JPH11338529A - Data converting method and cad/cam device, and computer-readable recording medium where program for implementing its data converting method is recorded - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make changeable an arithmetic method used to convert NC data into graphic data. SOLUTION: In the CAD/CAM device 10 an arithmetic method storage part 5 stores arithmetic methods such as a center coordinate position priority method, an end-point coordinate position priority method, a horizontal and vertical line coordinate position priority method, a radius priority method, and an angle priority method and an NC data acquisition part 1 acquires NC data, and an operator selects one or plural arithmetic methods out of the methods stored in the arithmetic method storage part 5 by using an arithmetic method selection part 6, a graphic data generation part 2 generates graphic data by the arithmetic method selected by the operator, a display part 3 displays an image of the graphic data, and an NC data generation part 4 generates NC data from the graphic data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data conversion method, a CAD / CAM device, and a computer-readable recording medium on which a program for executing the data conversion method is recorded, and more particularly, to a set operation method. Conversion method for converting NC data into graphic data based on a program, a CAD / CAM device capable of suitably executing the data conversion method, and a computer-readable recording medium storing a program for executing the data conversion method It is about.

[0002]

2. Description of the Related Art A CAD / CAM apparatus is provided with a given NC.
The data is converted into graphic data, a processed shape based on the graphic data is displayed as an image, the processed shape is edited using an editing function, graphic data is created from the edited processed shape, and an NC laser is formed from the graphic data. Create NC data for a processing machine or an NC cutting device such as an NC plasma cutting machine.

FIG. 6 is an example of a block diagram functionally showing a conventional CAD / CAM device. This CAD / CAM
In the device 100, the NC data acquisition unit 1, the graphic data creation unit 2, the display unit 3, and the NC data creation unit 4
Connected by FIG. 7 shows a flowchart of the operation of the CAD / CAM device 100. In step S1, the NC data acquisition unit 1 reads NC data from a recording medium such as a tape reader puncher or a floppy disk. Note that the NC data may be input using a keyboard. In step S2, the graphic data creation unit 2
The NC data is converted into graphic data based on a preset calculation method. In step S3, the display unit 3 displays an image of the processed shape based on the graphic data. The operator confirms the processed shape and edits it if necessary. In step S4, the NC data creating unit 4 converts the figure data of the determined processed shape into NC data and outputs the NC data.

Here, referring to FIGS. 8 and 9, FIG.
As shown in FIG. 9, FIG. 9 shows a processing path when laser processing is performed on a processing shape having a perfect circle C and a long hole shape H therein. The dimensions in FIG. 8 are in millimeters here. The processing head that outputs laser light rapidly moves from a processing reference position 51 to a position 53 along a dotted line 52 without outputting laser. Next, processing is performed along the piercing line 54 to a position 55 on the perfect circle C while outputting laser light. Then, processing is performed along the line 56 to the position 55 while outputting the laser light, and the laser light is turned off.
Thereby, the perfect circle C is processed. Thereafter, from the position 55, the laser is not output, and the position 58
Fast forward to.

Next, processing is performed along the piercing line 59 to a position 5A on the elongated hole shape H while outputting a laser beam.
Then, while outputting laser light, the long hole elements 5B, 5C,
Processing is performed up to position 5A in the order of 5D, 5E, and 5F, and the laser beam is turned off. Thereby, the elongated hole shape H is processed. Thereafter, the laser beam is rapidly moved from the position 5A to the position 5H along the dotted line 5G without outputting the laser. Next,
Position 5J along piercing line 5I while outputting laser light
Work up to. Then, while outputting the laser beam, the outer peripheral elements 5K, 5L, 5M, 5N, 5O, 5P, and 5Q are processed in this order to the position 5J, and the laser beam is turned off. Thereby, all the processes are completed.

FIGS. 10 and 11 show two examples of NC data used for processing the shape shown in FIG. 9 which use different NC command codes. The NC data consists of a large number of commands. Note that FIG. 10 describes the description of each command, and FIG. 11 omits the description of each command. When these commands are verified, for example, a command indicating the machining reference position 51 starts with N4, a command for fast-forwarding to the position 53 along the dotted line 52 starts with N5, and a command for turning on the laser beam is N.
6, a command to move along the piercing line 54 to the position 55 starts with N7, a command to move to the position 55 along the line 56 starts with N8, and commands to turn off the laser beam N9 and N10. Lines starting with are shown.

