JPS61170807A - Numerical controller - Google Patents

Abstract

PURPOSE:To attain highly reliable correction by forming a sequence operating means, a sequence erasing means, etc. and retrieving and erasing an unnecessary sequence only by the specification of a tool route to be corrected and edited. CONSTITUTION:A numerical controller 1 has a main control part 2 and a display 3, an input device 5 such as a mouse, an editing operation control part 6, a tool route editing operation part 8, etc. are connected to the main control part 2. A working program PRO formed and stored is displayed and checked by simulating the program on the display 3 prior to the execution. If a tool route to be corrected is detected by the simulation, the tool route is corrected through the input device 5. To correct the route, the number of sequences to be corrected is operated by the control part 6 or the like and an unnecessary sequence is erased by the sequence erasing means such as the control part 18 or the like. At the correction of the tool route, the position to be corrected is specified on the display 3 to correct and edit the tool course.

Description

[Detailed Description of the Invention] (&), Industrial Application Field The present invention relates to a numerical control device for driving and controlling a machining needle.
In particular, the present invention relates to a numerical control device capable of correcting a corresponding portion of a machining program related to the tool path of the designated portion by instructing a tool path displayed on a display using a modification instruction means.

(b), Conventional technology In order to judge whether the tool path in the machining program has been created correctly, it has traditionally been done to simulate the machining program on the display of a numerical control device. If there is an error in the tool path, the corresponding sequence in the machining program must be manually searched for and corrected.

(C) 0 Problems to be solved by the invention However, since a large number of similar data are arranged in a machining program, the task of searching for the data to be corrected is extremely complicated, and there is a risk of making mistakes. It was expensive.

In order to eliminate the above-mentioned drawbacks, the present invention provides a numerical control system that eliminates the need for an operator to manually search for a machining program when modifying a tool path, and therefore allows highly reliable modifications with less risk of mistakes. The purpose is to provide the following.

(d) Means for solving the nine problems, that is, the present invention has a display that displays the tool path indicated in the machining program, and a tool path correction instruction that indicates the tool path to be corrected on the display. and a sequence number calculating means for calculating the number of sequences on the machining program to be corrected and edited in the tool path to be corrected instructed by the tool path correction instruction means, and the sequence number calculating means to be corrected by the sequence number calculating means. If there is a plurality of sequences, a sequence erasing means is provided for erasing unnecessary sequences from the machining program, and an operation command is further provided for creating a new operation command for the tool path to be corrected instructed by the tool path correction instruction means. It is configured by providing a creation means.

(e) 0 effect With the above-described configuration, the present invention allows the operator to operate the tool path correction instruction means to instruct the tool path to be corrected and edited, and then search and erase unnecessary sequences in the machining program to be corrected. It is.

Furthermore, it acts so that a new operation command is created.

ffl. Example Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a control block diagram showing an embodiment of the numerical control device according to the present invention, FIG. 2 is a flowchart showing an example of a machining program correction program, FIG. 4
Figure 5 is a flowchart showing the sequence deletion subroutine, Figure 5 is a flowchart showing the edit sequence creation subroutine, Figure 6 is a flowchart showing the data conversion calculation subroutine, and Figure 7 is the display coordinate system on the display and the machining program. Figures 8 to 11 are diagrams showing the relationship with the coordinate system;
FIG. 2 is a diagram showing an example of a modification mode of a machining program.

As shown in FIG. 1, the numerical control device 1 has a main control section 2. The main control section 2 includes a display 3, an input value f5 from a keyboard, a mouse, etc., an Ii collection operation control section 6, and a coordinate control section 6. Reading calculation unit 7, tool path editing calculation unit 9, tool path lis
Control unit 18, execution control data memory 10. A simulation funnel control section 8, a machining program memory 14, a system program memory 12, an NC program creation control section 13, and the like are connected. An axis control section 15 that drives and controls each control axis in the machine tool is connected to the execution control data memory 10, and a drive motor 16 that drives each of the control axes is connected to the axis control section 15.

Since the numerical control device 1 has the above configuration, the NC program creation control section 13 creates the machining program PRO using a known automatic program method based on the machining data inputted by the operator via the input device 5. and stores it in the machining program memory 14. Before the machining program PRO created and stored in the machining program memory 14 is executed, the NC program creation control section 13 checks whether the tool path of the machining program PRO created by the machining program PRO is set correctly. It is displayed and confirmed by simulating it on the display 3. The simulation of the machining program PRO is performed by the simulation control unit 8 performing predetermined calculations and displaying the tool path on the display 3. This method is already known, and as of January 1985, Since it is widely used as part of the functions of numerical control devices, detailed explanation thereof will be omitted here.

