JP2001084018A - Three-dimensional cad/cam system and storage medium recording model data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer machining information such as a machining position, a machining type and tolerance by directly using three-dimensional(3D) CAD data without preparing a material shape and a two-dimensional(2D) drawing. SOLUTION: In the three-dimensional(3D) CAD/CAM system for transferring 3D CAD data prepared by a 3D CAD device 20 to a 3D CAM device 21 and allowing the CAM device 21 to prepare a machining path for producing a product by machining a work on the basis of the 3D CAD data, the device 20 is provided with a color attribute adding part 32 for adding a color attribute to a part requiring the processing of a cast material in the 3D CAD data and the device 21 is provided with a recognition part 37 for recognizing the part requiring the processing of the cast material on the basis of the color attribute added to the 3D CAD data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional CAD / CAM (Computer Aided Manufacturing) for creating NC data for processing a workpiece from three-dimensional CAD (Computer Aided Design) data created by a three-dimensional CAD apparatus. )
A method of transferring three-dimensional CAD / CAM data between a three-dimensional CAD device and a CAM device, a three-dimensional CAD device, a three-dimensional CAM device, a three-dimensional CAD /
CAM system, NC processing system to which the three-dimensional CAD / CAM system is applied, and three-dimensional CAD / CAM
The present invention relates to a storage medium storing a data transfer method program.

[0002]

2. Description of the Related Art Three-dimensional C is used in a process from a product design in a manufacturing process to a process of molding a cast part, for example.
AD / CAM system is used. Briefly describing the process of this product development, first, as shown in FIG.
In the design department, a product is designed using the three-dimensional CAD device 1, and a three-dimensional CAD model is created. The three-dimensional CAD data of this three-dimensional CAD model is IGE
The data is converted by a standardized data exchange format 2 such as S or STEP and sent to the three-dimensional CAM device 3.

At the same time, a designer uses a three-dimensional CAD apparatus 1 to draw a product shape 2 in a two-dimensional drawing (design drawing).
5 and the dimensions, machining type,
Information 6 such as surface roughness is entered, and a two-dimensional drawing 7 is created.

On the other hand, the three-dimensional CAM device 3 has a three-dimensional CA
The three-dimensional CAD data is received from the D device 1, and information 8 such as a processing location, a processing type, and a surface roughness is obtained by referring to the two-dimensional drawing 7 in an interactive manner with a manufacturing engineer with respect to the three-dimensional CAD data. It is additionally input. The three-dimensional CAM device obtains development data of a product from three-dimensional CAD data to which information 8 such as a processing location, a processing type, and surface roughness is added, and based on the development data, a tool in the NC processing machine 9 such as Cutter path (machining path)
10 is calculated, and the NC processing machine 9 is calculated from the cutter path 10.
Is operated to create the NC data 11 for performing the NC processing.

In the three-dimensional CAD / CAM system,
Converts three-dimensional CAD data according to a data exchange format 2 such as IGES or STEP and converts the three-dimensional CAD data into a three-dimensional CAD device 1
To the three-dimensional CAM device 3, but in addition to this, the material shape 12 and the product shape 4 are transferred as shown in FIG. To automatically recognize the processing location 13
Some have functions that have a way to do it. “AB” indicates that the element shape B is cut off from the basic shape A. Model data indicating the element shape may be called a feature.

[0006]

However, in IGES or STEP, which is the current data conversion standard, the shape of a product is converted to three-dimensional CAD data by a three-dimensional CAM device.
However, information such as a processing type and a dimensional tolerance indicating what kind of processing is performed cannot be transferred to the three-dimensional CAM device 3.

For this reason, after the designer designs the product shape 4 and the part shape using the three-dimensional CAD device 1, the designer converts the three-dimensional CAD data into a two-dimensional drawing 5, Work must be done to enter the dimensions, surface roughness, and tolerances in the form. In addition, the processing location and the processing type are read by the manufacturing engineer with reference to the two-dimensional drawing 7 in which the dimensions, surface roughness, and tolerances are entered, and the three-dimensional CAM device 3 is operated in an interactive manner to execute the processing path 10. Work to create is required.

On the other hand, in order to apply the method of calculating the material shape-product shape in the three-dimensional CAM device 3, the material shape 12 also needs to be created by the three-dimensional CAD device 1. However, it is good if the material shape 12 can be defined by a block such as die machining. However, in the case of a product having a complicated shape such as a casting, for example, it takes a lot of time to create the material shape 12. It takes man-hours.

In this method, since information such as a machining type and a tolerance cannot be obtained from a machining location extracted from the three-dimensional CAD data, the machining type automatic determination software and the two-dimensional drawing 7 are referred to as described above. Then, operations such as adding processing information are required.

[0010] Therefore, the present invention provides a three-dimensional CAD / data processing system capable of passing processing information such as a processing location, a processing type, and a tolerance by directly using three-dimensional CAD data without creating a material shape or a two-dimensional drawing. An object of the present invention is to provide a CAM data delivery method.

Further, the present invention provides a three-dimensional CA capable of adding processing information such as a processing part, a processing type, and a tolerance to three-dimensional CAD data without creating a material shape or a two-dimensional drawing.
It is intended to provide a D device.

