JPS62275528A - Summerizing method for sheet metal parts - Google Patents

Abstract

PURPOSE:To remarkably curtail a set-up time and shorten the working time by making the program summerizing similar parts into some groups from die data, the number of press machines, scheduling, etc. and performing a NC turret punch pressing. CONSTITUTION:The program is made summerizing similar working parts into each group in the range not exceeding the station numbers on each size of a die holder from the die data, number of press machines, scheduling, etc. necessary for sheet metal working. The automatic edition program is made to perform the leveling of the program arranging the die necessary for working the part of the inside of the group in the order of blanking based on the die arrangement of a die holder and equipment load, and the summerization of the sheet and tool of the inside of the same equipment. The program is made so as to minimize the die set-up and die change on the inputting order among groups. Each program is then inputted into the control device of the machine via an outputting device to perform the continuous sheet metal working. In this way, the curtailment of the set-up time and shortening of the working time in a NC turret punch press can be realized.

Description

Detailed Description of the Invention V. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for processing sheet metal parts, and particularly to an intensive processing method for sheet metal parts suitable for small-lot production.

[Conventional technology]

An example of a conventional parts intensive processing method is JP-A-58-2.
Those shown in 027.52 are listed.

This method uses multiple tools selected within a range that does not exceed the number of tools. In this method, individual parts are processed continuously according to the tool module. All parts are processed in advance, the parts are aggregated, and the parts and groups are associated with each other when planning the schedule. However, because production instructions for parts within a group are not always given at the same time, group efficiency (the number of parts that can be continuously machined in one setup) during execution was not very high. Further, the above-mentioned conventional technology does not take production instructions into consideration.

There was a problem with the parts consolidation rate. In addition, the conventional parts aggregation method uses the Hamming distance as an evaluation function during parts aggregation, even though there are restrictions on the position of tool installation. Therefore, the maximum number of tools that can be installed at each position exceeds the number However, when it comes to tool installation, there is a problem in that the weighting of the maximum number of tools is not taken into consideration.

[Problem that the invention seeks to solve]

The present invention solves the above-mentioned problems, and targets a plurality of parts that have production instructions at the same time, and when there are restrictions on the position of mounting stars, the number of board setups is 9. It is an object of the present invention to provide an intensive processing method for sheet metal S products that significantly reduces standard processing time.

Furthermore, as shown in Table 1 and Figure 6, setup interference time occurs when multiple types of parts are processed using multiple equipment.
The object of the present invention is to provide an intensive processing method for sheet metal parts that can shorten this setup interference time and improve the operating rate of equipment.

[Means for solving problems]

For this purpose, the present invention uses a take that displays the mold take necessary for parts processing, the number of press equipment in possession, a schedule planning program, etc., and allows similar parts to be processed within a range that does not exceed the number of stations for each mold size of the mold holder of the equipment machine. In addition to creating a program that aggregates the parts into several groups, the program also arranges the dies necessary for machining all the parts in the group in the order of punching based on the die placement of the die holder, since the placement of dies changes even for the same part. Create an automatic editing program that equalizes the load on each piece of equipment, consolidates the materials, material selection, and tools used within the same equipment, and minimizes the loading order between (g) and (1) to minimize mold placement and mold change. The present invention is characterized by an intensive processing method for sheet metal parts, in which a program is created to create a similar program, and each program is inputted to a control device of the machine via an output device to perform continuous sheet metal processing. That is.

[Effect]

In this method, a daily or weekly schedule is created using a one-day planning program, giving priority to delivery dates. In this case, the month, day, or week for inputting each part into the NC turret punch press process is determined.

Then, collect the parts of the same input port (circle) and divide them into groups according to the parts total of 10 grams.For each group, tally the molds required to process all the parts included in that group,
Decide on the placement on the mold holder.

