JPS6174739A - Detecting method for metal die grinding time of turret punch press - Google Patents

Abstract

PURPOSE:To prolong the life of a metal die by setting up the weight relating to the wear of a metal die according to the plate thickness, quality, etc. of a material and by finding the number of a metal die using times based on the number of hitting times of metal die and said weight. CONSTITUTION:The weight Wa for the quality of the material to be worked is made in a co-efficient by making an ordinary steel as one, etc. The weight Wc for the sort of work is determined as one, etc. in case of a single punch. The weight for plate thickness is decided as one for 1.6mm and two for 6.0mm, etc. as well. When the tape 7 recording the weights, Wa, Wb is inputted into an input processing part 59 an arithmetic process part 61 records in a modal table 69a with analyzing it. The weight Wc is registered in a parameter 69b. An NC controlled output part 63 calculates the number of metal die hitting times and adds it to the table 69c. With said method the number of using times relating to the metal die wear can be detected correctly by the NC device itself. Consequently the life of metal die is extended.

Description

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

[Description of Prior Art] In a turret punch press, the mold is a consumable item and needs to be re-polished or replaced at an appropriate time. By re-polishing a mold at an appropriate time, its lifespan can be more than tripled, but if it is not cleaned, its lifespan will be shortened. Note that since the punch usually starts to wear out from the side, the punch diameter becomes somewhat small, and if the polishing is done at the wrong time, there is a risk that the machining accuracy will be reduced.

Therefore, repolishing the mold is an important operation in a turret punch press, and the timing of repolishing is determined by the operator's eyes (by observing the state of wear of the mold). The work involves removing all the molds set in the mold station one by one,
The state of wear must be periodically inspected to determine when it is time to polish. In places where the operating rate is extremely high, it is necessary to perform this work almost every day, and the inspection time may reduce the actual operating rate.

Therefore, it is possible to know the number of times a mold has been used by the number of hits, and to determine the state of wear from this integrated value. However, with the current NO device, it is only possible to accumulate the number of hits for each station, and it is not possible to easily know the appropriate mold 1iJI polishing period using only this hit mark 116. In other words, even if the number of hits is the same, the degree of mold wear varies greatly depending on the material and thickness of the workpiece material used during this hit, and depending on the machining line during the hit, so the value is simply a total value of the number of hits. does not accurately represent the history of mold wear.

[Object of the Invention] In view of the above-mentioned current situation, it is an object of the present invention to provide a method for detecting the mold polishing time of a turret punch press, which makes it easy to know the appropriate mold polishing time.

[Structure of the Invention J To achieve the above object, this invention sets a weight related to the degree of mold wear according to the material, plate thickness, processing line, etc. of the workpiece material, and applies the weight to the number of mold hits. The number of times the mold is used is determined in proportion to the wear of the mold, taking into consideration the number of times the mold is used, and when the number of times the mold is used approaches the maximum usable number, which is determined in advance as the time when the mold should be polished, it is known when it is time to polish the mold. This is a method for detecting mold polishing time for a turret punch press.

Here, lζ wheel wear W is proportional to the degree of mold wear that is set according to the "thickness", "material", "machining line", etc. of the workpiece material, and is generally determined by the hardness of the workpiece material. , is increased as the plate thickness increases, and is also increased when the processed wire is subjected to hard conditions such as nibbling. In addition, processing temperature, processing speed,
Alternatively, the surface conditions of the processed material may be taken into consideration.

[Description of Embodiments 1] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall explanatory diagram of an apparatus for carrying out this invention;
FIG. 2 is a block diagram of the device, FIG. 3 is a module hierarchy diagram of an operating system for operating the multi-direction control device, and FIG. 4 is a functional block diagram of the device.

As shown in FIG. 1, a turret punch press 3 is connected to the NC device 1, and the NC device 1 is operated using an NC tape 7 created by an automatic programming device 5. Turret punch press 3 is a mold (punch,
Or, only the die) portion is illustrated. Turret punch press 3 shows an example of 72 stations.

As shown in Figure 2, CPIJ9, ROM11, RAM
13 are interconnected via a system bus 15. Also, this system bus 15 has a digital input 17.
, digital output 19 programmable controller 21, bidirectional RAM 23, two serial interfaces 25° 27, and parallel interface 2
9 is connected.

