JP2993288B2 - Machining program creation device - Google Patents

Abstract

PURPOSE:To provide an easy-to-use drawing preparation device that can reduce the man-hour required for the plotting of a shape through the output of an NC program and can effectively use the limited capacity of a storage and also to provide a method and a device for preparing a machining program by means of the preceding drawing producing device. CONSTITUTION:A parametric diagram generating means 1 generates a parametric diagram from the shape data, and a size table generating means 6 generates a normal size table based on the parametric diagram. Then the value is inputted to the normal size table through an interactive input means 8. Thus a projection chart and a three-dimensional chart are generated, and an NC program is outputted from a machining chart. These processings are all carried out by a computer program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for efficiently creating a machining program using a drawing creating apparatus capable of efficiently drawing a shape by registering and quoting machining shape information and dimensional information corresponding to the shape. it relates to the machining program creating equipment that can.

[0002]

2. Description of the Related Art Hereinafter, a CAD / CAM apparatus will be described as an example of the prior art. FIG. 26 shows a conventional CAD / CA.
FIG. 1 is a configuration diagram showing an M apparatus, in which 1 is a keyboard, 2 is a mouse, and 3 is a tablet, which are input devices for inputting graphic data and character data, respectively. 4
Is a shape generation unit that converts graphic data into an internal storage format,
13 is an internal memory for storing graphic data, 14 is a component library for storing shapes as components or reading them into the internal memory 13, and 19 is a shape analysis unit. Reference numeral 20 denotes an NC data generating unit, and reference numeral 21 denotes N generated by the NC data generating unit.
A C program, 22 is a display unit of a machining path, and 23 is a CRT.

Next, the operation will be described with reference to FIG. First, graphic data is input from input devices such as a keyboard 1, a mouse 2, and a tablet 3. The shape generation unit 4 converts the graphic data into information according to the internal storage format. This information is stored in the internal memory 13. When saving the information stored in the internal memory 13, the information is converted into a file format as a shape part and stored in the part library 14. The shape parts stored in the part library 14 are stored in the internal memory 1 when the NC program is generated.
3 is stored. The shape analysis unit 19 generates machining path information for generating an NC program from the information stored in the internal memory 13. The NC data generation unit 20 outputs an NC program 21 by adding other NC information to the information on the machining path. The processing path display unit 22 converts the processing path information into graphic information,
3 is displayed above.

[0004]

SUMMARY OF THE INVENTION Conventional CAD / CAM
Since the apparatus is configured as described above, when creating graphic data, the user draws all graphics using input devices such as a keyboard 1, a mouse 2, and a tablet 3, or creates a part library 14. A figure registered in advance is called for drawing. When the component library 14 is used, since the component library 14 is fixed data, if the shape is the same and some or all dimensions are different like standard components, it is necessary to register all the shapes in the component library 14. . For that purpose, a large-capacity storage device for the component library 14 is required. Further, it is necessary to add processing conditions for generating an NC program for processing a shape to all the shapes.

As another conventional example, a figure registered in the parts library 14 is a parametric figure.
For example, it is disclosed in JP-A-3-175504. According to the conventional example, when an NC program is created from a parametric diagram registered in the component library 14, the NC program is created by operating as shown in FIG. That is, the parametric diagram registered in the parts library 14 is quoted (step 201), and the operator inputs all the specific dimension values to the change dimensions of the quoted parametric diagram (step 202). Next, the operator instructs a shape for performing processing (step 2).
03), the operator sets machining conditions for the designated shapes one by one (step 2040. Finally, an NC program is generated (step 205). In the conventional example, all the shapes are registered in the part library 14. However, as is clear from FIG. 27, as in the conventional example shown in FIG. 26, it is necessary to input the shape data each time to determine the figure shape, and to set the processing conditions each time. I needed to.

As described above, the conventional method has a problem that the number of man-hours becomes large in proportion to the number of shapes in the process from drawing work of the shape to outputting the NC program for machining. there were.

[0007] The invention aims to obtain a machining program creation equipment that can reduce the number of steps according to the drawing of the shape to the NC program output.

[0008]

According to the present invention, there is provided a machining program creating apparatus for creating a parametric diagram based on features of a machining shape element,
A nominal dimension table generating means for creating a nominal dimension table having input fields for inputting a plurality of shape data corresponding to the parametric diagram generated by the parametric diagram generating means and a plurality of nominal dimension names corresponding to the shape data; Display means for displaying the nominal size table together with the parametric diagram, and input the shape data corresponding to the parametric figure and the nominal dimension name corresponding to the shape data in the input box of the nominal size table displayed on the display means. The input means to be processed and the processing conditions for processing the processing shape generated based on the data related to the parametric diagram input in the data input field of the nominal dimension table correspond to the nominal dimension names in the nominal dimension table. and a machining condition adding means for adding by said input hand
The step is a predetermined position of the shape element displayed on the display means.
By inputting, input the shape data of the above nominal size table
Enter the dimension value of the specified shape element in the field
It was done.

