JPH0736524A - Cad/cam device - Google Patents

Abstract

PURPOSE:To shorten the working time of a CAD/CAM device and also to prevent the artificial mistakes by recognizing automatically the same shapes included in a drawing and then defining by the same shapes. CONSTITUTION:When a machining shape defining means 1 defines a machining shape based on the supplied shape data, a machining shape recognizing means 3 having a same shape recognizing means recognizes the same shapes included in a machining drawing. Then a machining start point setting means 7 having a same machining defining means and a machining start element deciding means 8 define the machining so that the exactly same positional relation is secured to the same shapes between the machining start point and the machining start element. A machining condition adding means 9 having the same machining defining means adds the same machining information to the same shapes. Thus the same machining is defined to the same shapes in an automatic defining mode and an exactly same NC program can be acquired. As a result, the same shapes are manually confirmed out of the drawing and the trouble and the time needed for definition of the same machining can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD / CAM device, and more particularly to a CAD / CAM device that supports creation of machining NC data for a wire cut electric discharge machine.

[0002]

2. Description of the Related Art FIG. 13 is a diagram showing a general structure of a CAD / CAM device, and 21 is a method of processing shape data defined from creation of shape data based on various input data and processing conditions. CP that creates and creates NC data
U and 22 are memories for storing various input data, 2
3 is a printer that prints a screen, 24 is a CRT that displays defined shape data, processing paths, processing conditions, input request messages, etc. on the screen, and 25 is a keyboard that inputs various data such as shape data and processing conditions , 26 are CRT
A mouse for selecting figures and menus displayed on the screen 24, an auxiliary storage device 27 for storing defined shape data, or for reading out the stored shape data,
28 is a plotter for outputting the created drawing on a sheet. All of the above devices are connected via a bus 29.

Next, a conventional configuration for creating a shape to be processed by such a CAD / CAM device will be described. As shown in FIG. 14, when the machining shape defining means 31 inputs various data regarding the machining shape from the keyboard 25 or the mouse 26, the data is transferred to the CPU 21 via the bus 29, and after performing processing based on the operator's instruction. ,
Shape data of points, lines, circles, etc., data of dimension lines, notes, etc. are created and displayed on the CRT 24, and are stored in the memory 22 by the shape data storage means 32. CRT
While confirming the processing result from the display contents of 24, input of shape data is repeated to create a shape to be processed. Alternatively, the shape data created by another CAD device is read from the auxiliary storage device 27. The result is, for example, FIG. 18-a.
The processed shape is as follows.

Next, the machining shape recognizing means 33 recognizes whether the created shape is a shape that can be machined continuously into a closed shape, and the machining method determination condition setting means 34 enlarges the shape (FIG. 19-a). ), Or cut-off processing (Fig. 19)
As a condition for determining which method of (b) is to be used for processing, the shape area for performing the enlarged processing is set, and the processing step registration means 35 registers a plurality of processing steps as shown in Table 1.
Among the plurality of steps registered by the processing step registration means 35 by the processing method corresponding step determination means 36, a step during expansion processing (Table 2-a) and a step during cut-off processing (Table 2-b) as shown in Table 2. ) Is selected.

[Table 1]

[Table 2]

The processing start point creating means 37 is shown in FIG.
This will be described using the flowchart of FIG. Step (S4
In 1), the optimum position for starting machining is determined from the machining shape. Further, a point element is created at the position obtained in step (S41) as a processing start point in step (S42). Further, in step (S43), information that is the processing start point is added to the point element created in step (S42).

