WO2014155723A1 - 数値制御装置 - Google Patents
数値制御装置 Download PDFInfo
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- WO2014155723A1 WO2014155723A1 PCT/JP2013/059706 JP2013059706W WO2014155723A1 WO 2014155723 A1 WO2014155723 A1 WO 2014155723A1 JP 2013059706 W JP2013059706 W JP 2013059706W WO 2014155723 A1 WO2014155723 A1 WO 2014155723A1
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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
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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
- G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
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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
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35216—Program, generate nc program, code from cad data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Definitions
- the present invention relates to a numerical control device that controls a machine tool based on an NC command.
- a numerical control device that numerically controls a machine tool operates the NC machine tool based on an NC command in the NC program.
- NC numerically controls a machine tool
- an NC program for machining the workpiece is created.
- This NC program is often created using CAM (Computer Aided Manufacturing).
- CAM is a system that supports the creation of commands for numerical control devices by a computer.
- the CAM creates a tool path on the coordinate system set for the workpiece.
- the CAM is built into the CAM in order to apply commands (including the tool path, machine-specific command types, and operations according to the machine-specific configuration) to the NC machine tool that actually processes the workpiece.
- the command is converted into the NC command by the post processor.
- the CAM manufacturer sends a command that uses the type of machine-specific command (M code, etc.) and the operation according to the machine-specific configuration (operation according to the axis configuration, etc.) to each NC machine tool manufacturer's NC machine tool.
- M code machine-specific command
- the operation according to the machine-specific configuration operation according to the axis configuration, etc.
- a post processor is created for each type of NC machine tool for the same NC machine tool manufacturer. For this reason, in general, a CAM user needs to purchase or create a CAM post processor for the NC machine tool used by the CAM user.
- the NC device of Patent Document 1 determines whether or not this NC command can be executed by each NC machine tool. Converted to individual machine commands that can be processed with
- the above-described conventional technique has a problem that the user has to change the axis movement order or add a spindle control switching command to move to a machining start position or a machine-specific command. It was.
- Machine-specific operations in NC machine tools include tool change operations, coordinate system settings, spindle selection for machining, switching between spindle speed control and positioning control, movement to the machining start point position so as not to interfere with the workpiece, In many cases, it does not depend on the processing itself, such as moving to the end point of the processing.
- it is necessary to create a post processor for each NC machine tool model. is there. For this reason, it is desired to reduce the man-hours for developing the post processor by using the machine-specific command types or operations in common in each NC machine tool.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a numerical control device that can commonly use an operation command independent of machining for each NC machine tool.
- the present invention performs a first NC command that does not depend on the type of NC machine tool as an NC command for performing processing independent of NC machining, and performs the NC machining.
- a second NC command to be input an NC command input unit for inputting, a machine information storage unit for storing model information related to the model of the NC machine tool, and tool information of a tool used in the NC machine tool.
- a tool information storage unit that stores the command, a command analysis unit that determines whether or not the NC command input to the NC command input unit is a first NC command, and the NC command is the first NC command
- the designated operation program for causing the NC machine tool to perform a series of operations according to the first NC command based on the first NC command, the model information, and the tool information.
- Create finger A creation unit, characterized in that it comprises a control unit for controlling the NC machine tool by executing the specified operation program.
- the designated operation program for causing the NC machine tool to perform a series of operations is created based on the model information and tool information of the NC machine tool. Therefore, there is an effect that an operation command independent of machining can be commonly used for each NC machine tool.
- FIG. 1 is a block diagram showing the configuration of the numerical control apparatus according to the first embodiment.
- FIG. 2 is a diagram illustrating an example of machine information.
- FIG. 3 is a diagram illustrating an example of tool information.
- FIG. 4 is a diagram illustrating an example of an NC command independent of the axis configuration of NC machine tool and the presence and type of peripheral equipment.
- FIG. 5 is a flowchart showing an NC command execution processing procedure.
- FIG. 6 is a flowchart showing the NC command discrimination process procedure independent of machining.
- FIG. 7 is a flowchart showing a procedure for creating a designated operation program when a tool change operation is performed.
- FIG. 8 is a flowchart showing the procedure for creating the designated operation program when the coordinate system is set.
- FIG. 1 is a block diagram showing the configuration of the numerical control apparatus according to the first embodiment.
- FIG. 2 is a diagram illustrating an example of machine information.
- FIG. 3 is a diagram illustrating an example of tool information.
- FIG. 9 is a flowchart showing the procedure for creating the designated operation program when moving to the start point position.
- FIG. 10 is a flowchart showing the procedure for creating the designated operation program when moving to the end point position.
- FIG. 11 is a block diagram showing the configuration of the numerical control apparatus according to the second embodiment.
- FIG. 12 is a block diagram illustrating a configuration of the numerical control device according to the third embodiment.
