WO2024062607A1 - 工作機械の制御装置 - Google Patents

工作機械の制御装置 Download PDF

Info

Publication number
WO2024062607A1
WO2024062607A1 PCT/JP2022/035419 JP2022035419W WO2024062607A1 WO 2024062607 A1 WO2024062607 A1 WO 2024062607A1 JP 2022035419 W JP2022035419 W JP 2022035419W WO 2024062607 A1 WO2024062607 A1 WO 2024062607A1
Authority
WO
WIPO (PCT)
Prior art keywords
surface roughness
tool
information
feed amount
workpiece
Prior art date
Application number
PCT/JP2022/035419
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
将司 安田
Original Assignee
ファナック株式会社
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 ファナック株式会社 filed Critical ファナック株式会社
Priority to PCT/JP2022/035419 priority Critical patent/WO2024062607A1/ja
Priority to CN202280100058.6A priority patent/CN119894636A/zh
Priority to DE112022007522.8T priority patent/DE112022007522T5/de
Priority to JP2024548041A priority patent/JPWO2024062607A1/ja
Publication of WO2024062607A1 publication Critical patent/WO2024062607A1/ja

Links

Images

Classifications

    • 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
    • B23Q15/013—Control or regulation of feed movement
    • 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
    • G05B19/416—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 control of velocity, acceleration or deceleration
    • G05B19/4163—Adaptive control of feed or cutting velocity
    • 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
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49084—Control roughness of surface

