JPH01296308A - Nc device - Google Patents

Abstract

PURPOSE:To reduce NC program verifying time and, at the same time, to easily confirm the working outline designated by an NC program by displaying the working outline designated by each block of the NC program after converting them into character strings. CONSTITUTION:Even when a certain block of an NC program is omitted and not described and its defining unit, etc., do not appear on the program, the defining unit can be specified by the dictionary pointer (the dictionary pointer of the block just prior to the current block) which is previously retrieved by a dictionary pointer retrieving section 15. The working outline designated by the defining unit is displayed in a display section 22 in character strings. Since the working outline of the NC program can be confirmed visually in a moment in such way, the NC program verifying time can be reduced. Moreover, since the working outline designated by the NC program is displayed in character strings, the working output designated by the NC program can be confirmed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an NC device suitable for use, for example, in creating an NC program for an NC (numerical control) machine tool.

[Summary of the invention]

The present invention is suitable for use in, for example, an NC device used to create a Ne program for an NC machine tool, and a translation dictionary that stores character strings indicating the specifications of each definition unit of the NC language and the corresponding machining outline. Searching the memory and the dictionary pointer in the translation dictionary memory corresponding to the definition unit of the NC language constituting each block of the NC program,
When the definition unit of the N08 word is omitted in a block of the NC program, the electrostatic pointer search unit uses the dictionary pointer of the immediately preceding Glock as the dictionary pointer of the block, and each block of the NC program specifies By converting the machining summary into a character string and displaying it, it is possible to shorten the verification time of the NC program, and when creating and editing an NC7'' program, it is possible to easily check the machining summary instructed by the NC program, and errors in the description can be avoided. It was designed to eliminate the

[Conventional technology]

NC machine tool 1dThe machine is automatically controlled by an NC program that includes the number 1 direct information input from the Nc device.

This automates a series of processing procedures that were previously performed manually by workers. An example of such a conventional NC machine tool is shown in FIG. In this Fig. 9, (1) shows the machine tool main body, and this machine tool main body (1) moves the workpiece (3) fixed on the moving table (2) to the processing tool (4).
Process with. Even when the machining tool (4) is fixed and the moving table (2) is moved during actual machining, it is generally described as a movement of the machining tool (4) relative to the shoulder workpiece (3) on the NC program. and the standard coordinate system (x
, y, z) determine the relative position and positive/negative direction.

Further, (5) indicates an NC device, which includes an operation section (6) for performing various operations and a control section (r) for controlling the operation of the machine tool main body (1) according to the NC program.
I). In the operation section (6), (8) is a key? -Do.

(9) is a display section for drawing the NC7'' program and the tool trajectory of the processing tool (4).What is the NC program?
It is a set of nine commands written in the C language, and the user of an NC machine tool must correctly write the KNC program in advance so that the machine tool body performs the desired operation. The NC language for writing the NCfC chrome is Jxs.
Basic specifications are stipulated by standards, etc., but in reality N
C9d manufacturers often include further expanded specifications unique to them.

[Problem to be solved by the invention]

However, the above-mentioned NC language is defined in a format that is easy for NC equipment to decode], and also includes specifications unique to the NC equipment manufacturer, so even if an operator writes the There was an inconvenience that this could be overlooked.

To deal with these inconveniences, conventional NC devices have a method of drawing tool trajectories on a display device, or It was called ``air gut'' and was used in a bad way.

Air cutting involves kicking the movement of a specific axis (for example, two axes) of the machine tool body, attaching a marking tool in place of the processing tool, and placing graph paper or the like on the moving table. This is a method of actually drawing the trajectory of a writing instrument on this graph paper to check whether the operator's intended movement is performed.

However, in these conventional methods, in addition to the time required to create or edit the NC program, verification time due to air cutting etc. is added, reducing the overall work efficiency, and if error 9 is discovered, the editing work must be restarted. It is necessary to repeat the series of operations (To9), and there is an inconvenience that the operation time other than the processing time (derogramminder time) becomes long.

For example, use a machining center for one hour! ! There are also reports that it takes about 15 hours to create the NC program necessary to operate the machine, even with automatic programming.
If this four-grinding time can be shortened, the entire working time can be significantly shortened.

The above-mentioned disadvantage is caused by the fact that when creating or editing an NC program, it cannot be confirmed whether the NC program describes the contents intended by the program creator.