[0007] Further, a command to move fast along the dotted line 57 to the position 58 starts at N11, a command to turn on the laser beam starts at N12, and a command to move along the piercing line 59 to the position 5A starts at N13. , A command to move along the long hole element 5B starts with N14, a command to move along the long hole element 5C starts with N15, and a command to move along the long hole element 5D starts with N16. Line, the command to move along the long hole element 5E starts with N17,
The line that moves along the long hole element 5F starts with N18 and the line that turns off the laser beam starts with N19 and N20.

Further, a command to start fast-forwarding to the position 5H along the dotted line 5G starts at N21, a command to turn on the laser beam starts at N22, and a command to move to position 5J along the piercing line 5I at N23. , A command to move along the outer element 5K starts with N24, a command to move along the outer element 5L starts with N25, a command to move along the outer element 5M starts with N26,
A command to move along the peripheral element 5N starts with N27, a command to move along the peripheral element 5O starts with N28, a command to move along the peripheral element 5P starts with N29, and a command to move along the peripheral element 5Q A line that starts with N30, a line that turns off the laser beam starts with N31 and N32, a line that starts with an offset cancel command starts with N33, and a line that ends processing ends with N34.

Here, NC data in FIG. 10 and N data in FIG.
Explaining the difference between the C data, the NC data in FIG. 10 uses the arc end point coordinates and the arc center coordinates (I, J) to machine the arc of the elongated hole shape H.
The data uses the arc end point coordinates and the arc radius (R).
For example, in the NC data shown in FIG. 10, as shown in the command of the line starting with N14, "the arc end point coordinates are (56.18,
50), the center coordinates of the arc form the -15 mm long slot element 5B in the X direction (from the coordinates (60, 40) of the end point 5A of the piercing line 59). In the NC data of No. 11, as shown in the command of the line starting with the same N 14, “the arc end point coordinate is (56.1
Elongated hole element 5 with an arc radius of 15 mm at 8,50)
B is formed. "

That is, when an error occurs as described later when forming the elongated hole element 5B, the NC data in FIG. 10 gives priority to the arc center coordinates, whereas the NC data in FIG. The NC data gives priority to the coordinates of the arc end point. In FIGS. 10 and 11, a line starting with N16 indicating the slot element 5D and N1 indicating the slot element 5F are shown.
There is such a difference in the instruction method also in the line starting with 8 and the line starting with N29 indicating the outer peripheral element 5P.

Next, the reason why an error occurs when the elongated hole element 5B is formed will be described. When converting the element portion after the slot element 5B in FIG. 8 into NC data, for example, at the coordinates of the end point of the slot element 5B, that is, the coordinates of the start point of the slot element 5C, the arc element-shaped slot element 5B and the horizontal line are used. It becomes an intersection with a certain long hole element 5C. When the coordinates of this intersection are calculated, the Y coordinate is 50.000, but the X coordinate is 56.1.
It becomes an indivisible number of 8034 (hereinafter abbreviated).
Normally, the number of significant digits is limited to the NC data command operable in the processing machine body. For this reason, for example, the X coordinate command of the starting point coordinates of the slot element 5C is rounded off to the fourth digit (submicron) after the decimal point, and is 56.180 as shown in the line starting with N14. NC data is created. As described above, a dimensional error occurs due to rounding when converting to NC data depending on the shape.

Similarly, the X coordinate becomes an indivisible number at each of the starting point coordinate position of the elongated hole element 5D, the starting point coordinate position of the elongated hole element 5E, and the starting point coordinate position of the elongated hole element 5F, and is converted into NC data. In this case, dimensional errors occur due to rounding. For example, in FIG. 10, the X coordinate command “X56.18” for the line starting with N14, the X coordinate command “X33.82” for the line starting with N15, the I coordinate command “I11.18” for the line starting with N16, and N17 The X coordinate command “X56.18” or the like in the starting line is a portion where a dimensional error occurs due to rounding.

