JPS58151607A - Dividing and editing device of numerical control data - Google Patents

Abstract

PURPOSE:To instantaneously generate an NC data corresponding to a workshop, by providing a dividing processor for dividing all working NC data into plural working elements and storing them, and an editing processor for selecting, coupling and editing the working elements. CONSTITUTION:A part program 21 generated in accordance with a plan at every parts to be worked is processed by a main processor PRC22 of an automatic programing device, and is stored in a all working data file 23, as a series of all working date extending from the beginning to the end. An NE dividing PRC24 divides the all working data at every tool to be used, generates a working element, and stores it in a file 25. A work assigning PRC34 inputs a state of the workshop by a data input terminal 33, decides a work assignment, and instructs editing to an NC data editing PRC26. The PRC26 couples and edits prescribed working elements at every apparatus in accordance with the work assignment instruction. By processing them by post PRCs27-29 for each machine, NC data 30-32 applied to each machine tool M1-M3 are generated easily.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to the operation of No. 1 machine tool.
Based on C data ((, Wr 7 due to changes in workplace conditions)
The present invention relates to an NC data division/editing device that instantaneously creates No. data required for t.

In recent years, many machine tools such as machining centers and turning centers have been introduced into machining workplaces. These machine tools can perform a wider variety of mechanical operations than conventional single-purpose machines, contributing to improved productivity. Figure 1 is an oblique view of such a machining workplace, for example, a machine with six N machines.

It is comprised of machine tools M1 to M5, numerical control devices 1 to 3 that control each No. machine tool, an automatic guided vehicle 4, a stocker 5, and a control computer 6. The valley NO machine tools M1 to M3 are equipped with an automatic tool changer (automatic
c tool changer (hereinafter referred to as ATC)7~
9. An automatic pallet exchange device that automatically exchanges the pallet 10 on which processed parts are placed.
et changsr (hereinafter referred to as APc) 11-16
is equipped with. All of these devices are controlled 1 based on instructions from a control computer 6.

Here, an outline of the machining work at the above-mentioned machining workplace will be explained. The machined parts set on the M r1 stocker 5 are transported by the automatic conveyance vehicle 4 to the machine (M+
~M5) and set in APO (11-13). When the machining of the part that is already being processed by the machine is completed, the APO (11 to 16) automatically reverses itself, and the previously transported workpiece is set on the machine, and the APO (11 to 16) is automatically turned over and the workpiece that was conveyed first is set on the machine, and Necessary NO data is sent from the control computer 6, and processing is started. The tools required for machining are selected by the ATO and various machining operations are performed. The processed parts that have been processed by the machine are returned to the stocker 5 by the automatic transport vehicle 4. With these steps,
The various parts set in the stocker 5 are processed one after another.

, 6.

Automatic programming languages such as APT, EXAPT, etc. are used to create the No. data required when processing the workpiece. In this method, a part programmer creates a part program according to the design drawing, and No. data is created by processing this with an automatic programming device. Machine and N.

Design +t　K Created with the assumption in mind from the beginning.

Now, each of the above-mentioned No. machine tools M1 to M3 can perform various types of machining, so when machining one part,
There are several alternatives regarding the machine used and the processing order. Therefore, it is important to consider which work should be performed by which machine in response to changes in the workplace situation, such as changes in the product mix of processed parts, the occurrence of urgent items, excess or deficiency of work to be performed on valley machines, machine tool failures, tool damage, etc. If work assignments can be changed, the workplace can be operated more efficiently.

However, with the conventional NC data creation method, when changing the machine used, machining order, etc., the necessary NC data must be created again from the part program, which takes time. As a result, the company had the disadvantage of not being able to respond to changes in the workplace situation.

An object of the present invention is to eliminate the drawbacks of the above-mentioned prior art and provide a No. 1 data division/editing device that makes it possible to instantly create necessary NC data in response to changes in workplace conditions. .

The features of the present invention are that a series of NC data for machining one part is divided into multiple work units, and this data is divided according to the situation of the workplace at the time.
The goal is to install a NO data collection processor that combines and edits the separated data.

As a result, once a part program is created without fixing the machine tool and NON position for a single part, NC data can be created instantaneously in response to a change in the work allocation according to the workplace situation.

