JPH01310834A - Tool controlling device - Google Patents

Abstract

PURPOSE:To prevent erroneous taking out of a tool, by a method wherein take-out of a tool contained in a tool magazine is instructed according to a tool demand made by an NC machine tool by using a tool number, and the tool number is read and is compared with a demanded tool number. CONSTITUTION:In an automatic exchange mode, according to a tool demand made by an NC machine tool by using a tool number, take-out of a tool contained in the given pot number of a tool magazine is instructed. A taken out tool number is read by a bar code reader 4, and is compared with a demand tool number by a tool number confirmation processing part 12 to confirm it. When an erroneous tool number is detected, operation is stopped immediately, and a tool confirming result is displayed on a display part 14. When a tool magazine stock data memory part 13 is rendered ineffective, operation of a tool exchange means is switched to a tool number confirmation processing mode, the tools of the pots of a tool magazine are orderly taken out, a tool number is read, and the tool number is stored in the memory part 13 in relation to each pot number.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention 1 (Field of Industrial Application) The present invention relates to a tool management device for managing tools exchanged by an automatic tool changer of an NC machine tool.

(Prior art) Conventionally, the tool feeding method used in NC machine tools has been to feed tools with tool numbers specified by the NG Niprogram to the main spindle of the NC machine tool from each pot in the tool magazine using a tool changer. is common.

The tools present in each pot in the tool magazine are registered by the operator based on the correspondence between the tool number and the pot, and are stored in the storage device as presence data.

(Problem to be Solved by the Invention) However, in such conventional tool management devices, there is no means for checking even if the operator sets an incorrect tool in each pot of the tool magazine.
Operate the tool changer according to the NC machine program,
When taking out a tool from a designated pot and feeding it to the spindle, there is a problem in that the wrong tool may be taken out and fed, making it impossible to perform machining correctly.

In addition, if the tool's presence data is memorized and the memorized contents are lost due to a failure of the tool or a failure of the magnetic disk drive, etc., in order to create new presence data, each There was a problem in that it was necessary to pull out the tools of Bott1~@ one by one, check the Mi, and then re-enter the tool numbers in correspondence with Bott1~, which required a great deal of effort.

This invention has been made in view of the above conventional problems, and the tool changing means automatically assigns the tool number to the tool taken out from a predetermined hole in the tool magazine. In addition, it is possible to prevent the removal of the wrong tool during automatic tool exchange.In addition, by processing the operation of the tool exchange means [-] to confirm the tool number and switching to ``1'', each box in the tool magazine can be checked. 1- To provide a tool management device that can automatically read out the tool number of a tool that is present and use it for creating presence data, and can also automatically restore the presence data memory. With the goal.

[Structure of the Invention] (Means for Solving the Problems) The tool management device of the present invention has a tool magazine presence data storage in which the tool numbers stored in the tool magazine are stored in correspondence with each pot. a tool number reading means for reading the tool number of the tool on the tool changing means; and an operation mode switching means for switching the operation mode of the tool changing means between an automatic exchange mode and a tool number confirmation processing mode;
[above] - tool number 1iff verification means for checking whether the tool number read by the tool number reading means is a predetermined one; display means for displaying the tool number verification result; and each box 1 in the presence data storage section. 1-Tool number input means for changing the stored contents of the 1-tool number for every 1-tool number.

(Function) In the tool management device of the present invention, when the operation mode of the tool exchange means is the automatic exchange mode, in response to a tool request based on a tool number from an NC machine tool, ■ - to the shell exchange means -
A command is given to take out the tool stored in the designated box 1 of the C tool magazine, and the taken out tool number is read by the tool number reading means and compared with the requested tool number. If an incorrect tool number is found through this comparison, the operation is immediately stopped and the tool number 5t? is displayed on the tool confirmation result display means. i; can be displayed to prevent an incorrect worker from starting the operation of the NC machine tool.

