JP2019181543A - Cutting machine and cutting method - Google Patents

Abstract

To provide a cutting machine that can accurately correct a tool diameter of a cutting tool, even when a cutting trajectory is non-circular in shape.SOLUTION: A cutting machine 1 comprises a laser oscillator 10, a processing machine body 100, and an NC machine 200. The NC machine 200 includes a unit 201 for computing the amount of correction of a tool diameter, a processing trajectory computing unit 202, and a drive control unit 203. The processing machine body 100 includes a tool trajectory control unit 300. The tool trajectory control unit 300 vibrates a laser beam in a non-circular vibration pattern VP. When processing conditions CP include output control information for controlling output of the laser beam, the processing trajectory computing unit 202 controls the laser oscillator 10 so as to control the output of the laser beam of which a beam spot BS vibrates in the vibration pattern VP. The processing machine body 100 cuts a workpiece W, with a tool trajectory which is a trajectory of the beam spot BS vibrating in the vibration pattern VP when the laser beam is ON.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cutting machine such as a laser processing machine and a cutting method for processing a workpiece by irradiating a laser beam.

  2. Description of the Related Art Laser cutting machines that process a workpiece by irradiating a laser beam and manufacture a product having a predetermined shape are widely used as cutting machines. The laser processing machine cuts a workpiece by tool diameter correction in consideration of a cutting amount by a laser beam so that a product has a predetermined shape. Patent Document 1 describes an example of a laser processing machine that cuts a workpiece by tool diameter correction.

Japanese Patent No. 6087483

  In a laser processing machine, in a state where position coordinates irradiated with a laser beam are fixed, a cutting trace usually has a circular shape. Even in a machining center provided with a plurality of types of rotary tools, the cutting trace usually has a circular shape when the position coordinates of the rotary tools are fixed. Also in a water jet processing machine, a cutting trace usually has a circular shape in a state where the position coordinates at which high-pressure water is injected are fixed. Therefore, the tool radius correction is based on the premise that the cutting trace in a state where the position coordinates of the cutting tool are fixed is circular.

  For this reason, a cutting machine such as a laser processing machine sets the radius of the cutting trace by the cutting tool or the half width of the cutting trace as the tool radius correction amount, and shifts the workpiece by shifting the tool radius correction amount. Controls the trajectory when cutting. In general, in a conventional cutting machine, the tool diameter correction does not correspond to a case where the cutting trace is non-circular.

  An object of this invention is to provide the cutting machine and the cutting method which can correct | amend the tool diameter of a cutting tool accurately, even if a cutting trace is non-circular.

  The present invention controls a laser oscillator that emits a laser beam, a processing machine body that irradiates the processing object with the laser beam, and that cuts the processing object, the laser oscillator, and the processing machine body. An NC device, the NC device based on a processing program and processing conditions set based on product shape information including the size and shape of the final processed product obtained by cutting the workpiece. A tool radius correction amount calculation unit for generating tool radius correction information for correcting a tool radius of a cutting tool for cutting the workpiece, the machining program, the machining conditions, and the tool radius correction information. A machining locus calculation unit that generates a tool radius correction control signal including a cutting correction condition, and a drive control that controls the processing machine body based on the tool radius correction control signal. The processing machine main body changes the relative position with the processing object, and the processing unit for cutting the processing object and the laser beam are irradiated to the processing object. A tool trajectory control unit that vibrates the beam spot formed by a non-circular vibration pattern, and the drive control unit vibrates the beam spot in the vibration pattern based on the tool radius correction control signal. Generating a beam drive control signal for controlling the tool trajectory control unit, and the tool trajectory control unit generates the laser beam so that the beam spot vibrates in the vibration pattern based on the beam drive control signal. And the processing trajectory calculation unit recognizes whether or not the processing conditions include output control information for controlling the output of the laser beam. When the output control information is included in the processing condition, the processing trajectory calculation unit controls the laser oscillator so that the output of the laser beam in which the beam spot vibrates in the vibration pattern is controlled. An output control signal is generated, the laser oscillator controls the output of the laser beam based on the beam output control signal, the processing machine body corresponds to the cutting tool, and the laser beam is in an on state There is provided a cutting machine that cuts the workpiece by a tool trajectory corresponding to the trajectory of the beam spot.

  Further, the present invention provides a laser oscillator that emits a laser beam, a processing machine body that irradiates the processing object with the laser beam, and that cuts the processing object, the laser oscillator, and the processing machine body. An NC device that controls the machining program and machining conditions set based on product shape information including dimensions and shape of a final processed product obtained by cutting the workpiece. A tool radius correction amount calculation unit that generates tool radius correction information for correcting a tool radius of a cutting tool for cutting the workpiece, the machining program, the machining conditions, and the tool radius correction information; A machining locus calculation unit that generates a tool radius correction control signal including a cutting correction condition, and a drive that controls the processing machine body based on the tool radius correction control signal. A control unit, wherein the processing machine main body changes a relative position with respect to the processing target, thereby irradiating the processing target with the processing unit for cutting the processing target. A tool trajectory control section that vibrates a beam spot formed by a non-circular vibration pattern, and the processing trajectory calculation section controls vibration direction control for controlling the vibration direction of the laser beam to the processing conditions. Whether or not information is included, and when the vibration direction control information is included in the machining condition, the machining trajectory calculation unit is configured to transmit the tool radius correction control signal based on the vibration direction control information. The drive control unit generates the tool trajectory control so that the beam spot vibrates in the designated vibration direction on the vibration pattern based on the tool radius correction control signal. Generating a beam drive control signal for controlling the laser beam, and the tool trajectory control unit controls the laser beam so that the beam spot vibrates on the vibration pattern in a designated vibration direction based on the beam drive control signal. And the processing machine body cuts the workpiece by a tool trajectory corresponding to the trajectory of the beam spot that oscillates in the specified vibration direction on the vibration pattern. A cutting machine is provided.

  Further, the present invention cuts the workpiece based on a machining program and machining conditions set based on product shape information including the size and shape of the final processed product obtained by cutting the workpiece. Tool diameter correction information for correcting the tool diameter of the cutting tool to be processed is generated, and a tool diameter correction control signal including a cutting correction condition is generated based on the processing program, the processing condition, and the tool diameter correction information. Generating and controlling the laser beam based on the tool diameter correction control signal so that a beam spot formed by irradiating the workpiece with the laser beam vibrates in a non-circular vibration pattern; Recognizing whether or not the processing conditions include output control information for controlling the output of the laser beam, the processing conditions include the output control information. The beam spot controls the output of the laser beam that vibrates in the vibration pattern, corresponds to the cutting tool, and corresponds to the trajectory of the beam spot when the laser beam is on. Provided is a cutting method for cutting the workpiece by a locus.

  Further, the present invention is based on the processing program and processing conditions set based on the product shape information including the size and shape of the final processed product obtained by cutting the workpiece with a laser beam. Tool radius correction information for correcting the tool radius of a cutting tool for cutting an object is generated, and it is recognized whether or not the machining condition includes vibration direction control information for controlling the vibration direction of the laser beam. When the machining direction includes the vibration direction control information, a tool radius correction control signal is generated based on the vibration direction control information, and the laser beam is generated based on the tool diameter correction control signal. The laser beam is radiated so that a beam spot formed by irradiating the workpiece is vibrated in a designated vibration direction on a non-circular vibration pattern. Provided is a cutting method that cuts the workpiece by a tool trajectory corresponding to the trajectory of the beam spot that corresponds to the cutting tool and vibrates in a specified vibration direction on the vibration pattern. To do.

  According to the cutting machine and the cutting method of the present invention, the tool diameter of the cutting tool can be accurately corrected even if the cutting trace is non-circular.

It is a figure which shows the example of a whole structure of the cutting machine of one Embodiment. It is a figure which shows the structural example of a tool locus | trajectory control part. It is a figure which shows the relationship between the vibration pattern of a beam spot, and a tool locus. It is a figure which shows the relationship between the vibration pattern of a beam spot, and a tool locus. It is a figure which shows the period of the pulse drive of a laser beam. It is a figure which shows the period of the pulse drive of a laser beam. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a flowchart which shows an example of the cutting method of one Embodiment. It is a flowchart which shows an example of the cutting method of one Embodiment. It is a figure which shows the relationship between the vibration pattern and vibration direction of a beam spot, a tool locus, and a G code. It is a figure which shows the relationship between the vibration pattern and vibration direction of a beam spot, a tool locus, and a G code. It is a figure which shows the relationship between the advancing direction which cuts a workpiece, and a tool locus. It is a figure which shows the relationship between the period when a laser beam becomes an ON state, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the pulse drive period of a laser beam, and the position of the beam spot on a vibration pattern. It is a figure which shows the relationship between the vibration pattern and vibration direction of a beam spot, a tool locus, and a G code. It is a figure which shows the relationship between the vibration pattern and vibration direction of a beam spot, a tool locus, and a G code. It is a figure which shows the relationship between the vibration pattern and vibration direction of a beam spot, a tool locus, and a G code. It is a figure which shows the relationship between the vibration pattern and vibration direction of a beam spot, a tool locus, and a G code. It is a figure which shows the period of the pulse drive of a laser beam. It is a flowchart which shows an example of the cutting method of one Embodiment. It is a flowchart which shows an example of the cutting method of one Embodiment.

  Hereinafter, a cutting machine and a cutting method according to an embodiment will be described with reference to the accompanying drawings. As an example of the cutting machine and the cutting method, a laser processing machine and a laser processing method will be described.

  As shown in FIG. 1, the cutting machine 1 includes a laser oscillator 10, a machine body 100, and an NC device (numerical control device) 200. The NC device 200 controls the laser oscillator 10 and the processing machine main body 100. The laser oscillator 10 generates and emits a laser beam. The laser beam emitted from the laser oscillator 10 is transmitted to the processing machine main body 100 through the process fiber 11. The processing machine main body 100 cuts the processing target object W by irradiating the processing target object W with the laser beam and changing the relative position between the processing target object W and the beam spot of the laser beam.