Definitions

  • the present disclosure relates to a control device for a machine tool.
  • surface roughness is one of the indicators of a workpiece after machining.
  • Surface roughness is determined by the shape of the cutting tool's cutting edge and the feed rate. Therefore, the amount of feed of the spindle per unit time has been determined so that the workpiece after machining can obtain the desired surface roughness.
  • the feed rate needs to be changed, but if the feed rate remains unchanged. Cutting continues. Unless the feed rate corresponds to appropriate conditions, there is a possibility that the desired surface roughness cannot be obtained.
  • the present disclosure has been made in view of the above problems, and even if the cutting tool is changed after the start of machining or the shape of the cutting tool's cutting edge changes, the desired surface roughness can be obtained with high accuracy, and
  • the purpose of this invention is to provide a technology that can improve the readability of machining programs and reduce the effort required to create machining programs.
  • the present disclosure relates to a control device for a machine tool that processes a cutting tool and a workpiece while relatively moving the workpiece, the surface roughness control device acquiring a target surface roughness set for the workpiece to be machined from a machining program.
  • an acquisition unit a tool surface roughness information acquisition unit that acquires tool surface roughness information regarding the surface roughness of the cutting tool; and a tool surface roughness information acquisition unit that acquires tool surface roughness information regarding the surface roughness of the cutting tool;
  • the present invention is a control device for a machine tool, comprising: a feed rate control unit that determines feed rate information regarding a relative feed rate per rotation of the cutting tool and the workpiece based on degree information.
  • the desired surface roughness can be obtained with high precision, and the readability of the machining program can be improved. It is possible to provide technology that can reduce the effort required to create machining programs.
  • FIG. 1 is a functional block diagram of a control device for a machine tool according to a first embodiment.
  • FIG. It is a schematic diagram which shows the example of the cutting process in which the target surface roughness was set.
  • FIG. 3 is a diagram showing an example of a machining program. It is a figure which shows the example of the table of tool surface roughness information.
  • FIG. 11 is a functional block diagram of a control device for a machine tool according to a second embodiment.
  • FIG. 13 is a diagram for explaining swing cutting.
  • FIG. 3 is a functional block diagram of a control device for a machine tool according to a third embodiment.
  • FIG. 13 is a functional block diagram of a control device for a machine tool according to a fourth embodiment.
  • FIG. 13 is a functional block diagram of a control device for a machine tool according to a fifth embodiment. It is a functional block diagram of a control device of a machine tool concerning a 6th embodiment.
  • FIG. 1 is a functional block diagram of a control device 1 for a machine tool according to the first embodiment.
  • the control device 1 controls a machine tool that processes a cutting tool T and a workpiece while moving the workpiece relatively.
  • the control device 1 operates at least one main axis that rotates the cutting tool T and the workpiece relatively, and at least one feed axis that moves the cutting tool T relatively to the workpiece, so that the tool moves the workpiece. It is used for cutting.
  • the shape of the workpiece is not limited. In other words, even if the workpiece has a tapered part or an arcuate part on the machined surface and requires multiple feed axes (Z-axis and X-axis), if the workpiece is columnar or cylindrical and the feed axis is (Z-axis) is also applicable.
  • the machine tool control device 1 includes a first memory unit 10, a surface roughness acquisition unit 11, a second memory unit 20, a tool surface roughness information acquisition unit 12, and a feed amount control unit 14.
  • the machine tool control device 1 is configured using a computer including memories such as a ROM (read only memory) and a RAM (random access memory), a CPU (control processing unit), and a communication control unit, which are connected to each other via a bus, for example.
  • the functions and operations of each of the above functional units are achieved by the cooperation of the CPU and memory mounted on the computer, and the control program stored in the memory.
  • the machine tool control device 1 may be configured with a CNC (Computer Numerical Controller), and may be connected to a host computer (not shown) such as a CNC or a PLC (Programmable Logic Controller). In addition to the machining program, machining conditions such as rotational speed are input from the host computer to the control device 1 of the machine tool.
  • a CNC Computer Numerical Controller
  • PLC Programmable Logic Controller
  • the first storage unit 10 stores a machining program to be executed by the machine tool.
  • the machining program includes machining conditions for the workpiece.
  • the machining conditions for the workpiece include the relative rotational speed of the workpiece and the cutting tool T around the center axis of the workpiece, the relative feed speed of the cutting tool T and the workpiece, the position command of the feed axis, the target surface roughness, etc. is included.
  • the target surface roughness is a desired surface roughness value set for the workpiece to be machined.
