JPH0775815B2 - Control data creation device for electric discharge machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a control data creation device for an electric discharge machine, which automatically creates control data including optimum electrical machining conditions for an electric discharge machine of any model. It is used for various purposes.

(Background Art) The numerical control type electric discharge machine has advanced power supply performance and control performance day by day, and the manufacturing process of numerical control data including electrical machining conditions greatly differs depending on the manufacturer depending on the model. Therefore, it is desired to develop a device that can easily and quickly create numerical control data for any model of any manufacturer. However, looking at the current situation, in the control data creation process of the electric discharge machine, the electric machining condition is determined based on the knowledge and experience of the operator of the electric discharge machine, and the electric machining condition is controlled by the numerical controller or the power supply device. I am typing directly into
A device for automatically determining electromachining condition data from machining data is disclosed in, for example, Japanese Patent Laid-Open No. 51-58793 or Japanese Patent Laid-Open No. 54793.
As can be seen in Japanese Patent Laid-Open No. 131199, these can only create data for a specific electric discharge machine, and are not devices that can create data for any model of any manufacturer. Moreover, it is not a device that can output the electrical machining conditions automatically determined for each model by linking with data such as machining position coordinates necessary for controlling the electric discharge machine, and there has been no such device in the past.

Further, in Japanese Patent Publication No. 53-34359, a person who has a certain degree of expertise in electrical discharge machining for a single model,
A device has been proposed for selecting a card on which electromachining conditions have been set, while considering the electrode wear ratio and electrode-workpiece combination.However, in such a device, the electromachining conditions are punched in the card. Therefore, when a new model emerges, it cannot support at all, and it cannot support the model update of the electric discharge machine that is advancing day by day, and can be used only for a single model. Also, because the selected card only has electrical processing conditions set,
Other data required for electrical discharge machining must be set separately. Therefore, it is not possible to create a card that corresponds to a product one-on-one, and an operator having specialized knowledge needs to be involved again when the same product is produced next time. This point is related to JP-A-51-58793.
The same is true for the device disclosed in the publication, and by simply outputting the automatically determined electromachining conditions to a tape or a card, it is necessary to separately set data such as machining position coordinates necessary for controlling the electric discharge machine, which saves labor. Is desired.

In the field of special wire-cut electric discharge machines, 2
The data structure is relatively simple because it is only processed in three dimensions. However, since the normal die-sinking EDM machine performs three-dimensional processing, the data structure is very complicated. Then, for any model, complex electromachining conditions are automatically determined based on machining content data that anyone can easily input, and the determined electromachining conditions can be used to control other EDM machines. There was no device that could output data linked to it.

(Object of the Invention) The present invention has been made in view of the above points, and an object of the present invention is to provide an apparatus capable of automatically determining electromachining conditions for an electric discharge machine of an arbitrary model. Moreover, the control data of the electric discharge machine including the optimum electric machining conditions can be obtained by implementing the automatic determination device of the electric machining conditions as a system integrally connected with the control data creation device of the electric discharge machine. It's about making it quick for anyone to create.

DISCLOSURE OF THE INVENTION In the electric discharge machine control data creation device according to the present invention, as shown in FIG. 1, for each of a plurality of electric discharge machines, the data of the electric machining conditions for each machining method is stored. An electrical machining condition data storage unit 1 that stores data so that it can be registered, changed, and deleted from the outside with a data structure that can be searched by designating machining tolerance, electrode reduction amount, and surface roughness. And, as the machining content to be machined by the electric discharge machine, at least the model name of the electric discharge machine, the machining method, the machining tolerance, the electrode reduction amount, the surface roughness, and the machining position coordinate data are entered. Input unit 2 and processing content input unit 2
Of the machining details entered in, the model name of the electric discharge machine,
A data retrieval output unit that retrieves the electromachining condition data storage unit 1 based on the machining method, machining tolerance, electrode reduction amount, and surface roughness, and outputs the data of the electromachining condition suitable for the machining content. 3 and the machining content data input from the machining content input unit 2 are edited and output as the control data of the electric discharge machine together with the electrical machining condition data retrieved and output by the data retrieval output unit 3 And part 4.

According to the present invention, as described above, by specifying the machining tolerance, the electrode reduction amount, and the surface roughness of the electric machining condition data for each machining method for each of the plurality of electric discharge machines. An electric machining condition data storage unit 1 for storing information that can be registered, changed, and deleted from the outside with a data structure that can be searched is provided, and the electric discharge of the machining contents input in the machining contents input unit 2 is performed. Based on the model name of the processing machine, the processing method, the processing tolerance, the electrode reduction amount, and the surface roughness, the data search output section 3 searches the electrical processing condition data storage section 1 to suit the processing content. Since the data of the electric machining conditions is output, the optimum electric machining conditions can be determined with respect to the electric discharge machine of any model, and the control data creating unit 4 allows the machining content input unit 2 to operate. Of the input machining position coordinates Since the data of the machining content including the data is edited and output as the control data of the electric discharge machine together with the data of the electric machining condition retrieved and output by the data retrieval output unit 3, the electric machining condition is The control data including the optimum electromachining conditions and the machining position coordinate data is automatically created without manual input.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 2 is a schematic configuration diagram of a control data creation device 5 of an electric discharge machine according to an embodiment of the present invention. The control data creating device 5 includes a display unit 6 for enabling interactive input, a machining shape processing processor 7 functioning as a main processor for creating control data, and an electrical machining which is a characteristic part of the present invention. It is composed of a condition data processor 10 and a post processor 8 for converting control data into a final character of numerical control data. The output of the control data creation device 5 is recorded on the NC tape 9 and input to the NC electric discharge machine 11.

