JPH0740171A - Nc machine tool and confirmation of its tool information - Google Patents

Abstract

PURPOSE:To facilitate the automatic confirming work for a tool by installing a plurality of tools having a memory element having the tool data built in, tool storing magazine in which a plurality of tool pots for the insertion of the tool are installed in a chained, form and a tool supporting body which has a plurality of tool pots and carries out the rotary dividing. CONSTITUTION:An NC machine tool is equipped with a tool data forming means which receives the tool No. used in the NC working program of an NC machine tool and the tool pot No. of a tool supporting body 12 and forms the tool data in the form permitting the input into a controller 9 and outputs the tool data to the controller. Further, a collation means for collation- confirming the tool data outputted from the tool data forming means and data read out by a reading-out means 10a, on the basis of a microprogram is installed. Then, the data of the memory element of a tool 13 fitted on the tool supporting body 12, tool No. used in the NC working program, and the tool pot NO. of the tool supporting body are collated by a collating means for each insertion pot of a tool rest.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of tools provided with a memory device containing tool data such as tool numbers,
Between the tool storage magazine in which a plurality of tool pots for inserting this tool are provided in a chain shape, the tool support for performing rotational indexing by providing a plurality of tool pots in an annular shape, and between the tool storage magazine and the tool support The present invention relates to a tool information confirmation method for confirming whether or not the number of a tool inserted in a pot position of a tool support is correct in an NC machine tool having an automatic tool changer for automatically changing tools.

[0002]

2. Description of the Related Art An NC machine tool includes a plurality of tools each provided with a memory device containing tool data such as a tool number.
A tool storage magazine in which a plurality of tool pots for inserting this tool are provided in a chain, and a tool support (for example, a tool rest that can be rotationally indexed) that performs rotational indexing by providing a plurality of tool pots in an annular shape, Some have an automatic tool changing device for automatically changing tools between the tool storage magazine and the tool rest. In such an NC machine tool, when the tool is automatically exchanged between the tool storage magazine and the tool rest according to the tool exchange command, the tool data such as the tool length and the tool diameter of the tool naturally changes from the previous tool. Therefore, the offset data such as the tool length or the tool diameter of the tool to be used is stored in advance in the tool offset file in association with the tool offset number, and when the tool is replaced, the tool offset number of the tool is inserted into the NC machining program. The offset data of the offset number is read out, tool offset is performed, and machining is performed.

By the way, in the NC machine tool, normally, N
The tool exchange command of the C machining program calls a tool by performing a tool exchange by designating a pot number indicating the position of the tool storage magazine and the tool pot of the tool rest. Also,
After the tool length (tool diameter) correction command, the offset number of the inserted tool is commanded to read the offset data and perform the machining. For example, when the tool change instruction is “M06 T01”, the NC device calls the tool with the pot number 01 to perform the tool change. afterwards,
Tool radius correction (G41, G42) or tool length correction (G
43, G44, G49) when the offset number corresponding to the tool number is instructed while the tool is in the valid state, the tool cutting edge is shifted corresponding to the movement position instructed by the NC machining program by the offset data of the offset number, and machining is performed. Be seen.

However, the work of inserting into the tool pot, the work of inputting the offset, and the work of creating the NC machining program are carried out as separate operations, so the tool which is erroneously instructed in the NC machining program should be inserted. If it is inserted into a tool pot with a number different from the number, the NC machining program will be executed in that state, resulting in problems such as defective machining of the workpiece and interference between the workpiece and the tool. there were.

[0005]

Therefore, conventionally, the operator visually checks the shape, size, etc. of the tool inserted into the tool pot while referring to the tool list used in the NC machining program, and correct it. I was confirming whether or not. However, there is a problem that such a visual check has a high probability of making a mistake, and that it takes a lot of time to visually check the tool pots such as the tool support. The present invention has been made to solve the above-mentioned problems, and it stores tool data such as a tool number in the form of giving a memory element to the tool so that the tool can be freely attached and detached. It is intended to be an NC machine tool having a magazine or a tool support. It is also an object of the present invention to confirm whether or not a tool according to the work to be machined is reliably inserted in the tool storage magazine or the tool support by this NC machine tool. A further object of the present invention is to shorten the confirmation time of whether the tool corresponding to the work piece is securely inserted in the tool storage magazine or the tool support and to improve the accuracy with certainty.

