WO2023276121A9 - 数値制御装置 - Google Patents
数値制御装置 Download PDFInfo
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- WO2023276121A9 WO2023276121A9 PCT/JP2021/024998 JP2021024998W WO2023276121A9 WO 2023276121 A9 WO2023276121 A9 WO 2023276121A9 JP 2021024998 W JP2021024998 W JP 2021024998W WO 2023276121 A9 WO2023276121 A9 WO 2023276121A9
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- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 description 17
- 239000002826 coolant Substances 0.000 description 16
- 230000006870 function Effects 0.000 description 12
- 238000005520 cutting process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- KNMAVSAGTYIFJF-UHFFFAOYSA-N 1-[2-[(2-hydroxy-3-phenoxypropyl)amino]ethylamino]-3-phenoxypropan-2-ol;dihydrochloride Chemical compound Cl.Cl.C=1C=CC=CC=1OCC(O)CNCCNCC(O)COC1=CC=CC=C1 KNMAVSAGTYIFJF-UHFFFAOYSA-N 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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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
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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
- G05B19/408—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 data handling or data format, e.g. reading, buffering or conversion of data
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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
- G05B2219/32—Operator till task planning
- G05B2219/32105—Calculate machining axis, best feasible orientation for machining
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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
- G05B2219/35304—Real time analysis, check of program, just before machining
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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
- G05B2219/35376—Input program, analyze, store to buffer ready to control nc, no further data handling
Definitions
- the present disclosure relates to a numerical control device that controls a machine tool.
- An object of the present disclosure is to provide a numerical control device that can reduce the burden of creating a machining program in which a plurality of command value sets are arranged in one block.
- the numerical control device receives a first command including a numerical value that defines an axis operation, a second command including any one of a preparation function command, a speed command, a spindle rotation command, a tool change command, and an auxiliary command; a command analysis unit that analyzes a machining program that includes a third command that defines the execution timing of the command in one block; and a command information generation unit that generates command information of the second command.
- FIG. 2 is a block diagram showing an example of a hardware configuration of a numerical control device. It is a block diagram showing an example of the function of a numerical control device. It is a figure showing an example of a processing program.
- FIG. 3 is a diagram showing an example of execution timing of a speed command.
- 2 is a flowchart illustrating an example of the flow of processing executed by the numerical control device. It is a figure showing an example of a processing program.
- FIG. 7 is a diagram illustrating the operation of the control axes when the machining program shown in FIG. 6 is executed. It is a figure showing an example of a processing program. It is a figure showing an example of a processing program. It is a figure showing an example of a processing program. It is a figure showing an example of a processing program.
- FIG. 12 is a diagram illustrating the operation of a control axis and a coolant when the machining program shown in FIG. 11 is executed. It is a figure showing an example of a processing program.
- FIG. 1 is a block diagram showing an example of the hardware configuration of a machine tool equipped with a numerical control device.
- the machine tool 1 includes a lathe, a machining center, and a multi-tasking machine.
- the machine tool 1 may include a wire electrical discharge machine.
- the machine tool 1 includes a numerical control device 2, an input/output device 3, a servo amplifier 4 and a servo motor 5, a spindle amplifier 6 and a spindle motor 7, and an auxiliary device 8.
- the numerical control device 2 is a device that controls the entire machine tool 1.
- the numerical control device 2 includes a hardware processor 201 , a bus 202 , a ROM (Read Only Memory) 203 , a RAM (Random Access Memory) 204 , and a nonvolatile memory 205 .
- the hardware processor 201 is a processor that controls the entire numerical control device 2 according to a system program.
- the hardware processor 201 reads a system program stored in the ROM 203 via the bus 202, and performs various processes based on the system program. Further, the hardware processor 201 controls the servo motor 5 and the spindle motor 7 based on the machining program.
- the hardware processor 201 is, for example, a CPU (Central Processing Unit) or an electronic circuit.
- the hardware processor 201 performs, for example, analysis of a machining program and output of control commands to the servo motor 5 and spindle motor 7 in each control cycle.
- the bus 202 is a communication path that connects each piece of hardware within the numerical control device 2 to each other. Each piece of hardware within the numerical control device 2 exchanges data via a bus 202.
- the ROM 203 is a storage device that stores system programs and the like for controlling the entire numerical control device 2.
- ROM 203 is a computer readable storage medium.
- the RAM 204 is a storage device that temporarily stores various data.
- the RAM 204 functions as a work area for the hardware processor 201 to process various data.
