WO2016157395A1 - 数値制御装置 - Google Patents

数値制御装置 Download PDF

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Publication number
WO2016157395A1
WO2016157395A1 PCT/JP2015/060030 JP2015060030W WO2016157395A1 WO 2016157395 A1 WO2016157395 A1 WO 2016157395A1 JP 2015060030 W JP2015060030 W JP 2015060030W WO 2016157395 A1 WO2016157395 A1 WO 2016157395A1
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WO
WIPO (PCT)
Prior art keywords
group
machine
machining program
machining
data
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PCT/JP2015/060030
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English (en)
French (fr)
Japanese (ja)
Inventor
正一 嵯峨崎
啓志 伊藤
Original Assignee
三菱電機株式会社
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.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN201580078372.9A priority Critical patent/CN107430393B/zh
Priority to PCT/JP2015/060030 priority patent/WO2016157395A1/ja
Priority to JP2016520099A priority patent/JP6246915B2/ja
Priority to DE112015006392.7T priority patent/DE112015006392T5/de
Publication of WO2016157395A1 publication Critical patent/WO2016157395A1/ja

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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
    • G05B19/4155—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme

Definitions

  • the present invention relates to a numerical control device for controlling an NC machine tool.
  • Patent Document 1 a technique of machining using NC machine tools when machining both ends and outer diameter of a cylindrical or solid long workpiece is known.
  • Patent Document 1 the position of the tailstock shaft when the tailstock shaft is pressed against the end surface of the workpiece is detected by a detector, and the difference between the detected position of the tailstock shaft and a preset reference position is calculated.
  • An NC machine tool is disclosed in which a machining origin is corrected based on a calculated difference value, a tool is moved with reference to the corrected machining origin, and a workpiece is machined.
  • NC machine tools include multi-axis multi-system NC machine tools that have a plurality of systems and process workpieces with axes mounted in each system.
  • a numerical controller that controls a multi-axis multi-system NC machine tool creates a machining program for each system, and controls the multi-axis multi-system NC machine tool in synchronization with each system based on the machining program. It is processed.
  • the conventional numerical control apparatus cannot control one multi-axis multi-system NC machine tool and perform control such that a plurality of workpieces are independently processed in parallel.
  • the present invention has been made in view of the above, and provides a numerical control device capable of controlling a single multi-axis multi-system NC machine tool and independently machining a plurality of workpieces in parallel. Objective.
  • the present invention virtually divides NC machine tools into a plurality of machine configurations, and groups the machine configurations into a single system or a combination of two or more systems. Necessary when machining a workpiece by driving the NC machine tool by the machining program and a first storage unit for storing a plurality of machining programs for driving the NC machine tool so as to machine the workpiece with the machined configuration.
  • the program analysis unit that reads all machining programs by group and analyzes each machining program for each group, and the machining program and data that are read and analyzed
  • an interpolation processing unit that performs interpolation for each group.
  • the numerical control device controls a single multi-axis multi-system NC machine tool and can process a plurality of workpieces independently in parallel.
  • Configuration diagram of numerical control device for explaining when NC machine tools are virtually divided into a plurality of machine configurations and grouped by a combination of machine configurations
  • the figure which shows the correspondence of the machining program in a group 1 structural example, data, and a ladder program The figure which shows the correspondence of the machining program in group 1,2 composition example, data, and a ladder program
  • the figure which shows the correspondence of the machining program in group 1, 2, 3, 4 structural example, data, and a ladder program Diagram for explaining grouping settings with parameters Diagram for explaining grouping settings in the ladder program Diagram showing variables when grouped Diagram showing tool offset data when grouped Diagram showing spindle number grouping Diagram showing grouping of counter screens
  • the figure which shows a mode that the processing program test processing (program check function) by operation of a handle is performed independently for every group
  • FIG. 1 is a diagram illustrating a configuration of a numerical control apparatus 1 according to an embodiment.
  • the numerical control device 1 is a device that outputs a drive signal to the drive unit 2, drives the NC machine tool 3 to the drive unit 2, and causes the NC machine tool 3 to process a workpiece.
  • the numerical controller 1 is connected to an input operation unit 4 that is operated by an operator and a display unit 5 that displays display data.
