JP2003091307A - Die setup high-efficiency method and system in nc machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To analyze and correct NC data and machining schedule data in order to heighten the efficiency of die machining setup. SOLUTION: A processing part 9 reads a plurality of NC data and machining schedule from an NC data memory. Subsequently, data on dies arranged in a turret disk in the current state is read from a die arrangement data memory 21. A schedule draw-up part 13 draws up a machining schedule taking into consideration the high efficiency of die setup with priority to the schedule by selecting a schedule priority part 15 or a die arrangement priority part 17, or draws up machining schedule data taking into consideration the high efficiency of die setup with priority to die arrangement. The schedule data is stored in a machining schedule data memory 23. An NC turret punch press reads the machining schedule data through a communication system 7 to perform actual sheet metal product machining.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and system for improving the efficiency of mold setup in an NC machine tool, and more particularly, to reduce the setup of molds in application software for creating a processing schedule for a turret punch press, for example. The present invention relates to a method and system for improving the efficiency of mold setup in an NC machine tool for the purpose of improving efficiency.

[0002]

2. Description of the Related Art Generally, for example, NC machine tools (for example,
The used mold information of the NC data (NC program) which is the NC turret punch press) control data is retrieved from the mold layout data which is mounted on the turret disk and which is made into data. Then, when the used mold is mounted on another turret station on the mold arrangement, the T number (address number of the turret station) where the used mold is arranged is converted into the T number of the mold arrangement. .

Further, when the die used cannot be found on the die arrangement, a work (die setup) for embedding the die in a turret station where the die is not used has been performed.

Normally, a plurality of NC data are continuously converted to convert T numbers, molds, etc. while referring to the mold layout. As a result, if the used mold is also used in the previous NC data, it is possible to convert the T number to the same T number, and it is possible to create a machining schedule that reduces the number of mold setups on site. Become.

On the other hand, in the application software such as schedule software and nesting software that collects NC data and creates a machining schedule, the conventional technique is to perform the process of matching the T numbers so that the die setup is reduced as much as possible. Is.

[0006]

[Problems to be Solved by the Invention] Such a conventional NC
The method for improving the efficiency of die setup in the turret punch press has the following problems.

That is, since a plurality of NC data (NC program) performs turret conversion on the die arrangement in the scheduled order, it is possible to identify the die used in the NC data before the processing target. , N after processing target
The mold to be used cannot be identified with C data.

Therefore, there is a problem that another mold may be embedded in the turret station used after the NC data to be processed, resulting in a large number of mold replacements.

For example, the address of the turret disk is T
Mold circle 10 at 101 (T number) turret station
And the mold circle 20 is arranged at the turret station of T102.

On the other hand, it is assumed that NC data 1 has a mold circle 30.0 defined for T101, and NC data 2 has a mold circle 10 defined for T101.

For the above-mentioned die arrangement, NC data 1,
When the continuous conversion process is performed in the order of NC data 2, if the mold circle 10 of T101 is replaced with the mold circle 30 in the data 1, the mold circle 10 will be replaced again by the NC data 2 in the turret station of the turret disk. There was a problem that it had to be attached to.

As described above, considering the T number optimization of the machining schedule, in the conventional continuous turret conversion process,
Insufficient to reduce mold setup.

[0013]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and can be performed by arranging or replacing a mold at a turret station on a turret disk provided in an NC machine tool. In a method for improving the efficiency of a die setup in an NC machine tool for improving the efficiency of a die setup, a step of reading die placement data, which is predetermined information of a die placed in the turret station, from a memory; The machining schedule, which is the execution sequence of the NC program, and each NC that is scheduled to be machined.
A process of reading a program from a memory, the mold placement data, the machining schedule, and the plurality of NCs.
Referring to the program, the step of analyzing the mold setup while virtually specifying the NC program to be processed, and the analysis of the mold setup so that the mold setup is performed efficiently, It is preferable to include the step of modifying the machining schedule and the NC program.

Further, in order to improve the efficiency of die setup, in the step of modifying the machining schedule and the NC program as necessary, the machining schedule and the contents of the NC program are prioritized and the die arrangement data is changed. It is desirable to do.

