JP2840129B2 - Method of creating numerical control data for contour machining - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a contour control numerical control data generating method for generating numerical control data for a processing machine that processes along a contour of a desired processing shape.

[Prior art]

2. Description of the Related Art Conventionally, there has been provided a processing machine such as a wire electric discharge machine or a laser processing machine that performs processing along a contour of a desired processing shape. Numerical control data for this type of processing machine is set by defining the position of the tool so as to follow the contour of the processing shape. That is, the numerical control data is expressed as a permutation of the position data.

[Problems to be solved by the invention]

As described above, expressing the trajectory of the movement of the tool as a permutation of the position data is a very complicated operation, and there is a problem that it takes much time to create the numerical control data. In addition, in order to create numerical control data, it is necessary to learn a language dedicated to a processing machine such as a numerical control language or a part program language. Cost is high. The present invention is aimed at solving the above problems,
An object of the present invention is to provide a method of creating numerical control data for contour processing, which facilitates the creation of numerical control data required for contour processing, and significantly reduces the creation time and cost.

[Means for Solving the Problems]

According to the present invention, in order to achieve the above object, in a method of creating numerical control data for a processing machine that performs processing along a contour of a desired processing shape, a plurality of types of contours of the processing shape are set in advance. It is expressed by a combination of basic shapes, and the processing start position, the type, position, and dimensions of each basic shape are set as parameters, and the outer contour line, inner contour line,
An input code is created by combining parameters using sum, difference, and product symbols indicating the contours of the common part, respectively. When the input code is input from the input unit, the input code is registered in the basic shape registration unit. The machining shape creation unit reproduces the machining shape from the input code with reference to the basic shape, translates the reproduced machining shape in the numerical control data creation unit, and automatically generates numerical control data for the processing machine It is.

[Action]

According to the above configuration, if the contour line of the processing shape is defined as a combination of the basic shapes, the numerical control data for the processing machine is automatically generated, so that the creator of the numerical control data sets the processing shape to the basic shape. Only the operation of decomposing and instructing the parameters and the combination is performed, and the amount of work is significantly reduced as compared with the case where the permutation of the position data is given as in the related art. Further, since there is no need to learn a language dedicated to the processing machine, the cost required to create the numerical control data is reduced. In particular, since the input code represents the machining start position and the basic shape by parameters and is expressed in the form of a series of expressions combining the basic shape with symbols, a complicated process such as interactive input is unnecessary and the result is No graphic display is required, and numerical control data required for contour processing can be created with an inexpensive device having an input unit, a basic shape registration unit, a machining shape creation unit, and a numerical control creation unit. .

【Example】

The creation process of the numerical control data in the present invention is the first
Shown in the figure. First, a desired processing shape is expressed as a combination of basic shapes registered in advance. A plurality of types, such as a circle, a rectangle, and a triangle, are defined as the basic shapes, and the desired processed shape is decomposed so as to be a combination of these basic shapes. Next, the types, positions, and dimensions of the basic shapes constituting the processed shape are set as parameters. For example, if it is a rectangle, you can set the type as REC, the center position as X, Y, the vertical and horizontal dimensions as H, V, etc.The basic shape in the format REC, X, Y, H, V May be defined. FIG. 2 shows a definition example of parameters of the basic shape. 2A shows a circle, FIG. 2B shows a rectangle, FIG. 2C shows a rectangle in which each vertex is round, and FIG. 2D shows an equilateral triangle. The types of basic figures are indicated by CIR, REC, REC, and TRI, respectively, and the center position is indicated by X and Y. When the parameters of the basic shape are set, a combination method is instructed. The combination of the basic shapes is represented by an instruction symbol. For example, to select the outermost contour line of a figure with basic shapes superimposed,
When selecting the innermost contour line-, when selecting the common portion contour line where the basic shape is superimposed *
May be used. FIG. 3 shows an example of a correspondence relationship between an input code obtained by combining parameters using these symbols and a state of superimposition of a basic shape, and a machining shape defined by the input code. The processing shape is defined by the input code created as described above. Here, in order to confirm whether or not the input code corresponds to a desired processing shape, a contour line of the processing shape defined by the input code is automatically created. Here, if the input code does not correspond to the desired machining shape, the input code may be corrected. Next, numerical control data is automatically generated based on the contour line of the processing shape defined by the input code, and a paper tape or an electric motor is used so that it can be read by a processing machine such as a wire electric discharge machine or a laser processing machine. The numerical control data is output in the form of a signal or the like. When the creator of the numerical control data prepares the input data, the numerical value may be configured as shown in FIG. That is, the input data created as described above is
The machining shape defined by the input data is reproduced by the machining shape creating unit 2. Machining shape creation unit 2
Refers to the basic shape registered in the basic shape registration unit 5 and reproduces the machining shape defined by the parameters and symbols of the input data. At this stage, if the desired machining shape has not been obtained, the input data 1 is corrected. Thereafter, the numerical control data is automatically created in the numerical control data creation unit 3 based on the machining shape. That is, a permutation of position data is generated corresponding to the processed shape reproduced by the processed shape creating unit 2. The numerical control data thus obtained is output to the outside through the output unit 4. The basic shape registered in the basic shape registration unit 5 described above can be changed by an input from the input unit 1, and a user can define a required shape as a basic shape using a macro language. When performing the contour processing of the processing shape A as shown in FIG. 5 (a) by using the above-described method, for example, FIG. 5 (b)
After decomposing into basic shapes such as circles, rectangles, and triangles, input data is created as in the following equation. Here, PT, X1, and Y1 are parameters indicating the machining start position, and the other parameters and symbols are the same as those defined in FIG. 2 and FIG. Further, the circled numbers of ~ correspond to the circled numbers of Fig. 5 (b). When the numerical control data is created based on the input data defined in this way, a permutation of the position data for moving the tool is automatically created as shown by an arrow in FIG. 5 (c).

