WO2022215476A1 - Dispositif de traitement d'informations et programme de traitement d'informations - Google Patents

Dispositif de traitement d'informations et programme de traitement d'informations Download PDF

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Publication number
WO2022215476A1
WO2022215476A1 PCT/JP2022/012308 JP2022012308W WO2022215476A1 WO 2022215476 A1 WO2022215476 A1 WO 2022215476A1 JP 2022012308 W JP2022012308 W JP 2022012308W WO 2022215476 A1 WO2022215476 A1 WO 2022215476A1
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WO
WIPO (PCT)
Prior art keywords
tool
machining
information processing
division point
program
Prior art date
Application number
PCT/JP2022/012308
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English (en)
Japanese (ja)
Inventor
浩也 坂本
Original Assignee
Dmg森精機株式会社
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Filing date
Publication date
Application filed by Dmg森精機株式会社 filed Critical Dmg森精機株式会社
Publication of WO2022215476A1 publication Critical patent/WO2022215476A1/fr

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4061—Avoiding collision or forbidden zones
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
    • G05B19/4069—Simulating machining process on screen
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4155—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme

Definitions

  • the present invention relates to an information processing device and an information processing program.
  • Patent Document 1 discloses a technique for reducing the feed rate when interference is detected. With this technology, after checking for interference, simulations are performed at multiple feed speeds, and by reducing the feed speed, a "sloppy trajectory" is avoided, and as a result, interference is avoided.
  • the machine tool includes: a first code for stopping the movement of the tool when a tool or tool attachment enters a predetermined area around another portion of the machine tool within the machine tool, or the speed of movement of the tool in the predetermined area; A machine tool capable of executing a machining program containing a second code for reducing a tool attachment portion to which a tool can be attached; a numerical control unit that executes the machining program and moves the tool mounting portion; a selection unit that selects a first mode in which the first and second codes are executed and a second mode in which the first and second codes are not executed; with The numerical control unit is a machine tool that executes the machining program based on selection by the selection unit and moves the tool mounting unit.
  • the device comprises: In a machining simulation before machining by a machine tool, a position where at least one of the tool and the tool mounting portion enters a predetermined area around at least one of the workpiece, the jig and the machine cover is determined as the first dividing point. a determination unit; a machining program generation unit that generates a machining program including a code for temporarily stopping the tool or reducing the moving speed of the tool at the first division point; It is an information processing device comprising
  • the program according to the present invention is In a machining simulation before machining with a machine tool, the position coordinates at which at least one of the tool and the tool mounting portion enters a predetermined area around at least one of the workpiece, the jig, and the machine cover are determined as the first division point.
  • a determination step to a machining program generation step of generating a machining program so as to temporarily stop the tool or reduce the moving speed of the tool at the first division point; is an information processing program that causes a computer to execute
  • FIG. 1 is a block diagram showing the configuration of an information processing apparatus according to a first embodiment
  • FIG. It is a block diagram which shows the structure of the information processing apparatus which concerns on 2nd Embodiment. It is a figure explaining the process of the information processing apparatus which concerns on 2nd Embodiment. It is a figure explaining the process of the information processing apparatus which concerns on 2nd Embodiment. It is a figure explaining the process of the information processing apparatus which concerns on 2nd Embodiment. It is a figure explaining the process of the information processing apparatus which concerns on 2nd Embodiment.
  • the information processing apparatus 100 is a device that generates a machining program.
  • the information processing device 100 includes a determination unit 101 and a machining program generation unit 102.
  • the determination unit 101 determines that at least one of the tool 111 and the tool mounting unit (such as the tool spindle and the tool post) 112 is in the simulation before machining by the machine tool 110, the workpiece 113, the jig 114, and the machine cover (not shown). ) is determined as the first division point.
  • the machining program generation unit 102 generates the machining program 120 so as to temporarily stop the tool 111 or reduce the moving speed of the tool 111 at the first division point.
  • the tool will automatically stop temporarily or reduce its movement speed in an area where interference is likely to occur in the interference check on the machine tool 110. can reliably check for interference without extra operations.
  • FIG. 2 is a diagram for explaining the information processing device 200 according to this embodiment.
  • the information processing device 200 is an NC simulator, performs machining simulation according to the NC program 230 as the machining program generated by the CAM 240, and updates the NC program 230 as the machining program used in the numerical controller 220.
  • Information processing apparatus 200 includes NC simulation section 201 , determination section 202 , and NC program update section 203 .
  • the CAM 240 has a main processor section 241 and a post-processor section 242 .