Further, the present invention provides a three-dimensional CAD system.
It is an object of the present invention to provide a three-dimensional CAM device capable of extracting processing information such as a processing location, a processing type, and a tolerance from the dimensional CAD data.

Further, the present invention adds processing information such as a processing position, a processing type, and a tolerance to three-dimensional CAD data without creating a material shape or a two-dimensional drawing.
It is an object of the present invention to provide a three-dimensional CAD / CAM system capable of extracting processing information such as a processing location, a processing type, and a tolerance from AD data.

Further, the present invention adds processing information such as a processing location, a processing type, and a tolerance to three-dimensional CAD data without creating a material shape or a two-dimensional drawing.
An object of the present invention is to provide an NC machining system that performs an NC machining by applying a three-dimensional CAD / CAM system capable of extracting machining information such as a machining location, a machining type, and a tolerance from AD data.

Further, the present invention provides a three-dimensional CAD capable of passing machining information such as a machining location, a machining type and a tolerance by directly using three-dimensional CAD data without creating a material shape or a two-dimensional drawing. It is an object of the present invention to provide a storage medium storing a program for a / CAM data transfer method.

[0016]

Accordingly, a first aspect of the present invention relates to a method in which a color attribute is related to a manufacturing process in which a surface to which the attribute is given or a specification of the surface. A storage medium in which the model data is stored.

According to a second aspect of the present invention, the attribute of the line is stored with model data relating to a manufacturing process for applying the surface to which the attribute is applied or the specification of the surface. Storage medium.

Further, the third invention comprises a step of giving a color attribute to at least one surface of the model data in association with a manufacturing process received by the surface. Manufacturing method.

In a fourth aspect based on the third aspect, the manufacturing process is a processing bill.

Further, a fifth invention is characterized in that, in the third invention, the manufacturing process is a measurement bill.

Further, a sixth invention provides a method for producing model data, comprising a step of giving a color attribute to at least one surface of the model data in association with the specification of the surface. It is.

In a seventh aspect based on the sixth aspect, the specification is a value relating to a tolerance.

In an eighth aspect based on the sixth aspect, the specification is a value relating to surface roughness.

Further, the ninth invention includes a step of giving a line attribute to at least one surface of the model data in association with a manufacturing process received by the surface or a specification of the surface. A method for producing model data as a feature.

Further, according to a tenth aspect of the present invention, the attribute of a color or a line stores model data given in association with a manufacturing process in which a surface to which the attribute is given or a specification of the surface. A storage medium characterized by the above.

Furthermore, an eleventh invention is characterized in that at least one surface of the model data to be generated is given a color or line attribute associated with a manufacturing process received by the surface or a specification of the surface. 3D CAD apparatus.

According to a twelfth aspect, in the eleventh aspect, when displaying model data having a color attribute given in association with a manufacturing process to be performed on the surface or a specification of the surface, A program is provided which enables switching between a case where the surface is colored with the color and displayed, and a case where the surface is displayed without being colored with the color.

Further, according to a thirteenth aspect, at least one surface of the model data to be generated is processed according to a manufacturing process applied to the surface or the specification of the surface.
A storage medium comprising a program for giving color or line attributes.

Further, a fourteenth aspect of the present invention relates to an NC program which recognizes, from the attributes of colors or lines included in input model data, a manufacturing process to be applied to a surface to which the attribute is given or a specification of the surface. Generating 3
Dimensional CAM device.

Further, a fifteenth aspect of the present invention is characterized in that the program has a program for recognizing a manufacturing process or a specification of the surface given the attribute from the attribute of the color or the line included in the model data. Storage medium.

A sixteenth aspect of the present invention is a recording medium in which color or line attributes are stored in association with manufacturing processes or specifications.

Further, a seventeenth aspect of the present invention relates to a process for manufacturing a surface or a model data having a color attribute given in association with the specification of the surface. A recording medium characterized by comprising a program that enables switching between a case of displaying by coloring and a case of displaying without coloring the surface with a color.

Further, an eighteenth invention is a method of manufacturing a product indicated by model data generated by a CAD apparatus, wherein the method is associated with at least one of a manufacturing process for a surface of the product and a specification of the surface. A step of generating model data having a color attribute.

Further, a nineteenth aspect of the present invention relates to a method of manufacturing a product indicated by model data generated by a CAD device, wherein the method is associated with at least one of a manufacturing process for the surface of the product and a specification of the surface. A step of generating model data having a line attribute.

Further, a twentieth invention is a method of manufacturing a product indicated by model data generated by a CAD device, wherein the method is associated with at least one of a manufacturing process for the surface of the product and a specification of the surface. A step of generating model data in which a hole shape is added to the surface.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

FIG. 1 is an overall configuration diagram of an NC machining system to which a three-dimensional CAD / CAM system is applied.

3D CAD device 20, 3D CAM device 21, CAD / CAM file server computer 2
2. The data transfer system (DNC) 23 and the NC processing machine 24 are mutually connected via a communication line 25.
CAD / CAM file server computer 2
2 is provided with a processing database 26 and a color contrast storage unit 27 as shown in FIG.

FIG. 3 shows a three-dimensional CAD apparatus 20 and a three-dimensional C
FIG. 2 is a functional block diagram of an AM device 21.