- the nonvolatile memory 205 is a storage device that retains data even when the machine tool 1 is powered off and the numerical control device 2 is not supplied with power.
- Nonvolatile memory 205 stores, for example, machining programs and various parameters.
- Non-volatile memory 205 is a computer readable storage medium.
- the nonvolatile memory 205 is configured with, for example, an SSD (Solid State Drive).
- the numerical control device 2 further includes an interface 206, an axis control circuit 207, a spindle control circuit 208, a PLC (Programmable Logic Controller) 209, and an I/O unit 210.
- an interface 206 an interface 206, an axis control circuit 207, a spindle control circuit 208, a PLC (Programmable Logic Controller) 209, and an I/O unit 210.
- PLC Programmable Logic Controller
- the interface 206 connects the bus 202 and the input/output device 3.
- the interface 206 sends various data processed by the hardware processor 201 to the input/output device 3, for example.
- the input/output device 3 is a device that receives various data via the interface 206 and displays the various data. The input/output device 3 also receives input of various data and sends the various data to the hardware processor 201 via the interface 206.
- the input/output device 3 is, for example, a touch panel.
- the touch panel is, for example, a capacitive touch panel. Note that the touch panel is not limited to a capacitive type, and may be a touch panel of another type.
- the input/output device 3 is attached to, for example, an operation panel (not shown) in which the numerical control device 2 is stored.
- the axis control circuit 207 is a circuit that controls the servo motor 5.
- the axis control circuit 207 receives a control command from the hardware processor 201 and outputs a command for driving the servo motor 5 to the servo amplifier 4.
- the axis control circuit 207 sends a torque command for controlling the torque of the servo motor 5 to the servo amplifier 4, for example.
- the servo amplifier 4 receives a command from the axis control circuit 207 and supplies current to the servo motor 5.
- the servo motor 5 is driven by receiving current from the servo amplifier 4.
- the servo motor 5 is connected to, for example, a ball screw that drives a tool post.
- structures of the machine tool 1, such as a tool rest move in, for example, the X-axis direction, the Y-axis direction, or the Z-axis direction.
- the servo motor 5 may have a built-in speed detector (not shown) that detects the feed speed of each feed axis.
- the spindle control circuit 208 is a circuit for controlling the spindle motor 7.
- the spindle control circuit 208 receives a control command from the hardware processor 201 and outputs a command for driving the spindle motor 7 to the spindle amplifier 6.
- the spindle control circuit 208 sends a torque command for controlling the torque of the spindle motor 7 to the spindle amplifier 6, for example.
- the spindle amplifier 6 receives a command from the spindle control circuit 208 and supplies current to the spindle motor 7.
- the spindle motor 7 is driven by receiving current from the spindle amplifier 6.
- the spindle motor 7 is connected to the main shaft and rotates the main shaft.
- the PLC 209 is a device that executes a ladder program to control the auxiliary equipment 8. PLC 209 sends commands to auxiliary equipment 8 via I/O unit 210.
- the I/O unit 210 is an interface that connects the PLC 209 and the auxiliary equipment 8. I/O unit 210 sends the command received from PLC 209 to auxiliary equipment 8.
- the auxiliary equipment 8 is installed in the machine tool 1 and is a device that performs auxiliary operations in the machine tool 1. Auxiliary equipment 8 operates based on commands received from I/O unit 210. The auxiliary equipment 8 may be equipment installed around the machine tool 1.
- the auxiliary equipment 8 is, for example, a tool changer, a cutting fluid injection device, or an opening/closing door drive device.
- FIG. 2 is a block diagram showing an example of the functions of the numerical control device 2.
- the numerical control device 2 includes a machining program storage section 21, a command analysis section 22, a command information generation section 23, and a control section 24.
- the machining program storage unit 21 is realized, for example, by storing a machining program input from the input/output device 3 in the RAM 204 or the nonvolatile memory 205.
- the command analysis unit 22, the command information generation unit 23, and the control unit 24 are configured such that, for example, the hardware processor 201 performs arithmetic processing using the system program stored in the ROM 203 and various data stored in the nonvolatile memory 205. This is achieved by
- the machining program storage unit 21 stores a machining program used for machining a workpiece.
- FIG. 3 is a diagram showing an example of a machining program.
- a machining program includes, for example, one block that includes multiple instructions.
- One block means one line of the machining program. That is, the row with sequence number N100 of the machining program shown in FIG. 3 is one block. Further, the row with sequence number N101 is one block.
