JPH08323433A - Tool selection instruction method in sheet working machine - Google Patents

Abstract

PURPOSE: To execute tool life management and substitution tool selection during automatic operation without requiring manpower. CONSTITUTION: A worker inputs beforehand a tool condition number/station link information table, a remaining punch number information table of each station, and NC program information NC equipment 1. Further, by setting a T code in NC program information to the tool condition number, among the station number corresponding to the tool condition number instructed by comparing/operating a tool condition number/station information table, a remaining punch number information table of each station, one having the min remaining punch number is selected. By instructing the selected tool command, sheet working is automatically executed, thus, tool life management and substitution tool management is automatically executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool selection command method for a plate material processing machine, such as a punch press or a forming machine, for issuing a tool selection command when processing a plate material on a workpiece with a tool. .

[0002]

2. Description of the Related Art Conventionally, as a tool selection command method in, for example, a turret punch press as a plate material processing machine,
The tool position number (station No.) is encoded and used in the tool function (T function) to issue a tool selection command, and a message is displayed when the life of the tool is reached.

[0003]

In the conventional tool selection commanding method described above, when the target tool is located in a place other than the commanded T number, the operator performs the tool setup, which is troublesome. It depends. In other words, it is troublesome to check where the tool (die) is located in the turret station before the machining program or to replace the tool (die) into the turret station so that the program follows the program after the machining program. It depends.

Further, when the tool has reached the end of its life, the next tool such as a machining center cannot be automatically selected, and since it is only a message, it takes time and effort for the operator to find the tool that has reached the end of its life. There is.

It is an object of the present invention to provide a tool selection command method in a plate material processing machine which enables tool life management and alternative tool selection during automatic operation without the operator's trouble.

[0006]

In order to achieve the above object, a tool selection command method in a plate material processing machine according to the present invention according to claim 1 is a method for performing plate material processing by using a tool for a work in a plate material processing machine. In advance, the operator NCs the tool condition No./station No. link information table, the remaining punch number information table of each station, and the NC program information.
By inputting into the device and setting the T code in the NC program information as the tool condition No, a comparison calculation is performed in the NC device,
Among the station numbers corresponding to the designated tool condition number, the one having the smallest number of remaining punches is selected.

According to a second aspect of the present invention, there is provided a tool selection commanding method for a plate material processing machine according to the first aspect of the present invention, which is the tool selection commanding method for a plate material processing machine. It is characterized in that the specific data and the definition of the program code are input.

According to a third aspect of the present invention, there is provided a tool selection commanding method for a plate material processing machine, wherein the plate material processing machine is a punch press or a forming machine. It is characterized by that.

[0009]

In the tool selection command method for the plate material processing machine according to the present invention according to claim 1, the operator preliminarily sets the tool condition No./station No. link information table, the remaining punch number information table of each station, and the NC program information to N.
Input to the C device. Also, T in the NC program information
By setting the code as the tool condition No., in the NC device, among the station Nos corresponding to the tool condition No./station information table and the tool condition No.
The one with the smallest number of remaining punches is selected. By instructing the selected tool command, plate material processing is automatically performed, and tool life management and alternative tool management are automatically performed.

In the tool selection command method for the plate material processing machine according to the second aspect, since machine-specific data such as a dead zone and the definition of the program code are entered in the remaining punch number information table of each station, for example, X, Y.
By collating with the position data, the following is selected when the dead zone is reached.

In the tool selection command for the plate material processing machine according to the third aspect, it is desirable to use a punch press or a forming machine as the plate material processing machine.

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings. In this embodiment, a punch press will be described as an example of a plate material processing machine.

Referring to FIG. 1, an NC device 1 as a control device for controlling a punch press includes a CPU 3, and the CPU 3 has an NC engraved on a paper tape as shown in FIG. NC to enter the program
A program input device 5 or a tool for inputting a remaining punch number information input device 7 for a tool (punch) attached to each station in a turret and a tool condition No./station No. link information table The condition number / station number link information input device 9 is connected to each.