From this mold arrangement information and the usage mold order information of each part, NC
Information Eye 4 @ Edit 0 This NC information is printed on paper tape,
The NC information is output to the NG turret punch press as required. - 10,000, The aggregated parts information is read into the input order 9 work distribution program, and a detailed schedule for each group is created. This detailed sketch and mold placement information are paired together to issue work instructions.

Furthermore, when a plurality of different types of parts are taken from a regular length material, the material collection is laid out in order to improve the material yield 9, but this is done for each group after the parts are aggregated. This material removal algorithm is performed using the method developed in R. However, conventional material removal 9 is often fixed (the same machine a [K is used, the same material and the same thickness are In this method, the image data (taken from a standard length) is varied, so that computer processing can be performed in a short time. [Embodiment] An embodiment of the present invention will be described below with reference to FIG. 1. Its composition is the material 1 for processing the parts (the standard length is the exact size),
A loading device 2 for supplying the material 1 to the NC talent punch press, an NG turret punch press 3 for processing parts by punching a predetermined hole in the material 1, and a program control of the NG turret punch press. A control device flc 4 for punching, a mold holder 5 for selecting a predetermined mold from a plurality of molds and punching holes according to the commands of the NC control device 4, and a ninth unloading device for discharging completed parts. and pan controller 7 and NC for executing the schedule planning NC information automatic editing 9 parts aggregation program.
An output device 11 consisting of an output means (a paper tape puncher in the case of a paper tape, a floppy drive device in the case of a floppy disk) 8 that automatically outputs the result of automatic editing of information.
and data 9 on the types of molds required to process each part ◇These machines are used to continuously process multiple types of parts with one mold setup.

The flow of information and materials from parts collection to production instructions in this method will be explained below.

First, from the schedule table output by the schedule planning program 10-1, 4! q from the mold information (data 9) required to process the RS product! Compute the similarity of r parts,
Grouping is performed using a program 10-3 that aggregates similar parts. A constraint on this grouping is that the number of types of molds required to process all six parts included in the same group does not exceed the number of stations for each size of mold holder 5 shown in FIG. FIGS. 3 and 4 show this grooving and work distribution algorithm. In other words, Figure 6 shows the consolidation period, number of equipment owned, and %JO.
The distribution processing Jll for each greep condyle and group is determined based on the material, material thickness, Hamming distance, etc. of B, and the NC information automatic editing program 10-6 is created based on this. In addition, Figure 4 shows J
Figure 5 shows an algorithm that is almost the same as the fifth factor for OB, and the NC information automatic editing program 10-6 is created using this algorithm. (i.e., the number of installed equipment, material negative, material thickness, Hamming distance, etc.) is shown, and the algorithm for determining the equipment input order is created.

As described above, the equipment input order, the group aggregation group order, the processing order of parts within the group, the mold exchange order, etc. are compiled in advance as NC information.

In the above explanation, the Hamming distance is an evaluation function that quantitatively represents the degree of difference between parts, and the Hamming distance at the mounting location 1 of the mold is expressed as ■1. In this embodiment, the Hamming distance ratio Hri is adopted as the Hamming distance in consideration of the maximum number of molds to be installed as described above.

In other words, Hri = □ where iMAX is 1 Hammer AX 0 indicating the maximum number of installation types at installation location 1 Also, the total value of the Hamming distance ratio from installation location 1 to installation location n is Tr = Σ
Hri and υ, when installing the board, take out the one with the highest Tr value.0 The created NC information is outputted to a paper tape or floppy disk by the output device 8, and loaded into the control device 4. be done.

10,000, the material 1 is transferred to the loading device 2, and 5. It is attached to an NC turret punch press 6, and by rotating the mold holder 5 using the control device 4, parts processing is performed while selecting a plurality of molds according to a predetermined order of use of the molds. At this time, by continuously machining all the parts of the same group of grooving described above, it is possible to continuously machine a plurality of different types of parts without any setup in - times of setup. In addition, the group with the minimum type exchange from the type arrangement between groups is set as the first injection order, and the group to be introduced second is the group with the minimum type exchange with the type arrangement of the first group, and the same applies. [We will decide on the fifth and subsequent ones.]