The present invention will be explained in detail below with reference to actual illustrations shown in Figs. 2 to 8.

Prior to describing the examples, terms used in this specification will be defined as follows.

(1) Processing element: The smallest unit for allocating work to a machine. That is, the range of work to be machined with a tool of -(heavy tA) is called a machining element. Also, the NO data regarding this machining element is called machining element data.

(2) Work precedence relationship: When there is a machining element that must be executed before a certain machining element is executed, the relationship between the former (preceding applied element) and the latter (preceding machining element) .

For example, in a tapping operation, pilot drilling is a processing element that precedes the tapping operation. In addition, the order of machining that results in fewer parts is also determined by work precedence relationships.

(3) Work group: Work is distributed to one machine according to load, setup, operating rate, etc., and is an ordered set of processing elements.

(4) Record...No data and NC data creation 1
The tool path information stored in the memory device [d] for the purpose of the warping machine +! Directive report for 1st ability. This is classified into the following definition statements and operation data.

(5) Definition statement: Defines the name of the part program, the housing machine, and the components used.

(6) Operation data: This is data specifying the actual operation of the tool, and includes data such as the moving direction, speed, and stop of the tool. In addition, there are also conditions for machining, such as the position of tool exchange, the rotation angle of the table that supports the part, the clearance between the tool tip and the workpiece, the type of cutting agent and its 0N10FF, etc. It also includes condition data specifying F-S.

FIG. 2 shows an overall configuration diagram when the present invention is applied to a job shop type machining workplace consisting of NO machine tools M1 to M5. For each part to be machined, a part program 7. RAM 21 is created according to the design drawing without considering the machine tool and No. machine, and is processed by the main processor 22 of the automatic programming device, from the first machining to the final machining. are stored in the total processed data file 25 as a series of all processed data.

No data division processor 2 which is one of the features of the present invention
Step 4 divides all of this machining data for each tool used to create machining elements, and creates machining elements in the machining element file 25.
Store in. On the other hand, the work assignment processor f34 imports the status of the workplace and the data input terminal 63,
Determine work allocation according to this 1. , No. data editing processor 26, which is another feature of the present invention, instructs editing to No. data editing processor 26. According to this work allocation instruction, the No. data editing processor 26 combines and edits predetermined machining elements for each machine. By processing these by the post-brosseners 27 to 29 for each machine, the NC data 30 related to the valley machines M1 to M5 is
~Create 62.

Next, the NC data division process 8 in FIG.

The operation of the f24 will be explained using the data configuration diagram shown in FIG. 6 and the flowchart shown in FIG. All machining data 40 necessary to machining one part is the sixth
As shown in the upper part of the figure, a part program number 41 corresponding to the part, a definition statement 42, and tool specification data 43a, 43b, 43 for calling tools by multiple sets of ATOs.
c, 43d-, operation data 44a144b, 44C, 44d, etc. including the operation and conditions of the designated tool, and an F-work Nl code 45 indicating the end of the data. The reason why a plurality of sets of tool specification data and operation data are provided is that a plurality of tools are generally used when machining one part. The No. data division processor 24 collects all machining data 4 corresponding to this part.
0 is divided into data of a range to be machined with one tool as one machining element data, and stored as a machining element file 5 in a storage device constituted by, for example, a disk or a drum. On the lower left side of Figure 6, 50,6
The data lined up with 0°70 is the machining element data.

Each of the machining element data 50, 60.70 is
It includes a machining element number, definition statement, start condition data, tool specification data, operation data, and end condition data.

Next, from all the machining data 40 shown in FIG.
How to divide and create . . will be explained using FIG. 4. Note that the markings are shown on the lower right side of Figure 6.

No. 8 DVi, a condition table 81, a part program number table 82, and a definition statement table 86. No again
It is also possible to use a part of the storage device built into the day division processor f24.

When all data 41 to 45 in all processed data 40 are read out, all tables 81 to 83 in storage area 80 are cleared in step 90.

Steps 91 and 92 route all machining data 40 to
This is to identify what kind of data it contains, and depending on the identification result, the data is stored in steps 95, 94, 95, 97, 98, 1000) a.

Proceed in one direction.

First, the part program number 41, specifically, for example 1
- POOOIJ is read and this data is
3, it is stored in the table 82 in the storage area 80. Next, the definition statement 42 goes to step 94, where the storage area 8
0 is stored in table 83.