- FIG. 13 is a diagram illustrating correspondence information that is a correspondence relationship in the command format.
- FIG. 1 is a block diagram showing the configuration of the numerical control apparatus according to the first embodiment.
- the numerical control device 1A is a device that controls the NC machine tool 6 using an NC program.
- a common command NC command 3 for executing processing independent of the NC machine tool 6 is defined in advance.
- an NC command 3 that does not depend on the NC machine tool 6 is generated and input to the numerical controller 1A.
- the numerical controller 1A generates a common command (a specified operation program 4 to be described later) that can perform a series of operations based on the NC command 3 that does not depend on the NC machine tool 6, and uses the specified operation program 4 to The machine tool 6 is controlled.
- the process that does not depend on the NC machine tool 6 is, for example, a process that does not depend on machining (an operation that is independent of the type of machining), for example, tool change, coordinate system setting, movement to a start point position, or end point position. Move to.
- the numerical controller 1A generates, for example, a common command for causing the NC machine tool 6 to perform an operation related to machining preparation as an operation independent of machining.
- the numerical control device 1A includes an NC command input unit 10, a machine information storage unit 20, a tool information storage unit 30, a command analysis unit 40, a command creation unit 50, and a CNC control unit 60.
- the NC command input unit 10 sends the NC command 3 to the command analysis unit 40.
- the NC command input unit 10 sends the NC program information 5 to the command analysis unit 40 when the NC program information 5 in the NC program 2 is input.
- the NC command input unit 10 of the present embodiment includes, for example, a first NC command (NC command 3) that does not depend on the type of the NC machine tool 6 as an NC command for performing processing independent of NC machining, and NC machining. Is input.
- the NC program 2 is a program used for controlling the NC machine tool 6, and is created using, for example, CAM.
- the NC program 2 includes NC program information 5, an NC command 3 that is an operation command independent of machining, and an NC command (not shown) that is an operation command dependent on machining.
- the NC program information 5 includes material information of a workpiece (workpiece).
- the NC command 3 is a general-purpose NC command and is an NC command that does not depend on the type of the NC machine tool 6.
- the type of processing that does not depend on the NC machine tool 6 and the type of NC command 3 are associated in advance, and the CAM generates the NC command 3 according to the association. Keep it.
- the model of the NC machine tool is determined by at least one of the axis configuration of the NC machine tool, the presence / absence of peripheral equipment of the NC machine tool, and the type of peripheral equipment.
- an operation command that does not depend on the NC machine tool 6 is commonly used for each NC machine tool 6.
- the NC machine tool 6 is, for example, a machine that performs milling or a machine that performs turning.
- the machine information storage unit 20 is a memory or the like that stores machine information 91 related to the NC machine tool 6.
- the machine information storage unit 20 of the present embodiment stores model information regarding the model of the NC machine tool 6, for example, as the machine information 91.
- FIG. 2 is a diagram showing an example of machine information.
- the machine information 91 includes information related to the NC machine tool 6 model (second spindle model, composite model, etc.). For example, the axis configuration of the NC machine tool 6 and information on peripheral devices included in the NC machine tool 6 are included. And. Specifically, the machine information 91 includes at least one information on the axis configuration of the NC machine tool, the presence / absence of the peripheral device of the NC machine tool, and the type of the peripheral device as information on the NC machine tool model. Have.
- the machine information 91 may include, for example, specification information about an axis such as an axis name or an axis type, and specification information such as a tool post type (peripheral device type).
- the tool information storage unit 30 is a memory or the like that stores tool information 92 relating to a tool mounted on the NC machine tool 6.
- the tool information storage unit 30 of the present embodiment stores information on tools used in the NC machine tool 6 as the tool information 92.
- FIG. 3 is a diagram showing an example of tool information.
- the tool information 92 includes information on tools used in the NC machine tool 6 and peripheral devices such as a tool number (TNo.), A tool type, and a tool length.
- the command analysis unit 40 determines whether or not the NC command sent from the NC command input unit 10 is the NC command 3 that does not depend on machining. Specifically, the command analysis unit 40 determines that the NC command sent from the NC command input unit 10 depends on machining based on whether or not the NC command is the same as the NC command 3 set in advance. It is determined whether or not the NC command 3 is not to be performed.
- the command analysis unit 40 determines to perform a command operation that does not depend on machining.
- the command analysis unit 40 creates argument data from the argument (setting argument) that specifies the operation.
- the command analysis unit 40 sends the created argument data to the command creation unit 50.
- the command analysis unit 40 sends the NC program information 5 to the command creation unit 50.
- the command creation unit 50 reads the machine information 91 from the machine information storage unit 20 and reads the tool information 92 from the tool information storage unit 30.
- the command creating unit 50 creates the designated operation program 4 that performs a series of operations according to the NC command 3 based on the argument data, the machine information 91, and the tool information 92.
