embodiment of this invention. It is a schematic diagram which shows the structure which controls the operation | movement of the marking head and stage which concern on embodiment of this invention.

  Hereinafter, a laser processing apparatus according to an embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of a laser processing apparatus according to an embodiment of the present invention.

  As shown in FIG. 1, a laser processing apparatus 10 according to the present embodiment includes a marking head (laser beam scanning unit) 1 and a controller (laser beam generation unit and laser beam control unit) that controls the operation of the marking head 1. 2 and a processing data generation device (processing data generation unit) 3 connected so as to be capable of data communication with the controller 2. The machining data generation device 3 transmits the machining data to the controller 2. The machining data generation device 3 is preferably composed of a computer installed with a program for generating machining data, a programmable logic controller (PLC), and the like.

  Various external devices 4 are connected to the controller 2 as necessary. Examples of the external device 4 include an image recognition device 401 such as an image sensor for confirming the type and position of the workpiece W conveyed on the line, a displacement meter for acquiring information on the distance between the workpiece W and the marking head 1, and the like. The distance measuring device 402, the PLC 403 that controls the device according to a predetermined sequence, the PD sensor that detects the passage of the workpiece W, various other sensors, and the like can be exemplified.

  The laser processing apparatus 10 sets a processing pattern to be processed on the surface of the workpiece W, and processes the surface of the workpiece W. FIG. 2 is a block diagram showing the configuration of the laser processing apparatus 10 according to the embodiment of the present invention when a solid laser marker is used. Processing means the marking of characters, symbols, figures, etc., specifically hiragana, katakana, kanji, alphabet, numbers, symbols, pictograms, icons, logos, barcodes, two-dimensional codes, etc. Includes graphics.

  The laser processing apparatus 10 includes a controller 2 (including a laser light generation unit 200 and a laser light control unit 201) and a marking head 1 (laser output unit 202), and a laser of a laser oscillation unit 204 included in the laser output unit 202. The laser beam Lb oscillated by the medium 206 is scanned on the surface of the workpiece W in a two-dimensional manner to process the surface of the workpiece W. The processing signal for controlling the processing operation is an on / off signal of the laser beam Lb, and is a PWM signal corresponding to one pulse of the laser beam Lb from which one pulse is oscillated. The PWM signal can define the laser intensity based on a duty ratio corresponding to the frequency. As a modification, the laser intensity may be defined by the scanning speed based on the frequency.

  The laser light generation unit 200 includes a laser excitation light source 208 and a condensing unit 210, and a constant pressure power source is supplied from the power source to the laser excitation light source 208. The laser excitation light source 208 is constituted by a semiconductor laser, a lamp, or the like. Specifically, the laser excitation light source 208 is configured by a laser diode array in which a plurality of semiconductor laser diode elements are arranged in a straight line, and laser oscillation from each element is output in a line shape. Is incident on.

The laser beam generator 200 and the laser output unit 202 are connected by an optical fiber cable 212, and the laser excitation light generated by the laser beam generator 200 is incident on the laser medium 206 described above. The laser medium 206 is composed of a rod-shaped solid laser medium (for example, Nd: YVO ₄ ), is excited by inputting laser excitation light from one end face, and emits a laser beam Lb from the other end face, so-called end pumping. The excitation method by is adopted. The laser medium 206 may be configured such that the wavelength of the laser beam Lb to be output can be converted to an arbitrary wavelength by combining a solid-state laser medium with a wavelength conversion element.

  The laser medium 206 may be formed of a wavelength conversion element that performs only wavelength conversion without using a resonator that oscillates a laser beam, instead of the solid-state laser medium described above. In this case, wavelength conversion may be performed on the output light of the semiconductor laser.

Examples of the wavelength conversion element include KTP (KTiPO ₄ ), organic nonlinear optical materials and other inorganic nonlinear optical materials such as KN (KNbO ₃ ), KAP (KAsPO ₄ ), BBO, LBO, and bulk polarization inversion elements (LiNbO). ₃ (Periodically Polled Lithium Niobate: PPLN), LiTaO _3, etc.) can be used. Further, a semiconductor laser for an excitation light source of a laser by up-conversion using a fluoride fiber doped with rare earth such as Ho, Er, Tm, Sm, and Nd can be used.