The machining start element determining means 38 will be described with reference to the flowchart of FIG. Step (S
If it is determined in 51) that the area of the machining shape is equal to or smaller than the maximum area set by the machining method determination condition setting unit 34 as the enlarging machining, the enlarging step is performed (S52).
An element located far from the machining start point is obtained with (FIG. 20-a). If it is determined in step (S51) that the cutting operation is other than that, in step (S53), an element located near the processing start point is obtained (FIG. 20-
b). Also, in step (S54), step (S52)
Alternatively, if it is determined that the element obtained in step (S53) can be processed normally from the processing start point, information that is the processing start element is added to the element in step (S57). If it is determined otherwise in step (S54), another adjacent element is obtained in step (S55). If there is an element that has not been determined in step (S56), step (S54) and subsequent steps are repeated.

The processing condition adding means 39 is shown in FIG.
This will be described with reference to the flowchart of. Step (S6
If it is determined in 1) that the area is not larger than the maximum area set by the machining method determination condition setting means 34, the enlargement process determined by the machining method corresponding process determination means 36 in step (S62). Obtain information (Table 2-a). If it is determined otherwise in step (S61), the cut-off process process information (Table 2-b) determined by the process method corresponding process determining means 36 is obtained in step (S63). In step (S64), the process information obtained in step (S62) or step (S63) is added to the processing start element.

The machining order changing means 40 changes the machining order so that the machining path becomes the shortest in order to shorten the machining time. Further, regarding the drill hole defining means 41, regarding the machining shape defining the drill hole, the operator adds information on the drill hole shape one by one to the machining start point element created by the machining start point creating means 37. . For example, FIG. 18-b shows a shape obtained by processing and defining FIG. 18-a in this way.

[0009]

Conventional CAD / CAM
Since the device is configured as described above, the processed shape is defined as a drawing, and if the same shape exists in the drawing,
If the same machining definition is applied to the shape, the same N
A C program can be created, but when automatically defining a machining, the same shape cannot be recognized, and another NC program may be created despite the same shape. . Even when the machining definition is manually performed, a person who is different from the drawing creator often performs the machining definition for the drawing, and in that case, it takes time and effort to confirm that the drawings have the same shape. there were. Furthermore, when drilling a hole through which a wire is to be drilled, it is necessary to manually create a circular shape for each drilled shape when defining the shape, which is troublesome and time consuming.
In addition, in order to open a hole for drilling so that the machining efficiency is maximized, it is necessary to manually calculate for each machining shape, which takes time and causes a human error.

The present invention has been made in order to solve the above-mentioned problems, and since the confirmation of the same shape in the drawings and the definition of the machining having the same shape are performed without human intervention, a great deal of labor is required. The time can be shortened, and exactly the same machining NC program can be easily created for the same shape. Also, because the circular shape for drilling when drilling a hole to pass the wire is performed at the same time when defining the machining,
The manual work is reduced, and the labor and time can be shortened.
Further, it is another object of the present invention to provide a CAD / CAM device capable of displaying the shape of a hole so that the hole can be most efficiently drilled when a hole through which a wire is to be drilled and reducing the time of the subsequent process.

[0011]

CAD / CA of the present invention
The M device recognizes a machining shape defining unit that defines a machining shape based on the inputted shape data, and the same shape that recognizes whether the defined shape can be machined and that recognizes the same shape from a plurality of machining shapes. A machining shape recognition means having a recognition means, and a position to start machining based on the machining shape are obtained,
In the case of the same shape, the machining start point creating means having the same machining definition means for determining the machining start point so that the positional relationship between the machining start point and the machining shape is the same, and the element for starting machining depending on the machining shape And the same shape,
The machining start element determining means having the same machining definition means for determining the machining start element so that the positional relationship between the machining start element and the machining shape is the same, and the machining method is determined by the machining shape, Accordingly, a machining step is added to the machining start element, and the same shape is provided with machining condition adding means having the same machining definition means for adding the same machining information to the machining start element.

