WO2021235346A1 - 数値制御装置及び制御方法 - Google Patents

数値制御装置及び制御方法 Download PDF

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Publication number
WO2021235346A1
WO2021235346A1 PCT/JP2021/018411 JP2021018411W WO2021235346A1 WO 2021235346 A1 WO2021235346 A1 WO 2021235346A1 JP 2021018411 W JP2021018411 W JP 2021018411W WO 2021235346 A1 WO2021235346 A1 WO 2021235346A1
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WO
WIPO (PCT)
Prior art keywords
cutting tool
machining
machining program
tool
command
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/018411
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English (en)
French (fr)
Japanese (ja)
Inventor
大輔 上西
賢治 貝原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Corp filed Critical Fanuc Corp
Priority to CN202180035880.4A priority Critical patent/CN115666846A/zh
Priority to JP2022524436A priority patent/JP7401665B2/ja
Priority to DE112021002898.7T priority patent/DE112021002898T5/de
Priority to US17/997,796 priority patent/US12405591B2/en
Publication of WO2021235346A1 publication Critical patent/WO2021235346A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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—Program-control systems
    • G05B19/02—Program-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 program data in numerical form
    • G05B19/402—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 program data in numerical form characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position
    • 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—Program-control systems
    • G05B19/02—Program-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 program 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 program 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • 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—Program-control systems
    • G05B19/02—Program-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 program 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 program data in numerical form characterised by program execution, i.e. part program or machine function execution, e.g. selection of a program
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/35—Nc in input of data, input till input file format
    • G05B2219/35252—Function, machine codes G, M

