WO2013118179A1 - Procédé et appareil d'affichage de la trajectoire d'un outil - Google Patents

Procédé et appareil d'affichage de la trajectoire d'un outil Download PDF

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Publication number
WO2013118179A1
WO2013118179A1 PCT/JP2012/000863 JP2012000863W WO2013118179A1 WO 2013118179 A1 WO2013118179 A1 WO 2013118179A1 JP 2012000863 W JP2012000863 W JP 2012000863W WO 2013118179 A1 WO2013118179 A1 WO 2013118179A1
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WO
WIPO (PCT)
Prior art keywords
tool
display
workpiece
tool path
machining
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Application number
PCT/JP2012/000863
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English (en)
Japanese (ja)
Inventor
宮田　亮
俊博 東
宣行 高橋
米田　高志
Original Assignee
三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2012/000863 priority Critical patent/WO2013118179A1/fr
Publication of WO2013118179A1 publication Critical patent/WO2013118179A1/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
    • G05B19/406—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

Definitions

  • the present invention relates to a tool path display method and apparatus in machining using an NC machine tool.
  • Patent Documents 1 and 2 A method for solving this has been proposed so far, and disclosed in, for example, Patent Documents 1 and 2.
  • the method of Patent Document 1 paying attention to the fact that the tool trajectory to be displayed becomes relatively sparse due to the enlarged display, a plurality of partial machining areas to be enlarged are set in advance, and the tool movement position is set.
  • verification processing is supported by automatically switching and displaying an enlarged portion of the partial machining area.
  • the display attribute such as a display color, is changed according to the feature-value regarding a tool movement, and a tool locus
  • Japanese Patent Laid-Open No. 9-120308 page 2-4, FIG. 2
  • Japanese Patent No. 3878516 page 4-5, Fig. 2
  • the present invention has been made in view of such problems, and is easy to verify even for a large-scale machining program, and relates to various parts of a workpiece at any stage of the machining program. It is an object of the present invention to obtain a tool path display method and a tool path display device that can confirm a machining operation in various forms.
  • the shape of a workpiece to be machined and the shape of a tool used for machining are expressed by a three-dimensional model, and machining of the workpiece by moving a tool is simulated by shape processing on the three-dimensional model.
  • the created machining surface is associated with the tool trajectory involved in creation and the logical value indicating whether or not the machining surface is displayed on the display screen, and the projected figure of the three-dimensional model of the workpiece is graphically displayed on the display screen.
  • the tool trajectory corresponding to the machining surface of the workpiece shape displayed on the display screen is determined as a display target, and the projection figure is superimposed on the projection figure of the three-dimensional model of the workpiece and displayed on the display screen as a graphic. Is.
  • the tool path to be confirmed can be easily identified without being confused by an irrelevant tool path.
  • the machining program can be easily verified, and the time required for the verification can be shortened.
  • trajectory display method by Embodiment 1 of this invention The figure which showed the example of the tool trace display by Embodiment 1 of this invention by contrast with the tool trace display by the conventional method.
  • work shape processing procedure in Embodiment 1 of this invention The flowchart which shows the process sequence for projecting and displaying the workpiece
  • FIG. FIG. 1 is a diagram showing a block configuration according to Embodiment 1 of the present invention.
  • the workpiece machining simulation unit 1 includes a workpiece shape processing unit 2 and a workpiece shape projection display unit 3, and the tool path processing unit 4 includes a tool path display determination unit 5 and a tool path projection display unit 6.
  • these processing units appropriately refer to or update the workpiece shape data 7, the tool shape data 8, the tool locus data 9, the machining surface / tool locus correspondence data 10, and the projection display parameter 11.
  • the workpiece shape data 7 is a three-dimensional model representing the momentary shape from the start to the end of the workpiece to be processed.
  • the tool shape data 8 is a three-dimensional model representing the shape of a part that acts on machining, such as a cutting edge part of a tool used for machining.
  • a polyhedral model based on a boundary expression, a voxel model based on a volumetric expression, and the like can be used.
  • the tool locus data 9 stores information related to the movement locus of the tool reference point from the start to the end of machining.
  • the tool trajectory data 9 is expressed as a series of segmented movement trajectory segments, and each movement trajectory segment includes information on the position coordinates of the start point and end point and the movement mode (linear movement, arc movement, etc.) between them. It is out.
