JPH10149212A - Numerical controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the cycle time of machining including a conditional jump and to easily generate a machining program including the conditional jump by changing an execution point of a searched block and instructing a program analysis of this block. SOLUTION: A program analyzing means 11 requests a program jump command analyzing means 15 to analyzes a program jump command. The program jump command analyzing means 15 analyzes the program jump command and sets the analysis result in a memory 20. A jump destination search means 12 searches for a jump destination label number according to the analysis result of the program jump command analyzing means 15. A jump executing means 14 changes the program execution pointer to a block wherein the jump destination label number searched for by the jump destination search means 12 is described and instructs the program analyzing means 11 to analyze the program commands in this block.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical controller, and more particularly to a method for easily creating a machining program and a shortening of a cycle time of a machining cycle.

[0002]

2. Description of the Related Art A numerical controller executes a numerical control process based on a processing program instructed from a paper tape or the like.
The machine tool is driven based on the processing result to perform the processing on the work as instructed.

FIG. 11 is a main block diagram showing an outline of a numerical control device. Numeral 1 denotes a numerical control device. The numerical control device 1 includes a machining program analysis processing unit 10, an interpolation processing unit 30, a machine control signal processing unit 50, a ladder circuit 55, an axis control unit 60, Moving amount input / output circuit 70
, A memory 20, a parameter setting unit 21, and a screen display unit 22. Further, between the numerical controller 1 and the servomotor 90, there is a servo amplifier 80 for analyzing a command from the numerical controller 1 and controlling the servomotor 90. Although not shown in the figure, the servomotor 90 has a pulse generator for position detection, and the servo amplifier 80 has a position loop based on a position feedback signal from the pulse generator.

In this numerical controller, a processing program is stored in a memory 20 using a communication device such as a tape reader. When executing the machining program, the machining program analysis processing unit 10 reads the machining program from the memory 20 one block at a time, and the read machining program is processed by the machining program analysis processing unit 10 to determine the end point position of each block. calculate. This end point position is determined by the interpolation processing unit 30.
And distributes the movement commands up to the end point position to the movement commands per unit time of each movable axis.

This movement command is converted into a movement command per unit time in consideration of acceleration / deceleration in accordance with an acceleration / deceleration pattern specified in advance by the axis control unit 60, and servo movement from the axis movement input / output circuit 70 to the servo amplifier 80. Output as a command.

In response to the servo movement command, the servo amplifier 80 gives a rotation command to a servomotor 90 mounted on a machine tool (not shown).

[0007] Further, machine signals such as on / off of the cutting oil are processed by a machine control signal processing unit 50 via a ladder circuit 55 for describing machine control, and the processing results are transmitted to an interpolation processing unit 30.

The axis setting relating to the basic constituent axes and the acceleration / deceleration time constant of each movable axis set by key input means (not shown) are processed by the parameter setting section 21 and stored in the memory 20.
Is stored in The parameters and the like stored in this way are displayed on a display (not shown) by the screen display processing unit 22, so that the contents of the parameters and the like can be confirmed.

Next, the operation of the program in the conventional numerical controller will be described with reference to the block diagram of FIG.
This will be described with reference to a machining program example 3. In a conventional numerical control device, when a specific section block is executed once every N times, it is necessary to create a program as shown in FIG. Here, the program in FIG.
When the third and subsequent steps are executed, p1 is executed again. In this program, the specific section block is a section (p
2). Also, the program IF [# 801
[LT4] GOTO100 represents a conditional statement and a label number of a jump destination. # 801 represents a variable,
In # 801, numerical values such as 1 and 2 are included. Here, the processing program analysis means 10 reads the numerical value of # 801 and compares it with the numerical value 4. If the numerical value is smaller than the numerical value 4, it is determined that the program jumps to the designated label, that is, N100 in this case, and the section (p3) Execute the following. In the section (p3), a program for adding 1 to the variable # 801 is being executed. This is executed by the machining program analysis processing unit 10. If the value is 4 or more, the section (P
Perform 2). Therefore, when this program is repeatedly executed, the section (p2) can be executed only once in five times. However, at the end of the section (p2),
An instruction to clear the variable # 801 is required.