- the plurality of commands include a first command, a second command, and a third command.
- the first command includes, for example, a numerical value that defines the axis movement.
- Axis operation is an operation in which a control axis moves or stops along an axis such as the X-axis or Y-axis.
- Axis operation includes waiting without moving the control axis, that is, maintaining a stopped state.
- the numerical value that defines the axis movement is, for example, a coordinate value in a predetermined coordinate system.
- coordinate values "X150.Y140.” in a predetermined coordinate system are designated as the first command for the block with sequence number N101.
- the predetermined coordinate system is, for example, the machine coordinate system of the machine tool 1 or the workpiece coordinate system.
- the numerical value that defines the axis movement may be the amount of movement of the axis in a predetermined coordinate system.
- the numerical value that defines the axis motion may be an execution time. An example in which the numerical value that defines the axis motion is the execution time will be described in detail later.
- the second command includes any one of a preparation function command, a speed command, a spindle rotation command, a tool exchange command, and an auxiliary command.
- the preparation function command is a command to perform internal settings of the numerical control device 2 in preparation for machining.
- the preparation function commands are, for example, commands using G codes such as G00, G01, G02, G03, and G04. Note that G00 is a positioning command, G01 is a linear interpolation command, G02 is a circular interpolation command that draws a clockwise arc, G03 is a circular interpolation command that draws a counterclockwise arc, and G04 is a dwell command.
- the speed command is a command that specifies the feed speed when the control axis moves by cutting feed.
- the speed command is designated by an F code.
- speed commands "600,” “500,” and "400" are designated by the F code.
- the spindle rotation command is a command that specifies the rotation speed of the spindle.
- the spindle rotation command is specified by an S code.
- the tool exchange command is a command for exchanging tools.
- the tool change command is designated by a T code.
- Auxiliary commands are commands for executing functions other than control axis operations. Auxiliary commands are designated by M codes.
- the third command is a command that defines the execution timing of the second command.
- the execution timing is the time when the second command becomes effective, or the period during which the second command becomes effective.
- the third command includes any one of a numerical value indicating the position, a numerical value indicating the operating distance, a numerical value indicating the operating time, a numerical value indicating the ratio of operating distances, and a numerical value indicating the ratio of operating times in the axis operation.
- the third commands are numerical values "1", “3", and “1” indicating the ratio of operating distances, respectively. is specified. That is, the third command specifies the period during which the second command is valid by a numerical value indicating the ratio of operating distances. "1", “3", and “1” may not be the ratio of operating distances but may be the ratio of operating times of the control axes. Furthermore, whether the third command is a ratio of operating distances or operating times may be set in advance using a predetermined parameter. Furthermore, in order to clearly specify that the second command is a ratio of operating distances, a command such as "RATIO_LENGTH" may be specified in the machining program.
- the numerical value indicating the position, the numerical value indicating the operating distance, the numerical value indicating the operating time, and the numerical value indicating the ratio of operating times are respectively specified by, for example, POS ⁇ X ⁇ , LENGTH ⁇ X ⁇ , TIME, and RATIO_TIME. You may also do so.
- the third command may be specified by a composite distance LENGTH that does not specify the axial direction.
- the command analysis unit 22 receives a first command that includes a numerical value that defines an axis operation, a second command that includes any one of a preparation function command, a speed command, a spindle rotation command, a tool change command, and an auxiliary command.
- a machining program including a third command that defines the execution timing of the second command in one block is analyzed.
- the command analysis unit 22 reads the machining program stored in the machining program storage unit 21 and analyzes each command included in each block of the machining program.
- the command analysis unit 22 reads and analyzes each command specified in the machining program block by block.
- the command analysis unit 22 may read ahead and analyze the commands of each block sequentially.
- the command analysis unit 22 interprets the command of this block as a command to move the control axis to the positions of X100 and Y100 in fast forward motion.
- the command analysis unit 22 interprets the command of this block as moving the control axis from the positions X100 and Y100 to the positions X150 and Y140 by cutting feed. Further, the command analysis unit 22 interprets that the control axis is to be moved at a feed rate of 600 [mm/min] in the first 1/5 distance between the positions of X100 and Y100 and the positions of X150 and Y140. . Further, the command analysis unit 22 interprets that the control axis is to be moved in the next 3/5 distance section at a feed rate of 500 [mm/min]. Further, the command analysis unit 22 interprets that the control axis is moved in the last 1/5 distance section at a feed rate of 400 [mm/min].