In the machining program creating apparatus according to the present invention, in the above-mentioned machining program creating apparatus, data entry conditions can be set for any item in a data entry column corresponding to a parametric diagram in a nominal dimension table. Condition setting means for setting the data input conditions set by the condition setting means to a numerical value with the input data as fixed dimensions, a condition character with the input data as undetermined dimensions, This is a condition under which a numeric character and a mixed character of conditional characters, which are obtained as semi-undetermined dimensions, can be input.

The machining program creating device according to the present invention, in the machining program creating device, is a three-dimensional diagram generating means for creating a three-dimensional three-dimensional diagram based on data input to a nominal dimension table corresponding to a parametric diagram. It is configured to include:

[0011]

[0012]

[0013]

The parametric diagram generating means according to the present invention comprises:
A parametric diagram is created based on the features of the processing shape element. The nominal size table generating means generates a nominal size table having an input field in which a plurality of shape data corresponding to the parametric diagram generated by the parametric figure generating means and a plurality of nominal size names corresponding to the shape data can be input. Further, the processing condition adding means sets a processing condition for processing a processing shape generated based on the data according to the parametric diagram input in the data input box of the nominal dimension table in a nominal dimension name of the nominal dimension table. Add correspondingly. Also input
The means is a predetermined part of the shape element displayed on the display means.
To enter the shape data of the above nominal size table.
Enter the dimension value of the specified shape element in the force field.

Further, the condition setting means according to the present invention provides a condition for inputting data with respect to an arbitrary item in a data input column corresponding to a parametric diagram in a nominal size table, by setting a numerical value in which the input data is a fixed size. And condition characters that make the input data undetermined dimensions and mixed characters of numerical values and condition characters that make the input data semi-undetermined dimensions can be set as conditions that can be input.

The three-dimensional figure generating means according to the present invention creates a three-dimensional three-dimensional figure based on data input to a nominal size table corresponding to a parametric figure.

[0016]

[0017]

[0018]

[Embodiment 1] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 22, taking a CAD / CAM device as an example. FIG. 1 is a diagram showing a configuration of a CAD / CAM device using the present invention.
Nos. To 4 are the same as in the conventional apparatus. 5 is a parametric diagram generating means for generating a parametric diagram as shown in FIG. 5 from the shape diagram, 6 is a nominal size table generating means for generating a nominal size table as shown in FIG. 7 from the parametric diagram, and 7 is a nominal size table generating Condition setting means for setting predetermined conditions (details will be described later) in the items of the nominal size table in the means 6, 8 is an interactive input means for inputting values in the items of the nominal size table, and 9 is an interactive input means 8. Nominal dimension table editing means for controlling the editing function, 10 is a nominal dimension registering means which is one function of the nominal dimension table editing means 9, 11 is a nominal dimension storage means which is one function of the nominal dimension table editing means 9, and 12 is a nominal dimension storing means. It is an item input unit which is one function of the dimension table editing unit 9.

Reference numeral 13 denotes an internal memory for storing various data; 14, a component library; 15, a nominal size library for storing nominal size information; 16, a projection diagram generating means for generating a projection diagram from the nominal size information; A three-dimensional drawing generating means for generating a three-dimensional drawing from the dimension information; 18, a processing condition adding means for adding processing conditions to the projection view and the three-dimensional drawing generated from the nominal size information; 19, a shape analyzing unit; 20, an NC data generating unit; 21 is a generated NC program, 22 is a machining path display unit, 23 is a CRT as a display device, and 24 is a shape instruction input unit.

Next, the operation of the CAD / CAM device will be described. First, the operation of the parametric diagram generation means 5 for generating a parametric diagram will be described with reference to FIGS. FIG. 2 is a flowchart of the process of the parametric diagram generation means 5, and FIGS. 3 to 5 show the CRT 2 when the operation of each process of the parametric diagram generation is completed.
3 is an example of a graphic displayed in FIG.