In this simulation, when a tool path to be modified is found, the operator operates the input device 5 to output a machining program modification command ACM to the main control section 2. In response to this, the main control section 2 reads the machining program modification program MAP from the system program memory 12 and starts the tool trajectory modification operation. That is, in the machining program modification program MAP, as shown in FIG.
In step S1, the tool path being simulated on the display 3 at the time when the operator inputs the machining program modification command ACM is displayed, and in step S2, the operator is instructed to change the tool path by operating the input device 5. let

In this operation, the edit conversion control unit 6 moves the cursor 17 to the tool path 1 displayed on the display 3, as shown in FIG.
This is done by moving it on 9. When the cursor 17 is moved and positioned on the tool path 19 to be corrected in step S2, the subroutine SUB1 for calculating the number of sequences to be edited is entered, and the number of sequences in the machining program PRO to be corrected and edited is calculated.

In the editing target sequence number calculation subroutine 5UB1,
As shown in FIG. 3, in step S3, the coordinate reading calculation unit 7
It is calculated by calculating.

The tool path 190 instruction to be corrected by the cursor 17 is as follows:
As shown in FIGS. 9 and 10, this is done by indicating the start point SP and end point EP of the tool path 19 to be corrected and edited on the display 3, so in step S3, the coordinate values of the start point SP and end point EP are Calculate. -Then,
In step S4, the tool path data in the machining program PRO is executed in a simulated manner one by one by the execution control unit 8, and in step S5, the editing operation control unit 6
It is determined whether or not the sequence of passing over the coordinate position of the starting point SP obtained in step S3 has been executed. If the sequence has not been executed, the process returns to step S4, and if it has been executed, the process proceeds to step S6. Set n=1 and further step S7
It is determined whether or not the sequence of entering and passing over the coordinate position of the end point EP has been executed. Passing over the coordinate position of the end point EP - If it is determined that the sequence has been executed, step S8 is entered, and the correction l1il! according to the operator's instruction is performed. I! It is determined that the operation is related to editing of n pieces, that is, one sequence. FIG. 9 shows an example of a sequence in which there is one editing target. In this case, as is clear from the figure, the sequence to be corrected in the machining program PRO is a sequence of linear interpolation from point P1 of coordinates (xlly,) to point P2 of coordinates (x2, y2), and A straight line connecting P1 and point P2,
That is, the instruction of the tool set Ws19 to be modified, which is specified by the operator, exists on the tool path 19 as a starting point SP and ending points F, P. Therefore, in this case, the modification is the coordinates (x, ,
y, ) to point 2 at coordinates (x2, y2).

On the other hand, if it is determined in step S7 that the sequence passing over the coordinate position of the end point EP has not been executed, that is, if there are two or more sequences to be edited, step S9 is entered, and n = n + 1. Then, the process further enters step 310, executes the next sequence in a simulated manner, returns to step S7, and again determines whether or not the sequence of passing over the coordinate position of the end point EP has been executed. do. In this way, the value of n is incremented by 1 in step S9, and the machining program is executed sequence by sequence in step S10 until the sequence passing through the end point EP is executed. Furthermore, if it is determined in step S7 that the sequence passing over the coordinate position of the end point EP has been executed, the process proceeds to step S8, and as already explained, the value of n at that point is corrected and edited. Let be the power sequence number. 1st
To explain the case where the number of sequences to be corrected and edited is three in Figure 0, the tool path 19 according to the machining program PRO is from point P1 to point P2 and from point P3 to point P4.
Linear interpolation is performed between points P2 and P3, and circular interpolation is performed clockwise between points P2 and P3.
3 and P4, the number of sequences involved in corrective editing is: ■ A sequence of linear interpolation from point P1 to point P2, ■ A sequence of circular interpolation clockwise between points P2 and P3, (2) Corrections are made regarding three sequences, including the sequence of linear interpolation from point P3 to point P4.