The present invention has been made in view of the above points, and its purpose is to shorten the verification time of the NC program, and to easily understand the machining outline instructed by the NC program when creating or editing the NC program. We are proposing an NC device that can confirm this.

[Means to solve the problem]

For example, as shown in FIGS. 1 and 2, the NC device according to the present invention has a character string (for example, "Rapid traverse positioning") indicating the specifications of each definition unit Uo of the NC language and the corresponding processing outline.
and the dictionary pointer P(υ0) in the translation dictionary memory 4 corresponding to the definition unit (for example, U, ) of the NC language constituting each block of the NC7'' program. , when the definition unit of the NC language is omitted in the block of the NC7'' program, the dictionary pointer search unit (to) uses the dictionary pointer of the immediately preceding block as the dictionary 4 ink of the block; The machining outline instructed by each block of the program is converted into a character string and displayed.

[Effect]

According to the present invention, even if a certain block of the NC near program is written in an abbreviated notation and the definition unit Uo etc. does not appear in the program, the dictionary pointer searched in advance by the dictionary pointer search section can be used. (Dictionary pointer of the immediately preceding block) allows the definition unit to be specified, and a processing summary indicated by the definition unit is displayed. Therefore,
No because you can instantly see the processing outline of the NC program
Program verification time can be shortened.Also, the machining outline instructed by the NC program is displayed as a character string, so by using a normal language as the character string, the NC
The machining outline instructed by the program can be easily understood, and errors in program description can be eliminated.

〔Example〕

Hereinafter, one embodiment of the NC device of the present invention will be explained with reference to FIGS. 1 to 7.

FIG. 1 shows the configuration of the NC device of this example. In this FIG. 1st is the NC program memory that stores the NC program for the tnt'xm collection, and (2) is the working memory used during editing.The NCf r3gram stored in the NC program memory 0 is the tape league (not shown). ), or it may be input from the keymate mill through the key manual control unit.In the main control unit, the NC program memory 0 is read. They are stored in the working memory α car one after another, and at the same time, the interpretation processing unit α
The data is sent to the dictionary pointer search unit (c).

The interpretation processing unit a4 transforms the NC grogram written in the NC language into a character string indicating the corresponding processing outline by referring to a translation dictionary memory (e) to be described later.

For convenience of the following explanation, FIG. 2 shows an example of an NC program in an NC language conforming to the JIS standard used in this example. In this FIG. 2, N0001. N0OO2
゜... is the sequence number, G90, GOO
, Ga4 is a quasi-e function code that is realized as 0 function.

Examples of these 0 functions and their functions are summarized in Table 1.

Table 1 In Table 1, GOO, GO2, etc. are accompanied by information (modal information) such as target coordinate values and trajectory, and there is one set of representative modal information in one block of the NC grogram. For example, in the sequence number N0OOI in Figure 2, there are two types of G codes (G90 and GOO), but G9
Since 0 is not accompanied by modal information, the typical modal information is that of GOO.

Further, 081 is a cycle for drilling a hole as an example of a fixed cycle, and fixed cycle B is a cycle that is provided in advance to perform a series of complicated steps with one command.

In this way, since the code for the 0 function is often accompanied by modal information, the code for the 0 function is called a modal definition part (FIG. 2), and the modal information is called an element code part. Also, in sequence number N0OO4 in Figure 2, the modal definition part is omitted, but in this case, the modal definition part with sequence number N0OO4 is inherited from the modal definition part G81 with sequence number N0OO3. There is. This abbreviated description method is convenient when performing similar continuous processing, but on the other hand, it can also be a cause of errors when creating programs.

The translation dictionary memory in this example is composed of, for example, a ROM, and its memory contents are roughly divided into a constant total number section (20m), a modal definition section (20b), an element definition section (20a), and a ROM, as shown in FIG. It is classified into the conversion character definition section (2Oa). Among these, the total number of definitions (20&) (address A1)
The number M stored in the modal definition 5 (20b'') indicates the total number of stored 0 function types. Also, the modal definition section (20b) (after address A2) stores the M number of 0 function codes. and specifications in M definition units, υ,,U,.

...@U, , and memorize it separately. For example, the first definition unit Uo corresponds to the 000 function and is a modal match;
The code is Goo, the control code is 1, the number of elements is 4, the number of groups is 2, the element definition section I inter is set to Po, and the match code output character pointer is set to field. in this case.