In FIG. 2, first, at step 25, graphic data is input from an input device such as the keyboard 1, mouse 2, tablet 3 and the like. Here, FIG. 3 shows an example after the figure data of the hole shape is input as the plan view 3a and the front view 3b. Next, at step 26, a shape element requiring a dimension for the graphic data is defined using the input device. FIG. 4 shows an example in which the dimensions are correctly defined in the front view 4a of the hole shape. Next, in step 27, it is analyzed from the positional relationship between the shape features and the dimension arrangement expressing the shape features whether or not the dimensions are defined with respect to the graphic data. For example, in FIG. 4 in which “60.0” and “14.0” are defined as the hole depth dimension, “46.0” (= 60.0−1) is defined as the hole depth dimension.
4.0) is further defined as “60.0 = 4
In this case, it is determined that the dimension definition of “46.0” is excessive.

Next, at step 28, it is checked whether or not the dimension definition is determined to be excessive or insufficient at step 27. If the dimension definition is excessive or insufficient, error processing is performed at step 29, and if the dimension is correctly defined. , In step 30,
Converts the defined dimension value to a variable as a variable dimension. Here, FIG. 5 shows an example when the dimension value of the hole shape has been converted into a variable, and 5a and 5b are variables indicating the hole diameter.
5c and 5d are variables indicating the depth of the hole shape from the reference surface 5e, and 5f is a variable indicating the chamfer amount. In order to convert the defined dimension value into a variable as a variable dimension, the defined dimension value is selected by an input device such as the mouse 2 and a conversion command is input from the input device and selected by the input device. This is performed by inputting variable names (D1, D2, etc.) corresponding to the dimension values.

Finally, in step 31, the generated parametric diagram is registered as a file in the calling dimension library 15. In this way, the desired number of parametric diagrams are generated and registered by the operator.

Next, a nominal size table is generated from the parametric diagram generated as described above. At this time, the nominal size table generating means 6 operates as shown in FIG.

That is, in FIG. 6, a parametric diagram selected from among the parametric diagrams already registered in the nominal size library 15 as a file in step 41 is read into the internal memory 13 and displayed on the CRT 23.

Next, by performing a predetermined input from the input device, an item column for dimension input is generated in step 42 in accordance with the number of variables of the read parametric diagram. Generate an item column for the nominal dimension name of the parametric diagram. Next, in step 44, a nominal size name is registered in a nominal dimension name item column of the generated nominal dimension table, and a nominal dimension table in which shape data can be registered in a dimension input item column. Here, FIG. 7 shows an example displayed on the CRT 23 when the operation up to step 34 is completed.
a shows a parametric diagram of the hole shape, 7b shows a variable of the nominal dimension name and the variable dimension of the parametric diagram 7a, and 7c shows an area for inputting data corresponding to the nominal dimension name and the variable. .

Finally, at step 45, the registered nominal size table is stored in the nominal size library 15. In this manner, a nominal size table in which data corresponding to the nominal size name and the variable is not input in the area 7c shown in FIG. 7 is generated.

When generating a nominal size table in which data corresponding to the nominal size name and the variable is not input in the area 7c, the nominal size table is stored in the area 7c by the operation of the condition setting means 7. When inputting data corresponding to names and variables, specific numbers, condition characters for setting input conditions (for example, “?”) Set in advance on the system side, and mixed characters of numbers and condition characters (for example, “50? )) Can be input.

That is, if the input values of the shape data corresponding to the nominal dimension names are all numeric, it is determined to be a dimension value and stored as a numeric value in the item column. If the shape data input value corresponding to the nominal dimension name is a condition character for setting an input condition, it is determined to be a condition character for setting an input condition, and stored as a condition character in the item column. Further, if the character is a mixed character of a numeral and a conditional character, it is determined that the character is a mixed character of a numeral and a conditional character, and is stored in the item column as the mixed character.

For example, as shown in the row of the nominal dimension name "M01" in FIG. 9, when numerical values are entered in all of the input items, the nominal dimension name corresponding thereto is recognized as a fixed dimension having a fixed dimension value. You. Also, as shown in the row of the nominal dimension name "M02" in FIG. 9, when a conditional character is entered in part or all of the input items, the corresponding nominal dimension name has an input condition, and the item including the conditional character is included. Are recognized as undetermined dimensions. As shown in the row of the nominal size name “M03” in FIG. 9, when a part or all of the input items are input as a mixture of numbers and conditional characters, the corresponding nominal size name has an input condition, and A variable corresponding to an item with mixed condition characters is recognized as a semi-undecided dimension that can be changed to a numerical value as a dimension value and can be changed as an input condition.