  The laser output unit 202 includes the above-described laser oscillation unit 204 that generates the laser beam Lb. The laser oscillation unit 204 includes an output mirror and a total reflection mirror that face each other at a predetermined distance along the optical path of the stimulated emission light emitted from the laser medium 206 described above, an aperture disposed between them, and a Q A switch is provided. The stimulated emission light emitted from the laser medium 206 is amplified by multiple reflection between the output mirror and the total reflection mirror, and the mode is selected by the aperture while being cut off in a short period by the operation of the Q switch, and the output mirror is Then, the laser beam Lb is output.

As the laser oscillation unit 204, a gas laser system using a gas such as CO ₂ , helium-neon, argon, or nitrogen as a medium may be employed. For example, when a carbon dioxide laser is used, the laser oscillation unit 204 is filled with carbon dioxide (CO ₂ ) inside the laser oscillation unit 204 including the built-in electrode, and the carbon dioxide gas is produced by the built-in electrode based on a processing signal given from the controller 2. Is excited to cause laser oscillation.

  The laser beam scanning system 220 includes a beam expander 242 that incorporates a Z-axis scanner whose optical path coincides with the laser oscillation unit 204, an X-axis scanner 224, and a Y-axis scanner 226 that is arranged to be orthogonal to the X-axis scanner 224. With. The laser beam scanning system 220 causes the X-axis scanner 224 and the Y-axis scanner 226 to scan the laser beam Lb emitted from the laser oscillation unit 204 two-dimensionally in the work area on the surface of the workpiece W.

  The X-axis scanner 224 and the Y-axis scanner 226 are galvano motors 224b for rotating with galvano mirrors 224a, 226a, galvano mirrors 224a, 226a, which are total reflection mirrors, as reflecting surfaces that reflect light. 226b, and a position detection unit that detects the rotation position of the rotation shaft and outputs it as a position signal. The X-axis scanner 224 and the Y-axis scanner 226 are connected to the scanner drive circuit 228. The scanner driving circuit 228 is connected to the controller 2 and drives the X-axis scanner 224 and the Y-axis scanner 226 based on a control signal supplied from the controller 2.

  The beam expander 242 adjusts the spot diameter of the laser beam Lb emitted from the laser medium 206. By adjusting the spot diameter, the working distance (focal length) can be adjusted. That is, by changing the relative distance between the entrance lens and the exit lens by the beam expander 242, the beam diameter of the laser beam Lb can be enlarged / reduced, and the focal position can be changed.

  By controlling the operations of the beam expander 242, the X-axis scanner 224, and the Y-axis scanner 226, the laser beam Lb can be scanned while adjusting the working distance. Therefore, it is possible to perform processing with high accuracy and the minimum spot in a state where the focal length is adjusted with respect to the surface of the workpiece W.

  FIG. 3 is a block diagram showing the configuration of the laser processing apparatus 10 according to the embodiment of the present invention when a fiber laser marker is used. As shown in FIG. 3, the laser processing apparatus 10 includes a controller 2 and a marking head 1, and the processing data generation apparatus 3 connected to the controller 2 receives an input of processing conditions and the like of the workpiece W, and displays The input / output means includes a display unit for displaying a parameter setting screen corresponding to the machining conditions.

  The controller 2 includes a laser oscillator unit including a main control circuit 508, a workpiece machining information storage unit 510, a power supply circuit 512, an excitation light source 514, and a laser beam amplifier 516. The controller 2 controls laser oscillation and laser beam scanning. Etc. are executed. The excitation light source 514 includes a light emitting element such as an LD (laser diode) that generates excitation light for exciting the laser medium, and a condenser lens.

  The laser beam amplifier 516 includes an optical fiber in which a laser medium is added to the core. By amplifying the laser beam using the laser beam amplifier 516, a high-power laser beam with high energy density can be generated. The laser beam amplifier 516 includes a master oscillator unit that generates low-output seed light, a power amplifier unit that amplifies the seed light, a pumping light source device, an isolator, and the like. The master oscillator unit and the power amplifier unit serve as a laser medium. It is composed of a rare earth-doped optical fiber to which a rare earth element such as ytterbium (Yb) is added.

  The controller 2 and the marking head 1 are connected by an optical fiber cable 520, and the laser beam amplified by the laser beam amplifier 516 is directly input to the optical fiber cable 520.

  The marking head 1 includes an optical isolator 522, a beam expander 524, a beam sampler 526, a shutter 528, a photo interrupter 530, a dichroic mirror 532, a Z axis scanner 534, an X axis / Y axis scanner 536, a power monitor 538, and a guide light source 540. Including.

