JP2795884B2 - Machinery controlled by NC program - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a mechanical device controlled by a control device using an NC program.

(Prior Art) An example of a conventional technique of iron plate cutting which is continuously processed by a machine controlled by a control device using an NC program is as follows.

As shown in FIG. 3, an iron plate having a substantially trapezoidal shape and a cut V-groove on the upper side, and having punch holes on both edges of the V-groove,
It is formed by punching or shear cutting from a strip-shaped iron plate material (not shown) (FIG. 3 shows three iron plates Nos. 1 to 3). FIG. 4 shows a schematic configuration diagram of an iron plate cutting machine, which is a mechanical device for forming this. The iron plate cutting machine comprises a feed roll 1 for feeding an iron plate in the direction of an arrow, and V-cut shears 2, 3 (2
), Punches 4 and 5 (2 locations), a cutting shear 6, and a discharge roll 7 for discharging the cut iron plate.

An example of the NC program for controlling this iron plate cutting machine
As shown in the figure (however, S05, 06, T04, 05
There is no such thing). In FIG. 2, N000010 to N000022 are sequence NO
Represents M15, G01, M19, M20, M14, etc. are processing codes, for example, M15 represents a V cut shear part 3, G01 represents feed of various axes, M20 represents a discharge roll, and M14 represents a V cut shear part 2. Represents. In addition, in A + 012300F100, A represents a feed roll, 012300 represents a roll distance, and F100 represents a speed. N000010 to N000021 are called unit machining program blocks, and constitute a process of forming one iron plate.

In order to control the iron sheet cutting machine by the control device using the NC program and cut the iron sheet material into the iron sheet as shown in FIG. 3, the iron sheet material is fed by the feed roll 1 in the direction of the arrow by the conveyer, At the position, a V-groove and a punch hole are formed and cut diagonally to produce an iron plate of a predetermined shape. This iron plate is manufactured in the order of NO.1 ~ 3,
The processing sequence is a mixed NC program that is wrapped between iron plates NO. 1 and NO. 2 and iron plate NO. 2 and 3, respectively, as shown in FIG.

In the above process, if the machine stops due to any trouble after drilling the punch 4 of the iron plate No.2, if the trouble does not change the current iron plate state at all, execute the NC program after removing the cause of the trouble It is possible. However, if the next punch 5 cannot be machined due to a trouble factor, or if the feed roll 1 does not send a predetermined amount of material, it is impossible to continue to execute the NC program.

(Problems to be Solved by the Invention) As described above, in the recovery method when the machine stops due to a trouble in the middle of machining, an operator instructs the machine to an arbitrary restart position (random restart position) of the NC program. The program was restarted from the beginning of the NC program.

In such a method, the workpiece changes the shape and procedure for each processing unit, or the NC program is not a simple continuous repetition of the unit processing program block. If the processing target or processing method is complicated, for example, the program of the object is mixed, the NC program itself becomes complicated. For this reason, it is difficult to correctly indicate the restart position only by the judgment of the worker. In addition, since many reprocessing and cancellation procedures are performed according to the instructions of the operator, the operator needs a plurality of NC program decoding capabilities. These are extremely difficult tasks for field workers.

The present invention has been made in view of these circumstances, and can be re-worked only by automatically restoring mechanical devices or inputting numerical values. It is intended to provide a device.

[Structure of the Invention] (Means for Solving the Problems) The NC program-controlled mechanical device of the present invention has a unit machining program block showing an operation procedure of an execution line for cutting a strip-shaped iron plate into one iron plate having a predetermined shape. A unit machining program block with identification, in which a head identifier symbol indicating a machining start position and a predetermined code are specified in a head program code of the above, and an end identifier symbol indicating a processing end position and the same code as the code are specified in a final program code. And an identification NC program formed by combining a plurality of the identification unit machining program blocks, and a mechanical device for cutting an iron plate controlled by a control device using the identification NC program. When processing is started, the end identification searched first after the execution line at the stop position in the NC program with identification. The code of the child is stored in the control device, then the code of the head identifier is searched and compared with the storage code of the end identifier, and when both codes match, the reprocessing start is executed from the execution line of the head identifier. An instruction is provided to the control device.

(Operation) When the machine stops due to a trouble, the execution line at the stop position is located in the middle of the unit machining program block with identification. The code of the character (end identifier symbol) is stored in the control device. Subsequently, in the previous step, the code of the S character (head identifier symbol) is searched and compared with the above-mentioned stored code, and if they match, the start of processing is instructed in the execution line of the S character code.
If they do not match, the search and collation are continued until the two codes match, and when they match, instruction is given to start machining of the stopped mechanical device (iron plate cutting machine) from the execution line of the head identifier.

(Embodiment) One embodiment of the present invention will be described below with reference to FIGS.

The shape of the iron plate to be cut is the same as that shown in FIG. 3, that is, an iron plate having a substantially trapezoidal shape, a cut V-groove on the upper side, and punch holes on both edges of the V-groove is formed in a band shape (not shown). It is formed from an iron plate material by punching or shear cutting (three iron plates Nos. 1 to 3 are shown in FIG. 3). FIG. 4 shows a schematic configuration diagram of an iron plate cutting machine, which is a mechanical device for forming this. The iron plate cutting machine cuts the feed roll 1 for feeding the iron plate in the direction of the arrow, the V-cut shears 2, 3 (two places), the punches 4, 5 (two places), and the cutting part shear 6. It is formed by a discharge roll 7 for discharging the iron plate.