  • the tool trajectory data 9 is stored only for some processes such as excluding the tool movement for rough machining in advance. Is also possible.
  • FIG. 6 is a diagram showing an internal configuration of the machining surface / tool path correspondence data 10.
  • Each row represents one entry, at least A “trajectory number” that individually identifies the movement trajectory segment in the tool trajectory data 9 and a machining surface created on the three-dimensional model of the workpiece shape data 7 as a result of the tool movement based on the movement trajectory segment are individually identified.
  • Each field includes a “machining surface number” and a “machining surface display flag” for recording whether or not the machining surface is displayed on the display screen.
  • the projection display parameter 11 is, for example, a projection parameter when displaying the projection figure of the three-dimensional model of the workpiece shape data 7 or the tool shape data 8 and the projection figure of the movement locus segment of the tool locus data 9 on the display screen 12. Data such as line-of-sight direction, gazing point, and display magnification are stored.
  • the workpiece shape processing unit 2 of the workpiece machining simulation unit 1 receives the tool shape data 8 and the tool locus data 9 and inputs the three-dimensional model of the tool shape data 8 into the movement locus described by the movement locus segment of the tool locus data 9. Then, the machining is simulated by sequentially deforming the three-dimensional model of the workpiece shape data 7.
  • 3 obtained by continuously moving the three-dimensional model of the tool shape data 8 along a curve corresponding to the movement mode from the start point to the end point of each movement locus segment sequentially read from the tool locus data 9.
  • An area where the three-dimensional sweep shape and the three-dimensional model of the workpiece shape data 7 intersect is calculated, and the process of updating the workpiece shape data 7 by subtracting the intersection region from the three-dimensional model of the workpiece shape data 7 is repeated.
  • a newly generated surface on the three-dimensional model of the workpiece shape data 7 is a machining surface, and an entry representing the correspondence relationship with the movement locus segment involved in the creation is entered in the machining surface-tool locus correspondence data 10.
  • FIG. 7 is a flowchart showing a processing procedure in these operations.
  • the movement trajectory segments are sequentially read out (steps S1 and S2), and the 3D sweep shape of the 3D model of the tool is generated to update the 3D model of the workpiece.
  • Step S3 When a new machining surface is created, a new entry is added to the machining surface-tool locus correspondence data 10 (S4 to S5).
  • S6 to S7 The process of deleting the corresponding entry (S6 to S7) is repeated.
  • the workpiece shape projection display unit 3 of the workpiece machining simulation unit 1 operates to project the updated three-dimensional model of the workpiece shape data 7 according to the projection display parameter 11, and the obtained projection figure is displayed on the display screen 12. indicate.
  • the logical value “true” is not displayed on the display screen of the machining surface of the workpiece shape data 7 on the 3D model.
  • the logical value “false” is recorded in the “machining surface display flag” field of the corresponding entry in the machining surface / tool path correspondence data 10.
  • the tool path display determination unit 5 examines each entry of the machining surface-tool path correspondence data 10, and A tool path to be displayed on the display screen 12 is determined.
  • the moving locus segment of the entry in which the logical value “true” indicating that the machining surface is displayed on the display screen by the machining surface-tool locus correspondence data 10 is determined as the display target.
  • the information of the movement locus segment is read from the data 7 and output to the tool locus projection display unit 6.
  • the tool trajectory projection display unit 6 operates to input information on the movement trajectory segment determined as a display target, and project and display the start point and end point of the movement trajectory segment, and the space curve defined by the movement mode. Projection processing is performed according to the parameter 11, and the obtained projection figure is additionally displayed on the display screen 12.
  • FIG. 8 is a flowchart showing a processing procedure in a series of operations related to the above display.
  • Display processing on the display screen generally occurs when the workpiece shape data 7 is updated as a result of the processing in the workpiece shape processing unit 2 or when the line-of-sight direction, display magnification, etc. are changed by the screen operation by the operator.
  • the workpiece shape projection display unit 3 reads the workpiece shape data 7 and displays the projected figure on the display screen 12 (steps S8 to S9).
