JPH02172646A - Numerical control device - Google Patents

Abstract

PURPOSE:To store a tool into each pot of a tool magazine in short time without any mistake by respectively converting the bar code for tool read by a bar code reading means into the code for machine tool and the bar code for pot into a pot number and adding the function storing the both in their mutual correspondence to an NC device. CONSTITUTION:A bar code reading means 8 reading the bar code 2 for tool of each tool 1 and the bar code for pot fitted to each tool pot of the tool magazine 4 provided on a machine tool 3 is connected to an NC device 7. At this time, the bar code 2 for tool read by a bar code reading means 8 is converted into the specific code for machine used for working and also the bar code for pot is converted into a pot number. Moreover, the function storing these code for machine and pot number in their mutual correspondence is added inside the NC device 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a numerical control (NC) device used in machining operations.

(Prior art) In the setup work of an NC machine tool, each tool to be used next is assembled, and the lengths of these tools are all set.
The long side is determined. Then, the deviation of this measured value from the set value is determined, and this deviation is taken as the correction value for each tool. Next, the T-code for identifying these tools by the NC device and the position of each pot when stored in the tool magazine are determined, and these T-codes, pot positions, and correction values are written in the tool data sheet. Each tool and tool data sheet are then transported to the installation position of the NC machine tool, where each tool is manually stored in the tool magazine according to the respective pot position filled in the tool data sheet during the previous machining operation. Replaces each used tool. On the other hand, in the NCW position, correction values entered in the tool data sheet are inputted, as well as information on the positional relationship between each pot in the tool magazine and each stored tool, a cannibal program, etc. Thereafter, the NC machine tool takes out a predetermined tool from the tool magazine and executes a machining operation.

By the way, the NC device must recognize what kind of tools are stored in each pot of the tool magazine. In other words, if a tool other than the specified tool is incorrectly stored in the pot of the tool magazine, the specified machining will not be possible at all when the machining operation is performed using this tool. Therefore, the NC device is made to recognize each tool stored in each pot using the following methods. One method is to write a comparison table of the T code of each tool and each pot position on an NC tape, and read this NC tape with an NC device for recognition. Another method is a method in which the operator looks at a comparison table of the T code of each tool and each pot position written in the tool data sheet and inputs the information directly by operating the operation section of the NC device.

However, each of the above methods has the following problems. That is, in the former method, it is necessary to determine in advance the positional relationship between each pot and each tool to be stored in these pots. Therefore, the operator stores each tool in each pot while checking the tool data sheet, but there is still a risk that the operator may make a mistake in the position of the pot in which the tool is stored. Furthermore, if there is a sudden change in the tools to be stored during setup work, it is not possible to respond immediately.

Furthermore, in the latter method, inputting the T code of each tool stored in each pot is required by operating the operating section of the NC device, which takes time.

(Problems to be Solved by the Invention) As described above, there is a risk of erroneously locating the pot in which the tools are stored, and it takes time to input the T code of each tool.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a numerical control device that can store each tool in each pot of a tool magazine in a short time and without mistakes.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides tool bar codes that are attached to each tool and indicate these tools, and each tool that stores each tool in a tool magazine provided in a machine tool. A barcode reading means is attached to each pot and reads a pot barcode indicating these tool pots, and a tool barcode read by this barcode reading means is attached to a predetermined machine used for machining work with a machine tool. The numerical control unit is equipped with a numerical control main body that has the function of converting the bar code for the pot into a code, converting the bar code for the pot into a pot number, and storing the machine code and the pot number in correspondence to achieve the above purpose. It is a device.

(Function) By providing such a means, when the barcode reading means reads the barcode for the tool and the barcode for the pot, the numerical control main body reads the barcode for the tool into the predetermined barcode used for machining work. At the same time, the pot barcode is converted into a pot number and stored in correspondence with each other.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram of a numerical control device connected to an NC machine tool. In the figure, 1 is a tool, and a tool barcode 2 is attached to this tool 1. Each tool barcode 2 has a code value written for each tool. On the other hand, 3 is a machine tool, and this machine tool 3 is equipped with a tool magazine 4 that stores a plurality of tools 1. The tool magazine 4 is provided with pots 5-1, 5-2, etc. for storing the tools 1, as shown in part in FIG. And these pots 5-1゜5-2...
・The barcode for each pot corresponds to 6-1.
6-2... is]ffl! has been done. Each of these pot barcodes 6-1, 6-2, . . . is written with a code indicating the corresponding pot 5-1, 5-2, .