In order to improve the efficiency of die setup, in the step of correcting the machining schedule and the NC program as necessary, the maintenance of the contents of the die arrangement data is given priority, and the machining schedule and the NC program can be changed. preferable.

It is desirable to include a step of displaying data relating to the mold to be arranged on the display unit when the mold to be used is not arranged at the station.

Then, in a die setup efficiency improving system for an NC machine tool, which is a work for disposing or exchanging the die in a turret station on a turret disk provided in the NC machine tool, which improves the efficiency of the die setup. , Means for reading a die placement program, which is predetermined information of the die placed in the turret station, from a memory, a machining schedule that is an execution order of a plurality of NC data, and each NC program that is scheduled to be machined Is read from the memory, the die arrangement data, the machining schedule, and the plurality of NC programs, and the die setup is analyzed while virtually identifying the NC program to be processed. Means and
While performing the analysis of the mold setup, the machining schedule and the NC are set so that the mold setup is efficiently performed.
And means for modifying the program are desirable.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic structure of a mold setup efficiency improving system 1. In this example, the NC machine tool will be described assuming an NC turret punch press.

In the mold setup efficiency improving system 1, a computer 3 and an NC turret punch press 5 are connected by a communication cable 7 or the like.

The computer 3 includes a computer main body, an input / output unit such as a mouse and a keyboard, which are not shown,
And a display unit.

The computer 3 is, for example, N
The concept includes computer devices such as C device, master device, data server, and automatic programming device.

Then, software for editing the NC data and schedule data is installed on the hard disk of the computer main body to improve the efficiency of die setup, and the control processing is performed.

By the above installation,
The computer 3 includes a processing management unit 9 that manages processing for improving the efficiency of mold setup. The processing management unit 9
The conversion unit 11 and the schedule creation unit 13 are provided.

The conversion unit 11 reads a plurality of NC data from the program data memory 19. Further, the contents of the machining schedule are recognized by referring to the order of the plurality of NC programs. Next, the mold placement data memory 2
1 to a type (eg, circle 10) that is the shape and size of the die placed in the turret station (where the die is embedded) on the turret disk, and the address number of the turret station (eg, T101) (Represented by T number).

On the other hand, the schedule creating section 13 includes a schedule priority section 15 and a die placement priority section 17.

The schedule priority unit 15 is a processing mode characterized by giving priority to the current machining schedule to improve the efficiency of mold setup. The die placement priority mode is a processing mode in which the die setup efficiency is improved by giving priority to maintaining the current state of the die placement arranged in each turret station of the turret disk. These selections can be made by the operator on the display unit 29.

Then, the changing unit 11 and the schedule creating unit 13 are linked to perform the following processing.

That is, by referring to the die arrangement data, the machining schedule, and the plurality of NC programs, the NC program to be processed is virtually specified, and the die setup before and after the processing is performed. To analyze. Further, the machining schedule and the NC program are modified so that the die setup can be efficiently performed while analyzing the die setup. Then, processing data such as the processing schedule and NC data is stored in the processing schedule data memory 23. This data is sent to the NC turret punch press 5 for actual processing.

Further, the error die memory 25 is a memory for temporarily storing the die data when an error die, which is the die data not existing in the turret disk, is detected during the editing process. This error mold is displayed on the display unit 29.
, And prompt the operator to embed the mold in the turret station.

The input unit 27 reads an NC program created by another automatic programming device, for example, and reads NC.
It is stored in the program memory 19. Further, when the dies placed on the turret disc are added, deleted, changed, or the like, the die placement data is corrected so as to correspond.

The operation of the mold setup efficiency improving system 1 will be described with reference to FIGS.

FIG. 2 is a plan view showing a schematic structure of the NC turret punch press 5.