The outline of the processing in the apparatus of FIG. 2 will be described based on the flowchart of FIG. First, in step S ₁ , the model name of the NC electric discharge machine 11 input by the creator of the numerical control data, the electric discharge machining method, the electrode reduction amount, the surface roughness, the machining position coordinates and the like are read. In step S _2, the correctness check of the input data is performed, checklist input data
L ₁ is created. In step S _3, the number of electrodes used for electrical discharge machining, and, the electrode use order is determined. In step S ₄ , various data files F ₁ are read,
In step S ₅ , the processing conditions are edited and decided. further,
In step S ₆ , a machining instruction book I ₁ for communicating the machining contents such as machining conditions to the operator of the NC electric discharge machine 11 is created. Further, in step S ₇ , CL data for controlling the movement of the electrodes and the like is created. The processed data as described above, in step S _8, and converted into numerical control data by the host processor 8 outputs the NC tape 9 which records the numerical control data, process sheet P ₁ which describes the working process Is output.

The electromachining condition data processor 10 has a built-in electromachining condition data storage unit 1, and by designating the model name of the electric discharge machine, the tolerance during machining, the electrode reduction amount, the surface roughness, and the machining method, It is possible to retrieve electrical processing condition data. FIG. 4 is an explanatory diagram showing a data structure in the electric machining condition data storage unit 1 for each machining method. The model name storage unit stores the model name of the electric discharge machine 11, for example, model A, model B, .... Further, the tolerance storage unit stores the tolerances required for machining, for example, average, precision, ...
Is remembered as. The electrode reduction amount and surface roughness storage unit stores the number of electrical machining conditions used, examples of electrical conditions, machining allowance data, and the like according to various combinations of the electrode reduction amount and the surface roughness. Of these, for the electrical condition string, the electrical condition code is, for example, C000, C001, C002, C00.
It is stored as a code string such as 3, ... The data for converting the code of each electrical condition into the actual electrical condition is stored in the storage unit of the electrical condition data, for example, the code C000 is the current value Ip corresponding to the code, the energization time τon, the non- It is stored in a data format that can be converted into specific electrical conditions such as energization time τoff, .... The electromachining condition data processor 10 searches the data stored in the electromachining condition data storage unit 1 on the basis of the input data to obtain the current value Ip, the energization time τon,
The electrical processing conditions including the non-energization time τ off, ... Are output. The output data is converted into numerical control data of electric processing conditions by the processing shape processing processor 7 and the post processor 8 and output on the NC tape 9 together with the processing position coordinate data and the like.

In addition, the electric machining condition data storage unit 1 can correspond to the NC electric discharge machine 11 of any model of any manufacturer, that is, any NC electric discharge machine by the control data creating device 5.
In order to be able to create 11 numerical control data as well, it has a structure that data can be easily registered, updated, and deleted from the outside. Specifically, a readable / writable storage device such as a magnetic drum is used. Is configured. Therefore, it goes without saying that, for example, it is possible to easily cope with a case where the combination of the electrode material and the workpiece is desired to be changed.

(Effect of the Invention) As described above, according to the present invention, since the electric machining conditions of an arbitrary model are stored in advance, the machining including the conditions for searching the electric machining conditions and the data of the machining position coordinates. By inputting the content, the optimum electromachining conditions can be automatically determined, and the automatically determined electromachining conditions are edited and output as control data for the electric discharge machine together with data such as machining position coordinates. As a result, it is possible to significantly reduce the control data creation time, eliminate variations in control data machining conditions, and especially optimize electrical machining conditions, enabling highly accurate and highly efficient electrical discharge machining. Therefore, it is possible to manufacture high quality products at low cost. Further, since the operator of the electric discharge machine can omit the input work of the electric machining conditions, there is an effect that the actual operation rate of the electric discharge machine can be improved. Furthermore, the electromachining condition data storage unit is
The data structure of electrical machining conditions for each machining method can be retrieved from the outside by specifying machining tolerance, electrode reduction amount, and surface roughness for each electric discharge machine. Since it is stored so that it can be registered, changed, and deleted, it is possible to easily and quickly respond to the model updates of electric discharge machines that are advancing day by day, and the selection of a program card attached to a single model. Compared to the position,
There is also an advantage that when the new model is introduced, the control data creation device used until then is not wasted.

[Brief description of drawings]

FIG. 1 is a claim correspondence diagram showing the basic configuration of the present invention, and FIG.
FIG. 3 is a schematic configuration diagram of a control data generating device for an electric discharge machine according to an embodiment of the present invention, FIG. 3 is a flowchart showing an outline of processing in the same device, and FIG. 4 is electrical machining condition data in the same device. It is explanatory drawing which shows an example of the data structure of a memory | storage part. 1 is an electric processing condition data storage section, 2 is a processing content input section,
Reference numeral 3 is a data search output unit, and 4 is a control data creation unit.

Claims (1)

[Claims] 1. A data structure capable of retrieving electrical machining condition data for each of a plurality of electric discharge machines by designating machining tolerance, electrode reduction amount, and surface roughness. In the electrical machining condition data storage section that stores information so that it can be registered, changed, and deleted from the outside, and at least the model name of the electrical discharge machine, machining method, machining Tolerance, electrode reduction amount, surface roughness, and machining position coordinate data, and the machining contents input in the machining contents input unit A method, a machining tolerance, an electrode reduction amount, and a surface roughness, and a data search output unit that searches the electromachining condition data storage unit and outputs data of the electromachining condition suitable for the machining content. Input from the processing content input section And a control data creation unit for editing and outputting the machining content data, together with the electrical machining condition data retrieved and output by the data retrieval output unit, as control data for the electrical discharge machine. Control data generator.