  The laser oscillator 10 is preferably a laser oscillator that amplifies the excitation light emitted from the laser diode and emits a laser beam having a predetermined wavelength, or a laser oscillator that directly uses the laser beam emitted from the laser diode. The laser oscillator 10 is, for example, a solid laser oscillator, a fiber laser oscillator, a disk laser oscillator, or a direct diode laser oscillator (DDL oscillator).

  The laser oscillator 10 emits a 1 μm band laser beam having a wavelength of 900 nm to 1100 nm. Taking a fiber laser oscillator and a DDL oscillator as examples, the fiber laser oscillator emits a laser beam with a wavelength of 1060 nm to 1080 nm, and the DDL oscillator emits a laser beam with a wavelength of 910 nm to 950 nm.

  The processing machine main body 100 includes a processing table 101 on which a workpiece W is placed, a portal X-axis carriage 102, a Y-axis carriage 103, a processing unit 104, and a tool path control unit 300. The workpiece W is a sheet metal made of stainless steel, for example. The workpiece may be an iron-based sheet metal other than stainless steel, or may be a sheet metal such as aluminum, an aluminum alloy, or copper steel. The laser beam emitted from the laser oscillator 10 is transmitted to the processing unit 104 of the processing machine main body 100 through the process fiber 11. The tool path control unit 300 is accommodated in the machining unit 104.

  The X-axis carriage 102 is configured to be movable in the X-axis direction on the processing table 101. The Y-axis carriage 103 is configured to be movable in the Y-axis direction orthogonal to the X-axis on the X-axis carriage 102. The X-axis carriage 102 and the Y-axis carriage 103 move to move the processing unit 104 along the surface of the workpiece W in the X-axis direction, the Y-axis direction, or any combination direction of the X-axis and the Y-axis. Acts as a mechanism.

  Instead of moving the processing unit 104 along the surface of the workpiece W, the processing machine body 100 may be configured such that the position of the processing unit 104 is fixed and the workpiece W moves. . The processing machine main body 100 only needs to include a moving mechanism that moves the relative position of the processing unit 104 with respect to the surface of the workpiece W.

  A nozzle 106 is attached to the processing unit 104. A circular opening 105 is formed at the tip of the nozzle 106. The laser beam transmitted to the processing unit 104 is emitted from the opening 105 of the nozzle 106 and irradiated onto the processing target W.

  An assist gas such as nitrogen or air is supplied to the processing unit 104. The assist gas may be oxygen, and the mixing ratio can be arbitrarily set depending on whether the purpose is to suppress oxidation or use heat of oxidation reaction. The processing unit 104 of the processing machine main body 100 irradiates the processing target object W with a laser beam from the opening 105 of the nozzle 106 and cuts the assist gas AG on the processing target object W when cutting the processing target object W. Spray. The assist gas AG discharges the melt of the workpiece W by the laser beam.

  The tool trajectory control unit 300 functions as a beam vibration mechanism that vibrates the laser beam emitted from the opening 105 while traveling in the processing unit 104 with a non-circular vibration pattern. The tool trajectory control unit 300 causes the laser beam to vibrate in a non-circular vibration pattern, so that the processing unit 104 cuts the workpiece W using the non-circular tool trajectory. A specific configuration example of the tool path control unit 300 and a method by which the tool path control unit 300 vibrates the beam spot of the laser beam with a non-circular vibration pattern will be described later.

  A CAD (Computer Aided Design) device 20 generates product shape data (CAD data) SD based on product shape information including dimensions and shapes of a final processed product obtained by cutting the workpiece W. The CAD device 20 outputs the product shape data SD to a CAM (Computer Aided Manufacturing) device 21. The CAM device 21 generates a machining program (NC data) PP for the cutting machine 1 to cut the workpiece W based on the product shape data SD, and designates a machining condition CP. That is, the processing program PP and the processing condition CP are set based on product shape information including the size and shape of the final processed product.

  The machining program PP includes G41 (left tool radius correction) for controlling the locus of the cutting tool by shifting the tool radius correction amount to the left side in the cutting progress direction, or the tool diameter on the right side in the cutting progress direction. A G code indicated by G42 (right tool diameter correction) for controlling the locus of the cutting tool by shifting by the correction amount is included.

  The CAM device 21 designates a tool path corresponding to the cutting tool and a laser beam vibration pattern for forming the tool path as the machining condition CP. The laser beam vibration pattern is a vibration pattern for vibrating a beam spot formed by irradiating the workpiece W with the laser beam. The tool path and the vibration pattern have, for example, a non-circular shape. The CAM device 21 can control the output of the laser beam irradiated to the workpiece W by controlling the laser oscillator 10. For example, the CAM device 21 can set the timing and period when the laser beam is turned on with respect to the vibration pattern of the laser beam.

  Specifically, the CAM device 21 can set a start time corresponding to the start position where the laser beam is turned on and an end time corresponding to the end position where the laser beam is turned off, with respect to the vibration pattern of the laser beam. it can. When the laser oscillator 10 and the tool path control unit 300 are synchronized with each other and the laser oscillator 10 is pulse-driven, the CAM device 21 starts a position where the laser beam is turned on with respect to the vibration pattern of the laser beam. And a duty ratio in pulse driving can be set. The duty ratio is a parameter for setting a period during which the laser beam is turned on.

  The machining condition CP includes output control information for controlling the output of the laser beam with respect to the vibration pattern of the laser beam. For example, in the machining condition CP, output control information in which a start time corresponding to a start position where the laser beam is turned on and an end time corresponding to an end position where the laser beam is turned off are set with respect to the vibration pattern of the laser beam. It is included. Alternatively, the processing condition CP includes output control information in which a start time corresponding to a start position where the laser beam is turned on with respect to the vibration pattern of the laser beam and a duty ratio in pulse driving are set.

  The processing condition CP includes processing target information in which material parameters such as the material and thickness of the processing target W are specified. The machining conditions CP include machining parameters such as laser beam output, machining speed, diameter (nozzle diameter) of the opening 105 of the nozzle 106, and cutting gas information such as assist gas conditions. That is, the machining condition CP includes output control information, machining target information, and cutting information.

  The CAM device 21 outputs the machining program PP and the machining conditions CP to the NC device 200 of the cutting machine 1. The NC apparatus 200 controls the beam spot locus of the laser beam emitted from the opening 105 of the nozzle 106 by controlling the tool locus control unit 300 based on the machining program PP and the machining condition CP.

  The NC device 200 controls the laser oscillator 10 based on the machining program PP and the machining condition CP. Specifically, the NC apparatus 200 controls the laser oscillator 10 so that the laser beam is turned on at the start time and turned off at the end time corresponding to the duty ratio. The NC device 200 generates a synchronization signal that synchronizes the laser oscillator 10 and the tool path control unit 300, and outputs the synchronization signal to the laser oscillator 10 and the tool path control unit 300.

  The NC device 200 moves the nozzle 106 to a target position by controlling the processing machine main body 100 and driving the X-axis carriage 102 and the Y-axis carriage 103 based on the processing program PP and the processing condition CP.

  A specific configuration example of the tool path control unit 300 and an example of a method by which the tool path control unit 300 vibrates the beam spot BS of the laser beam with a non-circular vibration pattern will be described with reference to FIG.

  As shown in FIG. 2, the tool path control unit 300 is housed inside the machining unit 104. The tool locus control unit 300 includes a collimator lens 331, a galvano scanner unit 340, a bend mirror 334, and a focusing lens 335. The collimator lens 331 converts the laser beam emitted from the process fiber 11 into parallel light (collimated light).

  The galvano scanner unit 340 includes a scan mirror 341 (first scan mirror), a drive unit 342 (first drive unit) that rotationally drives the scan mirror 341, a scan mirror 343 (second scan mirror), and a scan. And a driving unit 344 (second driving unit) that rotationally drives the mirror 343.

  The drive unit 342 can reciprocate the scan mirror 341 in a predetermined direction (for example, the X direction) within a predetermined angle range under the control of the drive control unit 203. The scan mirror 341 reflects the laser beam converted into parallel light by the collimator lens 331 toward the scan mirror 343.

  The drive unit 344 can drive the scan mirror 343 to reciprocate within a predetermined angle range in a direction (for example, the Y direction) different from the drive direction of the scan mirror 341 under the control of the drive control unit 203. The scan mirror 343 reflects the laser beam reflected by the scan mirror 341 toward the bend mirror 334.

  The bend mirror 334 reflects the laser beam reflected by the scan mirror 343 downward in the Z-axis direction perpendicular to the X-axis and the Y-axis. The focusing lens 335 focuses the laser beam reflected by the bend mirror 334 and irradiates the workpiece W.

  The galvano scanner unit 340 can make cutting traces into various non-circular shapes by reciprocally vibrating one or both of the scan mirror 341 and the scan mirror 343 at a high speed of, for example, 1000 Hz or more. That is, by converging (condensing) a laser beam having a certain light intensity or more to a plurality of locations per unit time, the tool shape that is in contact with the workpiece W and substantially contributes to machining can be changed into various non-circular shapes. Can be arbitrarily.

  As shown in FIG. 1, the NC apparatus 200 includes a tool radius correction amount calculation unit 201, a machining locus calculation unit 202, and a drive control unit 203. A machining program PP and a machining condition CP are input from the CAM device 21 to the tool radius correction amount computing unit 201 and the machining locus computing unit 202. The tool radius correction amount calculation unit 201 generates tool radius correction information TC for correcting the tool radius of the cutting tool for cutting the workpiece W based on the machining program PP and the machining condition CP.

  The relationship between the beam spot vibration pattern and the tool trajectory, and the tool radius correction information TC will be described with reference to FIGS. 3A and 3B. 3A and 3B show the trajectory of the beam spot of the laser beam irradiated from the inside of the nozzle 106 to the workpiece W through the opening 105. FIG.