- the designated operation program 4 is, for example, an NC program created in the EIA format.
- the designated operation program 4 created by the command creation unit 50 does not depend on the model of the NC machine tool.
- the command creation unit 50 sends the created designated operation program 4 to the CNC control unit 60.
- the CNC control unit 60 controls the NC machine tool 6 by executing the designated operation program 4.
- the CNC control unit 60 has functions of a normal NC device such as a decoding unit that decodes the designated operation program 4, a distribution unit that distributes a movement command to each axis, and a servo control unit.
- FIG. 4 is a diagram showing an example of an NC command that does not depend on the axis configuration of NC machine tools, the presence or absence of peripheral devices, and the type.
- FIG. 4 shows the format and type of the NC command 3.
- the types of NC command 3 include tool change (TCHG), coordinate system setting (FRME), movement to the machining start point position (APRP), movement to the machining end point position (ESCP), and the like.
- NC command 3 each detailed operation is specified by the argument specified in NC command 3.
- Each of TCHG, FRME, APRP, and ESCP defines the type of processing (tool change, coordinate system setting, movement to the start point position, movement to the end point position).
- the designated operation program 4 is generated from the NC command 3 according to
- the movement command to the machining start point position is a command to move the tool from the initial position to the turning start position. Further, the movement to the machining end point position is a command for moving the tool from the turning end position to the initial position.
- the detailed operation is designated by the argument 81 for TCHG, and the detailed operation is designated by the argument 82 for FRME.
- the detailed operation is designated by the argument 83 for the APRP, and the detailed operation is designated by the argument 84 for the ESCP.
- the arguments 81 to 84 are specified as follows, for example.
- the argument 81 is X100. Y10. Z100. P1. T10. S1.
- the argument 82 is X100. Y10. Z100. B90. C90. It is I0 J1 K0 R45 G54 P1.
- the argument 83 is X100. Y10. Z100. A0. B90. C90. P1. It is.
- the argument 84 is X100. Y10. Z100. A0. B90. C90. P1. It is.
- FIG. 5 is a flowchart showing an NC command execution processing procedure.
- the NC command is sent to the command analysis unit 40.
- the NC program information 5 in the NC program 2 is input to the NC command input unit 10
- the NC program information 5 is sent to the command analysis unit 40.
- the command analysis unit 40 determines whether the NC command is the NC command 3 that does not depend on machining (step S10).
- the command analysis unit 40 determines that the NC machine tool 6 performs a command operation that does not depend on machining.
- the command analysis unit 40 creates argument data from the arguments specified by the NC command 3 (step S30).
- the command analysis unit 40 sends the created argument data to the command creation unit 50.
- the command creation unit 50 reads the machine information 91 from the machine information storage unit 20 and reads the tool information 92 from the tool information storage unit 30.
- the command creating unit 50 creates the designated operation program 4 that performs a series of operations according to the NC command 3 based on the argument data, the machine information 91, and the tool information 92 (step S40).
- the command creation unit 50 sends the created designated operation program 4 to the CNC control unit 60.
- the CNC control unit 60 executes the designated operation program 4 (step S50). After the CNC control unit 60 executes the designated operation program 4 (after completion of execution), the processing of the NC command 3 that does not depend on machining is completed (step S60).
- the command analysis unit 40 sends the NC command to the CNC control unit 60 as a normal NC command.
- the CNC control unit 60 performs normal numerical control when the NC command is a normal NC command or the designated operation program is in the G code format.
- FIG. 6 is a flowchart showing the NC command discrimination process procedure independent of machining.
- the command analysis unit 40 determines the operation of the NC command 3 that does not depend on machining and the meaning of the argument specified by the NC command 3. In other words, the command analysis unit 40 determines the type of processing specified by the NC command 3.
- the command analysis unit 40 determines whether or not the NC command 3 is TCHG (step S110). When the NC command 3 is TCHG (step S110, Yes), the command analysis unit 40 determines that the NC command 3 is a command for a tool change operation (step S111).
- the command analysis unit 40 reads the argument from the NC command 3, and creates argument data for the tool change operation based on the argument.
- the command analysis unit 40 treats the arguments X, Y, and Z as positions (change positions) for performing tool change commands for each axis.
- the command analysis unit 40 treats the argument P as the order in which the axes are moved (axis movement order).
- the command analysis unit 40 treats the argument T as a tool to be exchanged (exchange tool), and treats the argument S as a spindle (machining spindle) to be machined with the exchanged tool (step S112).
- the machining spindle is, for example, a first spindle or a second spindle.
- the command analysis unit 40 transmits the created argument data to the command creation unit 50 and ends the determination process for the NC command 3 (step S150).
- step S110, No the command analysis unit 40 determines whether or not the NC command 3 is FRME (step S120).
- the command analysis unit 40 determines that the NC command 3 is a coordinate system setting command (step S121).
