JPS59183410A - Machine interface device - Google Patents

Abstract

PURPOSE:To attain the group control of NC devices with no use of a paper tape serving as a medium by providing a machine interface device to connect a high- order computer system and the NC device. CONSTITUTION:In a group control operation mode a down-loading indication of a processing program is given to a machine interface device 13 from a high- order computer system 12 via a high-order interface circuit 20. When the permission is given to the down-loading operation, the processing program receives the down-loading operation from the system 12. Then the device 13 reports the end of the down-loading operation when the processing program is stored in a memory 16. Then the search end is reported when a search indication of the processing program is given from the system 12. Then the device 13 gives an automatic start signal to an NC device 14 via a contact interface circuit 19 and receives a BTR start request from the device 14 via a BTR interface circuit 17. A CPU 15 sends the processing program indicated by the system 12 to the device 14 with each character at and after the head block of said program via the circuit 17.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides direct numerical control (DNC) from a host computer system to a numerical control device that does not have an interface function with the host computer system.
The present invention relates to a mechanical interface device for mechanical control.

The first type of conventional numerical control device (hereinafter referred to as NC device)
There was something shown in the figure. In FIG. 1, 1 is a central processing unit that decodes and executes instructions, 2 is a memory that stores programs and data, and 3 is a character display board that sets data, edits programs, and displays the status of the NC device. 4 is an interface circuit for the character display board 3; 5 is a paper tape reader for reading the Kanji program depending on the presence or absence of holes in the paper tape; 6 is an interface circuit for the paper tape reader 5; 7 is the interface circuit for reading the Kanji program stored in the memory 2 on the paper tape. 8 is an interface circuit for the paper tape puncher; 9 is a machine tool to be controlled by the NC device; 10 is a machine tool control device for controlling the servo motor, etc. of the machine tool 9; Machine 9
This is a contact interface and a -face circuit for interfacing with the external device (not shown).

The manual mode is a mode in which the machine tool 9 is manually moved by selecting the feed rate, movement axis, movement amount, etc.

Automatic modes include tape operation, memory operation, and manual data entry operation.

During tape operation, the desired program number and sequence number are displayed on the character display board 3.

After inputting the block number, etc., the paper tape reader 5 reads the p-gram on the paper tape via the interface circuit 6 to search for the desired p-gram.

Normally, in order to operate the machine tool 9 smoothly, two rough feeders 7 are provided on the memory 2 to pre-read the Kani program. The content of one block of the searched desired program is stored in the buffer area 7 for pre-reading, and the paper tape reader 5 is stopped. Next, when the automatic start button switch of the NC device (not shown) is pressed, the contents stored in the pre-reading buffer area are moved to the working buffer area 7, and the 11,172 minutes stored in the working buffer area are The operation of the machine tool 9 is controlled by the machine tool control device 10 according to the machine tool program. On the other hand, when the pre-reading buffer x-rea becomes empty, the paper tape reader 5 is activated, and the data is stored in the pre-reading buffer 7 area, which is an additional program for the next clock, via the interface circuit 6.

When the processing operations for 11,172 minutes stored in the working buffer area are completed, the additional p-grams for the next block stored in the look-ahead buffer area are transferred to the working buffer 7.
Perform area busy processing work and store the next block's worth of processed programs in the look-ahead buffer 7 area. Thereafter, this operation is repeated to complete the machining operation.

In the memory operation, a desired program μgram is set from the character display board 3, and a program stored in the memory 2 is searched. Thereafter, in the same way as the tape operation described above, when the automatic start button switch (not shown) is pressed, the machine tool 9 will start according to the searched machine program.
The operation is controlled.

In the manual data input operation, one block of added programs is manually registered in the memory 2 from the character display board 3 via the interface circuit 4. Next, when the automatic start button switch of the NC device (not shown) is pressed, the 11,172-minute program that has been registered in memory 2 is read out to the buffer memory, and the machine tool controller 10Vc reads out the program of 11,172 minutes registered in memory 2 to the buffer memory. 9 operation control.

In the editing mode, the P-gram written on the paper tape is read by the paper tape reader 5, and the interface circuit 6
The data is stored in the memory 2 via the . Additionally, the character display board 3 passes through the interface circuit 4 the Kanib program stored in the memory 2, and modifies, inserts, or deletes it. of(
to do so.

Since the conventional NC device is configured as described above, it is necessary to create a paper tape and store the cannibal program in the memory 2 using the paper tape reader 5 every time there is a change in the cannibal program. When a Canadian program is modified in an NC device, paper tape is required as a medium, such as punching the paper tape with a paper tape punch, in order to register the modified program in the host computer system, and the operator always intervenes. had to be processed.