Further, a machining shape defining means for defining a machining shape by the inputted shape data, a machining shape recognizing means for recognizing whether or not the defined shape can be machined, and a machining start for starting machining by the machining shape. Machining start point creating means for deciding points, drill hole information setting means for setting drill hole information for wire insertion, and a drill hole of the size set by the drill hole information setting means according to the machining start point and machining shape. A drill hole creation defining means to be created, a machining start element determining means for deciding an element to be machined according to the machining shape, a machining method is decided according to the machining shape, and a machining step is set as a machining start element according to the decided machining method. And a processing condition adding means to be added.

Further, it is set by the drill hole information setting means having the drill hole information setting means for each processing method capable of setting the drill hole information for wire insertion for each processing method, and the drill hole information setting means for each processing method. And a drill hole creation defining unit having a drill hole creating unit for each working method for creating a drill hole based on the drill hole information and the working method.

[0014]

In the CAD / CAM apparatus according to the present invention, the machining shape recognizing means having the same shape recognizing means recognizes the same shape in the machining drawing as the same shape, and creates the machining start point having the same machining defining means. The means and the processing start element determining means define the processing so that the positional relationship between the processing start point and the processing start element is the same for the same shape. The processing condition addition means having the same processing definition means adds the same process information to the same shape. As a result, the same machining definition can be made for the same shape during automatic definition, and the same NC program can be created. Therefore, the same shape can be manually confirmed from the drawings and the same machining can be defined. The labor and time can be reduced.

Further, the drill hole information setting means sets the size information of the drill hole. Based on the size information of the drill hole set by the drill hole information setting means, the drill hole creation defining means creates a circular element with the machining start position obtained by the machining start point creating means as the center point, and performs machining. Add drill hole element information to the starting point. As a result, a drill hole through which a wire can be inserted can be performed without manpower, so that labor and time can be shortened, and mistakes due to manual calculation can be avoided.

Further, the drill hole information setting means having the drill hole information setting means for each processing method sets the size of the drill hole created by the processing method. The drill hole creation defining means having the drill hole creating means for each processing method creates a drill hole element of a specified size according to the processing method based on the size information of the drill hole set by the drill hole information setting means. . This makes it possible to avoid a calculation error when manually calculating the size of the drill hole. Further, since the size of the drilling hole can be changed depending on the machining method, a more efficient machining NC program can be created.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The CAD / CAM device of any of the embodiments has the entire configuration shown in FIG.

Example 1. In FIG. 1, reference numeral 1 is a machining shape defining means for creating a shape as shown in FIG. 11-a by using a keyboard 25, a mouse 26, etc., and 2 is a shape for storing drawing data created by the machining shape defining means 1. The data storage means 3 recognizes whether or not the shape created by the processing shape definition means 1 can be processed into a closed shape continuously, and also has a processed shape recognition means for determining the same shape in the drawing. Means 4, a machining method determination condition setting means for setting conditions for determining a machining method, 5 a machining step registration means capable of registering a plurality of machining steps, and 6 a machining step registration means 5. A machining method corresponding process selecting means for selecting one process from a plurality of registered machining processes for a machining method, and 7 having the same machining defining means, which is an optimum machining start position from a machining shape. Machining start point creating means for deciding and creating a machining starting point, 8 has the same machining defining means, machining starting element determining means for deciding the machining starting element according to the machining method, and 9 has the same machining defining means However, the processing condition adding means for adding the processing conditions such as the processing step to the processing start element, 10 is the processing order determining means for changing the processing order so as to shorten the processing path, and 11 is the wire insertion drill hole information. It is a drill hole defining means to be added to the machining start point created by the machining start point creating means 8.

Next, the operation will be described. In the machining shape defining means 1, when various data regarding the shape is input from the keyboard 25 or the mouse 26, the data is transferred to the CPU 21 via the bus 29, and after the processing based on the instruction of the operator, the points, lines, Shape data such as circles, dimension lines, data such as notes are created and displayed on the CRT 24, and stored in the memory 22 by the shape data storage unit 2. While confirming the processing result from the displayed contents, the shape data is repeatedly input to create the shape to be processed.

