JPH0546227A - Nc data preparing method - Google Patents

Abstract

PURPOSE:To perform multikind small scal production by synthesizing and editing the data in accordance with the division of the data. CONSTITUTION:The data equivalent to a product code are retrieved from a standard data base and prepared (S2). It is investigated whether or not the option processing is performed (S3). Further, it is investigated whether or not the special processing is performed (S4). The presence of the fluctuation data is confirmed and at the time of the data, they are prepared (S5). As above, three kinds of the prepared data are automatically edited to the shape which an NC processor can use, by a data editing part (S6). Next, the data equivalent to the option code are retrieved from the standard data base (S8). Further, by the sub-system to prepare the sub-standard data, the data equivalent to the option code are newly prepared, and it is prepared (S9). The newly prepared data are added to the standard data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for creating NC data in the case of carrying out small-lot production of various products using an NC processing machine.

[0002]

2. Description of the Related Art It is said that an NC processing machine is rich in flexibility and suitable for small-lot production of a wide variety of products because the processing content can be controlled by the content of NC data to be input. But,
It takes a huge amount of time to create NC data for that purpose. In particular, the feature of the product targeted by the present invention is that a variety of products are produced in small quantities by slightly changing the specifications of the standard product. This will be described with reference to FIG. 8. When optional processing is added to the standard specifications of a black circle, an ellipse with diagonal lines is formed, and when special processing is added, a mesh ellipse is formed. In this way, there are many cases and types in comparison with the standard specifications, and high-mix low-volume production is achieved.

Various attempts have been made to create NC data for this high-mix low-volume production. This is shown in the table below.

[0004]

By the way, these methods are not necessarily optimum in terms of effective use of the area of the storage device of the computer and quick creation of NC data. Satisfying NC
There was a strong demand for a data creation method.

The present invention has been made in view of the above circumstances, and an object of the present invention is to store NC data in the case of high-mix low-volume production using an NC machine tool in the area of a storage device of a computer. An object of the present invention is to provide an NC data creation method that satisfies both the aspects of effective use and quick creation of NC data.

[0006]

In order to achieve the above object, the NC data creating method of the present invention comprises NC data for processing by an NC processing machine, standard data for processing a standard product, and the above standard. Composed of semi-standard data for adding selective processing to the product and variation data for adding special processing to the standard product, and combining these data according to the classification of the data It is characterized in that desired NC data is created by editing.

When the number of times of use of the semi-standard data is less than a predetermined number, NC data is created each time, and when the number of times of use exceeds a predetermined number, the created NC data is stored in a storage device. If there is no free space on the storage device,
It is characterized by erasing the oldest data of the quasi-standard data and storing new data.

Further, it is characterized in that when the number of times the semi-standard data is used exceeds a predetermined number, the semi-standard data is stored and registered in the standard data storage section as standard handling data.

[0009]

[Operation] NC data for processing by the NC processing machine,
Standard data for processing standard products, quasi-standard data for adding selective processing to standard products, and variation data for adding special processing to standard products 3
Composed of seed data. By combining and editing data according to the division of these data, NC data for processing standard products, NC data for selectively processing standard products, special processing for standard products It is possible to create NC data for

When the number of times the semi-standard data is used is less than the predetermined number, NC data is created each time, and when the number of times the usage is more than the predetermined number, the created NC data is stored in the storage device. In that case, when there is no free space in the storage device, the oldest data of the quasi-standard data is erased and new data is stored, so that the learning function can be provided.

Further, when the number of times the semi-standard data is used exceeds a predetermined number, the semi-standard data is stored and registered as standard handling data in the standard data storage section, so that the NC data that is frequently used can be effectively utilized. ..

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. Figure 1
Is a flowchart showing the operation of the present invention. In the figure, the numerical value following S indicates a step number. [S1] First, as an NC data creation instruction to the input / output unit,
A code corresponding to a standard product (hereinafter referred to as a product code) and a code corresponding to the contents of optional processing and a one-to-one correspondence (hereinafter referred to as an option code) are input. [S2] The system changes the data corresponding to the product code to
Prepare by searching the standard database. [S3] Check if there is optional processing, and if yes, S
8. If not, proceed to S4. [S4] It is checked whether or not special processing is performed. If yes, the process proceeds to S5, and if not, the process proceeds to S6. [S5] The system confirms the presence or absence of fluctuation data and prepares it if there is data.