  • the numerical controller 1 is a group-specific machining program storage unit 11 that is a first storage unit that stores a plurality of machining programs, and a group-specific grouping program that is a second storage unit that stores data used when machining a workpiece by group.
  • Data storage unit 12 program analysis unit 13 that analyzes each machining program, interpolation processing unit 14 that interpolates data in the analyzed machining program, acceleration / deceleration processing unit 15 that performs acceleration / deceleration processing, and drive unit 2
  • an axis data output unit 16 for outputting a drive signal as axis data.
  • the numerical control device 1 includes a parameter storage unit 17 that is a third storage unit that stores parameters, a data input / output unit 18 to which data is input, a PLC (Programmable Logic Controller) 19 that processes a ladder program, A machine control signal processing unit 20 that processes machine control signals, an input processing unit 21 that processes data input from the input operation unit 4, and a display processing unit 22 that processes display data are provided.
  • the group-specific machining program storage unit 11, the group-specific data storage unit 12, and the parameter storage unit 17 are collectively referred to as the storage unit 10.
  • a spindle number conversion table storage unit 23, an image display data storage unit 24, and a shared area 25, which will be described later, are also included in the storage unit 10.
  • the group-specific machining program storage unit 11, the group-specific data storage unit 12, and the parameter storage unit 17 may be configured by a single storage unit instead of separate storage units.
  • the machining program storage unit 11 for each group virtually divides the NC machine tool 3 into a plurality of machine configurations, groups the machine configurations in a single system or a combination of two or more, and works by the grouped machine configuration.
  • a plurality of machining programs for driving the NC machine tool 3 to perform machining are stored.
  • the group-specific data storage unit 12 stores data necessary for machining a workpiece by driving the NC machine tool 3 according to a machining program.
  • Data stored in the group-specific data storage unit 12 includes variables, tool offset data, and the like.
  • the program analysis unit 13 has a group-by-group analysis processing function for executing analysis processing by group, reads all the group-specific machining programs from the group-by-group machining program storage unit 11, analyzes each machining program, Write to 25.
  • the interpolation processing unit 14 has a group-by-group processing function for performing interpolation processing for each group and a group-independent processing function for performing interpolation processing independently for each group.
  • the interpolation processing unit 14 reads data from the common area 25 and interpolates each group using the analyzed machining program and data.
  • the acceleration / deceleration processing unit 15 performs acceleration / deceleration processing on the speed command included in the machining program corrected by interpolation. Specifically, when increasing the rotational speed of the shaft from 0 to 1000 rotations, the acceleration / deceleration processing unit 15 changes the speed command to increase the rotational speed of the main shaft from 0 to 1000 rotations over n 1 second, and after t seconds. In the case of decreasing from 1000 revolutions to 0, the speed command is changed to decrease from 1000 revolutions to 0 over 2 seconds after t seconds. Note that n 1 and n 2 are usually the same value.
  • the axis data output unit 16 divides the axis data output from the acceleration / deceleration processing unit 15 for each axis and outputs it to the drive unit 2.
  • the driving unit 2 supplies the axis data output from the axis data output unit 16 to each axis.
  • the drive unit 2 includes a servo control unit 2a that controls driving of each axis of the NC machine tool 3, and a servo motor 2b that is driven based on control by the servo control unit 2a.
  • the servo motor 2b is provided with a detector that detects the position and speed.
  • the parameter storage unit 17 stores a table in which groups and parameters are associated with each other.
  • the parameters are input from the data input / output unit 18 or the input operation unit 4 described later.
  • the program analysis unit 13 specifies a group corresponding to the parameter.
  • the program analysis unit 13 reads the machining program designated by the program search from the group-specific machining program storage unit 11 and starts the analysis of the read machining program by automatic activation (machine signal) input from the PLC 19.
  • the data input / output unit 18 has a group data input / output function for inputting / outputting data by group, and is an interface to which a personal computer is connected. The operator creates a machining program using a personal computer. The data input / output unit 18 is connected to a personal computer, and a machining program is input from the personal computer. The group-specific machining program storage unit 11 stores the machining program input from the data input / output unit 18.
  • the data input / output unit 18 can input / output data such as parameters and tool offsets as well as machining programs.