- the command information generation unit 23 generates command information for the second command based on the first command and the third command analyzed by the command analysis unit 22.
- FIG. 4 is a diagram showing an example of the execution timing of the speed command. Specifically, FIG. 4 is a graph showing the execution timing of the speed command when the machining program shown in FIG. 3 is executed.
- Command information for moving the control axis at a feed rate of 600 [mm/min] is generated.
- the command information generation unit 23 generates command information for performing cutting feed by linear interpolation from the positions X100 and Y100 toward the positions X110 and Y108 at a feed rate of 600 [mm/min].
- the command information generating unit 23 also generates command information for moving the control axis at a feed rate of 500 [mm/min] in the next 3/5 distance section between the positions X100 and Y100 and the positions X150 and Y140. generate. In other words, the command information generation unit 23 generates command information for performing cutting feed by linear interpolation from the positions X110 and Y108 toward the positions X140 and Y132 at a feed rate of 500 [mm/min].
- the command information generation unit 23 also generates command information for moving the control axis at a feed rate of 400 [mm/min] in the last 1/5 distance section between the positions X100 and Y100 and the positions X150 and Y140. generate. In other words, command information for performing cutting feed by linear interpolation from the positions X140 and Y132 toward the positions X150 and Y140 at a feed rate of 400 [mm/min] is generated.
- the command information generation unit 23 determines that there are two sections in which the control axis operates at a feed rate of 600 [mm/min] and a section in which the feed rate operates at a feed rate of 500 [mm/min].
- a control command is generated so that the ratio of the operating distance between the section and the section in which the section operates at a feed rate of 400 [mm/min] is 1:3:1.
- the control unit 24 controls each part of the machine tool 1 based on the command information generated by the command information generation unit 23.
- the control unit 24 controls the operation of the spindle head, the tool rest, etc. by controlling control axes such as the X-axis, Y-axis, and Z-axis, for example.
- the numerical control device 2 can cause the machine tool 1 to process the workpiece.
- FIG. 5 is a flowchart showing an example of the flow of processing executed by the numerical control device 2.
- the command analysis unit 22 reads the machining program stored in the machining program storage unit 21 (step S1).
- the command analysis unit 22 analyzes the commands of the read machining program and interprets each command (step S2).
- the command information generation unit 23 generates command information based on each command of the machining program interpreted by the command analysis unit 22 (step S3).
- control unit 24 controls each part of the machine tool 1 based on the command information generated by the command information generation unit 23 (step S4), and the process ends.
- the numerical control device 2 has a first command that includes a numerical value that defines axis operation, and a first command that includes any one of a preparation function command, a speed command, a spindle rotation command, a tool change command, and an auxiliary command.
- a command analysis unit 22 that analyzes a machining program that includes the second command and a third command that defines the execution timing of the second command in one block, and the first command analyzed by the command analysis unit 22 and It includes a command information generation unit 23 that generates command information of the second command based on the third command.
- the numerical control device 2 can generate command information based on a machining program that includes the first command, the second command, and the third command in one block. In other words, the numerical control device 2 can reduce the burden of creating a machining program in which a plurality of sets of command values are arranged in one block.
- the numerical value that defines the axis operation includes any one of the coordinate value, the amount of movement, and the execution time.
- the third command includes any one of a numerical value indicating a position, a numerical value indicating an operating distance, a numerical value indicating an operating time, a numerical value indicating a ratio of operating distances, and a numerical value indicating a ratio of operating times in axis operation. . That is, the numerical control device 2 can generate command information based on various types of third commands. As a result, the operator can create a machining program to be executed by the numerical control device 2 in accordance with the operation mode of the control axes. In other words, the numerical control device 2 can reduce the burden on the operator in creating programs.
- the second command is only a speed command, that is, the second command is one type of command.
- the second command may include multiple types of commands.
- FIG. 6 is a diagram showing an example of a machining program.
- FIG. 7 is a diagram illustrating the operation of the control axes when the machining program shown in FIG. 6 is executed.
- "G90 G00 Z50.” is designated for the block with sequence number N200.
- G90 is an absolute command. Under an absolute command, axis operations are performed based on coordinate values in a set coordinate system. Therefore, the command analysis unit 22 converts the command specified by the block with sequence number N200 into Z50. It is interpreted as a command to move the control axis in rapid traverse to the position.
- G00 is a modal command.
- a modal command is a command that is not invalidated until another G code belonging to one group is commanded.