- the command analysis unit 40 reads an argument from the NC command 3 and creates argument data for setting a coordinate system based on the argument.
- the command analysis unit 40 treats the arguments X, Y, and Z as coordinate system shift amounts.
- the command analysis unit 40 treats the arguments A, B, and C as index angles.
- the command analysis unit 40 treats the arguments I, J, and K as coordinate rotation angle designation.
- the command analysis unit 40 treats the argument P as designation of coordinates to be constructed and treats the argument G as a work coordinate system to be selected (step S122).
- the command analysis unit 40 transmits the created argument data to the command creation unit 50 and ends the determination process for the NC command 3 (step S150). Further, in the NC command 3, when the coordinate system shift amount, the rotation center axis, and the coordinate conversion type are designated in the NC command 3, the command analysis unit 40 sends these designation information to the command creation unit 50.
- the command analysis unit 40 determines whether or not the NC command 3 is APRP (step S130). When the NC command 3 is APRP (step S130, Yes), the command analysis unit 40 determines that the NC command 3 is a movement command to the machining start point position (step S131).
- the command analysis unit 40 reads an argument from the NC command 3, and creates argument data for movement to the start point position based on the argument.
- the command analysis unit 40 treats the arguments X, Y, and Z as the start point position (machining start coordinates). Further, the command analysis unit 40 treats the arguments A, B, and C as start point angles. Further, the command analysis unit 40 treats the argument P as the axis movement order. Further, the command analysis unit 40 treats the argument T as a tool compensation type and treats the argument H as a tool compensation number (step S132).
- the command analysis unit 40 transmits the created argument data to the command creation unit 50 and ends the determination process for the NC command 3 (step S150).
- step S140 determines whether or not the NC command 3 is ESCP (step S140).
- step S140 determines that the NC command 3 is a movement command to the machining end point position (step S141).
- the command analysis unit 40 reads an argument from the NC command 3, and creates argument data for movement to the end point position based on the argument.
- the command analysis unit 40 treats the arguments X, Y, and Z as end point positions (machining end coordinates) in the work coordinate system.
- the command analysis unit 40 treats the arguments A, B, and C as index angles.
- the command analysis unit 40 treats the argument P as the axis movement order (step S142).
- the command analysis unit 40 transmits the created argument data to the command creation unit 50 and ends the determination process for the NC command 3 (step S150).
- the command analysis unit 40 may specify creation of a command necessary for an operation (clamping, unclamping, braking, or the like) after indexing the rotation axis as an argument.
- the command analysis unit 40 may acquire information from the machine information storage unit 20 after indexing the rotation axis, and create a command necessary for a predetermined operation (clamping, unclamping, braking, or the like).
- the command creation unit 50 creates the designated operation program 4 based on the argument data received from the command analysis unit 40. If the NC command 3 is not determined to be a corresponding command, it is processed as a normal NC command. That is, when the NC command is not any of TCHG, FRME, APRP, and ESCP, the command creating unit 50 does not execute the process and creates the designated operation program 4. Note that the procedure for determining the type of processing specified by the NC command 3 is not limited to the procedure shown in FIG. 6, and TCHG, FRME, APRP, and ESCP may be determined in any order.
- FIG. 7 is a flowchart showing a procedure for creating a designated operation program when a tool change operation is performed.
- the command creation unit 50 creates an operation command for preparing a tool change (step S210). Specifically, the command creation unit 50 creates a coolant OFF command. In addition, the command creation unit 50 confirms the tool post type based on the machine information 91. When the tool post type is ATC, the command creation unit 50 creates a command to open the shutter. In this way, the command creating unit 50 creates an M code command necessary for tool change.
- the command creation unit 50 creates a command to cancel the modal information set at the time of machining (step S220). Specifically, the command creation unit 50 creates a command for canceling the modal information, in which the tool change command T code cannot be executed.
- the command creation unit 50 confirms whether or not the exchange position is designated by the argument.
- the command creation unit 50 checks whether or not the axis movement order is designated by the argument (step S231). If there is no designation of the axis movement order (step S231, No), the command creation unit 50 creates a command to move to all the axes simultaneously at the replacement command position (step S232). On the other hand, if there is a designation of the axis movement order (step S231, Yes), the command creation unit 50 creates a command to move to the replacement command position in the designated axis movement order (step S233). Then, the command creating unit 50 creates a tool change command (step S240).
- the command creating unit 50 creates a tool change command (Step S240). After creating the tool change command, the command creation unit 50 reads the machine information 91 from the machine information storage unit 20. Based on the argument and the machine information 91, the command creation unit 50 determines whether or not the NC machine tool 6 is a model with the second spindle (step S250).
- step S250 determines whether the second spindle is specified by the argument of the NC command 3 (step S250). S251).