Now, 7 is the NC device main body, and this NC device main body 7
A barcode reading device 8 is connected to. This N
The C device main body 7 controls the operation of the machine tool 3 according to preset values, and especially the barcode reader 8.
The tool barcode 2 read by the machine is converted into a T code that can be decoded by numerical control of the work, and the pot barcodes 6-1, 6-2, etc. are converted into pot numbers and stored in correspondence with each other. It has the function of The specific configuration is as shown in FIG. In other words, CPU (
A central processing unit) 9 is provided, and this CPU 9 is connected to a bus 10.
10 (input/output) boats 11 to 14 are connected to each other through the 10 (input/output) ports 11 to 14, as well as a ROM (read access only memory) 15 and a RAM (random access memory) 16. A barcode reader 8 is connected to the I10 boat 11, and a barcode reader 8 is connected to the I10 boat 11.
A display device 17 such as a CRT is connected to the boat 12. Further, a keyboard 18 is connected to the I10 port 13, and a drive circuit 19 of the machine tool 3 is connected to the I10 port 14. Note that this drive circuit 1 includes a motor 20.
is connected.

The ROM 15 stores a control program for the NC device main body 7 itself. Incidentally, a correspondence table 21 between tool barcodes and T codes as shown in FIG. 4 and a correspondence table 22 between pot barcodes and pot numbers as shown in FIG. 5 are written in the RAM 16. . Further, this RAM 16 is provided with a storage position information table 23 as shown in FIG. 6, which associates T codes and pot numbers. Note that this storage position information table 23 has no data written in advance and is blank.

The CPU 9 has the following functions by issuing commands according to a control program.

That is, when a tool barcode is imported, the corresponding T code is read from the correspondence table 21 and written in the T code field of the storage position information table 23, and when a pot barcode is retrieved, the corresponding T code is read from the correspondence table 21. This is a function to read the corresponding pot number from the storage position information table 23 and write it in the pot number column of the storage position information table 23.

Next, the operation of the apparatus configured as described above will be explained.

When performing setup, a plurality of assembled tools are transported to the installation position of the machine tool 3. Then, each tool 1 that has been carried is replaced with each tool stored in the tool magazine 4 that was used in the previous machining operation. In this replacement work, among the tools stored in the tool magazine 4, each tool to be used in the next machining work is known, so
Each tool that will not be used in the next machining operation is replaced with each tool 1 that has been carried. In this case, each tool 1 is arbitrarily, that is, randomly stored in each pot 5-1, 5-2, . . . of the tool magazine 4. And, for example, the seventh
As shown in the figure, the tool 1 is stored in the pot 5-4, the T code mode key is operated from the keyboard 18, and the barcode reader 8 is brought close to the tool barcode 2 attached to the tool 1. Then, this barcode reading device 8 reads the tool barcode 2 and sends it to the NC device main body 7. The CPU 9 of the NC device main body 7 searches the code value of the received tool barcode 2 in the correspondence table 21 and reads the corresponding T code, for example, rTOO3J. Then, the CPU 9 writes this T code rTOO3J into the T code column of the storage position information table 23 as shown in FIG. At this time, the CPU 9 uses the T code rTOO3 written in the T code column of the storage position information table 23.
J is read out and sent to the display device 17 for display. Next, the pot number mode key on the keyboard 18 is operated,
And the barcode reader 8 reads the pot barcode 6-
4, this barcode reading device 8 reads the pot barcode 6-4 and sends it to the NC device main body 7. The CPU 9 of the NC device main body 7 searches the code value of the received pot barcode 6-4 in the correspondence table 22 and reads the corresponding pot number, for example "1". Then, the CPU 9 writes this pot number "1" into the pot number column corresponding to the column in which the T code rTOO3J is written in the storage position information table 23, as shown in FIG. At this time, the CPU 9 reads out the pot number "1" written in the pot number field of the harvested position information table 23 and displays it on the display device 17. Thereafter, the tool barcode of each tool 1 is read in the same manner and converted into a T code, and the barcode of each pot 5-1, 5-2, . . . . . are read and converted into pot numbers, and these T codes and pot numbers are respectively written in correspondence with the storage position information table 23.