The machining shape recognition means 3 will be described with reference to the flow charts of FIGS. 4 and 5 and FIG. 11-a is created by the above-mentioned procedure, the shapes in the drawing are sequentially obtained in step (S1), and the step shown in FIG.
If it is determined in step (S3) that the closed shape can be made continuous as in step b, the shape that can be made continuous in step (S4) is set as the same shape search target, and in step (S3) If it is determined to be other than the step (S
In 5), the open shape is excluded from the same shape search target. Further, if it is determined in step (S1) that the continuation of all shapes is completed, a reference shape for determining whether or not the same shape exists from the same shape search target is obtained in step (S6) (FIG. 1).
1-c (A)). If there is no reference shape to be searched in step (S6), the process ends, otherwise, in step (S7), the reference element of the reference shape is determined (FIG. 11-c).
Element 1). Next, the shape to be checked in step (S8) is obtained (FIG. 11-c (B)). In step (S9), the provisional reference element of the shape to be checked is determined (element 5 in FIG. 11-c).

Next, if the reference shape and the check shape reference elements are equal in step (S10), and the size and positional relationship of the next element adjacent to the reference shape and the check shape reference element are equal, step (S11). ), The check shape is moved so that the temporary reference element of the check shape overlaps the reference element of the reference shape, and in step (S12), the positional relationship between the reference element, the adjacent element, and the other elements is different between the reference shape and the check shape. If it is determined that they are equal, information that the reference shape and the check shape are the same shape is added in step (S13), and step (S8) and subsequent steps are repeated.
If it is determined otherwise in step (S10) or step (S12), the reference shape and the reference shape reference element are equal in step (S14), and the adjacent element of the reference shape and the adjacent element of the check shape are opposite to each other. If the size and the positional relationship of the adjacent elements of are equal, step (S15)
Rotate the check shape so that the temporary reference element of the check shape overlaps the reference element of the reference shape in step S1.
If it is determined in 6) that the reference element, the adjacent element, and the other elements have the same positional relationship between the reference shape and the check shape, information that the reference shape and the check shape are the same is added in step (S17). And step (S8)
Repeat the above. If it is determined otherwise in step (S14) or step (S16), the next temporary reference element is determined from the check shape elements in step (S18). If the next element exists, step (S10) and subsequent steps are repeated. When the determination is completed for all the elements forming the check shape in step (S18), step (S8) and subsequent steps are repeated.

For example, if the temporary reference element of FIG. 11C is element 5, it is not equal to element 1 which is the reference element of FIG. 11A, so the temporary reference element of FIG. If changed, the reference element (element 1) and the temporary reference element (element 6) have the same size, and the elements (element 2 and element 7) adjacent to the reference element have the same size, but the positional relationship between the reference element and the adjacent element is Since it is different, the next adjacent element (element 5) on the opposite side of the check shape is obtained. In this case, although the sizes are the same, the positional relationship between the reference element and the adjacent element is different, so that the temporary reference element having the check shape is changed. Next, the element 8 whose provisional reference element is equal to the reference element is set as the provisional reference element. Reference element (element 1)
And the elements (element 2 and element 5) adjacent to the reference element having the same length as the temporary reference element (element 8) have the same size, but the positional relationship between the reference element and the adjacent element is different. Obtain the adjacent element on the opposite side of the shape (element 7). In this case, since the sizes are the same, (B) is moved so that the temporary reference element of the check shape overlaps the reference element of the reference shape (FIG. 11-d (B)). As a result, since the positional relationship between the reference element and other adjacent elements is the same, (A) and (B) have the same shape, and information that the shape is the same is added to the shape.

Regarding the processing method determination condition setting means 4,
Similar to the processing method determination condition setting means 34 of FIG. 14, the determination condition for determining the processing method is set. Regarding the machining step registration means 5, a plurality of machining steps are registered in the same manner as the machining step registration means 35 of FIG. The processing method corresponding process determining means 6 selects one step for each processing method from the plurality of steps registered in the processing step registration 5, similarly to the processing method corresponding step determining means 36 of FIG.