  Each symbol shown in FIGS. 3A and 3B will be described. A symbol BS indicates a beam spot formed by irradiating the workpiece W with a laser beam. Symbol VP indicates the vibration pattern of the beam spot BS. In FIG. 3A and FIG. 3B, as an example of the vibration pattern VS of the beam spot BS, a vibration pattern in which the beam spot BS vibrates in the rotation direction is indicated by a one-dot chain line. The beam spot BS rotates and vibrates on the vibration pattern VP.

  The arrows shown in FIGS. 3A and 3B indicate the rotation direction of the beam spot BS. 3A and 3B show a state in which the beam spot BS rotates and oscillates clockwise, but the beam spot BS may oscillate counterclockwise. The vibration pattern VP of the beam spot BS may be a free shape including a non-circular shape.

  In FIG. 3A and FIG. 3B, the beam spot BS when the laser beam is in the HIGH level on state is indicated by a solid circle, and the beam spot BS when the laser beam is in the LOW level off state is indicated by a dashed circle. Yes. FIG. 3A shows a case where the laser beam is turned on in a range of 50% (duty ratio = 50%) on the vibration pattern VP. FIG. 3B shows a case where the laser beam is turned on in a range of 75% (duty ratio = 75%) on the vibration pattern VP.

  A symbol TP indicates a tool path. In the case of a laser beam machine, the tool trajectory TP corresponds to the trajectory of the beam spot BS when the laser beam is on in the beam spot BS that vibrates with the vibration pattern VP. In FIG. 3A, the tool trajectory TP corresponds to the trajectory of the beam spot BS when the laser beam is in the ON state within a range of 50% of the vibration pattern VP. In FIG. 3B, the tool trajectory TP corresponds to the trajectory of the beam spot BS when the laser beam is in the ON state in a range of 75% of the vibration pattern VP.

  The tool path TP corresponds to a cutting tool for cutting the workpiece W. The shape of the tool trajectory TP corresponds to the shape of the cutting tool. The tool path TP has, for example, a non-circular shape. In FIG. 3A and FIG. 3B, as an example of the tool trajectory TP, a tool trajectory having a shape in which the beam spot BS draws an inverted C obtained by horizontally inverting the alphabet C is indicated by a solid line. The tool locus TP may have a shape in which the beam spot BS draws the letter C, and may be a free shape including a non-circular shape.

  The symbol CN indicates the center point of the nozzle 106 (hereinafter referred to as the nozzle center point CN). The nozzle center point CN coincides with the center point of the opening 105. Reference symbol CL indicates a control center point which is a reference for controlling the vibration pattern VP and the tool trajectory TP. 3A and 3B show a case where the control center point CL and the nozzle center point CN coincide with each other.

  Reference numeral DT indicates the direction of travel of the cutting process (predetermined direction). The tool trajectory TP corresponds to the trajectory of the beam spot BS when the beam spot BS moves on the vibration pattern VP and the laser beam is on. Therefore, the processing machine main body 100 can change the shape of the tool trajectory TP by controlling the time point and period when the laser beam is turned on based on the output control information included in the processing condition CP. The beam spot BS when the laser beam is in the on state moves on the vibration pattern VP, and the tool trajectory TP and the nozzle 106 move in the traveling direction DT. Cutting is performed according to the shape.

  A symbol NP indicates a locus of the nozzle 106 (hereinafter referred to as a nozzle locus NP). The nozzle locus NP is specifically the locus of the nozzle center point CN. Reference symbol LT indicates a trajectory along which the tool trajectory TP moves, specifically, a trajectory of the control center point CL (hereinafter referred to as a control center trajectory LT). 3A and 3B show a case where the control center locus LT and the nozzle locus NP coincide with each other.

  Reference numerals MPL and MPR indicate machining surface formation positions at which machining surfaces are formed on the workpiece W when the tool trajectory TP moves in the traveling direction DT. Reference numerals MVL and MVR indicate tool radius correction values. The tool radius correction values MVL and MVR correspond to the distances from the control center point CL (nozzle center point CN) to the machining surface formation positions MPL and MPR. That is, the machining surface formation positions MPL and MPR are positions where the tool diameter is maximum in the tool path TP. The tool radius correction value MVL is a parameter in the left tool radius correction, and the tool radius correction value MVR is a parameter in the right tool radius correction.

  The tool radius correction amount calculation unit 201 recognizes the tool path TP included in the machining condition CP. The tool radius correction amount calculation unit 201 generates tool radius correction information TC based on the recognized tool trajectory TP and the nozzle trajectory NP or the control center trajectory LT and the cutting progress direction DT. The tool radius correction information TC includes a tool path TP, a control center point CL, a nozzle center point CN, and tool radius correction values MVL and MVR.

  The tool radius correction amount calculation unit 201 outputs tool radius correction information TC including correction information for both the left tool radius correction and the right tool radius correction to the machining locus calculation unit 202. The machining track calculation unit 202 receives the machining program PP and the machining condition CP from the CAM device 21, and receives the tool radius correction information TC from the tool radius correction amount calculation unit 201.

  The machining locus calculation unit 202 translates the G code included in the machining program PP. Based on the translation result, the machining locus calculation unit 202 determines a cutting correction condition for either cutting with the left tool radius correction or cutting with the right tool radius correction. Note that the machining program PP may include a robot language or the like instead of the G code.

  The machining locus calculation unit 202 generates a tool radius correction control signal TS based on the machining program PP, the machining conditions CP, the tool radius correction information TC, and the determined cutting correction conditions. The machining locus calculation unit 202 outputs a tool radius correction control signal TS to the drive control unit 203. The drive control unit 203 generates a drive control signal CS for controlling the processing machine body 100 based on the tool radius correction control signal TS.

  Based on the tool radius correction control signal TS, the drive control unit 203 moves the X axis carriage 102 of the processing machine main body 100 and the nozzle center point CN of the nozzle 106 on the nozzle locus NP in the cutting direction DT. A nozzle drive control signal NCS for driving the Y-axis carriage 103 is generated.

  When cutting with left tool radius correction, the drive control unit 203 generates a nozzle drive control signal NCS based on the cutting progress direction DT, the nozzle center point CN, and the tool radius correction value MVL. When cutting with right tool radius correction, the drive control unit 203 generates a nozzle drive control signal NCS based on the cutting progress direction DT, the nozzle center point CN, and the tool radius correction value MVR. The drive control unit 203 outputs a nozzle drive control signal NCS to the processing machine body 100.

  Based on the tool radius correction control signal TS, the drive control unit 203 controls the tool trajectory control unit 300 of the processing machine body 100 so that the beam spot BS of the laser beam vibrates with a predetermined vibration pattern VP. Generate a BCS. The drive control unit 203 outputs a beam drive control signal BCS to the tool locus control unit 300 of the processing machine body 100.

  The machining locus calculation unit 202 recognizes whether or not the machining condition CP includes output control information for controlling the output of the laser beam with respect to the vibration pattern of the laser beam. The machining locus calculation unit 202 includes, for example, a start point corresponding to a start position where the laser beam is turned on and an end point corresponding to an end position where the laser beam is turned off with respect to the vibration pattern VP of the laser beam. It recognizes whether the set output control information is included. Alternatively, the machining locus calculation unit 202 outputs, as the machining conditions CP, for example, a start time corresponding to a start position where the laser beam is turned on with respect to the vibration pattern VP of the laser beam and a duty ratio in pulse driving are set. Recognizes whether control information is included.

  If the output control information is not included in the processing condition CP, the processing locus calculation unit 202 does not perform on / off control on the output of the laser beam emitted from the laser oscillator 10, for example. Accordingly, when the output control information is not included in the machining condition CP, the tool locus TP corresponds to the vibration pattern VP of the laser beam.

  When the output control information is included in the processing condition CP, the processing trajectory calculation unit 202 performs on / off control of the output of the laser beam emitted from the laser oscillator 10, for example. The machining locus calculation unit 202 generates a beam output control signal BOS for controlling the laser oscillator 10 based on the machining program PP and the machining condition CP.

  Specifically, the machining trajectory calculation unit 202 has an output set so that the laser beam is turned on at a predetermined start position on the vibration pattern VP of the laser beam and the laser beam is turned off at a predetermined end position. A beam output control signal BOS including control information is generated.

  When the laser oscillator 10 and the tool locus control unit 300 are synchronized with each other and the laser oscillator 10 is pulse-driven, the machining locus calculation unit 202 turns on the laser beam at a predetermined start position on the vibration pattern VP of the laser beam. The beam output control signal BOS including the output control information set so that the laser beam is turned off according to the duty ratio in the pulse drive is generated. The machining locus calculation unit 202 outputs a beam output control signal BOS to the laser oscillator 10.

  When the cutting machine 1 cuts the workpiece W, the NC device 200 sends synchronization signals SS1 and SS2 for synchronizing the laser oscillator 10 and the tool path control unit 300 to the laser oscillator 10 and the tool path control. The data may be output to the unit 300.

  There is a case where the synchronization between the laser oscillator 10 and the tool path control unit 300 is shifted over time. Therefore, it is desirable that the NC device 200 periodically outputs the synchronization signals SS1 and SS2 to the laser oscillator 10 and the tool path control unit 300 even during the cutting process.

  Based on the nozzle drive control signal NCS, the processing machine main body 100 drives the X-axis carriage 102 and the Y-axis carriage 103 so that the nozzle center point CN of the nozzle 106 moves on the nozzle locus NP in the cutting process progress direction DT. Let Based on the beam drive control signal BCS, the processing machine main body 100 drives the tool trajectory control unit 300 so that the beam spot BS of the laser beam vibrates with a predetermined vibration pattern VP.

  Based on the beam drive control signal BCS, the laser oscillator 10 controls the output of the laser beam so that the laser beam is turned on at the start time and turned off at the end time corresponding to the duty ratio.