Definitions

  • the present invention relates to a numerical control device and a control method.
  • a numerical control device that controls a machine tool or the like executes machining or the like of a workpiece by a machining program (see, for example, Patent Document 1).
  • the machining program processing apparatus described in Patent Document 1 calculates a correction reference point based on the command position of the tool tip point and the command angle of the tool attitude commanded by the machining program, and the dimensions of the tool, and calculates the correction reference point, and the tool tip point. Rewrite the command position of to the position of the correction reference point.
  • the numerical control device also uses a machining (control) program to machine the workpiece into a perfect circular shape.
  • a machining program to machine the workpiece into a perfect circular shape.
  • it is necessary to calculate the coordinate values considering the processing start position and end position, and although it is a calculation by a simple SIN / COS trigonometric function, it requires a calculator and the program is redundant. Therefore, it was difficult to manage and modify.
  • the numerical control device uses a machining program calculation unit that calculates a machining operation position as a command that the machine tool can operate from a one-line machining program and the operable command in order to give a command to the machine tool. It is provided with a perfect circle processing portion for processing the work into a perfect circle with a cutting tool centered on the starting point.
  • the control method of the numerical control device uses a step of calculating a machining operation position as a command that the machine tool can operate from a one-line machining program and a command that can operate the machine tool in order to give a command to the machine tool.
  • the machine tool is provided with a step of machining a work in a perfect circle with a cutting tool centered on a starting point.
  • FIG. 1 is a diagram showing the configuration of the processing system 1. As shown in FIG. 1, the machining system 1 includes a numerical control device 2 and a machine tool 3.
  • the numerical control device 2 is a device for causing the machine tool 3 to perform predetermined machining or the like by controlling the machine tool 3.
  • the numerical control device 2 includes a control unit 21.
  • the control unit 21 is a processor such as a CPU (Central Processing Unit), and functions as a perfect circle processing unit 211 and a processing program calculation unit 212 by executing a program stored in a storage unit (not shown).
  • CPU Central Processing Unit
  • the machine tool 3 is a device that performs predetermined machining such as cutting and measurement of tools based on the control of the numerical control device 2.
  • the machine tool 3 includes a motor that drives the work 32 to be machined, a spindle and a feed shaft attached to the motor, jigs and tools corresponding to each of these shafts, a table T for fixing the work 32, and the like. .. Then, the machine tool 3 performs predetermined machining by driving the motor based on the operation command output from the numerical control device 2. Specifically, the machine tool 3 includes a cutting tool 31.
  • the perfect circle processing unit 211 causes the machine tool 3 to process the work into a perfect circle centering on the starting point.
  • the machining program calculation unit 212 calculates the machining operation position as a command that the machine tool can operate from one line of the machining program in order to instruct the machine tool 3 to operate the perfect circle machining unit 211.
  • FIG. 2 is a diagram showing an outline of perfect circle machining by the machine tool 3.
  • the machine tool 3 processes the work 32 into a perfect circle with the cutting tool 31 using the following steps (1) to (4).
  • the cutting tool 31 is moved (approached) to the work 32.
  • the cutting tool 31 is inserted into the work 32.
  • the work 32 is cut by the cutting tool 31.
  • the cutting tool 31 is retracted from the work 32.
  • the cutting tool 31 is moved (approached) from the work 32.
  • the reference numeral O indicates a starting point
  • the reference numeral (argument) I indicates the radius of a perfect circle to be machined
  • the reference numeral (argument) A indicates the approach angle of the cutting tool 31, and the reference numeral (argument).
  • Argument) C indicates the angle of the starting point from the reference line.
  • reference numeral 33 in FIG. 2 indicates a machining locus by the cutting tool 31.
  • the reference numerals (arguments) X, Y and Z indicate the helical movement of the cutting tool 31 in the X, Y and Z directions, respectively, and mean the starting point on the designated plane.
  • the symbol (argument) Q indicates the pitch of the cutting tool 31 in the X, Y and Z-axis directions.
  • FIG. 3 is a diagram showing a specific example of a machining program.
  • G102 indicates the G code of the clockwise perfect circle cutting cycle
  • G103 indicates the G code of the counterclockwise perfect circle cutting cycle.
  • G41 indicates that the tool diameter of the cutting tool 31 is corrected to the left with respect to the cutting direction
  • G42 indicates that the tool diameter is corrected to the right with respect to the cutting direction.
  • G17 indicates that the XY plane is selected as the plane to be cut by the cutting tool 31
  • G18 indicates that the ZX plane is selected as the plane to be cut by the cutting tool 31
  • G19 indicates that it is selected.
  • G102 or G103 is selected when the machining program is created.
  • G41 and G42 are not selected when the machining program is created, or one of them is selected.
  • one of G17, G18 and G19 is selected when the machining program is created.
  • the argument I indicates the radius of the machining circle machined by the cutting tool 31
  • the argument F indicates the feed speed for cutting by the cutting tool 31.
  • the argument I is an essential parameter, and if the argument F is not commanded, the feed rate commanded immediately before is used as the argument F.
  • the argument G 1 indicates the tool diameter correction
  • the argument G 2 indicates the selection of the plane on which the cutting is performed by the cutting tool 31.
  • the argument C indicates the start position by an angle.
  • the argument R indicates the radius of the trajectory in which the cutting tool 31 enters and exits the work 32.
  • the argument A indicates the approach angle of the cutting tool 31, and the arguments X, Y and Z indicate the helical movement of the cutting tool 31 in the X, Y and Z directions, respectively, and mean the starting point on the specified plane. do.
  • the arguments X, Y and Z are set according to the above-mentioned G17 (specifying the XY plane), G18 (designating the XZ plane) and G19 (designating the YZ plane).
  • the argument Q is the pitch of the cutting tool 31 in the X, Y and Z-axis directions, and is the difference between the commanded numerical value in the axial direction and the position where the command is executed in the axial direction perpendicular to the designated plane. Indicates that continuous helical machining is performed for the number of times divided by the pitch.