  • the main processor unit 241 generates CL data 243 based on shape data acquired from a CAD (Computer-Aided Design) 260 .
  • a post-processor section 242 generates an NC program 230 from the CL data 243 .
  • the NC program 230 is sent to the information processing device 200 together with work information and jig information 270 .
  • the NC simulation unit 201 performs machining simulation based on the NC program 230 generated by the CAM 240 .
  • the determination unit 202 determines the position coordinates at which at least one of the tool and the tool mounting portion enters a predetermined area around at least one of the workpiece, the jig, and the machine cover as the first division point in the machining simulation. In other words, the division point where the work/jig/tool/machine cover is closer than the distance specified in advance in the positioning operation during the simulation is recognized.
  • the NC program updating unit 203 generates an updated NC program 250 that temporarily stops the tool or reduces the moving speed of the tool at the first division point. That is, based on the breakpoint, update the NC program and add tags (M-code) to pause or slow down.
  • the updated NC program 250 is input to the numerical controller 220 .
  • the numerical controller 220 is a device that numerically controls machining in the machine tool 210 , and includes an NC interpreter 221 that interprets the NC program 230 and a command output unit 222 that outputs control commands to the machine tool 210 .
  • Examples of the machine tool 210 include a machine that performs additive manufacturing on a work, a machine that performs subtractive manufacturing on a work, and a machine that processes by irradiating light such as a laser.
  • lathes, drilling machines, boring machines, milling machines, gear cutting machines, grinders, multi-axis processing machines, laser processing machines, lamination processing machines, etc. are numerically controlled based on NC programs, Any machine that performs various processing such as turning, cutting, drilling, grinding, polishing, rolling, forging, bending, forming, fine processing, and lamination processing on a work of wood, stone, resin, or the like may be used.
  • the machine tool may have a measurement function, and may be configured to be able to measure the dimensions of the workpiece using a measuring instrument such as a touch probe or a camera.
  • the machine tool 210 is, for example, a three-axis machine, and includes a main shaft motor 211 and a feed shaft motor 212 as machine elements.
  • a spindle motor 211 rotates the tool, and a feed shaft motor 212 linearly moves the table in the X and Y axis directions via a ball screw or the like, or linearly moves the tool or the table in the Z axis direction.
  • the machine tool 210 may of course be a 5-axis machine.
  • the spindle motor servo controller 213 controls the spindle motor 211 based on the control command from the command output unit 222 .
  • the feed shaft motor servo controller 214 controls the feed shaft motor 212 based on control commands from the command output unit 222 .
  • the numerical controller 220 interprets the updated NC program 250, recognizes the tag (M code) embedded in the program, and outputs a special control command to the machine tool 210.
  • This control command is sent to various controllers 213 and 214, and the main shaft motor 211 and the feed shaft motor 212 are "temporarily stopped” or "low-speed rotated” at predetermined positions.
  • the above "pause” or “speed reduction” may be enabled only in the "prototype mode” instead of the "mass production mode” in the machine tool 210.
  • FIG. "Prototype mode” and “mass production mode” are modes that can be selected on the operation panel of the machine tool when performing program checks on the machine tool. In the present embodiment, two modes of "prototype mode” and “mass production mode” are described as examples, but the present invention is not limited to this, and the machine tool 210 is provided with other modes. good too.
  • the machine tool 210 has a first code for stopping the movement of the tool at a position where the tool or tool mount is a predetermined distance from the rest of the machine tool, or a first code for slowing the movement of the tool at that position.
  • a machining program containing a second code (eg M998) is executable.
  • the machine tool 210 includes a tool attachment portion to which a tool can be attached, a numerical control device 220 that executes a machining program and moves the tool attachment portion, a first mode that executes a first or second code, and a first mode that executes the first or second code. and a selection unit (included in the command output unit 222) that selects the second mode in which the second code is not executed.
  • Numerical controller 220 executes the machining program based on the selection made by the selection unit. The user selects a mode for actual machining, and the machine tool 210 executes the interference avoidance code (M998) in the machining program according to the selected mode.
  • the machine tool 210 may have a simulation unit, and in the simulation, selection of an interference avoidance mode (stopping the movement of the tool in a predetermined area or reducing the movement speed) may be performed.
  • FIG. 3 is a diagram for explaining the processing in the information processing device 200.
  • the original NC program 250 generated by the CAM 240 is configured such that the tool 301 and the tool mounting portion 302 move on the trajectory 303 from point 1 to point 5 via points 2 to 4 in the machining simulation.
  • movement from point 1 to point 2 is based on a positioning (G0) command
  • movement from point 2 through point 3 to point 4 is based on a cutting feed (G1) command
  • G1 cutting feed
  • movement from point 4 to point 5 is due to a positioning (G0) command.