The CPU 9 performs overall control of the entire system under an operating system to be described later. The ROM 11 stores a control program, and the CPtJ9 controls the turret punch press 3 and performs other processing in accordance with this program.

The RAM 13 stores data being processed by the CPU 9, and supplies these data to a data requesting section when necessary.

Above digital input 17, digital output 1
One is connected to a solenoid, a limit switch, etc. via a connector module 31.

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 is connected to a plurality of position control modules 33 that drive the X-axis, Y-axis, turret rotation axis (T-axis), etc., and each of the position control modules 33 is connected to a servo amplifier 35. The servo amplifier 35 is connected to a drive motor M for each axis, and a tacho generator TG and an encoder E are provided in connection with the motor M, and a feedback signal from the encoder E is sent to the position control module 33 from the tacho generator TG. Speed No. 15 is returned to the servo amplifier 35.

The serial interface 25 includes a CRT and an MDi.
An MDi device 41 with a CRT 39 is connected via a controller 37 . Also, serial interface 2
A control panel 45 is connected to 7 via a panel controller 43. A tape reader 47 is connected to the two parallel interfaces.

The MDi device 41 can input display data specifications and other key information. The CRT 39 can display the current number of times the mold has been used, as well as status, position of each axis, program, and alarm.

In addition, from the MDi equipment 241, you can switch the display mode,
Menu manual input for each command, key manual input for NC programs, etc. can be performed.

The control panel 45 displays the control status, each switch status, etc. using an ED or the like, and can also communicate serially with the CPtJ9. The tape leader 47 is the paper tape 7
The NC program is input from the computer.

As shown in FIG. 3, the main control unit 49 is located under the operating system 51, and the main control unit 49 is
An operation control section 53, an operation state management section 55, and a CRT and MDi data control section 57 are dependent. Then, the automatic operation control unit 53 includes an NC program input processing unit 59,
Arithmetic processing section 61 and NC control data output processing section 6
3 is subordinated. The operation of each of these modules will be explained in detail with reference to FIG.

As shown in FIG. 4, the common table 65 has Di/
Do image table 67, operation control table 69, N (L program output processing buffer 771.NC
Program calculation processing buffer 73° NC program manual buffer 75 is provided.

The NC program file 77 stores an NC program. The diagram shows the flow of data with solid lines, the flow of control signals with broken lines, and the flow of control panels with thick arrows. It makes the components communicate with each other.

The operating system 51 enables the use of high-level languages and makes the rough 1-ware highly expandable. Each module (process) shown in FIG. 3 operates under this operating system and is scheduled efficiently in real time.

The four main 11 control units are the top-level processors, and handle procedures for processing by the operating system, initialization diagnosis of hardware modules, etc., initialization of common tables, NC programs, etc., and axis control module 1-33. Perform work such as initialization. After performing these processes, the four main control units control the automatic operation control unit 53 and the operation state control unit 55.
Then, the three processes of the CRT and MDI data control unit 57 are activated.

After startup, the automatic operation control unit 55 controls automatic operation and program check operation according to the memory mode 2-lock D1 mode and tape mode. Then, the program input processing section 59. The activation timings of the three processes of the arithmetic processing section 61 and the NC control data output processing section 63 are controlled as follows after one block's worth of input processing is performed, and the results are output.

The operation control section 55 is always in the RUN state, and monitors the operating status of the NC device and cutting machine, e.g., [)i/Qo processing, monitors this, and manages the status of the axis control section, while generating alarms and other operations in a timely manner. Controls side-loading processing, etc.

The data control unit 57 of the CRT and MDi controls display data input to the CRT, registers NC programs, parameters, and cellading data, performs editing processing, and performs NC programming of blocks in MDi mode, Durham input processing I! l! etc.

The five NC program input processing units input the NC program in each automatic operation mode, check its format, etc.

The calculation processing unit 61 performs coordinate calculations, feed rate calculations, etc.
Specific axis control data for the axis control unit module 33 is created.

The NC1100 data output unit 63 outputs the 1 axis control data processed by the arithmetic processing unit 61 to the 4IIlla, ll911 module 33 via the bidirectional RAM 23, and performs dwell processing and auxiliary functions (M code). ) etc. In this example, the number of times the mold is used is counted here. This will be explained in detail in FIG. 5 below.