  3A, 3B, 4A, 4B, 5A, 5B, 5C, and 5D, the relationship between the vibration pattern VP of the beam spot BS and the tool trajectory TP will be described. 4A and 4B show the period (Period) of pulse driving of the laser beam. 4A and 4B, the vertical axis indicates the output value (relative value) of the laser beam, and the horizontal axis indicates the time axis. Reference numeral 1PRD shown in FIGS. 4A and 4B indicates one cycle in pulse driving.

  FIG. 4A corresponds to FIG. 3A and shows a case where the duty ratio in the pulse drive is 50%. The period during which the laser beam is on is 0.5 PRD. FIG. 4B corresponds to FIG. 3B and shows a case where the duty ratio in pulse driving is 75%. The period during which the laser beam is turned on is 0.75 PRD.

  In a state where the laser oscillator 10 and the tool path control unit 300 are synchronized, as shown in FIG. 3A or FIG. 4A, the laser beam is at a HIGH level at the start time point ST1 corresponding to the start position SP1 on the vibration pattern VP. Is turned on, corresponding to the end position EP1 on the vibration pattern VP, and the LOW level is turned off at the end time ET1 when the duty ratio becomes 50%. Accordingly, the tool trajectory TP corresponds to the trajectory of the beam spot BS from the start position SP1 to the end position EP1 on the vibration pattern VP. FIG. 3A shows a case where the start position SP1 corresponds to the machining surface formation position MPR and the end position EP1 corresponds to the machining surface formation position MPL.

  In a state where the laser oscillator 10 and the tool path control unit 300 are synchronized, as shown in FIG. 3B or FIG. 4B, the laser beam is at a HIGH level at the start time point ST2 corresponding to the start position SP2 on the vibration pattern VP. Is turned on, corresponding to the end position EP2 on the vibration pattern VP, and the LOW level is turned off at the end time ET2 at which the duty ratio becomes 75%. Accordingly, the tool trajectory TP corresponds to the trajectory of the beam spot BS from the start position SP2 to the end position EP2 on the vibration pattern VP. FIG. 3B shows a case where the start position SP1 corresponds to the machining surface formation position MPR.

  There may be a phase difference between the synchronization signal SS1 input from the NC apparatus 200 to the laser oscillator 10 and the synchronization signal SS2 input from the NC apparatus 200 to the processing machine body 100 due to a delay or the like. The phase difference between the synchronization signal SS1 and the synchronization signal SS2 is likely to occur when the NC device 200, the laser oscillator 10, and the processing machine body 100 are connected via a network.

  When the phase difference between the synchronization signal SS1 and the synchronization signal SS2 occurs, the start position SP1 or SP2 and the end position EP1 or EP2 deviate from the target position, so that the tool path TP has a shape different from the target tool path. Have. When the phase difference between the synchronization signal SS1 and the synchronization signal SS2 occurs, the NC device 200 adjusts the timing of outputting the synchronization signal SS1 and the synchronization signal SS2 so that the phase difference between the synchronization signal SS1 and the synchronization signal SS2 does not occur. To do.

  By synchronizing the laser oscillator 10 and the tool trajectory controller 300, the beam spot BS can be positioned at the start position SP1 or SP2 at the start point ST1 or ST2 when the laser beam is turned on. That is, the start point ST1 or ST2 and the start position SP1 or SP2 can be matched.

  In FIG. 3A, the right direction is the + X direction, the left direction is the -X direction, the upward direction is the + Y direction, the downward direction is the -Y direction, the horizontal direction is the horizontal direction, and the vertical direction is the vertical direction. FIG. 3A shows a case where the traveling direction DT of the cutting process is the + X direction. As shown in FIG. 3A, the beam spot BS rotates and vibrates on the vibration pattern VP. Therefore, one period (1PRD) in the pulse driving of the laser beam shown in FIG. 4A corresponds to the beam spot BS rotating once on the vibration pattern VP, that is, rotating 360 ° (1PRD = 360 °).

  When the cutting direction DT is used as a reference, the + X direction corresponds to a position of 0 ° on the vibration pattern VP as shown in FIG. 3A. The −Y direction, the −X direction, and the + Y direction correspond to positions of 90 °, 180 °, and 270 ° on the vibration pattern VP, respectively.

  In the state where the output of the laser beam is on / off controlled as shown in FIG. 4A, the drive control unit 203 controls the tool locus control unit 300 by the beam drive control signal BCS, thereby controlling the phase of the laser beam. can do. Specifically, the drive control unit 203 can arbitrarily set or shift the range in which the laser beam is turned on on the vibration pattern VP.

  5A, FIG. 5B, FIG. 5C, and FIG. 5D show the relationship between the pulse driving period of the laser beam and the position of the beam spot BS on the vibration pattern VP. 5A, 5B, 5C, and 5D, the vertical axis indicates the output value (relative value) of the laser beam, and the horizontal axis indicates the position of the beam spot BS on the vibration pattern VP. Reference numeral 1PRD shown in FIGS. 5A, 5B, 5C, and 5D indicates one cycle in pulse driving.

  FIG. 5A corresponds to FIG. 4A. The drive control unit 203 controls the tool trajectory control unit 300 with the beam drive control signal BCS, so that it is turned on when the beam spot BS reaches a position of 270 ° on the vibration pattern VP, and is set to a position of 90 °. The range in which the laser beam is turned on on the vibration pattern VP can be controlled so that the laser beam is turned off when reaching.

  FIG. 5B shows a state where the range in which the laser beam is turned on on the vibration pattern VP is shifted by 90 ° in the rotation direction of the beam spot BS, as compared with FIG. 5A. The drive control unit 203 controls the tool trajectory control unit 300 with the beam drive control signal BCS, so that it is turned on when the beam spot BS reaches the 0 ° position on the vibration pattern VP, and the 180 ° position. The range in which the laser beam is turned on on the vibration pattern VP can be controlled so that the laser beam is turned off when reaching.

  FIG. 5C shows a state where the range in which the laser beam is turned on on the vibration pattern VP is shifted by 180 ° in the rotation direction of the beam spot BS as compared with FIG. 5A. The drive control unit 203 controls the tool trajectory control unit 300 with the beam drive control signal BCS, and is turned on when the beam spot BS reaches the 90 ° position on the vibration pattern VP. The range in which the laser beam is turned on on the vibration pattern VP can be controlled so that the laser beam is turned off when reaching.

  FIG. 5D shows a state where the range in which the laser beam is turned on on the vibration pattern VP is shifted by 270 ° in the rotation direction of the beam spot BS, as compared with FIG. 5A. The drive control unit 203 controls the tool trajectory control unit 300 with the beam drive control signal BCS, and is turned on when the beam spot BS reaches a position of 180 ° on the vibration pattern VP, and is set to a position of 0 °. The range in which the laser beam is turned on on the vibration pattern VP can be controlled so that the laser beam is turned off when reaching.

  5A to 5D, the case where the duty ratio in the pulse driving of the laser beam is 50%, that is, the case where the period during which the laser beam is turned on is 0.5 PRD has been described corresponding to FIG. 4A. As shown in FIG. 4B, when the duty ratio is 75%, that is, when the period during which the laser beam is on is 0.75 PRD, and in other cases, the drive control unit 203 also performs beam drive control. By controlling the tool path control unit 300 with the signal BCS, the phase of the laser beam can be controlled.

  In the state where the beam spot BS is rotating and vibrating on the vibration pattern VP, the processing locus calculation unit 202 may control the laser oscillator 10 by the beam output control signal BOS to control the phase of the laser beam. . Therefore, the laser beam is turned on on the vibration pattern VP by at least one of the position control of the beam spot BS on the vibration pattern VP by the drive control unit 203 and the output control of the laser beam by the processing locus calculation unit 202. The range can be arbitrarily set or shifted.

  Therefore, the cutting machine 1 arbitrarily sets or shifts the range in which the laser beam is turned on on the vibration pattern VP, thereby starting or cutting the one vibration pattern VP. A wide variety of tool trajectories TP can be formed or changed during machining.

  An example of a cutting method will be described using the flowcharts shown in FIGS. 6A and 6B. The CAD device 20 generates product shape data SD based on the product shape information including the size and shape of the final processed product in step S1 of the flowchart shown in FIG. 6A. Further, the CAD device 20 outputs the product shape data SD to the CAM device 21.

  In step S2, the CAM device 21 generates a machining program PP (including a G code) for the cutting machine 1 based on the product shape data SD, and designates a machining condition CP. Further, the CAM device 21 outputs the machining program PP and the machining condition CP to the tool radius correction amount calculation unit 201 and the machining locus calculation unit 202 of the NC device 200 of the cutting machine 1.

  In the NC apparatus 200, the tool radius correction amount calculation unit 201 generates tool radius correction information TC for correcting the tool radius of the tool path TP based on the machining program PP and the machining condition CP in step S3. . Further, the tool radius correction amount calculation unit 201 outputs the tool radius correction information TC to the machining locus calculation unit 202.

  The machining locus calculation unit 202 receives the machining program PP and the machining condition CP from the CAM device 21 in step S2, and receives the tool radius correction information TC from the tool radius correction amount calculation unit 201 in step S3. In step S4, the machining locus calculation unit 202 translates the G code included in the machining program PP. Further, the machining locus calculation unit 202 determines a cutting correction condition for either cutting with the left tool radius correction or cutting with the right tool radius correction based on the translation result.

  In step S5, the machining locus calculation unit 202 generates a tool radius correction control signal TS based on the machining program PP, the machining conditions CP, the tool radius correction information TC, and the determined cutting correction conditions. Further, the machining locus calculation unit 202 outputs a tool radius correction control signal TS to the drive control unit 203.