  • the determination unit 202 sets boundary lines 305 and 306 at positions separated from the position (range) of the workpiece 304 by specified distances (here, 50 mm as an example) in the X, Y, and Z directions.
  • a designated distance area 307 is defined as the inside of the boundary line.
  • the same offset amount (distance) is set for each axis here, the present invention is not limited to this, and different offset amounts may be set for each axis. Also, different offset amounts may be set for each workpiece, jig, and cover.
  • the specified distance area 307 is defined by the "distance" from the work, jig, cover, etc., but the present invention is not limited to this. Any region may be used as long as it is determined based on the positions of the workpiece, jig, cover, etc., and has a shape that takes interference prevention into consideration.
  • a specified distance area 307 is an area within a predetermined distance from at least one of a workpiece, a jig, and a machine cover.
  • the designated distance area 307 is an area within a first distance in the X direction and within a second distance in the Z direction from at least one of the workpiece, jig, and machine cover.
  • the specified distance area 307 is drawn as a rectangular area in FIG. 3, the present invention is not limited to this, and is an area corresponding to the shape of the workpiece (material). Also, although the designated distance area 307 looks like a planar shape in FIG. 3, it actually has a three-dimensional shape.
  • a point at which the trajectory 303 enters the designated distance area 307 is defined as a division point 1
  • a point at which the trajectory 303 exits the designated distance area 307 is defined as a division point 2.
  • the coordinates of division points 1 and 2 are used to modify the original NC program 230 and generate an updated NC program 250 . That is, the NC program update unit 203 generates the NC program 250 so as to temporarily stop the tool or reduce the moving speed of the tool at the dividing point 1 .
  • control is performed so that the moving speed of the tool 301 from division point 1 to division point 2 is reduced.
  • the tool 301 may be stopped at division point 1 to prompt the operator to move manually.
  • M998 means interference check-on, which is a low-speed motor rotation start command
  • M999 means interference check-off, which is a low-speed rotation end command for the motor.
  • the NC program update unit 203 generates an NC machining program that starts decreasing the moving speed of the tool at the dividing point 1 and recovers from the decreasing moving speed of the tool at the dividing point 2 .
  • the machine tool 210 recognizes the embedded commands 251 and 252, and the machine tool 210 moves from the division point 1 to the division point 2 at low speed without any operation by the operator. , the tool 301 moves.
  • the operator can carefully check dimensions to see if they really collide at the timing when the tool, the object to be processed, or the jig (for example, a claw) that holds the object to be processed approaches.
  • the machine tool 210 may be provided with "prototype mode” and "mass production mode” and the commands 251 and 252 may be enabled only in the "prototype mode”. In other words, in the "mass production mode", the above M998 and M999 may be skipped.
  • the machine tool 210 may remove the workpiece and check for interference depending on the approaching object.
  • the first tool approach from tool replacement to the start of machining, and the time from the end of machining to the retraction of the tool to the standby position. movement may be checked at low speed.
  • FIG. 5 is a flowchart explaining the flow of processing in the information processing device 200.
  • FIG. 5 is a flowchart explaining the flow of processing in the information processing device 200.
  • the information processing device 200 acquires machine information, work information, jig information and tool information 270 from the CAM 240 in step S501.
  • step S502 a specified distance area is set around members that may interfere with each other, such as workpieces, jigs, and machine covers.
  • step S503 the coordinates of the first division point where the trajectory of the tool or the like enters the designated distance area and the coordinates of the second division point where it exits the designated distance area are calculated.
  • step S504 the moving speed of the tool on the trajectory from the first division point to the second division point is reduced during the machining simulation.
  • step S505 a predetermined command is inserted into the original NC program from the CAM so that the tool or the like moves at low speed from the first division point to the second division point, and an updated NC program is generated.
  • the machine tool 210 operates in the prototype mode according to the updated NC program, checks for interference, and then proceeds to actual machining.
  • the tool in the interference check on the machine tool, the tool automatically stops temporarily in an area where interference is likely to occur, or the moving speed is reduced. Interference can be checked without fail, and interference accidents can be prevented.
  • the present invention may be applied to a system composed of a plurality of devices, or may be applied to a single device. Furthermore, the present invention can also be applied when an information processing program that implements the functions of the embodiments is supplied to a system or apparatus and executed by a built-in processor.
  • the technical scope of the present invention includes a program installed in a computer, a medium storing the program, a server for downloading the program, and a processor executing the program. .
  • non-transitory computer readable media storing programs that cause a computer to perform at least the processing steps included in the above-described embodiments are included within the technical scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Geometry (AREA)
  • Numerical Control (AREA)