  • surface roughness include arithmetic mean roughness, maximum height that is the maximum distance between peaks and valleys, maximum peak height that is the maximum height from the average line of the surface, and height from the average line of the surface.
  • Maximum valley depth which is the absolute value of the minimum height
  • average height which is the average value of the heights of contour curve elements that are a set of adjacent peaks and valleys, and the height of the peaks of the contour curve elements mentioned above.
  • the maximum cross-sectional height which is the sum of the maximum value and the maximum value of the valley depth, and the ratio of the loaded length of the contour curve element to the evaluation reference length at a predetermined cutting level (height% or ⁇ m). At least one of the load length ratios is included.
  • typical indexes of surface roughness have been listed, the present invention is not limited to these, and other indexes of surface roughness may be used.
  • the surface roughness acquisition unit 11 acquires the target surface roughness that is the target surface roughness from the machining program.
  • the surface roughness acquisition unit 11 acquires the target surface roughness set in the machining program via the first storage unit 10 and outputs the acquired target surface roughness to the feed amount control unit 14. do.
  • the second memory unit 20 stores tool surface roughness information related to the surface roughness of the cutting tool T.
  • Tool surface roughness information related to the surface roughness of the cutting tool T includes information specifying the shape of the cutting tool T (tool shape information).
  • the tool shape information is, for example, information indicating the shape of the cutting edge, such as nose R (mm) indicating the diameter of the cutting edge of the cutting tool T.
  • the second memory unit 20 acquires and stores information specifying the shape of the cutting tool T from the machining program.
  • the tool surface roughness information related to the surface roughness of the cutting tool T may be, for example, information representing the relationship between the feed rate and the surface roughness obtained when machining at that feed rate (for example, table data, relational expressions, etc.). good.
  • the tool surface roughness information related to the surface roughness of the cutting tool T may be the information itself related to the surface roughness of the cutting tool T, or may be indirect information such as a tool number for specifying tool shape information. It may also be information.
  • the second storage unit 20 stores the values of the nose R (mm) corresponding to each tool number as indirect information in a table format, and stores the values of the nose R (mm) corresponding to each tool number as indirect information, and A method may be used in which the cutting tool T in use is identified by identifying the tool number.
  • the second storage unit 20 stores information indicating tool surface roughness information related to the current surface roughness of the cutting tool T, which is obtained from the cutting tool T connected to the control device 1.
  • the second storage unit 20 stores the surface roughness of the cutting tool T after machining due to replacement of the cutting tool T, wear, etc. Changes in tool surface roughness information related to tool surface roughness will also be reflected.
  • the information indicating the tool surface roughness information related to the current surface roughness of the cutting tool T obtained from the cutting tool T may be the information itself related to the surface roughness of the tool, or may be information such as the tool number etc. It may be indirect information.
  • Detection of a change in tool surface roughness information related to the surface roughness of the cutting tool T is performed, for example, by detecting a change in the tool surface roughness information related to the surface roughness of the cutting tool T based on an external signal indicating that a new cutting tool T has been replaced.
  • Information specifying roughness information may be included.
  • changes in tool surface roughness information related to the surface roughness of the cutting tool T may be detected by, for example, image processing of an imaging device, or a contact or non-contact sensor may be used to detect changes in the shape of the cutting edge. It may also be detected by measuring.
  • the tool surface roughness information acquisition unit 12 acquires tool surface roughness information of the cutting tool T from the second storage unit 20.
  • the tool surface roughness information acquisition unit 12 may acquire the tool surface roughness information stored in the second storage unit 20, or specify the cutting tool T stored in the second storage unit 20. Alternatively, the tool surface roughness information may be specified from the information obtained.
  • the tool surface roughness information acquisition section 12 outputs the acquired tool surface roughness information to the feed rate control section 14 .
  • the feed amount control unit 14 determines feed amount information regarding the relative feed amount per revolution between the cutting tool T and the workpiece, and controls the drive of the motor 3.
  • the feed rate control unit 14 calculates feed rate information based on the target surface roughness input from the surface roughness acquisition unit 11 and the tool surface roughness information input from the tool surface roughness information acquisition unit 12. .
  • the feed amount information is information regarding the relative feed amount per rotation between the cutting tool T and the workpiece.