  • the PLC 19 has a group-specific PLC function that executes a PLC function for each group, and is a device that includes a CPU (Central Processing Unit) and a memory.
  • the PLC 19 processes a ladder program and controls the drive of an injector that injects cutting oil when the workpiece is machined by the NC machine tool 3, for example, and conveys the workpiece machined by the NC machine tool 3. Control the drive.
  • the PLC 19 executes the ladder program and identifies the group.
  • the program analysis unit 13 reads the machining program searched for operation from the group-specific machining program storage unit 11 and analyzes the read machining program.
  • the machine control signal processing unit 20 has a group-specific machine control signal processing function for executing processing for each group, and processes data for each group input from the PLC 19.
  • the input operation unit 4 is composed of a plurality of keys and is operated by an operator.
  • the input processing unit 21 processes the content input by the input operation unit 4 and stores the processed data in the storage unit 10.
  • the input processing unit 21 processes the content input by the input operation unit 4 to create a machining program, and stores the machining program in the group-specific machining program storage unit 11.
  • the operator can also read the machining program stored in the group-specific machining program storage unit 11 and edit the machining program by operating the input operation unit 4.
  • Tool offset data and the like are input to the group-specific data storage unit 12, and parameters are input to the parameter storage unit 17.
  • the numerical control apparatus 1 virtually divides the NC machine tool 3 into a plurality of machine configurations, groups the machine configurations in a single system or a combination of two or more, and processes workpieces by the grouped machine configuration.
  • a plurality of machining programs for driving the NC machine tool 3 are read from the group-by-group machining program storage unit 11, and the program analysis unit 13 analyzes the machining program for each group, and also provides tool offset data for each group. While reading and correcting the path, one NC machine tool 3 can be controlled, and a plurality of workpieces can be independently processed in parallel.
  • FIG. 2A is a conceptual diagram when one group is configured by using all the machine configurations of the NC machine tool 3.
  • FIG. 2B is a conceptual diagram when two groups are configured using two machine configurations of the NC machine tool 3.
  • FIG. 2C is a conceptual diagram in the case where four groups are configured by using the machine configuration of the NC machine tool 3 one by one.
  • the numerical control device 1 is a group 1 in which all the machine configurations are used.
  • this form is referred to as a group 1 configuration example.
  • the order of processing in group 1 is “machine configuration (1) ⁇ machine configuration (2) ⁇ machine configuration (3) ⁇ machine configuration (4)”.
  • the workpiece 1a is processed by the machine configuration (1), then processed by the machine configuration (2), then processed by the machine configuration (3), and then the machine configuration.
  • the workpiece 1b is carried out.
  • the numerical controller 1 can control one NC machine tool 3 and process one workpiece with four different machine configurations.
  • the numerical controller 1 uses the machine configuration (1) and the machine configuration (2) as the group 1, and uses the machine configuration (3) and the machine configuration (4).
  • This form is referred to as group 2.
  • this form is referred to as a group 1, 2 configuration example.
  • the order of processing in group 1 is “machine configuration (1) ⁇ machine configuration (2)”.
  • the order of processing in group 2 is “machine configuration (3) ⁇ machine configuration (4)”.
  • the workpiece 2a is processed by the machine configuration (1), and then processed by the machine configuration (2) to be carried out as the workpiece 2b.
  • the workpiece 3a is processed by the machine configuration (3), and then processed by the machine configuration (4) to be carried out as the workpiece 3b.
  • the group 1 and the group 2 can simultaneously process workpieces having the same shape, but can also simultaneously process workpieces having different shapes.
  • the numerical controller 1 can control one NC machine tool 3 independently for each group to simultaneously process workpieces having the same shape or different shapes.
  • the numerical controller 1 uses the machine configuration (1) as the group 1, the numerical configuration using the machine configuration (2) as the group 2, and uses the machine configuration (3).
  • This form is referred to as group 3, and the form using the machine configuration (4) is referred to as group 4.
  • this form is referred to as a group 1, 2, 3, 4 configuration example.
  • the workpiece 4a is unloaded as the workpiece 4b by being processed by the machine configuration (1).
  • the workpiece 5a is carried out as a workpiece 5b by being processed by the machine configuration (2).