The processing start point creating means 7 will be described with reference to the flowchart of FIG. Step (S21)
Then, if there is a shape determined to be the same shape by the processing shape recognition unit 3 among the processing-defined shapes, the processing start point has the same positional relationship with respect to the processing shape having the same shape in step (S23). To find the position. Step (S2
If it is determined otherwise in step 1), step (S2
The optimum position for starting the machining in 2) is obtained. In step (S24), step (S22),
Alternatively, a point element is created at the position obtained in step (S23). The processing start point information is added to the point element created in step (S24).

The processing start element determining means 8 is shown in FIG.
This will be described with reference to the flowchart of. Step (S3
In 1), the processing shape recognition means 3 among the processing-defined shapes
If there is a shape that is determined to be the same shape in,
In step (S39), the element that corresponds to the same element as the machining start element of the reference shape is determined as the machining start element of the same machining shape, and in step (S38), information that is an element to start machining is added to the element. If it is determined in step (S31) that it is other than that, if it is determined in step (S32) that the area of the machining shape is equal to or less than the maximum area for enlarging machining set by the machining method determination condition setting means 4 In step (S33) as enlargement processing, an element located far from the processing start point is obtained. If it is determined in step (S32) that the cutting-off process is otherwise performed, in step (S34), an element located near the machining start point is obtained. Also, in step (S35), step (S3)
3) or if it is determined that the element obtained in step (S34) can be normally machined from the machining start point,
In step (S38), information that is an element for starting processing is added to the element. If it is determined otherwise in step (S35), another adjacent element is obtained. If there is an element that has not been determined in step (S37), step (S35) and subsequent steps are repeated.

The processing condition adding means 9 will be described with reference to the flowchart of FIG. In step (S41), if there is a shape determined to be the same shape by the processing shape recognition means 3 among the processing-defined shapes, step (S46) obtains process information of the same processing as the same shape.
If it is determined in step (S41) that it is other than that, if it is determined in step (S42) that it is less than or equal to the maximum area for enlargement processing set by the processing method determination condition setting means 34, step (S43). The process information of the enlarging process determined by the process method corresponding process determining means 6 is obtained at. If it is determined otherwise in step (S42), the process information of the cut-off processing determined by the processing method corresponding process determining means 6 is obtained in step (S44). In addition, step (S
In 45), the process information obtained in step (S43, S44 or S46) is added to the processing start element.

The processing sequence changing means 10 is shown in FIG.
The processing order is changed in the same manner as the processing order changing unit 40.
Further, with respect to the drill hole defining means 11, the drill hole shape information is added to the processing start point element similarly to the drill hole defining means 41 of FIG. For example, FIG. 18-c shows a shape obtained by processing and defining FIG. 18-a in this way. Therefore, the same NC program can be created for the same shape at the time of automatic definition by the above processing steps.

Example 2. 2, reference numerals 1 and 2 denote machining shape defining means for creating a shape and storing drawing data, like the machining shape defining means 1 and the shape data storing means 2 in FIG.
Shape data storage means, 12 is a processing shape recognition means for determining whether or not the shape created by the processing shape defining means 1 is a shape that can be processed, 4 is a processing method determination condition setting means similar to 4 in FIG. 1 is a machining step registration means similar to 5, 5 is a machining method corresponding step determination means similar to 6 in FIG.
Reference numeral 13 is a drill hole information setting means for setting size information of a wire drill hole, 14 is a processing start point creating means for determining an optimum processing start position from a processing shape and creating a processing start point,
15 is a drill hole information setting means 1 centering on the machining start point
Drill hole creation defining means for creating a circle element of the size set in 3 and adding drill hole element information to the machining start point, 1
6 is a machining start element determining means for deciding a machining start element according to a machining method, 17 is a machining condition adding means for adding machining conditions such as a machining process to the machining start element, and 10 is 1 in FIG.
This is a processing sequence changing means similar to 0.