An NC program for storing the NC program input from the NC program input device 5 in the CPU 3
A program memory 11 is connected, and a station remaining punch number information table input from the station remaining punch number information input device 7 is stored in a file.
3 is connected. Further, a tool condition No / station N link information table input from the tool condition No / station No link information input device 9 is stored in the CPU 3 as a tool condition No / station N.
The o-link information table file 15 is connected, and the G code table file 17 in which G codes are stored in advance is also connected. Further CPU3
A comparison / determination unit 19 for determining processing of a tool selection command based on information from each memory and table file is connected to the.

In the CPU 3, a die (punch) housed in an X and Y axis command section 21, a turret, and a magazine for moving the work of the punch press in the X and Y axis directions is indexed to a processing position, Alternatively, a turret for indexing to the tool exchange position, a magazine command unit 23, and a ram command unit 25 for making the ram stroke at the machining position are connected.

A tool condition number is used for the T code in the NC program. The tool condition No. is a coded shape, size, and the like. Explaining in more detail, the T code is a function of specifying a command of a tool or a matter concerning a specified tool from the T function described in JIS B0181 (numerical control machine tool term) P-419, and the address of this code. Is T, and is specified by the coded number that follows it. "

Moreover, regarding the code, in this embodiment,
The user can arbitrarily set the tool condition No. in the operation according to "tool shape, die clearance, processing range (difference between turret 100, 200 and 300 OT zones), application (nibbling, overtaking and other usage combinations)" To decide.

The station remaining punch number information table stored in the station remaining punch number information table file 13 is shown in FIG. 3 (B) in the case of the turret shown in FIG. 3 (A). ), A parameter indicating the position of the tool is used with the station No. as a "key". Also, FIG.
In each holder in the magazine as shown in FIG. 4A, as shown in FIG. 4B, a parameter indicating the position of the tool is used with the station number set to "key". The number of remaining punches in FIGS. 3B and 4B can be negative by subtracting one for each punch during processing.

In the remaining punch number information table file 13 of this station, machine-specific data such as the station number of the turret, what number it is in the turret, or where the holder is in the pot is recorded. Therefore, the machine-specific data can be used to identify the unworkable range (dead zone).

The tool condition No./station No. link information table file 15 stores the tool condition No./station No. link information table with the tool condition No. as a "key" as shown in FIG.
Are classified and managed as. The table file 15 is created by manually inputting information by a die setup operator at a processing site or by using a paper tape (FD).

In the G code table file 17, for example, "the G code G number is a nibbling command".
Definitions such as are stored in the file, so if you collate with the program input data and nibling, you can use it as it is because it can be cleaned as it is even if the die reaches the end of its life.

In the comparison / determination unit 19, the NC program
The NC program stored in the memory 11, the station remaining punch number information table filed in the station remaining punch number information table 13, and the tool condition No./station No. link information table file 15 are filed. Tool condition No /
Based on the station No. link information table and the G code stored in the G code table file 17, the tool selection command is processed and determined.

With the above configuration, the operation will be described based on the flowcharts shown in FIGS. 6 and 7. First, in step S1, the tool condition No./station No. link information input device 9 inputs the tool condition No./station. The No link information table is stored in the tool condition No / station No link information table file 15.

In step S2, the station remaining punch number information input device 7 inputs the station remaining punch number information table to the station remaining punch number information table file 13. In step S3, the NC program inputted from the NC program input device 5 is stored in the NC program memory 11.

Next, in step S4, the cycle start signal is input by the cycle start button to start the automatic operation. In step S5, the comparison and determination section 19 determines the processing of the T code (tool condition No.) and the station is started. N
o is determined.

The details of the processing determination in the comparison / determination unit 19 will be described in more detail with reference to the flowchart of FIG. 7. In step S51, the T code (tool condition No.) is input from the NC program memory 11 to the comparison / determination unit 19. In step S52, the tool condition No./station No. link information table is input from the tool condition No./station No. link information table file 15 to the comparison / determination unit 19. The T code (tool condition N entered in step S53)
o) is compared with the tool condition No./tool condition No. in the station No. link information table, and if they do not match, the process proceeds to step S54 and the next data of the tool condition No./station No. ring information table, which is a comparison table. If there is no next data, it is judged as not applicable and the process ends. If it is determined that there is the next data, it is moved to the next data in step S55 and returned to the position before step S53 to continue.

