JP2677889B2 - Numerical control unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a numerical control device for machining a machine tool based on a control program, and in particular, skips any information in the program by a skip function and skips it. The present invention relates to a numerical control device that reads out and executes a stored program to automatically control a machine tool.

[Prior Art] In a machine tool using numerical control, generally, when machining a workpiece, one part program is prepared for one type of workpiece and predetermined machining is performed based on this. .

However, many of the workpieces to be processed have similar shapes,
In particular, in such a case, as shown in FIGS. 6 and 7, for example, only a part of the shape is often different.

Therefore, in the conventional case, when machining a work having a different shape in only a part of this kind, a part program corresponding to a process part which becomes unnecessary depending on the machining work, such as the program shown in FIG. On the other hand, a specific symbol such as a slash symbol "/" is provided at the head of each block of the plurality of block groups, and the optional block skip function for executing the processing is performed.

This optional block skip function, when a specific symbol (character) is added to the beginning of the above block, when the optional block skip switch provided on the operation panel of the operation unit is ON, the information of the arbitrary block is displayed. This is a function to skip and disable.

Therefore, conventionally, this function was used for numerically controlled machining, and the optional block skip switch was turned on.
If so, the process unit is invalidated, and if the optional block skip switch is OFF, the process unit is validated and the machine tool is controlled based on the part program.

FIG. 4 shows a circuit configuration diagram of a numerical controller having an optional block skip function of this kind. As shown in the figure, a conventional numerical controller has an operation unit having the optional block skip switch. 10, a part program storage unit 12, and a block skip processing unit 14
And part program analysis part 16 and part program execution part
It consists of 18 and.

That is, the block skip processing unit 14 stores the stored part program from the part program storage unit 12, for example, in block units (N001 shown in FIG. 5,
N002, ... ~, N009).

Then, based on the information of the block skip switch ON / OFF switching in the operation unit 10, that is, the validity or invalidity of the skip, a specific symbol such as a slash symbol “/” is added as shown in FIG. It is determined whether the block is valid or invalid, and only the determined valid block is transferred to the part program analysis unit 16.

Then, the part program analysis unit 16 sends only the valid block to the part program execution unit 18, and the execution unit 18 executes the contents of the valid block.

[Problems to be Solved by the Invention] However, in such a conventional numerical controller, the optional block skip function, when the block skip switch is ON, displays a specific character symbol added to the beginning of the block as described above. It was not possible to collectively invalidate a plurality of consecutive blocks, since the block was recognized and thereby invalidated only this block.

Therefore, in order to collectively invalidate consecutive blocks, it is necessary to add a specific symbol such as a slash symbol “/” to all target blocks as shown in FIG.

That is, as shown in FIG. 5, this function recognizes the specific symbol “/” added to the head of the block and invalidates the block only when the optional block skip switch on the operation unit 10 is ON. If you want to invalidate the whole process part of the required part program,
Like N003 to N006 shown in FIG. 5, it has been necessary to add a specific symbol "/" to the head of all the block groups in the process section.

Therefore, in creating the part program,
The above-mentioned matters must be taken into consideration, and there is a drawback that it is very troublesome and time-consuming.

Further, as shown in FIGS. 8 and 9, when the contour machining of two different types of machining works is performed,
It is necessary to create a part program as shown in the figure.

In this part program, each block part (N203, Y90) and a part (X9
If it is possible to select whether to validate or invalidate the information (0), machining of two types of shaped workpieces shown in FIGS. 8 and 9 can be performed by one program.

However, in the above part program, with the conventional optional block skip function, it is not possible to skip each block part and part within the block together, and in particular, skip part (X90) within the block. It is impossible to do so, and two types of part programs must be created. As a result, the program becomes long, and the time for creating the program is wasted.
There was a disadvantage that it took time and effort.

OBJECT OF THE INVENTION The present invention has been made in view of the above conventional problems,
The purpose is to add an instruction symbol for starting skipping and an instruction symbol for canceling skip to specific skip target information in the program, and use these two instruction symbols to enable any continuous skip target information to be effective at once. An object of the present invention is to provide a numerical control device capable of selecting invalidity.

[Means for Solving the Problems] In order to achieve the above object, a numerical control device according to the present invention is a program including a plurality of blocks for executing machining, and executes skip target information designated by a skip instruction symbol. In a numerical control device that analyzes and executes a skip addition program including, and automatically controls a machine tool depending on whether the skip target information is valid or invalid, a set of a skip start symbol and a skip cancellation symbol that constitutes a skip instruction symbol Program storage means for storing a skip addition program in which at least one of them is added in the middle of one block, skip selection means for specifying validity / invalidity of the skip indication symbol added to the skip addition program, and skip indication symbol When it is valid, the skip target information is invalid, and when the skip indicator is invalid, And an instruction symbol determination reading unit that makes the skip target information valid.