  • the workpiece 6a is carried out as a workpiece 6b by being processed by the machine configuration (3).
  • the workpiece 7a is carried out as a workpiece 7b by being processed by the machine configuration (4).
  • group 1, group 2, group 3 and group 4 can simultaneously process workpieces having the same shape, workpieces having different shapes can also be simultaneously processed.
  • the numerical controller 1 can control a single NC machine tool 3 independently for each group to process workpieces having the same shape or different shapes.
  • FIG. 3 is a diagram illustrating a correspondence relationship among the machining program, data, and ladder program in the group 1 configuration example.
  • FIG. 4 is a diagram illustrating a correspondence relationship between the machining program, data, and ladder program in the group 1 and 2 configuration examples.
  • FIG. 5 is a diagram showing a correspondence relationship between the machining program, data, and ladder program in the group 1, 2, 3, and 4 configuration examples.
  • the machining program of the group 1 configuration example includes a machining program $ 1 for controlling the machine configuration (1), a machining program $ 2 for operating the machine configuration (2), and a machining program $ 3 for operating the machine configuration (3). And a machining program $ 4 for operating the machine configuration (4).
  • the machining program $ 1, machining program $ 2, machining program $ 3, and machining program $ 4 are usually different contents.
  • the data of the configuration example of group 1 is only the data corresponding to group 1.
  • the ladder program of the configuration example of group 1 is only the program corresponding to group 1. That is, the entire machine is controlled.
  • the machining programs of the group 1 and 2 configuration examples are a machining program $ 1 for operating the machine configuration (1), a machining program $ 2 for operating the machine configuration (2), and a machining program $ for operating the machine configuration (3). 1 and a machining program $ 2 for operating the machine configuration (4).
  • the machining program $ 1 and the machining program $ 2 are usually different contents.
  • the machining program $ 1 for operating the machine configuration (1) and the machining program $ 1 for operating the machine configuration (3) may be the same or different programs.
  • the machining program $ 2 that operates the machine configuration (2) and the machining program $ 2 that operates the machine configuration (4) may be the same or different programs.
  • the data of the group 1 and 2 configuration examples is divided into data corresponding to group 1 and data corresponding to group 2.
  • the ladder program of the group 1 configuration example is divided into a ladder program corresponding to the group 1 and a ladder program corresponding to the group 2.
  • the machine configuration (1), (2), the machine configuration (3), (4) is controlled.
  • the machining programs of the group 1, 2, 3, and 4 configuration examples are the machining program $ 1 that operates the machine configuration (1), the machining program $ 1 that operates the machine configuration (2), and the machine configuration (3). Machining program $ 1 and machining program $ 1 for operating the machine configuration (4). All the machining programs $ 1 may be programs having the same contents or different contents.
  • the data of the group 1, 2, 3, 4 configuration example is divided into data corresponding to group 1, data corresponding to group 2, data corresponding to group 3, and data corresponding to group 4. Yes.
  • the ladder program of the group 1, 2, 3, 4 configuration example includes a ladder program corresponding to group 1, a ladder program corresponding to group 2, a ladder program corresponding to group 3, and a ladder program corresponding to group 4.
  • the machine configuration (1), the machine configuration (2), the machine configuration (3), and the machine configuration (4) are respectively controlled.
  • FIG. 6 is a diagram for explaining the grouping setting by parameters.
  • FIG. 7 is a diagram for explaining the case where grouping is set by a ladder program.
  • FIG. 6A shows a first pattern in which grouping is set using parameters
  • FIG. 6B shows a second pattern in which grouping is set using parameters.
  • the system number item “1” indicates the machining program $ 1 for operating the machine configuration (1)
  • the system number item “2” indicates the machine configuration (2)
  • “3” in the item of system number indicates the machining program $ 1 for operating the machine configuration (3)
  • “4” in the item of system number is the machine configuration (4). Shows the machining program $ 2.
  • FIG. 6A shows the system number item “1” indicates the machining program $ 1 for operating the machine configuration (1)
  • the system number item “2” indicates the machine configuration (2).
  • “3” in the item of system number indicates the machining program $ 1 for operating the machine configuration (3)
  • “4” in the item of system number is the machine configuration (4). Shows the machining program $ 2.