In this way, once the number of sequences to be edited in the modified 1iil collection has been determined, the process returns to step 311 in FIG. If the number of sequences to be corrected and edited is multiple, enters the sequence deletion subroutine SUB 2,
The tool path editing control unit 18 is instructed to delete sequences in the machining program PRO that are no longer needed. That is, as shown in FIG. 4, the sequence deletion subroutine 5UB2 checks the machining program PFLO one sequence at a time in step S12, and determines whether the sequence is a sequence in which the starting point SP exists (in FIG. 10, the starting point SP is It is determined whether the existing sequence is a sequence that instructs linear interpolation from point P1 to point P2. In Fig. 12 (al), a machining program showing the tool trajectory 19 shown in Figs. 9 and 10 is displayed using EIA/ISO code, but in this case, the sheep where the starting point SP exists: / is GOI X in the second line
The sequence SEQ becomes x2 Yy; In step S12, if the read sequence SEQ is not the sequence SEQ in which the start point SP exists, step 31
3, enter the following sequence SEQ in Canada Nib Party Gram PR
It is called from O and then returns to step S12.

In this way, when the sequence SEQ in which the starting point SP exists is found, the process proceeds to step S14, where the sequence SEQ is deleted as unnecessary, and further step 31
5 Add the following sequence SEQ to the nib quadrigram PR
0, and in step 516 the sequence SE
It is determined whether Q is a sequence SEQ in which an end point EP exists. In step 316, unless the read sequence SEQ has an end point EP, the process returns to step S14 and erases the sequence SEQ.

That is, from the sequence SEQ where the starting point SP exists
- Delete all sequences SEQ up to the sequence SEQ immediately before the sequence SEQ in which the end point EP exists. In the case of Fig. 10, in Fig. 12 (al), the sequence S in the second and third lines from the top in the figure
EQ will be deleted.

In this way, the predetermined sequence SEQ is the machining program P
When deleted from the RO, the editing sequence creation subroutine 5TJB3 shown in FIG. 2 is entered, and the tool path editing control section 9
A new sequence SEQ is created based on the operator's instructions. Note that, in step 311, if the modification instructed by the operator relates to only one sequence SEQ, the editing sequence creation subroutine 5UB3 is entered directly from step 311. The wA collection sequence creation subroutine 5UB3, as shown in FIG.
In step 17, a G code command whose end point is the coordinate value of the starting point SP is created as the first editing sequence. Note that the instruction of the G-function is the erased corresponding sequence SEQ
The instructions shall be the same as those given in . That is, in the case of FIG. 10, the command created in step 517 is GOI
YyS; becomes. Next, in step 318, the new sequence SEQ created in step S17 is transferred to the sheet where the end point EP exists in the processing program PRO:/
X5EQ (in Figure 12(a), GOI Xx,
YF, ; becomes the sequence SEQ in which the end point EP exists. ) is inserted immediately before.

Furthermore, in step 519, the operator is made to input the number M of points to be passed through from the start point SP to the end point EP, and if the number M of points to be passed through is 0, step 321 is entered, and the editing final sequence is Go 1 X x t Y
y t i (In the case of Figure 5, the case where the instruction of the G-Funk System in the final sequence is 001 is written, but the G-7 Ankushi Shin is set as appropriate according to the operator's instructions. is possible). Note that the coordinate value of the end point EP is "@S7y. In this way,
After the final sequence is created in step S21, the process proceeds to step 322, where the R final sequence created in step 321 is inserted immediately before the sequence where the end point EP exists. As a result, the machining program PRO becomes as shown in FIG. 12 (bl), and its tool trajectory 1
9, as shown in FIG. 11, is obtained by linearly interpolating the starting point SP and ending point EP designated by the operator.

If the number M of points to be passed through is not 0 in step 320, the process proceeds to step 323, where the number of editing sequences K is set to 2, and in step 324, the operator is instructed as to the first point to be passed through from the starting point SP. . The operator is
The input device 5 is operated to indicate a waypoint on the display 3 using the cursor 17. When the cursor 17 is positioned at the waypoint, the coordinate values of the cursor 17 are read in step 325, and the coordinate conversion subroutine 5
Entering UB4, the position of the cursor 17 in the display coordinate system on the display 3 is converted to a machining program coordinate system in which a machining program is created. That is, the figure displayed on the display 3 is displayed based on the display coordinate system DC8, as shown in FIG.
is the coordinate value (xSy s '
o] is set as the coordinate space with the origin ZP, so the coordinate value (XpSy, z,) of the waypoint xP indicated by the cursor 17 in the display coordinate system DC3
is the coordinate 1m (X
p, Y, Zp).

This conversion calculation is performed by coordinate conversion subroutine 5 shown in FIG.
This is performed by the coordinate reading calculation section 7 based on the UB4.