The three-dimensional CAD device 20 is used for three-dimensional C
The AD model is designed while being modeled by solid data, and the solid model data of the three-dimensional CAD model is converted by a data exchange format such as IGES or STEP and sent to the three-dimensional CAM device 21.
It has the functions of a three-dimensional CAD model creation unit 30 and a color attribute addition unit 32.

The three-dimensional CAD model creation unit 30
Is a solid modeler dedicated to product design in three dimensions (so
It has a function to design a product while modeling a three-dimensional CAD model in an interactive manner with an operator using a lid modeler.

The three-dimensional CAD model of the product under design is displayed on the display or other CA together with the dialogue with the operator.
This is displayed on the D display unit 31.

The color attribute adding section 32 has a function of selecting and adding a color attribute to the surface of the three-dimensional CAD data created by the three-dimensional CAD model creating section 30.
That is, the three-dimensional CAD data is composed of a plurality of surfaces, each of which has an attribute. This attribute is, for example, information on the shape, component color, line, and surface.
The color attribute adding unit 32 pays attention to the color among these attributes,
3D C created by the 3D CAD model creation unit 30
For the AD data, based on the color contrast information stored in the color contrast storage unit 27, NC processing is performed on the workpiece as a part of the three-dimensional CAD data that requires processing. It has a function of selecting and adding a color attribute, for example, blue, green, a die, or the like, to one or both of a location to be processed, for example, a surface to be processed, a hole to be processed, and a location to measure processing accuracy. Although the color attribute is used as the attribute, it goes without saying that the color attribute does not change the shape of the surface forming the three-dimensional CAD data.

The color attribute adding section 32 stores the color contrast storage section 2.
In addition to judging the location of the NC processing based on the color attribute based on the color contrast information stored in No. 7, each data of the processing type, surface roughness, and tolerance of at least the location where the NC processing is performed based on the color attribute It has the function of classifying

Here, as shown in FIG. 2, the color contrast storage section 27 stores a surface, a hole, and the like as a processing type, and determines the degree of surface roughness of the processing surface as Δ, Δ, or “5” [μm].
Rmax] and the like, drill holes, reamed holes, tapped holes, tapered holes, stepped holes, etc. are stored as holes, and the fact that the reamed holes are highly accurate is stored as tolerances. On the other hand, colors, such as blue, green, die-dye, purple, red, yellow, and peach, are stored.

The expression format of the color attribute is not only specified by the text data as described above, but also by HTML.
(Hyper Text Mark-up Langu
By specifying the shading of each of the RGB colors using a numerical value from 00 to FF as in the color specification method in (age), it is also possible to specify a combination of hexadecimal numbers such as '# A079F1'. In this case, since the color itself is also represented by the code, CAD /
Depending on the function of the CAM device, a color conversion table described later may not be a necessary configuration.

The color attribute adding section 32 includes a selection display section 3
3 are provided. This selection display section 33 is a three-dimensional C
It has a function of displaying a menu or an icon for selecting a color attribute on the CAD screen of the CAD display unit 31 of the AD 20. In other words, the menu or icon displays the processing type such as surface processing and hole processing, the level of surface roughness, and the tolerance in separate items, and performs the processing such as surface processing and hole processing by the selection operation by the designer in an interactive manner. Color attributes for types, surface roughness levels, and tolerances are automatically set.

The selection display section 33 displays a three-dimensional C
After the color attribute is added to the AD data, a colored portion on the CAD screen is selected and operated in order to recognize whether or not information such as the processing type, the surface roughness level, the tolerance, and the like are correctly set. And a function of displaying information such as the set processing type, surface roughness level, and tolerance on the CAD screen of the CAD display unit 31.

The color conversion table 34 is for coding each color in order to recognize the color attribute in the three-dimensional CAD apparatus 20. For example, as shown in FIG.
Blue is coded as “2” and green is coded as “3”.

In the program memory 35, a three-dimensional CAD model of a product is modeled and designed.
IGES or STEP for 3D CAD data of D model
Converted by data exchange format 2 such as 3D C
3D CA for performing operation of sending to AM device 21
For the original program of the D device 20 and the three-dimensional CAD data created by the three-dimensional CAD model creation unit 30,
On the basis of the color contrast information stored in the color contrast storage unit 27, a part of the three-dimensional CAD data that requires processing on the workpiece, for example, a place where the workpiece is subjected to NC processing, for example, processing. A color attribute, for example, blue, green, a die, or the like is selectively added to one or both of a surface, a hole to be processed, and a portion for which processing accuracy is measured, and the color stored in the color contrast storage unit 27 is selected. Based on the contrast information,
In addition to the above color attributes, a program for operating the color attribute adding unit 31 for classifying data of at least the machining type, the surface roughness, and the tolerance of the portion where the NC processing is performed is stored.

The three-dimensional CAD apparatus 20 is provided with a normal color display means for coloring each product constituting the three-dimensional CAD data, for example, each component constituting a casting material and displaying the color on a CAD screen, as described above. A color attribute adding unit 32 for adding a color attribute to a portion of the dimensional CAD data that requires processing on a workpiece and displaying the color attribute on a CAD screen, and switching between the normal color output unit and the color attribute adding unit 32 Switching means for displaying on a CAD screen.