Next, the tool specification data 43a is sent to step 95, where the number of inputs of the tool specification data is checked. Since this is the first time inputting the tool specification data, this data 43a
” is sent to step 96.

In step 96, the following processing is performed. First, a series number is added to the part program number 41 (“POOOIJ”) stored in the table 82, and a series number is added to the part program number 41 (“POOOIJ”) stored in the table 82.
oool-11) is created.

This machining element number 51 is stored in the first stage of the machining element file 25. Second, 11. The definition statement 42 stored in the table 86 is stored after the processing element number 51 as a definition statement 42a. In E6, the table 810 condition data is stored as start condition data 52 after the definition statement 42a. Fourth, the tool specification data 43 that has just been input.
a is stored after the start condition data 52.

Next, the operation data 44a is the operation data of the above-mentioned pure frame tool and machining conditions? Contains multiple records consisting of specified condition data.

These operating data and condition data are identified code by code in step 92 and sent to step 97 or 98. In the case of motion data, motion data is created in step 97 and stored after the tool specification data 43a. In the case of condition data, in step 98,
Condition data is created and stored after the operational data. This Kumeoki data updates the contents of the condition table 81 in the storage area 80. In other words, the operation data 44a in the total machining data 40 is the same as the tool specification data 43a in the machining element data 50.
The data in the table 81 is updated each time condition data therein is extracted.

Next, the tool specification data 43b is inputted to step 95 via steps 91 and 92, but since it is the second tool specification data after the data 43a,
This tool designation data 43b is sent to step 99.

In step 99, the following processing is performed. That is, the data of the condition table 81 that has been updated in the process up to now is created as the end condition data of the first machining element, and is added to the end of the machining element data 50 as the end condition data 53. As described above, the creation of the first machining element data 50 is completed. Furthermore, the end of the creation of the first machining element data 50 means the start of the generation of the second machining element data 60, and the step 99 Subsequently, step 96 is executed.

That is, in step 9B, as in the case of the first processing element data 50 described in 10, processing element number 61 (1-PDOOI 2J) and definition statement 42b are set.
, start condition data 62 and warp tool specification data 43b are respectively created, and the above data 61, 42b, 62 and 43b are successively stored in the second stage of the machining element file 250. Here, of course, the data of the table 81 is stored as the start condition data 62, and the second designated tool data is stored as the designated tool data 43b. Hereinafter, as in the case of the previous ie first machining element data 50, this second machining element data 6 is added to one scene.
0 (61,42b.

62.43b and 63) Furthermore, third machining element data 70 (71, 42c, 72, 43c and 76),
... are created one after another.

When the FIN echo 45 is finally read, the data in the condition table 81 is added as end condition data to the end of the processing element data in the last stage, and the division of all processing data into 400 ends.

The work allocation processor 64 collects information from the sensor or data input terminal 36, such as the workload status of each machine M+, M2. Allocate work under certain conditions. Here, when there are multiple machines equipped with multiple tools, a search method for finding the most efficient way to assign what work to which machine is, for example, the bifurcation threshold method (B, B , ) or the branch search method (B, P, ) is well known.

For example, the machining of one part consists of six machining elements, the machining capacities of machines M+, M2, and Ms are as shown in Table 1, and the work precedence relationship of each machining element is as shown in Figure 5. Assume that there was.

In the Fang 1 table, the ○ mark indicates the machining element [POOOl -IJ~"POOO1
~6'', and the X mark indicates something that is impossible. In addition, whether it is possible or not depends on the specifications of each machine M1 to M5 and the valley machine M.
102. to the tool that executes each machining element from 1 to M5.
It depends on whether or not 215... is attached to the. Furthermore, the right end of the first person indicates the machining time of each machining element.

15・ Table 1 Furthermore, the arrows in the work precedence relationship diagram in FIG. 5 are for example.

For example, processing element (POOOl-4) means that processing cannot be started until processing of processing elements (POOOl-2) and (POOOl-3) is completed.

The various types of information shown in Table 1 and Figure 5 are sent from the sensor or data input terminal 66 to the work assignment processor 6.
4, and the work allocation processor +f34 performs work allocation to each of the machines M1 to M5 based on the well-known search theory.

