JPH0450088B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mold management method for a turret punch press.

[Prior Art] A turret punch press equipped with a numerical control (hereinafter referred to as NC) device is used to set desired molds in each mold station of the turret and perform shearing processing and the like.

In such a turret punch press, the number of prepared molds is usually greater than the number of molds that can be set in the turret at one time, that is, the number of mold stations.

The molds prepared in large numbers as described above are generally stored in a mold rack, and are manually attached to a mold station as needed to perform a predetermined process.

However, when managing the molds of the above-mentioned turret punch presses, there are many problems as follows.

First of all, in order to start work, the necessary molds must be attached to the designated mold stations, but it is currently unclear which molds are attached to which stations. That's true. In other words, it is impossible to discover where the mold to be replaced is attached to multiple stations (for example, station 72) without actually visually inspecting the mold for each station, which requires a lot of effort and time. It requires.

Further, the mold specified in the work instruction sheet is performed by specifying, for example, the shape, size, etc. of the mold. Therefore, the operator must find a desired mold from a mold rack containing a large number of molds (for example, 300 molds), which requires a lot of effort. This labor is related to where the mold taken out for replacement from the station is placed next. For example, if the mold is stored in a currently vacant place, it would require an extremely large amount of labor. It will become.

Furthermore, the mold must be properly polished in a timely manner. The mold is regenerated by this polishing and its lifespan can be extended to the maximum extent possible.
In order to perform this polishing in a timely manner, the number of times the mold is used must be managed using an appropriate method. number of times)
There is a way to record it.

Therefore, when the above-mentioned problems are combined with the management of the number of times the mold is used, the mold management becomes a truly troublesome task.

[Object of the Invention] The present invention provides a turret that allows mold management to be performed extremely smoothly and easily, and in particular allows the molds that are actually set to be easily and quickly confirmed for each mold station. The purpose is to provide a punch press mold management method.

[Structure of the Invention] In order to achieve the above object, the present invention assigns a unique mold number to each mold used in a turret punch press, registers each mold number in a master file, and The shape and size of the mold are also registered in the above master file corresponding to each mold number, and on the other hand, the mold number written in the machining program is recognized in the NC device and corresponding to the mold number. Registering the station number of the turret where the punching operation is performed in correspondence with the mold number registered in the master file, and
The number of times the mold with the corresponding mold number has been used is updated and registered in the master file, and at least the station number, the mold number, and the number of times of use are associated with each other and displayed on the display device.

[Example] Hereinafter, the present invention will be explained in more detail based on the example shown in the drawings.

As shown in FIG. 1, the NC device 1 is connected to a turret punch press 3 and is driven by an NC tape 7 produced by an automatic programming device 5.

The turret punch press 3 has a large number of mold stations 79 in the turret for setting molds, and in the illustrated example, only the turret (72 stations) is shown. Each mold station 7
9 is assigned a unique number (up to 72), and each mold set in each mold station 79 is also assigned a unique number (for example, from 1 to 300) in relation to the mold storage rack. ) is attached.
The NC device 1 has a bubble memory that can store the number of each mold, the number of times each mold has been used, and also the mold information (shape, size).
BM, and the contents of this bubble memory BM can be read or modified.
Manual data input with CRT (hereinafter referred to as
A device 41 (referred to as MDi) is provided.

FIG. 2 shows a block diagram of a device for implementing the present invention, FIG. 3 shows a module hierarchy diagram of an operating system for operating the numerical control device, and FIG. 4 shows a functional block diagram of the device.

As shown in FIG. 2, the CPU 9 of the NC device 1,
ROM 11 and RAM 13 are interconnected via a system bus 15. Further, this system bus 15 has a digital input 17, a digital output 19, and a programmable controller 2.
1, a bidirectional RAM 23, two serial interfaces 25 and 27, and two parallel interfaces 29 and 31 are connected, respectively.

The CPU 9 performs overall control of the entire system under an operating system that will be described later. The ROM 11 stores a control program, and the CPU 9 controls the turret punch press and performs other processing in accordance with this program.

The RAM 13 stores data during each processing by the CPU 9, and provides this data to the data requesting section when necessary.

The digital input 17 and digital output 19 are connected to a solenoid, a limit switch, etc. via a connector module CM. Note that a photocoupler is used in these signal systems as a noise countermeasure, and the system is completely isolated from the outside.

The bidirectional RAM 23 (interpolation section) is
It is connected to a plurality of position control modules 33 that drive the shaft, the turret rotation axis (T axis), and the backlash adjustment axis (C axis), and each position control module 3
3 are connected to a servo amplifier 35, respectively. Each servo amplifier 35 is connected to the drive motor M of the corresponding axis, and a tachogenerator TG and an encoder E are respectively provided in association with each motor, and the feedback signal of the encoder E is sent to the position control module 33,
The speed signals from the TG are each returned to the servo amplifier 35.

The above serial interface 25 includes a CRT
An MDi device 41 with a CRT 39 is connected via an MDi controller 37. Further, a control panel 45 is connected to the serial interface 27 via a panel controller 43. The parallel interface 29 has
A tape reader 47 is connected. A bubble memory BM is connected to the parallel interface 31 via a bubble memory controller BMC.