If the control code is accompanied by modal information, the control code is set to a high level “l
”, and if there is no modal information, set it to 4-level “0”, and in principle, the modal definition section whose control code is high level “1” in one program or lock of the NC program There is one piece.

Further, the number of elements means the number of elements in the modal information, and the number of groups means the number of classifications of the same type of elements. For example, modal information is X, Y.

When Z and F (speed), the number of elements is 4 and the number of groups is 2 (X, Y, Z and F).

The element definition I interface P0 indicates the starting address of the element definition i% (20(+)) that defines the specifications of the four elements of this definition unit U0, and the match code output character pointer MPo.

This indicates the address of the conversion character definition section (20d) that stores the processing outline specified by the definition unit tyo as characters. In the example shown in FIG. 3, the characters "Fast forward positioning" are stored at the address pointed to by the I interface MP6. Definition unit below this υ8.
etc. are defined in the same way. In this case, the starting address Kuo input P (Ul) of each definition unit tyO, Ul, ...
,... are called dictionary pointers.

The element definition section (20e) (after address A3) stores the modal information for each definition unit (0 function) Ul e U [@... by classifying and storing it in element units such as x, y, z, etc. .

For example, element unit E is composed of element code 2, group code 1, and group output character I inter SO, and group output character I inter SO is the conversion character definition section (20d ).In this example, the address pointed to by the I interface SO is the end point (
)" characters are stored. Then, the element definition part (2
0@) has check information E@ attached to each element of the group.
etc. are added. Check information E6 is used to check the grammar of the NC language. And the conversion character definition section (20d) (after A411)
In K, a set of characters is stored that is an abbreviated Japanese expression of the outline of the side work indicated by the modal definition section and the element code section.

The translation dictionary memory ■ is configured as described above, and the interpretation processing 3
The dictionary pointer search unit (B) in the 1fflSCL4 retrieves one NC program input to the main control unit from the modal definition unit (G code) and element definition unit CxeY, Z.
), the code of the modal definition part is compared with the modal matching code in the translation dictionary memory (E), and the dictionary pointer P (Us) of the matching definition unit Ul is stored in pointer information storage consisting of RAM. Stored in section α in block order of the 70NC program. In this case, when the modal definition part is not specified in the NC program program due to the abbreviated notation, or even if the modal definition part is specified, if the control code of the mel definition part is 0, then , the dictionary pointer of the immediately previous block is regarded as the dictionary pointer of the boot stock and is written into the pointer information storage S4.

In FIG. 1, (b) indicates a conversion unit as a component of the interpretation processing unit (L4), and this conversion unit (goods) is NC7@
The NCf Ogram is converted into a character string that means the processing outline indicated by the NCf Ogram. Specifically, the conversion section (b)
is the l-block NC program sent from the main control unit α0 for each modal definition part and each element code part.
The iL element is decomposed and the dictionary pointer P (Ui) in the one-ink information storage unit (G) corresponding to this block is taken out.

The conversion unit (b) mainly converts the character string of the conversion character definition unit (20d) indicated by the match code output character pointer MPI of the definition unit Ul of the modal definition unit (20b) (see Figure 3) indicated by the dictionary pointer P (Ui). Store in the control unit sending memory (to). Next, the conversion part (b) converts the element code t into one
! 6 (excluding the a value) and the element units of the area indicated by the element definition pointer P1 are compared in the order of group codes, and the element code part of the NC program corresponding to the matched element unit is written to the conversion work memory α. - If there is a matching element unit after that, the element code part is combined with the contents of the conversion work memory (to) and the character string, and the result is written again to the conversion work memory (to). The contents of this conversion work memory a→ are emptied each time the conversion of one group of element data is completed. After all the processing for each element belonging to the same group is completed in this way, the character string in the conversion character definition section (ZOa) indicated by the group output character pointer Sk of that group and the conversion work menu are combined into character strings and added to the contents of the main control unit sending memory (2).Similarly, processing is performed for the number of groups in the definition unit Ui, and the element code part excluding each numerical value is added to the element definition part. Each time it matches an element unit in (20a), the decomposed element code part is deleted.

The character string finally stored in the system # section sending memory (to) is the translation result of one block of the input NC zologram. The main control unit (g) is the NC program memory (
6) Display the contents of the display unit (A) via the display control unit Q°C.
C program display area (22m), and the contents of the main control unit sending memory α are displayed in the translation result display area (2; 2b) of the display unit (2) via the display control unit QfJ. In FIG. 1, (c) is a drive control section for driving the machine tool body, and eI4 is a position detector for performing NC control.