  The drive control unit 203 generates a drive control signal CS for controlling the processing machine body 100 based on the tool radius correction control signal TS. Specifically, in step S6, the drive control unit 203 generates a nozzle drive control signal NCS for controlling the movement of the nozzle 106 (nozzle center point CN) based on the tool radius correction control signal TS.

  In step S7, the drive control unit 203 generates a beam drive control signal BCS for controlling the locus (vibration pattern VP) of the beam spot BS of the laser beam based on the tool radius correction control signal TS. Further, the drive control unit 203 outputs a nozzle drive control signal NCS to the processing machine main body 100 and outputs a beam drive control signal BCS to the tool locus control unit 300 of the processing machine main body 100.

  In step S8 of the flowchart shown in FIG. 6B, the processing locus calculation unit 202 sets the processing condition CP to the start time and the off state corresponding to the start position where the laser beam is turned on with respect to the vibration pattern VP of the laser beam. It is recognized whether or not the output control information in which the end time corresponding to the end position is set is included. Alternatively, the machining locus calculation unit 202 includes output control information in which a start time corresponding to a start position where the laser beam is turned on and a duty ratio in pulse driving are set with respect to the vibration pattern VP of the laser beam. Recognize whether or not.

  When the output control information is not included in the processing condition CP, the processing trajectory calculation unit 202 does not perform on / off control of the laser beam emitted from the laser oscillator 10. Accordingly, when the output control information is not included in the machining condition CP, the tool locus TP corresponds to the vibration pattern VP of the laser beam.

  When the output control information is included in the processing condition CP, the processing locus calculation unit 202 performs on / off control of the laser beam emitted from the laser oscillator 10. In step S9, the processing locus calculation unit 202 generates a beam output control signal BOS for controlling the laser oscillator 10 based on the processing program PP and the processing condition CP.

  Specifically, the machining trajectory calculation unit 202 has an output set so that the laser beam is turned on at a predetermined start position on the vibration pattern VP of the laser beam and the laser beam is turned off at a predetermined end position. A beam output control signal BOS including control information is generated.

  When the laser oscillator 10 and the tool locus control unit 300 are synchronized with each other and the laser oscillator 10 is pulse-driven, the machining locus calculation unit 202 turns on the laser beam at a predetermined start position on the vibration pattern VP of the laser beam. The beam output control signal BOS including the output control information set so that the laser beam is turned off according to the duty ratio in the pulse drive is generated. Further, the machining locus calculation unit 202 outputs a beam output control signal BOS to the laser oscillator 10.

  In step S <b> 10, the NC device 200 outputs synchronization signals SS <b> 1 and SS <b> 2 for synchronizing the laser oscillator 10 and the tool path control unit 300 to the laser oscillator 10 and the tool path control unit 300. If the laser oscillator 10 and the tool path control unit 300 are synchronized, step S10 may be omitted.

  In step S11, the laser oscillator 10 outputs the laser beam so that the laser beam is turned on at the start time and turned off at the end time corresponding to the duty ratio based on the beam output control signal BOS. To control.

  In step S12, the processing machine main body 100 synchronizes the tool path control unit 300 with the laser oscillator 10 so that the beam spot BS of the laser beam vibrates with the designated vibration pattern VP based on the beam drive control signal BCS. The tool path control unit 300 is driven. The cutting machine 1 controls the tool trajectory TP by vibrating the beam spot BS with a designated vibration pattern VP and controlling the output of the laser beam.

  In step S13, the processing machine main body 100 controls the movement of the nozzle 106 based on the nozzle drive control signal NCS. Specifically, the processing machine main body 100, based on the nozzle drive control signal NCS, causes the X-axis carriage 102 and the Y-axis carriage 103 so that the nozzle center point CN of the nozzle 106 moves on the nozzle locus NP in the traveling direction DT. Drive.

  The timing of step S11, step S12, and step S13 is controlled based on the machining program PP and the machining condition CP. The cutting machine 1 cuts the workpiece W by moving the tool path TP in the traveling direction DT based on the tool radius correction value MVL or MVR in steps S11 to S13.

  When the processing based on the processing program PP is completed, the cutting machine 1 ends the cutting of the workpiece W. Specifically, the NC device 200 of the cutting machine 1 controls the laser oscillator 10 to stop laser beam control and injection, and controls the machine main body 100 to control the tool path control unit 300 and the X-axis carriage 102. And the drive of the Y-axis carriage 103 is stopped.

  In the CAM device 21, the rotation direction of the cutting tool can be specified. The CAM device 21 can designate a tool locus TP corresponding to a cutting tool. The CAM device 21 can designate the vibration pattern VP of the beam spot BS of the laser beam for forming the designated tool path TP. Accordingly, the CAM device 21 can designate the vibration direction of the beam spot BS that vibrates on the vibration pattern VP, which corresponds to the rotation direction of the cutting tool.

  By designating the vibration direction of the beam spot BS, it is possible to designate the direction of cutting the workpiece W at the machining surface forming position MPL or MPR, that is, either the forward direction or the reverse direction. The forward direction is a direction in which the moving speed of the laser beam for cutting the workpiece W at the machining surface forming position MPL or MPR is faster than the moving speed of the nozzle 106. The reverse direction is a direction in which the moving speed of the laser beam for cutting the workpiece W at the machining surface forming position MPL or MPR is slower than the moving speed of the nozzle 106.

  When the workpiece W is cut in the forward direction at the machining surface formation position MPL or MPR, the cutting speed relative to the workpiece W is relatively higher than when the workpiece W is cut in the reverse direction. can do. When the cutting speed is slow, depending on the workpiece W, it becomes a factor that deteriorates the processing quality of the cut surface.

  When the workpiece W is cut in the reverse direction at the machining surface formation position MPL or MPR, the cutting speed for the workpiece W is relatively slow compared to the case where the workpiece W is cut in the forward direction. can do. If the cutting speed is high, the amount of heat required for cutting may be insufficient depending on the workpiece W, and the workpiece W may not be cut accurately, or the melt of the workpiece W called dross may be cut. It may stick to the part.

  Therefore, by controlling the vibration direction of the laser beam that forms the tool trajectory TP according to the workpiece W or cutting conditions, the processing quality of the cut surface of the workpiece W is deteriorated, and the workpiece W It is possible to solve problems such as a shortage of heat necessary for cutting the material.

  The machining condition CP includes vibration direction control information for controlling the direction of cutting the workpiece W at the machining surface formation position MPL or MPR. Specifically, the machining condition CP includes vibration direction control information that specifies whether to cut the workpiece W in the forward direction or in the reverse direction at the machining surface formation position MPL or MPR. Yes. That is, the machining condition CP includes vibration direction control information, machining target information, and cutting information.

  The CAM device 21 outputs the machining program PP and the machining conditions CP to the NC device 200 of the cutting machine 1. The NC device 200 controls the tool locus control unit 300 based on the machining program PP and the machining condition CP, thereby determining the locus and vibration direction of the beam spot BS of the laser beam emitted from the opening 105 of the nozzle 106. Control.

  Specifically, the machining locus calculation unit 202 of the NC device 200 is generated by the machining program PP generated by the CAM device 21, the machining condition CP designated by the CAM device 21, and the tool radius correction amount calculation unit 201. Tool radius correction information TC, cutting correction conditions determined by the machining trajectory calculation unit 202 to perform either cutting with left tool radius correction or cutting with right tool radius correction, and machining conditions CP The tool radius correction control signal TS is generated based on the vibration direction control information included in the. Further, the machining locus calculation unit 202 outputs a tool radius correction control signal TS to the drive control unit 203.

  The drive control unit 203 generates a drive control signal CS for controlling the processing machine body 100 based on the tool radius correction control signal TS. Specifically, the drive control unit 203, based on the tool radius correction control signal TS, the nozzle drive control signal NCS for controlling the movement of the nozzle 106 (nozzle center point CN), and the locus of the beam spot BS of the laser beam ( A beam drive control signal BCS for controlling the vibration pattern VP) and the vibration direction is generated. Further, the drive control unit 203 outputs a nozzle drive control signal NCS to the processing machine main body 100 and outputs a beam drive control signal BCS to the tool locus control unit 300 of the processing machine main body 100.

  The NC device 200 controls the laser oscillator 10 based on the machining program PP and the machining condition CP. Specifically, the machining trajectory calculation unit 202 of the NC apparatus 200 includes a beam output including output control information for performing on / off control of the output of the laser beam in which the beam spot BS vibrates in a specified direction on the vibration pattern VP. A control signal BOS is generated. Further, the machining locus calculation unit 202 outputs a beam output control signal BOS to the laser oscillator 10.

  The NC apparatus 200 generates synchronization signals SS1 and SS2 for synchronizing the laser oscillator 10 and the tool path control unit 300, and outputs them to the laser oscillator 10 and the tool path control unit 300. In the NC device 200, the machining locus calculation unit 202 may generate the synchronization signal SS1 and output it to the laser oscillator 10, and the drive control unit 203 may generate the synchronization signal SS2 and output it to the tool locus control unit 300.

  7A and 7B, a vibration pattern VP in which the beam spot BS of the laser beam vibrates in the rotation direction is designated as the processing condition CP, and the tool path TP is an inverted C obtained by horizontally inverting the alphabet C. A case will be described in which output control information for controlling the output of the laser beam to include a drawn shape is included, and G41 (left tool radius correction) is designated as the G code in the machining program PP.

  7A and 7B show the relationship between the vibration pattern VP and vibration direction of the beam spot BS and the tool trajectory TP when the G code is G41. In FIG. 7A and FIG. 7B, as an example of the vibration pattern VS, a vibration pattern in which the beam spot BS vibrates in the rotation direction is indicated by a one-dot chain line. 7A and 7B correspond to FIG. 3A.

  The beam spot BS rotates and vibrates on the vibration pattern VP. The arrows shown in FIGS. 7A and 7B indicate the vibration direction (rotation direction) of the beam spot BS. In FIG. 7A and FIG. 7B, the beam spot BS when the laser beam is in an ON state at a HIGH level is indicated by a solid circle, and the beam spot BS when the laser beam is in an OFF state at a LOW level is indicated by a dashed circle. Yes.