In the example of the machining program shown in FIG. 13, first, the machining program analysis processing section 10 analyzes M88. Since M88 is a command to the ladder circuit unit 55, the machining program analysis processing unit 10 passes the analysis result of M88 to the ladder circuit unit 55 via the machine control signal processing unit 50. The ladder circuit unit 55 performs a condition determination such as the received analysis result and other mechanical conditions, and outputs an optional block skip valid signal to the machine control signal processing unit 50 if the determination is affirmative. The machine control signal processing unit 50 receives the optional block skip valid signal from the ladder circuit unit 55, and turns on the optional block skip valid flag in the interface with the machining program analysis processing unit 10. When the optional block skip valid flag is turned on, the machining program analysis processing unit 10
As shown in section 3 (p12), the block in which / is described is skipped. Therefore, if "/" is described at the beginning of each block in the section (p12), it is possible to cause the entire section (p12) to jump by the input of the optional block skip enable signal from the ladder circuit section 55.

[0011]

Conventionally, when performing control such that a specific section block is executed once every N times, FIG.
The user has to create a machining program as shown in FIG. 2, and the creation of the user program becomes troublesome.

Conventionally, a specific section block is added once every N times.
In the case of performing the control such that the processing is executed multiple times, a processing program as shown in FIG. 12 must be created, and a target operation cannot be performed unless a plurality of blocks are analyzed. The cycle time of the cycle becomes longer.

Conventionally, when skipping a specific section block by inputting an optional block skip valid signal from a ladder, it is necessary to write / at the beginning of all blocks in a specific section to be skipped as shown in FIG. Yes, creating a user program becomes cumbersome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and can reduce the cycle time of a machining cycle including a conditional jump as compared with the conventional art. It is an object of the present invention to obtain a numerical controller that is easy to use.

[0015]

A numerical controller according to the present invention comprises: a program jump command analyzing means for analyzing a program jump command; and a jump controller for incrementing or decrementing a jump counter until the jump counter reaches a command value. And a jump execution means for changing a program execution pointer to a block searched by the jump destination search means and instructing the program analysis means to perform a program analysis of the block. is there.

Further, the numerical controller according to the present invention comprises:
Program jump command analysis means for analyzing a program jump command, jump destination search means for searching for a jump destination until the jump counter reaches a command value by incrementing or decrementing the jump counter, and a jump invalid request from the ladder circuit A jump invalidation request signal detecting means for detecting a signal; and a jump invalidation request from the jump invalidation request signal detecting means, wherein a program execution pointer is moved from a jump destination block to a block next to a program jump instruction, and program analysis of the block is performed. And a jump executing means for instructing the program analyzing means to execute the program.

Further, the numerical controller according to the present invention comprises:
In the above numerical control device, a jump counter command value setting request signal detecting means for detecting a jump counter command value setting request signal from the ladder circuit, and a jump counter setting request from the jump counter command value setting request signal detecting means. And a jump counter command value setting means for setting a jump counter command value.

Further, the numerical controller according to the present invention comprises:
A program jump command analyzing means for analyzing a program jump command, a jump destination program number detecting means for detecting a designated program number, and a program execution pointer is changed to a first block of a program detected by the jump destination program number detecting means. And a jump executing means for instructing the program analyzing means to analyze the program of the block.

The numerical control device according to the present invention is the numerical control device described above, further comprising program nest level designating means for designating a program nest level and detecting a program number when detecting a designated program number. It is.

[0020]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the embodiments of the present invention described below, the same components as those of the above-described conventional example are denoted by the same reference numerals as those of the above-described conventional example, and description thereof will be omitted.

(Embodiment 1) FIG. 1 shows Embodiment 1 of a numerical controller according to the present invention.

