JP2728256B2 - Numerical control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a numerical control method, and in particular, transfers NC data from an external source to an NC control unit, and uses the transferred NC data to perform NC control.
The present invention relates to a numerical control method for performing machining.

<Prior art> A numerical control method for transferring predetermined NC program data from a program file unit or an automatic programming device storing a large number of NC programs to an NC control device and performing NC machining using the transferred NC program data is known. is there.
In such a numerical control method, for example, an NC program created by a host (automatic programming device) 1 (see FIG. 4) is stored in a program file unit (mass storage device) 2 having a computer configuration, and an NC control device 3
If the NC program request command and the predetermined NC program name are output to the mass storage device 2, the mass storage device 2 reads the NC program corresponding to the NC program name and
Transfer to the control device 3. When the NC control device 3 is in the DNC operation mode, the processor 3a controls the input NC data immediately and performs NC machining by moving the NC machine tool. On the other hand, if the mode is the NC data registration mode, the processor 3a registers the input NC data in the RAM 3b inside the NC, and then starts the memory operation to call the NC data one block at a time from the RAM to perform NC control.

<Problems to be Solved by the Invention> As described above, in the conventional method, the external NC program (NC data) registration is performed in the dedicated NC data registration mode. Therefore, it is not possible to register NC data by command while executing NC control,
There was a problem that NC machining was not possible.

By the way, a repeated pattern of the same processing often appears in the NC data. For example, as shown in FIG.
The same processing pattern (NCD1 to NCD
3) There are three times, so it takes time to transfer the NC program, and it becomes impossible to perform NC processing more and more quickly. Thus, the main program can be simplified if the same processing pattern is created in advance as a subprogram. However, in this case, it is necessary to transfer the subprogram (NC data) in the NC data registration mode in advance and register it in the NC internal memory. There was a problem that processing was not possible.

Accordingly, an object of the present invention is to provide a numerical control method capable of registering transferred NC data in an NC internal memory in parallel with the NC operation and performing efficient NC machining.

Another object of the present invention is to provide a numerical control method that does not require a subprogram to be created in advance even when the same processing pattern is included.

<Means for Solving the Problems> According to the present invention, the above-mentioned problem is solved by a first NC command of registration start and a second NC of registration end in NC data transferred from outside.
Means for inserting a third NC command for reading and executing registered NC data while inserting the command, NC data sandwiched between the first NC command for starting the registration and the second NC command for ending the registration Means for numerically controlling the NC data by adding a program number to the NC data and registering the program in the memory of the NC control unit.The NC data is called from the memory by designating the program number by the third NC command. This is achieved by means of performing numerical control using NC data.

<Operation> NC data is transferred from the outside to the NC controller, and the transferred
In the numerical control method that performs NC machining using NC data, the first of registration start in NC data transferred from outside
In addition to inserting the NC command and the second NC command of the end of registration, a third NC command for reading and executing the registered NC data is inserted, and the first NC command of the registration start and the second NC command of the registration end are inserted. NC
Numerical control is performed using the NC data sandwiched between the commands, and a program number is assigned to the NC data and registered in the memory of the NC control unit. Retrieve data from memory and
Performs numerical control using NC data.

<Example> Fig. 1 is a schematic explanatory view of the present invention.

PRGF is the program name “O1 registered in the external storage device.
0 ”NC program. In the NC program PRGF, the NC command for registration start (registration start command “Gxxxxx”) SO
C, NC data PND to register in NC internal memory, NC after registration
Command (registration end command "G $") EOC is inserted. CMP is a command for calling the NC data PND registered in the NC internal memory. In the registration start command SOC and the registration end command EOC, “Gxx” and “G △△” are G function commands for starting and ending registration, respectively, and “xx” and “△”.
“△” is a two-digit predetermined numerical value. “○ □□” in the registration start command is the subprogram name given to the NC data to be registered.

FIG. 2 is a block diagram of an NC device embodying the present invention.

101 is a processor, 102 is a program memory (ROM) for storing a control program, and 103 is a RAM for storing processing results and an NC program being executed. The processor 101 is provided with a registration flag Fm for determining whether to register NC data.

105 is a CRT & MDI device having a CRT 105a and a keyboard 105b.

