JP2003122413A - Control data structure of nc data editing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the man hours required to create an NC program by enhancing the handleability of NC data during editing. SOLUTION: The NC data created by a host NC data creating device using a suitable control data structure for an NC data editing device are managed in a unified manner to enhance handleability for the editing of NC data, and data that vary depending on the facilities of a host machining system and data that can be shared by the facilities are separated from each other to achieve effective use of the data and reduce the man hours required to create the data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control data structure of an NC data editing device. In particular, the present invention relates to a control data structure of an NC data editing device for processing a mold die.

[0002]

2. Description of the Related Art Recently, two-dimensional and three-dimensional CAD / CA.
By using the M system, NC program creation is automatically created from two-dimensional data or three-dimensional model,
Although the NC program creation efficiency is being improved, in order to complete the processing data, it is necessary to define and process the processing order of a plurality of NC programs created by the above NC program creating device and the relation of tools to be used. It is necessary to perform NC data editing work that performs various measures such as creating a business form and estimating the processing time for inputting to the processing machine.

The structure of control data of a conventional NC data editing device will be described. As shown in FIG. 6, the control data of the conventional NC data editing device is composed only of the actual data part of the NC program. Therefore, NC for each tool used
The program data will be scattered. These multiple N
It is necessary for the operator to manage the NC data editing work that performs various actions such as defining the machining sequence of the C program and the relation of the tools used, creating a form for machining, estimating the machining time, and performing various actions for inputting to the machining machine. Depends on the host system or NC
In order to operate the data editing device, a mechanism for performing a separate data management work is required.

[0004]

However, when the above data structure is used, there are the following problems.

(1) When operating the current NC data editing device control data in a higher-level NC program creation system or equipment, a data management file or the like is required in addition to the data, so the system configuration and processing are It gets complicated. In addition, when the person in charge manages and operates it, it must be managed by using a memo on the list or a management ledger. Moreover, the reliability of the management contents cannot be guaranteed due to manual errors such as memos and transcription errors on the ledger.

(2) The problem of (1) is that when different NC program creating devices are operated in a plurality of combinations,
Complex management is required due to differences in functions between C program creation devices.

(3) When supplying the control data of the current NC data editing device to a lower processing system, if the NC data format is different for each processing system, the upper NC program creation system side considers the processing system in advance. It is necessary to create data by using the above, and when the machining system is changed due to the change of the production schedule, it is necessary to redo the work from the upper NC program creating system.

(4) It is impossible to optimize machining by reorganizing processes such as continuous machining with the same tool in consideration of a plurality of combinations of different NC program creating devices, and to edit NC program considering the life time of the tool. .

(5) DN in downstream NC machining in a plurality of combinations of different NC program creation devices
It is necessary to prepare an NC data supply method for the C system and each processing device for each different NC program creation device. For this reason, data handling work is generated according to each NC data supply method.

(6) When reassembling the NC program for changing the shape of the product, repetitive waste occurs in the data handling work when re-editing with another NC program that has not changed.

In view of the above-mentioned conventional problems, it is an object of the present invention to provide a control data structure of an NC data editing device which can reduce the number of data creation steps and improve the data handling property.

[0012]

According to the control data structure of the NC data editing apparatus of the present invention, in the control data structure for operating the NC data editing apparatus, the control data is classified according to purpose and function in item units and described. Characterize. Further, it is preferably a data structure in which management information required for data management and system management is incorporated as a data unit in control data and handled in a unified manner.

(Operation) According to the configuration of the present invention, by classifying the control data in units of items according to the purpose and function of each, data that can be shared between the upper NC program creating devices for each of these items. Data can be sorted into lower-level machining system-dependent data, eliminating the need to create an NC program from scratch for each combination of NC program creation device and machining system, reducing NC program creation man-hours, NC program editing data handling And the handling of data in the processing system can be improved. Further, by directly writing the management information in the data head part, for example, it becomes easy to manage in data management and system management.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A control data structure of an NC data editing apparatus according to an embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a data structure in which the control data of the NC data editing device is grouped by purpose and function, and its data items. That is, each data item is roughly classified into four according to purpose and function. That is, (a) an index part indicating which surface of which part is to be processed in which order, and the like,
(B) a management information section for managing NC data for each tool used, (c) a tool information section showing information on the shape of the tool itself, and (d) an actual data group of the NC program for each tool of the NC program. Grouped.