On the other hand, the three-dimensional CAM device 21
It has a function of receiving three-dimensional CAD data from the AD device 20 and generating NC data for performing NC processing by operating the NC processing machine 24 from the three-dimensional CAD data. It has 37 functions.

The expansion processing unit 36 is a three-dimensional CAD device 20
The product has a function of expanding the product from data obtained by converting the three-dimensional CAD data from the data according to a data exchange format such as IGES or STEP, obtaining the expanded data, and displaying the expanded data on the CAM screen of the CAM display unit 38. are doing.

The recognition unit 37 determines the color attribute added by the three-dimensional CAD device 20 from the expanded data obtained by the expansion processing unit 36, and identifies this color attribute to the CA of the CAM display unit 38.
Colors are displayed in addition to the developed data displayed on the M screen, and a portion requiring processing on the workpiece, for example, a place where the workpiece is subjected to NC processing, for example, a surface to be processed or processing is performed. It has a function of making a manufacturing engineer recognize one or both of the hole and the place where the processing accuracy is measured by color display such as blue, green, and die.

The recognition unit 37 determines the color attribute added by the three-dimensional CAD device 20 from the expanded data obtained by the expansion processing unit 36 and converts the color attribute into the color contrast information stored in the color contrast storage unit 27. Based on, for example, NC
It has a function of recognizing at least one of a processing location, for example, a processing surface, a processing hole, or a processing accuracy measurement location, a processing type, a surface roughness, and a tolerance.

The color conversion table 39 is added to the three-dimensional CAD data as shown in FIG. 5 when judging a color from the color attribute added to the three-dimensional CAD data received from the three-dimensional CAD device 20. Information for converting a code into a color attribute is stored. For example, by setting “1” to green, “2” to blue, “3” to red, etc.,
The color attribute received from the D device 20 converts red “1” into “3” and recognizes red.

The three-dimensional CAM device 21 is provided with a normal color display means for coloring each component constituting a product represented by the three-dimensional CAD data and displaying the same on a CAM screen, as described above. A color display unit for adding a color attribute to a portion of the workpiece requiring processing and displaying the result on the CAM screen, and a switching unit for switching between the normal color display unit and the color display unit and displaying the result on the CAD screen And

The processing path creating unit 40 includes the development data obtained by the development processing unit 36 and the color attribute added to the development data, for example, the location where the NC processing is performed on the workpiece, such as the surface to be processed and the processing. The hole to be processed, or one or both of the locations where the processing accuracy is to be measured, the processing type, the surface roughness, and the tolerance at the location to be processed or the location where the measurement is to be performed. It has a function of calculating the path (machining path) of a tool, for example, a cutter in the NC processing machine 24.

The NC data creation unit 41 receives the machining path created by the machining path creation unit 40, and operates the NC machine 24 from this machining path to perform NC machining.
It has a function to create data.

The program memory 42 has a three-dimensional CAD
A program for generating NC data for performing the NC processing by operating the NC processing machine 24 from the data, develops the product from the three-dimensional CAD data, obtains the developed data, and displays the developed data in the CAM display unit 38. The color attribute added by the three-dimensional CAD device 20 is determined from the program for displaying on the CAM screen and the expansion data, and this color attribute is added to the expansion data displayed on the CAM screen of the CAM display unit 38. Of the workpiece that needs to be processed, for example, a place where NC processing is performed on the workpiece, for example, a surface to be processed or a hole to be processed, or a place where measurement of processing accuracy is performed. One or both are blue,
Based on the color contrast information stored in the color contrast storage unit 27, for example, a place where NC processing is performed on a workpiece, for example, a surface to be processed, A program for recognizing at least one of a hole to be machined and / or a place where machining accuracy is measured, a machining type, a surface roughness, and a tolerance is stored.

The CAD / CAM file server computer 22 receives the three-dimensional CA from the three-dimensional CAD device 20.
3D CAM device 2 for receiving and storing D data
3D CAD stored after receiving read instruction from 1
It has a function of reading data and passing it to the three-dimensional CAM device 21.

The CAD / CAM file server computer 22 stores the NC data from the three-dimensional CAM device 21 in the processing database 26, and receives a read instruction from the data transfer system 23 to process the NC database 2.
6 has a function of reading the NC data stored in the data transfer system 6 and passing it to the data transfer system 23.

The data transfer system 23 has a function of converting the NC data stored in the processing database 26 into a format corresponding to various NC processing machines 24 and transferring the data to the NC processing machine 24.

Next, the operation of the system configured as described above will be described.

The three-dimensional CAD apparatus 20 uses a three-dimensional CAD model creation unit 30 to execute a three-dimensional CA in an interactive manner with a designer using a program dedicated to three-dimensional product design.
A product is designed while modeling a D model, for example, a three-dimensional CAD model of a casting part. During the modeling of the three-dimensional CAD model by dialogue with the designer,
The dimensional CAD model is displayed on the CAD display section 31 together with the dialogue with the designer as shown in FIG. 6 based on the shape data of the casting part.