- G00, G01, G02, G03, and G04 are commands belonging to one group. That is, when G00 is specified in one block, G00 is valid until another command such as G01 is specified in another block following the first block.
- the command analysis unit 22 interprets the command specified in the block with sequence number N201 as a command to move the control axis in fast forward motion to the positions X100 and Y100.
- the addresses “G, F” and the numbers shown in the center and on the right side of each square bracket are the second commands, respectively. That is, "400” and "200" specified within the middle square bracket and the right square bracket are respectively second commands. Note that since it is assumed that G00 is specified within the square brackets on the left, the specification of the numerical value corresponding to address F is omitted.
- G codes such as G00 and G01 are modal commands. Therefore, the central numerical value between the left and right square brackets is omitted.
- the "9", “6”, and “1" specified within the left square bracket, middle square bracket, and right square bracket are respectively the third directive specified for the second directive.
- the third command is a numerical value indicating the ratio of operating distances.
- the command analysis unit 22 interprets the command specified by the sequence number N202 as a command to move the control axis in rapid traverse over the first 9/16 distance between the Z50 position and the Z-30 position. Interpret that there is. Further, the command analysis unit 22 interprets the command to move the next 6/16 distance section between the position Z50 and the position Z-30 at a feed rate of 400 [mm/min]. Additionally, the command analysis unit 22 interprets this as a command to move the control axis in the last 1/16 distance section between the Z50 position and the Z-30 position at a feed rate of 200 [mm/min]. do.
- the command information generation unit 23 When the command specified by sequence number N202 is analyzed, the command information generation unit 23 generates a command to move the control axis from the Z50 position to the Z5 position in fast forward motion. Further, the command information generation unit 23 generates command information for cutting and feeding the control axis from the position Z5 to the position Z-25 at a feed rate of 400 [mm/min]. Further, the command information generation unit 23 generates command information for cutting and feeding the control axis from the position Z-25 to the position Z-30 at a feed rate of 200 [mm/min].
- the addresses “G, F” and the numbers shown in the center and on the right side of each square bracket are the second commands, respectively. That is, "400” and "00” specified within the left square bracket, the middle square bracket, and the right square bracket are respectively second commands.
- G codes such as G00 and G01 are modal commands. Therefore, the middle numbers in the left and middle square brackets and the right numbers in the left square brackets are omitted.
- the "1", “6”, and “9" specified within the left square bracket, middle square bracket, and right square bracket are respectively the third directive specified for the second directive.
- the third command is a numerical value indicating the ratio of operating distances.
- the command analysis unit 22 executes the command specified by the sequence number N203 at a feed rate of 200 [mm/min] for the first 1/16 distance between the Z-30 position and the Z50 position. It is interpreted as a command to move the control axis. Additionally, the command analysis unit 22 interprets it as a command to move the control axis at a feed rate of 400 [mm/min] in the next 6/16 distance section between the Z-25 position and the Z5 position. do. The command analysis unit 22 interprets this as a command to fast forward the last 9/16 distance between the Z5 position and the Z50 position.
- the command information generation unit 23 When the command specified by sequence number N203 is analyzed, the command information generation unit 23 generates command information for cutting and feeding the control axis from position Z-30 to position Z-25 at a feed rate of 200 [mm/min]. generate. In addition, the command information generation unit 23 generates command information to feed the control axis for cutting from the position Z-25 to the position Z5 at a feed rate of 400 [mm/min]. The command information generation unit 23 also generates command information for moving the control axis from the Z5 position to the Z50 position in fast forward motion.
- X110 is specified for the block with sequence number N204. Therefore, the command analysis unit 22 interprets the command designated by the sequence number N204 as moving the control axis in fast forward motion to the position X110.
- the command information generation unit 23 generates command information for rapidly forwarding the control axis from the position X100 to the position X110.
- the command analysis unit 22 may analyze a machining program that includes a plurality of types of second commands in one block.
- the machining program is simplified, and the burden on the operator in creating the machining program can be reduced.
- the third command is a numerical value indicating the ratio of operating distances in axis motion.
- the third command may be a numerical value indicating the position.
- the numerical value indicating the position is, for example, a coordinate value.
- FIG. 8 is a diagram showing an example of a machining program.
- the command analysis unit 22 interprets the command specified by the block with the sequence number N300 as a command to move the control axis in rapid traverse to the positions X100 and Y100.