FIG. 5 shows an explanatory diagram regarding the function of updating the number of times the mold has been used. The functions of each part shown in FIG. 5 are as described above, including the modal table 69a in the figure.

Six parameter tables and a mold use number record table 69C are located in the operation control table 69 shown in FIG.

Weights Wa and Wb related to material and plate thickness for each work block
The NC tape 7 containing
When input to , the arithmetic processing unit 61 analyzes this and stores the Φ values Wa and Wb related to the material and plate thickness in the modal table 69a.

Also, the weight WC related to the nibbling process, which is described in , is registered in advance in the parameter table 69b. and,
Every time a mold is used (hit), the NC control data output unit 63 calculates the mold usage frequency considering the weight of the mold, and adds this value to the current value of the mold usage frequency record table 69c. I will continue to do so.

The divine request of dried Waba material for the material of workpiece #NI (
(for example, steel, aluminum, iron, copper, etc.) It also changes depending on the carbon content (hardness) of the steel plate, and generally the case of Sotsu steel is taken as 1. The weight wb for the thickness of the workpiece material is i,
5mm is determined as 1.6.0mmr2. The weights W and C for the added T type are 1. in the case of a single punch. If nibbling or other hard processing is to be performed, set a thicker value.

There are many possible calculation methods, but most commonly, it can be determined as a value proportional to the number of times N of mold use (WaWbWc per pips).

The MDj device 41 is a CRT and MDi data control unit 5.
7, the contents of table 69c can be changed. Also, this content can be read out on the CRT39.
Ru.

Note that the collection 171 is performed for each station of the turret punch press, but it is also possible to perform the collection for each mold in consideration of when replacing the mold. In this case, each mold is assigned an individual number, and a memory (which may be separate from the RAM 13 mentioned above) is prepared to record the usage of the mold for each animal number.
The individual number of the mold used recorded on the G tape is recognized, and the number of times the mold has been used in the memory is incremented each time the mold is used, and this number of times the mold has been used is predetermined as the time to polish! It is good to know when it is time to polish the mold as it approaches the usable number up to ζ.

As a result, the NC device itself cannot grasp the number of uses that is proportional to mold wear, taking into account the thickness, material, and processing process of the workpiece + A material, so until now this has been done periodically for all molds. It is only necessary to carry out the inspection work only on those items which have reached the number of times of use which is considered to be the time for polishing and leveting, and it is possible to achieve a wide reduction in the inspection time.

[Effect of the invention 1 According to the present invention, the mold (dt1 polishing period) can be easily and appropriately determined based on the number of times the mold is used, which is calculated by the NC device, and the mold 1i1T can be appropriately determined. Since +g can be performed, the life of the mold of the turret punch press can be extended, and since a properly polished mold can be used, the product accuracy can be improved.

[Brief explanation of the drawing]

The drawings all show embodiments, and FIG. 1 is an explanatory diagram showing an example of an outline of an apparatus for carrying out the invention. FIG. 2 is a block diagram of the above device, FIG. 3 is a module hierarchy diagram of the operating system used in the NC device of the above device, and FIG. 4 is a block diagram of the device,
In particular, there is a functional block diagram showing the functions of the NC device in detail, and FIG. 5 is an explanatory diagram regarding the function of updating the number of times the mold is used. 3...Turret punch press (4 molds...Main control part 53...Automatic operation l1ill i1 part 5
5... Operating state management section 57... CRT and MDi data control section 59...N
C program input processing section 61... calculation section 63... NC! Control data output processing unit 69...Operation control table 69a...Modal table 69b...Parameter table 69C...Mold usage number record table ゛ν■a...Weight wb for the material of the workpiece material・
・Weight Wc for the thickness of the workpiece...Weight for the processing process ÷ l'ix Bo 1 Figure 2 Figure 3

Claims (1)

[Claims] A weight related to the degree of mold wear is set according to the material, plate thickness, processing type, etc. of the workpiece material, and the number of mold uses is calculated in proportion to the mold wear by considering the weight in the number of mold hits. A method for detecting mold polishing time for a turret punch press, characterized in that the mold polishing time is known when the number of times the mold is used approaches a maximum usable number predetermined as the polishing time.