【The invention's effect】

As described above, the present invention relates to a method of creating numerical control data for a processing machine that performs processing along a contour of a desired processing shape, in which a combination of a plurality of types of basic shapes in which the contour of the processing shape is set in advance. Expressed by
The sum and difference that set the processing start position, the type, position, and dimensions of each basic shape as parameters, and indicate the outer contour, inner contour, and common part contour of the figure on which the basic shape is superimposed. When an input code is created by combining parameters using a product symbol and the input code is input from an input unit, a machining shape creation unit inputs by referring to the basic shape registered in the basic shape registration unit. It reproduces the machining shape from the code, translates the reproduced machining shape in the numerical control data creation unit, and automatically generates numerical control data for the processing machine, using the contour of the machining shape as a combination of the basic shape If defined, numerical control data for the processing machine is automatically generated,
The creator of the numerical control data merely performs the work of decomposing the processed shape into the basic shape and instructing the parameters and the combination method. There is an advantage that it is reduced. Further, since it is not necessary to learn a language dedicated to the processing machine, there is an effect that the cost required for creating the numerical control data is reduced. In particular, the input code is
The machining start position and basic shape are represented by parameters, and the basic shape is expressed in the form of a series of equations that are symbolically combined, eliminating the need for complicated processes such as interactive input and consequently no graphic display Thus, numerical control data required for contour processing can be created by an inexpensive device having an input unit, a basic shape registration unit, a machining shape creation unit, and a numerical control creation unit.

[Brief description of the drawings]

FIG. 1 is a flow chart showing the flow of the present invention, FIG. 2 is an explanatory diagram showing an example of defining a basic shape in the above, FIG. 3 is an explanatory diagram showing an example of a definition of input data in the above, and FIG. FIG. 5 is a block diagram of an apparatus to be used, and FIG. 5 is an explanatory view showing the embodiment. 1 ... input unit, 2 ... processed shape creation unit, 3 ... numerical control data creation unit, 4 ... output unit, 5 ... basic shape registration unit.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G05B 19/4097

Claims (1)

(57) [Claims] In a method for creating numerical control data for a processing machine for processing along a contour line of a desired machining shape, the contour line of the machining shape is expressed by a combination of a plurality of preset basic shapes. The processing start position, the type, position, and dimensions of each basic shape are set as parameters, and the outer contour, the inner contour, and the common part contour of the figure in which the basic shapes are superimposed, respectively, An input code is created by combining parameters using the difference and product symbols, and when the input code is input from the input unit, the processing shape creation unit refers to the basic shape registered in the basic shape registration unit. The machined shape is reproduced from the input code, and the reproduced machined shape is translated by the numerical control data creation unit to automatically generate numerical control data for the processing machine. Numerical control data generating method for contouring characterized and.