- the command analysis unit 22 converts the command specified by the sequence number N301 into a command to move the control axis in the first section between the positions of X100 and Y100 and the positions of X150 and Y140 at a feed rate of 600 [mm/min]. It is interpreted that Here, the first section is the section from the position X100 to the position X110. Moreover, at the position of X110, it is Y108.
- the command analysis unit 22 uses the command specified by the sequence number N301 to move the control axis in the next section between the positions of X100 and Y100 and the positions of X150 and Y140 at a feed rate of 500 [mm/min]. This is interpreted as a command to
- the next section is the section from the position of X110 to the position of X140.
- the position of X140 it is Y132.
- the command analysis unit 22 uses the command specified by the sequence number N301 to move the control axis at a feed rate of 400 [mm/min] in the last section between the positions of X100 and Y100 and the positions of X150 and Y140. This is interpreted as a command to Here, the last section is the section from the X140 position to the X150 position. Moreover, at the position of X150, it is Y140.
- the command analysis unit 22 may analyze a machining program in which the third command is specified by a numerical value indicating a position.
- the machining program is simplified, and the burden on the operator in creating the machining program can be reduced.
- the third command using a numerical value indicating the position, the coordinates at which the control axis reaches are made clear. Further, it becomes possible to omit specification of a part of the third command. Furthermore, it becomes possible to specify the third command for some control axes.
- the third command is a numerical value indicating the position in the axis movement.
- the third command may be a numerical value indicating the operating distance.
- FIG. 9 is a diagram showing an example of a machining program.
- the command analysis unit 22 interprets the command specified by the block with the sequence number N400 as a command to move the control axis in fast forward motion to the positions X100 and Y100.
- the command analysis unit 22 determines that the command specified by the sequence number N401 is a command to move the first section between the positions of X100 and Y100 and the positions of X150 and Y140 at a feed rate of 600 [mm/min].
- the first section is the section between the position X100 and a position 10 away from the position X100 in the X-axis direction. That is, it is the section between the position of X100 and the position of X110. Note that the position of X110 is Y108.
- the command analysis unit 22 determines that the command specified by the sequence number N401 is a command to move the next section between the positions of X100 and Y100 and X150 and Y140 at a feed rate of 500 [mm/min].
- the next section is a section between the position X110 and a position 30 away from the position X110 in the X-axis direction. That is, it is the section between the position of X110 and the position of X140.
- the position of X140 is Y132.
- the command analysis unit 22 uses the command specified by the sequence number N401 as a command to move the last section between the positions of X100 and Y100 and the positions of X150 and Y140 at a feed rate of 400 [mm/min].
- the last section is the section between the position of X140 and the position of X150.
- the position of X150 is Y140.
- the command analysis unit 22 may analyze a machining program in which the third command is specified by a numerical value indicating the operating distance.
- the machining program is simplified, and the burden on the operator in creating the machining program can be reduced.
- the third command is a numerical value indicating the operating distance.
- the second command may be a spindle rotation command, and the third command may be a numerical value indicating the operating time.
- FIG. 10 is a diagram showing an example of a machining program.
- the command analysis unit 22 interprets the command specified in the block with the sequence number N500 as a command to move the control axis in rapid traverse to the position Z100.
- the address "S" and the number shown to the right within each square bracket are each the second command. That is, "0" and "1000" specified within the square brackets on the left and the square brackets on the right are respectively second commands.
- the command analysis unit 22 rotates the command specified by the sequence number N501 at a rotational speed of the main shaft of 0 [rev/min] from the position Z100 to 100 [ms] before the control axis reaches the position Z0. Interpret it as a directive. In other words, the command analysis unit 22 interprets that the rotation of the main shaft during this period is to be stopped.
- the command analysis unit 22 analyzes the command specified by the sequence number N501 from Z0. This is interpreted as a command to rotate the main shaft at a rotation speed of 1000 [rev/min] until it reaches the position.
- the command analysis unit 22 interprets the command specified in the block with sequence number N502 as a command to move the control axis to the position Z-10 at a feed rate of 300 [mm/min].
- the command analysis unit 22 interprets the command specified in the block with sequence number N503 as a command to move the control axis to the position Z0 at a feed rate of 300 [mm/min].
- the address “S” and the number shown to the right within each square bracket are each the second command. That is, "0" and "1000" specified within the square brackets on the left and the square brackets on the right are respectively second commands.
- the command analysis unit 22 rotates the command specified by the sequence number N504 at a rotation speed of the main shaft of 0 [rev/min] from the Z0 position to 100 [ms] before the control axis reaches the Z50 position. Interpret it as That is, the command analysis unit 22 interprets that the rotation of the main shaft is stopped during this period.