The MDi device 41 can control display data and input other key information. CRT39
Display contents include the number of the currently set mold and the number of times the mold has been used, as well as the status display, the position of each axis, the program display,
It is also possible to display alarms, etc. Furthermore, from the MDi device 41, switching of the display mode,
You can enter each command from the menu and enter the NC program using keys.

The control panel 45 displays the control status, each switch status, etc. using LEDs, etc., and also displays the CPU 9
Can be serially communicated with. The tape reader 47 inputs the NC program from the paper tape.

Bubble memory BM is a master aisle of all molds.
It has a MF (see Figure 7), and records the number of times the mold has been used, etc. in this bubble memory.

As shown in FIG. 3, the main control section 49 is located under the operating system 50, and includes an automatic operation control section 53, an operation state management section 5,
5, and the data control section 57 of the CRT and MDi are dependent thereon. Then, in the automatic operation control section 53,
NC program input processing section 59, arithmetic processing section 6
1, and the NC data output processing section 63 are subordinated thereto. The functions of each of these modules will be explained in detail with reference to FIG.

As shown in FIG. 4, the common table 65 in the RAM 13 (see FIG. 2) includes a Di/Do image table 67 and an operation control table 6.
9. NC program output processing buffer 71, NC
A program calculation processing buffer 73 and an NC program input buffer 75 are provided. The NC program file 77 stores an NC program and is used in the memory operation mode. In the figure, the flow of data is shown by solid lines, the flow of control signals is shown by broken lines, and the flow of control data is shown by thick arrow lines. It makes the components communicate with each other.

The operating system 51 allows the use of high-level languages, making the software more advanced. Each module (process) shown in FIG. 3 operates under this operating system 51 and is scheduled efficiently in real time.

The main control unit 49 is a top-level process that performs procedures for processing by the operating system, initialization diagnosis of hardware modules, etc., initialization of common tables, NC program files, etc., and initialization of the axis control module 33. etc. After performing these processes, the main control unit 49
Three processes, the automatic operation control section 53, the operation state control section 55, and the CRT and MDi data control section 57, are activated.

After startup, the automatic operation control section 55 controls automatic operation and program check operation in memory mode, MDi mode, and tape mode. Then, a program input processing section 59, an arithmetic processing section 6
1, and the start timing of the process of the NC data output processing section 63 (so that after input processing for one block, it is operated, and the result of this operation is output).

The operation control unit 55 is always in the RUN state, and the NC
While monitoring the operating status of devices and machines, such as Di/Do processing, and managing the status of the axis control unit, it also controls the generation of alarms and other interrupt processing in a timely manner.

The CRT and MDi data control section 57 controls display data for the CRT, registers NC programs, parameter data, and setting data, edits, and inputs one block of NC programs in the MDi mode.

The NC program input processing section 59 inputs the NC program in each automatic operation mode and performs format checking thereof.

The arithmetic processing unit 61 performs coordinate calculations, feed rate calculations, etc., and creates specific axis control data for the axis control module 33.

The NC data output processing section 63 includes the arithmetic processing section 61
The axis control data processed in the bidirectional RAM 2
3 to the axis control module 33, as well as dwell processing and auxiliary functions (M code)
etc. In addition, in this example, the NC data output processing section 63 is provided with a mold number recognition function and a current station number recognition function, which recognizes the mold number written on the NC tape and reads this number. A cumulative signal of the number of mold usages for each hit is sent to the bubble memory BM written therein, and the station number corresponding to the hit mold number is registered in the bubble memory.

Next, details of a mold management method using the above device will be explained.

An example of the description of the NC tape 7 is shown in FIGS. 5 and 6.

The NC tape 7 shown in Fig. 5 has a mold number entry column 79 for each unit operation (operation performed with one mold or so-called 1 block) of the machining program.
has been established. This NC tape 7 is used for normal punching work, and there is nothing different about it. Further, the NC tape 7a shown in FIG. 6 is provided with a mold information writing field 81 in which information about the mold is written in addition to the mold number writing field 79. This NC tape 7a is used to register mold information, and the shape, size, and other information of the mold are appropriately recorded for convenient mold management.

First, a new mold is prepared, and when this mold is stored in a rack, a mold number is set for this mold. The mold number is preferably determined in correspondence with the rack position, for example, if it is the fifth in the third row of rack No. 9, it is 0935.

This number is then registered together with the mold information shown in FIG. 6 above in the master aisle MF formed by the bubble memory BM.

Figure 7 shows a state in which the NC tape 7 shown in Figure 6 above has been used to register and then other information (for example, the number of times the mold has been used) has been recorded, but in the figure, a new mold has been registered. In some cases, only the mold number and information such as shape and size are recorded, and the number of times it has been used is zero (if it has already been used, the number of times may be recorded), and the station number is also recorded. Nothing is written at this point (blank).

Next, a method of handling the numerical control device using the NC tape 7 shown in FIG. 5 will be explained.