Next, setup interference will be explained.

Table 1 shows a simple production plan to explain setup interference.

The equipment in Table 1 consists of three machines, each of which is assigned nine jobs (JOB) from A to machining, and the input order is also determined for each piece of equipment. That is, the equipment 1 is allocated with inputs A, B, and C, and the input order is A-B-
C, and the other equipment is 9 as shown in the figure. The setup processing time for each jib is also determined as shown in the figure.

FIG. 6 is a Gantt chart when one worker is in charge of the three pieces of equipment shown in Table 1. The part shown as setup interference (unmarked part) in the diagram indicates that one worker performed KR work on one or more pieces of equipment at the same time, causing equipment to wait for a setup change (for example, equipment 2 indicates that setup occurs from 9:00 to 10 hours, and setup occurs for equipment 6 from 10:00 to 11 hours). The occurrence of such setup interference is related to the ratio of one setup time to machining time and the number of equipment handled by one worker, but especially if the setup time is very small compared to the machining time, The probability of interference occurring is low. Conventionally, increasing the loft was more effective than K, but this had the disadvantage of increasing work in process 9. In the 0 embodiment, similar parts are processed intensively, so only K requires setup when glue 1 changes. no longer
Furthermore, the time taken to change setups between groups can be minimized by optimizing the input order. Therefore, the probability of setup interference occurring can be significantly reduced, which has the effect of improving the operating rate of equipment.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, N
The setup time for C turret punch presses can be significantly reduced, the number of parts to be machined can be expanded, and the standard time can be reduced.In workplaces that own multiple t*Nc turret punch presses, only one person can Multi-machine operation, in which a worker is in charge of setting up and servicing multiple machines, is generally adopted, but the setup time is extremely small compared to the machining time, making setup interference less likely to occur as described above. The operation of multiple units can be expanded, and the operating efficiency of the equipment can be improved.

[Brief explanation of drawings]

Fig. 1 is a bird's-eye view showing the structure of the present invention, Fig. 2 is a plan view showing the number of mold holder stars that can be attached by size, and Fig. 3.
FIG. 4 is a flowchart showing the work distribution algorithm, FIG. 5 is a flowchart showing the algorithm for determining the input order, and FIG. 6 is a diagram explaining setup interference. 1... Workpiece, 2... Loading device, 3...
NC turret punch press, 4...control device, 5...
- Mold holder, 6... Unloading device, 7...
Personal computer, 8... Output means, 9... Data, 10.
...Program group. 'J, 13 Akira Kuchi 4 Zusui 5 Zunu 6 Kuchi

Claims (1)

[Claims] A loading device for supplying a material to be processed into a NC turret punch press, an unloading device for discharging processed parts, an NC turret punch press for punch-pressing the material to process desired parts, and the N.
A mold holder that is installed on the C turret punch press and holds multiple molds, a control device that automatically controls the NC turret punch press, data that displays mold data necessary for processing sheet metal parts, and the number of press equipment in possession. and an output device that outputs desired information from a schedule planning program or the like to the control device. A program is created that aggregates similar machined parts into several groups within a range not exceeding the number of stations for each die size, and also creates a program that collects similar machined parts into several groups within a range not exceeding the number of stations for each die size, and also calculates the necessary processing for all parts included in the group based on the die arrangement of the die holder. Arrange the molds in the order of punching, level the equipment,
Create an automatic editing program for consolidating materials, material thicknesses, tools used, etc. in the same equipment, and create a program so that the input order between the groups is such that mold placement and mold exchange are minimized, Each of the programs is input to the control device via the output device, delivery processing is performed according to a mold use order predetermined for each aggregate group, and parts of all groups are sequentially and continuously processed into sheet metal. Intensive processing method for parts.