[S6] 3 prepared as described above
The data editing section automatically edits the type of data in a form that can be used by the NC processing machine. [S7] The data output section outputs the data to the outside. [S8] Next, the data corresponding to the option code is
Search from a semi-standard database. If the corresponding data is found, the process proceeds to S11, and otherwise, the process proceeds to S9. [S9] Subsystem for creating quasi-standard data (hereinafter,
Data corresponding to the option code is newly created by the quasi-standard CAM system) and prepared. [S10] The newly created data is added to the semi-standard data. When adding semi-standard data, if the semi-standard data does not fit in the area of the computer's storage device, a method is used to automatically delete the data in the oldest time stamp and add the data to the empty area. is doing. This makes it possible to effectively use the area of the storage device of the computer and to quickly create data for optional processing. [S11] The corresponding data is retrieved from the semi-standard database and prepared.

FIG. 2 is a schematic block diagram of the system of the first embodiment of the present invention. The system consists of three types of databases: input / output unit 1, standard data 3, semi-standard data 2, and variable data 4, data editing unit 6, data output unit 7, semi-standard CAM.
It consists of system 5. The input / output unit 1 is an interface with the user of this system, and is composed of an input device such as a keyboard and an output device such as a cathode ray tube. The user of this system gives an instruction to create NC data, It displays the operating status of this system. The standard data 3 is data for creating a standard product and is registered in the system in advance. This data can be classified and searched by adding a product code. The semi-standard data 2 is data for optional processing, and is automatically created by the semi-standard CAM system 5 and stored and accumulated in the system. Similar to the standard data, this data can be searched and quoted by adding an option code. Further, when this data is quoted, the date and time when it was quoted is added as a time stamp.

The fluctuation data 4 is data for performing special processing, and is created in advance by the user of this system using an automatic programming device, a parametric automatic NC data creating device, etc., and temporarily registered in this system. The data. The data editing unit 6 is a unit for automatically synthesizing and editing the necessary data extracted from the standard database, the quasi-standard database, and the variation database as data usable by the NC processing machine. The NC data output unit 7 is an NC
NC data synthesized and edited by the data creation unit
It is for output to the outside in the form of an electrical signal or the like.
The semi-standard CAM system 5 is for creating semi-standard data, and has built-in logic, data, etc. for creating semi-standard data according to the option code.

3 and 4 show a second embodiment of the present invention. FIG. 3 is a flow chart showing the operation in the second embodiment of the present invention. In the figure, the numerical value following S indicates a step number. [S21] First, as the NC data creation instruction, the product code of the standard product or the semi-standard product to be created and the option code are input. The product code is a number that has a one-to-one correspondence with the product to be processed. [S22] Next, the learning control unit receives the product code,
Add the usage count to the usage count counter for each product code.
When the number of times of use is less than the number of times of mastery (a fixed number n1), an NC data creation instruction corresponding to the product code is sent to the NC data creation unit, and the process proceeds to S28. If the number is large, an instruction to search and output NC data corresponding to the product code is sent to the accumulated data section, and the process proceeds to S29. If they are the same, the NC corresponding to the product code is sent to the NC data creation unit.
A data creation instruction and an NC data registration instruction are sent, and the process proceeds to S23. [S23] When the data registration instruction is sent together with the NC data creation instruction, NC data corresponding to the product code is created, and the created NC data is registered in the accumulated data section.

[S24] It is checked whether or not there is a vacant area in the accumulated data portion. If there is a vacant area, the process proceeds to S26, and if not, the process proceeds to S25. [S25] If the data to be registered does not fit in the area of the accumulated data portion, the data registered in the accumulated data are deleted in the order of the oldest time stamps and registered in the empty area. In addition, for the deleted data, the number of times the usage counter of the learning control unit is set to zero at the same time. This makes it possible to effectively use the storage area of the computer and to quickly create NC data of frequently used products. [S26] The created NC data is registered in the empty area of the accumulated data section. [S27] The NC data output unit outputs the NC data sent to the outside in the form of a paper tape or an electric signal. [S28] If the instruction sent from the learning control unit is only the NC data creation instruction, the NC data creation unit creates NC data corresponding to the product code and sends it to the NC data output unit. [S29] When the search instruction is sent, the stored data section searches the NC data corresponding to the product code and
The date and time of execution is recorded as a time stamp while being sent to the data output unit.