  A symbol TP indicates a tool path. In a state where the laser oscillator 10 and the tool trajectory control unit 300 are synchronized, as shown in FIG. 7A, FIG. 7B, or FIG. 4A, the laser beam starts at the start point corresponding to the start position SP1 on the vibration pattern VP. It is turned on at ST1 and turned off at an end time ET1 corresponding to the end position EP1 on the vibration pattern VP.

  Therefore, the tool locus TP shown in FIGS. 7A and 7B corresponds to the locus of the beam spot BS from the start position SP1 to the end position EP1 on the vibration pattern VP. FIG. 7A shows a case where the end position EP1 corresponds to the machining surface formation position MPL. FIG. 7B shows a case where the start position SP1 corresponds to the machining surface formation position MPL.

  The CAM device 21 can specify whether the workpiece W is to be cut in the forward direction or the reverse direction at the machining surface formation position MPL or MPR. The machining condition CP includes vibration direction control information that specifies whether the workpiece W is to be cut in the forward direction or the reverse direction at the machining surface formation position MPL or MPR.

  The CAM device 21 outputs the machining program PP and the machining conditions CP to the NC device 200 of the cutting machine 1. The NC device 200 translates the G code and controls the tool trajectory control unit 300 based on the machining program PP, the machining condition CP, and the translated G code G41.

  As vibration direction control information, as shown in FIG. 7A or FIG. 7B, when the direction of cutting the workpiece W at the machining surface formation position MPL is designated as the forward direction or the reverse direction, the NC device 200 The tool path control unit 300 is controlled so that the BS vibrates clockwise or counterclockwise on the vibration pattern VP. The NC device 200 controls the laser oscillator 10 based on the machining program PP and the machining condition CP.

  Accordingly, the processing machine main body 100 moves the tool trajectory TP having an inverted C shape in the traveling direction DT based on the tool radius correction value MVL, thereby moving the workpiece W in the forward or reverse direction at the processing surface forming position MPL. Cutting in the direction.

  8, 9A, 9B, 9C, 9D, and 9E, the direction of cutting the workpiece W at the machining surface formation position MPL is designated as the forward direction, and the cutting process is performed. A case where the traveling direction DT is changed during cutting will be described. 8A and 8B, the workpiece W is cut in the horizontal direction (+ X direction) at the machining surface formation position MPL using the tool trajectory TP shown in FIG. 7A, further cut into an arc shape, and further in the vertical direction (− The case of cutting in the Y direction) is shown.

  FIG. 9A shows the relationship between the period during which the laser beam is turned on and the position of the beam spot BS on the vibration pattern VP. 9B to 9E show the relationship between the pulse driving of the laser beam and the position of the beam spot BS on the vibration pattern VP. 9A to 9E, the vertical axis represents the output value (relative value) of the laser beam, and the horizontal axis represents the position of the beam spot BS on the vibration pattern VP.

  FIG. 9A corresponds to FIG. 8 and uses the tool trajectory TP shown in FIG. 7A to cut the workpiece W in the horizontal direction at the machining surface formation position MPL, and further cut it into an arc shape, and further in the vertical direction. Fig. 6 shows the case of cutting.

  When cutting the workpiece W at the machining surface formation position MPL using the tool trajectory TP shown in FIG. 7A, drive control is performed in a state where the output of the laser beam is on / off controlled as shown in FIG. 4A. The unit 203 controls the phase of the laser beam by controlling the tool path control unit 300 with the beam drive control signal BCS.

  As shown in FIG. 8, the workpiece W is cut in the horizontal direction (+ X direction) using the tool path TP shown in FIG. 7A, further cut in an arc shape, and further in the vertical direction (−Y direction). The case of cutting will be described.

  Since the moving speed of the beam spot BS forming the tool locus TP is faster than the moving speed of the nozzle 106, the drive control unit 203 continuously controls the phase of the laser beam according to the cutting progress direction DT. can do. For easy understanding, FIG. 8 shows four tool paths TPa, TPb, TPc of the tool paths TP in which the phase of the laser beam is continuously changed according to the cutting direction DT. Only TPd is shown.

  Tool trajectories TPa, TPb, TPc, and TPd shown in FIG. 8 correspond to the tool trajectory TP shown in FIG. 7A. When the + X direction is used as a reference, the angles of the cutting process progress direction DT of the tool trajectories TPa, TPb, TPc, and TPd with respect to the + X direction are, for example, 0 °, 30 °, 60 °, and 90 °. FIG. 9A shows only a period in which the laser beams corresponding to the tool trajectories TPa, TPb, TPc, and TPd are in the on state.

  When cutting the workpiece W in the horizontal direction (DT = 0 °), the drive control unit 203 controls the tool trajectory control unit 300 so that the beam spot BS is 270 on the vibration pattern VP as shown in FIG. 9B. A tool trajectory TPa is formed in which the laser beam is turned on when reaching the position of ° and the laser beam is turned off when reaching the position of 90 °. FIG. 9B corresponds to FIG. 5A.

  When the angle of the traveling direction DT with respect to the + X direction is 30 ° (DT = 30 °), the drive control unit 203 controls the tool locus control unit 300, and the beam spot BS vibrates as shown in FIG. 9C. When the position of 300 ° on the pattern VP is reached, the laser beam is turned on, and when the position of 120 ° is reached, the tool path TPb is formed in which the laser beam is turned off. That is, the drive control unit 203 forms a tool locus TPb that is shifted by 30 ° (θb = 30 °) in accordance with the traveling direction DT with respect to the tool locus TPa (θa = 0 °).

  When the angle of the traveling direction DT with respect to the + X direction is 60 ° (DT = 60 °), the drive control unit 203 controls the tool locus control unit 300, and the beam spot BS vibrates as shown in FIG. 9D. When the position of 330 ° on the pattern VP is reached, the laser beam is turned on, and when the position of 150 ° is reached, the tool locus TPc is formed in which the laser beam is turned off. That is, the drive control unit 203 forms a tool locus TPc that is shifted by 60 ° (θc = 60 °) according to the traveling direction DT with respect to the tool locus TPa.

  When cutting the workpiece W in the vertical direction (DT = 90 °), the drive control unit 203 controls the tool path control unit 300 so that the beam spot BS is 0 on the vibration pattern VP as shown in FIG. 9E. A tool trajectory TPd is formed in which the laser beam is turned on when reaching the position of ° and the laser beam is turned off when reaching the position of 180 °. FIG. 9E corresponds to FIG. 5B. That is, the drive control unit 203 forms a tool locus TPd shifted by 90 ° (θd = 90 °) according to the traveling direction DT with respect to the tool locus TPa.

  For ease of explanation, FIGS. 8 and 9A to 9E have described four tool trajectories TPa, TPb, TPc, and TPd. The tool trajectory TP is continuously changed according to DT. Therefore, since the traveling direction DT is continuously changed in the tool trajectories TPa, TPb, TPc, and TPd, the start angle and the end angle of each tool trajectory TPa, TPb, TPc, and TPd are actually It changes with time according to the advancing direction DT.

  Therefore, the drive control unit 203 can control the phase of the laser beam according to the traveling direction DT in which the workpiece W is cut by controlling the tool locus control unit 300 with the beam drive control signal BCS. . Thereby, the cutting machine 1 can make the shape of the tool locus TP constant with respect to the traveling direction DT even when the traveling direction DT is changed during cutting.

  10A and 10B, a vibration pattern VP in which the beam spot BS of the laser beam vibrates in the rotation direction is designated as the machining condition CP, and the tool path TP is an inverted C obtained by reversing the alphabet C from left to right. A case will be described in which output control information for controlling the output of the laser beam so as to obtain a drawn shape is included, and G42 (right tool radius correction) is designated as the G code in the machining program PP.

  10A and 10B show the relationship between the vibration pattern VP and vibration direction of the beam spot BS and the tool trajectory TP when the G code is G42. In FIG. 10A and FIG. 10B, as an example of the vibration pattern VS, a vibration pattern in which the beam spot BS vibrates in the rotation direction is indicated by a one-dot chain line. 10A and 10B correspond to FIG. 3A.

  The beam spot BS rotates and vibrates on the vibration pattern VP. The arrows shown in FIGS. 10A and 10B indicate the vibration direction (rotation direction) of the beam spot BS. In FIG. 10A and FIG. 10B, the beam spot BS when the laser beam is in an ON state at a HIGH level is indicated by a solid circle, and the beam spot BS when the laser beam is in an OFF state at a LOW level is indicated by a broken circle. Yes.

  A symbol TP indicates a tool path. In a state where the laser oscillator 10 and the tool trajectory control unit 300 are synchronized, as shown in FIG. 10A, FIG. 10B, or FIG. 4A, the laser beam starts at the start point corresponding to the start position SP1 on the vibration pattern VP. It is turned on at ST1 and turned off at an end time ET1 corresponding to the end position EP1 on the vibration pattern VP.

  Accordingly, the tool trajectory TP shown in FIGS. 10A and 10B corresponds to the trajectory of the beam spot BS from the start position SP1 to the end position EP1 on the vibration pattern VP. FIG. 10A shows a case where the end position EP1 corresponds to the machining surface formation position MPR. FIG. 10B shows a case where the start position SP1 corresponds to the machining surface formation position MPR.

  The NC device 200 translates the G code, and controls the tool path control unit 300 based on the machining program PP, the machining condition CP, and the translated G code G42. As vibration direction control information, as shown in FIG. 10A or FIG. 10B, when the direction of cutting the workpiece W at the machining surface forming position MPR is designated as the forward direction or the reverse direction, the NC device 200 The tool path control unit 300 is controlled such that the BS vibrates counterclockwise or clockwise on the vibration pattern VP. The NC device 200 controls the laser oscillator 10 based on the machining program PP and the machining condition CP.