When a designer inputs an instruction for a place to perform NC processing on a workpiece, for example, a processing surface, a hole to be processed, or a place to measure the processing accuracy, the color attribute adding unit is operated. Numeral 32 indicates that the three-dimensional CAD data created by the three-dimensional CAD model creation unit 30 is subjected to NC processing on the workpiece based on the color contrast information stored in the color contrast storage unit 27 shown in FIG. A color attribute, for example, blue, green, a die, or the like is selected and added to a location to be processed, for example, a surface to be processed, a hole to be processed, or a location to measure the processing accuracy.

In this case, when the data of the processing type, the surface roughness, and the tolerance of the place where the NC processing is performed is input by the designer, the color attribute adding unit 32 stores the data in the color contrast storage unit 27 shown in FIG. Based on the color contrast information, a color attribute corresponding to the processing type, surface roughness, and tolerance data of the location where the NC processing is performed is added to the processing location.

FIG. 7 shows an example of a three-dimensional CAD model to which color attributes have been added. In this three-dimensional CAD model, C
The portions 1 to C4 are displayed in green, the processing type is a plane, and △△ represents the degree of surface roughness. The portion C5 is displayed in blue, the processing type is a plane, and △ represents the degree of surface roughness. The location C6 is displayed in die-dye color, the processing type is a hole, and the type of hole represents a drilled hole. C7 to C8 are displayed in red, the processing type is a hole, and the type of the hole represents a tapped hole.

The selection of the color attribute is performed as follows. CAD by the selection display unit 33 of the color attribute addition unit 32
On the CAD screen of the display unit 31, a menu or an icon for selecting a color attribute is displayed, and a processing type such as a surface processing and a hole processing, a level of surface roughness, and a tolerance are displayed in separate items. The type of processing such as surface processing and hole processing, as well as the level of surface roughness and color attributes with respect to tolerances are automatically set by a selection operation in an interactive manner by a designer.

After the color attribute is added to the three-dimensional CAD data, the selection display section 33 recognizes whether or not the information such as the processing type, the surface roughness level, the tolerance, etc., has been correctly set. When a colored part on the CAD screen is selected and operated by the designer, information such as the set machining type, surface roughness level, and tolerance is displayed on the CAD display unit 31 by CAD.
Display on the screen.

In the three-dimensional CAD apparatus 20, the color attributes are coded and recognized as "1" for red, "2" for blue, "3" for green, etc. in accordance with the color conversion table 34 shown in FIG. ing.

Next, the three-dimensional CAD apparatus 20 converts the three-dimensional CAD model on which the modeling and the addition of the color attribute have been completed, into
The data is converted by a data exchange format such as IGES or STEP and sent to the CAD / CAM file server computer 22.

The CAD / CAM file server computer 22 receives the three-dimensional CA from the three-dimensional CAD device 20.
Receive and store D data.

On the other hand, the CAD /
When a command to read three-dimensional CAD data is input to the CAM file server computer 22, this CAD
The / CAM file server computer 22 reads out the stored three-dimensional CAD data converted by the data exchange format 2 such as IGES or STEP and transfers the read three-dimensional CAD data to the three-dimensional CAM device 21.

The expansion processing unit 3 of the three-dimensional CAM device 21
6 is the IGE transmitted from the three-dimensional CAD device 20
Receives three-dimensional CAD data converted according to data exchange format 2 such as S or STEP, and receives three-dimensional CAM
The data is converted into three-dimensional CAD data that can be used by the device 21.
Thereafter, the product is developed from the three-dimensional CAD data to obtain the developed data, and the developed data is displayed on the CAM screen of the CAM display unit 38.

Next, the recognition unit 37 determines the color attribute added by the three-dimensional CAD device 20 from the expanded data obtained by the expansion processing unit 36, and displays this color attribute on the CAM display unit 38.
In addition to the development data displayed on the CAM screen, the color is displayed in addition to any of the places where the NC processing is performed on the workpiece, for example, the processing surface, the processing hole, or the processing accuracy measurement. Either or both are recognized by the manufacturing technician by color display such as blue, green, die-die, and the like.

That is, the CAM of the three-dimensional CAM device 21
The display section 38 has green portions C1 to C as shown in FIG.
4, blue spot C5, pink spot C6, red spot C7
To C8 are displayed. By this color display, the manufacturing technician recognizes the green portions C1 to C4 as the processing type and the surface roughness △△, and the blue portions C5 as the processing type as the surface.
Recognizing the surface roughness 、, the pink type C6 is recognized as the processing type is a hole, the stepped hole is recognized as the type of hole, and the red color C7 is recognized.
The machining type is a hole, and a tapped hole is recognized as a hole type.

When the three-dimensional CAM device 21 determines a color from the color attribute added to the three-dimensional CAD data received from the three-dimensional CAD device 20, the color is stored in the color conversion table 39 shown in FIG. For example, “1” is set to green, “2” is set to blue, “3” is set to red, etc., based on the information of the color attribute conversion, and red “1” is set to the color attribute received from the three-dimensional CAD device 20. Convert to "3" and recognize red.

As described above, the three-dimensional CAM device 21 displays the green spots C1 to C4, the blue spot C5, the pink spot C6, and the red spots C7 to C8 on the CAM display unit 38. Instead of reading the two-dimensional drawing and recognizing the processing location and the processing type, the user automatically recognizes the processing location and the processing type from the location of the color display. In addition, the manufacturing engineer can recognize the processing type, the surface roughness, and the tolerance at the location where processing or measurement is performed from the color display.

