JP3100995B2 - Tool management system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool management system, and more particularly to a tool suitable for management of a tool whose use environment is severe, such as a tool used in a large number of press dies and a large impact force. It concerns the management system.

[0002]

2. Description of the Related Art In an automatic control machining apparatus such as an NC machine tool, an automatic control system needs to recognize in advance an identification information of a tool, such as a type, a size, and a correction amount of a tool. In view of this, an information storage chip storing the identification information of the tool is attached to the tool, a tool management system that reads the identification information of the tool from the information storage chip attached to the tool, and inputs the information to the automatic control system is proposed. Have been.

An information storage chip mounted on a tool is generally called an ID chip, which is packaged by a non-volatile memory such as an EEPROM and a gate array for controlling transmission and reception of signals, and is packaged by electromagnetic induction. It is designed to be read / written in a non-contact manner.

[0004] The tool management system using the information storage chip as described above ensures the improvement of production efficiency and avoids erroneous input of tool information to the automatic control system. It is useful in large-scale small-lot production.

[0005]

An information storage chip composed of a nonvolatile memory such as an EEPROM, a gate array for controlling transmission and reception of signals, a coil for electromagnetic induction, and the like, withstands an impact force of about 50 G and 10,000. It is possible to write about once, but the information storage chip may not show sufficient durability depending on the use environment such as repeated impact and temperature, which causes a problem in the reliability of the stored information. .

[0006] For example, in a punch press or the like, a repeated impact force acts on a press die as a tool, and in a crank press, an impact force of 50 G or more may act upon punching. Therefore, in a press machine, a tool management system using an information storage chip as described above is considered to be inappropriate and impossible.

The present invention has been made in view of the above-mentioned problems in a conventional tool management system using an information storage chip. Even if the use environment of a tool such as a press die is harsh, It is an object of the present invention to provide a tool management system that can perform tool management safely and with high reliability by using an information storage chip.

[0008]

SUMMARY OF THE INVENTION In view of the foregoing problems, the present invention provides a plurality of ID chip storage holes corresponding to a plurality of mold holding stations provided on a turret disk in a turret punch press. Take out from the punch attached to the mold holding station and remove the ID
A plurality of read / write portions provided corresponding to each ID chip storage hole so that reading and writing of information of the ID chip inserted into the chip storage hole are performed in a non-contact manner; An ID chip storage device including a plurality of indicator lights provided is provided, and an N chip for automatically controlling the ID chip storage device and the turret punch press device is provided.
This is a configuration in which the device C is connected to be freely communicable.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a tool management system according to the present invention
3 shows a configuration example when applied to an NC turret punch press device. In FIG. 1, a turret punch press apparatus 1 includes an upper turret disk 5
And a lower turret disk 7 at the lower part of the frame 3. The upper turret disk 5 and the lower turret disk 7 are index-rotated and driven in synchronization with each other by driving means (not shown). A punch 9 and a die 11 as a pressing die are held. The punch 9 of the upper turret disk 5 is pressed by a crank drive or a hydraulic drive striker 13 at a punch operation position, and a die 11 at an opposing position is pressed.
Punching is performed in coordination with.

The frame 3 is provided with a side table 15 movable horizontally in the left-right direction (Y-axis direction) in FIG. The side table 15 has a carriage base 17 extending in a direction (X-axis direction) perpendicularly penetrating the plane of FIG.
Is fixedly connected to the carriage base 17 as shown in FIG.
Carriage 1 so that it can move in a direction that penetrates the paper at right angles.
9 are attached. A work clamp 21 is attached to the carriage 19, and the work clamp 21 is configured to detachably hold a plate material (not shown) to be processed.

The plate material to be processed gripped by the work clamp 21 is moved by the movement of the carriage base 17 in the Y-axis direction and the movement of the carriage 19 in the X-axis direction.
Is moved in a plane along the Y-axis direction and the X-axis direction along a pass line with reference to the upper surface of the punch, and positioning with respect to the punch operation position is performed.

The punch 9 used in the turret punch press 1 has an ID chip holding hole 9b in a pressing head 9a as shown in FIG. 2, FIG. 3, or FIG. 4, FIG. The ID chip 23 serving as an information storage chip is removably inserted into the ID chip holding hole 9b.

The ID chip 23 is composed of a nonvolatile memory such as an EEPROM, a gate array for controlling transmission and reception of signals, a coil for electromagnetic induction, and the like, and is one-chip packaged by a case or a resin mold. Often, this stores the mold identification information such as the shape and size of the mold, correction information by polishing and the like, processing history information and the like in a non-volatile memory, and externally contacts the information by electromagnetic induction. Reading and writing (read / write) are performed. Here, the processing history stored in the ID chip 23 includes the delivery date of the mold, the machine used, the processing material,
Processing thickness, number of hits by processing method, number of strip mistakes, order management, complaint handling, polishing period for each machine used,
There are elements for knowing processing conditions such as a replacement time, a polishing period for each processing material and a sheet thickness, a replacement time, and an appropriate value of a clearance for the sheet thickness, and maintenance information.