In this example, processed elmmen) “POOOI-I
Machine M2 processes processing elements ``POOOl-3'' and ``POOOl-4J.''
1, further ・16 ・ machining element "P [1001-5, J and
If machine M3 works on Ol -6J, the processing time for each machine will be 60 minutes each, and it is easy to say that J8 can work most efficiently. It will be understood. This work allocation diagram is shown in Figure 6A, and the number of the machine is written in the circle.

Now, assume that machine M2 has broken down. In this case, the work that was previously handled by machine M2 must be distributed to machines M1 and Ms, and the work that has been performed by machine M2 must be distributed to machines M1 and Ms.

The machining time for M5 must also be reconsidered.

Now, simply ○
When the marks are replaced with x marks, machining elements that can only be worked on by machines M+ and M5 are automatically assigned as shown in Table 2.

Table 2 In this case, the machining time of 7 JIl for both machines M1 and M5 is 80 minutes, and the remaining machining elements rPOOO1-4J
can be assigned to Dorara. However, what must be considered here is the number of times parts are transferred from one machine to another. The longer the time spent on transfer, the more important this factor is.

Add the upper 6 parts to Figure 6B and Figure 6C.) [P
When OOOl-4J is assigned to machine M1 and machine M3
The layout diagram is shown when allocated to . As is clear from the figure,
The method shown in Figure 6c, which requires fewer parts to be transferred, is better.
This is more advantageous than the layout in the Layer-6B diagram.

Editing of the No. data is carried out by the No. data editing process 26 in accordance with the work allocation instructions from the work allocation processor 34.
It is done. Off figure -? FIG. 8 shows a flowchart of the NO data editing processor 26 for this purpose.

On the upper side of Fig. 7, there are six processing elements 5060+70+1 hidden by the vertical division process shown in Fig. 3.
1(]+12[1) and 130, and the valley processing element numbers are made to correspond to those shown in the first layer. As explained in FIG. 6C, an example of fii+effect processing will be shown assuming a case where the machine M2 breaks down.

The No. data for machine Mj is edited by machining element data 50 and 70, and the No. data for machine Mj is edited by machining element data 50 and 70.
The data is machining element data 60.110,120
and 160 and edited by K.

First, due to a failure of machine M2, a faulty p.
When j# 11m'@ is transmitted, the work assignment processor f34 executes the aforementioned work assignment and transmits the assignment result and editing command to the Nc data editing processor f26. The No. data editing process 26 reads the above-mentioned allocation results and editing commands in step 160, and proceeds to step 161. In step 161, from the machining element file 25 shown in FIG. Predetermined machining element data (work group 150 consisting of work groups 140, 60, 110, 120 and 130 consisting of 50 and 70) are taken out and arranged.

, 19.

Let us describe the first work group 140.

In step 162, first, from the forces U and elements 50 and 70 arranged in step 161,
The start condition data 52 of the machining element data 50 and the end condition data of the previous machining element data are compared. In this case, since there is no data before the processing element data 50, the start condition data 52 is directly set to indicate that the initial condition of the tumor is poor.

Next, start condition data 72 for processing element data 70
is compared with the end condition data 53 of the previous machining element data 50, and if there is a difference, the different data is inserted after the start condition data 72 as condition change data 141. When many machining elements exist in one work group, the above-mentioned operation of inserting condition change data is performed one after another.

After that, in step 166, the start condition data 52
, 72, end condition data 53, 73. The second and subsequent part program numbers 71 and definition statements 42c are removed. Then, in step 164, the F-work N echo 142 is added to the end of the data, and the total processed data 140 of the first work sheep is %d.

The same process was performed for the Fang 2 working group.
Condition change data 151.1.52 are newly inserted, F-work N■ code 156 is added, and all machining data 150 of the work group of fang 2 is completed.

Note that there are various methods of dividing the total machining data 40 into machining element data. For example, as each machining element data, tool finger and foot data 43a, 43
b, 43 cm, and motion data 44a.