  • the information regarding the feed amount is, for example, the feed amount F (mm/rev) per rotation of the main shaft. Further, the information regarding the feed amount may be the spindle rotation speed (rev/min) and the feed amount (mm/min). Therefore, the feed amount control section 14 may control both the feed shaft motor and the main shaft motor.
  • the input unit 15 inputs information related to processing in response to an operator's input operation on an input means (not shown), such as a keyboard or a touch panel.
  • the information related to processing input by the input unit 15 is stored in the first storage unit 10, etc., or input to each part of the control device 1.
  • the display unit 16 displays various information regarding the machine tool, the control device 1, and machining.
  • FIG. 2 is a schematic diagram showing an example of cutting processing in which a target surface roughness is set.
  • "Rz: 3.0" is set in advance as the target roughness in the machining program.
  • FIG. 3 is a diagram showing an example of a machining program.
  • the block "S2000 M03" is a description indicating that the main shaft is rotated in the normal direction.
  • the block “T05” is a description indicating a tool number, which is information for specifying tool surface roughness information.
  • Blocks starting with “G00” or “G01” such as “G00 Z40.0 X20.0” are descriptions that indicate behavior and coordinates such as positioning and linear interpolation.
  • “Rz3.0” in the block “G01 Z20.0 Rz3.0” is a description indicating the target surface roughness.
  • FIG. 4 is a diagram showing an example of a table of tool surface roughness information.
  • the information is stored in the second storage unit 20, and at least information on the tool numbers T01 to T06 and the nose R corresponding to each of the tool numbers T01 to T06 is stored in a table format.
  • the tool surface roughness information acquisition unit 12 acquires tool surface roughness information based on the tool number described in the machining program and a table as shown in FIG. In this example, nose R0.4 (mm) corresponding to tool number "T05" included in the machining program is acquired as tool surface roughness information.
  • the method for acquiring tool surface roughness information is not particularly limited.
  • the tool surface roughness information acquisition section 12 may, for example, acquire the tool surface roughness information by referring to the tool number and table stored in the second storage section 20, or may obtain the tool surface roughness information in advance based on the tool number and table.
  • the identified tool surface roughness information may be acquired from the second storage unit 20.
  • the feed rate control unit 14 determines the feed rate based on the target surface roughness acquired by the surface roughness acquisition unit 11 and the tool surface roughness information acquired by the tool surface roughness information acquisition unit 12.
  • h is the target surface roughness Rz ( ⁇ m)
  • f is the feed rate per spindle rotation (mm/rev)
  • RE is the 7-nose R (mm) indicating the shape of the cutting edge of the cutting tool T, represents.
  • the feed amount control unit 14 controls the motor 3 according to the feed amount based on the target surface roughness of the machining program until the target surface roughness is updated.
  • the motor 3 is controlled by the feed rate calculated based on the new updated target surface roughness.
  • the tool surface roughness information acquisition unit 12 monitors the state of the surface roughness of the cutting tool T. For this purpose, for example, it is monitored whether the cutting tool T has been replaced. When the replacement of the cutting tool T is detected, the tool surface roughness information acquisition unit 12 recalculates the feed amount information based on the surface roughness information of the replaced cutting tool T and the target surface roughness.
  • the shape of the blade of the cutting tool T is monitored.
  • the tool surface roughness information acquisition unit 12 acquires feed amount information based on the tool shape information indicating the changed shape of the blade of the cutting tool T and the target surface roughness. Recalculate.
  • the control device 1 for a machine tool that performs machining while moving a cutting tool T and a workpiece W relative to one another provides the following effects.
  • the machine tool control device 1 includes a surface roughness acquisition unit 11 that acquires the target surface roughness set for the workpiece W to be machined from the machining program, and A tool surface roughness information acquisition unit 12 that acquires related tool surface roughness information, and a cutting tool T and workpiece W based on the tool surface roughness information so that the surface roughness of the workpiece W becomes the target surface roughness. and a feed amount control unit 14 that determines feed amount information regarding the relative feed amount per revolution of the feed amount.
  • the target surface roughness is set in the machining program, so the feed rate can be controlled based on the target surface roughness, the readability of the machining program can be improved, and the creation of the machining program is reduced. can be reduced.
  • the feed amount information will be updated based on the target surface roughness and the surface roughness information of the cutting tool T. Since the calculation can be performed anew, the desired surface roughness can be obtained with high accuracy.
  • the tool surface roughness information acquisition unit 12 detects a change in the tool surface roughness information of the cutting tool T
  • the tool surface roughness information acquisition unit 12 acquires the tool surface roughness information after the change, and the feed rate control unit 14 , re-determine the feed rate information by reflecting the changed tool surface roughness information.