Abstract

Afin d'effectuer efficacement une vérification d'interférence dans un outil d'usinage, la présente invention concerne un dispositif de traitement d'informations comprenant : une unité de détermination qui, lors d'une simulation d'usinage avant l'usinage à l'aide de l'outil d'usinage, détermine, en tant que premier point de division, la position au niveau de laquelle un outil et/ou une partie fixation d'outil entre dans une zone prescrite autour d'une pièce à travailler, d'un gabarit et/ou d'un couvercle de machine ; et une unité de génération de programme d'usinage qui génère un programme d'usinage comprenant un code permettant d'interrompre temporairement l'outil au premier point de division ou un code permettant de réduire une vitesse de déplacement de l'outil au premier point de division.
PCT/JP2022/012308 2021-04-05 2022-03-17 Dispositif de traitement d'informations et programme de traitement d'informations WO2022215476A1 (fr)

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JP2021-064424 2021-04-05
JP2021064424A JP7175340B2 (ja) 2021-04-05 2021-04-05 工作機械、情報処理装置および情報処理プログラム

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0728520A (ja) * 1993-07-14 1995-01-31 Toyota Motor Corp ロボットの原点復帰制御方法
JPH09230918A (ja) * 1996-02-26 1997-09-05 Mitsubishi Electric Corp 数値制御装置
JP2003271215A (ja) * 2002-03-13 2003-09-26 Citizen Watch Co Ltd 数値制御工作機械の加工プログラムチェック方法およびチェック装置ならびにそれを備えた数値制御工作機械
JP2004326257A (ja) * 2003-04-22 2004-11-18 Mitsubishi Electric Corp シミュレーション装置
JP2006260104A (ja) * 2005-03-16 2006-09-28 Brother Ind Ltd 数値制御装置、数値制御方法、及び制御プログラム
JP2007128231A (ja) * 2005-11-02 2007-05-24 Fanuc Ltd 数値制御工作機械

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6099545A (ja) * 1983-11-02 1985-06-03 Mitsubishi Heavy Ind Ltd 工作機械
JPH02198742A (ja) * 1989-01-26 1990-08-07 Sodick Co Ltd Ｎｃ装置
JP6777516B2 (ja) * 2016-11-28 2020-10-28 ファナック株式会社 情報処理装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0728520A (ja) * 1993-07-14 1995-01-31 Toyota Motor Corp ロボットの原点復帰制御方法
JPH09230918A (ja) * 1996-02-26 1997-09-05 Mitsubishi Electric Corp 数値制御装置
JP2003271215A (ja) * 2002-03-13 2003-09-26 Citizen Watch Co Ltd 数値制御工作機械の加工プログラムチェック方法およびチェック装置ならびにそれを備えた数値制御工作機械
JP2004326257A (ja) * 2003-04-22 2004-11-18 Mitsubishi Electric Corp シミュレーション装置
JP2006260104A (ja) * 2005-03-16 2006-09-28 Brother Ind Ltd 数値制御装置、数値制御方法、及び制御プログラム
JP2007128231A (ja) * 2005-11-02 2007-05-24 Fanuc Ltd 数値制御工作機械

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JP7175340B2 (ja) 2022-11-18

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