When there is a portion where a dimensional error occurs in the NC data, a processed shape cannot be created with the specified dimensions. Taking the NC data of FIG. 10 as an example, the command to create the long hole element 5B shown in the line starting with N14 is “the arc end point coordinate is (56.18, 50) and the arc center coordinate is (45, 40). ) (That is, -15 mm in the X direction from the end point coordinates (60, 40) of the piercing line 59). "
An arc with a radius of 15 millimeters having (5,40) passes near the coordinates (56.18034,50) exactly,
The coordinates specified as the arc end point coordinates (56.18,
50), the figure cannot be created as specified. On the other hand, taking the NC data of FIG. 11 as an example, the command to create the slot element 5B shown in the line starting with N14 is “the arc end point coordinate is (56.18, 50).
To form a long hole element 5B having an arc radius of 15 mm ", but a radius of 15 mm passing through two points of the coordinate position 5A (60, 40) and the coordinates of the arc end point (56.18, 50). The center coordinates of the arc deviate from the original center coordinates (45, 40), and a figure cannot be created as specified.

Although the description has been given of the situation where an error occurs in the NC data in the arc shape, an error may occur in the NC data in the linear shape. For example, in the case of the machining shape as shown in FIG. 12, since the designation for drawing the element 121 is only the angle, its end point coordinate, that is, the start point coordinate of the element 122 is the dimension value 48 of the Y-axis dimension in FIG. .8675
The result is an indivisible number as shown in FIG. If the NC data is created based on this shape, the command in the submicron portion is rounded off, so that the Y-axis command value is 48.868. When converted into graphic data based on the NC data command, the shape shown in FIG. 13 is obtained. The coordinates of the end point of element 121, that is, the coordinates of the start point of element 122, and the angle of 30.000 are obtained.
A shift occurs at 00 degrees.

In order to solve this problem, conventionally, FIG.
As shown in step S2, one calculation method is determined, and graphic data is created based on the calculation method. As the calculation method, for example, there is an arc center coordinate priority method in which the arc center coordinate is prioritized, and an arc end coordinate priority method in which the arc end coordinate is prioritized.

Next, the arc center coordinate priority method will be described. FIG. 14 shows the long hole element 5B and the long hole element 5 in FIG.
The enlarged view near the intersection of C is shown. The long hole element 5B has a center coordinate of 84 (45, 40) and a starting point coordinate 5A (60, 4).
0). The straight line 81 has a center coordinate 84
And the end point coordinates 82 specified in the NC data (56.18,
50). Since an error occurs in the end point coordinates of the elongated hole element 5B for the above-described reason, the elongated hole element 5B does not pass through the specified end point coordinates 82.

Therefore, the center coordinate 84 (45, 40) is held, and the intersection 83 on the extension of the elongated hole element 5B and the straight line 81 is held.
(56.18034, 50.00017) is obtained as an approximate point, and this point 83 is set as the end point of the slot element 5B and the start point of the slot element 5C. The slot element 5B and the slot element 5
Although the intersection 83 of C also has a coordinate value that is not strictly divisible, elements such as the slot element 5B and the slot element 5C in FIG. 14 are generally displayed at the position where the intersection is obtained using the drawing function of CAD. It is possible to do. In FIG. 14, 5B1 is a designed slot element 5B, and 5C1 is a designed slot element 5C.

As described above, since the starting point coordinates of the long hole element 5C are (56.18034, 50.00017),
The end point coordinates of the horizontal hole element 5C are (33.820
00, 50.00017), which is different from the coordinates (33.82, 50) specified in the line starting with N15 in FIG.

FIG. 15 is an enlarged view of the vicinity of the intersection of the long hole element 5D and the long hole element 5E in FIG. The long hole element 5D is
End point coordinates (33.82000, 50.0) of slot element 5C
0017) as a starting point, and the coordinates (33.82000,
50.00017) to 11.18 millimeters in the X direction and -10 millimeters in the Y direction (45.0).
0000, 40.00017). However, the designated slot element 5D1 starts at the end point coordinates (33.82, 50) of the slot element 5C1 and receives the end point coordinates (33.82, 50), coordinates (45,11) at 11.18 mm in the X direction and -10 mm in the Y direction.
40), the actual elongated hole element 5
D does not pass through the specified end point position 92. Therefore, the center coordinates (45, 40) are held, and the center coordinates (45, 40) are held.
Point 9 on the straight line 91 connecting the point 40) and the end point of the slot element 5D1
3 (33.82000, 30.00008) is determined as an approximate point, and is set as the end point of the slot element 5D and the start point of the slot element 5E. 5E1 is a long hole element 5E in design.