  • the surface roughness acquisition unit 11 continues to use the target surface roughness previously acquired from the machining program until the next target surface roughness is acquired from the machining program, and the feed rate control unit 14 Output to.
  • the target surface roughness command becomes modal information, making machining programming easier.
  • FIG. 5 is a functional block diagram of a machine tool control device 1A according to the second embodiment.
  • the control device 1A according to the second embodiment controls a machine tool that performs swing cutting while swinging a cutting tool T and a workpiece relative to each other.
  • the machine tool control device 1A according to the second embodiment is different from the machine tool control device 1 according to the first embodiment in that it further includes a third storage unit 30 and a swing condition acquisition unit 13, and in the control of a feed amount control unit 14A, but the other configurations are the same as those of the first embodiment.
  • FIG. 6 is a diagram for explaining swing cutting.
  • at least one main axis S rotates the cutting tool T and the workpiece W relative to each other, and at least one feed axis moves the cutting tool T relative to the workpiece W. are operated to relatively rotate the cutting tool T and workpiece W, and perform cutting while relatively swinging the cutting tool T and workpiece W in the feeding direction.
  • the tool path which is the locus of the cutting tool T, is set so that the current path partially overlaps the previous path. In other words, the part that was machined in the previous path is partially included in the current path, causing a miss called air cut in which the cutting edge of the cutting tool T separates from the surface of the workpiece W, and the chips are shredded.
  • the third memory unit 30 stores the oscillation conditions for performing the oscillation cutting process.
  • the oscillation conditions are obtained, for example, from the machining program.
  • the oscillation conditions include information on the relative oscillation number per rotation between the cutting tool and the workpiece W, and information on the oscillation amplitude with respect to the relative feed amount per rotation between the cutting tool and the workpiece W.
  • the information on the relative oscillation number per rotation between the cutting tool and the workpiece W includes an oscillation frequency magnification I (times) indicating the oscillation frequency per rotation of the spindle.
  • the information on the oscillation amplitude with respect to the relative feed amount per rotation between the cutting tool and the workpiece W includes an oscillation amplitude magnification K (times) indicating the magnitude of the oscillation amplitude with respect to the magnitude of the feed amount per rotation of the spindle.
  • the oscillation frequency magnification I (times) may be specified directly, or may be calculated from the oscillation frequency (Hz) and the spindle rotation speed S (1/min) after specifying the oscillation frequency (Hz).
  • the oscillation amplitude magnification K (times) may be specified directly, or may be calculated from the oscillation amplitude (mm), feed rate (mm/min), and spindle rotation speed S (1/min) after specifying the oscillation amplitude (mm).
  • the swing condition acquisition unit 13 acquires the swing conditions and outputs them to the feed amount control unit 14A.
  • the swing condition acquisition unit 13 obtains the swing conditions from the third storage unit 30. Further, the swing condition acquisition unit 13 can obtain swing conditions specified by an external signal or the like.
  • the swing condition acquisition section 13 outputs the obtained swing conditions to the feed amount control section 14A.
  • the feed rate control unit 14A of the second embodiment acquires the target surface roughness input from the surface roughness acquisition unit 11, the tool surface roughness information input from the tool surface roughness information acquisition unit 12, and the swing condition acquisition.
  • the feed amount information is calculated based on the swing conditions input from the section 13.
  • the motor 3 is controlled based on the feed rate information calculated by the feed rate control section 14A, and swing cutting is performed.
  • the updated swing conditions are stored in the third storage unit 30.
  • the swing condition acquisition unit 13 monitors whether the swing conditions have changed. The swing conditions change, for example, when the swing conditions of a machining program are changed, or when the swing conditions are changed due to an external signal. When a change in the swing condition is detected, the swing condition acquisition unit 13 recalculates the feed amount information based on the changed swing condition, tool surface roughness information, and target surface roughness.
  • the machine tool control device 1A includes a surface roughness acquisition section 11, a tool surface roughness information acquisition section 12, and an oscillation cutting operation that relatively oscillates a cutting tool T and a workpiece W.
  • the feed amount controller 14A further includes a swing condition acquisition unit 13 that obtains conditions, and the feed rate control unit 14A controls the feed amount based on the tool surface roughness information and the swing conditions so that the surface roughness of the workpiece W becomes the target surface roughness. Determine quantity information.