  The optical isolator 522 constitutes return light suppression means that transmits the laser beam emitted from the end face of the optical fiber cable 520 and suppresses the return light. The optical isolator 522 transmits the laser beam transmitted via the optical fiber cable 520 to the beam expander. Transmission in the forward direction input to 524 is allowed, and transmission in the reverse direction is prohibited. The optical isolator 522 includes, for example, an aperture, a polarizer, and a Faraday rotator. The aperture is a blocking plate for limiting the passing light. The polarizer is a rod-shaped optical element made of a birefringent crystal. A Faraday rotator is a magneto-optical element that rotates a plane of polarization by applying a magnetic field.

  The beam expander 524 constitutes a beam diameter varying unit that variably controls the beam diameter of the laser beam, and is arranged with the optical axis of the optical isolator 522 aligned. The beam expander 524 includes a plurality of lenses arranged on the optical path, and converts the beam diameter to a desired value by adjusting the distance between the lenses. The beam sampler 526 is an optical element that reflects part of the laser beam that has passed through the beam expander 524 toward the dichroic mirror 532 and transmits the other part to the power monitor 538 side.

  The power monitor 538 is a laser power detection sensor that receives the laser beam that has passed through the beam sampler 526 and detects the laser power. The power monitor 538 uses the detection result of the laser power as a power level detection signal to the main control circuit 508 in the controller 2. Output. As the power monitor 538, for example, a thermopile (thermoelectric stack), a photodiode, or the like is used.

  The shutter 528 is a blocking device for blocking the laser beam as necessary, and includes a blocking plate and a drive mechanism that moves the blocking plate. The shutter 528 is disposed between the beam sampler 526 and the dichroic mirror 532.

  The photo interrupter 530 is an optical sensor that optically detects whether or not the shutter 528 is closed. The dichroic mirror 532 is an optical element that reflects only light of a specific wavelength and transmits light of other wavelengths. The dichroic mirror 532 reflects the laser beam that has passed through the shutter 528 toward the Z-axis scanner 534 and emits light from the guide light source 540. The guide light is transmitted as it is.

  The Z-axis scanner 534 is a laser beam scanning mechanism including one or two or more lenses arranged on an optical path and a lens driving motor for moving the lens. By displacing the lens, the marking head 1 The focal position of the laser beam emitted from can be adjusted in the optical axis direction. The Z-axis scanner 534 has a laser beam condensing function. The Z-axis scanner 534 is a scanning mechanism that can move the focal position of the laser beam in the optical axis direction following the height of the workpiece W.

  The X-axis / Y-axis scanner 536 is a laser beam scanning mechanism composed of two galvanometer mirrors arranged on intersecting rotation axes and a galvanometer mirror driving motor for rotating the galvanometer mirror. By rotating the axis, the laser beam is scanned in a direction intersecting the optical axis. Here, the optical axis direction of the laser beam irradiated onto the processing target surface is referred to as the Z-axis direction, and the two non-parallel directions intersecting the optical axis are referred to as the X-axis direction and the Y-axis direction, respectively.

  The laser beam that has passed through the Z-axis scanner 534 is reflected by the galvanometer mirror of the X-axis / Y-axis scanner 536 and applied to the workpiece W. The guide light source 540 is a light source device that generates guide light for visualizing the irradiation position of the laser beam Lb on the workpiece W. Guide light emitted from the guide light source 540 passes through the dichroic mirror 532 and enters the optical path of the laser beam. The guide light that has entered the optical path of the laser beam is applied to the workpiece W via the Z-axis scanner 534 and the X-axis / Y-axis scanner 536.

  The workpiece machining information storage unit 510 of the controller 2 is a memory that holds information relating to laser machining of the workpiece W as workpiece machining information. As workpiece machining information, processing line drawing information when characters or the like are machined on the workpiece W. Laser output control information for controlling laser oscillation is held.

  The main control circuit 508 includes an excitation light source 514, a laser beam amplifier 516, a Z-axis scanner 534, an X-axis / Y-axis scanner 536, and a shutter 528 based on the workpiece machining information held in the workpiece machining information storage unit 510. A control means for controlling, specifically, generating an oscillator control signal for adjusting the peak power and pulse width of the laser beam emitted from the marking head 1 on the basis of the laser output control information; Control signals are output to 514 and the laser beam amplifier 516.

  The main control circuit 508 controls the lens driving motor of the Z-axis scanner 534, the mirror driving motor of the X-axis / Y-axis scanner 536, and the shutter 528 based on the laser output control information and the drawing information. , And various control signals are output to the Z-axis scanner 534, the X-axis / Y-axis scanner 536, and the shutter 528.