[Operation] With the above-described configuration, according to the numerical control device of the present invention, a skip start symbol for starting skip and a skip cancel symbol for ending skip are added to skip target information which is arbitrary information in the control program. The machine tool is automatically controlled by the skip addition program to which is added.

Therefore, in the case of performing the skip, when the skip start symbol is determined, the skip target information up to the skip cancellation symbol can be invalidated.

Further, when skipping is not performed, it becomes possible to validate all the information of the skip addition program.

As a result, it is possible to execute only the skip target information enclosed by the skip start symbol and the cancel symbol and execute the skip addition program. Therefore, it is possible to select whether the skip target information is collectively valid or invalid.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit configuration diagram showing an example of a numerical control device according to the present invention. The same members as those in FIG. 4 described above are designated by the same reference numerals, and the description of the configuration and operation will be omitted below.

A feature of the present invention is that when skipping is performed based on the skip addition program, when the skip start symbol is determined, the skip target information until it is determined as the skip cancellation symbol is invalidated, and the skip is performed. If there is not, it means that all the information of the skip addition program is valid.

The configuration of the numerical controller shown in FIG. 1 showing the present embodiment will be described below.

In the figure, the numerical control device of the present embodiment shows a skip addition program storage unit 20 for storing a skip addition program to which a skip start symbol and a skip cancellation symbol are added.
And a skip selection operation unit 22 as a skip selection unit for selecting whether to skip or not, and an instruction symbol determination read unit 24 for determining the skip start / release symbol and reading the skip addition program.

The instruction symbol determination read unit 24 includes a skip start symbol determination unit 26 and a skip cancellation symbol determination unit 28 as shown in the drawing, and both determination units 26, 28 are connected in parallel.

That is, first, the skip start symbol determination unit 26, the skip addition program 20a read from the skip addition program storage unit 20 is input,
On the other hand, as the selection information for performing the skip determination process, a skip selection signal indicating whether to skip from the skip selection operation unit 22, that is, skip valid / invalid information 22a, 22b.
Is entered.

The skip start symbol determination unit 26 uses the skip valid information.
When skipping is performed by 22a, the skip addition program is sequentially read as the skip determination program 24a as it is until the start symbol (character) for starting the skip appears in the skip addition program sequentially input to the part program analysis unit 16. Forward.

Then, here, when a start symbol for starting the skip by each block or a part of the block appears, the skip start symbol determination unit 26 determines the skip start symbol at this point, the subsequent skip addition program The skip cancellation symbol determination unit 2 is used as the skip target information 26a that is invalidated without being transferred to the part program analysis unit 16.
Transferred to 8.

Therefore, in the skip cancellation symbol determination unit 28, the skip additional program is idle-read until the cancellation symbol for canceling the skip appears by the transfer from the skip additional program storage unit 20, and the program to be idle-read is It corresponds to the skip target information and is treated as invalid.

Then, the skip cancellation symbol determination unit 28, when a cancellation symbol (character) for canceling the skip appears in the skip addition program, the skip target information ends and an instruction to end the skip processing is given. The end instruction signal 28a is output to 26.

Thereby, the skip start symbol determination unit 26 causes the skip target information of the skip addition program up to the time when the end instruction symbol 28a is input to be skipped, and transferred to the part program analysis unit 16 as the skip determination program 24a. It is restarting.

Therefore, in the part program analysis unit 16, the transferred skip determination program 24a is analyzed and executed by the part program execution unit 18, whereby
It is possible to operate the machine tool by selecting valid / invalid of the skip addition program surrounded by the start symbol for starting skip and the cancel symbol for canceling skip.

FIG. 3 shows a specific example of a part program in which each block is described in a display state, and the operation will be described below with reference to FIG.

In this example, the skip instruction symbol (character)
The slash "/" is the start symbol to start skipping, and the backslash is used. Is a cancellation symbol that cancels the skip.

Here, in the block of sequence number N103 shown in (1) of the figure, It can be seen that only X151 surrounded by and becomes the skip target information, and for example, the adjacent Y102 is not the skip target.

Furthermore, in the block of sequence number N105 shown in (2) of the figure, from the beginning "/" to the end of the block end Y110 of sequence number N106 shown in the next (3). Skip is enabled until appears, which causes The block with the sequence number N105 and the block with the sequence number N106, which are enclosed by and, are the target information for continuous skipping.