  • the control device 1 of the first embodiment even if the swing conditions change after the start of machining, in addition to the target surface roughness and the tool surface roughness information of the cutting edge of the cutting tool T, the changed swing Since the feed rate information is recalculated based on the conditions, the desired surface roughness can be obtained with high precision even in swing cutting. Further, it is possible to reduce the effort required to determine the feed rate in consideration of the swing conditions.
  • the swing condition acquisition unit 13 of this embodiment detects a change in the swing condition, it acquires the swing condition after the change, and the feed amount control unit 14A reflects the swing condition after the change. Redetermine feed amount information. Thereby, changes in the swing conditions after the start of machining can be quickly reflected in the feed amount information.
  • FIG. 7 is a functional block diagram of a machine tool control device 1B according to the third embodiment.
  • the control device 1B according to the third embodiment controls a machine tool that performs cutting while relatively moving the cutting tool T and the workpiece.
  • the machine tool control device 1B according to the third embodiment is different from the machine tool control device 1 according to the first embodiment in that it further includes a designated feed amount acquisition unit 17.
  • the control of the feed amount control section 14B is different, and the other configurations are the same as in the first embodiment.
  • the designated feed amount acquisition unit 17 acquires designated feed amount information in which information regarding the relative feed amount per revolution between the cutting tool T and the workpiece W is specified.
  • the designated feed amount information is a numerical value set in advance, and is a numerical value in the same unit as the feed amount information.
  • the designated feed amount information is set by being written in the machining program or input from the input unit 15.
  • the designated feed amount acquisition unit 17 acquires the designated feed amount.
  • the designated feed amount acquisition unit 17 acquires the designated feed amount information, it outputs the specified feed amount information to the feed amount control unit 14B.
  • the feed rate control unit 14B of the third embodiment uses the specified feed rate information instead of the specified feed rate information calculated based on the target surface roughness and tool surface roughness information. Prioritize feed amount information. Therefore, the motor 3 is controlled based on the designated feed amount information.
  • the machine tool control device 1B When the machine tool control device 1B according to the present embodiment acquires designated feed amount information in which information regarding the relative feed amount per revolution between the cutting tool T and the workpiece W is specified, the machine tool control device 1B performs a to control the relative feed amount per revolution between the cutting tool T and the work W. This makes it possible to respond flexibly to cases where it is better to specify the feed rate, such as when there are unprocessed blocks.
  • the designated feed amount acquisition unit 17 of the third embodiment may be added to the configuration of the second embodiment that performs swing cutting.
  • the feed amount control unit 14B acquires the specified feed amount information, it controls the motor 3 with priority given to the specified feed amount information.
  • FIG. 8 is a functional block diagram of a machine tool control device 1C according to the fourth embodiment.
  • the machine tool control device 1C according to the fourth embodiment is different from the machine tool control device 1 according to the first embodiment in that it further includes a deviation correction value acquisition unit 18. The difference is in the control of the feed amount control section 14C, and the other configurations are the same as in the first embodiment.
  • the deviation correction value acquisition unit 18 obtains a deviation correction value that corrects the deviation between the theoretical value and the measured value of surface roughness.
  • the deviation correction value is calculated based on, for example, the processing conditions acquired from the first storage unit 10.
  • the machining conditions are calculated based on machining conditions including at least one of the material of the cutting tool edge, the shape of the cutting tool edge, the material of the workpiece W, the cutting speed, the depth of cut, and the angle of cut. Further, the deviation correction value may be calculated based on machine parameters as necessary.
  • the deviation correction value acquisition unit 18 outputs the obtained deviation correction value to the feed amount control unit 14C.
  • the feed rate control unit 14C of the fourth embodiment acquires the target surface roughness input from the surface roughness acquisition unit 11, the tool surface roughness information input from the tool surface roughness information acquisition unit 12, and the deviation correction value.
  • the feed amount information is calculated based on the deviation correction value obtained from the section 18.
  • the motor 3 is controlled based on the feed rate information calculated by the feed rate control section 14C, and cutting is performed.
  • the deviation correction value acquisition unit 18 may also use machine learning such as supervised learning.
  • a learning model may be constructed from a large amount of data set that uses feed amount information related to the processing conditions and feed amount as input and outputs the actual surface roughness, and the deviation correction value may be determined based on the surface roughness that is the output result of the learning model.