  FIG. 4 is a block diagram showing the configuration of the machining data generation device (machining data generation unit) 3 according to the embodiment of the present invention when a control unit such as a CPU is used. As shown in FIG. 4, the machining data generation device 3 according to the present embodiment includes at least a CPU (control unit) 31 that executes a control program that controls operations, a memory 32, a storage device 33, an I / O interface 34, A video interface 35, a portable disk drive 36, a communication interface 37, and an internal bus 38 are provided.

  The CPU 31 is connected to the above-described hardware units of the machining data generation device 3 via the internal bus 38, controls the operation of the above-described hardware units, and stores the computer program stored in the storage device 33. According to 100, various software functions are performed. The memory 32 is composed of a volatile memory such as SRAM or SDRAM, and a load module is expanded when the computer program 100 is executed, and stores temporary data generated when the computer program 100 is executed.

  The storage device 33 includes a built-in fixed storage device (hard disk), a ROM, and the like. The computer program 100 stored in the storage device 33 is downloaded by a portable disk drive 36 from a portable recording medium 90 such as a DVD or CD-ROM in which information such as programs and data is recorded, and from the storage device 33 at the time of execution. It is expanded into the memory 32 and executed. Of course, a computer program downloaded from an external computer connected via the communication interface 37 may be used.

  The communication interface 37 is connected to the internal bus 38 and can perform data communication by being connected to the controller 2 via a connection line. Specifically, the machining data is transmitted to the controller 2. Of course, it may be connected to an external computer via the Internet or the like, and for example, a computer program or the like may be downloaded.

  The I / O interface 34 is connected to input devices such as a keyboard 41 and a mouse 42, and receives input of data to be processed on the surface of the workpiece W (processing data). The video interface 35 is connected to a display device 43 such as an LCD and displays a screen for receiving data input and a state of a character string processed on the surface of the workpiece W.

  FIG. 5 is a functional block diagram of the machining data generation device (machining data generation unit) 3 according to the embodiment of the present invention. The enlargement setting plane display means 301 of the machining data generation device 3 of the laser processing apparatus 10 according to the present embodiment displays an enlargement setting plane (enlargement area) corresponding to an enlargement area wider than the laser light scanning area.

  FIG. 6 is a schematic diagram illustrating an example of an enlarged setting plane of the machining data generation device 3 according to the embodiment of the present invention. As shown in FIG. 6, an enlargement setting plane 62 wider than the laser light scanning region 61 is set. FIG. 6 shows an example in which an enlargement setting plane having a width corresponding to four scanning areas 61 is set and displayed on the display device 43.

  Returning to FIG. 5, the processing pattern arranging unit 302 arranges the processing pattern on the enlargement setting plane 62. As shown in the example of FIG. 6, the processing pattern is arranged on the enlargement setting plane 62 in the same manner as the processing pattern is arranged in the conventional scanning region 61. Even when the processing pattern is arranged in a region larger than the scanning region 61 as in the prior art, the processing pattern may be arranged for the entire enlargement setting plane 62. Therefore, the processing pattern is divided for each scanning region 61. However, it is not necessary to arrange them, and it is not necessary to finely correct the position of the processing pattern after processing.

  The corresponding area setting accepting unit 303 accepts a plurality of settings of the corresponding area 63 corresponding to the size of the scanning area 61 on the enlargement setting plane 62 so as to include all the processing patterns arranged in the enlargement setting plane 62. FIG. 7 is a schematic diagram illustrating a setting example of the corresponding area 63 of the machining data generation device 3 according to the embodiment of the present invention.

  For example, as shown in FIG. 7A, the corresponding region 63 may be set so that the enlargement setting plane 62 is equally divided into the same area. In this case, a processing order indicating the processing order may be specified at the same time. In Fig.7 (a), the number with a circle | round | yen has shown the process order.

  Further, as shown in FIG. 7B, a plurality of corresponding regions 63 having the same area in which the enlargement setting plane 62 is matched to the processing pattern may be set. Also in this case, the processing order indicating the processing order may be specified at the same time. In FIG.7 (b), the number with a circle | round | yen has shown the process order.

  Specifically, the setting of a plurality of different reference coordinates is received on the enlargement setting plane 62, and the setting of a plurality of corresponding areas 63 is received based on the reference coordinates for which the setting has been received. 8 to 10 are examples of setting screens for the corresponding area 63 of the machining data generation device 3 according to the embodiment of the present invention.