- the command analysis unit 22 analyzes the command specified by the sequence number N504 by calculating the rotation speed of the main shaft from 100 [ms] before the control axis reaches the Z50 position from the Z0 position until the control axis reaches the Z50 position. This is interpreted as a command to rotate at 1000 [rev/min].
- the command analysis unit 22 may analyze a machining program in which the second command is a spindle rotation command and the third command is specified by a numerical value indicating the operation time.
- the machining program is simplified, and the burden on the operator in creating the machining program can be reduced.
- the second command is a spindle rotation command.
- the second command may be an auxiliary command.
- FIG. 11 is a diagram showing an example of a machining program.
- FIG. 12 is a diagram illustrating the operation of the control shaft and coolant when the machining program shown in FIG. 11 is executed.
- "G00 X100. Y100.” is specified for the block with sequence number N600.
- the command analysis unit 22 interprets the command specified by the block with sequence number N600 as a command to move the control axis in fast forward motion to the positions X100 and Y100.
- the address "M” and the numbers shown in the center and to the right of each square bracket are the second commands, respectively. That is, “8, 19", “9, 18", and “8, 19” specified within the left square bracket, the middle square bracket, and the right square bracket are respectively second commands.
- the "1", "3”, and “1" specified within the left square bracket, middle square bracket, and right square bracket are respectively the third directive specified for the second directive.
- the third command is, for example, a numerical value indicating the ratio of operating distances.
- the command analysis unit 22 processes the command specified by the sequence number N601 while the control axis moves through the first 1/5 distance between the X100 and Y100 positions and the X150 and Y140 positions. It is interpreted that the commands M8 and M19 are valid.
- command analysis unit 22 executes the command specified by the sequence number N601 while the control axis moves in the next 3/5 distance section between the positions of X100 and Y100 and the positions of X150 and Y140. It is interpreted that the commands M9 and M18 are valid.
- command analysis unit 22 executes the command specified by the sequence number N601 while the control axis moves through the last 1/5 distance between the positions of X100 and Y100 and the positions of X150 and Y140. It is interpreted that the commands M8 and M19 are valid.
- M8 and M18 are commands to turn on the first coolant system and the second coolant system, respectively, in the machine tool 1 equipped with two coolant systems.
- M9 and M19 are commands for turning off the first coolant system and the second coolant system, respectively, in the machine tool 1 equipped with two coolant systems.
- the control shaft moves through the first section, for example, the first system coolant system is in the on state, and the second system coolant system is in the off state. Further, while the control shaft moves through the next section, the first system coolant system is in the OFF state, and the second system coolant system is in the ON state. Further, while the control shaft moves through the final section, the first system coolant system is in the on state, and the second system coolant system is in the off state.
- the command analysis unit 22 may analyze a machining program in which the second command is specified by an auxiliary command, particularly a command to turn on or turn off the coolant.
- the coolant can be turned on or off depending on the contact position between the tool and the workpiece when the tool cuts the workpiece.
- the machining program is simplified, and the burden on the operator in creating the machining program can be reduced.
- the first command is a coordinate value or a numerical value indicating the amount of movement.
- the first command is not limited to these, and may include a numerical value indicating the execution time.
- FIG. 13 is a diagram showing an example of a machining program.
- the command analysis unit 22 interprets the command specified by the block with the sequence number N700 as a command to move the control axis in rapid traverse to the position Z100.
- the address "S” and the number shown to the right within each square bracket are each the second command. That is, "1000" and "1500” specified within the square brackets on the left and the square brackets on the right are respectively second commands.
- the command analysis unit 22 executes the command specified by the sequence number N701 to rotate the main axis at 1000 [rev/min] during the first 500 [ms] of the 1000 [ms] during which the X-axis operation stops. Interpret it as Further, the command analysis unit 22 interprets that the main shaft is rotated at 1500 [rev/min] during the remaining 500 [ms].
- the command analysis unit 22 may analyze a machining program that includes a first command specified by a numerical value indicating the execution time.
- the machining program is simplified, and the burden on the operator in creating the machining program can be reduced.