Once the coordinate values of the way point xP in the machining program coordinate system MC3 have been determined, step 326 in FIG. 5 is entered and a G code command up to the determined way point xP is created as the second editing sequence. In addition, G
- As already mentioned, the functions can be set as appropriate according to instructions from the operator. In this way, when the sequence up to the first way point
It is inserted immediately before the sequence where P exists, and further, in step 328, it is determined whether K=M+1, that is, whether there is a way point XP for which a G code command has not been created yet, and the way point xP is inserted. If still exists, step 32
9, returns to step 324, has the operator again instruct the next waypoint xP, and determines the desired G
Create code directives. In this way, all the G
Once the code command has been created, the process proceeds from step s28 to step 321, where a 111m final sequence is created and inserted into the machining program PRO at step 322.

Next, the machining program modification program MA shown in FIG.
Step 530 of P is entered, and the corrected and edited tool path 19 is displayed on the display 3, for example, as shown in FIG. 11, and in step 331, tool path 1
When the operator is asked whether or not the correction editing of step 9 has been completed, and a command indicating that it has been completed is inputted from the input device 5, the correction work of the tool path 19 is completed, and if not, the process returns to step S2. Returning, the operator instructs the next point to be corrected, and thereafter performs predetermined correction/editing operations in the same manner.

In this way, the six E range 1 for the machining program PRO is completed, and the modification of the tool path 19 is also completed ζ.
The modified machining program PRO is transferred to the execution control data memory 10, and further, the axis control section 15 drives and controls each drive motor 16 based on the transferred machining program PRO to perform predetermined machining. The modified machining program PRO is, for example, as shown in FIG. 12 (bl), since the tool path 19 has been modified with respect to the machining program PRO before modification in FIG. As such, the tool is appropriately driven and controlled along the corrected tool path 19 according to the operator's correction instructions.

(g) 1. Effects of the Invention As explained above, according to the present invention, the display 3 that displays the tool path 19 shown in the machining program PRO is provided, and the tool path 19 to be corrected is displayed on the display 3. An editing operation control unit 6 or the like is provided with a tool path correction instruction means such as an input device 5 for instructing the tool path correction instruction means, and calculates the number n of sequences to be corrected Wa in the tool path 19 to be corrected instructed by the tool path correction instruction means. A sequence number calculation means is provided, and a sequence deletion means such as a tool path editing control unit 18 is provided for deleting unnecessary sequences when the number of sequences to be corrected by the sequence number calculation means is plural; Since a motion command creation means such as a tool path** calculation unit 9 is provided to create a new motion command such as a G code command for the tool path 19 to be corrected instructed by the instruction means, the tool path in the machining program PRO is provided. By simply indicating the position to be corrected on the display 3, the operation command in the corresponding machining program PRO will be corrected and edited. Compared to conventional methods of modifying data inside, it is possible to modify machining programs accurately, without errors, and with high reliability.

[Brief explanation of the drawing]

FIG. 1 is a control block diagram showing an embodiment of the numerical control device according to the present invention, FIG. 2 is a flowchart showing an example of a machining program correction program, FIG. Figure 4 is a flowchart showing the sequence deletion subroutine, Figure 5 is a flowchart showing the edit sequence creation subroutine, Figure 6 is a flowchart showing the data conversion calculation subroutine, and Figure 7 is the display coordinate system on the display and the machining program coordinates. 8 to 11 are diagrams showing an example of how the tool path is displayed on the display when modifying the tool path, and FIG. 12 is a diagram showing an example of how the machining program is modified. . 1... Numerical control device 3... Display 581. Engineering. Eee□. (Ika□) -6・・・・
・Sequence calculation means (!mW operation control section) 9.. Operation command creation means (tool path editing calculation section) 18 ..Sequence erasing means (tool path editing control section) 19 ..Tool path PRO-・Machining program SEQ -・Sequence Applicant Debata Ironworks Co., Ltd. Agent Patent Attorney Phase 1) Shinji (and 1 other person) Figure 4 Figure 6 Figure 8 3 Tetsufu 6 Ray Figure 12

Claims (1)

[Scope of Claims] A numerical control device that executes a machining program having a tool path along which a tool is to be moved during machining in the form of operation commands for each sequence, comprising a display that displays the tool path indicated in the machining program. and a tool path correction instruction means for instructing a tool path to be corrected on the display, and a number of sequences on the machining program to be corrected and edited in the tool path to be corrected instructed by the tool path correction instruction means. , further comprising a sequence erasing means for erasing unnecessary sequences from the machining program when the number of sequences to be corrected by the sequence number computing means is plural, and further comprising a sequence erasing means for erasing unnecessary sequences from the machining program; A numerical control device is provided with a motion command creation means for creating a new motion command for a tool path to be corrected instructed by a numerical control device.