  • FIG. 6A shows the system number item
  • the system number item “1” indicates the machining program $ 1 that operates the machine configuration (1), and the system number item “3” operates the machine configuration (3).
  • the system number item “2” indicates the machining program $ 1 that operates the machine configuration (2), and the system number item “4” operates the machine configuration (4).
  • the machining program $ 2 is shown. Further, as shown in the second pattern, the combination of machining programs does not need to have consecutive $ (system number) numbers.
  • the program analysis unit 13 reads the machining program of the group set by the parameters from the group-specific machining program storage unit 11 and analyzes the read machining program.
  • the main ladder sets grouping for the group 1 in the register R.
  • “Group 1 0011” in FIG. 7 indicates that the machining program $ 1 for operating the machine configuration (1) and the machining program $ 2 for operating the machine configuration (2) are grouped in group 1. It shows that.
  • “Group 2 1100” in FIG. 7 indicates that the machining program $ 1 for operating the machine configuration (3) and the machining program $ 2 for operating the machine configuration (4) are grouped in group 2. It shows that.
  • the PLC 19 calls the ladder program for group 1 and the ladder program for group 2 after the grouping setting is completed by the main ladder.
  • FIG. 8 is a diagram schematically showing variables.
  • FIG. 9 is a diagram schematically showing tool offset data.
  • the tool offset data is data for correcting the length, diameter, wear, etc. of the tool.
  • one type of tool offset data is set. Further, when grouping is set as in the above-described group 1 and 2 configuration examples, the tool offset data is set for each group.
  • the drive unit 2 has a plurality of main shafts, and a main shaft number for identifying each main shaft is attached.
  • the spindle number conversion table is stored in the spindle number conversion table storage unit 23.
  • FIG. 10 is a diagram schematically showing a spindle number conversion table.
  • the conversion table is a conversion table when grouping is set as in the above-described group 1 and 2 configuration examples.
  • the numerical control device 1 issues a command to the drive unit 2 according to the spindle number indicated in the machining program when there is no grouping setting.
  • the numerical control device 1 refers to the conversion table and converts the spindle number indicated in the machining program.
  • the spindle grouping processing unit 26 determines that “S1” without grouping setting is “S1” of group 1 and “S2” without grouping setting is group 1 “S3” without grouping setting is “S3” of group 1 and “S4” without grouping setting is “S1” of group 2 and “S5” without grouping setting. Assigns to “S2” of group 2.
  • FIG. 11 is a diagram schematically illustrating a counter screen displayed on the display unit 5.
  • the counter screen is stored in the image display data storage unit 24.
  • the display processing unit 22 has a display processing function for each group that executes display processing for each group.
  • the display processing unit 22 reads out the counter screen without the grouping setting from the image display data storage unit 24 and outputs it to the display unit 5.
  • the display unit 5 displays a counter screen.
  • the display processing unit 22 When there is a grouping setting, the display processing unit 22 reads the counter screen with the grouping setting from the image display data storage unit 24 and outputs it to the display unit 5 by the group-specific display processing function.
  • the display unit 5 displays a group 1 counter screen and a group 2 counter screen.
  • the interpolation processing unit 14 has a function that can be executed independently in parallel for each group.
  • the manual arbitrary reversing function is a function of causing the machining program to be executed in conjunction with the rotational speed of the handle when the operator turns the handle of the handle pulse generator. Turning the handle clockwise will move the machine in the forward direction, and turning the handle counterclockwise will move the machine in the backward direction. The operator can confirm the machining path based on the result of the manual arbitrary retrograde function while avoiding machine interference of the machining program.
  • the numerical control device 1 includes a handle H for executing a manual arbitrary retrograde function.
  • the interpolation processing unit 14 detects the operation speed based on the operation of the handle H, and interpolates at the detected operation speed the speed included in the analyzed machining program.
  • FIG. 12A is a diagram showing a state in which the machining programs $ 1, $ 2 belonging to the group 1 are moved forward by the operation of the handle H1, and the tool is driven.
  • FIG. 12B is a diagram illustrating a state in which the machining program $ 1, $ 2 belonging to the group 2 is reversed by operating the handle H2, and the tool is driven.