Next, the operation will be described. The machining shape definition means 1 and the shape data storage means 2 are shown in FIGS.
Create a shape to be processed in the same manner as in step 1 and store the drawing data. The machining shape recognition unit 12 determines whether the shape created similarly to the machining shape recognition unit 33 of FIG. 14 is a shape that can be machined. With respect to the processing method determination condition setting means 4, similar to the processing method determination condition setting means 4 of FIG. 1, determination conditions for determining the processing method are set. Regarding the machining step registration means 5, the machining step registration means 5 of FIG.
Register a plurality of processing steps in the same manner as. As for the processing method corresponding process determining means 6, like the processing method corresponding step determining means 6 of FIG. 1, one step is selected for each processing method from the plurality of steps registered in the processing step registration 5.

With respect to the drill hole information setting means 13, the size of the drill hole into which the wire is inserted is set. The processing start point creating means 14 creates a processing start point in the same manner as the processing start point creating means 37 of FIG. The drill hole creation defining means 15 will be described with reference to the flowchart of FIG. In step (S51), the diameter of the maximum drill hole that can be created from the machining start point and the machining element is obtained, and in step (S52), the diameter of the drill hole set by the drill hole information setting means 13 is obtained in step (S51). If it is determined that the diameter is larger than the maximum drill diameter, the drill hole creation definition is ended. If it is determined otherwise in step (S52), the diameter of the drill hole created in step (S53) is smaller than 10 mm, the diameter of the drill hole created according to the actual drill. Is reduced by 0.5 mm. After step (S54) or if it is determined otherwise in step (S53), a circular element centering on the machining start point is created in step (S55), and the machining element is set as the machining start point in step (S56). The information of the circle element created in step (S55) is added as drill hole information.

The processing start element determining means 16 determines an element for starting the processing, similarly to the processing start element determining means 38 of FIG. Regarding the processing condition adding means 17,
Similar to the processing condition addition means 39 of FIG. 14, processing step information is added to the processing start element. The processing order changing means 10 changes the processing order in the same manner as 10 in FIG. As a result, it is possible to automatically perform a drill hole through which the wire is passed.

Example 3. In FIG. 3, reference numerals 1 and 2 denote machining shape defining means for creating a shape and storing drawing data in the same manner as the machining shape defining means 1 and the shape data storing means 2 in FIG.
Shape data storage means, 12 is a processing shape recognition means for determining whether or not the shape created by the processing shape defining means 1 is a shape that can be processed, 4 is a processing method determination condition setting means similar to 4 in FIG. 1 is a machining step registration means similar to 5, 5 is a machining method corresponding step determination means similar to 6 in FIG.
Reference numeral 18 is a drill hole information setting unit having a drill hole information setting unit for each processing method for setting the size information of the wire drill hole for each processing method, and 14 is the optimum processing start position from the processing shape as in 14 of FIG. 2 is a machining starting point creating means for creating a machining starting point, 19 is a drilling hole creating defining means having a drilling hole creating means for each machining method for creating a drill hole by changing the size for each machining method, and 16 is shown in FIG. Similar to 16, processing start element determining means for determining a processing start element according to the processing method, 17 is processing condition adding means for adding processing conditions such as a processing step to the processing start element, as in 17 of FIG. 1
Reference numeral 0 is a processing sequence changing means similar to 10 in FIG.

Next, the operation will be described. The machining shape definition means 1 and the shape data storage means 2 are shown in FIGS.
Create a shape to be processed in the same manner as in step 1 and store the drawing data. The machining shape recognition unit 12 determines whether the shape created similarly to the machining shape recognition unit 12 in FIG. 2 is a shape that can be machined. With respect to the processing method determination condition setting means 4, similar to the processing method determination condition setting means 4 of FIG. 1, determination conditions for determining the processing method are set. With respect to the machining step registration means 5, a plurality of machining steps are registered in the same manner as the machining step registration means 5 of FIG. As for the processing method corresponding process determining means 6, like the processing method corresponding step determining means 6 of FIG. 1, one step is selected for each processing method from the plurality of steps registered in the processing step registration 5.