  Thereby, the processing machine main body 100 moves the tool trajectory TP having an inverted C shape in the traveling direction DT based on the tool radius correction value MVR, thereby moving the workpiece W in the forward direction or the reverse direction at the processing surface forming position MPR. Cutting in the direction.

  Even when the G code is G42, as in the case where the G code is G41, the drive control unit 203 controls the tool path control unit 300 with the beam drive control signal BCS, thereby changing the phase of the laser beam. Control can be performed in accordance with the traveling direction DT in which the workpiece W is cut. Thereby, even when the advancing direction DT is changed during cutting, the shape of the tool trajectory TP can be made constant with respect to the advancing direction DT.

  Using FIG. 11A, FIG. 11B, and FIG. 12, a vibration pattern VP that vibrates so that the beam spot BS of the laser beam draws the numeral 8 is designated as the processing condition CP, and the tool locus TP continues in reverse C. A case will be described in which output control information for controlling the output of the laser beam is included so as to obtain a shape to be drawn, and G41 or G42 is designated as the G code in the machining program PP.

  FIG. 11A and FIG. 11B show vibration patterns having a shape in which the beam spot BS draws the number 8 as an example of the vibration pattern VS. The vibration pattern VP of the beam spot BS may be a free shape including a non-circular shape.

  FIG. 12 corresponds to FIG. 4A or FIG. 4B and shows the pulse driving period of the laser beam. The vertical axis in FIG. 12 indicates the output value (relative value) of the laser beam, and the horizontal axis indicates the time axis. Reference numeral 1PRD shown in FIG. 12 indicates one cycle in pulse driving.

  As shown in FIG. 11A, FIG. 11B, or FIG. 12, the laser beam is turned on at the start time point ST3 corresponding to the start position SP3 on the vibration pattern VP, and the first corresponding to the first intermediate position SP4. Is turned off at the intermediate point ST4, turned on at the second intermediate point ST5 corresponding to the second intermediate position SP5, and off at the third intermediate point ST6 corresponding to the third intermediate position SP6. It becomes.

  In FIG. 11A, the start position SP3 and the second intermediate position SP5 correspond to the nozzle center point CN and the control center point CL, the first intermediate position SP4 corresponds to the machining surface formation position MPL, and the third intermediate position SP6. Corresponds to the machining surface formation position MPR. In FIG. 11B, the start position SP3 corresponds to the machining surface forming position MPR, the first and third intermediate positions SP4 and SP6 correspond to the nozzle center point CN and the control center point CL, and the second intermediate position SP5 is processed. A case corresponding to the surface formation position MPL is shown.

  The CAM device 21 outputs the machining program PP and the machining conditions CP to the NC device 200 of the cutting machine 1. The machining condition CP includes vibration direction control information that specifies whether the workpiece W is to be cut in the forward direction or the reverse direction at the machining surface formation position MPL or MPR. The NC device 200 translates the G code, and controls the tool path control unit 300 based on the machining program PP, the machining condition CP, and the translated G code G41 or G42.

  As vibration direction control information, as shown in FIG. 11A or FIG. 11B, when the direction of cutting the workpiece W at the machining surface formation positions MPL and MPR is designated as the forward direction or the reverse direction, the NC device 200 The tool trajectory controller 300 is controlled so that the beam spot BS moves in the forward direction or the reverse direction at the machining surface formation position MPL or MPR on the vibration pattern VP. The NC device 200 controls the laser oscillator 10 based on the machining program PP and the machining condition CP.

  Thereby, the processing machine main body 100 moves the tool trajectory TP having a shape that continuously draws the reverse C in the advancing direction DT based on the tool radius correction value MVL or MVR, thereby forming the processing target object W on the processing surface. Cutting is performed in the forward direction or the reverse direction at the position MPL or MPR.

  An example of a cutting method when vibration direction control information is set as the machining condition CP will be described using the flowcharts shown in FIGS. 13A and 13B. 13A and 13B correspond to FIGS. 6A and 6B.

  In step S21 of the flowchart shown in FIG. 13A, the CAD device 20 generates product shape data SD based on the product shape information including the size and shape of the final processed product. Further, the CAD device 20 outputs the product shape data SD to the CAM device 21.

  In step S22, the CAM device 21 generates a machining program PP (including a G code) for the cutting machine 1 based on the product shape data SD, and designates a machining condition CP. The machining condition CP includes vibration direction control information that specifies whether the workpiece W is to be cut in the forward direction or the reverse direction at the machining surface formation position MPL or MPR. Further, the CAM device 21 outputs the machining program PP and the machining condition CP to the tool radius correction amount calculation unit 201 and the machining locus calculation unit 202 of the NC device 200 of the cutting machine 1.

  In the NC apparatus 200, the tool radius correction amount calculation unit 201 generates tool radius correction information TC for correcting the tool radius of the tool path TP based on the machining program PP and the machining condition CP in step S23. . Further, the tool radius correction amount calculation unit 201 outputs the tool radius correction information TC to the machining locus calculation unit 202.

  The machining locus calculation unit 202 receives the machining program PP and the machining condition CP from the CAM device 21 in step S22, and receives the tool radius correction information TC from the tool radius correction amount calculation unit 201 in step S23. In step S24, the machining locus calculation unit 202 translates the G code included in the machining program PP. Further, the machining locus calculation unit 202 determines a cutting correction condition for either cutting with the left tool radius correction or cutting with the right tool radius correction based on the translation result.

  In step S25, the machining locus calculating unit 202 is included in the machining program PP, the machining condition CP, the tool radius correction information TC, the cutting correction condition determined in step S24, and the machining condition CP. Based on the vibration direction control information, a tool radius correction control signal TS is generated. Further, the machining locus calculation unit 202 outputs a tool radius correction control signal TS to the drive control unit 203.

  The drive control unit 203 generates a drive control signal CS for controlling the processing machine body 100 based on the tool radius correction control signal TS. Specifically, in step S26, the drive control unit 203 generates a nozzle drive control signal NCS for controlling the movement of the nozzle 106 (nozzle center point CN) based on the tool radius correction control signal TS.

  In step S27, the drive control unit 203 generates a beam drive control signal BCS for controlling the locus (vibration pattern VP) of the beam spot BS of the laser beam and the vibration direction based on the tool radius correction control signal TS. Further, the drive control unit 203 outputs a nozzle drive control signal NCS to the processing machine main body 100 and outputs a beam drive control signal BCS to the tool locus control unit 300 of the processing machine main body 100.

  In step S28 of the flowchart shown in FIG. 13B, the processing locus calculation unit 202 sets the processing time point CP to the start time and the off state corresponding to the start position where the laser beam is turned on with respect to the laser beam vibration pattern VP. It is recognized whether or not the output control information in which the end time corresponding to the end position is set is included. Alternatively, the machining locus calculation unit 202 includes output control information in which a start time corresponding to a start position where the laser beam is turned on and a duty ratio in pulse driving are set with respect to the vibration pattern VP of the laser beam. Recognize whether or not.

  When the output control information is not included in the processing condition CP, the processing trajectory calculation unit 202 does not perform on / off control of the laser beam emitted from the laser oscillator 10. Accordingly, when the output control information is not included in the machining condition CP, the tool locus TP corresponds to the vibration pattern VP of the laser beam.

  When the output control information is included in the processing condition CP, the processing locus calculation unit 202 performs on / off control of the laser beam emitted from the laser oscillator 10. In step S29, the machining locus calculation unit 202 generates a beam output control signal BOS for controlling the laser oscillator 10 based on the machining program PP and the machining condition CP. Specifically, the machining trajectory calculation unit 202 has an output set so that the laser beam is turned on at a predetermined start position on the vibration pattern VP of the laser beam and the laser beam is turned off at a predetermined end position. A beam output control signal BOS including control information is generated.

  When the laser oscillator 10 and the tool locus control unit 300 are synchronized with each other and the laser oscillator 10 is pulse-driven, the machining locus calculation unit 202 turns on the laser beam at a predetermined start position on the vibration pattern VP of the laser beam. The beam output control signal BOS including the output control information set so that the laser beam is turned off according to the duty ratio in the pulse drive is generated. Further, the machining locus calculation unit 202 outputs a beam output control signal BOS to the laser oscillator 10.

  In step S30, the NC device 200 outputs synchronization signals SS1 and SS2 for synchronizing the laser oscillator 10 and the tool path control unit 300 to the laser oscillator 10 and the tool path control unit 300. If the laser oscillator 10 and the tool path control unit 300 are synchronized, step S10 may be omitted.

  In step S31, the laser oscillator 10 outputs the laser beam so that the laser beam is turned on at the start time and turned off at the end time corresponding to the duty ratio based on the beam output control signal BOS. To control.

  In step S32, the processing machine main body 100 synchronizes the tool path control unit 300 with the laser oscillator 10, and the beam spot BS of the laser beam is designated on the designated vibration pattern VP based on the beam drive control signal BCS. The tool trajectory control unit 300 is driven to vibrate in the vibration direction. The cutting machine 1 controls the tool trajectory TP by vibrating the beam spot BS in the designated vibration direction on the designated vibration pattern VP and controlling the output of the laser beam.

  In step S33, the processing machine main body 100 controls the movement of the nozzle 106 based on the nozzle drive control signal NCS. Specifically, the processing machine main body 100, based on the nozzle drive control signal NCS, causes the X-axis carriage 102 and the Y-axis carriage 103 so that the nozzle center point CN of the nozzle 106 moves on the nozzle locus NP in the traveling direction DT. Drive.

  The timing of step S31, step S32, and step S33 is controlled based on the machining program PP and the machining condition CP. In steps S31 to S33, the cutting machine 1 cuts the workpiece W by moving the tool trajectory TP in the traveling direction DT based on the tool radius correction value MVL or MVR.