After the processing location is determined, the processing path creation unit 40 receives the instruction of the manufacturing engineer and performs the NC processing based on the development data obtained by the development processing unit 36 and the color attribute added to the development data. The path (machining path) of a tool, for example, a cutter in the machine 24 is calculated.

Next, the NC data creating section 41 receives the machining path created by the machining path creating section 40, and creates the NC data for performing the NC machining by operating the NC machine 24 from the machining path. .

The NC data created by the three-dimensional CAM device 21 is sent to the CAD / CAM file server computer 22 and stored in the processing database 26 of the CAD / CAM file server computer 22.

Then, the data transfer system 23 sends the CA
When a read instruction is sent to the D / CAM file server computer 22, the CAD / CAM file server computer 22 reads the NC data stored in the processing database 26 and passes it to the data transfer system 23.

The data transfer system 23 converts the NC data stored in the processing database 26 into a format corresponding to various NC processing machines 24, and
Transfer to the C processing machine 24. This NC processing machine 24 is an NC processing machine.
An NC process is performed on a workpiece, that is, a casting according to the data. In this case, in the NC processing, the green portions C1 to C4 displayed on the CAM display section 38 have a surface processing type of surface roughness △△, the blue portions C5 have a surface processing type of surface roughness △, and a pink color. It goes without saying that the location C6 is a hole processing type and the type of the hole is a stepped hole, and the red locations C7 and C8 are a hole processing type and the type of the hole is a tap hole.

As described above, in one embodiment,
The three-dimensional CAD device 20 is provided with a color attribute adding unit 32 for adding a color attribute to a portion of the three-dimensional CAD data that requires processing for a casting, and the three-dimensional CAM device 21 is added to the three-dimensional CAD data. Since there is provided a recognition unit 37 for recognizing a portion of the casting that requires processing based on the color attribute, the processing type and the surface are not used in the current data exchange format such as IGES or STEP which is an exchange standard of three-dimensional CAD data. It was inadequate because information such as roughness and tolerance could not be passed, but by adding color attributes, it was troublesome to create material shapes and two-dimensional drawings as before. Instead, using a three-dimensional CAD data directly and adding a color attribute to measure the location where NC processing is performed on the casting, such as the surface to be processed, the hole to be processed, or the processing accuracy Can pass Tokoro the three-dimensional CAM apparatus 21.

Further, by adding the color attribute, processing information such as the processing type and the tolerance of the processing location can be passed to the three-dimensional CAM device 21 without being limited to the processing location, and the processing information can be transferred to the two-dimensional drawing as in the related art. This eliminates the need to enter processing information such as processing type and tolerance.

The color attribute is the CA of the three-dimensional CAM device 21.
Since the color is displayed on the M display unit 38, the place where the NC processing is performed on the casting material, for example, the surface to be processed, the hole to be processed, or the place where the processing accuracy is measured can be recognized at a glance by the manufacturing operator.

The selection of the color attribute can be set in the CAD display unit 3.
The type of surface machining, hole machining, surface roughness level, and tolerance are displayed as separate items on the CAD screen using menus or icons, so that these items can be selected by the designer in an interactive manner. Processing attributes such as surface processing and hole processing, as well as color attributes for surface roughness levels and tolerances can be automatically set.

In the selection display section 33, the colored section on the CAD screen is selected and operated by the designer in order to recognize whether or not information such as the processing type, the surface roughness level, the tolerance, etc., has been correctly set. Then, the information such as the set processing type, the surface roughness level, and the tolerance is set in the CAD
Since the information is displayed on the AD screen, information such as the set processing type, surface roughness level, and tolerance can be confirmed.

Therefore, the three-dimensional CAM device 21 reads the color attribute added to the three-dimensional CAD data, and performs, for example, NC processing on the casting material based on the color contrast information stored in the color contrast storage unit 27. For example, a processing type, a surface roughness, and a tolerance of a part to be processed, for example, a surface to be processed, a hole to be processed, or a part to measure processing accuracy can be automatically recognized. The basic dimensions of the location to be measured can be extracted from the three-dimensional CAD data.

However, when the designer operates the three-dimensional CAD device 20
After designing a product or part by using the method described above, there is no need to create a two-dimensional drawing and add information such as dimensions, surface roughness, and tolerances to the two-dimensional drawing, thereby greatly reducing the number of design steps.

Also, on the three-dimensional CAM device 21 side, the manufacturing engineer reads the processing location and processing type from the two-dimensional drawing in which the dimensions, surface roughness, and tolerance are entered, and operates the three-dimensional CAM device 21. This eliminates the need to create a machining path in an interactive manner.

Further, it is possible to prevent a manufacturing engineer from overlooking a processing portion and erroneously determining a processing type.

In addition, there is no need to use a three-dimensional CAD apparatus to create a material shape, which is necessary when applying a method of automatically recognizing a processing portion in a material shape-product shape method.

Further, when three-dimensional CAD data representing a three-dimensional model of a product such as a casting part is converted according to a data conversion format and passed to the three-dimensional CAM device 21, the three-dimensional CAD
Program memories 35 and 42 which store a program for adding a color attribute to a part of the AD data that requires processing for a cast part can be provided.