[0006]

In order to solve the above-mentioned problems, the present invention is directed to a plurality of tools provided with a memory element containing tool data such as a tool number, and a plurality of tool pots into which the tools are inserted. A tool storage magazine that is provided in a chain, a tool support that is provided with a plurality of tool pots and performs rotational indexing, and a tool automatic changer that automatically changes tools between the tool storage magazine and the tool support. NC machine tool. In this NC machine tool, a reading means is provided which is provided in the tool storage magazine and the tool support, reads the data of the memory element of the inserted tool, and sends the read data to the controller of the NC machine tool. , The tool number used in the NC machining program of the NC machine tool and the tool pot number of the tool support are input, and tool data of a format that can be input to the control device is created and the tool data is stored. Tool data creating means for outputting to the control device, input means for inputting tool data to the tool data creating means,
A memory device of the tool inserted into the tool support, and having a collating means for collating and confirming the tool data output from the tool data creating means and the tool data read by the reading means based on a macro program. When the data, the tool number used in the NC machining program, and the tool pot number of the tool support are collated and confirmed by the collating means, they are sequentially performed for each insertion pot of the tool rest.

The present invention is also provided in the tool storage magazine and the tool support, and reads the data of the memory element of the inserted and attached tool, and sends the read data to the controller of the NC machine tool. Means, a tool number used in the NC machining program of the NC machine tool, and a tool pot number of the tool support, and tool data of a format that can be input to the control device are created and the tool is used. Tool data creating means for outputting data to the control device, input means for inputting tool data to the tool data creating means, tool data output from the tool data creating means, and a tool read by the reading means And a collating means for collating and confirming the data with a macro program based on the macro program, of the tool inserted into the tool support. When the data of the memory element, the tool number used in the NC machining program, and the tool pot number of the tool support are collated by the collating means, the tool pot in which the tool is detached from the tool pot is stored in the sequencer. However, the collation confirmation is performed only for the detached tool pot.

[0008]

With the above construction, the automatic tool confirmation work using the memory device is facilitated by combining the macro program and the sequence program, and the processing and tool for sequentially checking and confirming all the tools on the tool support By storing the tool pot with the tool removed from the pot in the sequencer and using the process of collating only the detached tool pot, the accuracy of collation confirmation can be improved and the collation confirmation time can be shortened. .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an NC machine tool and its tool information confirmation method of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of an NC device for carrying out the tool information confirmation method of the present invention. In addition, this embodiment will be described focusing on an example applied to an NC lathe. Reference numeral 1 is a main control unit. Reference numeral 2 denotes a ROM section, which is basic control software, basic calculation software, basic software for machining programs, system software for macros,
Sequence control software and the like are stored. 3 is RAM
It is a part, and includes a machining program, a macro program including a confirmation macro program, and a description of the presence or absence of tool change (if there is tool change, a flag is set (flag "1"), and after checking the tool information, the flag is "0". A sequence program or the like is stored for performing sequence control such as unloading and displaying no tool change). An arithmetic unit 4 arithmetically processes each command of the machining program and transmits the processed result to the control unit of each axis. 5 is each axis control unit, 6 is an amplifier for amplifying the data processed by each axis control unit 5, and M
Is a servo motor. Reference numeral 7 is a display means such as a CRT for displaying the processed data, and 7a is a display controller.
Reference numeral 8 is an input means such as a keyboard, and 8a is an input control unit.

An input / output control unit 9 is connected to an ID controller 10 and a tool post control unit 11 which will be described later, and controls the ID controller 10 and the tool post control unit 11. Reference numeral 12 denotes a tool rest (tool support) having a plurality of tool pots in an annular shape and capable of rotationally indexing a desired tool pot. 13 is a tool, and this tool 13 has a tool ID (Identification) number in the memory element 13b. Reference numeral 14 is a sequencer, 15 is a tool storage magazine for storing tool pots in a chain, and 16 is a tool exchanging device for exchanging tools between the tool storage magazine 15 and the tools of the tool rest 12. Reference numeral 10a is an ID reading sensor for reading the memory element 13b embedded in the tool holder 13a of the tool 13, and the reading sensor 10a
The data of the memory element read in 1 is transmitted to the input / output control unit 9 via the ID controller 10. The ID reading sensor 10a is incorporated in a slide for attaching the tail stock or the like. The ID reading sensor 10a reads the data of the memory element in a non-contact manner and uses a known electromagnetic coupling method. Further, the main control unit 1 sends and receives signals between the tool post control unit 11 of the tool post 12 and the ID controller 10 based on each command of the machining program stored in the ROM unit 2 and the RAM unit 3, and the sequencer is executed by the sequence program. The sequence control of various devices in 14 is performed, and similarly, the tool confirmation macro program is executed by the macro system software and the macro program. The collating portion of the tool information necessary for the present invention is created by the confirmation macro program, and the actual position of tool exchange is confirmed, compared, and judged by the sequence program.