As has been conventionally known, the NC turret punch press 5 has a rotatable upper turret disk on which a punch is detachably supported and a die for working a plate material in cooperation with the punch. A rotatable lower turret disk supported on the above, a vertically striker for pressing the punch indexed at the processing position, and a plate material processed by the punch and die supported on a work table in the X and Y axis directions. And a plate material moving and positioning device capable of moving and positioning freely. Then, necessary punches and dies are selected from the plurality of punches and dies mounted on the upper and lower turrets, and punching work of various shapes and sizes is performed on the plate material.

In this example, in order to facilitate understanding, it is assumed that the turret disk D of the NC turret punch press has four turret stations. The term "turret disc" used in this example includes an upper turret disc and a lower turret disc.

The turret station has T101,
Addresses (T numbers) of T102, T103, and T104 are set.

Then, a die of circle 10 is placed at the station numbered T101. A round 20 die is arranged at the station numbered T102. A die with a circle of 30 is placed at the station numbered T103. A die of circle 40 is arranged at the station numbered T104.

The relationship between the addresses (T numbers) of these turret stations and the dies placed is registered in the die placement data memory 21. The operator then edits this data as appropriate.

FIG. 5A shows a state in which the die placement data is stored in the die placement data memory 21. That is, 10 pieces of circle data are stored corresponding to the T101 data. 20 pieces of circle data are stored corresponding to the T102 data. Circle 30 data is stored corresponding to T103 data. Circle 40 data is stored corresponding to T104 data.

FIG. 3 shows the operation of creating a machining schedule by giving priority to the current die arrangement.

In this example, it is assumed that the NC data (NC data 1 to NC data 4) shown in FIGS. 5B to 5E are scheduled. Here, for the sake of easy understanding, only the address number (T number) included (used) in the NC data and the shape and size of the mold used corresponding to this are displayed. is doing. In addition,
The NC program is a concept including NC data.

The NC data 1 stores the T101 data and the mold data circle 10 corresponding to the T101 data. Further, the T102 data and the mold data circle 50 corresponding thereto are stored (FIG. 5 (b)).

The NC data 2 stores T101 data and mold data circles 20 corresponding to the T101 data. Furthermore, T102 data and corresponding mold data circle 6
0 is stored (FIG. 5 (c)).

The NC data 3 stores T101 data and the corresponding mold data circle 30. Furthermore, T102 data and the corresponding mold data circle 4
0 is stored (FIG. 5 (d)).

The NC data 4 stores T101 data and mold data circles 10 corresponding to the T101 data. Furthermore, T102 data and corresponding mold data circle 5
0 is stored (FIG. 5 (e)).

Also, NC data 1, NC data 2, NC
It is assumed that the data 3 and the NC data 4 are scheduled to be processed in this order.

Under the above conditions, preparation for processing is performed in step S301.

In step S303, a mold layout processable data search process is performed. That is, the mold circle 30 and the mold circle 40 used in the NC data 3 are included in the mold arranged on the initially set turret disk, and thus can be processed. Therefore, the NC data 3 is extracted as mold placement processable data.

The NC data 1 is excluded because it includes the mold circle 50. Since the NC data 2 includes the mold circle 60, it is excluded. NC data 4 is mold circle 5
It is excluded because it contains 0.

In step S305, a mold placement schedule dividing process is performed. That is, the addresses T101, T102, T10 of the stations on the turret disk.
3 dies and 4 dies can be set where T104 is shaken.

Mold circle 10 and mold circle 50 included in NC data 1. Then, the mold circle 3 included in the NC data 3
It becomes 4 with 0 and circle 40.

The processes up to this point are divided as a schedule that can be processed with one die arrangement pattern. On the other hand, NC data 4
Since the mold used in step 1 is included in the mold used in the schedule, it is included in the schedule.

In step S307, error die turret generation processing is performed. That is, the address T in the die arrangement
Since the mold circle 20 arranged at 102 is not used in the NC data 1, NC data 2 and NC data 4 described above, it is replaced with the mold circle 50 not yet arranged on the turret disk. At this time, the error die data, the die data to be replaced, and the like are displayed on the display unit 29.

In step S309, error data exclusion processing is performed. That is, the NC data 2 which is still overflowing in the above-described processing is excluded and is held in the error die data memory 25 as a temporary error die.