Next, the nominal size table and the graphic data corresponding to the variables are registered in the area 7c of the nominal size table generated by the nominal size table generating means 6, and are already input in the area 7c of the nominal size table. The operation of the interactive input means 8 for editing the graphic data corresponding to the variable will be described with reference to FIGS. When the interactive input means 8 is operated, the condition setting means 7, the nominal size editing means 9, the nominal size registration means 10, the nominal size storage means 11 and the item input means 12 also operate together. , 9,1
The operations of 0, 11, and 12 are also described.

FIGS. 8 and 14 are flow charts showing the main operation of the dialogue input means 8. FIG. 8 shows a table in the nominal size table in which no data corresponding to the nominal size and the variable is entered in the area 7c. FIG. 14 is a flowchart in the case of inputting data corresponding to a dimension name and a variable, and FIG. 14 is a flowchart in the case of editing graphic data corresponding to a variable which has already been input to the area 7c of the nominal dimension table. FIG. 7 is a nominal size table showing a state in which data corresponding to a nominal size name and a variable is not input in the area 7c, and FIG.
Nominal dimension table showing a state in which data corresponding to nominal dimension names and variables are input to c, FIG. 10 is a flowchart showing the operation of nominal dimension editing means 9, FIG. 11 is a flowchart showing the operation of nominal dimension registration means 10, 12 is a flowchart showing the operation of the nominal size storage means 11, FIG. 13 is a flowchart showing the operation of the condition setting means 7 and the item input means 12, and FIG. 15 is a diagram showing a list of nominal dimension tables.

First, a case where data corresponding to nominal size names and variables are input to a nominal size table in which data corresponding to nominal size names and variables are not input to the area 7c will be described. That is, in FIG. 8, in step 51, a nominal size table registered as a file in the nominal size library 15 and in which the data corresponding to the nominal size and the variable are not inputted in the area 7c is read into the internal memory 13.
This reading is performed by the operation of the nominal size editing means 9 and the nominal size storage means 11, and first, FIG.
As shown in FIG. 0, if it is determined in step 63 that the nominal size information (the parametric diagram and the nominal size table corresponding to this parametric diagram) is to be stored in the internal memory 13, the nominal size library is already stored as a file in step 64. The nominal size information selected from the nominal size information registered in No. 15 is read into the internal memory 13. Further, as shown in FIG. 12, the specific storage (step 64) is to determine whether or not the specified file exists in step 64A, and if it is determined that the specified file exists, the process proceeds to step 64A. Read from the nominal size library 15 at 64C. Next, in step 64D, the data in the file format is converted into nominal size information, and finally stored in the internal memory 13 in step 64E. If it is determined in step 64A that the specified file does not exist, error processing is performed (step 64B).
In this way, as a file, the nominal size library 1
5 is read into the internal memory 13 in which no data corresponding to the nominal size and the variable is entered in the area 7c.

Referring again to FIG. 8, at step 52, the nominal dimension table read at step 51 is displayed on the CRT 23 (shown in FIG. 7), and at step 53, the nominal dimension name is entered in the area 7c of the nominal dimension table. Input from an input device. next,
At step 54, data corresponding to the variable is input to the area 7c of the nominal size table. This input is performed by the operation of the condition setting means 7, the nominal size editing means 9 and the item input means 12 described above. As shown in FIG. If so, an item input process is performed in step 66. In the specific item input process (step 66), as shown in FIG. 13, when it is determined in step 66A that the input key is a numerical key, a numerical value is stored in the item column in step 66C. . If it is determined in step 66A that the input key is not a numeric key, the process proceeds to step 66B. If it is determined in step 66B that the input key is a condition character (including a mixed character of a numerical value and a condition character), the condition character is stored in the item column in step 66C.

If it is determined in step 66B that the input key is not a condition character (including a mixed character of a numerical value and a condition character), the process proceeds to step 66D. Then, in step 66D, the input key is an edit key (for example, a delete key,
If it is determined that the input key is a cursor key, the character string in the item of the nominal size table is edited or deleted in step 66E, and it is determined in step 66D that the input key is not an edit key. If so, the process moves to step 66F. If it is determined in step 66F that the input key is the suspend key, in step 66G, the last value of the item in the nominal dimension table (for example, "50?" 50 ”), the process ends, and if it is determined in step 66F that the input key is not the suspend key, the process proceeds to step 66H.

If it is determined in step 66H that the input key is a decision key (for example, a return key), the processing is terminated. If not, it is determined that an invalid key has been entered. Step 66I
Then, the data input by the invalid key is discarded, the process returns to step 66A, and the above process is repeated. As described above, data corresponding to the nominal dimension name and the variable is stored in the nominal dimension table in which the data corresponding to the nominal dimension name and the variable are not input in the area 7c. FIG. 9 shows a nominal size table displayed on the CRT 23 when these processes are completed. In FIG. 9, 7d indicates a cursor,
By moving the cursor 7d to a desired position in the nominal size table, data can be entered in a desired item column.