Of these data items, (a) is data that is input for each part to be machined, and (b) is the start of machining when NC data corresponding to each tool is used in each NC machining system. It is the control information data at the end,
(C) is the shape data of the tool used during machining in each NC machining system, and (d) is the actual data of the NC program used during machining in each NC machining system. Further, at the head of each data, there is provided a header part describing management information of the data.

Further, the internal representation in each of the above-mentioned data is also described as a data unit for each function to distinguish between processing system dependent and independent, thus realizing a general-purpose data structure.

The detailed structure of each data will be described below with reference to FIGS.

First, the data structure of the index part is shown in FIG.
The description is given with an ID for identification, which indicates that it is an index part, at the beginning, followed by the information necessary for the administrator to manage and operate. Items such as program name, product name,
Part name, model name indicating the target machining system, machine name,
The creation date, the modification date, the machining time of the entire NC program data, the number of machining steps, the coordinate system, the work measurement control information, etc. are described.

The data structure of the management information part will be described with reference to FIG. 3. The process number that serves as a header part, the name of the tool used for each tool used, and the coordinates of the machining start position that serves as control information at the start and end of machining. (X, Y, Z), spindle speed,
Described are a start pointer, an end pointer of the actual data of the NC program, a machining time for each tool, a machining cancellation command, a machining restart command, and the like, which are control commands related to the tool replacement operation when the tool life is reached.

The data structure of the tool information section will be described with reference to FIG. 4. The tool diameter, blade length, shank length, taper angle, and tool tip of the tool used for the tool described in the management information section. Describe the tool shape such as the tip shape of the tool such as whether is a square or a ball. The tool information section can describe the number of types of tools used for machining. By using the tool information section, it is possible to transfer necessary tool information to the processing data without using a tool information database or the like in the lower processing system. As a result, the latest tool information can be obtained without the need to manage the consistency of tool data between host systems and the maintenance of data changes, which occurs when the lower-level machining system has a tool information database. It becomes possible to operate the processing system based on it.

As shown in FIG. 5, the data structure of the NC program part is described as "* NC DATA" at the beginning of the NC program part as an ID part indicating that it is NC data, and is followed by step 1 in the processing order. From the to the final step n, the NC program actual data for each tool used is described. As the actual data, because of the NC movement command, the NC that exceeds the life time of the tool in the upper NC program creation device
Even when a program is created, it is possible to control machining within the life of the tool used without changing the operation of the created NC program.

As described above, since the control data is classified into item units according to the purpose and function of each, and is divided into data that can be shared between processing systems and data that depends on processing systems, it is shared between processing systems. Since it is not necessary to create data that can be created from scratch, data creation is easy and data handling is improved.

Further, data created by different upper NC program creation systems such as two-dimensional and three-dimensional CAD / CAM and a plurality of NC programs created for machining the same part are unified by the data structure according to the present invention. Data management such as management, organization of machining order, and continuous machining of the same tool by rearranging machining order is possible, reducing complicated handling work for optimization at NC program creation and realizing optimum machining efficiency. It is possible to supply data to the lower processing system, which dramatically improves productivity.

[0025]

As described above, according to the present invention, the control data of the NC program editing procedure is classified in item units according to the purpose and function of each item, and the data that can be shared by the machining system for each item. And data dependent on the machining system, the NC program editing work and the data handling between the machining systems are improved, and the number of data creation steps can be reduced. Further, by describing data management information necessary for management and operation inside the data, reliability of information and easy management can be achieved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a control data structure of an NC data editing device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a detailed structure of each data.

FIG. 3 is an explanatory diagram of a detailed structure of each data.

FIG. 4 is an explanatory diagram of a detailed structure of each data.

FIG. 5 is an explanatory diagram of a detailed structure of each data.

FIG. 6 is an explanatory diagram of an embodiment of the present invention.

FIG. 7 is an explanatory diagram of a control data structure of the present invention.

[Explanation of symbols]

a Index part b Management Information Department c Tool information section d NC Program Department

Claims (4)

[Claims] 1. A control data structure of an NC data editing device, characterized in that, in controlling the NC data editing device, control data is classified by function according to purpose in item units and described separately for each classification. 2. The control data structure of the NC data editing apparatus according to claim 1, wherein in the NC data editing, management information required for data management and system management is incorporated in the control data. 3. The control data structure of an NC data editing device according to claim 1, wherein NC data output from a host system composed of a plurality of types of NC program creating devices is centrally managed. 4. The control data structure of the NC data editing device according to claim 1, wherein NC data supplied to a downstream system including a plurality of types of NC processing devices is centrally managed.