The turret punch press 1 is connected to an NC unit 25 for automatically controlling the turret punch press. The NC device 25 is of a well-known computer type. As shown in FIG. 6, the NC device 25 has a CPU 27, a ROM 29 storing system programs and the like, and a user program (N
C program), a RAM 31 for storing data and the like, and these are connected to each other by a system bus 33.

A connector module 37 is connected to the system bus 33 by an I / O port 35. The connector module 37 includes a turret disk drive control section 39 for controlling the indexing rotation drive of the upper turret disk 5 and the lower turret disk 7. Control unit 4 for controlling the driving of striker 13 by a crank mechanism or a hydraulic mechanism
1 and various switches / sensors 43 provided in each part of the turret punch press device 1 are connected.

The system bus 33 has a shared RAM (D
P-RAM) 45, 47 are connected to each other,
A programmable controller 49 and a positioning module 51 are connected to the (DP-RAM) 45 and 47, respectively.

The programmable controller 49 is a CPU
27 controls the turret disc drive control unit 39 and the press control unit 41 via the connector module 35 by referring to signals from various switches and sensors 43 via the connector module 35 under execution of the NC program by the 27 It is designed to output a signal. Thus, the indexing rotation of the upper turret disk 5 and the lower turret disk 7 and the driving of the striker 13, that is, the press operation, are controlled in a predetermined order and timing.

A servo motor 55 is connected to the positioning module 51 via a servo amplifier 53. The servomotor 55 includes a servomotor for driving the carriage base 17 in the Y-axis direction and a servomotor for driving the carriage 19 in the X-axis direction. An encoder 57 for feedback compensation is connected to the servomotor.

A CRT controller 63 and an operation panel controller 65 are connected to the system bus 33 via interfaces 59 and 61, respectively. A CRT 67 as a screen display device is connected to the CRT controller 63, and an operation panel 69 having various button switches, volume knobs and the like is connected to the operation panel controller 65.
Is connected. The CRT 67 and the operation panel 69 are provided on the front surface of the console of the NC device 25 as shown in FIG.

The system bus 33 has an interface 7
1, a tape recorder 73 is connected, and the NC device 2
Reference numeral 5 reads the NC program.

Further, an ID chip storage device 77 is connected to the system bus 33 via an interface 75.

The ID chip storage device 77 has a front panel 77a as shown in FIG. 1 or FIGS.
There are a plurality of ID chip storage holes 79 opened at the bottom. The ID chip storage hole 79 is provided in the upper turret disk 5.
Are arranged in the same arrangement pattern as the arrangement pattern of the mold holding stations in the upper turret disk 5. The ID chip storage hole 79 is adapted to receive the ID chip 23 in a removable manner by hand. As shown in FIGS. 23
A depression 81 is provided for grasping an ID chip from the ID chip storage hole 79. Each ID chip storage hole 79 has an I
A read / write unit 83 for reading and writing information of the D chip 23 in a non-contact manner is provided.
In a, an indicator lamp 85 is provided at a position near each of the ID chip storage holes 79.

FIG. 9 shows an example of an electrical configuration of the ID chip storage device 77, which has a CPU 87, a ROM 89 storing system programs and the like, a RAM 91 storing data and the like, and a buzzer 93. Are connected to each other by a system bus 95.

The system bus 95 has an interface 9
7, 99 via the read / write driver 101, respectively.
The indicator light driver 103 is connected to each of them, the read / write unit 83 is connected to the read / write driver 101, and the indicator light 85 is connected to the indicator light driver 103, respectively.

A CRT controller 109 and an operation panel controller 111 are connected to the system bus 95 via interfaces 105 and 107, respectively. C
The RT controller 109 has a CR as a screen display device.
T113 is connected, and an operation panel 115 having various button switches is connected to the operation panel controller 111. The CRT 113 and the operation panel 115 are provided on a front panel 77a of the ID chip storage device 77 as shown in FIG.

The system bus 95 has an interface 11
The ID chip storage device 77 is connected to the NC device 25 in an intercommunication relationship by the interface 117.

The system program of the ID chip storage device 77 stored in the ROM 89 and executed by the CPU 87 includes a read / write unit 83 of each ID chip storage hole 79.
Takes in the information read from the ID chip 23 with a station address unique to each ID chip storage hole 79, transmits the information to the NC device 25, and writes the write information with the station address from the NC device 25 to the station address. A process (task) for outputting to the corresponding read / write unit 83 is included. Each ID chip storage hole 7
The unique 9 station address may be the same as the mold holding station address of the upper turret disk 5.