As described above, since the starting point coordinates of the long hole element 5E are (33.82000, 30.00008),
The end point coordinates of the long hole element 5E are (56.18000, 30.
00008) and the coordinates (56.180000,3
0.00008) as the starting point of the arc-shaped elongated hole element 5F
As shown in FIG. 16, the end point (40.00000, 59.9999975) of the long hole element 5B and the start point 5A (40, 6
0). As described above, as a result of using the calculation method of giving priority to the arc center coordinates, a processed shape as shown in FIG. 17 is obtained, which is different from the original processed shape shown in FIG. On the other hand, in the case of the end point coordinate priority method, as shown in FIG. 18, the end point coordinates 82 (56.18, 56.18,
50), but the center position 84 of the elongated hole element 5B is shifted to the position 85.

As described above, the conventional CAD / CAM device 1
At 00, figure data is obtained based on one preset calculation method. However, when the arc center coordinate priority method is used as the calculation method, the graphic is different from the original graphic as shown in FIG. On the other hand, if the arc end coordinate priority method is used, the center coordinates of the arc deviate from the designated center coordinates as shown in FIG.

[0022]

The above conventional CAD / C
In the AM device, since graphic data is obtained based on one preset arithmetic method when creating graphic data, it is impossible to change the arithmetic method.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a data conversion method in which an arithmetic method can be freely set or changed, and a CAD / CAM capable of suitably implementing the data conversion method. It is an object of the present invention to obtain a computer-readable recording medium on which an apparatus and a program for executing the data conversion method are recorded.

[0024]

In order to achieve the above object, a data conversion method according to the present invention is a data conversion method for converting NC data into graphic data based on a set operation method. Is prepared, the operator selects one or a plurality of calculation methods from among these calculation methods, and sets the calculation method selected by the operator as a calculation method used for NC data conversion.

In the data conversion method according to the present invention, the operator can set or change the operation method only by selecting one or more operation methods from the plurality of operation methods.

A data conversion method according to the next invention is a data conversion method for converting NC data into graphic data based on a set calculation method, wherein a plurality of calculation methods are prepared and based on a predetermined criterion. One or a plurality of calculation methods are set as calculation methods used for converting NC data.

In the data conversion method according to the present invention, one or more calculation methods can be automatically set or changed from a plurality of calculation methods based on a predetermined criterion.

[0028] In the data conversion method according to the next invention, in the above data conversion method, the calculation method includes a center coordinate position priority method, an end point coordinate position priority method, a horizontal / vertical line coordinate position priority method, and a radial dimension priority method. This is an angle dimension priority method.

In the data conversion method according to the present invention, one or a plurality of arithmetic methods are selected from a center coordinate position priority method, an end point coordinate position priority method, a horizontal / vertical line coordinate position priority method, a radial dimension priority method, and an angle dimension priority method. Can be set or changed as an arithmetic method used for the conversion of NC data.

In order to achieve the above object, a CAD / CAM apparatus according to the present invention converts a NC data into a graphic data based on a set operation method.
The AM device is provided with a plurality of operation methods, and is provided with operation method selection means for selecting one or a plurality of operation methods from among the operation methods, and the operation method selected by the operation method selection means is set to NC. This is set as an operation method used for data conversion.

In the CAD / CAM device according to the present invention,
The operator can set or change the operation method only by selecting one or more operation methods from the plurality of operation methods.

The CAD / CAM device according to the next invention is:
In a CAD / CAM apparatus that converts NC data into graphic data based on a set calculation method, a plurality of calculation methods are prepared, and one or more calculation methods are converted into NC data based on a predetermined criterion. Is provided with an operation method setting means for setting as an operation method used for (1).

In the CAD / CAM device according to the present invention,
One or more calculation methods can be automatically set or changed from a plurality of calculation methods based on a predetermined criterion.

[0034] In order to achieve the above object, a recording medium according to the present invention stores a program for causing a computer to execute the data conversion method.

With the recording medium of the present invention, the data conversion method of the present invention can be easily executed using a computer.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an electric discharge machine according to the present invention will be described below in detail with reference to the drawings.
In the embodiments of the present invention described below,
The same components as those of the above-described conventional example are denoted by the same reference numerals as those of the above-described conventional example, and description thereof is omitted.

Embodiment 1 FIG. 1 is a block diagram functionally showing a CAD / CAM device according to Embodiment 1 of the present invention. In the CAD / CAM device 10, the NC data acquisition unit 1, the graphic data creation unit 2, the display unit 3,
The data creation unit 4, the operation method storage unit 5, and the operation method selection unit 6 are connected by a bus 7.