The first method of the present invention is to sequentially call each tool pot of the tool rest 12 from 01 and confirm the tool numbers in all tool pots. For example, the first method inserts the following program into the processing program. M81 ... ID data reading valid M code T0100 ... machining position indexing command for tool pot number 01 T0200 ... machining position indexing command for tool pot number 02 M82 ... 01 M code for reading ID data and confirming macro T0300 ... tool pot number 03 Machining position indexing command M82 ... 02 M code of ID data reading and confirmation macro call T1000 ... Machining position indexing command of tool pot number 10 M82 ... 09 ID data reading and confirmation Macro code M code M82 ... 10 ID data reading and confirmation macro Calling M code M83 ... ID data reading invalid M code-The "M81" command means an ID data reading valid M code, and this command is valid until "M83" described later is commanded. The "M82" command means an M code for reading ID data, and by instructing "M82", the information of the memory element of the tool at the tool machining position is read, and the macro program for tool confirmation is called by "M82". , NC parameter, for example, “6130” is set, the tool number of the tool pot commanded by the machining program is compared with the ID data of the memory element in the tool, and if they do not match, an alarm code is output. Execute a macro program. The "M83" command means an M code that is invalid for reading ID data. This command disables reading of ID data, checks the tool change memory on the sequence side, and if there is a tool that has not been verified, the sequence The alarm is set on the side and the program is suspended.

FIG. 2 is a flow chart of the tool information confirmation processing of the present invention. The process of the present invention will be described with reference to this flowchart. In addition, it is determined in advance whether all tools of the tool post are to be sequentially confirmed by using the first method of the present invention or only necessary portions having a track record of tool exchange are confirmed by using the second method of the present invention. It shall be stored in the machining program. Whether the main control unit 1 reads the machining program from the RAM unit 3 and the tool information confirmation process sequentially confirms all the tools of the tool post using the first method of the present invention, or uses the second method of the present invention. Determine whether to confirm only the necessary parts that have a track record of tool replacement (step 10).
1). As a result of the judgment, if it is a sequential check, the process from step 103 is performed, and if only the necessary parts are checked, a tool change flag is set in the table for each tool pot number of the tool post (flag "1"). In this case, the UI (12) in the macro program is notified and used as a condition for executing the confirmation macro program (step 102). If only the necessary part is confirmed and the tool change flag is not set, the confirmation macro program is not executed and the machining program is directly executed.

Next, the M code "M8" for ID reading is valid.
"1" at the beginning, cancel M code "M83"
Is inserted at the end. In case of sequential confirmation, call from the tool pot 1 side by T command in sequence, and ID when clamp is completed.
When the information is read and the sequencer stores the tool information, the matching process is performed by the macro program, and at the same time, the next tool pot is read. Only when the M code "M81" command is entered, the completion of the T command is given by starting unclamping. As the condition for starting the next T command, the completion of storing the tool data of the ID by the sequencer is input. After the second call, the M code "M82" command is input after the T command to notify the start of the collation confirmation by the macro program (step 103). Collation confirmation processing (step 104)
As a result, if the ID data is not normal, an alarm is generated and the confirmation macro program is suspended (step 10).
5). If the result of step 104 is normal, the tool change flag in the table for each tool pot number of the tool post is lowered (flag "0", step 106), and step 10
The processing from 3 to step 106 is repeated.

In the case of confirming only the necessary parts, as in the case of sequential confirmation, the M code "M81" for ID reading is instructed at the beginning, and the M code "M83" for cancellation is inserted at the end. Next, the macro program calls the tool pot number to be replaced, and compares the tool data of the tool pot with the ID information. Two M code “M82” commands are programmed after the second T command (step 1
03). Step 104, Step 105, Step 1
At 06, similar processing is performed in the case of sequential confirmation. If you check the tools of all pots or pots of required parts, M code "M8
3 ”command (step 107) and whether the tool information confirmation process sequentially confirms all the tools of the tool post using the first method of the present invention or the tool exchange using the second method of the present invention. It is determined whether or not to confirm only the necessary parts having a track record of (step 108). If the result of the determination is that the confirmation is sequential, the confirmation macro program is terminated and the machining program is executed. On the other hand, if only the necessary portion is confirmed, the sequence memory collation check is performed (step 109), and if there is an abnormality, an alarm is generated and the confirmation macro program is suspended (step 110). If the result of step 109 is normal, the sequencer clears the storage unit, and the UI (1
2) is set to "0" (step 111), the confirmation macro program is terminated, and the machining program is executed.