Next, to explain the operation of the NC device in this example, the NC device in this example
Assume that the apparatus is used to edit and verify an NC program for drilling six entry points of required coordinate values in a workpiece (b), as shown in FIG. In Figure 4, drill (to)
Along the two axes, initial point (1) → reference point (R point) 0
The process of drilling a hole (A) by moving from 2 points to 0 points to initial point can be described by G81, which is a fixed cycle for hole machining.

Therefore, this NC program can be written by simply adding modal information to the fixed cycle G81.
It will have a structure like this. The program of FIG. 5A may be read into the NC program memory (2), for example from a tape league, or may be written into the NC program memory (6) from a key drive. For example, in order to verify the NC program after sequence number N0O40 in Figure 5A, it is first necessary to display the NC program in the NC program display area (22m) on the display section as shown in Figure 5B. Then, the result (34 &) of the block with the cursor (33m) translated is displayed in the translation result display area (22b), and the cursor is moved to the arrow (33b) to translate the program of that block. Translation result display area (22b)
).

In this case, the NC program in this example is
The flow of operations displayed in the program display area (22m) will be explained with reference to FIG.
1 line) and sends it to the working memory (to) and the dictionary pointer search unit 05 (step (100)).

(101)). Dictionary point/retrieval unit 4 decomposes the one block of NC nogram into a modal definition part and an element code part set, and checks whether the code of the decomposed element matches any of the modal match codes shown in FIG. investigate(
Steps (102) to (105)). Stella f (108
) Go to K and check whether the control code is high level rlJ. When the control code is "1", the dictionary pointer P of the definition unit Ul of the modal definition part
(Ui) is written to the pointer information storage unit α0, and its NC
Control the display of one block of the zologram by entering K and displaying the NC program display area (22m) on the display section (A).
Check whether there is free space (step (109) ~
(111)). If there is space in the display area (22 fields), the process returns to step (100), and if there is no space, the display operation is stopped. In step (103), the code of the element does not match any modal match code,
Or, when the control code is low level "0" in Stella f (108), the process moves to step (106), the element is updated, the process goes through step (107), and Stella f (10
Return to 3). However, if the element runs out, the step (
107) Move to step (112) and select the dictionary pointer P(UJ) of the block of the NC program immediately before that step.
is written redundantly into the pointer information storage section a0, and then the process moves to Stella f (110).

Therefore, if a block of the NC program does not have a modal definition section due to an abbreviated notation, it is determined that the modal definition section of the immediately preceding block is continued.

Corresponding to the human NC program shown in FIG. 5, the I ink information storage section αfiK of this example stores a dictionary pointer having the structure shown in FIG. In Figure 7, the dictionary pointer on the 10th line is P(
Uo) is when the program starts, the 0 function is GOO
This is because K is initialized. Also, Figure 5 shows the N00 of people.
60 to N0100f use the rounding described in abbreviated notation, and the dictionary pointer from the 60th line to the 100th line in FIG. 7 uses P(Usl) on the 50th line.

Figure 8 shows the flow of operations for translating one block (one line) of the NC program in the NC program display area (22m) in Figure 5B (D) using the NC device of this example. (2) After extracting the l block of the NC program and decomposing it into elements, read the dictionary linter P (Uk) of the block from the address of the corresponding pointer information storage unit αQ (Stella f ( 113) ~ (115
)). Then, Henkubusuke uses the dictionary pointer P(Uk)
The character string indicated by the address of the match code output character pointer of the modal definition section (20b) indicated by is sent to the main control section sending memory 4, and the element definition section pointer of the modal definition section (20b) indicated by the dictionary pointer P (Uk) is sent. Select the element definition section (20(+)) indicated by the address (step (116)
), (117)).

Next, the conversion unit aη sequentially compares the element code of the block with the element code of the element definition unit (20o) in the translation dictionary memory (E) (Stella f (118) to (131)
)), the element code part (rXl
oo, OJ, etc.) is stored in the conversion working memory (to) by character string synthesis, and then its element code portion is erased (steps (119) and (120)). If the element code part of the same group still remains, Stella f (121
) to (123), the conversion part o'I) returns to Stella 7'
Return to (118). When all the element code parts of the same group are combined in the conversion work memory C11l, the character string (such as "feeding speed") at the address indicated by the group output character pointer S of the element definition part (20a) is stored in the conversion work memory O8. After the character string is synthesized and stored in , the contents of the conversion working memory a are added to the main control unit sending memory cLIK (
Steps (124), (125)). After that, the element code part of that block is updated and the same procedure is repeated (steps (126), (127), (11
8) to), if all the element code sections have been compared (erased), the main control section (g) performs a grammar check, and then displays the content of the main control section sending memo 9Ql, that is, the translation result, on the display section. Translation result display area (22b) K display (Stella f (
128).