  • the argument D indicates the tool diameter correction (number) of the cutting tool 31, and the argument E is the approach speed of the cutting tool 31, and indicates that the cutting tool 31 is executed as fast forward if there is no command.
  • the arguments other than the above-mentioned argument I are parameters that are arbitrarily set. For example, the argument A is 90 ° when there is no command, and the argument C is 0 ° when there is no command.
  • the numerical control device 2 has, in the machine tool 3, a perfect circle machining portion 211 for machining the work 32 into a perfect circle by a cutting tool 31 centering on a start point, and a perfect circle machining.
  • a machining program calculation unit 212 that calculates a machining operation position as a command that the machine tool 3 can operate is provided from a one-line machining program in order to command the operation of the unit 211 to the machine tool 3.
  • the numerical control device 2 calculates the machining operation position as a command that the machine tool 3 can operate from the machining program of one line in order to command the operation of the perfect circle machining unit 211 to the machine tool 3.
  • the numerical control device 2 can easily create a perfect circle cutting cycle based on the starting point, prevent the machining program from becoming redundant, and shorten the machining program creation time. ..
  • the machining program includes the G code, the radius of the perfect circle to be machined, the start position, the radius of the trajectory where the cutting tool enters and exits the workpiece, the approach angle of the cutting tool 31, and the helical of the cutting tool 31.
  • the numerical control device 2 can appropriately create a machining program for performing perfect circle machining.
  • the machining program calculation unit 212 includes tool diameter correction, selection of a plane on which cutting is performed by the cutting tool 31, a start position, a radius of a trajectory at which the cutting tool 31 enters and retracts into the work 32, and a helical movement amount. , Pitch, tool diameter correction number, feed speed and approach speed can be changed. This enables the numerical control device 2 to set each parameter of the machining program to an appropriate value.
  • the argument F is the feed speed commanded immediately before, and the argument R is.
  • the machining program may be machined under the specified conditions at any position on the commanded plane until the cancel code is read after the G code command as in the drilling fixed cycle operation. For example, if the cancel code is not commanded after the machining program command of one line, if a commanded arbitrary position (X-axis, Y-axis and Z-axis) on the commanded plane is commanded, the commanded arbitrary position is started. It is regarded as a point, and the work is machined in a perfect circle with a cutting tool centering on the starting point while keeping the conditions. This makes it possible to issue a plurality of perfect circle machining commands without repeatedly issuing argument commands.
  • step S1 the machining program calculation unit 212 reads the machining program from the storage unit (not shown).
  • step S2 the machining program calculation unit 212 selects a plane to be machined by any of the arguments G17, G18, or G19 in the machining program.
  • step S3 the machining program calculation unit 212 determines whether or not the positioning of the start point is commanded in the machining program. If the positioning of the start point is instructed (YES), the process proceeds to step S5. If the positioning of the start point is not commanded (NO), the process proceeds to step S4.
  • step S4 the machining program calculation unit 212 positions an arbitrary position on the plane selected in step S2 as a starting point.
  • step S5 the machining program calculation unit 212 determines whether or not the argument E (approach speed) is commanded in the machining program. If the argument E is instructed (YES), the process proceeds to step S6. If the argument E is not commanded (NO), the process proceeds to step S7.
  • step S6 the perfect circle processing unit 211 causes the cutting tool 31 to approach the work 32 by the command of the argument E.
  • the perfect circle processing unit 211 causes the cutting tool 31 to approach the work 32 in fast forward.
  • step S8 the machining program calculation unit 212 determines whether or not the arguments A (approach angle), R (approach radius) and C (start position) are commanded in the machining program. If the arguments A, R, and C are instructed (YES), the process proceeds to step S9. If the arguments A, R, and C are not commanded (NO), the process proceeds to step S10.
  • step S9 the perfect circle processing unit 211 causes the cutting tool 31 to enter the work 32 according to the commands of the arguments A, R, and C.
  • step S10 the perfect circle processing unit 211 causes the cutting tool 31 to enter the work 32 by, for example, a standard value in which the argument A is 90 °, the argument R is 1 / 2I, and C is 0 °.
  • step S11 the machining program calculation unit 212 determines whether or not the arguments X, Y and Z (helical movement amount) and the argument Q (pitch) are commanded in the machining program. If the arguments X, Y, Z and Q are commanded (YES), the process proceeds to step S13. If the arguments X, Y, Z and Q are not commanded (NO), the process proceeds to step S12.
  • step S12 the perfect circle machining portion 211 causes the work 32 to be rounded by the cutting tool 31 according to the machining program.
  • step S13 the perfect circle machining portion 211 causes the work 32 to be helically machined by the cutting tool 31 according to the machining program.
  • step S14 the machining program calculation unit 212 determines whether or not the arguments A (approach angle), R (approach radius) and C (start position) are commanded in the machining program. If the arguments A, R, and C are instructed (YES), the process proceeds to step S15. If the arguments A, R, and C are not commanded (NO), the process proceeds to step S16.
  • step S15 the perfect circle processing unit 211 retracts the cutting tool 31 to the work 32 according to the commands of the arguments A, R, and C.
  • step S16 the perfect circle processing unit 211 retracts the cutting tool 31 to the work 32 by, for example, a standard value in which the argument A is 90 °, the argument R is 1 / 2I, and C is 0 °.
  • step S17 the machining program calculation unit 212 determines whether or not the argument E (approach speed) is commanded in the machining program. If the argument E is instructed (YES), the process proceeds to step S18. If the argument E is not commanded (NO), the process proceeds to step S19.
  • step S18 the perfect circle processing unit 211 approaches the cutting tool 31 from the work 32 by the command of the argument E.
  • step S19 the perfect circle processing unit 211 approaches the cutting tool 31 from the work 32 by fast-forwarding.
  • the present invention is not limited to the above-described embodiments. Moreover, the effects described in the present embodiment are merely a list of the most preferable effects resulting from the present invention, and the effects according to the present invention are not limited to those described in the present embodiment.