The three-dimensional CAD device 20 and the three-dimensional CA
The M device 21 displays a CAD screen or a CAM screen by adding a color to each product constituting the product represented by the three-dimensional CAD data, for example, each component constituting the casting material, or a portion requiring processing on the casting material. Since color attributes are added and displayed on the CAD screen or CAM screen, and these displays are simultaneously or switched, in addition to the color display for each component constituting the casting material, processing such as precision processing and precision measurement is performed. The location can be clearly displayed in color to make it visually easy to see.

The present invention is not limited to the above embodiment, but may be modified as follows.

For example, as shown in FIG. 8, the three-dimensional CAM device 21 may be provided with a control data generator 43. The control data creation unit 43 recognizes a measurement location and a tolerance of the processing accuracy based on the color attribute added to the three-dimensional CAD data, and generates control data for the three-dimensional measuring machine based on the measurement location and the tolerance. It has the function of creating automatically.

Further, a color may be set according to the measurement accuracy, so that a manufacturing engineer can grasp the location to be measured and the tolerance of the location without a two-dimensional drawing.

Further, in the above embodiment, the three-dimensional C
As means for transferring the processing information from the AD device 20 to the three-dimensional CAM device 21, attention is paid to the color among the attributes of a plurality of surfaces constituting the three-dimensional CAD data. For example, attention may be paid to the attribute of the line. That is, a line attribute may be added to a portion that is subjected to a process used for manufacturing a workpiece represented by the three-dimensional CAD data. This line attribute indicates, for example, the thickness and type of the line (solid line, broken line, dashed line, etc.). In addition, instead of the color attribute and the line attribute, a hole shape having minute hole diameter information that is not recognized as being actually machined on a surface or hole to be machined (for example,
(About 0.001 mm) may be separately added, and the processing information may be determined based on the diameter of the hole. In this case, for example, table data in which the value of the third decimal place or less is associated with the processing received by the surface is used. This hole shape information (hole shape) is interpreted in the CAM device, and then subjected to suppression processing and eliminated (rounded).

Specifically, in the case of the thickness and type of the line, for example, a figure surrounded by a line width of 2 mm is a processed portion, the surface is a surface roughness な ら ば, and the hole is a tapped hole. Further, if a small hole shape that is not actually processed is added to a surface or a hole to be processed, for example, the diameter of the fine hole is 0.001 mm.
In the case of, the surface of the surface roughness 、, the diameter of the micro holes is 0.002m
When m, the surface of the surface roughness 、, the diameter of the micro holes is 0.00
When it is 15 mm, tapping is performed with a hole.

Here, the disappearance of the hole diameter information after the suppression processing will be specifically described. Assuming that the hole diameter information is 0.00215 mm and the hole diameter information is added to the third decimal place or less. , The hole itself will disappear. If the hole diameter information is 10.00215 mm and the hole diameter information is added to the third decimal place or less, 10.00215 mm
mm.

As described in detail above, according to the present invention, processing information such as a processing location, a processing type, and a tolerance is directly used without creating a material shape or a two-dimensional drawing, using three-dimensional CAD data. 3D CAD / CA that can do
An M data delivery method can be provided.

Further, according to the present invention, it is possible to provide a three-dimensional CAD apparatus capable of adding processing information such as a processing part, a processing type, and a tolerance to three-dimensional CAD data without creating a material shape or a two-dimensional drawing. And

Further, according to the present invention, a processing location and a processing type are obtained from three-dimensional CAD data from a three-dimensional CAD apparatus.
It is possible to provide a three-dimensional CAM device capable of extracting processing information such as tolerance.

Further, according to the present invention, processing information such as a processing location, a processing type, and a tolerance is added to three-dimensional CAD data without creating a material shape or a two-dimensional drawing.
It is possible to provide a three-dimensional CAD / CAM system capable of extracting processing information such as a processing location, a processing type, and a tolerance from the dimensional CAD data.

According to the present invention, processing information such as a processing position, a processing type, and a tolerance is added to three-dimensional CAD data without creating a material shape or a two-dimensional drawing.
An NC machining system for performing NC machining by applying a three-dimensional CAD / CAM system that can extract machining information such as machining locations, machining types, and tolerances from dimensional CAD data can be provided.

Further, according to the present invention, processing information such as a processing location, a processing type, and a tolerance can be transferred directly using three-dimensional CAD data without creating a material shape or a two-dimensional drawing. It is possible to provide a storage medium that stores a program for a method of transferring dimensional CAD / CAM data. The storage medium in the present invention is a magnetic disk,
Flexible disk, hard disk, optical disk,
Any means that can hold software such as magneto-optical disks, semiconductor memories, or electromagnetic waves modulated irrespective of analog or digital methods, as well as programs or data structures in a computer-readable state It is enough.

The computer according to the present invention reads out software such as a program or a data structure stored in a storage medium, and selectively executes physical processes such as calculation, display, and storage based on the read result. Is a device configured to be able to execute. This device does not need to be housed in one housing, and may be configured to be able to execute processes in cooperation with individual devices that are spatially separated. Absent.