- step S251, No When there is no designation of the second spindle in the NC command 3 (step S251, No), the command creation unit 50 creates an operation command for selecting the first spindle (step S252). On the other hand, when the second spindle is designated in the NC command 3 (step S251, Yes), the command creation unit 50 creates a machine-specific operation command for selecting the second spindle (step S253).
- the command creating unit 50 determines whether the NC machine tool 6 is a composite model based on the argument and the machine information 91 (step S260).
- the command creation unit 50 reads the tool information 92 of the mounted tool from the tool information storage unit 30. Then, the command creating unit 50 determines whether or not the mounted tool is a turning tool based on the exchange tool designated by the argument and the tool information 92 (step S261).
- step S261, No When the mounted tool is not a turning tool (step S261, No), the command creating unit 50 creates an operation command specifying spindle positioning control (servo on) (step S262). On the other hand, when the mounted tool is a turning tool (step S261, Yes), the command creating unit 50 creates an operation command specifying spindle speed control (servo off) (step S263).
- the creation process of the specified operation program 4 for performing the tool change operation ends. Further, when the NC machine tool 6 is not a composite model, the creation process of the designated operation program 4 for performing the tool changing operation is completed.
- the command creation unit 50 sends the command created by the processing in steps S210 to S263 to the CNC control unit 60 as the specified operation program 4 for tool change operation.
- FIG. 8 is a flowchart showing the procedure for creating the designated operation program when the coordinate system is set.
- the command creation unit 50 creates a command (command to move the index position) to move the basic three axes to the machine position where the coordinate system is set (step S310). At this time, for the machine position where the coordinate system is set, the command creation unit 50 uses the value set in the machine information storage unit 20.
- the command creation unit 50 creates a rotation axis indexing command (step S320). Note that the command creation unit 50 does not create a rotation axis indexing command when there is no rotation axis in the shaft configuration registered in the machine information storage unit 20.
- the command creation unit 50 creates a command for selecting the workpiece coordinate system based on the information of the selected workpiece coordinate system acquired from the command analysis unit 40 (step S330). Note that the command creation unit 50 does not create a command for selecting the workpiece coordinate system when there is no designation of the selected workpiece coordinate system.
- the command creation unit 50 derives the coordinate system shift amount, the rotation center axis, and the coordinate conversion type based on the arguments acquired from the command analysis unit 40. Then, the command creation unit 50 creates a command for coordinate conversion from the work coordinate system based on the coordinate system shift amount, the rotation center axis, and the coordinate conversion type (step S340). Note that the command creation unit 50 does not create a command for coordinate conversion when there is no designation of the coordinate system shift amount, the rotation center axis, the coordinate conversion type, or the like.
- the command creation unit 50 When specifying the rotation axis or specifying the construction coordinates when setting the coordinate system, there are models that generate an alarm when an NC command is issued. Therefore, when the machine information 91 acquired from the machine information storage unit 20 does not have a rotation axis, the command creation unit 50 does not have to create a coordinate system setting NC command.
- the command creation unit 50 sends the command created by the processing of steps S310 to S340 to the CNC control unit 60 as the coordinate system setting designation operation program 4.
- FIG. 9 is a flowchart showing the procedure for creating the designated operation program when moving to the start point position.
- the command creation unit 50 creates a rotation axis movement command (step S410). Specifically, the command creation unit 50 creates a movement command to the start point angle (rotation axis index angle) acquired from the command analysis unit 40. Note that the command creation unit 50 does not create a rotation axis movement command when there is no rotation axis in the machine information 91 registered in the machine information storage unit 20.
- the command creation unit 50 obtains workpiece material information from the NC program information 5 (step S420).
- the command creating unit 50 creates contour information from the acquired material information (step S430).
- the command creation unit 50 calculates a via point based on the contour information so that the tool moves outside the contour shape (outside the material) to the machining start point position. In other words, a waypoint of movement to the start point position is calculated (step S440).
- the command creation unit 50 creates a movement command to the waypoint calculated in step S440 in accordance with the axis movement order designation acquired from the command analysis unit 40 (step S450). Then, the command creation unit 50 creates a movement command to the start point position acquired from the command analysis unit 40 (step S460). The command creation unit 50 creates a tool correction command according to the tool correction type and the tool correction number acquired from the command analysis unit 40 (step S470). The command creation unit 50 sends the command created by the processing of steps S410 to S470 to the CNC control unit 60 as the designated operation program 4 that commands the movement to the start point position.
- FIG. 10 is a flowchart showing the procedure for creating the designated operation program when moving to the end point position.
- the command creation unit 50 acquires workpiece material information from the NC program information 5 (step S510).
- the command creation unit 50 creates contour information from the acquired material information (step S520).
- the command creation unit 50 calculates a via point based on the contour information so that the tool moves outside the contour shape (outside the material) to the machining end point position. In other words, a waypoint for movement to the end point position is calculated (step S530).