  FIG. 8 is an exemplary view of a setting screen for setting an area of the enlargement setting plane 62. Accepts input of vertical and horizontal sizes of the area of the enlargement setting plane.

  FIG. 9 is an exemplary view of an editing screen for arranging the processing pattern of the enlarged setting plane 62 that has received the setting. As shown in FIG. 9, the set enlargement setting plane 62 is displayed in the editing area 91. In the block display setting area 92, settings such as characters and figures to be displayed are received in units of blocks, and a display position setting area is displayed. In 93, the setting of the position information to be displayed is received in units of blocks.

  FIG. 10 is a view showing an example of a setting screen for accepting the setting of the size and number of corresponding areas 63. In the example of FIG. 10, the setting of the number and size of the corresponding regions 63 is received so as to include all the processing patterns arranged in the enlargement setting plane 62.

  With these settings, the corresponding area 63 is displayed in the enlargement setting plane 62, so that the user adjusts the position and inclination of the corresponding area 63 by a drag-and-drop operation with the mouse 42 or direct keystroke with the keyboard 41. Specifically, the position information (coordinate values) received in the display position setting area 93 is set as the reference coordinates, and the corresponding area 63 is displayed around the reference coordinates.

  Returning to FIG. 5, the position adjustment accepting unit 304 moves the corresponding region 63 by accepting an input of a coordinate value obtained by adjusting the coordinate position by operating the keyboard 41 or accepting a drag and drop operation by the mouse 42. Let In addition, an inclination adjustment receiving unit 305 may be provided to adjust the inclination of the corresponding area 63.

  FIG. 11 is a view showing an example of the display state of the corresponding area 63 of the machining data generation device 3 according to the embodiment of the present invention. In the example of FIG. 11, the setting is accepted in the order of the corresponding areas 63a and 63b including a part of the English character string and the corresponding area 63c including a star-shaped figure. A processing order setting receiving unit 306 described later automatically sets a processing order for laser processing for each of the plurality of corresponding regions 63 for which the setting has been received.

  The corresponding area 63 may be automatically set. Various methods for setting the corresponding area 63 are conceivable. For example, the corresponding area 63 may be set without a gap in order from the upper left of the enlargement setting plane 62. However, the machining time can be shortened as the number of the corresponding regions 63 is small. Therefore, in the present embodiment, the number of corresponding areas 63 is set as small as possible by the following procedure.

  FIG. 12 is a flowchart showing the procedure of the corresponding area 63 setting process of the CPU 31 of the machining data generation device 3 according to the embodiment of the present invention. In FIG. 12, the CPU 31 of the processed data generation device 3 calculates a rectangular area having a minimum area including all the blocks arranged in the enlargement setting plane 62 (step S1201).

  FIG. 13 is an exemplary diagram of the setting process of the corresponding area 63 based on the example of FIG. First, as shown in FIG. 13A, a rectangular area 1301 having a minimum area including both a block 1302 indicating a character string and a block 1303 including a star-shaped figure is calculated.

  Returning to FIG. 12, the CPU 31 sets the corresponding area 63 at the upper left corner of the calculated rectangular area (step S1202), and determines whether or not there is printing at the lower left corner of the corresponding area 63 (step S1203). When the CPU 31 determines that there is no printing in the lower left corner of the corresponding area 63 (step S1203: NO), the CPU 31 determines whether the corresponding area 63 is located at the right end of the rectangular area (step S1204).

  When the CPU 31 determines that the corresponding area 63 is located at the right end of the rectangular area (step S1204: YES), the CPU 31 moves the corresponding area 63 to the left end one line below by a predetermined distance (step S1205), and the process is performed at step S1203. The process described above is repeated. When the CPU 31 determines that the corresponding area 63 is not located at the right end of the rectangular area (step S1204: NO), the CPU 31 moves the corresponding area 63 to the right by a predetermined distance (step S1206), and the process is performed in step S1203. The process described above is repeated.

  When the CPU 31 determines that there is printing at the lower left corner of the corresponding area 63 (step S1203: YES), the CPU 31 determines whether there is printing at the upper right corner of the corresponding area 63 (step S1207). When the CPU 31 determines that there is printing in the upper right corner of the corresponding area 63 (step S1207: YES), the CPU 31 deletes the printing in the rectangular area (step S1210), and has the smallest area including all the blocks. It is determined whether or not a rectangular area can be calculated (step S1211).