FIG. 4 is a schematic block diagram of the system of the second embodiment of the present invention. The system includes an input / output unit 11, a learning control unit 12, an NC data creation unit 13, an accumulated data unit 14, and an NC.
The data output unit 15 is included. The input / output unit 11 is an interface with the user of this system, and is composed of an input device such as a keyboard and an output device such as a cathode ray tube. The user of this system gives an instruction to create NC data, The operation status of this system is displayed.

The learning control unit 12 determines whether to newly create NC data or cite accumulated data, and issues an execution instruction to the NC data creation unit 13 and the accumulated data unit 14. is there. The NC data creation unit 13 receives the execution instruction from the learning control unit 12, creates NC data, sends the NC data to the NC data output unit 15, and stores the NC data in the storage data unit 14 if necessary. The accumulated data unit 14 receives an execution instruction from the learning control unit 12, retrieves necessary NC data, and sends it to the NC data output unit 15.

5 and 6 show the third embodiment of the present invention. FIG. 5 is a flow chart showing the operation in the third embodiment of the present invention. In the figure, the numerical value following S indicates a step number. [S41] First, a product code of a standard product or a semi-standard product to be created is input as an NC data creation instruction to the input / output unit. The product code is a number that has a one-to-one correspondence with the product to be processed. [S42] Then, standard data is searched and prepared based on the input product code. [S43] Subsequently, when the option processing is present, the learning control unit receives the option code and adds the number of times of use to the number-of-uses by product code counter. The number of times of use is the first level of proficiency number (hereinafter, the first proficiency number n1)
If the number is smaller than the above, an NC data creation instruction corresponding to the option code is sent to the NC data creation unit, and S
Proceed to 49. When the number of times of use is the same as the number of times of first learning n1, an NC data creation instruction and an NC data registration instruction corresponding to the option code are sent to the NC data creation unit, and the process proceeds to S44. If the number of times of use is larger than the first number of learning times n1, an instruction to detect and output NC data corresponding to the product code is sent to the accumulated data portion, and the process proceeds to S50.

[S44] When the data registration instruction is sent together with the NC data creation instruction, the NC data corresponding to the product code is created, and the created NC data is registered in the accumulated data section. [S45] It is checked whether or not there is a vacant area in the accumulated data section, and if there is a vacant area, the procedure proceeds to S47, and if not, the procedure proceeds to S46. [S46] If the data to be registered does not fit in the area of the accumulated data portion, the data registered in the accumulated data are deleted in the order of oldest time stamps and registered in the empty area. In addition, for the deleted data, the number of times the usage counter of the learning control unit is set to zero at the same time.

[S47] The created NC data is registered in the empty area of the accumulated data section. [S48] In the NC data output section, the sent NC data is output to the outside in the form of a paper tape or an electric signal. [S49] If the instruction sent from the learning control unit is only the NC data creation instruction, the NC data creation unit creates NC data corresponding to the product code and sends it to the NC data output unit. [S50] The designated semi-standard data is retrieved and prepared. [S51] Further, the number of times of use is compared with the second level of proficiency number (hereinafter, second proficiency number n2, where n1 <n2).
If the number of times of use is less than the second learning frequency n2, the process proceeds to S48. If the number of times of use is more than the second learning frequency n2, an instruction to change the quasi-standard data to standard data is sent to the standard handling data registration unit, and S53 is performed. Proceed to. [S52] This is a quasi-standard product database of the data updated after the data is erased from S46 and the data is registered from S47.

[S53] It is checked whether or not there is a free area in the standard database. If there is a free area, the process proceeds to S55, and if not, the process proceeds to S54. [S54] If the data to be registered does not fit in the area of the standard database, the data registered in the standard database are deleted in order of oldest time stamps and registered in the empty area. Further, for the deleted data, the number of times of the usage counter of the learning control unit is also set to the first learning frequency n1 at the same time. [S55] The standard handling data registration unit adds the corresponding quasi-standard data to the standard data when receiving the data change instruction,
Create a new standard product code according to the rules and register it in the standard NC database. After that, this product is searched by the newly set standard product code and treated as a standard product. After that, when it is handled as a standard product and quoted, the execution date and time is stored as a time stamp. [S56] The standard product database is divided into a standard product data area and a standard handling data area. Data when semi-standard data is treated as standard is registered.