106 is an NC data input device for inputting NC data from the NC tape NCTP, 107 is an axis controller having a pulse interpolator and each axis servo unit, and 108 is an interface between the machine tool and the NC device. 109 is an operation panel, 110 is a machine tool, 111 is an interface for exchanging data with an external storage device,
Reference numeral 112 denotes an external storage device having a computer configuration, which transfers an NC program registered in response to a request from the processor 101 via the interface 111.

FIG. 3 is a flowchart of the numerical control process of the present invention. Hereinafter, the numerical control method of the present invention will be described with reference to the flowchart of FIG. It is assumed that the NC program PRGF shown in FIG. 1 is already stored in the external storage device 111.

Set to the DNC operation mode (direct NC operation mode) and operate the NC program name “O1
When 0) is specified and execution of NC control is commanded, processor 1
01 transfers the NC program request command and the NC program name to the external storage device 112 via the interface 111. As a result, the external storage device 112 stores the requested NC data PRGF
Are transferred to the NC unit one block at a time (step 201).
If one block of NC data is received, the processor 101
It is determined whether or not the C data is a registration start command “G ×× □□”) SOC (step 202). If it is a registration start command SOC, the registration flag Fm is turned “on” (step 203), and the next one block is set. A request is made to the external storage device 112, and the processing from step 201 onward is repeated. When the registration flag Fm is turned “on”, the NC data is registered in the RAM 103 with the subprogram name “○ □” instructed by the registration start command SOC until it becomes “off”.

On the other hand, if it is not the registration start command in step 202, then it is determined whether or not the registration end command is “G △△” EOC (step 204). If not, it is determined whether the registration flag Fm is “on”. Judgment (Step 20
5) If "ON", register the requested one block of NC data in RAM 103 and execute NC control (steps 206 and 207).

Next, the processor 101 determines whether or not the NC data is the NC program end command “M30” (step 208). If it is the end command, the processor 101 ends the numerical control process.
The NC data of the next block is requested to the external storage device 112, and the processing from step 201 is repeated.

On the other hand, in step 205, the registration flag Fm is "off".
If it is, the process from step 207 is repeated without registering in the RAM 103.

If the registration end command is issued in step 204, the registration flag Fm is turned off (step 208), and the processing from step 201 is repeated thereafter. Note that the NC data PND of the subprogram name “○ □□” from the registration start command to the registration end command registered in the RAM103 is stored in the RAM103 when the subprogram call command “M98P □□” CMP is executed in step 207.
And is NC controlled.

In the above, an example of registering a part of the NC program has been described.
Also in the case of registering in the RAM 103, if a registration start command is added at the head of the NC program and a registration end command is added at the end, it is possible to perform registration while executing NC control in the same manner.

<Effect of the Invention> As described above, according to the present invention, the registration start NC command and the registration end NC command are inserted into the NC data transmitted from the outside, and the registration start NC command and the registration end NC command are inserted. It is configured to register the transferred NC data in the memory of the NC control unit while performing NC control, so that the NC data to be transferred can be registered in the NC internal memory in parallel with the NC operation, so each work has to be done separately The time can be reduced as compared with the case of performing.

In the case of NC data where the same processing is repeated, the NC data is referred to as NC program name (subprogram name)
Is configured to register in the NC internal memory with
Thereafter, the registered NC data can be called only by the subprogram call command, so that it is not necessary to secure a large memory area, and therefore, the management of the NC data becomes easy.

[Brief description of the drawings]

 FIG. 1 is a schematic explanatory view of the present invention, FIG. 2 is a block diagram of an NC apparatus for carrying out the present invention, FIG. 3 is a flowchart of the processing of the present invention, and FIG. 4 to FIG. It is. SOC: Registration start command, EOC: Registration end command, Fm: Registration flag, 101: Processor, 103: RAM, 111: Interface, 112: External storage device

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-49-119085 (JP, A) JP-A-49-70283 (JP, A) JP-A-62-49404 (JP, A)

Claims (1)

(57) [Claims] 1. A numerical control method for transmitting NC data from the outside to an NC control unit and performing NC machining using the transferred NC data, wherein a first registration start of registration in the NC data transferred from the outside is performed. Along with inserting the NC command and the second NC command of the end of registration, a third NC command for reading and executing the registered NC data is inserted, and the first NC command of the registration start and the second NC command of the registration end are inserted. Numerical control is performed using the NC data sandwiched between the NC commands, and a program number is assigned to the NC data and registered in the memory of the NC control unit. The program number is designated by the third NC command.
A numerical control method characterized by retrieving NC data from a memory and performing numerical control using the NC data.