JPH05303421A - Flexible production system for working metal mold - Google Patents

Abstract

PURPOSE:To allow a metal mold working flexible production system to correspond to various operation systems such as memory operation and schedule operation. CONSTITUTION:A numerical control device 7 receives working program selecting information and an identifier(ID) for identifying a transfer system and an operation system respectively from a working program selecting part 17 and a transfer identification transferring part 18 in an FMS control device 5, and at the time of receiving a start command from the device 5, forms a program file name request by a file name requesting part 19 based on the selecting information and transmits the formed request to a direct control device 10. A working program transfer part 16 in the device 10 searches a program file and transfers the searched file to the device 7 in accordance with the ID and the device 7 executes operation based upon the ID.

Description

Detailed Description of the Invention

The present invention relates to a plurality of numerically controlled machine tools, a numerically controlled device, a work transfer device, and an FMS for controlling and controlling these devices.
The present invention relates to a flexible manufacturing system (hereinafter, referred to as FMS) including a control device and the like, and particularly to a mold processing FMS that handles a large-capacity processing program peculiar to a mold and controls while distributing data to a numerical controller.

[0001]

2. Description of the Related Art In an FMS comprising a plurality of numerically controlled machine tools, a numerically controlled device, a work transfer device, and an FMS control device for controlling and controlling these, a large-capacity machining program is used in the die machining field. Although automation has been delayed due to the fact that it is necessary to handle and the processing time is relatively long, some FMSs for mold processing are being put to practical use due to the demand for unmanned processing. Conventionally, to achieve these,
A dedicated communication line for sequentially transferring the machining program to the numerical controller and an I / O line for transmitting and receiving a signal for controlling the FMS are provided, and the FMS is connected through these lines.
A system in which the control device controls the FMS is generally used. Then, the numerically controlled machine tool can only perform a buffer operation for performing machining while receiving machining program data, and can transmit only the main program.

However, in die machining, in addition to machining with a large-capacity machining program composed of minute blocks, machining with a relatively short machining program such as drilling and contour machining, or the machining program is divided into several. However, various processing methods such as processing by a schedule program in which they are combined and ordered are processed. Therefore, the conventional technology cannot support all machining methods, and among various machining methods, automation and unmanned operation are aimed at machining by a large-capacity machining program composed of minute blocks. Came.

FIG. 8 is a block diagram showing an example of a general FMS. The FMS is a numerically controlled machine tool 7 with a plurality of tool magazines 6, a warehouse 3 for storing materials, semi-finished products and finished products, and works. Of a workpiece transfer device 1 for distributing workpieces to each machine, an APC (automatic pallet changer) 2 for transferring workpieces between the workpiece transfer device 1 and the numerically controlled machine tool 2, a setup station 4 for setting materials and collecting finished products, and It is composed of an FMS control device 5 which manages the whole. FIG. 7 is a configuration diagram showing an example of a control unit of a conventional FMS for die machining, which is an FMS control unit 5 for centrally managing the FMS 5, a numerical control unit / numerical control machine tool 7, and a dedicated transmission of a machining program. Communication line 8 and I / O line 9 for handling control information.

Next, referring to FIGS. 7 and 8, the conventional technique will be described in detail with reference to the block diagram of FIG. 5 and the flowchart of FIG. Work determination unit 13 in the FMS controller 5
Confirms that the carry-in side of the APC 2 of the numerically controlled machine tool 7 shown in FIG. 8 is empty and the next work can be carried (step S20), the highest priority is given to the production plan data registered in advance. High work is searched, assigned to the corresponding numerically controlled machine tool 7, and a transfer command is sent to the work transfer device 1 (step S21). When the machining of the work is completed by the corresponding numerically controlled machine tool 7 (step S2
2), the NC activation unit 14 transmits the activation command STC to the numerical control device 7 via the I / O line 9 of FIG. 7 (step S).
23).

Numerical control unit 7 which receives the start command STC
The transfer request unit 15 opens the communication line 8 by the line open request (step S24), and transmits the transfer request PSC of the machining program WP to the FMS controller 5 via the communication line 8 (step S25). When the FMS controller 5 receives the transfer request PSC, the machining program transfer unit 16 prepares to transfer the corresponding machining program WP (step S26), and starts the transfer of the machining program WP via the communication line 8 (step S26). S27). And
The numerical controller 7 sends a command to the numerically controlled machine tool 7 while receiving the machining program WP, and the numerically controlled machine tool 7 starts machining a workpiece (step S2).
8).