- the command creation unit 50 creates a movement command to the waypoint calculated in step S530 in accordance with the axis movement order designation acquired from the command analysis unit 40 (step S540). Then, the command creation unit 50 creates a movement command to the end point position acquired from the command analysis unit 40 (step S550).
- the command creation unit 50 creates a rotation axis movement command (step S560). Specifically, the command creation unit 50 creates a movement command to the end point angle (rotation axis index angle) acquired from the command analysis unit 40. The command creation unit 50 sends the command created by the processes of steps S510 to S560 to the CNC control unit 60 as the designated operation program 4 that commands the movement to the end point position.
- the designated operation program 4 created by the command creation unit 50 is immediately executed by the CNC control unit 60. When all the commands of the designated operation program 4 are executed, the processing by the NC command 3 is finished, and the next NC command of the designated operation program 4 is executed. The designated operation program 4 is deleted as soon as it is executed.
- the NC command 3 is input to the numerical control device 1A.
- the NC program itself including the NC command 3 may be input to the numerical control device 1A.
- the NC command 3 in the NC program is input to the NC command input unit 10.
- the NC command 3 that does not depend on the NC machine tool 6 is defined in advance.
- the CAM creates the NC command 3 according to the definition, and the numerical controller 1A generates the designated operation program 4 used for controlling the NC machine tool 6 from the NC command 3 according to the definition.
- the numerical controller 1A can use the specified operation program 4 generated from the NC command 3 in common for each NC machine tool 6.
- the post processor can output to the numerical control apparatus 1A as a command in which the type of machine-specific command for each NC machine tool 6 and the machine-specific operation are made common. Therefore, the man-hours required for the development of the post processor can be reduced, and the development of the post processor becomes easy.
- the same NC program can be used without depending on the vertical type and the horizontal type, so it is possible to reduce the trouble of changing the NC command.
- Embodiment 2 of the present invention will be described with reference to FIG.
- the designated operation program 4 is changed in accordance with an instruction from the user, and the changed NC program is output to the outside.
- FIG. 11 is a block diagram showing the configuration of the numerical control apparatus according to the second embodiment.
- constituent elements in FIG. 11 constituent elements that achieve the same functions as those of the numerical control apparatus 1 ⁇ / b> A of the first embodiment shown in FIG.
- the numerical control device 1B includes an instruction input unit 71 in addition to the components of the numerical control device 1A.
- the instruction input unit 71 receives an instruction (user instruction) input by the user and sends the user instruction to the CNC control unit 60.
- the user instruction input to the instruction input unit 71 is an instruction to change the operation of the NC machine tool 6.
- the user instruction is an instruction to change the operation of the NC machine tool 6, for example, an instruction to add or change a parameter that defines the operation, an instruction to change an argument of the operation command, or an instruction to execute the operation Etc.
- the numerical controller 1B sends the designated operation program 4 generated by the command creation unit 50 to the CNC control unit 60.
- the CNC control unit 60 waits for a user instruction input from the instruction input unit 71 without executing the designated operation program 4.
- the user instruction input to the instruction input unit 71 is sent to the CNC control unit 60.
- the CNC control unit 60 changes the designated operation program 4 according to the user instruction.
- the CNC control unit 60 externally outputs the designated operation program 4 changed according to the user instruction.
- the CNC control unit 60 may control the NC machine tool 6 using the designated operation program 4 changed according to the user instruction.
- the designated operation program 4 is changed in accordance with a user instruction input to the instruction input unit 71, so that it is possible to cause the NC machine tool 6 to perform an operation desired by the user.
- Embodiment 3 FIG. Next, Embodiment 3 of the present invention will be described with reference to FIG.
- the argument data of the designated operation program 4 is replaced with a macro program created in advance. Further, the argument data of the NC command 3 is interpreted using a macro program prepared in advance.
- FIG. 12 is a block diagram showing the configuration of the numerical control apparatus according to the third embodiment.
- the constituent elements in FIG. 12 that achieve the same functions as those of the numerical controller 1A of the first embodiment shown in FIG.
- the numerical control device 1C includes an arbitrary operation program storage unit 72 in addition to the components of the numerical control device 1A.
- the arbitrary operation program storage unit 72 is a memory for storing a macro program created in advance by the user.
- the arbitrary operation program storage unit 72 stores a correspondence relationship between the designated operation program 4 and the macro program in advance.
- the arbitrary operation program storage unit 72 stores the correspondence between the interpretation of the argument data and the macro program in advance.
- the arbitrary operation program storage unit 72 is connected to the command analysis unit 40 and the CNC control unit 60.
- the numerical control device 1C sends the designated operation program 4 generated by the command creation unit 50 to the CNC control unit 60.
- the CNC control unit 60 checks the macro program in the arbitrary operation program storage unit 72 before executing the designated operation program 4.
- the CNC control unit 60 replaces the designated operation program 4 with the macro program.