  • the handle H is composed of two.
  • the operator operates the channel switch “1ch” handle H in the forward direction.
  • the interpolation processing unit 14 changes the speed data in the machining programs $ 1, $ 2 belonging to the group 1 based on the rotation speed of the handle H.
  • the tool 1 turns the workpiece at a speed corresponding to the rotational speed of the handle H.
  • the tool 2 positions the tool at a speed corresponding to the rotational speed of the handle H.
  • the operator operates the channel switch “2ch” handle H in the backward direction.
  • the interpolation processing unit 14 changes the speed data in the machining programs $ 1, $ 2 belonging to the group 2.
  • the tool 1 and the tool 2 go backward at a speed corresponding to the rotational speed of the handle H, respectively.
  • the numerical control device 1 can execute the manual arbitrary retrograde function even for each group independently and simultaneously.
  • the handle H may be switched by one.
  • the machining programs $ 1 and $ 2 belonging to the group 1 are executed based on the operation of one handle H, and the machining programs $ 1 and $ 2 belonging to the group 2 are executed by switching the handle H.
  • the inter-system single block function is a function for stopping the operation of the numerical controller 1 by executing only one block of the machining program.
  • the interpolation processing unit 14 stops the processing program independently for each group and stops the processing program of the counterpart system.
  • FIG. 13A is a diagram for explaining the operation when the machining programs $ 1, $ 2 belonging to the group 1 are executed by the inter-system single block function.
  • FIG. 13B is a diagram for explaining the operation when the machining programs $ 1 and $ 2 belonging to the group 2 are executed by the inter-system single block function.
  • the machining program $ 2 is stopped at the timing when the block is stopped by the machining program $ 1. Further, in the group 1, the machining program $ 1 can be stopped at the timing when the machining program $ 2 stops. The same applies to group 2.
  • inter-system single block function of group 1 and the group 2 and inter-system single block function are independent, even if the machining program $ 1 belonging to group 1 stops, the machining program $ 1 belonging to group 2 , $ 2 do not pause, and even if the machining program $ 1 belonging to group 2 stops, the machining programs $ 1, $ 2 belonging to group 1 do not pause.
  • the numerical controller 1 can execute the inter-system single block function independently for each group.
  • the interpolation processing unit 14 has a function that can be executed in cooperation with the entire machine regardless of the defined group.
  • an interference check function will be described as an example of the function.
  • the interference check function is a function of simulating the operation of the NC machine tool 3 by a machining program and detecting a collision between tools or workpieces that are interference objects.
  • an approach distance between interference objects is set, and when approaching the approach distance, the approach is detected and a warning is displayed. Further, when a collision occurs in the next movement, an alarm signal is output and the movement is stopped without performing the next movement.
  • the interpolation processing unit 14 calculates machine coordinates from the position data, and checks for interference between predefined interfering objects.
  • FIG. 14 is a diagram for explaining a case in which a machining program is simulated by the interference check function. In the following description, it is assumed that the NC machine tools 3 are grouped according to the above-described group 1 and 2 configuration examples.
  • the interpolation processing unit 14 determines the reference machine coordinate origin, and uses the machine coordinate system origin offset, the interference model coordinate system offset, and the configuration solid offset to define the interference A according to Group 1 and the interference B according to Group 2. I do.
  • the interference object A and the interference object Bha are moved based on the coordinate values calculated by the interpolation processing unit 14.
  • Interpolation processing unit 14 outputs an alarm signal and stops without performing the next movement when the interference A and the interference B interfere with each other, that is, when the coordinates overlap in the next movement.
  • the numerical control apparatus 1 can perform the interference check between the groups, and can prevent the collision between the interferers.
  • the interference check between groups has been described.
  • an interference check within a group can also be performed.
  • FIG. 15 is a diagram for explaining the cooperative operation between group 1 and group 2.
  • Tool X1 is a tool driven by the machining program of group 1.
  • the tool Y1 is a tool driven by the machining program of group 2.
  • the group 1 machining program and the group 2 machining program have variables that can be used in common.
  • the group 1 machining program and the group 2 machining program are driven independently.