This invention was made in order to eliminate the drawbacks of the conventional NC device as described above.
It is an object of the present invention to provide a machine interface device that makes it possible to perform group management control of NC devices by connecting the devices, eliminating the need for paper tape as a medium. The present invention will be explained below with reference to the drawings.

FIG. 2 shows an embodiment of the present invention.

In this figure, 12 is a host computer system, 13 is a machine interface device according to the present invention, and 14 is an NC device. In the machine interface device 13, 15 is a central processing unit that decodes and executes instructions, 16 is a memory that stores the program program and data, and 17 is a BTR (Behind Tape) that transfers program program to the NC device 14 as a paper tape image. Reader
) Interface circuit, 1B is the NC device 1
4 to receive the Canadian program as a paper tape image B
T P (BehindTape Puncher
) An interface circuit 19 is a contact interface circuit that inputs and outputs control signals and status signals to and from the NC device 14.

Reference numeral 20 denotes a higher-level interface circuit that communicates data with the higher-level computer system 12.

Next, the NC device 14 will be explained. 1 to 11 are all (same) as the conventional NC device. 21 transmits and receives the program from the machine interface device 13 to the NC device 1.
This switch is used to select whether to perform group management control on the paper tape reader 5 or to send and receive the cannibal program via the paper tape reader 5 and paper tape puncher 7. Note that 22 is the machine interface device [operation mode changeover switch 13;
3 is a pointer operation changeover switch.

Next busy action will be explained. When the NC device 14 is in the tape operation mode and the selector switch 21 selects the machine interface device 13, the following operations are possible.

The operation mode of the machine interface device 13 is DNC.
There are a driving mode and a local driving mode, which are selected by the driving mode changeover switch 22.

In the DNC operation mode, as shown in FIG. 3(a), the machine interface device 1 is
3 is given an instruction to download the Kaniboogram via the upper interface circuit 20. The machine interface device 13 that received the download instruction,
If it is possible to download, please answer if it is possible to download.
Further, if the download is possible, a download possible answer is sent to the host computer system 12 via the host interface circuit 20.

If the answer is downloadable, the upper computer system 1
2, the computer program is downloaded to the machine interface device 13 via the upper interface circuit 2o, and stored in the memory 16Vc of the machine interface device 13.

When the data is stored in the memory 16Vc without any errors being detected, the host computer system 121C is notified that downloading is possible through the host interface circuit 20.

When the processing start conditions are completed in the host computer system 12 during the busy period, as shown in FIG. Instructions are given. Machine interface device 1
The central processing unit 15 of No. 3 checks whether the search-instructed knife program is stored in the memory 16, and if it is stored, sets a pointer to the first program of the knife program. Pointer set completed busy upper interface circuit 20'& 1st place computer system 1
Report the completion of the Canadian program search to 2.

During busy periods, processing instructions are given to the machine interface device 13 from the host computer system 12 via the host interface circuit 20, so the machine interface device 13 automatically starts up via the contact interface circuit 19 to the NC device 14. When a signal is given, the NC device 14 sends the BT to the machine interface device 13.
BTR activation request (
FWD), the central processing unit 15 of the machine interface device 13 sends one character from the first block of the Canadian program specified by the host computer system 12 to the NC device 14 via the BTR interface circuit 17.

Similar to the tape operation described above, the NC device 14 connects the machining program device 13 via the interface circuit 6 to the BT interface circuit 11.
Since the R activation request (FWD) is given, the central processing unit 15 of the machine interface device 13 reads out the p-gram from the block to which the pointer is pointed, and transfers it to the NC device 14 via the BTR interface circuit 17. .

When the NC device 14 searches for the program number, sequence number, and block number input from the character display board 3, it stops sending the BTR activation request (FWD) to the machine interface device 13 and sends the searched bootbook to the buffer 7 area. At the same time, the searched contents are displayed on the character display board 3.

Thereafter, local operation becomes possible by pressing an automatic start button switch (not shown) of the NC device 14.

When the operation of the NC device 14 is stopped due to an NC alarm, the operation mode of the machine interface device 13 is switched to the local operation mode and the NCC device 14 is reset.
A reset signal R is applied to the contact interface circuit 19. This reset signal R causes the machine interface device 13 to move the pointer P to the first block of the Canadian program being executed as shown in FIG. After searching, the processing operation can be completed by pressing the lock of the NCC device 14.