With respect to the drill hole information setting means 18 having the drill hole information setting means for each processing method, the size of the drill hole into which the wire is inserted is set for each processing method. For example,
When the drill hole information setting means for each processing method sets as shown in Table 3, a drill hole is created as shown in FIG. 11 for each of the enlargement processing and the cut-off processing. The processing start point creating means 14 creates a processing start point in the same manner as the processing start point creating means 14 in FIG.

[Table 3] The drill hole creation defining means 19 having a drill hole creating means for each processing method will be described with reference to the flowchart of FIG. In step (S61), the diameter of the largest drill hole that can be created from the machining start point and machining element is determined. If it is determined in step (S62) that the machining method is enlargement machining, then in step (S63) the maximum machining hole diameter and the maximum machining drill hole maximum remaining margin set by the drill hole information setting means 18 (Table 3- The difference from a) is the diameter of the drill hole created during expansion processing. In step (S64), the cut-off drill hole diameter (Table 3-b) set by the drill hole information setting means 18 is obtained. After the diameter of the drill hole to be created is obtained, in step (S65), step (S63,
The diameter of the drill hole obtained in S64) is the step (S6
When it is determined that the diameter is larger than the maximum diameter of the drill hole obtained in 1), the drill hole creation definition is ended. If it is determined in step (S65) other than that, if it is determined that the diameter of the drill hole created in step (S66) is smaller than 10 mm, the diameter of the drill hole created in step (S67) is set to 0. Decrease by 5 mm. After step (S67) or if it is determined otherwise in step (S66), a circular element centered on the machining start point is created in step (S68), and step (S6).
In 9), information on the circular element created in step (S68) is added to the machining start point as drill hole information.

With respect to the machining start element determining means 16, the element for starting machining is determined in the same manner as the machining starting element determining means 16 of FIG. Regarding the processing condition adding means 17, processing step information of processing is added to the processing start element as in the processing condition adding means 17 of FIG. Regarding the processing order changing means 10, the processing order is changed in the same manner as the processing order changing means 10 of FIG. Therefore, as described above, since the drill hole can be changed depending on the machining method, an efficient NC program can be created, and a mistake in calculating the size of the drill hole can be eliminated.

[0036]

As described above, according to the present invention, since the same shape existing in the drawings is automatically recognized as the same shape and the definition of the same shape is made, the working time is greatly shortened. In addition, it is possible to easily create the same NC program for the same shape. Furthermore, since the machining definition is automatically performed while specifying the machining method for each machining shape, it is possible to shorten the machining definition time and prevent human error because the machining method is not set manually. There is an effect that can be.

Further, since the information of the drill hole element is added to the processing starting point based on the size information of the drill hole set by the drill hole information setting means, the drill hole for passing the wire is automatically created. Therefore, the working time can be shortened.

Further, since the size of the drill hole can be changed depending on the machining method, there is an effect that an efficient NC program for machining can be created.

[Brief description of drawings]

FIG. 1 is a configuration diagram of essential parts of a CAD / CAM device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of main parts of a CAD / CAM device according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a main part of a CAD / CAM device according to a third embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the machining shape recognition means in FIG.

5 is a flowchart showing the operation of the machining shape of FIG. 1, which is a continuation of FIG.

FIG. 6 is a flowchart showing the operation of the processing start point creating means in FIG.

FIG. 7 is a flowchart showing the operation of the processing start element determining means of FIG.

8 is a flowchart showing the operation of the processing condition adding means of FIG.