This numerical control apparatus includes a machining program analysis processing unit 10 which includes a machining destination analyzing means 11, a jump counter command value setting means 13, a jump execution means 14, a jump execution means 14, Analysis means 15.

The program jump command analyzing means 15
The program jump command described in the machining program is analyzed.

The format of the program jump command is defined as, for example, "G148 Ln Qq". Here, n represents the number of jumps, and q represents the label number of the jump destination. As an operation, the machining program up to the block designated by q is executed once every number of times designated by n. Label number B is assigned to the jump destination block.
Use Nq. Here, n and q are each described by a positive integer. The program jump analysis means 15 analyzes the command and sets an analysis result in the memory 20.

For example, in a machining program as shown in FIG. 2, a program jump command "G148 L5 Q
This indicates that the section (p2) sandwiched between “10” and the jump destination label number “BN10” is executed once every five times.

The jump destination search means 12 searches for a jump destination label number BNq from the analysis result of the program jump command analysis means 15.

The jump counter command value setting means 13 comprises:
While the jump counter command value setting request flag (not shown) on the memory 20 set by the jump counter command value setting request signal detecting means 52 in the machine control signal processing unit 50 is on, the jump counter command value setting table 56 is received via the memory 20, and the program jump command “G148 Ln Qq” is received.
Is replaced with the set value set in the jump counter command value setting table 56.

For example, as shown in FIG. 3, when a jump counter command value setting request signal is input from the ladder circuit section 55, the jump counter command value is replaced with 3 to 2. Here, a case where n of the program counter command is 3 and the value of the jump counter command value setting table 56 requested by the ladder circuit unit 55 is 2 is shown.

The jump executing means 14 increments a jump counter (not shown) every time the machining program is repeatedly executed. If the jump counter is smaller than the jump counter command value, the execution pointer is changed to a block in which the jump destination label number searched by the jump destination search means 12 is described, and the machining program is analyzed so as to analyze the program command of the block. Notify the analyzing means 11. While the jump invalid request flag on the memory 20 set by the jump invalid request signal detecting means 52 in the machine control signal processing unit 50 is ON, the jump destination label number searched by the jump destination searching means 12 If the execution pointer has been changed to a block having the description, the execution pointer is interrupted, and the machining program analysis means 11 is notified to analyze the program command following the program jump command.

For example, once every five times as shown in FIG.
When the section (p2) from the program jump command block (G148) to the jump label number (BN10) is executed, even when the jump counter is smaller than the jump counter command value as shown in FIG. While the jump invalidation request signal is input and the jump invalidation request signal is on, the jump label number (B) is output from the program jump command block (G148).
The section (p2) up to N10) is executed. The jump counter is not updated while the jump invalidation request signal is on.

The machine control signal processing unit 50 includes, in addition to the machine control signal processing unit 51, a jump invalidation request signal detection unit 52 and a jump counter command value setting request signal detection unit 5
Three. The jump counter command value setting table 56 is stored in the machine control signal processing unit 50 and the ladder circuit unit 5.
5 is newly provided.

The jump counter command value setting request signal detecting means 53 includes a ladder circuit 55
When the jump counter command value setting request signal output to 0 is detected, the setting value of the jump counter command value setting table 56 set by the ladder circuit unit 55 is read, registered in the memory 20, and the jump counter command value setting on the memory 20 is set. Turn on the request flag.

When the jump invalidation request signal detecting means 52 detects the jump invalidation request signal output from the ladder circuit unit 55 to the machine control signal processing unit 50, the jump invalidation request flag on the memory 20 is turned on.

Next, a program jump operation in the numerical control device having the above-described configuration will be described with reference to the flowcharts shown in FIGS.

FIG. 5 shows an operation routine of the program jump. First, the program analysis means 11 analyzes a command described in the program. If the command is not a program jump command (No at step S1), the program analysis means 11 subsequently analyzes the next command described in the program (step S10). ). In the case of a program jump command (Yes at step S1), the program analyzing unit 11 requests the program jump command analyzing unit 15 to analyze this command.