(129)).

In addition, in steps (118) to (131), if there is no element code that matches the code of the element being compared (modal definition part or element code part excluding numerical values), the element is in the modal definition part. Because there is a conversion part (b)
The process moves to step (132), and the definition unit U in the modal definition section (20b) to which the element belongs is determined.

After specifying, the character string at the address indicated by the match code output character pointer MP (l) in the definition unit Uo is stored in the main controller sending memo vasK character string composition (step (13)
3) ), proceed to step (126).

For example, when an abbreviation is used and all the element code parts of the same group are not described, as in the case of human sequence number N0O60 in FIG. Turning to K,
The contents of the conversion work memo 908 are inserted into the corresponding portion of the main controller sending memory Ql. Therefore, when a part of the element code part is omitted, the NCf log 2 of the immediately preceding block
The element code section written in the program is used as it is as the omitted element code.

By the above-mentioned operation, the translation result of the NCfaCf migram sequence number N0050 in FIG. 5B is (34
m). Similarly, the abbreviated notation is used for the sequence number N0O60, but the translation result is (3
4b), a result is obtained in which only the value of the coordinate Y in the translation result (34m) is changed. In this way, according to the NC device of this example, the machining summary written in the NC language and instructed by the ftNc program is translated into Japanese and displayed, allowing one operator to accurately understand the contents of the NC program. This has the advantage of eliminating description errors when creating an NC program.

Furthermore, even if the abbreviation notation is used in a certain block of the NC program and the modal definition part is not described,
Since the modal definition part of the immediately preceding block is automatically interpreted as the modal definition part of the block in question and the corresponding machining summary is displayed, the operator can verify the NC program without performing air cuts. can be done in a short time.

In this example, the converted character definition section (20d) stores Japanese character strings, but it may also store character strings in English, German, or other foreign languages, for example.

Therefore, the NC device of the present invention has the advantage that it can be used in any country by simply changing the character string in the translation dictionary memory to a foreign language. As described above, the present invention is not limited to the above-described embodiments, and it goes without saying that changes can be made without departing from the spirit of the present invention.

〔Effect of the invention〕

The NC device of the present invention executes the NC program by referring to the translation dictionary memory (to) that stores character strings indicating the specifications of each definition unit (modal definition section and element food section) of the NC language and the corresponding processing outline. It is translated into a character string that is easy for operators to understand, so when creating and editing an NC program, the NC
This has the advantage of being able to easily check the machining outline instructed by the program and avoiding errors in the description.

In addition, when the description of a definition unit is omitted in a certain block of the HCfcs gram, the dictionary data search unit C15 is provided which uses the dictionary pointer of the immediately preceding block as the dictionary pointer of the block. Since it is possible to obtain a translation result with no omissions corresponding to the above, there is an advantage that verification of the NC program can be performed reliably and quickly.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the NC device of the present invention, FIG. 2 is a line diagram showing an example of the NC program of the present example, and FIG. 3 is a line diagram showing the storage contents of the translation dictionary memory m of the present example. 4 and 5 are diagrams for explaining the operation of this example, FIG. 6 is a flowchart showing the display operation of the NC7° program according to this example, and FIG. 7 is a pointer information storage section of this example. (A diagram showing the contents of 1Q, FIG. 8 is a flowchart showing the NC program translation operation according to this example, and FIG. 9 is a perspective view showing an example of a conventional NC machine tool. αQ is the main control unit, ( ) is a dictionary pointer search unit, αO is a pointer information storage unit, and 翰 is a translation dictionary memory.

Claims (1)

[Claims] A translation dictionary memory storing character strings indicating the specifications of each definition unit of the NC language and a corresponding processing outline; A dictionary pointer search in the translation dictionary memory, and when the definition unit of the NC language is omitted in the block of the NC program, the dictionary pointer of the immediately previous block is used as the dictionary pointer of the block. 1. An NC device, comprising: a processing summary indicated by each block of the NC program, which is converted into a character string and displayed.