In addition, when the data in the -1 shell magazine presence data storage section is lost, the operation of the tool changing means is switched to the - mode after processing the tool number confirmation, and the tools stored in each box 1~ of the tool magazine are sequentially taken out by the changing means. The tool number is read by the tool number reading means, and a new tool number is stored in the storage section in correspondence with the number for each box. Seat data can be automatically restored.

(Example) Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a circuit block diagram of an embodiment of the present invention.
FIG. 2 shows its mechanical configuration.

As shown in FIG. 2, the tool management device 1 includes a tool change device 2.
, an NC device 3, and a barcode reader 4, and has a circuit configuration shown in FIG. 1, as will be described later.

In FIG. 2, the tool changer @2 is provided with a tool magazine 5, and each pot 6.
6,6. Various tools 7, 7°, etc. are stored in .... Then, the tool exchange device 2 rotates the tool magazine 5 according to the instructions from the NC device 3 so that a predetermined pot 6 comes to the exchange position, and selects the predetermined pot 6 that has come to the exchange position.
It operates to take out the tool 7 stored in the machine and feed it to the main shaft 8 of the NC machine tool.

As shown in FIG. 1, the tool management device 1 uses a tool removal request input section 9 specified by the NC machine program of the NC device 3 and a tool number of the tool inputted from this tool request manual section 9. A command is given to determine the pot number in which the tool is stored, rotate the tool magazine 5 of the tool changer 2, bring a predetermined pot 6 to the replacement position, and take out the tool 7 stored therein. and a tool exchange instruction section 10 that gives the following information.

Also, a tool number reading signal input section 11 that reads the tool number provided on the tool taken out by the tool changer 2 with the barcode reader 4 and processes the signal, and a signal processing of this tool number reading signal input section 11. The result is sent to the tool exchange instruction section 10.
It also includes a tool number confirmation processing section 12 that verifies the tool number by comparing it with the tool number indicated by the tool number.

Further, the tools 7, 7, . . . stored in each pot 6.6° on the tool magazine 5. . . , a presence data storage unit 13 that stores tool numbers corresponding to each box 1 to number; a display unit 14 that displays the tool number confirmation result by the tool number confirmation processing unit 12; a keyboard 15 for inputting a new tool number into the storage box 1 of the presence data storage section 13 in correspondence with the number; a tool number change processing section 16 for processing input signals from the keyboard 15; Tool exchange device 2 for exchange instruction section 10
The tool also includes an operation mode switching section 17 for switching the operation mode between an automatic tool exchange mode and a tool number confirmation processing mode.

The operation of the tool changing device having the above configuration will be explained next. When the operation mode indicated by the operation mode switching unit 17 is the automatic tool exchange mode, the NC device 3 is switched on as shown in FIG.
The tool request input section 9 receives the requested tool number in response to the tool number request from the user (step $1), and when this tool number is a predetermined end number, the automatic exchange mode operation is ended (step 82). ).

However, if it is not the end number, the receiver searches the data in the tool magazine presence data storage section 13 for the tool number taken, finds the pot number in which the corresponding tool number is stored, and selects the pot 6. Stored tools 7
The tool change instruction section 10 gives an instruction to take out the tool by the tool change device 2 (step 83.S4).

~7- After this, the tool changer 2 removes the tool 7 from the pot 6.
In contrast, in the state shown by the dotted line in FIG. 2, the tool number attached to the tool 7 is scanned by the barcode reader 4, and the signal is given to the tool number reading signal input section 11 to read the tool number. (Step S5).

After reading this tool number, the tool number confirmation processing section 12 compares the tool number instructed by the tool exchange instruction section 1o with the tool number actually read from the tool number reading signal input section 11 (step S6). ), if both tool numbers match, it is assumed that the correct tool has been taken out, and the tool changer 2 is instructed to supply the tool to the machine tool spindle 8 (step S7).

However, if both tool numbers do not match in the tool number confirmation process described above, the tool confirmation result display section 14
Assuming that an abnormal condition has been discovered, the commanded tool number and the read tool number are displayed (step S8), and the operator is instructed to replace the tool or input the tool number change.