The program jump command analyzing means 15 analyzes the program jump command, sets the number of jumps and the jump destination label number in the memory 20, and notifies the jump executing means 14 that the program jump command has been analyzed. Next, the jump executing means 14 checks the jump invalid request flag, and if it is off (No at Step S2), increments a jump counter on the memory 20 (not shown) (Step S3).

The jump invalidation request flag on the memory 20 is used to convert the jump invalidation request signal output from the ladder circuit unit 55 to the machine control signal processing unit 50 into the jump invalidation request signal detecting means 52 in the machine control signal processing unit 50. Detects and sets. If the jump invalidation request flag is in the ON state (Yes at step S2), the jump executing means 1
4 informs the program analyzing means 11 to analyze the next command described in the program.

In the step subsequent to step S3, the jump executing means 14 compares the incremented jump counter with the jump counter command value, and if the jump counter is smaller than the jump counter command value (step S4 affirmative), the jump destination. The search means 12 is notified to search for the jump destination label number. Upon receiving the notification from the jump execution means 14, the jump destination search means 12 starts prefetching the program, and repeats the prefetch until the character string of the designated jump destination label number is detected from the jump execution means 14 (step S5). ).

If the jump destination label number is not detected (step S6: No), the screen display processing unit 22 issues a request to display an alarm number and ends the processing (step S9). When the jump destination label number is detected (Yes at step S6), the program execution pointer of the detected jump destination label number is notified to the jump execution means 14. The jump execution means 14 replaces the current program execution pointer with the program execution pointer notified from the jump destination search means 12 and notifies the program analysis means 11. The program analysis means 11 analyzes the command according to the changed program execution pointer (step S7). If the jump counter is compared with the jump counter command value and the jump counter is equal to or larger than the jump counter command value (No at Step S4), the jump executing means 14 clears the jump counter (Step S8), and the program analysis means 11 Then, it is notified to analyze the next command described in the program.

FIG. 6 shows a jump counter command value changing routine. First, the ladder circuit section 55 determines a machine input signal or the like input from the outside, and when it becomes necessary to change the number of program jumps, inputs the changed value to the jump counter command value setting table 56, A jump counter command value setting request signal is output to the control signal processing unit 50.

The jump counter command value setting request signal detecting means 53 of the machine control signal processing section 50
When the jump counter command value setting request signal is detected (Yes at step S21), the jump counter command value setting request signal detecting means 53 reads the value set in the jump counter command value setting table 56 and stores the changed value in the memory 20. Write, the jump counter command value setting request flag on the memory 20 is turned on (step S2).
2). The jump counter command value setting means 13 detects the ON state of the jump counter command value setting request flag in the memory 20, reads the changed value from the memory 20, and substitutes it (step S23). When the jump counter command value setting request signal is not detected (No at Step S21), nothing is performed and the process ends.

(Embodiment 2) FIG. 7 shows a numerical control apparatus according to Embodiment 2 of the present invention.

This numerical control device includes a machining program analysis processing section 10, a program nest level designating section 16, a jump destination program number detecting section 17, a jump executing section 14, a jump executing section 14, a program jump command in addition to the machining program analyzing section 11. It has analysis means 15.

The program jump command analyzing means 15 analyzes a program jump command described in the machining program.

The format of the program jump command is defined, for example, as "G148 Ln Aa Bb".
Here, n represents the number of jumps, a represents the program number of the jump destination, and b represents the program nest level. The operation is performed up to the program number designated by a of the program nest level designated by b. The machining program in between is executed once for the number of times specified by n. The program jump analysis means 15 analyzes the command and sets an analysis result in the memory 20.

For example, in a machining program as shown in FIG. 8, a program jump command "G148 L5 A9
089 B-1 "is a section (p12) sandwiched between program numbers" O9089 "called at the nest level one level higher than the currently executed program nest level.
Is executed once every five times.

The program nesting level designating means 16 detects the designated program nesting level and notifies the result to the jump destination program number detecting means 17.