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Numerical Control (AREA)
PCT/JP2021/018411 2020-05-21 2021-05-14 数値制御装置及び制御方法 Ceased WO2021235346A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202180035880.4A CN115666846A (zh) 2020-05-21 2021-05-14 数值控制装置以及控制方法
JP2022524436A JP7401665B2 (ja) 2020-05-21 2021-05-14 数値制御装置及び制御方法
DE112021002898.7T DE112021002898T5 (de) 2020-05-21 2021-05-14 Numerische Steuervorrichtung und Steuerverfahren
US17/997,796 US12405591B2 (en) 2020-05-21 2021-05-14 Numerical control device and control method

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JP2020088678 2020-05-21
JP2020-088678 2020-05-21

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WO (1) WO2021235346A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025120783A1 (ja) * 2023-12-06 2025-06-12 ファナック株式会社 プログラム編集装置、プログラム編集方法、およびコンピュータ読み取り可能な記憶媒体

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WO1994009420A1 (fr) * 1992-10-12 1994-04-28 Fanuc Ltd Appareil et procede de commande numerique
CN103116316A (zh) * 2013-01-06 2013-05-22 兰州交通大学 一种适应刀具类型或尺寸变化的数控加工控制方法
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JPH03206504A (ja) * 1990-07-30 1991-09-09 Fanuc Ltd 数値制御装置
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CN110543139A (zh) * 2018-05-28 2019-12-06 兰州荣翔轨道交通科技有限公司 一种扩展精加工数控加工控制方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025120783A1 (ja) * 2023-12-06 2025-06-12 ファナック株式会社 プログラム編集装置、プログラム編集方法、およびコンピュータ読み取り可能な記憶媒体

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DE112021002898T5 (de) 2023-03-02
JP7401665B2 (ja) 2023-12-19
CN115666846A (zh) 2023-01-31
US12405591B2 (en) 2025-09-02
JPWO2021235346A1 (https=) 2021-11-25
US20230350375A1 (en) 2023-11-02

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