JPH04262828A - Die change instruction device for turret punch press - Google Patents

Abstract

PURPOSE:To perform an efficient die setup of a turret punch press to a working plan which makes plural NC programs of schedules, etc., an object. CONSTITUTION:Using files for dies prescribed by each NC program are inputted in sequence to the working plan of the turret punch press making plural NC programs an object, a total sum calculating part 11 to calculate the optimum of the entire die change information with respect to all NC programs is provided and a die change instructing part 14 which can instruct correctly which die and when the die should be changed is provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold change instruction device for a turret punch press that can efficiently set up molds for machining schedules involving a plurality of NC programs.

0002

[Prior Art] As is well known, a turret punch press has a mold mounting station on the turret that can mount a large number of molds, and with any mold mounted on any mold mounting station, an NC The mold mounting stations designated by the program are indexed to predetermined processing positions, and press processing is performed sequentially using the indexed molds.

[0003] Therefore, in such a turret punch press, the mold to be used for the NC program that will be machined from now on is confirmed on the work sheet, etc., and the mold to be used is installed at the mold mounting station specified by the NC program. The mold must be replaced as appropriate during mold setup work to ensure that the

[0004] Conventionally, mold replacement instructions for this type of turret punch press were issued by job (JOB) for each NC program.
) units.

[0005] In other words, the conventional mold change instruction device, which is integrated with an automatic programming device or the like, cannot issue instructions as to which mold should be installed at which mold installation station for the job to be performed. , workers perform mold setup work according to these instructions.

[0006] However, an NC program is not necessarily set one-off, but multiple NC programs are often set within one schedule, so in the conventional mold exchange method, each NC program is It is necessary to replace the parts each time, resulting in a problem of poor work efficiency.

[0007] Therefore, in order to minimize the number of mold replacements, the operator may first execute an NC program that does not require mold replacement, or refer to the work sheet for multiple NC programs to execute multiple NC programs. We are dealing with this problem by setting up the molds for each NC program all at once.

However, if programs that do not require mold replacement are executed first in order to reduce the number of mold replacements, the execution order of the NC programs will be reversed, resulting in delivery delays and other machining lines. Problems such as confusion may occur. Furthermore, the freedom to select NC programs is also limited.

[0009] Furthermore, the method of exchanging molds for multiple NC programs at once cannot be performed by anyone but a highly skilled person, and has its own limitations.

0010

[Problems to be Solved by the Invention] As mentioned above, the conventional mold replacement instruction device for a turret punch press outputs mold replacement instructions in units of NC programs, so it is difficult to handle multiple NC programs such as machining schedules. For the target processing, there was a problem in that the mold could not be replaced efficiently.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a mold exchange instruction device for a turret punch press that can improve the above-mentioned problems and efficiently perform mold exchange even for multiple NC programs. With the goal.

0012

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a mold exchange instruction device for a turret punch press having the structure as described in the claims.

[0013]

[Operation] The turret punch press mold change instruction device of the present invention calculates the total while determining the mold change time for each NC program for a machining schedule that targets multiple NC programs, so the setup work is simplified. The mold replacement timing can be determined optimally based on the machining schedule for more efficient processing.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 2, the turret punch press 1 of this example has a so-called bridge type frame 2.
Upper and lower turrets 3 and 4 are provided within this frame 2.

The upper and lower turrets 3 and 4 are rotatable in a horizontal plane around their central axes, and as shown in an enlarged plan view in FIG.
T). T indicates a three-digit station number, the first digit indicates a track number, and the second and third digits indicate a serial number. A tool exchange door 5 is provided near the mold exchange position POS of the frame 2. This tool exchange door 5 is opened when replacing the mold.

Each mold mounting station S (T
) is indexed directly below the striker provided at the lower end of the ram located in the center of the frame 2, and the workpiece W guided between the turrets 3 and 4 by the downward movement of this striker. Predetermined processing is performed. The work W is held by a work clamp device and guided on the table 6.