- the NC command 3 (designated operation program 4) can be executed using a macro program created by the user.
- the command analysis unit 40 creates the argument data of the NC command 3 and then checks the macro program in the arbitrary operation program storage unit 72 before sending the argument data to the command creation unit 50.
- the command analysis unit 40 interprets the argument data using the macro program.
- the numerical controller 1C may perform only one of the process of replacing the designated operation program 4 with a macro program and the process of interpreting the argument data using the macro program.
- the designated operation program 4 is replaced with a macro program created in advance, so that the designated operation program 4 desired by the user can be created. Since the argument data is interpreted using a macro program, the designated operation program 4 desired by the user can be created.
- Embodiment 4 FIG. Next, a fourth embodiment of the present invention will be described with reference to FIG.
- an NC command format that does not depend on the NC machine tool 6 is prepared in advance, and the NC command 3 is changed to the prepared NC command format.
- a numerical control device 1D (not shown) having the same configuration as the numerical control device 1A is used.
- the machine information storage unit 20 of the numerical controller 1D stores correspondence information (correspondence between command formats) in which the NC command 3 is associated with a predetermined command format.
- FIG. 13 is a diagram showing correspondence information that is a correspondence relationship in the command format.
- the correspondence information 93 is information in which a command in the NC command 3 and a command in an arbitrary format for changing the NC command 3 are associated with each other.
- the pre-change command in the correspondence information 93 is the NC command 3, and the post-change command name is the command name of the post-change command when the NC command 3 is changed.
- the changed command name is set in advance in an arbitrary command format.
- the arbitrary command format here is an arbitrary character string indicated by the changed command name in FIG. 13, for example, a commonly used G code command, M code command, or the like.
- the post-change command is an NC command that does not depend on the NC machine tool.
- the valid command in the correspondence information 93 indicates which of the pre-change command and the post-change command name is to be adopted, and is set in advance according to an instruction from the user.
- the valid command indicates the pre-change command
- the NC command 3 is used as it is.
- the valid command indicates the changed command name
- the NC command 3 is changed to the changed command name.
- the command creating unit 50 changes the NC command 3 to the command format of the changed command name based on the correspondence information 93. As a result, the NC command 3 can be changed to an arbitrary command format.
- the NC machine tool 6 can be caused to execute the NC command 3 in the command format desired by the user. It becomes possible.
- the numerical control device is suitable for control of processing that does not depend on machining of an NC machine tool.