FIG. 2 is a block diagram showing the CAD / CAM device 10 in terms of hardware. This CAD / C
The AM device 10 creates graphic data that defines the shape of the product based on the input various data, analyzes the cutting direction and cutting conditions, generates cutting information, and the like. A memory 22 for storing a calculation method to be described later, and a CRT 2 for displaying defined graphic data, a cutting path, cutting conditions, an input request message, and the like on a screen.
3, a keyboard 24 for inputting various data such as shape data and cutting conditions, a mouse 25 as a pointing device for selecting graphics, menus and calculation methods displayed on the CRT 23, and a floppy disk for defining graphics data. An auxiliary storage device 26 for storing in a recording medium such as a printer, a printer 27 for printing cutting information and display contents of a screen, and a plotter 28 for outputting a figure or the like based on the created figure data on a sheet. , Are connected by a bus 29.

In the first embodiment, the CPU 21
Play a role as the NC data acquisition unit 1 and the graphic data creation unit 2 shown in FIG. 1, the memory 22 plays a role as the calculation method storage unit 5 shown in FIG. 1, and the CRT 23
The keyboard 24 and the mouse 25 play the role of the calculation method selection unit 6 as the display unit 3 shown in FIG.

The calculation method storage unit 5 stores calculation methods such as a center coordinate position priority method, an end point coordinate position priority method, a horizontal and vertical line coordinate position priority method, a radius dimension priority method, and an angle dimension priority method. Here, as described above, the center coordinate position priority method is a calculation method for calculating the end point coordinate position while holding the center coordinate position of the arc shape. In addition, the end point coordinate position priority method is a calculation method for obtaining the end point coordinate position while holding the arc end point coordinate position.

FIG. 14 shows the horizontal / vertical coordinate position priority method.
In the part where inconsistency occurs in the indication of NC data as shown in the above, if the value of the number of digits of 10 microns or less starts at 99 at the coordinate position of the horizontal line or vertical line like the long hole element 5C, Rounded up to the nearest 100 microns, 0
In the case of starting with 0, this is an arithmetic method for automatically performing a process of rounding down a value lower than that to a number having no fraction and creating an element at the coordinate position. This is, for example, FIG.
As shown in FIG. 7, the Y coordinate of the long hole element 5C is 50.000.
Since the value of 17 is not more than 10 microns, 0017 is rounded down to a fractional value of 50.0. In FIG. 14, the vertical coordinate position is 50.0 between the slot element 5C and the slot element 5B. The extended intersection point is set as an intersection point 83 to be newly obtained.

Also, the radius dimension priority method is the NC method.
In the arc command shown in the data, if the number of digits of the calculated arc radius of 10 microns or less starts with 99, 10
This is a calculation method that automatically rounds up to the nearest 0 micron, and if it starts with 00, rounds down the value below it to a fractional number and creates an element with that value.
This is because, for example, the radius of the arc specified by the command in the line beginning with N14 in FIG. 10 is 14.999747 in calculation, so that 999747, which is 10 micron units or less, is rounded up to 100 micron units and a fraction of 15.0 It is a value without.

The angle dimension priority method means that, in a straight line command other than the vertical or horizontal direction indicated in the NC data, the number below the second decimal place of the linear angle size is 99.
If it starts with, it is rounded up to the first digit below the decimal point. If it starts with 00, it is a calculation method that automatically rounds down the value below it to a fractional number and creates an element with that value. . This is because, for example, the angle of the element 121 in the shape of FIG.
Since the value is 0.00042 degrees, the number below the second digit after the decimal point becomes 0042, and the value is rounded down to a value without a fraction of 30.0.

FIG. 3 shows a flowchart of the operation of the CAD / CAM device 10. In step S1, the NC data acquisition unit 1 reads NC data from a recording medium such as a tape reader puncher or a floppy disk. The NC data may be input using an input device such as a keyboard.

In step S21, the graphic data creation unit 2
Determines whether there is an instruction to use a preset calculation method. Here, for example, when the center coordinate position priority method is set in advance as the calculation method, the operator uses the keyboard 24 and the mouse 25 to instruct whether to use the predetermined calculation method. From the operator,
If there is an instruction not to use the preset operation method, the process proceeds to step S22, and if there is an instruction to use the preset operation method, the process proceeds to step S23.