  That is, since the printing is sequentially deleted, the rectangular area having the minimum area including the block is gradually reduced. When the CPU 31 determines that the rectangular area can be calculated (step S1211: YES), the CPU 31 returns the process to step S1201 and repeats the above-described process. When the CPU 31 determines that the rectangular area cannot be calculated (step S1211: NO), the CPU 31 determines that all the corresponding areas 63 have been set and ends the process.

  When the CPU 31 determines that there is no printing in the upper right corner of the corresponding area 63 (step S1207: NO), the CPU 31 determines whether the corresponding area 63 is located at the lower end of the rectangular area (step S1208). When the CPU 31 determines that the corresponding area 63 is not located at the lower end of the rectangular area (step S1208: NO), the CPU 31 moves the corresponding area 63 downward by a predetermined distance (step S1209), and the process is stepped. It returns to S1207 and repeats the process mentioned above.

  When the CPU 31 determines that the corresponding area 63 is located at the lower end of the rectangular area (step S1208: YES), the CPU 31 ends the process.

  That is, as shown in FIG. 13B, first, the corresponding area 63 is set in the upper left corner of the rectangular area 1301. Next, the corresponding area 63 is moved by a predetermined distance to a position where printing is in the lower left corner. Then, the corresponding area 63 is moved downward by a predetermined distance, and a position where the printing is present in the upper right corner of the corresponding area 63 is found. The position is set as the position of the first corresponding area 63, and the printing in the corresponding area 63 is deleted. Thereby, when the same processing is executed next time, it can be reliably set to a position other than the first position of the corresponding area 63.

  Then, as shown in FIG. 13C, since the corresponding area 63 is sequentially set and the printing in the corresponding area 63 is deleted, the rectangular area cannot be calculated at the end. That is, the corresponding area 63 can be automatically set as shown in the last (right end) diagram of FIG.

  The printing position for each corresponding area 63 may be adjusted by the position adjustment receiving unit 304 and the inclination adjustment receiving unit 305 separately. FIG. 14 is a view showing an example of the position and inclination adjustment screen of the corresponding area 63 of the machining data generation device 3 according to the embodiment of the present invention.

  As shown in FIG. 14A, an identification number is provided for each corresponding area 63, and the identification number of the corresponding area 63 for designating the position and inclination is designated in the identification number designation area 141. Then, the position and inclination from the reference coordinates are designated in the position and inclination adjustment area 142 (position adjustment reception means 304 and inclination adjustment reception means 305). In addition, it is possible to specify with the print check box 143 whether or not to print for each corresponding area 63.

  FIG. 14B is an exemplary diagram showing a relationship between the corresponding area 63 that has received the designation and the enlargement setting plane 62 on which the machining pattern is arranged. For example, in the corresponding area 63ba, the corresponding area is rotated by an angle θ. Therefore, by specifying the angle −θ at the time of printing, printing can be performed as shown in FIG.

  Returning to FIG. 5, the processing order setting accepting unit 306 accepts the setting of the processing order for laser processing for each of the plurality of corresponding regions for which the setting has been accepted. Of course, as already described, the setting of the processing order for laser processing may be received in the order in which the plurality of corresponding regions 63 are specified.

  The processing data generation unit 307 generates processing data for laser processing the processing pattern for each corresponding region in accordance with the processing order for which the setting has been received. The processing data transmission unit 308 transmits the generated processing data to the controller (laser light control unit) 2.

  In the processing pattern arranging unit 302, count characters that are counted up at regular intervals may be arranged as the processing pattern. That is, in the corresponding area setting accepting unit 303, by accepting the setting of a plurality of corresponding areas 63 including a processing pattern obtained by dividing the count character, it is possible to easily perform printing with irregular count-up that has been impossible in the past. Can do. This is because it is sufficient to give the processing order to the corresponding area 63, and it is not necessary to print according to the count characters.

  FIG. 15 is an explanatory diagram showing a state of counter printing using count characters. FIG. 15A is a schematic diagram for explaining the procedure of counter printing using a matrix. As shown in FIG. 15A, the matrix printing is repeated by designating the number of matrices. The counter printing means that each time printing is performed, the printing is incremented, that is, incremented by “1”.

  In FIG. 15A, two blocks are printed on one element in a matrix of 3 rows and 3 columns. That is, there are two blocks: a block that prints about X and a block that prints about Y. Here, for the right direction, X is printed as a count character incremented by "1", and for the downward direction, X is printed as a count character incremented by "1" every time X is incremented three times. In both cases, the count is started from ‘1’, and after ‘3’ is set to return to ‘1’. Therefore, a printing result as shown in FIG. 15A can be obtained.