Next, an example of the unit machining program block with identification constituting the NC program with identifier for controlling the iron plate cutting machine is described in the second section.
Shown in the figure. In the figure, N000010 to N000022 are sequences
Indicates the execution line of NO. M15, G01, M19, M20, M14, etc. are processing codes, for example, M15 represents a V cut shear part 3, G01 represents feed of various axes, M20 represents a discharge roll, and M14 represents a V cut shear part 2. Represents. A + 012300F100 is A
Represents the feed roll, and 012300 represents the roll distance, F1
00 represents the speed. Then, N000010 to N000021 (= S05
To T05) is called a unit machining program block, and constitutes a process of forming one iron plate. This is the same as the conventional unit machining program block.

Then, at the rear of the machining code of the leading program code in the unit machining program block, S05 and S06, in which symbols 05 and 06 are added to the leading identifier S indicating the machining start position, are executed. Sequences NO.N000010 (S05) and N000015 (S06). Similarly, at the end of the processing code of the last program code in the same block, an end identifier T indicating the processing end position
T04 and T05 with reference numerals 04 and 05 added to the execution sequence N
O.N000013 (T04) and N000015 (T05) are respectively attached to form unit machining program blocks with identification. An NC program with identification by combining a plurality of the unit machining program blocks with identification so that the operation procedure of reversing and cutting the shape of the unit machining program blocks with identification in the width direction of the strip-shaped iron plate by front and rear cutting of the iron plate. It is formed. The smaller the number is, for example, 03,02 (not shown), the more the process goes back. FIG. 1 shows a unit machining program block with identification in which the head identifier and its code and the end identifier and its code are described and displayed.

In order to control the iron sheet cutting machine by the control device using the above-mentioned NC program with identification and to cut the iron sheet material from the strip-shaped iron sheet into an iron sheet as shown in FIG. 3, the strip-shaped iron sheet material is conveyed in the direction of the arrow as shown in FIG. The sheet is fed by the feed roll 1, a V-groove and a punch hole are formed at a predetermined position, and the sheet is cut obliquely to produce an iron plate having a predetermined shape. This iron plate is manufactured in the order of NO.1 to NO.3, but since the processing order involves oblique processing between the iron plates, as shown in FIG.
This is a mixed type NC program with identification that is performed by wrapping each between 3 and 3.

Next, in the above process, if the machine stops due to some trouble after machining the punch 4 of the perforated portion of the iron plate No. 2, the operation procedure of the present embodiment for restoring this is as follows. Assuming that the trouble position is the sequence NO.000020 of FIG. 2, first, the end identifier T of the post-process of NO.000020 is searched to find T05 of NO.N000021, and the code “05” is set in the control device. To memorize. Next, going back to the previous process,
When a character is searched, S06 is added to the location of sequence NO.N000015.
There is. When S06 and T05 are collated, the signs “06” and “0”
5 ", and if the S character is further searched for in the previous process, S05 is found at the position of sequence NO.N000010. S05 and T0
In 5, since the codes match (this is the content of the program for cutting one iron plate), the execution of S05 (head identifier) instructs the control device to start pre-machining.

In this way, even if the trouble occurrence is unknown in the execution line in the NC program as in the prior art, the code of the end identifier T character in the identification-added NC program is searched and stored as in the present embodiment, and With the simple collation method of collating the code of the character S at the head of the search, the start of rework can be instructed to the control device. As a result, conventional problems such as a random restart position instruction and restarting from the beginning of the NC program are eliminated. Further, the operation is simple and easy, and the work efficiency is improved.

[Effects of the Invention] As described above, according to the present invention, when a trouble occurs during machining of a workpiece with a machine device controlled by an NC program and the machine device stops and attempts to rework, the stop position is changed. Even if it is unknown in the execution line of the NC program, it is reworked by a simple collation method that retrieves and stores the code of the T character of the end identifier in the NC program with identification, and then collates the code of the S character at the head of the search. Since the start can be instructed to the control device, the conventional problems such as a random restart position instruction and a restart from the beginning of the NC program are eliminated. The operation is simple and easy, and the working efficiency is improved.

[Brief description of the drawings]

1 to 5 show an embodiment of the present invention.
FIG. 2 is a block diagram of a unit machining program with identification, FIG. 2 is a diagram showing execution lines in the unit machining program block with identification,
FIG. 3 is a plan view of the cut iron plate, FIG. 4 is a schematic configuration diagram of a machine for processing the iron plate, and FIG. 5 is a NC program diagram with identification combining unit machining program blocks with identification. S05, S06... Head identifier symbol and its sign, T04, S05.

Claims (1)

(57) [Claims] 1. A head identifier code indicating a machining start position and a predetermined code are specified in a head program code in a unit machining program block indicating an operation procedure of an execution line for cutting a strip-shaped iron plate into one iron plate having a predetermined shape. An identification unit machining program block in which an end identifier symbol indicating the machining end position in the final program code and the same code as the above code are clearly specified; and an identification unit formed by combining a plurality of the identification unit machining program blocks. An NC program and a mechanical device for cutting an iron plate controlled by a control device using the NC program with identification. When machining of the mechanical device is started, execution of a stop position in the NC program with identification is performed. The code of the end identifier found first afterward is stored in the control device, and subsequently, the code of the head identifier is searched. The checked against the stored code end identifier, when both codes match, NC program control machinery instruction Rework begins execution line of the head identifier is characterized in that applied to said control device Te.