The jump destination program number detecting means 17 reads the jump destination program number analyzed by the program jump command analyzing means 15 from the memory 20, and the program nest level designating means 16 detects the program designated by the program nest level from the machining programs. Find the number.

Next, a program jump operation in the numerical control device having the above configuration will be described with reference to a flowchart shown in FIG. FIG. 9 shows a program jump operation routine for jumping to a specified program number of a specified program nest level. First, the program analysis means 11 analyzes a command described in the program. If the command is not a program jump command (No at step S31), the program analysis means 11 subsequently analyzes the next command described in the program (step S42). ).

In the case of a program jump command (Yes at step S31), the program analyzing means 11 requests the program jump command analyzing means 15 to analyze this command. The program jump command analyzing means 15 analyzes the program jump command, sets the number of jumps, the jump destination program number, and the program nest level in the memory 20, and notifies the jump executing means 14 that the program jump command has been analyzed. The jump executing means 14 receives the notification from the program jump command analyzing means 15 and increments a jump counter on the memory 20 (not shown) (step S33).

Next, the jump executing means 14 compares the jump counter incremented in step S33 with the jump counter command value, and when the jump counter is smaller than the jump counter command value (step S34).
Affirmative), the program nesting level designation means 16 is notified to determine the program nesting level at which the program number should be detected. Program nesting level specification means 1
6 receives the notification from the jump executing means 14 and reads out the analysis result of the program jump analyzing means 15 stored in the memory 20, and if the nest level is specified (Yes at Step S36), the designated program nest level Detect program number.

For example, if "B-1" is designated, the program number of the currently executed program is detected. At this time, if "B1" is designated, the program number called by the currently executing program is detected. If multiple programs are called, all the called program numbers are detected. The program nest level designating unit 16 notifies the jump destination program number detecting unit 17 of the detected result.

Jump destination program number detecting means 17
Reads out the program number stored in the memory 20 and analyzed by the program jump analysis unit 15, starts prefetching, analyzes the character string in the program number notified from the program nesting level designation unit 16, and executes, for example, "G65". The prefetching is repeated until a character string of a program number such as a subprogram call such as P8002 ″ is detected. Further, for example, when the auxiliary command for instructing the opening and closing of the chuck is configured to call a program, a program number designated by referring to a table registered in the memory 20 as shown in FIG. Is repeated until a character string is detected (step S3).
7).

If no nesting level is specified (No at step S36), the program number of the currently executing program nesting level is notified to the jump destination program number detecting means 17. Jump destination program number detecting means 1
7 reads out the program number stored in the memory 20 and analyzed by the program jump analysis means 15, starts prefetching, and analyzes the character string in the program number notified from the program nesting level designation means 16 in step S3.
7 is performed (step S38). If the designated program number is detected (Yes at Step S39),
The pointer of the program command at the head of the detected jump destination program number is notified to the jump execution means 14.

The jump execution means 14 replaces the pointer notified from the jump destination program number detection means 17 with the current program execution pointer and notifies the program analysis means 11. The program analysis means 11 analyzes the command according to the changed program execution pointer (step S40). If the specified program number is not searched (No at Step S39), a request to display an alarm number is issued through the screen display processing unit 22, and the process is terminated (Step S41).

If the jump counter is compared with the jump counter command value and the jump counter is equal to or greater than the jump counter command value (No at Step S34), the jump executing means 14 clears the jump counter (Step S35) and executes the program. Following the analysis means 11, a notification is sent to analyze the next command described in the program. The program analysis means 11 includes a jump execution means 14
The command next to the program jump command is analyzed based on the notification from (step S42).

Although the jump counter has been described as being incremented in the above embodiment, it goes without saying that the same effect can be obtained even if the jump counter is decremented.

[0058]

As described above, according to the first invention, conventionally, when performing control such that a specific section block is executed once every N times, a user describes a program over a plurality of blocks. However, it can be described in one block, user programs can be easily created, and
Since the program analysis requires only one block, the cycle time of the machining cycle including the conditional jump can be reduced.