  By combining a plurality of these, huge matrix printing can be performed. FIG. 15B is an exemplary diagram for comparison with the prior art. Conventionally, when performing count printing, it is necessary to print in the order of counting up, such as “01” → “02” →... → “15”. Therefore, when the corresponding areas 63 are different, there is a problem that it is difficult to print continuously.

  On the other hand, in the present invention, since the corresponding area 63 can be printed, even if the count characters are “01”, “02”, “03”, “06”, “07”. Even if it is continuous, it becomes possible to print easily.

  FIG. 16 is a flowchart showing a processing procedure of the CPU 31 of the machining data generation device (machining data generation unit) 3 according to the embodiment of the present invention. In FIG. 16, the CPU 31 of the processing data generating device 3 displays an enlargement setting plane 62 corresponding to an enlargement area wider than the scanning area of the laser beam (step S1601).

  The CPU 31 arranges the processing pattern on the enlargement setting plane 62 (step S1602), and the setting of the corresponding area 63 corresponding to the size of the scanning area 61 is arranged on the enlargement setting plane 62 on the enlargement setting plane 62. A plurality is accepted so as to include all the processing patterns (step S1603).

  CPU31 receives the setting of the processing order which is each laser-processed with respect to the some corresponding | compatible area | region 63 which received the setting (step S1604). Of course, as described above, the setting of the processing order for laser processing may be received in the order in which the plurality of corresponding regions 63 are specified.

  CPU31 produces | generates the process data which laser-process a process pattern for every corresponding | compatible area | region 63 according to the process order which received the setting (step S1605). The CPU 31 transmits the generated machining data to the controller 2 (step S1606). The controller 2 that has received the machining data sends control signals for controlling the operation of the stage (not shown) on which the marking head 1 and the workpiece W are mounted to the head controller (not shown) and the stage controller (not shown), respectively. Transmitting and laser processing (printing) on the surface of the workpiece W according to the processing data.

  As described above, according to the present embodiment, when a machining pattern is arranged in the same manner as in the past on an enlarged area (enlarged setting plane) 62 wider than the scanning area and laser machining is performed, a normal scanning area (printing) is performed. Laser processing (printing) can be performed for each corresponding area 63 having the same size as the area. Therefore, it is possible to determine the arrangement of the processing patterns while being conscious of the whole, and it is possible to easily ensure continuity at the boundary of the corresponding region 63.

  The present invention is not limited to the above-described embodiments, and various changes and improvements can be made within the scope of the present invention. For example, in the above-described embodiment, the operation control of the stage (not shown) on which the marking head 1 for printing and the workpiece W are mounted is collectively controlled by the controller 2. It may also be used as a stage controller for controlling the above.

  FIG. 17 is a schematic diagram showing a configuration for controlling the operations of the marking head 1 and the stage according to the embodiment of the present invention. As shown in FIG. 17A, normally, a head controller 201 for controlling the operation of the marking head 1 and a stage controller 205 for controlling the operation of the stage 203 are provided, and each operation is performed by a control signal from the controller 2. Control. Thereby, a desired character or the like is printed on the surface of the workpiece W.

  On the other hand, as shown in FIG. 17B, the function of the controller 2 may be shared by the stage controller 205. In this case, a control signal for controlling the operation of the marking head 1 may be generated by the stage controller 205 and transmitted to the head controller 201.

  Thus, it goes without saying that the operation of both the marking head 1 and the stage 203 may be controlled, or the operation of only the marking head 1 or only the stage 203 may be controlled.

1 Marking head (laser beam scanning part)
2 Controller (Laser light generator and laser light controller)
3 Machining data generator (Machining data generator)
4 External equipment 10 Laser processing equipment 31 CPU
32 memory 33 storage device 90 portable recording medium 100 computer program

Claims (9)