44t), 44c... and the part program number and definition statement as one machining element.Furthermore, consider F engineering N engineering text as one machining element, and create a machining element file. Store the start conditions 52, 62, and 72 for each machining element.
There is a method of associating the processing elements with the processing elements and the end conditions 53, 63, 73, etc., and storing them in the storage area. According to this method, when editing, a machining element consisting of a Marbert program symbol and a definition statement is collected, its end condition is compared with the start condition of the first specified machining element, and condition change data is inserted. Since the editing work can be performed by repeating the procedure of combining the processed element data after doing so, the division editing work is simplified.

Above, we considered the range to be machined with one type of tool as a machining element, but due to constraints such as machining accuracy, there are some items that must be machined continuously by the same machine after being clamped once on the machine, so this condition is specified. By doing so, it is possible to consider a method of handling it as one processing element.

The No. 1 day division editing device ti-1 according to the present invention can also be used to improve the line balance of a transfer line that performs mixed production.

In the unmanned machining system, various #4 parts can be machined without replacing the tools attached to the machine. For example, even if a certain tool is damaged during machining, if the same tool is attached to a machine that can replace the work, machining can be continued by using that tool. In addition, it is possible to efficiently allocate work to minimize the number of tool changes. All of the above effects are due to the fact that work can be assigned in units of machining elements, and this is because the present invention enables rapid creation of NC data combining machining elements.

In addition, when a plurality of small parts of various types are packed into one barre and subjected to manual labor, the NC data according to the present invention can be used without individually saving all the NC data when changing the combination. It can be created using a division editing device.

As described above, according to the present invention, it is possible to freely create NC data that combines all machining number data for machining one part divided into mantissa machining elements. By allocating work to each processing element in response to changes in the workplace, it is possible to improve production efficiency, such as improving equipment operating rates, reducing number of stages, and shortening parts lead time.

[Brief explanation of drawings]

Figure 1 is the first drawing of a well-known mechanical factory;
The figure is a block diagram of a mechanical caroe workplace to which the No data division knitting device according to the present invention is applied, and Figures 3 and 4 are data for explaining the operation of the No data division processor used in Figure 2. Configuration diagram and flowchart, Figure 5 is an example of a work precedence relationship diagram, Figures 6A, 6B and 6C are diagrams showing the work allocation results, and Figure 8 is used for Figure 2. N being done. 3 is a data configuration diagram and a flowchart for explaining the operation of a data editing processor. FIG. M1-M5: NC! Machine tools, 1-6: Numerical control device, 4: Automatic guided vehicle, 5: Store force, 24°6: Control computer, 7-9: ATO. 10 Nipa Shit, 1
1-43: APo. 21: Bart program, 22: Main processor, 26: All machining data files, 24: NC data division processor, 25:
〃E element file, 26: NC data editing processor, 27~
29: Bost processor, 60-32: NC data, 63: Centimeter or data input terminal, 34: Work assignment processor, 40: All machining data, 50.60.70: Machining element data, 80;
Storage area, 110.120, 130: Machining element data, 140.150: All machining data, 141.15
1,152: Condition change data, 142.153
: F Engineering N Echo Do. , 27゜frc Figure 2 f3 Size 7 Figure 5 Figure 38-

Claims (1)

[Claims] 1. In a NO data creation device that creates NO data for a NO machine tool whose operation is controlled by the NO data, a series of all machining number data is divided into a plurality of machining elements. This data division/editing device comprises an NC data division processor which stores the divided processing elements, and an NC data editing processor which selects and combines one or more of the divided processing elements. 2. It is characterized by the addition of a work assignment processor that determines the assignment of work to each machine tool according to the work load status of multiple machine tools, the tool attachment state, and the work precedence relationship between each sword element. N according to claim 1, which is . Data division editing device. 6. The NC data division processor includes a storage means for storing individual machining element data, and the storage means includes at least start condition data for starting machining of each machining element, and end information at the time when machining ends. The No data division editing device according to claim 1, characterized in that it includes a storage area for storing condition data and operation data, 4. The termination condition data of each processing element is divided by a division processor. 7. The No. data division/editing device according to claim 6, wherein the data is updated each time during processing by analyzing binding data included in the motion data of each machining element. 5. When the NC data editing processor combines and edits predetermined data among the machining element data divided by the NC data dividing processor, the NC data editing processor combines the start condition data of the machining element data with the previous edit. 5. The No. data division/editing device according to claim 4, wherein the processing element data is compared with end '*note data, and new condition data is inserted based on the difference.