- Machine tool 2 Numerical control device 201 Hardware processor 202 Bus 203 ROM 204 RAM 205 Non-volatile memory 206 Interface 207 Axis control circuit 208 Spindle control circuit 209 PLC 210 I/O unit 21 Machining program storage section 22 Command analysis section 23 Command information generation section 24 Control section 3 Input/output device 4 Servo amplifier 5 Servo motor 6 Spindle amplifier 7 Spindle motor 8 Auxiliary equipment
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Abstract
Description
シーケンス番号N301のブロックでは、「G01 X150.,Y140.,POS{X},F=[110.,600],[140.,500],[ ,400]」が指定されている。このうち、「X150.,Y140.」が第1の指令である。
「POS{X},F=[110.,600],[140.,500],[ ,400]」は、第2の指令と第3の指令とが組み合わされた指令である。アドレス「F」、ならびに、各々の角括弧内の右側に示される数値がそれぞれ、第2の指令である。つまり、左側の角括弧、中央の角括弧、および右側の角括弧内で指定された「600」、「500」、「400」がそれぞれ第2の指令である。
指令解析部22は、シーケンス番号N301で指定された指令を、X100、Y100の位置とX150、Y140の位置との間の最初の区間を送り速度600[mm/min]で制御軸を移動させる指令であると解釈する。ここで、最初の区間とは、X100の位置からX110の位置までの区間である。また、X110の位置ではY108である。
シーケンス番号N401のブロックでは、「G01 X150.,Y140.,LENGTH{X},F=[10.,600],[30.,500],[ ,400]」が指定されている。このうち、「X150.,Y140.」が第1の指令である。
「LENGTH{X},F=[10.,600],[30.,500],[ ,400]」は、第2の指令と第3の指令とが組み合わされた指令である。アドレス「F」、ならびに、各々の角括弧内の右側に示される数値がそれぞれ、第2の指令である。つまり、左側の角括弧、中央の角括弧、および右側の角括弧内で指定された「600」、「500」、「400」がそれぞれ第2の指令である。
以上説明したように、指令解析部22は、第2の指令が補助指令、特に、クーラントをオン状態にする指令、またはオフ状態にする指令によって指定された加工プログラムを解析してもよい。この場合、工具がワークを切削するときの工具とワークとの接触位置に合わせて、クーラントをオン状態、またはオフ状態にすることができる。また、加工プログラムが簡略化され、作業者による加工プログラム作成の負担を軽減することができる。
2 数値制御装置
201 ハードウェアプロセッサ
202 バス
203 ROM
204 RAM
205 不揮発性メモリ
206 インタフェース
207 軸制御回路
208 スピンドル制御回路
209 PLC
210 I/Oユニット
21 加工プログラム記憶部
22 指令解析部
23 指令情報生成部
24 制御部
3 入出力装置
4 サーボアンプ
5 サーボモータ
6 スピンドルアンプ
7 スピンドルモータ
8 補助機器
Claims (3)
- 軸動作を規定する数値を含む第1の指令と、準備機能指令、速度指令、主軸回転指令、工具交換指令、および補助指令のいずれかを含む第2の指令と、前記第2の指令の実行タイミングを規定する第3の指令とを1つのブロックに含む加工プログラムを解析する指令解析部と、
前記指令解析部によって解析された前記第1の指令および前記第3の指令に基づいて、前記第2の指令の指令情報を生成する指令情報生成部と、
を備える数値制御装置。 - 前記軸動作を規定する数値は、座標値、移動量および実行時間のいずれかを含む請求項1に記載の数値制御装置。
- 前記第3の指令は、前記軸動作における、位置を示す数値、動作距離を示す数値、動作時間を示す数値、動作距離の比を示す数値、および動作時間の比を示す数値のいずれかを含む請求項1または2に記載の数値制御装置。
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CN202180099863.7A CN117561484A (zh) | 2021-07-01 | 2021-07-01 | 数值控制装置 |
US18/568,962 US20240272619A1 (en) | 2021-07-01 | 2021-07-01 | Numerical control device |
JP2023531303A JPWO2023276121A1 (ja) | 2021-07-01 | 2021-07-01 | |
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JPS57201903A (en) * | 1981-01-20 | 1982-12-10 | Okuma Mach Works Ltd | Plural operation sequence generating system in numerical control device |
JPH05134722A (ja) * | 1991-11-11 | 1993-06-01 | Hitachi Seiko Ltd | 数値制御工作機械の制御方法 |
JPH05204421A (ja) * | 1992-01-30 | 1993-08-13 | Fanuc Ltd | Ncプログラム処理方法 |
JPH08161022A (ja) * | 1994-12-07 | 1996-06-21 | Fanuc Ltd | Cncの多系統待ち合わせ方式 |
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