  • the machine tool control device 1C includes a deviation correction value acquisition unit 18 that obtains a deviation correction value for correcting the deviation between the theoretical surface roughness value and the actual measured value of the surface roughness of the workpiece W. Furthermore, the feed amount control unit 14C determines the feed amount information by taking the deviation correction value into consideration. As a result, the feed amount information is determined taking into account the difference between the theoretical value of surface roughness and the actual value of surface roughness, so that processing can be performed with even higher precision to achieve the desired surface roughness.
  • the deviation correction value acquisition unit 18 of the fourth embodiment may be added to the configuration of the second embodiment that performs swing cutting. In this case, it is preferable that the deviation correction value acquisition unit 18 determines the feed amount information by taking into account the swing conditions in addition to the processing conditions. When combining machine learning, it is preferable to add a swing condition to the input of the data set.
  • FIG. 9 is a functional block diagram of a control device 1D for a machine tool according to the fifth embodiment.
  • the machine tool control device 1D according to the fifth embodiment has a surface roughness correction value acquisition unit 21 and a surface roughness
  • the second embodiment differs in that it further includes a length determination section 22 and in the control of a feed amount control section 14D, and the other configurations are the same as in the first embodiment.
  • the surface roughness correction value acquisition unit 21 acquires a surface roughness correction value for correcting the target surface roughness.
  • the surface roughness correction value acquisition unit 21 is, for example, a magnification (correction coefficient) specified by an operator operating an input means such as a dial of the input unit 15 or by operating an external computer. The operator can adjust the surface roughness by setting the target surface roughness as 100% of the standard and changing it to 90%, 110%, etc.
  • the surface roughness determination unit 22 corrects the target surface roughness input from the surface roughness acquisition unit 11 using the surface roughness correction value input from the surface roughness correction value acquisition unit 21, and Output to 14.
  • the feed rate control unit 14D of the fifth embodiment uses the corrected target surface roughness inputted from the surface roughness determination unit 22 and the tool surface roughness information inputted from the tool surface roughness information acquisition unit 12. Calculate feed amount information based on this.
  • the motor 3 is controlled based on the feed amount information calculated by the feed amount control section 14D, and cutting is performed.
  • the machine tool control device 1D according to the fifth embodiment provides the following advantages:
  • the machine tool control device 1D includes a surface roughness correction value acquisition unit 21 that acquires a surface roughness correction value for correcting the target surface roughness, and a target surface roughness acquired by the surface roughness acquisition unit 11. and a surface roughness determination unit 22 that determines the surface roughness based on the surface roughness correction value acquired by the surface roughness correction value acquisition unit 21.
  • the feed amount information is determined so that the surface roughness determined by the surface roughness determining section 22 is obtained. This allows the operator to adjust the accuracy of the surface roughness after machining without changing the machining program.
  • the surface roughness correction value acquisition unit 21 and the surface roughness determination unit 22 of the fifth embodiment may be added to the configuration of other embodiments such as the second embodiment that performs swing cutting.
  • FIG. 10 is a functional block diagram of a machine tool control device 1E according to the sixth embodiment. As shown in FIG. 10, the machine tool control device 1E according to the sixth embodiment differs from the machine tool control device 1 according to the first embodiment in that it further includes an output processing section 23. However, other configurations are the same as in the first embodiment.
  • the output processing unit 23 executes display processing for outputting the feed amount information determined by the feed amount control unit 14 to the display unit 16.
  • the display unit 16 displays the feed amount information processed by the output processing unit 23 on the screen.
  • the display unit 16 displays, for example, the feed amount F (mm/rev) per spindle rotation, the spindle rotation speed (rev/min), the feed amount (mm/min), etc. on the screen as feed amount information. do.
  • the machine tool control device 1E further includes an output processing section 23 that outputs the feed amount information determined by the feed amount control section 14 to the display section 16. Thereby, the operator can check the feed amount information displayed on the display screen of the display unit 16, etc., and therefore can easily check safety and production plans.
  • output processing unit 23 of the sixth embodiment may be added to the configuration of other embodiments, such as the second embodiment that performs swing cutting.
  • Machine tool control device 11
  • Surface roughness acquisition section 12 Tool surface roughness information acquisition section 13
  • Feed rate control section 16 Display section 17
  • Deviation correction value acquisition section 21 Surface roughness correction value acquisition section 22
  • Surface roughness determination section 23 Output processing section