The turret punch press 1 having the above structure is controlled by an NC device (not shown). This NC device is connected to a central control room via a local area network (LAN), not shown, and sequentially executes jobs based on a machining schedule created in the central control room. For this purpose, an automatic programming device consisting of CAD/CAM is installed in the central control room.

Here, for example, a plurality of NC programs NCP001, 002, 00 are created using the CAD/CAM.
Suppose that Schedule 1 is created as a machining schedule with the following job configuration by combining these.

[0020] NCP001 100 sheets NCP
002 200 sheets NCP003 300 sheets, this Sugesur 1 is provided to the schedule operation device as appropriate via the above LAN, and each NC program N
CP001, 002, 003 are sequentially sent to the NC device.

The NC device analyzes the input NC program code, rotates the turrets 3 and 4, indexes the mold directly below the ram, moves the workpiece, lowers the ram, and performs sequential press processing. I'm going.

FIG. 1 is a block diagram showing the configuration of a mold replacement instruction device applied to the turret punch press 1. As shown in FIG. Generally, this mold exchange instruction device is configured integrally with the CAD/CAM, the schedule operation device, or an appropriate control device, but it may be configured independently with respect to other control devices.

The mold exchange instruction device 7 includes a machining schedule input unit 8 for inputting a machining schedule for a plurality of programs, for example, a schedule program for scheduled operation;
An NC program sequential extraction unit 9 extracts NC programs scheduled for processing in the order of processing, and a used mold information extraction unit 1 extracts used mold information for the sequentially extracted NC programs.
0, and a sum calculation unit 11 that calculates the sum of the used mold information that is sequentially extracted. The sum calculation section 11 is connected to a mold replacement time determining condition storage section 12 , a mounted mold list storage section 13 , and a mold replacement instruction section 14 . The summation calculation method will be explained in detail with reference to FIGS. 7 and 8.

The used mold information extraction unit 10 extracts, for example, each NC program 001, 2, and
3, the used mold file 15 shown in Figures 4, 5, and 6,
16 and 17, and send these files to the sum calculation unit 11.
This is what is output to. Each file 15, 16, 17 contains a mold shape A to be mounted on the mold mounting station indicated by the T number corresponding to the mold number (T number),
B, C... are entered. Actually, in addition to the mold shape, the mounting angle is also recorded.

[0025] Therefore, the sum calculation section 11
Perform the following summation calculation according to the procedure shown in .

In FIG. 7, initialization is performed in step 701, mold files to be used are inputted one by one in step 702, and the total sum is calculated in step 704 until the end of the schedule is reached via step 703.

In the total calculation, information on one mold is input in step 801 of FIG. 8, a replacement mold is determined in steps 802 to 808, and a replacement time is determined for each replacement mold. .

That is, in step 802, it is determined whether the station S(T) has already been used in the current schedule, and in step 803, for the station already in use, it is determined whether the current mold is the same as the previous mold or not. It is determined whether they have the same shape or not, and if they are not the same, the process moves to step 804 and is registered as a mold that should be replaced during schedule execution.

If it is determined in step 802 that the station is not yet in use, the process moves to step 805, and it is determined whether the mold shape is already set in another station or not. If the mold is new, the process moves to step 807 and is registered as a mold that can be set up before the schedule is executed. If the shape has already been set in step 805, the process moves to step 806, the number of molds held is checked to see if there is a mold that can be set here, and if it is within the number of possessions, step 807
Register it as a mold that can be set up before executing the schedule. If the number of held molds is insufficient in step 806, the molds that have already been set must be replaced, so the process moves to step 804 and is registered as a mold to be replaced during schedule execution.

In step 808, the data end is checked;
The process returns to step 801 until the data end is reached. If it is determined in step 803 that the mold has the same shape as the previous mold, the process returns to step 80 without any registration processing.
Return to 1.