For data transfer between the read / write unit 83 of each ID chip storage hole 79 and the read / write driver 101, each read / write unit 83 is connected to the read / write driver 101 by an individual lead wire. This may be performed by setting a communication channel address in each read / write unit 83 and performing one-to-N communication between the read / write driver 101 and each read / write unit 83. .

Next, the operation of the tool management system according to the present invention will be described with reference to FIG. At the time of mold replacement, the NC device 25 is caused to read a new NC program and input information of a mold to be used from now on. As a result, the NC device 25 first obtains mold information held as a turret current file, that is, information on the mold currently mounted on each mold holding station of the upper turret disk 5 and information on the mold to be used. Are compared (step 1), and a mold holding station requiring replacement is detected (step 2). Based on this detection result, the NC device 25 outputs to the ID chip storage device 77 a command signal for turning on the indicator lamp 85 of the ID chip storage hole 79 corresponding to the mold holding station requiring replacement.

Thus, the ID of the ID chip storage device 77 is
ID chip storage hole 7 corresponding to a mold holding station requiring a mold change among indicator lights 85 of chip storage hole 79.
9, that is, all the indicator lamps 85 of the exchange station are turned on (step 3). In this state, the operator selects a mold holding station for performing mold exchange with reference to the lighting state of the indicator lamp 85, and performs a turret rotation instruction operation (step 4).

Based on the turret rotation instruction, the NC device 2
Numeral 5 controls the turret disk rotation, whereby the upper turret disk 5 and the lower turret disk 7 are indexed and rotated. It comes to the replacement work position (step 5). When this operation is completed, only the ID chip storage hole 79 corresponding to the mold holding station, that is, the indicator lamp 85 of the selected station is turned on, and the mold (changed mold) newly attached to the mold holding station is turned on. ID chip storage device 7)
7 is displayed on the CRT 113 (step 6).

In this state, the operator operates the CRT 11
The die to be replaced based on the display contents of 3, ie, the punch 9,
The die 11 is taken out of the mold stocker, and the ID chip 23 already inserted into the ID chip storage hole 79 where the indicator lamp 85 is lit is removed from the ID chip storage hole 79.
The ID chip 23 fitted in the ID chip holding hole 9b of the punch 9 to be replaced is extracted from the ID chip holding hole 9b, and inserted into the ID chip storage hole 79 where the indicator light 85 is lit, that is, the lighting station. (Step 7). Further, the operator operates the upper turret disk 5 and the lower turret disk 7 of the mold to be replaced by the punch 9 and the die 11 already mounted from the mold holding stations.
Is removed, and a punch 9 and a die 11 to be replaced are mounted on the mold holding station. Then, the ID chip 23 previously removed from the ID chip storage hole 79 is inserted into the ID chip holding hole 9b of the punch 9 removed from the mold holding station, that is, the ID chip 23 is returned to the original punch. Is returned to the mold stocker (step 8).

The ID chip storage device 77 inserts the ID chip 23 into an ID chip storage hole 79 (lighting station) in which the indicator lamp 85 is lit, and thereby the ID chip 23 is inserted.
The read / write part 83 of the D chip storage hole 79
The information written in the non-volatile memory of the D chip 23 is read, and the information is transmitted to the NC device 25 with an address signal indicating which mold holding station it belongs to (step 9).

The NC unit 25 compares the information of the exchange mold from the ID chip storage unit 77 with the information of the corresponding mold in the NC program, and performs a process of confirming whether or not the exchange mold is correct. Perform (Step 10). As a result of this check,
If the replacement mold is not the correct mold, the huser output command
Output to the D chip storage device 77. As a result, the buzzer 93 of the ID chip storage device 77 generates a warning sound (step 11). As a result of the confirmation, if the exchange mold is a correct mold, the NC device 25 reads the processing history from the information of the exchange mold from the ID chip storage device 77 and writes it into the turret current file (step 12) ).

Next, the NC device 25 executes machining control according to the NC program (step 13). At this time, NC
The device 25 refers to the processing history of the mold written in the turret current file and corrects and controls the descent speed, the lowest descent position, and the like of the striker 13.

When the processing is completed, the NC device 25 issues a write command for writing a processing history such as the number of punches (the number of hits), the material to be processed, the thickness of the processed plate, and the identification number of the machine to be used. The data is output to the chip storage device 77 (step 14).

The ID chip storage device 77 sends write information to the read / write section 83 of the corresponding ID chip storage hole 79 by receiving an individual write command for each die used from the NC device 25. As a result, a new processing history is written in the ID chip 23 inserted into the ID chip storage hole 79, and the processing history is updated (step 1).
5).