In step S311, the address number (T
Number) conversion process. That is, the T number of the mold circle 30 used in the NC data 3 is converted from T101 to T103. The T number of the mold circle 40 is changed from T102 to T104.

In step S313, it is determined whether the data to be processed is completed. When it is determined that the processing is not finished, the processing is returned to step S301. When it is judged to be finished, it is finished.

Since NC data 2 is excluded in this example, the processing from step S301 is repeated for NC data 2. The above-described processing is performed by the changing unit 11 and the schedule creating unit 13 in cooperation with each other.

FIG. 4 shows the operation in the schedule priority mode.

In step S401, preparation for processing is performed.

In step S403, the mold placement schedule is divided. That is, the mold circle 10 and the mold circle 50 of the NC data 1 and the mold circle 20 and the circle 60 of the NC data 2 form four molds in the order of data. Divide as a processable schedule.

In step S405, error die turret generation processing is performed. That is, the mold circle 30 arranged at T103 and the mold circle 4 arranged at T104.
Since 0 is not used in NC data 1 and NC data 2, it is replaced with a mold circle 50 and a circle 60 which are not yet arranged on the turret disk. At this time, the mold to be replaced and the address (T number) of the turret station are displayed on the display unit 29.

In step S407, error data exclusion processing is performed. That is, NC data 3 and NC data 4 are excluded. Then, it is stored in the error die data memory 25 as error data.

In step S409, the address number (T
Number) conversion process. That is, the address number (T number) of the mold circle 50 used in NC data 1 is set to T102.
To T103. Change the address number (T number) of the mold circle 20 used in NC data 2 from T101 to T1.
Change to 02. Further, the address number (T number) of the mold circle 60 is changed from T102 to T104.

In step S411, it is determined whether the data to be processed is completed. If it is determined that the processing has not ended, the processing returns to step S401. When it is determined that the processing is completed, the processing is ended.

In this example, the NC data 3 and NC data 4 are treated as error data, and the error mold data memory 25 is used.
Since these data are stored in, the processing from step S401 is performed on these data. The above-described processing is performed by the changing unit 11 and the schedule creating unit 13 in cooperation with each other.

FIG. 6 shows a case where the conventional turret conversion is performed (FIG. 6A), a case where turret conversion is performed in the schedule priority mode (FIG. 6B), and a turret conversion is performed in the mold placement priority mode. FIG. 6 shows a comparison of the number of times the molds are exchanged for the case (FIG. 6C). Note that N
It is assumed that the C data is scheduled in the order of NC data 1, NC data 2, NC data 3, and NC data 4.

Referring to FIG. 6 (a). In machining with NC data 1, mold circle 2 with address number (T number) T102
Replace 0 with mold circle 50.

In the processing based on NC data 2, the mold circle 30 arranged at the address number (T number) T103 is changed to the mold circle 20. The mold circle 60 arranged at the address number (T number) T104 is changed to the mold circle 60.

In the processing based on NC data 3, the mold circle 10 arranged at T101 is changed to the mold circle 30. T1
The mold circle 50 arranged at 02 is changed to the mold circle 40.

In the processing based on NC data 4, the mold circle 30 arranged at T101 is changed to circle 10. T10
The mold circle 40 arranged in 2 is changed to a mold circle 50. As described above, it is necessary to change the mold 7 times.

Referring to FIG. 6 (b). In the processing according to the schedule A, the following mold conversion is performed before the processing is started. That is, the mold circle 30 arranged at T103 is changed to the mold circle 50.

The mold circle 40 arranged at T104 is changed to a mold circle 60.

In the processing according to the schedule B, the following die conversion is performed before the processing is started. That is, the mold circle 20 arranged at T102 is changed to the mold circle 30. T10
The mold circle 60 arranged in No. 4 is changed to the mold circle 40. As described above, the number of mold changes is four.

Reference is made to FIG. In the processing according to the schedule D, the following die conversion is performed before the processing is started. That is, the mold circle 20 arranged at T102 is changed to the mold circle 50.