  • the machining program of group 1 writes “1” as a variable
  • the machining program of group 1 and the machining program of group 2 drive the tool in cooperation.
  • the group 2 machining program stops driving the tool Y1 and prioritizes the driving of the tool X1 by the group 1 machining program.
  • the machining program of group 2 resumes driving of the tool Y1.
  • it is one means to check the variable “0” or “1” in the machining programs in the group 1 and group 2 to change the operation.
  • the numerical control device 1 can execute a function of cooperative operation between groups by providing common data (variables) that can be used between defined groups, for example, avoiding collision between tools. Can do.
  • FIG. 16 is a diagram for explaining an operation of inputting / outputting data for each group.
  • the personal computer collectively inputs / outputs the machining programs $ 1, $ 2 belonging to the group 1 via the data input / output unit 18.
  • the personal computer collectively inputs / outputs the machining programs $ 1, $ 2 belonging to the group 2 via the data input / output unit 18. That is, machining programs can be input / output for each group.
  • the numerical controller 1 can efficiently input and output data.
  • Data and ladder programs can also be input / output by group.
  • FIG. 17 is a diagram for explaining the synchronization processing of machining programs between groups.
  • the program analysis unit 13 analyzes the machining program and performs synchronous processing with machining programs of other groups. Specifically, the program analysis unit 13 indicates waiting between groups when the machining program $ 1 or $ 2 belonging to group 1 and the machining program $ 1 or $ 2 belonging to group 2 are being executed. You can wait with a code.
  • the code indicating that the machining program belonging to group 1 waits with the machining program of group 2 is “GP2”.
  • the code indicating that the machining program belonging to group 2 waits with the machining program of group 1 is “GP1”.
  • the numerical control device 1 operates efficiently while synchronizing one NC machine tool 3 by performing a waiting process which is a partially synchronous process when controlling independently for each group. Can be made.
  • FIG. 18 shows a state in which the processing by group 1 and the processing by group 2 are independently performed in the group 1 and 2 configuration examples.
  • the work 3a is processed by the machine configuration (3) and then stopped by an emergency stop, alarm stop, NC reset, or the like.
  • the work 2a is processed by the machine configuration (1) without being affected by the stop of the group 2, and then processed by the machine configuration (2) and is carried out as a work 2b. Show.
  • the numerical control apparatus 1 is not affected by the other group even if a factor that stops the workpiece processing due to an emergency stop, alarm stop, NC reset, or the like occurs in one group. Processing can continue.
  • the numerical control device 1 includes a CPU 201 that performs an operation, a memory 202 that stores a program read by the CPU 201, an input unit 203 that receives a signal, a signal May be configured with an output unit 204 that outputs.
  • the storage unit 10 corresponds to the memory 202.
  • the program analysis unit 13, the interpolation processing unit 14, the acceleration / deceleration processing unit 15, the machine control signal processing unit 20, the input processing unit 21, the display processing unit 22, and the spindle grouping processing unit 26 execute the processing.
  • the functions to be performed are programmed and stored in the memory 202.
  • the input operation unit 4 corresponds to the input unit 203.
  • the CPU 201 reads a program stored in the memory, virtually divides the NC machine tool 3 into a plurality of machine configurations, groups the machine configurations in a single system or a combination of two or more, and groups the machines.
  • a plurality of machining programs for driving the NC machine tool 3 to machine the workpiece according to the configuration are read from the memory 202, analyzed for each machining program, and the NC machine tool 3 is driven by the machining program to machine the workpiece.
  • Necessary data is read out from the memory 202, the analyzed machining program is interpolated, and output from the output unit 204 to the drive unit 2.
  • the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
  • 1 numerical control device 2 drive unit, 3 NC machine tool, 4 input operation unit, 5 display unit, 10 storage unit, 11 grouped machining program storage unit, 12 grouped data storage unit, 13 program analysis unit, 14 interpolation process Unit, 15 acceleration / deceleration processing unit, 16 axis data output unit, 17 parameter storage unit, 18 data input / output unit, 19 PLC, 20 machine control signal processing unit, 21 input processing unit, 22 display processing unit, 23 spindle number conversion table Storage unit, 24 image display data storage unit, 25 shared area, 26 spindle grouping processing unit.
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