  When the processing based on the processing program PP is completed, the cutting machine 1 ends the cutting of the workpiece W. Specifically, the NC device 200 of the cutting machine 1 controls the laser oscillator 10 to stop laser beam control and injection, and controls the machine main body 100 to control the tool path control unit 300 and the X-axis carriage 102. And the drive of the Y-axis carriage 103 is stopped.

  In the cutting machine and the cutting method of the present embodiment, tool radius correction information TC including correction information based on the tool trajectory TP and correction information based on the nozzle trajectory NP is generated. In the cutting machine and the cutting method of the present embodiment, the nozzle locus NP and the tool locus TP are obtained by controlling the drive of the machining unit 104 and the drive of the tool locus control unit 300 based on the tool radius correction information TC. Control. Therefore, according to the cutting machine and the cutting method of the present embodiment, the tool diameter of the cutting tool can be accurately corrected even if the cutting trace is non-circular.

  In the cutting machine and the cutting method of the present embodiment, the shape of the tool trajectory TP is controlled by vibrating the beam spot BS of the laser beam with the specified vibration pattern VP and controlling the output of the laser beam. . In the cutting machine and the cutting method according to the present embodiment, the laser beam is turned on for a predetermined period corresponding to the tool trajectory TP with respect to the beam spot BS that vibrates with a specified vibration pattern. According to the cutting machine and the cutting method of the present embodiment, the workpiece W can be irradiated with a high-power laser beam only for a predetermined period, so that the workpiece W can be cut with high accuracy. .

  If the output of the laser beam is not controlled, a load may be generated when the galvano scanner unit 340 of the tool path control unit 300 is driven depending on the shape of the tool path TP. For example, when the tool trajectory TP has a shape that draws an alphabet C or reverse C, the vibration pattern VP is circular, so that the vibration pattern VP has a shape that draws alphabet C or reverse C. The load generated when the galvano scanner unit 340 is driven can be reduced.

  In the cutting machine and the cutting method according to the present embodiment, when the machining condition CP includes vibration direction control information in which the direction of cutting the workpiece W at the machining surface formation position MPL or MPR is included in the machining condition CP, Based on the direction control information, the laser beam is controlled so that the beam spot BS vibrates in the designated direction on the designated vibration pattern VP. Thereby, the workpiece W can be cut by the designated tool trajectory TP and the cutting direction designated in the forward direction or the reverse direction in at least one of the machining surface formation positions MPL and MPR.

  In the cutting machine and the cutting method according to this embodiment, the drive control unit 203 controls the tool trajectory control unit 300 with the beam drive control signal BCS, so that the phase of the laser beam is advanced and the workpiece W is cut. It can be controlled according to the direction DT. Therefore, according to the cutting machine and the cutting method of the present embodiment, the shape of the tool trajectory TP can be made constant with respect to the traveling direction DT even when the traveling direction DT is changed during cutting. .

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the present invention. In the cutting machine and the cutting method of the present embodiment, the laser processing machine and the laser processing method have been described as examples. However, the present invention can be applied to, for example, a water jet processing machine.

DESCRIPTION OF SYMBOLS 1 Cutting machine 10 Laser oscillator 100 Processing machine main body 104 Processing unit 200 NC apparatus 201 Tool diameter correction amount calculating part 202 Machining locus calculating part 203 Drive control part 300 Tool locus control part BCS Beam drive control signal BOS Beam output control signal CP Machining Condition PP Machining program TC Tool radius compensation information TP Tool path TS Tool radius compensation control signal VP Vibration pattern W Object to be machined

Claims (10)

A laser oscillator for emitting a laser beam;
A processing machine main body for irradiating a workpiece with the laser beam and cutting the workpiece,
NC apparatus for controlling the laser oscillator and the processing machine main body;
With
The NC device
A cutting tool for cutting the workpiece based on a machining program and machining conditions set based on product shape information including the size and shape of the final processed product obtained by cutting the workpiece. A tool radius correction amount calculation unit for generating tool radius correction information for correcting the tool radius of
Based on the machining program, the machining conditions, and the tool radius correction information, a machining locus calculation unit that generates a tool radius correction control signal including a cutting correction condition;
Based on the tool radius correction control signal, a drive control unit for controlling the processing machine body,
Have
The processing machine body is
A machining unit that cuts the workpiece by changing a relative position with the workpiece;
A tool trajectory control unit that vibrates a beam spot formed by irradiating the workpiece with the laser beam in a non-circular vibration pattern;
Have
The drive control unit generates a beam drive control signal for controlling the tool trajectory control unit based on the tool radius correction control signal so that the beam spot vibrates in the vibration pattern,
The tool trajectory control unit controls the laser beam based on the beam drive control signal so that the beam spot vibrates in the vibration pattern;
The processing locus calculation unit recognizes whether or not the processing conditions include output control information for controlling the output of the laser beam,
When the output control information is included in the processing conditions,
The processing locus calculation unit generates a beam output control signal for controlling the laser oscillator so that the output of the laser beam in which the beam spot vibrates in the vibration pattern is controlled,
The laser oscillator controls the output of the laser beam based on the beam output control signal,
The said processing machine main body cuts the said process target object with the tool locus | trajectory corresponded to the locus | trajectory of the said beam spot when the said laser beam is an ON state corresponding to the said cutting tool. The cutting machine according to claim 1, wherein when the output control information is not included in the processing conditions, the processing machine body cuts the processing object by a tool locus corresponding to the vibration pattern. The output control information includes a start time corresponding to a start position where the laser beam is turned on with respect to the vibration pattern, an end time corresponding to an end position where the laser beam is turned off, and the laser for the vibration pattern. The cutting machine according to claim 1, wherein one of a start time corresponding to a start position at which the beam is turned on and a duty ratio for setting a period during which the laser beam is turned on is set. The cutting machine according to claim 3, wherein the drive control unit controls the phase of the laser beam by controlling the tool path control unit by the tool radius correction control signal. The NC device outputs a synchronization signal for synchronizing the laser oscillator and the tool path control unit to the laser oscillator and the tool path control unit. Cutting machine. A laser oscillator for emitting a laser beam;
A processing machine main body for irradiating a workpiece with the laser beam and cutting the workpiece,
NC apparatus for controlling the laser oscillator and the processing machine main body;
With
The NC device
A cutting tool for cutting the workpiece based on a machining program and machining conditions set based on product shape information including the size and shape of the final processed product obtained by cutting the workpiece. A tool radius correction amount calculation unit for generating tool radius correction information for correcting the tool radius of
Based on the machining program, the machining conditions, and the tool radius correction information, a machining locus calculation unit that generates a tool radius correction control signal including a cutting correction condition;
Based on the tool radius correction control signal, a drive control unit for controlling the processing machine body,
Have
The processing machine body is
A machining unit that cuts the workpiece by changing a relative position with the workpiece;
A tool trajectory control unit that vibrates a beam spot formed by irradiating the workpiece with the laser beam in a non-circular vibration pattern;
Have
The processing locus calculation unit recognizes whether or not the processing condition includes vibration direction control information for controlling a vibration direction of the laser beam,
When the vibration direction control information is included in the processing conditions,
The machining locus calculation unit generates the tool radius correction control signal based on the vibration direction control information,
The drive control unit generates a beam drive control signal for controlling the tool trajectory control unit based on the tool radius correction control signal so that the beam spot vibrates in a designated vibration direction on the vibration pattern. ,
The tool trajectory control unit controls the laser beam so that the beam spot vibrates in a designated vibration direction on the vibration pattern based on the beam drive control signal,
The processing machine body cuts the workpiece by a tool trajectory corresponding to the trajectory of the beam spot that corresponds to the cutting tool and vibrates in the specified vibration direction on the vibration pattern. Machine. Based on a machining program and machining conditions set based on product shape information including dimensions and shape of a final processed product obtained by cutting the workpiece, the cutting tool for cutting the workpiece is processed. Generate tool radius correction information to correct the tool radius,
Based on the machining program, the machining conditions, and the tool radius correction information, a tool radius correction control signal including a cutting correction condition is generated,
Based on the tool radius correction control signal, the laser beam is controlled so that a beam spot formed by irradiating the workpiece with the laser beam vibrates in a non-circular vibration pattern,
Recognizing whether the processing conditions include output control information for controlling the output of the laser beam,
When the output control information is included in the processing conditions, the output of the laser beam that the beam spot vibrates in the vibration pattern is controlled,
The cutting method which cuts the said process target object with the tool locus | trajectory corresponded to the said cutting tool and corresponding to the locus | trajectory of the said beam spot when the said laser beam is an ON state. The cutting method according to claim 7, wherein when the output condition is not included in the processing condition, the processing target is cut by a tool locus corresponding to the vibration pattern. The output control information includes a start time corresponding to a start position where the laser beam is turned on with respect to the vibration pattern, an end time corresponding to an end position where the laser beam is turned off, and the laser for the vibration pattern. The cutting process according to claim 7 or 8, wherein one of a start time corresponding to a start position at which the beam is turned on and a duty ratio for setting a period during which the laser beam is turned on is set. Method. Cutting the workpiece based on the machining program and machining conditions set based on the product shape information including the size and shape of the final machined product obtained by cutting the workpiece with a laser beam. Generate tool radius correction information to correct the tool radius of the cutting tool,
Recognizing whether or not the processing conditions include vibration direction control information for controlling the vibration direction of the laser beam,
When the vibration direction control information is included in the processing conditions,
A tool radius correction control signal is generated based on the vibration direction control information,
Based on the tool radius correction control signal, the laser beam is formed such that a beam spot formed by irradiating the workpiece with the laser beam vibrates in a designated vibration direction on a non-circular vibration pattern. Control the beam,
A cutting method that cuts the workpiece by a tool trajectory that corresponds to the cutting tool and that corresponds to the trajectory of the beam spot that vibrates in a specified vibration direction on the vibration pattern.

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