In the processing according to the schedule E, the following mold conversion processing is performed before the processing is started. That is, the mold circle 30 arranged at T103 is converted into the mold circle 20. T
The mold circle 40 arranged at 104 is changed to a mold circle 60. As described above, the number of mold changes can be reduced to 3 times.

The present invention is not limited to the examples of the embodiments described above, but can be implemented in other modes by making appropriate changes.

[0077]

As described above, according to the mold setup efficiency improving system for the NC machine tool according to the present invention, the mold that occurs when the turret generation is performed without considering the mold used after the conventional processing target. There is an effect that wasteful replacement of the mold is reduced and the scheduled operation can be performed with the minimum number of mold replacements.

The T number optimization processing has the following modes. That is, the schedule order priority mode and the mold placement priority mode.

As a result, in the schedule order priority mode, die replacement can be reduced while giving priority to the schedule order. Further, in the die placement priority mode, the number of die exchanges can be reduced by processing the data that can be processed by the current die placement of the turret disk.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a mold setup efficiency improving system in an NC machine tool.

FIG. 2 is a schematic diagram showing a schematic configuration of an NC turret punch press.

FIG. 3 is a flowchart showing an operation of the mold setup efficiency improving system in a schedule priority mode.

FIG. 4 is a flowchart showing an operation in a die arrangement priority mode of the die setup efficiency improving system.

FIG. 5 is an explanatory diagram illustrating movement of data.

FIG. 6 is an explanatory diagram illustrating a movement of data.

[Explanation of symbols]

1 Mold setup efficiency system 3 computers 5 NC turret punch press 7 Communication system 9 processing section 11 Change section 13 Schedule creation department 15 Schedule priority section 17 Mold placement priority section 19 Program data memory 21 Mold placement data memory 23 Schedule data memory 25 Error mold data memory 27 Input section 29 Display

Claims (5)

[Claims] 1. A method for improving the efficiency of mold setup in an NC machine tool, which is the work of disposing or replacing a mold in a turret station on a turret disk provided in the NC machine tool. , A step of reading die placement data, which is predetermined information of a die placed in the turret station, from a memory, a machining schedule which is an execution order of a plurality of NC programs, and each NC program scheduled to be machined And a process of reading the mold placement data, the machining schedule, and the plurality of NC programs from the memory, and the NC to be processed is referred to.
A step of analyzing the die setup before and after the processing while virtually specifying the program, and the machining schedule and the NC so that the die setup can be efficiently performed while analyzing the die setup.
A method of improving the setup efficiency of a mold in an NC machine tool, comprising: a step of modifying a program. 2. In order to improve the efficiency of the die setup, the step of modifying the machining schedule and the NC program gives priority to the maintenance of the machining schedule and the contents of the NC program, and changes the die arrangement data. The method for improving the efficiency of die setup in an NC machine tool according to claim 1. 3. In order to improve the efficiency of die setup, the step of modifying the machining schedule and the NC program prioritizes the maintenance of the contents of the die arrangement data, and changes the machining schedule and the NC program. The method for improving the efficiency of mold setup in an NC machine tool according to claim 1. 4. The method according to claim 1, 2 or 3, further comprising the step of displaying data relating to the mold to be arranged on the display unit when the mold to be used is not arranged at the turret station. A method for improving the efficiency of die setup in NC machine tools. 5. A mold setup efficiency improving system in an NC machine tool for improving the efficiency of the mold setup, which is the work of placing or replacing the dies in a turret station on a turret disk provided in the NC machine tool. A means for reading mold placement data, which is predetermined information of a mold placed in the turret station, from a memory, a machining schedule that is the execution order of a plurality of NC programs, and each NC program that is scheduled to be machined. And a means for reading from the memory, the die placement data, the machining schedule, and the plurality of NC programs to refer to the NC to be processed.
A means for analyzing the mold setup while virtually specifying a program, and the machining schedule, the NC for performing the mold setup efficiently while performing the analysis of the mold setup.
A die setup efficiency improving system for an NC machine tool, which is provided with means for modifying a program.