  • the machining surface-tool The “machining surface display flag” field of the corresponding entry in the locus correspondence data 10 is updated (steps 10 to 12).
  • each entry is read out from the machining surface / tool locus correspondence data 7 by the tool locus display determining unit 5, and when the logical value of the “machining surface display flag” field is “true”, the tool locus projection display unit. 6 displays the projected image of the tool trajectory (steps S13 to S16).
  • FIG. 2 is a diagram showing an example of the tool path display according to the first embodiment in comparison with the tool path display by the conventional method.
  • FIG. 2B is an example of a display screen on which a tool path is displayed by a conventional method at a display magnification such that the entire work shape 13 shown in FIG. Are displayed in large quantities and densely, and it is difficult to identify the tool locus to be confirmed.
  • FIG. 6C is a display screen based on the tool path display according to the first embodiment, and the tool path display is limited to the tool path 15 related to the current machining shape of the workpiece. obtain.
  • FIGS. 2D and 2E are views for explaining the state of the tool trajectory display according to the present embodiment when the area of the rectangular frame 14 in FIG. 2A is enlarged and displayed.
  • a tool locus 16 indicated by a broken line in the drawing is a tool locus relating to a machining surface deviated from the field of view of the display screen, and is not a display target in the first embodiment, and is finally shown in FIG. Only the tool path 17 indicated by the solid line is displayed. The operation in this case will be described with reference to FIG.
  • the display magnification on the projection display parameter 11 is changed, and the workpiece shape projection display unit 3 projects the workpiece shape 13 according to the setting of the projection display parameter 11.
  • the figure is displayed on the display screen 12. Thereafter, the same operation as described in FIG. 7 is performed, and a tool path 17 corresponding to the machining surface of the enlarged workpiece shape 13 is displayed on the display screen 12.
  • the tool path related to the processing of the target part is automatically displayed by displaying the target part of the work requiring detailed confirmation on the tool path on the display screen. Therefore, since the tool path to be confirmed can be easily identified and focused without being confused with other irrelevant tool paths, the verification operation of the machining program is facilitated.
  • the tool trajectory related to the machining surface of the workpiece displayed on the entire display screen is determined as a display target.
  • the tool trajectory to be displayed may be determined on the basis of the machining surface of the workpiece displayed in a specific partial area such as a rectangular area, or the specific partial area may be set at an arbitrary time.
  • FIG. 3 is a diagram showing an example of displaying a tool path limited to a specific partial area according to the first embodiment.
  • a rectangular frame 18 is obtained by inputting an operation screen input to the target part of the workpiece that requires detailed confirmation regarding the tool path by the operator.
  • the tool path related to the machining surface displayed in the rectangular area is changed from the tool path related to the machining surface of the workpiece displayed on the entire display screen. The fact that it has been changed to is set in the projection display parameter 11.
  • the workpiece shape projection display unit 3 reads the setting of the display range of the tool trajectory from the projection display parameter 11, and the correspondence in the machining surface-tool trajectory correspondence data 10 depending on whether each machining surface is displayed in the rectangular area. Since the “machining surface display flag” field of the entry to be updated is operated, the tool path display determination unit 5 restricts only the tool path related to the machining surface displayed in the rectangular area and finally displays the figure. The display result shown in 3 (b) is obtained.
  • a part of the target machining surface may be selected from the machining surfaces of the workpiece displayed on the display screen by a graphic selection operation using a pointing device such as a mouse.
  • Embodiment 2 the tool trajectory related to the machining surface of the workpiece displayed on the display screen is determined as the display target. However, other tool trajectories connected before and after the tool trajectory that is the display target. The range of the display target may be extended and expanded so that it is included.
  • the type of NC G code command that is the origin of the movement locus is stored and held in the tool locus data 9 as related information. The operation has been changed to extend and expand the display target range up to the tool approach and / or retraction movement trajectory.
  • the tool trajectory display determination unit 5 in FIG. 1 refers to the tool trajectory data 9 in order for the trajectory segments that are continuous before and after the moving trajectory segment determined as the display target by the method of the first embodiment.