FIG. 6 is a schematic block diagram of the system of the third embodiment of the present invention. The system includes an input / output unit 21, a standard data search unit 22, a learning control unit 23, an NC data creation unit 25,
It comprises a stored data section 24, a standard handling data registration section 26, and an NC data output section 27. The input / output unit 21 is an interface with the user of the present system, and is composed of an input device such as a keyboard and an output device such as a cathode ray tube. The user of the present system gives an instruction to create NC data, The operation status of this system is displayed. The standard data search unit 22 is a unit that searches and quotes standard data of the instructed product and sends it to the NC data output unit 27. The learning control unit 23 newly creates the quasi-standard data, cites the stored quasi-standard data, or registers the processed data of the quasi-standard product in the standard product database so that it can be handled as standard data from the next time. This is a part for determining whether to set it, and for issuing a predetermined execution instruction to the NC data creation part 25, the accumulated data part 24, and the standard handling data registration part 26.

The NC data creating section 25 includes a learning control section 23.
In response to the execution instruction, the NC data is created, and if necessary, the NC data is stored in the storage data section 24. The standard handling data registration unit 26 receives an execution instruction from the learning control unit 23, adds the relevant quasi-standard data to the quasi-standard data, registers the quasi-standard data in the standard product database 29, and performs processing so that it can be handled as a standard product from the next time Is. The accumulated data unit 24 receives the execution instruction from the learning control unit 23, searches for the necessary NC data, and retrieves the NC data output unit 27.
To send to. The NC data output unit 27 is for outputting the sent NC data to the outside in the form of a paper tape, an electric signal, or the like.

FIG. 7 is a diagram showing the structure of the standard NC database. In the figure, 50 is a standard NC database, 51 is a fixed area for standard product data, and 52 is a variable area for standard product handling data. Standard product database 5
0 is divided into a standard product data area 51 and a standard handling data area 52. Processing data of all standard products is stored in the standard product data area 51, and product specifications are updated, new product types are added, and product types are deleted. Other than that, it will not be changed.
On the other hand, the standard handling data area 52 is an area for registering data when the semi-standard data is treated as standard. When the standard handling data to be registered does not fit in this area, the semi-standard data Similar to the case, the old time stamp is deleted to secure a free area and data is registered. At this time, the learning control unit sets the value of the use count counter of the quasi-standard data corresponding to the deleted data to the first learning count n1. By registering frequently used semi-standard products as standard products and searching and quoting them as standard products, it is possible to eliminate the process of searching the semi-standard database, and It is possible to create NC data quickly.

[0027]

As is apparent from the above description, in the NC data creating method of the present invention, the NC data for processing by the NC processing machine is converted into the standard data for processing the standard product and the standard product. On the other hand, it is composed of semi-standard data for adding selective processing and variable data for adding special processing to the standard product, and these data are combined and edited according to the division of data. The desired N
Since the C data is created, it is possible to effectively use the area of the storage device of the computer and quickly create the NC data when performing high-mix low-volume production.

Further, in the NC data creating method of the present invention,
When the number of times of use of the semi-standard data is less than or equal to a predetermined number, NC data is created each time, and when the number of times of use exceeds a predetermined number, the created NC data is stored in a storage device.
When there is no free space in the storage device, the oldest data of the quasi-standard data is erased and new data is stored, so that the learning function can quickly perform option processing that is frequently used.

Furthermore, in the NC data creating method of the present invention,
When the number of times the semi-standard data is used reaches a predetermined number or more, the semi-standard data is stored and registered as standard handling data in the standard data storage unit, so the process of searching the semi-standard database can be eliminated. It is possible to quickly create NC data of frequently used products.

[Brief description of drawings]

FIG. 1 is an operation flow chart showing a flow of NC data creation in a first embodiment of the present invention.

FIG. 2 is a block configuration diagram showing a configuration for executing the first embodiment of the present invention.

FIG. 3 is an operation flow chart showing a flow of NC data creation in the second embodiment of the present invention.

FIG. 4 is a block configuration diagram showing a configuration for executing a second embodiment of the present invention.

FIG. 5 is an operation flow chart showing the flow of NC data creation in the third embodiment of the present invention.

FIG. 6 is a block configuration diagram showing a configuration for executing a third embodiment of the present invention.

FIG. 7 is a structural diagram showing the structure of a standard NC database of the present invention.

FIG. 8 is an explanatory diagram illustrating the features of the product targeted by the present invention.