In step S22, the operator uses the keyboard 24 or the mouse 25 to prioritize the end point coordinate position, the horizontal / vertical coordinate position priority method, the radius dimension priority method, and the angle dimension priority method stored in the operation method storage unit 5. And one or more of them are selected, and the calculation method selection unit 6 sets the calculation method selected by the operator as the calculation method used for converting the NC data. Here, for example, as shown in FIG. 14, the operator calculates the intersection of the long hole element 5B and the long hole element 5C using the center mark position priority method, for example, in the case of the shape of FIG. Choose a method. Thereby, an optimal calculation method can be set based on the processing shape.

In step S23, the graphic data creation unit 2
Converts all NC data into graphic data based on the set calculation method, and proceeds to step S3. In step S3, the display unit 3 displays an image of the processed shape based on the graphic data. The operator confirms the processed shape and edits it if necessary. In step S4, the NC data creation unit 4 converts the figure data of the determined machining shape into NC data and outputs the NC data.

According to the CAD / CAM device 10, the operator sets one or more of the plurality of calculation methods stored in the calculation method storage unit 5 as the calculation method used for converting the NC data. Therefore, it is possible to obtain a figure as specified, and the reliability of the apparatus is improved.

Embodiment 2 FIG. 4 is a block diagram functionally showing a CAD / CAM device according to Embodiment 2 of the present invention. In the CAD / CAM device 11, the NC data acquisition unit 1, the graphic data creation unit 2, the display unit 3,
The data creation unit 4 and the calculation method storage unit 5 are connected by a bus 7.

The hardware of the CAD / CAM device 11 is the CAD / CAM of the first embodiment shown in FIG.
The description is omitted because it is the same as the hardware of the device. In the second embodiment, the CPU 21 plays the role of the NC data acquisition unit 1 and the graphic data creation unit 2 shown in FIG. 4, and the memory 22 plays the role of the calculation method storage unit 5 shown in FIG. And the CRT 23
Plays a role as the display unit 3 shown in FIG.
It functions as the operation method storage unit 5 shown in FIG. Further, the operation method storage unit 5 stores the data in the first embodiment.
Similarly to the above, calculation methods such as a center coordinate position priority method, an end point coordinate position priority method, a horizontal and vertical line coordinate position priority method, a radius dimension priority method, and an angle dimension priority method are stored.

FIG. 5 shows a flowchart of the operation of the CAD / CAM device 11. In step S1, the NC data acquisition unit 1 reads NC data from a recording medium such as a tape reader puncher or a floppy disk. The NC data may be input using an input device such as a keyboard.

In step S31, the graphic data creation unit 2
Sets the optimal calculation method based on the NC data.
In other words, the graphic data creation unit 2 automatically sets the optimal calculation method based on the processing shape. For example, in the case of the elongated hole shape H in FIG. 9, the central coordinate position priority method is set as the calculation method, and in the case of a portion other than the elongated hole shape H, the end point coordinate position priority method is set as the calculation method. Thereby, an optimal calculation method can be set based on the processing shape.

In step S32, the graphic data creation unit 2
Converts the NC data into graphic data based on the set calculation method. In step S33, the graphic data creation unit 2 determines whether the conversion of all NC data has been completed. If the conversion of all NC data has not been completed, the process returns to step S31. If the conversion of all NC data has been completed, the process proceeds to step S3.

In step S3, the display unit 3 displays a processed shape based on the graphic data as an image. The operator confirms the processed shape and edits it if necessary. Step S
In step 4, the NC data creation unit 4 converts the figure data of the determined processed shape into NC data and outputs it.

According to the CAD / CAM device 11, one or more of the plurality of calculation methods stored in the calculation method storage unit 5 are used for converting NC data based on the processing shape. Since the setting can be performed automatically, the labor of the operator is reduced, and the processing speed is improved.

[0056]

As will be understood from the above description, according to the data conversion method according to the present invention, the operator can easily select one or a plurality of operation methods from among the plurality of operation methods. Since it can be set or changed, it is possible to obtain a figure as specified, and the reliability of the device is improved.

According to the data conversion method of the next invention, one or a plurality of calculation methods can be automatically set or changed from a plurality of calculation methods without the intervention of an operator. improves.

According to the data conversion method of the next invention, one or more of the center coordinate position priority method, the end point coordinate position priority method, the horizontal / vertical line coordinate position priority method, the radius dimension priority method, and the angle dimension priority method are selected. Can be set or changed as an arithmetic method used for converting NC data, so that it is possible to cope with any machining shape.