If the tool condition Nos. Match in step S53, the process proceeds to step S56. This step S5
In No. 6, the station with the positive remaining punch number is selected based on the remaining punch number information table of the station input from the station remaining punch number information table file 13 and the station No. is determined and completed. To do. If all the remaining punch numbers are negative, the number of stations closest to zero is selected.

In the case where the dead zone is set in step S56, it is determined in step S57 whether or not the dead zone is set. If there is no dead zone, the station number is determined as it is. If there is a dead zone, the process proceeds to step S58, it is determined whether or not there is a next die, and if there is a next die, the station number is determined.
Is determined and there is no next mold, it is not applicable.

When the station No. is determined in step S5 in FIG. 6, after the tool is prepared in the instruction station No. in step S6, the X, Y axis command section 21,
The tool (die) is indexed to the processing position in response to commands from the turret, magazine command unit 23, and ram command unit 25 to start punching, for example, and the number of remaining punches is subtracted for each punch in step S7. Become. When the tool of the determination station has reached the end of its life when the tool of step S6 is prepared, an alarm display (display of only message) is performed in step S8.

When there is no corresponding station in step S5, an alarm such as stop is output in step S9.

In this way, by changing the T code from the station position to the tool condition No, the NC program is changed and the mold is not moved between the stations, and the operator at the processing site substitutes it. The mold can be selected and set. Therefore, the tool life management and the alternative tool selection can be performed during the automatic operation of the NC device. If there is a dead zone, the next tool (mold) can be selected. Further, the present invention is effectively exerted by using a punch press or a molding processing machine as the plate processing machine.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. In this embodiment, the memory operation has been described as an example, but remote (tape) operation is also possible. Further, for example, if the T number is less than 1000, it is the conventional station position, and if it is 1000 or more, the tool condition is N.
It may be o. Furthermore, the station No. of the tool is selected in units of one block (in each row), one program unit (even if the die life is reached in the middle of the sheet, other than the above T code processing, the program of the original station No. A timing of using a die) or one schedule unit (a machining unit in which one or more programs are grouped) is also conceivable.

[0033]

As can be understood from the above description of the embodiments, according to the invention of claim 1, tool life management and selection of alternative tools are performed during automatic operation without the labor of the operator. be able to.

According to the second aspect of the invention, when it is determined that there is a dead zone, the next tool can be selected. According to the third aspect of the invention, the tool selection command method of the present invention can be effectively exerted by using a punch press or a forming machine as the plate material processing machine.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an NC device for explaining a tool selection command method in a plate material processing machine according to the present invention.

FIG. 2 is an example diagram of an NC program.

FIG. 3 is an example diagram of a remaining punch number information table of a station.

FIG. 4 is a diagram showing another example of a remaining punch number information table of a station.

FIG. 5 is an example of a tool condition No / station No link information table.

FIG. 6 is a flowchart for explaining the operation of the tool selection command method of the present invention.

FIG. 7 is a flowchart illustrating a process of a comparison / determination unit in FIG.

[Explanation of symbols]

1 control device (NC device) 3 CPU 5 NC program input device 7 station residual punch number information input device 9 tool condition No / station No link information input device 11 NC program memory 13 station residual punch number information table file 15 Tool condition No./Station No. Link information table file 17 G code table file 19 Comparison judgment unit 21 X, Y-axis judgment unit 23 Turret, magazine command unit 25 Ram command unit

Claims (3)

[Claims] 1. When a plate material is machined by using a tool in a plate material processing machine, an operator preliminarily sets the tool condition No./station No. link information table, the remaining punch number information table of each station and the NC program information to NC.
By inputting into the device and setting the T code in the NC program information as the tool condition No, a comparison calculation is performed in the NC device,
A tool selection command method in a plate material processing machine, characterized in that a station number corresponding to a designated tool condition number is selected with a minimum number of remaining punches. 2. The tool selection command method in a plate material processing machine according to claim 1, wherein the machine-specific data such as a dead zone and the definition of the program code are input to the remaining punch number information table of each station. 3. The tool selection command method in a plate material processing machine according to claim 1, wherein the plate material processing machine is a punch press or a forming machine.