[0006]

In the prior art, since the numerical control device only receives the NC start command from the FMS control device, the type of machining program to be received cannot be recognized in advance, and Since it does not have a transfer method recognition means, it can only support buffer operation by sequential transfer. Therefore, it is limited to the buffer operation of the main program, and various machining methods used in the field of die machining, such as memory operation by batch transfer used in punching and contour machining, dividing the machining program, There is a drawback that it cannot support various operation methods such as schedule operation that specifies the processing order with a schedule program.
There was a problem that the processing target of was limited. The present invention has been made in view of the above problems, and an object of the present invention is to provide an FMS for mold processing that does not limit the processing target and can be applied to various operation systems.

[0007]

The present invention is directed to a plurality of numerically controlled machine tools, a numerically controlled device, a work transfer device, an FMS control device for controlling and controlling these, and a direct control for storing and distributing a machining program. The present invention relates to a mold processing FMS, and the above object of the present invention is applicable to the FMS control device, which controls the numerically controlled machine tool and the work transfer device according to production plan data. A work determining means for determining which work is to be conveyed to the numerically controlled machine tool, and a machining program name and a main program, a schedule program, etc. at the time when the machining of the work is completed and the machining waits for the next work. Program selection for notifying the numerical control device of program selection information consisting of program type via the first communication line And an identifier for identifying whether the machining program is collectively transferred to the numerical control device for memory operation or is sequentially transferred and is buffered for machining while receiving the machining program. Transfer identification means for notifying the numerical control device via the first communication line, and NC for transmitting a start command of the numerical control device to the numerical control device via the first communication line.
A first control means for storing program selection information from the program selection means in the numerical control device;
Storage means, second storage means for storing the identifier from the transfer identification means, and a machining program name and a program type based on the program selection information, which receives a start command from the NC start means. Create a program name request with the program file name as the second
File name requesting means for transmitting to the direct control device via the communication line, and the direct control device receives the program file name request from the file name requesting means and sends the machining program to the second communication. This is achieved by providing a machining program transfer means for transferring according to the identifier via a line.

[0008]

In the FMS for die machining of the present invention, since the numerical control device can recognize the machining program name, program type and transfer method in advance, it can be applied to various operation methods such as memory operation and schedule operation by batch transfer. As a result, the processing target of the mold processing FMS is not limited.

[0009]

FIG. 4 is a block diagram showing an example of a control unit of an FMS for die machining of the present invention in correspondence with FIG. 7, and an FMS control unit 5 for centrally managing the FMS 5, a direct control for transferring a machining program. The controller 10, the numerical controller / numerical controller machine tool 7, the FMS controller 5 and the numerical controller 7 are coupled to each other to transmit and receive control information for controlling the FMS and actual data such as measurement data and tool information. The first communication line 11 and the second communication line 12 for connecting the direct control device 10 and the numerical control device 7 and transferring the machining program.

An example of the mold processing FMS of the present invention is shown in FIG.
With reference to FIG. 8 and FIG. 8, a detailed description will be given according to the block diagram of FIG. 1 and the flowchart of FIG. When the work determination unit 13 in the FMS controller 5 confirms that the transfer side of the APC 2 of the numerically controlled machine tool 7 shown in FIG. 8 is empty and the next work can be transferred (step S20), it is registered in advance. A workpiece having the highest priority is searched from the produced production plan data, assigned to the corresponding numerically controlled machine tool 7, and a transportation command is sent to the workpiece transportation apparatus 1 (step S21). When the machining of the work is completed by the corresponding numerically controlled machine tool 7 (step S22), the machining program selection unit 17 in the FMS control device 5 determines the machining program name and program type via the first communication line 11 of FIG. The machining program selection command PSD is transmitted to the numerical controller 7 (step S30), and the numerical controller 7 stores the received machining program selection command PSD in the memory (step S3).
1).

Then, the transfer identification transfer unit 18 in the FMS control device 5 receives the processing program by batch transfer and performs processing after registering it in the memory for "memory operation" or processing while receiving the processing program by sequential transfer. The identifier SID for identifying whether the "buffer operation" is performed is transmitted to the numerical control device 7 via the first communication line 11 (step S
32), the numerical controller 7 stores the identifier SID in the memory (step S33). Next, the FMS controller 5
The NC starting unit 14 sends the start command STC to the numerical controller 7 via the first communication line 11 (step S3).
4).

When the numerical controller 7 receives the start command STC, the file name request unit 19 reads the machining program name and the program type from the memory, and sets the machining program name and the program file name constituted by the program type as contents. A program file name request PFSC is created, and the direct control device 10 is connected via the second communication line 12.
(Step S35). Upon receiving the program file name request PFSC, the machining program transfer unit 16 in the direct control device 10 searches for the corresponding program file name and prepares to transfer the machining program WP according to the identifier SID (step S36). The WP is transferred to the numerical controller 7 via the second communication line 12. (Step S37).