According to the CAD / CAM device of the next invention, the operator can easily set or change the operation method only by selecting one or more operation methods from the plurality of operation methods. A figure as specified can be obtained, and the reliability of the apparatus is improved.

According to the CAD / CAM apparatus according to the next invention, one or a plurality of calculation methods can be automatically set or changed from a plurality of calculation methods without operator intervention. Is improved.

According to the CAD / CAM device according to the next invention, a center coordinate position priority method, an end point coordinate position priority method,
One or more calculation methods are selected from the horizontal / vertical coordinate position priority method, radius dimension priority method, and angle dimension priority method.
Since it can be set or changed as an arithmetic method used for data conversion, it is possible to cope with any machining shape.

According to the recording medium of the next invention, the data conversion method of the present invention can be easily executed using a computer.

[Brief description of the drawings]

FIG. 1 is a block diagram functionally showing a CAD / CAM device according to a first embodiment.

FIG. 2 is a block diagram showing the CAD / CAM device of FIG. 1 in hardware.

FIG. 3 is a flowchart of an operation of the CAD / CAM device of FIG. 1;

FIG. 4 is a block diagram functionally showing a CAD / CAM device according to a second embodiment.

FIG. 5 is a flowchart of an operation of the CAD / CAM device of FIG. 4;

FIG. 6 is a block diagram functionally showing a conventional example of a CAD / CAM device.

FIG. 7 is a flowchart of an operation of a conventional CAD / CAM device.

FIG. 8 is an exemplary view of a processed shape.

FIG. 9 is a view showing an example of a machining path of the machining shape of FIG. 8;

FIG. 10 is an example of NC data of the processed shape in FIG. 8;

FIG. 11 is another example of the NC data of the machined shape in FIG. 8;

FIG. 12 is an illustration of another processing shape.

FIG. 13 is a view showing an example of graphic data created by a conventional CAD / CAM device.

FIG. 14 is an enlarged view of the vicinity of the intersection of the long hole element 5B and the long hole element 5C in FIG. 9;

FIG. 15 is an enlarged view of the vicinity of the intersection of the long hole element 5D and the long hole element 5E in FIG. 9;

16 is an enlarged view of the vicinity of the intersection between the long hole element 5F and the long hole element 5B in FIG. 9;

FIG. 17 is an exemplary diagram of graphic data created by a conventional CAD / CAM device.

FIG. 18 is a view showing an example of graphic data created based on an end point coordinate position priority method.

[Explanation of symbols]

10 CAD / CAM device, 1 NC data acquisition unit 1,
2 graphic data creation unit, 3 display unit, 4 NC data creation unit, 5 operation method storage unit, 6 operation method selection unit, 7
bus.

Claims (7)

[Claims] In a data conversion method for converting NC data into graphic data based on a set calculation method, a plurality of calculation methods are prepared, and an operator selects one or a plurality of calculation methods from among these calculation methods. And selecting the calculation method selected by the operator as the calculation method used for converting the NC data. 2. A data conversion method for converting NC data into graphic data based on a set calculation method, wherein a plurality of calculation methods are prepared, and one or more calculation methods are determined based on predetermined criteria. A data conversion method, which is set as an operation method used for converting NC data. 3. The method according to claim 1, wherein the calculation method includes a center coordinate position priority method, an end point coordinate position priority method, a horizontal and vertical line coordinate position priority method, a radial dimension priority method, and an angle dimension priority method. Or the data conversion method according to 2. 4. A CAD / CAM device for converting NC data into graphic data based on a set calculation method, wherein a plurality of calculation methods are prepared, and one or more calculation methods are selected from the calculation methods. A CAD / CAM apparatus, comprising: an operation method selection means for selecting, and setting the operation method selected by the operation method selection means as an operation method used for converting NC data. 5. A CAD / CAM device for converting NC data into graphic data based on a set calculation method, wherein a plurality of calculation methods are prepared, and one or more calculation methods are determined based on predetermined criteria. And a calculation method setting means for setting a calculation method as a calculation method used for converting NC data. 6. The method according to claim 4, wherein the calculation method is a center coordinate position priority method, an end point coordinate position priority method, a horizontal and vertical line coordinate position priority method, a radius dimension priority method, and an angle dimension priority method. Or a CAD / CAM device according to 5. 7. A computer-readable recording medium on which a program for causing a computer to execute the data conversion method according to claim 1 is recorded.