  • the movement trajectory segment until the movement trajectory segment having the G0 command, which is a fast-forward positioning command used for tool approach and retraction, as related information appears is determined as an additional display target.
  • FIG. 9 is a flowchart showing a processing procedure in a series of operations related to the above display.
  • the workpiece shape is displayed on the display screen 12 by the same method as in the first embodiment, and the tool path related to the machining surface of the workpiece displayed on the display screen 12 is displayed (steps S8 to S16).
  • the tool trajectory display determination unit 5 reads the moving trajectory segment immediately before the displayed moving trajectory segment from the tool trajectory data 9, and determines the display target when the type of NC G code command is a G0 command.
  • the tool path projection display unit 6 additionally displays a projected pattern of the tool path (steps S17 to S19).
  • the tool trajectory display determination unit 5 reads the next moving trajectory segment from the tool trajectory data 9 and determines the display target when the NC G code command type is the G0 command, and projects the tool trajectory.
  • the projected image of the tool path is additionally displayed on the display unit 6 (steps S20 to S22).
  • FIG. 4 is an example of the tool path display according to the second embodiment, and the approach and retraction movement path segments 19 and 20 shown by broken lines in FIG. 4A correspond to the G0 command which is a fast-forward positioning command.
  • the G0 command which is a fast-forward positioning command.
  • it is not a display target by default because it is not involved in the creation of the machining surface of the workpiece
  • the screen display result shown in (b) is obtained.
  • a moving trajectory segment connected to only one of the front or rear rather than both before and after the moving trajectory segment to be displayed may be displayed.
  • Embodiment 3 the tool trajectory related to the machining surface of the workpiece displayed on the display screen or the tool trajectory obtained by extending and expanding it to a predetermined range is determined as the display target. On the contrary, the range of the tool trajectory to be displayed may be limited to be reduced.
  • data having order such as elapsed time and serial number from the start of machining is stored and held in the tool trajectory data 9 as related information.
  • the tool trajectory display determination unit 5 in FIG. 1 refers to data such as elapsed time and serial numbers held as related information among the movement trajectory segments determined as display targets by the method of the first or second embodiment. Thus, the operation is changed so as to determine the final movement trajectory segment to be displayed while leaving the movement trajectory segment in a predetermined range.
  • the tool path display determination unit 5 reads the movement path segment determined as the display target from the tool path data 9. Compare the data such as the elapsed time and serial number held there with the set range, and move from the last movement trajectory segment during the simulation up to N seconds (or N) in the past. The display target range of the trajectory segment is determined.
  • FIG. 10 is a flowchart showing a processing procedure in a series of operations related to the above display.
  • the workpiece shape is displayed on the display screen 12 in FIG. 1 by the same method as in the first embodiment, and the movement trajectory segment related to the machining surface of the workpiece displayed on the display screen 12 is read (steps S8 to S15). ).
  • the tool trajectory display determination unit 5 determines the tool trajectory to be displayed when related information such as the elapsed time and serial number held in the read movement trajectory segment is within the range set from the operation screen.
  • the tool path projection display unit 6 displays the projected pattern of the tool path (steps S23 to S24).
  • FIG. 5 is a diagram for explaining the operation of the tool path display according to the third embodiment. Since the tool path 15 is machined, the tool path 15a indicated by a broken line in FIG. 5A is the tool path 15a. However, in the third embodiment, it is excluded from the display target because it is executed at an early stage of the processing program. A screen display result for displaying the tool path 15b shown in (b) is obtained. The range designation based on the elapsed time and the serial number moves in parallel with the progress of the machining simulation, and brings about an animation effect that disappears from the display screen in order from the old tool trajectory. As a result, the tool path can be confirmed under a more limited target range, and the machining program can be easily verified.
  • the tool path display method and the tool path display apparatus according to the present invention are suitable for displaying a tool path that is easy to verify even for a large-scale machining program.