9 is a flowchart showing the operation of the drill hole creation defining means of FIG.

10 is a flowchart showing the operation of the drill hole creation defining means of FIG.

FIG. 11 is a diagram showing a recognition process of the same shape when the shape is defined by the CAD / CAM device shown in FIG. 1;

FIG. 12 shows a state of creating a drill hole for inserting a wire according to a processing method.

FIG. 13 is an overall configuration diagram of a CAD / CAM device.

FIG. 14 is a main part configuration diagram of a conventional CAD / CAM device.

FIG. 15 is a flowchart showing an operation of a machining start point creating unit of a conventional CAD / CAM device.

FIG. 16 is a flowchart showing the operation of a machining start element determining means of a conventional CAD / CAM device.

FIG. 17 is a flowchart showing an operation of a processing condition adding unit of a conventional CAD / CAM device.

FIG. 18 is a diagram showing a machining shape defined and automatically defined by the conventional CAD / CAM apparatus according to the first embodiment.

FIG. 19 is a diagram showing a processing route of enlargement processing / cutting-off processing.

FIG. 20 is a diagram showing a processing start shape of enlargement processing / cut-off processing.

[Explanation of symbols]

1 Machining shape definition means 2 Geometry data storage means 3 Machining shape recognition means (identical shape recognition means) 4 Machining method determination condition setting means 5 Machining process registration means 6 Machining method corresponding process decision means 7 Machining start point creation means (same machining definition Means) 8 Machining start element determining means (same machining definition means) 9 Machining condition adding means (same machining definition means) 10 Machining order changing means 11 Drill hole defining means 12 Machining shape recognizing means 13 Drill hole information setting means 14 Machining start point Creating means 15 Drill hole creation defining means 16 Machining start element determining means 17 Machining condition adding means 18 Drill hole information setting means (drilling hole information setting means by machining method) 19 Drilling hole creation defining means (drill hole creation means by machining method)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadahiko Hasegawa 5-14 Yanda Minami 5-chome, Higashi-ku, Nagoya City Mitsubishi Electric Corporation Nagoya Works

Claims (3)

[Claims] 1. A machining shape defining unit that defines a machining shape based on input shape data, and the same shape that recognizes whether or not the defined shape can be machined and that recognizes the same shape from a plurality of machining shapes. The machining shape recognizing means having the shape recognizing means and the position to start the machining based on the machining shape are obtained, and in the case of the same shape, the machining starting point is determined so that the positional relationship between the machining starting point and the machining shape is the same. The machining start point creating means having the machining definition means and the element to start machining depending on the machining shape are determined, and in the case of the same shape, the machining start element is set so that the positional relationship between the machining start element and the machining shape becomes the same. When a machining start element determination means having the same machining definition means to be determined and a machining method are determined by a machining shape and a machining step is added to the machining start element according to the determined machining method Both are provided with machining condition adding means having the same machining definition means for adding the same machining information to the machining start element for the same shape.
/ CAM device. 2. A machining shape defining means for defining a machining shape based on inputted shape data, a machining shape recognizing means for recognizing whether or not the defined shape can be machined, and a machining start for starting machining by the machining shape. Machining start point creating means for deciding points, drill hole information setting means for setting drill hole information for wire insertion, and a drill hole of the size set by the drill hole information setting means according to the machining start point and machining shape. A drill hole creation defining means to be created, a machining start element determining means for deciding an element to be machined according to the machining shape, a machining method is decided according to the machining shape, and a machining step is set as a machining start element according to the decided machining method. A CAD / CAM device comprising a processing condition adding means for adding. 3. A drill hole information setting unit having a drill hole information setting unit for each processing method capable of setting drill hole information for inserting a wire for each processing method, and a drill hole information setting unit for each processing method. 3. The CAD / CAM according to claim 2, further comprising: drill hole creation defining means having drill hole creating means for creating a drill hole according to the drilling hole information and the working method.
apparatus.