The operator refers to the abnormality display on the display unit 14 and replaces the tool that matches the designated tool number with the designated pot, but uses the barcode reader 4 to check the tool number of the tool stored in the designated pot. In order to change the tool number to the read actual tool number, the tool number is input using the keyboard 15, and the tool number change input section 16 causes the presence data storage section 13 to update the tool number (step 89).

In this way, when in automatic tool change mode, the NC
If the tool number taken out by the tool changer 2 does not match the tool number input from the device 3, the tool supply is stopped and the presence data is updated, or the tool with the tool number requested by the NC device 3 is removed. This allows tools to be stored correctly in the pot, allowing tool management to match the actual presence data.

Next, when the power goes down or the memory in the presence data storage section 13 is lost due to other causes, the operation mode switching section 17 switches to the tool number confirmation processing mode and the flowchart shown in FIG. The presence data will be automatically restored based on the data.

During this tool number confirmation process, the tool exchange instruction unit 10 selects the pots 1 to 1 with the younger pot number in the tool magazine 5.
-(,9) is sent to the tool changer 2 to sequentially take out the tools 7 stored in the tool 6 (step 510).

If the tool is not stored in the specified pot, the presence in the tool magazine presence data storage section 13 is displayed as "
"Not present" (step S11, 512
).

When the designated tool 7 is taken out in step S11, the barcode reader 4 reads the tool number of the tool 7 on the tool changer 2 and sends the read signal. A tool number reading signal is given to the manual unit 11 to perform tool number reading processing, and the read tool number is stored in the tool magazine presence data storage unit 13 in correspondence with the storage box 1.
3,514).

This tool number reading and storage process is repeated from the last box 1 to the number on the tool magazine 5 (step 515).
).

In this way, in the tool number confirmation processing mode,
Each bog h6, 6 on the tool magazine 5. Tools 7, 7. are stored in... The tool numbers of ... can be automatically read sequentially in correspondence with the numbers in the box 1 stored in A, and stored in the tool magazine presence data storage section 13. Automatic recovery of data will be possible.

[Effects of the Invention] As described above, according to the present invention, when the operation mode of the tool changing means is switched to the machining mode side, when the operation mode of the tool changing means is switched to the machining mode side, the request from the NC device It is possible to check whether the tool number matches the tool number, and if it does not match, the tool change can be automatically stopped, and an abnormality can be displayed to notify the operator.The operator can see the display and memorize the presence data. It is possible to change the stored contents of the tool number for each pot to the correct one, and it is possible to prevent troubles caused by misplacement of tools.

In addition, if the operation mode of the tool changer is switched to the upper side for tool number confirmation processing, each box on the tool magazine
The tool numbers of the tools stored in the memory can be sequentially read in correspondence with each box 1 to number circle and automatically stored in the presence data storage means, and automatic recovery 11E when the presence data in the storage means is lost. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a machine diagram of the above embodiment, and Fig. 3 is a flowchart explaining the operation in the automatic tool exchange mode of the above embodiment. A7-
FIG. 4 is a flowchart illustrating the operation in the tool number confirmation processing mode in the above embodiment. 1... Tool management device 2...] Tool changing device 3
...NC device 4...Bar l"-Reader 5...2 [Ingredients magazine 6...Bots 1 to 7...
・Tool 8...Spindle 9...T tool removal request Human power section 10...Worker replacement instruction section=12- 11...Tool number reading signal input section 12...Tool number i recognition processing section 13. ...Presence data storage section 14...Display section 15...Keyboard 16
...Tool number change input section 17...Operation mode switching section

Claims (1)

[Claims] a tool magazine presence data storage section that stores the tool numbers stored in the tool magazine in correspondence with each pot; a tool number reading means for reading the tool numbers of tools on the tool exchange means; an operation mode switching means for switching the operation mode of the means between an automatic exchange mode and a tool number confirmation processing mode; and a tool number confirmation means for confirming whether the tool number read by the tool number reading means is a predetermined one. and a display means for this tool number confirmation result,
A tool management device comprising tool number input means for changing the stored contents of tool numbers for each pot in the presence data storage section.