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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)
  • Numerical Control (AREA)

Abstract

Selon l'invention, lorsqu'une section affichage de projection de la forme d'une pièce affiche graphiquement sur un écran d'affichage un graphique projeté (13) d'un modèle tridimensionnel d'une pièce dont la forme est traitée par une simulation d'usinage par une section de traitement de la forme de la pièce, une surface usinée crée à l'étape de traitement de la forme et une trajectoire d'outil (15) intervenant dans la création de celle-ci sont associées à une indication de l'affichage ou du non-affichage de la surface usinée sur l'écran d'affichage. Une section détermination d'affichage de la trajectoire d'un outil spécifie une trajectoire d'outil correspondant à une surface usinée de la forme de la pièce affichée sur l'écran d'affichage en tant qu'objet à afficher (17), et une section affichage de projection de la trajectoire d'un outil affiche graphiquement sur l'écran d'affichage un graphique projeté (17) de la trajectoire de l'outil spécifiée en tant qu'objet à afficher, superposé au graphique projeté (13) du modèle tridimensionnel de la pièce.
PCT/JP2012/000863 2012-02-09 2012-02-09 Procédé et appareil d'affichage de la trajectoire d'un outil WO2013118179A1 (fr)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5843053B1 (ja) * 2014-07-23 2016-01-13 三菱電機株式会社 表示装置及び表示方法
WO2021025149A1 (fr) * 2019-08-07 2021-02-11 Dmg森精機株式会社 Dispositif d'estimation d'informations d'état d'usinage et appareil de diagnostic d'état d'usinage
JP6915182B1 (ja) * 2021-02-17 2021-08-04 Dmg森精機株式会社 工作機械、工作機械の制御方法、および工作機械の制御プログラム
WO2021193768A1 (fr) * 2020-03-27 2021-09-30 ファナック株式会社 Système de détermination
WO2022050254A1 (fr) * 2020-09-07 2022-03-10 ファナック株式会社 Dispositif d'affichage de forme d'onde
WO2024084706A1 (fr) * 2022-10-21 2024-04-25 ファナック株式会社 Dispositif de correction d'instruction d'usinage et procédé de correction d'instruction d'usinage

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JPH059850U (ja) * 1991-07-17 1993-02-09 東芝機械株式会社 数値制御装置
JPH09120308A (ja) * 1995-10-24 1997-05-06 Fanuc Ltd 工具経路描画方法
JP3878516B2 (ja) * 2002-06-20 2007-02-07 オークマ株式会社 Ｎｃデータの工具軌跡表示方法及びｎｃデータ解析方法
JP2011141673A (ja) * 2010-01-06 2011-07-21 Mitsubishi Electric Corp 加工シミュレーション装置および数値制御装置

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JPS61105615A (ja) * 1984-10-29 1986-05-23 Okuma Mach Works Ltd Ｎｃデ−タ作成装置における加工領域指定方式
JPH059850U (ja) * 1991-07-17 1993-02-09 東芝機械株式会社 数値制御装置
JPH09120308A (ja) * 1995-10-24 1997-05-06 Fanuc Ltd 工具経路描画方法
JP3878516B2 (ja) * 2002-06-20 2007-02-07 オークマ株式会社 Ｎｃデータの工具軌跡表示方法及びｎｃデータ解析方法
JP2011141673A (ja) * 2010-01-06 2011-07-21 Mitsubishi Electric Corp 加工シミュレーション装置および数値制御装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5843053B1 (ja) * 2014-07-23 2016-01-13 三菱電機株式会社 表示装置及び表示方法
WO2016013043A1 (fr) * 2014-07-23 2016-01-28 三菱電機株式会社 Dispositif d'affichage et procédé d'affichage
CN106575111A (zh) * 2014-07-23 2017-04-19 三菱电机株式会社 显示装置及显示方法
WO2021025149A1 (fr) * 2019-08-07 2021-02-11 Dmg森精機株式会社 Dispositif d'estimation d'informations d'état d'usinage et appareil de diagnostic d'état d'usinage
JP2021026598A (ja) * 2019-08-07 2021-02-22 Dmg森精機株式会社 加工状態情報推定装置及び加工状態診断装置
WO2021193768A1 (fr) * 2020-03-27 2021-09-30 ファナック株式会社 Système de détermination
WO2022050254A1 (fr) * 2020-09-07 2022-03-10 ファナック株式会社 Dispositif d'affichage de forme d'onde
JP6915182B1 (ja) * 2021-02-17 2021-08-04 Dmg森精機株式会社 工作機械、工作機械の制御方法、および工作機械の制御プログラム
WO2022176241A1 (fr) 2021-02-17 2022-08-25 Dmg森精機株式会社 Machine-outil, procédé de commande de machine-outil et programme de commande de machine-outil
WO2024084706A1 (fr) * 2022-10-21 2024-04-25 ファナック株式会社 Dispositif de correction d'instruction d'usinage et procédé de correction d'instruction d'usinage

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