Here, information necessary for machining, such as tool correction values and NC programs corresponding to the T code, is input to the NC device main body 7 via NC tape, etc., so the NC device main body 7 combines these information and pot numbers. Execute machining work by matching.

In the above embodiment, the barcode reading device 8 reads the tool barcode 2 and the pot barcode 6-1, 6-2, etc., and the NC device main body 7 reads the tool barcode 2 at T. At the same time, the pot codes 6-1, 6-2, etc. are converted into pot numbers and stored in correspondence with each other, so when storing each tool l in the tool magazine 4, these tools Even if tools 1 are randomly stored in each pot 5-1, 5-2, . . . , the NC device 7 can accurately recognize each tool 1 stored in each pot 5-1, 5-2, . In this case, if the tool stored in the pot is read in correspondence with the tool barcode and pot barcode of that pot,
The tool barcode and the pot barcode may be read in the order of random pot positions. As a result, setup can be performed efficiently and predetermined processing can be performed reliably. Furthermore, even if the data conversion device 7 is used, the NC device 9 that has been used up to now can be used accordingly.

Note that the present invention is not limited to the above-mentioned embodiment, and may be modified without departing from the spirit thereof. For example, when inputting each barcode 2 and 6-1゜6-2... to the NC device 7, the pot barcode 6-1.6-
2... may be input, and then the tool barcode 2 may be input. Furthermore, the data written in the storage position information table 23 of the NC device 7 may be transmitted to a higher-level central control device, for example, by the DNC method, and downloaded to each NC device. Also, each pot 6-1
．． 6-2... If there is interference with a tool, an alarm may be issued. Further, the pot position information may be obtained from the memory of the magazine indexing control section of the NC device instead of inputting the bar code.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a numerical control device that can store each tool in each pot of a tool magazine without making any mistakes in a short time.

[Brief explanation of the drawing]

1 to 8 are diagrams for explaining one embodiment of the numerical control device according to the present invention, in which FIG. 1 is a configuration diagram, FIG. 2 is a configuration diagram of a tool magazine, and FIG. A specific configuration diagram of the NC device, Fig. 4 is a schematic diagram showing a correspondence table between tool barcodes and T codes, and Fig. 5 is a schematic diagram showing a correspondence table between pot barcodes and pot numbers. figure,
゛Figure 6 is a schematic diagram showing the storage position information table, Figure 7 is a diagram showing the reading status of each barcode, and Figure 8 is a schematic diagram of the storage position information table 1 in which data is written...Tools, 2...Barcode for tools, 3...Machine tools, 4.
...Tool magazine, 5-1 to 5-5...Pot, 6-
1 to 6-4... Barcode for pot, 7... NO device body, 8... Barcode reader, 9... CP
U, 10...bus, 11-14...I10 boat,
15... ROM, 16... RAM, 17... Display device, 18... Keyboard, 19... Drive circuit, 2
0...Motor. Applicant's agent Patent attorney Takehiko Suzue Figure 6 Figure 7 NC Zenioki Fubo Figure 8

Claims (1)

[Claims] A tool barcode is attached to each tool to indicate these tools, and a pot barcode is attached to each tool pot that stores the tools of the tool magazine provided in the machine tool to indicate these tool pots. a barcode reading means for reading, and converting the tool barcode read by the barcode reading means into a predetermined machine code used for processing work by the machine tool, and converting the pot barcode into a pot number. and a numerical control main body having a function of storing these machine codes and pot numbers in correspondence.