When the operating system 51 shown in FIGS. 3 and 4 starts up, the NC program input processing section 59 provides the machining program for one block to the calculation section 61, and the calculation section 61 analyzes the contents of this machining program. Then, control data for each axis is provided to the NC data output processing section 63. In addition to distributing the control data for each axis to each axis, the NC data output processing section 63 recognizes the mold number, and controls the operation control table 69, CRT, and MDi data control section 5.
7. Update the number of mold usages stored in the master aisle MF via the bubble memory controller BMC. Therefore, each time a punching operation is performed, the number of times the mold is used is updated to a new value.

On the other hand, when the NC data output processing unit 63 recognizes the mold number as described above, the NC data output processing unit 63 outputs this master file.
The station number where the punching operation is performed is registered in correspondence with the MF mold number (see the right column in Figure 7). This registration can be done immediately before or during the punching process, but
Alternatively, you are free to do so immediately thereafter. If another station number or one's own station number is already written in the station number storage field, the station number is updated and registered as a new one.

As a result, the master file shown in FIG. 7 stores the shape and size of the mold corresponding to the mold number, the number of times it has been used, and the station number where the mold is installed. Become.

Note that when removing the mold from the station, the number already stored in the station number storage column can be deleted using the MDi device.

Master Aisle MF created in this way
The contents can be displayed on the CRT 39 using the MDi device 41. As a result, the CRT39
Since the mold number, its information, and the number of times it has been used are displayed, the operator can, for example, immediately know the mold to be polished based on the displayed contents. Further, the contents of the master file can be changed using the MDi device 41, and for example, for a polished mold, the corresponding number of uses can be cleared.

Figure 8 shows the master faille MF shown in Figure 7.
Change the array to the mold station number column and
This is an example displayed on a CRT39.

From FIG. 8, it is possible to know at a glance which station and which mold is currently attached. In addition, in this case, there is a possibility that multiple mold numbers may be displayed for the same mold station, but this fear is caused by the fact that when removing the mold from the station, the station corresponding to the mold number This can be resolved by clearing the number memory field.

Mold management involves arranging a large number of molds in a skillful manner, clearly understanding the condition of a given mold, and making sure that it can be easily removed when necessary. is considered an important element. Therefore, as mentioned above, it is possible to determine the mold number along with the mold storage location, and display the number of uses, mold information, and currently installed station number in the master file according to this mold number. If you memorize it, you will never lose track of the mold, and you can know the number of times it has been used and mold information as desired. Also, you can know the mold currently attached to the station, so you can easily Type management can be smoothed and simplified.

[Effects of the Invention] As can be understood from the above description of the embodiments, in short, the present invention assigns a unique mold number to each mold used in a turret punch press, and assigns a unique mold number to each mold. The shape of the mold is registered in the master aisle MF, and the shape of the mold is registered in accordance with each mold number.
Also register the size in the master aisle MF above, and on the other hand, enter the mold number listed in the machining program.
The NC device 1 recognizes and registers the station number of the turret where the punching operation is performed in correspondence with the mold number, and registers the station number of the turret in correspondence with the mold number registered in the master file MF, and The number of times the mold has been used is updated and registered in the master file MF, and at least the station number, the mold number, and the number of times of use are associated and displayed on the display device 39.

As is clear from the above configuration, in the present invention, the mold number, shape, and size of each mold used in the turret punch press are registered in the master file MF and written in the processing program. The station number of the turret that performs punching work using the mold with the mold number is registered in correspondence with the mold number registered in the master file MF, and the number of times the mold is used is also updated and registered. be. Then, the station number, the mold number, and the number of times of use are associated with each other on the display device 39.
This is what is displayed on the page.

Therefore, according to the present invention, it is possible to easily and quickly confirm the molds attached to each station of the turret of a turret punch press and the number of times the molds have been used.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing an example of an outline of a device for carrying out the present invention, Fig. 2 is a block diagram of the above-mentioned device, Fig. 3 is a hierarchical diagram of the operating system used in the NC device, and Fig. 4 The figures are functional block diagrams showing the functions of the NC device in detail, Figures 5 and 6.
FIG. 7 is an explanatory diagram of an NC tape, FIG. 7 is an explanatory diagram of a master file, and FIG. 8 is an explanatory diagram of an example of a CRT display. 1... NC device, 3... Turret of turret punch press, 5... Automatic programming device,
7, 7a...NC tape, 9...CPU, 39...
CRT, 79...Mold number entry field, BM...Bubble memory, MF...Master file.

Claims (1)

[Claims] 1 Each mold used in the turret punch press is assigned a unique mold number, and each mold number is registered in the master aisle MF, and the shape and size of the mold are specified in accordance with each mold number. On the other hand, the mold number written in the machining program is recognized in the NC device 1, and the station number of the turret where the punching operation is performed is registered in the master file according to the mold number. In addition to registering the corresponding mold number registered in the MF, the number of uses of the mold with the corresponding mold number is updated and registered in the master aisle MF, and at least the station number, mold number, and number of uses are registered. A mold management method for a turret punch press, characterized in that the method is configured to display the corresponding information on a display device 39.