[Explanation of symbols]

 1, 11, 21 Input / output section 2 Semi-standard data 3 Standard data 4 Fluctuation data 5 Semi-variation CAM 6 Data editing section 7 Data output section 12, 23 Learning control section 13, 25 NC data creation section 14, 24 Accumulated data section 15 , 27 NC data output unit 22 Standard data search unit 26 Standard handling data registration unit 28 Semi-standard database 29 Standard database 50 Standard NC database 51 Standard product data area 52 Standard handling data area

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[Procedure amendment]

[Submission date] June 10, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0019

[Correction method] Change

[Correction content]

The learning control unit 12 determines whether to newly create NC data or cite accumulated data, and issues an execution instruction to the NC data creation unit 13 and the accumulated data unit 14. is there. The NC data creation unit 13 receives the execution instruction from the learning control unit 12, creates NC data, sends it to the NC data output unit 15, and registers the NC data in the accumulated data unit 14 if necessary. The accumulated data unit 14 receives an execution instruction from the learning control unit 12, retrieves necessary NC data, and sends it to the NC data output unit 15.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

5 and 6 show the third embodiment of the present invention. FIG. 5 is a flow chart showing the operation in the third embodiment of the present invention. In the figure, the numerical value following S indicates a step number. [S41] First, a product code of a standard product or a semi-standard product to be created is input as an NC data creation instruction to the input / output unit. The product code is a number that has a one-to-one correspondence with the product to be processed. [S42] Then, standard data is searched and prepared based on the input product code. [S43] Subsequently, when the option processing is present, the learning control unit receives the option code and adds the number of times of use to the number-of-use counter classified by product code. The number of times of use is the first level of proficiency number (hereinafter, the first proficiency number n1)
If the number is smaller than the above, an NC data creation instruction corresponding to the option code is sent to the NC data creation unit, and S
Proceed to 49. When the number of times of use is the same as the number of times of first learning n1, an NC data creation instruction and an NC data registration instruction corresponding to the option code are sent to the NC data creation unit, and the process proceeds to S44. If the number of times of use is greater than the first number of times of learning n1, the stored data section is treated as a product code .
Feed the search quoted indication of that NC data, and the process proceeds to S50.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

[S53] It is checked whether or not there is a free area in the standard database. If there is a free area, the process proceeds to S55, and if not, the process proceeds to S54. [S54] If the data to be registered does not fit in the area of the standard database, the standard treated data registered in the standard database are deleted in the order of oldest time stamps and registered in the empty area. Further, for the deleted data, the number of times of the usage counter of the learning control unit is also set to the first learning frequency n1 at the same time. [S55] The standard handling data registration unit adds the corresponding quasi-standard data to the standard data when receiving the data change instruction,
Create a new standard product code according to the rules and register it in the standard NC database. After that, this product is searched by the newly set standard product code and treated as a standard product. After that, when it is handled as a standard product and quoted, the execution date and time is stored as a time stamp. [S56] The standard product database is divided into a standard product data area and a standard handling data area. Standard handling data area
The data when the quasi-standard data is treated as standard is registered in the area.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

The NC data creating section 25 includes a learning control section 23.
In response to the execution instruction, the NC data is created, and if necessary, the NC data is stored in the storage data section 24. The standardized data registration unit 26 is a part that receives an execution instruction from the learning control unit 23, adds the corresponding quasi-standard data to the standard data, registers it in the standard product database 29, and performs processing so that it can be handled as a standard product from the next time. is there. The accumulated data unit 24 receives the execution instruction from the learning control unit 23, searches for the necessary NC data, and retrieves the NC data output unit 27.
To send to. The NC data output unit 27 is for outputting the sent NC data to the outside in the form of a paper tape, an electric signal, or the like.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sotsugu Obata 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd.

Claims (3)

[Claims] 1. NC data for machining by an NC machining machine, standard data for machining a standard product, semi-standard data for selectively machining the standard product, and the standard NC data creation that is characterized by creating variable NC data for adding special processing to an item and creating desired NC data by synthesizing and editing these data according to the classification of the data Method. 2. When the number of times of use of the semi-standard data is less than or equal to a predetermined number, NC data is created each time, and when the number of times of use exceeds a predetermined number, the created NC data is stored in a storage device. 2. The NC data creating method according to claim 1, wherein when the storage device has no free area, the oldest semi-standard data is erased and new data is stored. 3. The NC data creation according to claim 1, wherein when the number of times the semi-standard data is used reaches a predetermined number or more, the semi-standard data is stored and registered in the standard data storage unit as standard handling data. Method.