Therefore, in sequence numbers N101 to N107, skips are X151 of N103, X153 of N105, Y106 to X155, Y of N106.
Only 110 will be done.

In this example, as an instruction symbol indicating the start / cancel of skip However, of course, another specific indicator symbol (character) is not limited to this, and if a character that can be distinguished from the additional character of the block skip function is used, this allows the block skip function to be used together. It will be possible.

Next, the operation of the circuit configuration diagram of this embodiment shown in FIG. 1 will be described in detail with reference to the flow chart of FIG.

When the program is started by the activation operation of the skip selection operation unit 22 (step 000), the skip addition program storage unit 20 reads the skip addition program (step 100), where the skip addition program is already skipped in step 100. If it is, the process proceeds to the determination of the skip cancellation state (step 150), and if it is not being skipped, the process proceeds to the determination of the next skip valid state (step 110).

Then, skip valid of the skip selection operation unit 22
If the invalid information is invalid, the process proceeds to step 170 for performing the part program analysis, and if it is valid, the process proceeds to the next step 130 (step 120).

Further, the skip start symbol determination unit 26 determines whether or not it is a start symbol (character) to start skipping (step 130), and if it is not a symbol to start skipping,
Proceed to step 170 for performing the part program analysis,
If it is a symbol to start skipping, the skip executing flag is turned on and the process proceeds to the next step 150 (step 140).

The flag indicating that this skip is being executed is the same as in step 11 above.
Used in a 0 decision.

The skip cancellation symbol determination unit 28 determines whether or not the cancellation symbol (character) cancels the skip (step 15).
0) Here, in the case of the judgment NO which is not the symbol for canceling the skip, the process returns to step 100 as shown in the figure, and in the case of the judgment YES which is the symbol for canceling the skip, the skip executing flag is turned off. (Step 160) and then returns to Step 100 as above.

Next, the part program analysis unit 16 analyzes a program other than the skip target (step 170),
The analyzed program is stored in the part program execution unit 18
The operation is performed in step 180.

Then, in this step 180, it is determined whether or not all the programs have been operated (step 190), and in the case of the determination NO that the operation is not all finished, the process returns to the skip 100 to continue the operation, while the operation is If the judgment is YES, which means that all operations have been completed, the series of operations is completed.

As described above, according to the present embodiment, since it is possible to select valid / invalid of any continuous information in the skip addition program, even if all of a plurality of continuous blocks are invalid, Eliminates the need to add slash marks.

This makes it possible to reduce the time and effort required to create a program by simply adding a skip start symbol and a skip cancel symbol to the beginning and end of the information to be invalidated.

Also, since only a part of the block can be skipped, it is possible to create a single type of program even for a work piece that has a different shape, which was impossible in the past, as described above. It is possible to eliminate the waste of the program.

[Effects of the Invention] As described above, according to the numerical control device of the present invention, a plurality of consecutive blocks or blocks are arranged in order to invalidate skip target information in an arbitrary area without being aware of a block in a program. You can freely skip only a part of the program in the program.

[Brief description of the drawings]

FIG. 1 is a circuit configuration diagram of a numerical control device according to the present invention, FIG. 2 is a flowchart showing an operation of the numerical control device according to the present invention, and FIG. 3 is a display state of a skip addition program in the present invention. FIG. 4 is a circuit configuration diagram of a conventional numerical controller, and FIG. 5 is an explanatory diagram showing an example of a display state of a part program using a conventional skip function. FIG. 7, FIG. 8, FIG. 8 and FIG. 9 are explanatory views showing the shape of a workpiece to be machined based on a conventional part program, and FIG. 10 is another example of the display state of the conventional part program. FIG. 20 …… Skip additional program storage section 22 …… Skip selection operation section 22a, 22b …… Skip valid / invalid information 24 …… Instruction symbol judgment reading section 24a …… Skip judgment program 26 …… Skip start symbol judgment section 26a …… Skip target information 28 …… Skip cancellation symbol determination unit 28a …… End instruction signal

Claims (1)

(57) [Claims] 1. A program including a plurality of blocks for executing processing, wherein a skip addition program including skip target information designated by a skip instruction symbol is analyzed and
In a numerical control device that executes and automatically controls a machine tool according to whether the skip target information is valid or invalid, at least one of a set of skip start symbol and skip cancel symbol forming a skip instruction symbol is one block. Program storage means for storing the skip addition program added in the middle of the, skip selection means for specifying validity / invalidity of the skip indication symbol added to the skip addition program, and skip target information invalid when the skip indication symbol is valid A numerical control device, comprising: an instruction symbol determination reading unit that validates the skip target information when the skip instruction symbol is invalid.