In the above-described embodiment, the ID chip 23 is provided only on the punch 9.
It may be detachably attached to the die 11 as well. In this case, the ID chip storage hole 7 of the ID chip storage device 77
9 will be provided two for each mold holding station. The ID chip 23 is not necessarily provided directly on the punch 9 and the die 11, but may be provided on these holders.

Since the ID chip 23 must definitely be returned to the original punch 9 or the die 11 when re-attaching to the punch 9 or the die 11, the ID chip 23 is used as a foolproof.
A mechanical identification fitting mechanism using a key or the like may be provided between the device and the device 1 so that the ID chip 23 is not mounted on a different punch 9 or die 11.

Further, in the above-described embodiment, the read / write portion 83 is provided in each of the ID chip storage holes 79, but in addition to the above, a portion provided with the ID chip storage hole 79 is provided. Even if a rotatable turret disk is set and a specific read / write position is set, and only a number of read / write portions corresponding to the number of tracks are provided at this position, the read / write portion may be provided in the ID chip storage hole 79. Only one may be provided at a position different from the above, and the information of the ID chip 23 may be read before the ID chip 23 is inserted into the ID chip storage hole 79.

Also, the attachment / detachment of the ID chip 23 to / from the mold,
Delivery of the ID chip 23 to the ID chip storage device 77 may be automatically performed by a robot or the like.

Although the present invention has been described in detail with reference to specific embodiments, the present invention is not limited to these embodiments, and various embodiments can be made within the scope of the present invention. Some will be apparent to those skilled in the art.

[0044]

As will be understood from the above description of the embodiment, in short, the present invention is directed to a plurality of turret punch press apparatuses (1) corresponding to a plurality of mold holding stations provided on a turret disk (5). The ID chip storage hole (79) and the information of the ID chip (23) taken out from the punch attached to the mold holding station and inserted into the ID chip storage hole (79) are read and written in a non-contact manner. A plurality of read / write portions (83) provided corresponding to the ID chip storage holes (79);
An ID chip storage device (7) provided with a plurality of indicator lights (85) provided near each of the D chip storage holes (79).
7), and N for automatically controlling the ID chip storage device (77) and the turret punch press device (1).
This is a configuration in which a C device (25) is connected so as to freely communicate with each other.

Therefore, when using the punch, the ID chip 23 is removed from the punch, and the ID chip 23 is
By mounting the punch in the ID chip storage hole 79 corresponding to the mold holding station of the turret disk on which the punch is mounted, information of the ID chip 23 can be read and written by the corresponding read / write unit 83,
The punch can be easily managed. Also, ID
By illuminating the indicator lamp 85 provided near the chip storage hole 79, the punch to be replaced can be easily known, and the ID chip 23 removed from the punch can be easily identified.
Can be mounted without error.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a configuration example when a tool management system according to the present invention is applied to a CNC turret punch press device.

FIG. 2 is a front view showing an example of a punch used in the tool management system according to the present invention.

FIG. 3 is a plan view of the head of the punch shown in FIG. 2;

FIG. 4 is a front view showing another example of the punch used in the tool management system according to the present invention.

FIG. 5 is a plan view of the head of the punch shown in FIG. 4;

FIG. 6 shows N used in the tool management system according to the present invention.
FIG. 2 is a block diagram illustrating an example of a C device.

FIG. 7 shows an I used in the tool management system according to the present invention.
The expanded sectional view of the ID chip storage hole part of the D chip storage device.

FIG. 8 shows an I used in the tool management system according to the present invention.
The enlarged front view of the ID chip storage hole part of the D chip storage device.

FIG. 9 shows an I used in the tool management system according to the present invention.
FIG. 3 is a block diagram illustrating an example of a D-chip storage device.

FIG. 10 is a flowchart showing an operation example of the tool management system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turret punch press apparatus 5 Upper turret disk 7 Lower turret disk 9 Punch 11 Die 17 Carriage base 19 Carriage 21 Work clamp 23 ID chip 25 NC device 77 ID chip storage device 79 ID chip storage hole 83 Read / write part 85 Indicator light

Claims (1)

(57) [Claims] 1. A plurality of ID chip storage holes (79) corresponding to a plurality of mold holding stations provided on a turret disk (5) in a turret punch press device (1).
And the I that has been taken out of the punch attached to the mold holding station and inserted into the ID chip storage hole (79).
A plurality of read / write portions (83) provided corresponding to the ID chip storage holes (79) so as to read and write information of the D chip (23) in a non-contact manner, and the ID chip storage holes (79); A plurality of indicator lights (8
And an NC device (25) for automatically controlling the ID chip storage device (77) and the turret punch press device (1).
A tool management system, characterized in that the tool management system is connected so as to be able to freely communicate with the tool.