- 1A to 1C numerical control device 2 NC program, 3 NC command, 4 designated operation program, 5 NC program information, 6 NC machine tool, 10 NC command input unit, 20 machine information storage unit, 30 tool information storage unit, 40 command Analysis unit, 50 command creation unit, 60 CNC control unit, 71 instruction input unit, 72 arbitrary operation program storage unit, 91 machine information, 92 tool information, 93 correspondence information.
Abstract
Description
図1は、実施の形態1に係る数値制御装置の構成を示すブロック図である。数値制御装置1Aは、NCプログラムを用いてNC工作機械6を制御する装置である。本実施の形態では、予めNC工作機械6に依存しない処理を実行するための共通指令(NC指令3)を定義しておく。そして、NC工作機械6に依存しないNC指令3を生成し、数値制御装置1Aに入力する。数値制御装置1Aは、NC工作機械6に依存しないNC指令3に基づいて、一連の動作を行うことができる共通指令(後述する指定動作プログラム4)を生成し、指定動作プログラム4を用いてNC工作機械6を制御する。
引数81は、X100.Y10.Z100.P1.T10.S1である。
引数82は、X100.Y10.Z100.B90.C90.I0 J1 K0 R45 G54 P1である。
引数83は、X100.Y10.Z100.A0.B90.C90.P1.である。
引数84は、X100.Y10.Z100.A0.B90.C90.P1.である。
つぎに、指令解析部40によるNC指令3の判別処理について説明する。図6は、加工に依存しないNC指令の判別処理手順を示すフローチャートである。指令解析部40は、加工に依存しないNC指令3の動作およびNC指令3で指定された引数の意味を判別する。換言すると、指令解析部40は、NC指令3で指定されている処理の種類を判別する。
図7は、工具交換動作を行う場合の指定動作プログラムの作成手順を示すフローチャートである。指令作成部50は、工具交換準備の動作指令を作成する(ステップS210)。具体的には、指令作成部50は、クーラントOFFの指令を作成する。また、指令作成部50は、機械情報91に基づいて刃物台タイプを確認する。刃物台タイプがATCの場合、指令作成部50は、シャッター開を行う指令を作成する。このように、指令作成部50は、工具交換する際に必要なMコードの指令を作成する。
図8は、座標系設定を行う場合の指定動作プログラムの作成手順を示すフローチャートである。指令作成部50は、座標系設定を行う機械位置に基本3軸を移動させる指令(割り出し位置を移動させる指令)を作成する(ステップS310)。このとき、座標系設定を行う機械位置については、指令作成部50は、機械情報記憶部20に設定している値を用いる。
図9は、開始点位置への移動を行う場合の指定動作プログラムの作成手順を示すフローチャートである。指令作成部50は、回転軸移動指令を作成する(ステップS410)。具体的には、指令作成部50は、指令解析部40から取得した開始点角度(回転軸の割り出し角度)への移動指令を作成する。なお、指令作成部50は、機械情報記憶部20に登録している機械情報91に回転軸が存在しない場合には、回転軸移動指令を作成しないものとする。
図10は、終了点位置への移動を行う場合の指定動作プログラムの作成手順を示すフローチャートである。指令作成部50は、NCプログラム情報5からワークの素材情報を取得する(ステップS510)。指令作成部50は、取得した素材情報から輪郭情報を作成する(ステップS520)。
つぎに、図11を用いてこの発明の実施の形態2について説明する。実施の形態2では、ユーザからの指示に従って指定動作プログラム4を変更し、変更後のNCプログラムを外部出力する。
つぎに、図12を用いてこの発明の実施の形態3について説明する。実施の形態3では、指定動作プログラム4の引数データを、予め作成しておいたマクロプログラムで置き換える。また、NC指令3の引数データを、予め作成しておいたマクロプログラムを用いて解釈する。
つぎに、図13を用いてこの発明の実施の形態4について説明する。実施の形態4では、NC工作機械6に依存しないNC指令の形式を予め準備しておき、NC指令3を、準備しておいたNC指令の形式に変更する。
Claims (9)
- NC加工に依存しない処理を行なわせるNC指令としてNC工作機械の機種に依存しない第1のNC指令と、前記NC加工を行なわせる第2のNC指令と、が入力されるNC指令入力部と、
前記NC工作機械の機種に関する機種情報を記憶しておく機械情報記憶部と、
前記NC工作機械で使用する工具の工具情報を記憶しておく工具情報記憶部と、
前記NC指令入力部に入力されたNC指令が第1のNC指令であるか否かを判別する指令解析部と、
前記NC指令が前記第1のNC指令である場合に、前記第1のNC指令と、前記機種情報と、前記工具情報とに、基づいて、前記NC工作機械に前記第1のNC指令に応じた一連の動作を行なわせる指定動作プログラムを作成する指令作成部と、
前記指定動作プログラムを実行することによって前記NC工作機械を制御する制御部と、
を備えることを特徴とする数値制御装置。 - 前記NC工作機械の加工に依存しない処理は、工具交換、座標系設定、加工の開始点位置への移動または加工の終了点位置への移動であることを特徴とする請求項1に記載の数値制御装置。
- 前記機械情報記憶部は、前記機種情報として、前記NC工作機械の軸構成と、前記NC工作機械の周辺機器の有無と、前記周辺機器の種類と、の少なくとも1つを記憶しておくことを特徴とする請求項1または2に記載の数値制御装置。
- 前記機械情報記憶部は、前記第1のNC指令と、変換用の指令形式と、の対応関係をさらに記憶にしておき、
前記指令解析部は、前記対応関係に基づいて、前記第1のNC指令を前記変換用の指令形式に変更することを特徴とする請求項1~3のいずれか1つに記載の数値制御装置。 - 前記指定動作プログラムに対応するマクロプログラムを予め格納しておく任意動作プログラム格納部をさらに備え、
前記制御部は、前記指定動作プログラムに対応するマクロプログラムに基づいて、前記指令作成部が作成した指定動作プログラムを前記マクロプログラムに変更することを特徴とする請求項4に記載の数値制御装置。 - 前記第1のNC指令を用いて作成される引数データに対応するマクロプログラムを予め格納しておく任意動作プログラム格納部をさらに備え、
前記指令解析部は、前記第1のNC指令を用いて引数データを作成するとともに、前記引数データに対応するマクロプログラムに基づいて、前記引数データを解釈することを特徴とする請求項4に記載の数値制御装置。 - 前記軸構成は、軸名称または軸タイプであり、前記周辺機器は、刃物台であることを特徴とする請求項3に記載の数値制御装置。
- 前記工具情報記憶部は、前記工具情報として、前記周辺機器で使用する工具の情報をさらに記憶しておくことを特徴とする請求項1~7のいずれか1つに記載の数値制御装置。
- ユーザからの指示を入力する指示入力部をさらに備え、
前記制御部は、前記ユーザからの指示に従って前記指定動作プログラムを変更し、変更後の指定動作プログラムを実行することを特徴とする請求項1~8のいずれか1つに記載の数値制御装置。
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US14/761,711 US9846424B2 (en) | 2013-03-29 | 2013-03-29 | Numerical control apparatus |
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US9846424B2 (en) | 2017-12-19 |
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