Through the above processing, schedule setup information 18 shown in FIG. 9 can be generated for the schedule 1 described above. However, the setup information shown in FIG. 9 is information when no molds are mounted at all of the turret mounting stations S(T).

According to FIG. 9, mold E, which must be replaced before job 2 in mold replacement for each NC program, is shown as a mold to be replaced before job 1 is executed. Similarly, mold G is job 1 and mold F is job 2.
It is said that it should be replaced. In this way, by storing arbitrary contents in the mold replacement timing determining condition storage unit 12, the mold can be optimally replaced under arbitrarily determined conditions, such as replacing the molds as early as possible or all at once. It indicates when to replace it.

By the way, in reality, some kind of mold was attached to the turrets 3 and 4 in the previous processing, so
The contents of replacement will differ depending on the installation contents. Therefore, in this example, the total sum calculation unit 11 refers to the stored contents of the installed mold list storage unit 13, calculates the case where the mold must actually be replaced, and generates the mold setup information as shown in FIG. is regenerated and outputted from the mold exchange instruction section 14.

Therefore, the operator only needs to replace the mold by referring to the mold setup information shown in FIG. 10, which is different from replacing the mold based on the mold setup information created for each NC program. , the mold can be replaced efficiently.

As described above, in this example, the mold setup information for the schedule is generated by looking at the mold usage information for the entire schedule under the mold replacement timing conditions set arbitrarily, so that the mold setup information is generated for the schedule all at once. This makes it possible for unskilled workers to set up molds, eliminates mistakes such as misreading setup information, and significantly shortens schedule setup time. The same applies not only to schedules but also when multiple programs are arbitrarily selected. In the above embodiment, the NC program extraction section 9 and the used mold information extraction section 10 are provided, and the used mold information (used mold file) for each NC program is provided.
is outputted to the total sum calculation unit 11, but if the used mold file has already been generated, it is equivalent to output this directly to the total sum calculation unit 11.

The present invention is not limited to the above-mentioned embodiments, but can be implemented in any appropriate manner by making appropriate design changes.

[0037]

Effects of the Invention As described above, the present invention is a mold change instruction device for a turret punch press as described in the claims. Replacement instructions can be given, and mold setup work can be performed efficiently.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a mold exchange instruction device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a turret punch press implementing the present invention.

FIG. 3 is an enlarged plan view of the turret of the turret punch press.

FIG. 4 is an explanatory diagram of a mold file used by Jeb 1.

FIG. 5 is an explanatory diagram of a mold file used for job 2.

FIG. 6 is an explanatory diagram of a mold file used for job 3.

FIG. 7 is a flowchart illustrating an overview of processing performed by the total sum calculation section of the mold exchange instruction device.

FIG. 8 is a flowchart showing details of a summation calculation routine.

FIG. 9 is an explanatory diagram of schedule setup information.

FIG. 10 is an explanatory diagram of mold setup information.

[Explanation of symbols]

7...Mold replacement instruction device 8...Processing schedule input section 9...NC program sequential extraction section 10...Mold information extraction unit used 11...Total calculation section 12...Mold replacement timing determination condition storage unit 13...Mounted mold list storage unit 14...Mold replacement instruction section

Claims (1)

[Claims] Claim 1: A large number of mold mounting stations are provided on the turret, any mold is mounted on any mold mounting station, and the mold mounting station specified by the NC program is indexed to a predetermined processing position. In a mold change instruction device for a turret punch press that performs predetermined machining with a predetermined mold, there is a machining schedule input section for inputting machining schedules for multiple NC programs, and a machining schedule input from the machining schedule input section. , an NC program extractor that extracts NC programs in the order of execution, and inputs the NC programs sequentially extracted by the NC program extractor, and determines which mold should be set up in which mold mounting station before which NC program is executed. The present invention is characterized by comprising a summation calculation section that optimally calculates the summation calculation section, and a mold replacement instruction section that outputs a mold replacement instruction as setup information before executing each NC program based on the calculation result of the summation calculation section. Mold change instruction device for turret punch press.