The numerical controller 7 uses the identifier SID from the memory.
Is read, and if the identifier SID indicates the buffer operation, a command is sent to the numerically controlled machine tool 7 while receiving the machining program WP, and machining of the work is started (steps S38 to S40). On the other hand, in step S38,
If the identifier SID indicates the memory operation, the numerical controller 7 registers all the machining programs WP in the memory,
The machining program WP is read from the memory and interpreted, and a command is sent to the numerically controlled machine tool 7 to start machining of the work (steps S41, S42).

Next, a specific example of the system of the present invention will be described with reference to FIG. Now, in the schedule data 50 registered in the FMS controller 5, as shown in the figure, the machining program name is “ABC” and the program type is “MI.
It is assumed that the transfer method is instructed to be "N" (means the main program) and "collective".
Transmits a machining program selection command and an identifier for identifying the memory operation or the buffer operation based on the schedule data 50 to the numerical controller 7 via the first communication line. Then, the contents of the machining program selection command "A
BC. MIN ”is stored in the program selection command memory 51 via the path 60, and the value“ 1 ”meaning the content“ collective ”of the identifier is stored in the memory / buffer operation identifier memory 52 via the path 61.

Next, when a start command is transmitted from the FMS controller 5 to the numerical controller 7, the numerical controller 7 causes the program selection command memory 51 to read the machining program name "AB".
C "and the program type" MIN "are read, and the program file name" ABC. A program file name request having "MIN" is created, and the second communication circuit 12 is routed through the path 62.
To the direct control device 10 via. Direct control device 10 that received the request for program file name
Searches for the program file name stored in the external storage device 53, and the program file name “ABC.
2nd communication line 1 by reading the processing program of "MIN"
The transfer to the numerical controller 7 via 2 is started.

The numerical controller 7 routes the machining program transferred from the direct controller 10 according to the information in the memory / buffer operation identifier memory 52, that is, if the identifier is the value "0" which means the buffer operation. While being read into the operation buffer 54 via 64, the NC program interpreting unit 56 interprets it and sends an axis movement command 57 to the numerically controlled machine tool for machining. If the identifier is the value “1” which means the memory operation, the numerical controller 7 stores the machining program in the memory 55 via the path 65,
The NC program interpreting unit 5 is continuously written into the memory 55 until all the machining programs are transferred from the direct control device 10, and when the machining programs are registered, the machining programs are gradually read into the operation buffer 54 via the route 66.
6, the axis movement command 57 is sent to the numerically controlled machine tool for machining.

[0017]

As described above, the mold processing FMS of the present invention
According to the above, various operation methods such as memory operation by batch transfer of machining programs used for drilling and contour machining, schedule operation in which machining programs are divided and operated according to the machining order specified in the schedule program are supported. become able to. Therefore, it becomes possible to deal with a variety of processing methods of die processing, and it is possible to realize highly efficient production.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a mold processing FMS of the present invention.

FIG. 2 is a flowchart explaining the system of the present invention.

FIG. 3 is a block diagram showing a specific example of the system of the present invention.

FIG. 4 is a configuration diagram showing an example of a control unit of the system of the present invention.

FIG. 5 is a block diagram showing an example of a conventional FMS for mold processing.

FIG. 6 is a flowchart illustrating a conventional system.

FIG. 7 is a configuration diagram showing an example of a control unit of a conventional system.

FIG. 8 is a configuration diagram showing an example of a general FMS.

[Explanation of symbols]

 10 Direct Control Device 11 First Communication Line 12 Second Communication Line 17 Machining Program Selection Section 18 Transfer Identification Transfer Section 19 File Name Request Section 50 Schedule Data 51 Program Selection Command Memory 52 Memory / Buffer Operation Identification Memory

Claims (1)

[Claims] 1. A plurality of numerically controlled machine tools, a numerically controlled device, a work transfer device, and an F for controlling and integrally managing these.
In a flexible production system for die machining, which comprises an MS control device and a direct control device for storing and distributing a machining program, the FMS control device has the numerical control machine tool and the work transfer device according to production plan data. Control means for deciding which work is to be conveyed to the corresponding numerically controlled machine tool, and the machining program name and main Program selection means for notifying program selection information consisting of program types such as programs and schedule programs to the numerical control device via the first communication line, and for transferring the machining program to the numerical control device in a lump and performing memory operation. Or transfer sequentially and process while receiving the processing program Transfer identification means for notifying the numerical control device of an identifier for identifying whether to perform the buffer operation via the first communication line, and a start command of the numerical control device via the first communication line. An NC starting means for transmitting to the numerical control device is provided, and the numerical control device stores first storage means for storing program selection information from the program selection means, and an identifier from the transfer identification means. A second storage means, and a program name request containing a program file name composed of the machining program name and the program type based on the program selection information in response to a start command from the NC start means, And a file name requesting means for transmitting the file name to the direct control device via the second communication line. Flexible manufacturing system for die machining, characterized in that it comprises a machining program transfer means for transferring in accordance with a program file name request received the machining program the identifier via the second communication line from the calculated means.