According to the second aspect, the program jump can be stopped by an input signal from the machine. That is, the program jump can be stopped depending on the operation state of the machine.

Further, according to the third aspect, the number of program jumps can be changed by an input signal from the machine. That is, the number of program jumps can be changed depending on the operation state of the machine.

According to the fourth invention, conventionally, when a specific section block is skipped by inputting an optional block skip valid signal from a ladder, / is described at the beginning of all blocks in the specific section to be skipped. Where necessary, there is no need to describe /, and user programs can be easily created.

According to the fifth aspect, it is possible to jump to a program having a different call level (program nest level), thereby increasing the degree of freedom in using the program jump.

[Brief description of the drawings]

FIG. 1 is a main block diagram according to an embodiment of the present invention.

FIG. 2 is a diagram showing a description example of a machining program according to an embodiment of the present invention.

FIG. 3 is a timing chart illustrating operation timings according to an embodiment of the present invention.

FIG. 4 is a timing chart illustrating operation timings according to an embodiment of the present invention.

FIG. 5 is a flowchart showing a program jump operation according to an embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of changing a jump counter command value according to an embodiment of the present invention.

FIG. 7 is a block diagram of a main part according to an embodiment of the present invention.

FIG. 8 is a diagram showing a description example of a machining program according to an embodiment of the present invention.

FIG. 9 is a flowchart showing an operation of jumping a program to a designated program number according to an embodiment of the present invention.

FIG. 10 is a correspondence table between auxiliary commands and program numbers.

FIG. 11 is a block diagram of a main part of a conventional numerical control device.

FIG. 12 is a diagram showing a description example of a conventional machining program.

FIG. 13 is a diagram showing an example of a conventional machining program description.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Numerical control apparatus, 10 processing program analysis processing part, 11 processing program analysis means, 12 jump destination search means, 13 jump counter S command value setting means, 14 jump execution means, 15 program jump analysis means, 16 program nest level designation means , 17 jump destination program number detecting means, 20
Memory, 21 parameter setting unit, 22 screen display unit, 30 interpolation processing unit, 50 machine signal processing unit, 51
Machine signal processing means, 52 jump invalidation request signal detecting means, 52 jump invalidation request signal detecting means, 53
Jump counter command value setting request signal detecting means 55
Ladder circuit, 56 jump counter command value setting table, 60 axis controller, 70 data input / output circuit,
80 servo amplifier, 90 servo motor

Claims (5)

[Claims] 1. A program jump command analyzing means for analyzing a program jump command, a jump destination search means for searching for a jump destination until the jump counter reaches a command value by incrementing or decrementing a jump counter, and the jump jump searching means. A numerical control device comprising: a jump execution unit that changes a program execution pointer to a block searched by the previous search unit and instructs the program analysis unit to analyze a program of the block. 2. A program jump command analyzing means for analyzing a program jump command, a jump destination search means for searching for a jump destination until the jump counter reaches a command value by incrementing or decrementing a jump counter, and a ladder circuit. Receiving a jump invalidation request signal from the jump invalidation request signal detecting means, and moving a program execution pointer from the jump destination block to the next block of the program jump instruction, And a jump execution means for instructing the program analysis means to analyze the program of the block. 3. A jump counter command value setting request signal detecting means for detecting a jump counter command value setting request signal from a ladder circuit, and a jump counter setting request from the jump counter command value setting request signal detecting means. 2. A jump counter command value setting means for setting a jump counter command value.
Alternatively, the numerical control device according to claim 2. 4. Program jump command analyzing means for analyzing a program jump command, jump destination program number detecting means for detecting a designated program number,
A numerical control device comprising: a jump execution unit that changes a program execution pointer to a first block of a program detected by the jump destination program number detection unit and instructs the program analysis unit to analyze a program of the block. 5. The numerical control device according to claim 4, further comprising program nest level designating means for designating a program nest level and detecting a program number when detecting a designated program number.