As described above, in the above embodiment, when an article is manufactured, the design is performed by a 3D-CAD apparatus, and the model data generated by the design is processed by the 3D-CAM apparatus. The processing is performed to determine the cutter path of the tool or the allocation of the mold, and the like, and is made into an NC (Numerical Control) program. Using the NC program, the NC processing apparatus is driven to perform processing on the work, and The surface properties of the processed workpiece are measured. In this series of manufacturing processes, in particular, 3D-CAD
When data of a solid model is transferred to a D-CAM device, the processing or specifications intended by the designer of the solid model can be directly transferred to the CAM device side. Will be more easily reflected in the finished product. In addition, rapid process design is possible.

[0111]

As described above, according to the present invention, the coordination between the product design and the process design is facilitated, so that the work can be made more efficient.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an NC processing system to which an embodiment of a three-dimensional CAD / CAM system according to the present invention is applied.

FIG. 2 is a schematic diagram of a color contrast storage unit in the NC processing system.

FIG. 3 shows three-dimensional CAD / C in the NC processing system.
FIG. 2 is a functional block diagram of the AM device.

FIG. 4 is a schematic diagram of a color conversion table of a three-dimensional CAD device in the NC processing system.

FIG. 5 is a schematic diagram of a color conversion table of a three-dimensional CAM device in the NC processing system.

FIG. 6 is a schematic diagram of a three-dimensional CAD model created by a three-dimensional CAD device in the NC processing system.

FIG. 7 shows a three-dimensional CAD / C in the NC processing system.
3D CAD with color attribute added to AM device
FIG.

FIG. 8 is a functional block diagram showing a modification of the NC processing system.

FIG. 9 is a diagram for explaining the operation of a conventional three-dimensional CAD / CAM system.

FIG. 10 is a diagram for explaining the operation of a conventional three-dimensional CAD / CAM system.

[Explanation of symbols]

 20: 3D CAD device, 21: 3D CAM device, 22: CAD / CAM file server computer, 23: Data transfer system (DNC), 24: NC processing machine, 25: Communication line, 26: Processing database, 27: Color contrast storage section, 30: 3D CAD model creation section, 31: Display section, 32: Color attribute addition section, 33: Selection display section, 34: Color conversion table, 35: Program memory, 36: Expansion processing section, 37 : Recognition unit 38: display unit 39: color conversion table 40: machining path creation unit 41: NC data creation unit 42: program memory

Claims (20)

[Claims] 1. A storage medium characterized by storing model data in which a color attribute is related to a manufacturing process in which a surface to which the attribute is given is applied or a specification of the surface. 2. A storage medium storing model data in which a line attribute is related to a manufacturing process in which a surface to which the attribute is given is applied or a specification of the surface. 3. A method of manufacturing model data, comprising the step of giving a color attribute to at least one surface of the model data in association with a manufacturing process received by the surface. 4. The method according to claim 3, wherein the manufacturing process is a processing bill. 5. The method according to claim 3, wherein the manufacturing process is a measurement bill. 6. A method for manufacturing model data, comprising a step of giving a color attribute to at least one surface of the model data in association with the specification of the surface. 7. The method according to claim 6, wherein the specification is a value related to a tolerance. 8. The method according to claim 6, wherein the specification is a value related to surface roughness. 9. A method for providing at least one surface of model data with a line attribute associated with a manufacturing process received by the surface or a specification of the surface. Production method. 10. A storage, characterized in that the attribute of a color or a line stores model data given in association with a manufacturing process in which a surface to which the attribute is given or a specification of the surface. Medium. 11. A three-dimensional CAD apparatus characterized in that at least one surface of model data to be generated is given a color or line attribute associated with a manufacturing process received by the surface or a specification of the surface. . 12. When displaying model data having an attribute of a color given in association with a manufacturing process performed on a surface or a specification of the surface, the surface is colored and displayed by the color. 12. The three-dimensional CAD apparatus according to claim 11, further comprising a program that allows the user to switch between displaying and displaying the surface without coloring the surface. 13. A program for giving a color or a line attribute to at least one surface of model data to be generated in accordance with a manufacturing process for applying the surface or a specification of the surface. Characteristic storage medium. 14. An NC program is generated by recognizing a manufacturing process or a specification of a surface to which the attribute is given from a color or a line attribute of the input model data, and generating an NC program. 3D CAM device. 15. A storage medium comprising a program for recognizing a manufacturing process or a specification of a surface to which the attribute is given from a color or line attribute of the model data. 16. A recording medium in which color or line attributes are stored in association with manufacturing processes or specifications. 17. When displaying model data having an attribute of a color given in association with a manufacturing process performed on a surface or a specification of the surface, the surface is colored and displayed by the color. And a program for switching between displaying the surface without coloring it with a color. 18. A method for manufacturing a product indicated by model data generated by a CAD apparatus, the model data having a color attribute associated with at least one of a manufacturing process for a surface of the product and a specification of the surface. A method for producing a product, comprising: 19. A method of manufacturing a product indicated by model data generated by a CAD apparatus, wherein the model data has a line attribute associated with at least one of a manufacturing process for the surface of the product and a specification of the surface. A method for producing a product, comprising: 20. A method of manufacturing a product indicated by model data generated by a CAD apparatus, wherein a hole shape associated with at least one of a manufacturing process for a surface of the product and a specification of the surface is formed on the surface. A method of manufacturing a product, comprising a step of generating the added model data.