Landscapes

  • 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/JP2022/035419 2022-09-22 2022-09-22 工作機械の制御装置 WO2024062607A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2022/035419 WO2024062607A1 (ja) 2022-09-22 2022-09-22 工作機械の制御装置
CN202280100058.6A CN119894636A (zh) 2022-09-22 2022-09-22 机床的控制装置
DE112022007522.8T DE112022007522T5 (de) 2022-09-22 2022-09-22 Werkzeugmaschinen-Steuereinrichtung
JP2024548041A JPWO2024062607A1 (enrdf_load_stackoverflow) 2022-09-22 2022-09-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/035419 WO2024062607A1 (ja) 2022-09-22 2022-09-22 工作機械の制御装置

Publications (1)

Publication Number Publication Date
WO2024062607A1 true WO2024062607A1 (ja) 2024-03-28

Family

ID=90454069

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/035419 WO2024062607A1 (ja) 2022-09-22 2022-09-22 工作機械の制御装置

Country Status (4)

Country Link
JP (1) JPWO2024062607A1 (enrdf_load_stackoverflow)
CN (1) CN119894636A (enrdf_load_stackoverflow)
DE (1) DE112022007522T5 (enrdf_load_stackoverflow)
WO (1) WO2024062607A1 (enrdf_load_stackoverflow)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58126039A (ja) * 1982-01-20 1983-07-27 Mitsubishi Electric Corp 数値制御加工機械の仕上面粗度設定方式
JP2003323204A (ja) * 2002-04-30 2003-11-14 Okuma Corp ボールエンドミル工具を用いた加工方法
JP2008183706A (ja) * 2003-01-31 2008-08-14 Fujitsu Ltd 加工制御装置、工具決定方法および工具決定プログラム
JP2015074078A (ja) * 2013-10-11 2015-04-20 大同特殊鋼株式会社 切削条件設定方法及びそれを実行させるプログラム
WO2022163634A1 (ja) * 2021-01-28 2022-08-04 ファナック株式会社 表示装置及びコンピュータプログラム
WO2022181594A1 (ja) * 2021-02-26 2022-09-01 ファナック株式会社 計算装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58126039A (ja) * 1982-01-20 1983-07-27 Mitsubishi Electric Corp 数値制御加工機械の仕上面粗度設定方式
JP2003323204A (ja) * 2002-04-30 2003-11-14 Okuma Corp ボールエンドミル工具を用いた加工方法
JP2008183706A (ja) * 2003-01-31 2008-08-14 Fujitsu Ltd 加工制御装置、工具決定方法および工具決定プログラム
JP2015074078A (ja) * 2013-10-11 2015-04-20 大同特殊鋼株式会社 切削条件設定方法及びそれを実行させるプログラム
WO2022163634A1 (ja) * 2021-01-28 2022-08-04 ファナック株式会社 表示装置及びコンピュータプログラム
WO2022181594A1 (ja) * 2021-02-26 2022-09-01 ファナック株式会社 計算装置

Also Published As

Publication number Publication date
CN119894636A (zh) 2025-04-25
DE112022007522T5 (de) 2025-05-15
JPWO2024062607A1 (enrdf_load_stackoverflow) 2024-03-28

Similar Documents

Publication Publication Date Title
EP1758004A2 (en) NC Machine Tool
JP6740199B2 (ja) 数値制御装置、ｃｎｃ工作機械、数値制御方法及び数値制御用プログラム
JP5670501B2 (ja) 切削条件表示装置
US20190266296A1 (en) Machining simulation device of machine tool
JP7252426B1 (ja) 工作機械の制御装置及び工作機械の表示装置
JP5420123B1 (ja) 数値制御装置
KR20190013344A (ko) 가공좌표계상 가공시간에 따라 가공위치와 물리적 가공절삭 특성값을 매핑하는 절삭특성맵을 활용하여 절삭상태를 지능적으로 감시 및 진단하고, 절삭조건을 제어할 수 있는 지능형 cnc공작기계 제어시스템
JP7473321B2 (ja) シミュレーション装置、数値制御装置、及びシミュレーション方法
CN111618661A (zh) 信息处理装置及信息处理方法
JP6854658B2 (ja) 加工装置及び加工方法
JP4639058B2 (ja) ねじ切り加工装置
WO2024062607A1 (ja) 工作機械の制御装置
JP2019219878A (ja) 数値制御装置及び誤入力検出方法
JP2012056030A (ja) 工作機械
WO2024062544A1 (ja) 工作機械の表示装置
JP7184588B2 (ja) 数値制御装置
WO2023218649A1 (ja) 工作機械の制御装置
WO2024154314A1 (ja) 工作機械の制御装置
WO2024232100A1 (ja) 工作機械の表示装置、工作機械の制御装置及びプログラム
WO2023218648A1 (ja) 工作機械の制御装置
JP2022018836A (ja) 切削加工支援システム
WO2024232104A1 (ja) 工作機械の表示装置及びプログラム
WO2024232103A1 (ja) 工作機械の表示装置
WO2024180769A1 (ja) シミュレーション装置およびコンピュータ読み取り可能な記憶媒体
CN119855678A (zh) 机床的控制装置以及机床的显示装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22959571

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2024548041

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 112022007522

Country of ref document: DE

WWP Wipo information: published in national office

Ref document number: 112022007522

Country of ref document: DE