In the present invention, if the ID reading by the ID controller 10 and the tool indexing by the tool rest control section 11 are performed in sequence, it takes a lot of time, so the main control section 1 sends the ID controller 10 during the tool indexing command.
ID reading processing is performed. In order to minimize the number of tool confirmations when checking tools, the sequencer automatically stores the information that the worker changed tools when changing tools,
The main control unit 1 compares the tool information registered in the previous macro variable with the tool information of this time, and only the tool pots that do not match are I
D Read operation is performed. In this case, if the information such as the exchange pot number and the number of exchanges of the sequencer and the inquiry of the main controller 1 of the NC match, it is regarded as normal and the next command is executed. If they do not match, an alarm is generated as an error.

When the tool confirmation is normally completed, the main controller 1 updates the tool information by replacing macro variables. If an abnormality occurs, the operator takes action, then the cycle start is turned ON, and the tool pots of all the tool rests are automatically continuously and sequentially checked. When machining the same work continuously, no tool check is performed. However, at the beginning of the machining program, the fact that the operator has not changed the tool is checked against the memory of the sequencer to perform machining if normal, and an alarm is generated if abnormal. In this embodiment, the example applied to the NC lathe has been described, but the present invention can be applied to an NC machine in which a machining center includes a pot or the like, and can also be applied to a system having a plurality of machine configurations. is there.

[0017]

As described above, according to the present invention,
Automatically confirming a tool using a memory element, which was difficult in the past, is facilitated by combining a macro program and a sequence program.The process of sequentially checking and confirming all tools on the tool post and the tool from the tool pot By storing the detached tool pot in the sequencer and selectively using the process of collating only the detached tool pot, the precision of the collation confirmation can be improved and the collation confirmation time can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram of an NC device that implements a tool information confirmation method of the present invention.

FIG. 2 is a flow chart of a tool information confirmation process of the present invention.

[Explanation of symbols]

 1 ... Main control part 2 ... ROM part 3 ... RAM part 9 ... Input / output control part 10 ... ID controller 11 ... Tool post control part 12 ... Tool post (tool support) 13 ... Tool 14 ... Sequencer 15 ... Tool storage magazine

Front page continuation (72) Inventor Takanobu Sato 1 Abiko, Abiko, Chiba Hitachi Seiki Co., Ltd.

Claims (3)

[Claims] 1. A plurality of tools provided with a memory device having built-in tool data such as a tool number, a tool storage magazine having a plurality of tool pots into which the tools are inserted and attached, and a plurality of tool pots. An NC machine tool comprising: a tool support for providing a rotary index and a tool automatic changing device for automatically changing the tool between the tool storage magazine and the tool support. 2. A reading means which is provided in the tool storage magazine and the tool support, reads data in a memory element of the inserted and attached tool, and sends the read data to a controller of an NC machine tool, The tool number used in the NC machining program of the NC machine tool and the tool pot number of the tool support are input, and tool data in a format that can be input to the control device is created and the tool data is stored as described above. Tool data creating means for outputting to the control device, input means for inputting tool data to the tool data creating means, tool data output from the tool data creating means and tool data read by the reading means And a collating means for collating and confirming based on the macro program. And the tool number used in the NC machining program and the tool pot number of the tool support are collated and confirmed by the collating means, sequentially for each insertion pot of the tool post. The tool information confirmation method described in item 1. 3. A reading means which is provided in the tool storage magazine and the tool support, reads data in a memory element of the inserted and inserted tool, and sends the read data to a controller of an NC machine tool. The tool number used in the NC machining program of the NC machine tool and the tool pot number of the tool support are input, and tool data in a format that can be input to the control device is created and the tool data is stored as described above. Tool data creating means for outputting to the control device, input means for inputting tool data to the tool data creating means, tool data output from the tool data creating means and tool data read by the reading means And a collating means for collating and confirming based on the macro program. And a tool number used in the NC machining program and the tool pot number of the tool support are collated by the collating means, the tool pot in which the tool is detached from the tool pot is stored in the sequencer, and 2. The tool information confirmation method according to claim 1, wherein only the detached tool pot is collated and confirmed.