In the case of trial cutting operation, the operator switches the operation mode of the machine interface device 13 to the local operation mode, and uses the above-described method to input the changes in the memory 16 of the machine interface device 13 from the character display port 3 of the NC device 14. Search for Nibrogram. Next, the search completed cannibal program is transferred from the BTR interface circuit 17 to the NC device 14 via the reinterface circuit 6.
Store it in memory 2 of , and perform trial cutting in memory operation.

In addition, when the cutting nib p-gram stored in the memory 2 of the NC device 14 is corrected during the trial cutting operation, as shown in FIG. 4(b)
As shown in the IC, the character display board 3 of the NC device 14 sets the program number of the p-gram to be outputted, and the interface circuit 6 sets the program number of the p-gram to be outputted from the character display board 3 of the NC device 14.
The Canadian program is transferred along with the BTR activation request to.

The machine interface device 13 checks whether the program number transferred from the NC device 14 is a trial-cut Canadian Niprogram. Receives the new program and stores memory 1.
6. Update the Canadian program.

If there is no matching program number, it is registered in the memory 16 as a new p-gram. In either case, if there is no program area during registration or update, it is reported to the NC device 14 as an error.

The memory 16 of the machine interface device 13 can store a plurality of p-grams. Therefore, Fig. 5(b)
), the pointer operation changeover switch 23 is set to RE.
When PEAT is selected, BT is sent from the NC device 14 after processing is completed.
When the R activation request (REV) is given, the central processing unit 15 of the machine interface device 13 moves the pointer PY to the first block of the additional p-gram (first p-gram) that is being executed, but when selecting NEXT, the central processing unit 15 of the machine interface device 13 moves the pointer PY will not be moved. Next, when a BTR activation request (FWD) is given, the pointer P is moved to the first block of the next stored Canadian program (second program).

By such operation, the mechanical ink-face device 1
This makes it possible to search a plurality of Canadian programs stored in the memory 16 of No. 3.

As explained above, according to the machine interface device of the present invention, it is possible to connect an NC device that does not have an interface function with a host computer system to a host computer system. The apparatus can be controlled in groups at low cost, and the memory of the machine interface apparatus can be used to compensate for the lack of memory capacity of the NC apparatus.

[Brief explanation of the drawings] Figure 1 is a block diagram showing the configuration of a conventional NC device, and Figure 2 is a block diagram showing the configuration of a conventional NC device.
The figure is a block diagram according to an embodiment of the present invention, and FIG.
), (b), (c), FIGS. 4(a) and (b) are flowcharts showing the outline of the operation, and FIGS. 5(a) and (b) are diagrams showing the operation of the pointer. In the figure, 1 and 15 are central processing units, 2 and 16 are memories, and 3
is a character display board, 4°6.8 is an interface circuit, 5 is a paper-tape reader, 7 is a paper tape puncher, 9 is a machine tool, 10 is a machine tool control device, 1
1.19 is a contact interface circuit, 12 is a host computer system, 13 is a machine interface device, 14 is an NC device, 17 is a BTR interface circuit, 18 is a BTP interface circuit, 20 is a host interface circuit, 21 is a changeover switch 5.22 23 is an operation mode changeover switch, and 23 is a pointer operation changeover switch. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa (2 others) H. Hachitoji'#, +'p 55 Written amendment to Sonotaku procedure (voluntary) 1. Indication of the incident: Patent Application No. 58-571363 2,
Name of the invention Machine interface device 3, Representative Hitoshi Katayama of the person making the amendment 4, Agent (contact information υ3 (213') 3421'I: Ngakube) 5,
Detailed explanation of the invention column 6 of the specification to be amended, contents of the amendment (1) “Buffer memory” on page 5, lines 10-11 of the specification
is corrected as "buffer area". (2) Similarly, on page 12, line 7, "impossible answer" is amended to "impossible answer." (3) Similarly, "interface circuit 6" in lines 6-7 of page 15 is corrected to "interface circuit 8." (4) Similarly, on page 15, lines 8 to 9, "BTR activation request to rBTR interface circuit 18" is corrected to "BTP activation request to BTP interface circuit 18." (5) Similarly, on page 16, line 17, “It becomes possible to pay.”
It becomes possible. ” he corrected. I"2

Claims (1)

[Claims] A host interface circuit that sends and receives downloads, uploads, and searches of the Canadian program to the host computer system, control commands for the numerical control device, and status signals of the numerical control device, and a paper tape image of the Canadian program to the numerical control device. a BTR interface circuit that transfers the computer program in the numerical control device in the form of a paper tape image, and a contact interface that sends and receives control signals of the numerical control device and status signals of the numerical control device. A machine interface device comprising: a circuit; a memory that stores the program; and a central processing unit that controls each of the parts.