A laser beam generator that emits laser beam;
A laser beam scanning unit that scans the surface of the placed workpiece two-dimensionally with a laser beam;
A laser beam control unit that performs laser machining of a machining pattern on the workpiece positioned in the laser beam scanning region;
A machining data generation unit that generates machining data including the machining pattern,
The machining data generation unit
An enlargement setting plane display means for displaying an enlargement setting plane corresponding to an enlargement area wider than the scanning area of the laser beam;
Processing pattern arrangement means for arranging the processing pattern on the enlarged setting plane;
Corresponding area setting accepting means for accepting a plurality of corresponding area settings corresponding to the size of the scanning area on the enlargement setting plane so as to include all the processing patterns arranged in the enlargement setting plane;
A processing order setting accepting unit that accepts a setting of a processing order for laser processing for each of the plurality of corresponding regions that have received settings;
Processing data generating means for generating processing data for laser processing the processing pattern for each of the corresponding regions according to the processing order received setting,
A laser processing apparatus comprising: processing data transmission means for transmitting the generated processing data to the laser light control unit.   The said corresponding area setting reception means receives the setting of several different reference coordinates on the said expansion setting plane, and receives the setting of several said corresponding area based on this reference coordinate. Laser processing equipment.   The laser processing apparatus according to claim 2, wherein the corresponding area setting receiving unit includes a position adjustment receiving unit that receives the adjustment of the reference coordinates on the enlargement setting plane based on a user operation.   The laser processing apparatus according to claim 2, wherein the corresponding area setting accepting unit includes an inclination adjustment accepting unit that accepts an adjustment of an inclination of the corresponding area that has received a setting based on a user operation.   5. The laser processing according to claim 1, wherein the processing order setting accepting unit accepts a setting of a processing order in which laser processing is performed in an order in which a plurality of the corresponding regions are designated. apparatus. The processing pattern arranging means arranges count characters counted up at regular intervals as the processing pattern,
The laser processing apparatus according to claim 1, wherein the corresponding area setting reception unit receives a plurality of corresponding area settings including a processing pattern obtained by dividing the count character. A laser beam generator that emits laser beam;
A laser beam scanning unit that scans the surface of the placed workpiece two-dimensionally with a laser beam;
Machining data generation for generating machining data including a machining pattern connected to a laser beam control unit that performs laser machining of a machining pattern on the workpiece positioned in the laser beam scanning area. A device,
An enlargement setting plane display means for displaying an enlargement setting plane corresponding to an enlargement area wider than the scanning area of the laser beam;
Processing pattern arrangement means for arranging the processing pattern on the enlarged setting plane;
Corresponding area setting accepting means for accepting a plurality of corresponding area settings corresponding to the size of the scanning area on the enlargement setting plane so as to include all the processing patterns arranged in the enlargement setting plane;
A processing order setting accepting unit that accepts a setting of a processing order for laser processing for each of the plurality of corresponding regions that have received settings;
Processing data generating means for generating processing data for laser processing the processing pattern for each of the corresponding regions according to the processing order received setting,
A processing data generation device comprising: processing data transmission means for transmitting the generated processing data to the laser light control unit. A laser beam generator that emits laser beam;
A laser beam scanning unit that scans the surface of the placed workpiece two-dimensionally with a laser beam;
Machining data generation for generating machining data including a machining pattern connected to a laser beam control unit that performs laser machining of a machining pattern on the workpiece positioned in the laser beam scanning area. A machining data generation method that can be executed by an apparatus,
The processing data generation device includes:
Displaying an enlarged setting plane corresponding to an enlarged area wider than the scanning area of the laser beam;
Arranging the processing pattern on the enlarged setting plane;
Receiving a plurality of corresponding area settings corresponding to the size of the scanning area on the enlargement setting plane so as to include all the processing patterns arranged in the enlargement setting plane;
A step of receiving a setting of a processing order for laser processing for each of the plurality of corresponding regions for which the setting has been received;
Generating machining data for laser machining the machining pattern for each of the corresponding areas in accordance with the machining sequence accepted for setting;
Transmitting the generated processing data to the laser light control unit. A processing data generation method comprising: A laser beam generator that emits laser beam;
A laser beam scanning unit that scans the surface of the placed workpiece two-dimensionally with a laser beam;
Machining data generation for generating machining data including a machining pattern connected to a laser beam control unit that performs laser machining of a machining pattern on the workpiece positioned in the laser beam scanning area. A computer program that can be executed on a device,
The processing data generation device,
An enlarged setting plane display means for displaying an enlarged setting plane corresponding to an enlarged area wider than the scanning area of the laser beam;
Processing pattern arrangement means for arranging the processing pattern on the enlarged setting plane;
Corresponding area setting accepting means for accepting a plurality of corresponding area settings corresponding to the size of the scanning area on the enlargement setting plane so as to include all the processing patterns arranged in the enlargement setting plane;
Processing order setting accepting means for accepting a setting of a processing order for laser processing for each of the plurality of corresponding areas for which setting has been accepted,
Processing data generation means for generating processing data for laser processing the processing pattern for each of the corresponding areas in accordance with the processing order received, and processing data transmission for transmitting the generated processing data to the laser light control unit A computer program that functions as means.