When these processes have been completed, the operation of the condition setting means 7 determines, if the shape data input values corresponding to the nominal dimension names are all numeric, as described above, the dimension values. Store as a numerical value in the item column. If the shape data input value corresponding to the nominal dimension name is a condition character for setting an input condition, it is determined to be a condition character for setting an input condition, and stored as a condition character in the item column. Further, if the character is a mixed character of a numeral and a conditional character, it is determined that the character is a mixed character of a numeral and a conditional character, and is stored in the item column as the mixed character.

For example, as shown in the row of the nominal dimension name "M01" in FIG. 9, when a numerical value is entered in all of the input items, the nominal dimension name corresponding thereto is recognized as a fixed dimension having a fixed dimension value. You. Also, as shown in the row of the nominal dimension name "M02" in FIG. 9, when a conditional character is entered in part or all of the input items, the corresponding nominal dimension name has an input condition, and the item including the conditional character is included. Are recognized as undetermined dimensions. As shown in the row of the nominal size name “M03” in FIG. 9, when a part or all of the input items are input as a mixture of numbers and conditional characters, the corresponding nominal size name has an input condition, and A variable corresponding to an item with mixed condition characters is recognized as a semi-undecided dimension that can be changed to a numerical value as a dimension value and can be changed as an input condition.

Referring again to FIG. 8, finally, at step 55, the file is written and registered in the nominal size library 15 as a file. Note that this registration is performed by the operation of the nominal size editing means 9 and the nominal size registration means 10. First, as shown in FIG. At 62, the generated nominal size information (the nominal size table in which the parametric diagram and the data are input) is registered as a file in the nominal size library 15. In the concrete registration (step 62), as shown in FIG. 11, in step 62A, the registered name is input to the nominal size information from the input device, and then, in step 62B, the nominal size information is stored in a file. It is converted into a format, and is finally written and registered as a file in the dimension library 15 in step 62C.

Next, the operation of the interactive input means 8 when editing the graphic data corresponding to the variables already input to the area 7c of the nominal size table will be described with reference to FIG. That is, in FIG. 14, in step 71, the nominal size table registered in the nominal size library 15 as a file is read into the internal memory 13. This reading is performed by the operation of the nominal size editing unit 9 and the nominal size storage unit 11, but since the specific operations thereof have already been described, the description is omitted here. next,
At step 72, a list of a plurality of nominal dimension tables registered in the nominal dimension library 15 as a file is shown in FIG.
As shown in FIG. 5, the information is displayed on the CRT 23, and in step 73, an appropriate nominal size table is selected from the displayed nominal size table list using input devices such as the keyboard 1, the mouse 2, and the tablet 3. select. And step 7
In step 4, the nominal size table selected in step 73 is displayed on the CRT.
23, and in step 75, an appropriate nominal size name is selected from the displayed nominal size table using input devices such as the keyboard 1, mouse 2, and tablet 3.

Next, in step 76, whether the value stored in each variable of the variable dimension corresponding to the selected nominal dimension name is a fixed dimension that is a numerical value or an undetermined dimension that is a conditional character , Or a semi-undetermined dimension that is a mixed character of a numerical value and a conditional character. If all the variables corresponding to the nominal dimension name are fixed dimensions, the process is terminated. If it is determined in step 76 that the dimension is an undetermined dimension which is a conditional character or a semi-undetermined dimension which is a mixed character of a numerical value and a conditional character, the process shifts to step 77 and in this step 77 , A message prompting input is displayed on the CRT 23 to wait for input of undetermined dimensions or semi-undetermined dimensions. Then, in step 78, the item input processing is performed. Note that this item input processing is performed by the operation of the condition setting means 7, the nominal size editing means 9 and the item input means 12, but since these specific operations have already been described, the description is omitted here. I do. Edit the nominal size table as described above.

When the nominal size table is generated as described above, a desired projected view or three-dimensional view can be generated by referring to the nominal size table, and processing conditions can be added to the generated projected view or three-dimensional view. become.

Next, the operation of the projection map generating means 16 for generating and arranging a projection map using the generated nominal size table will be described with reference to FIGS. That is, in FIG. 16, in step 80, a nominal size name in a nominal size table (called and displayed on the CRT 23 as shown in FIG. 14) is selected from the input device. Next, in step 81,
The value of each variable of the variable dimension corresponding to the specified nominal dimension name is read, and in step 82, the data of the parametric diagram corresponding to the specified nominal dimension name is read. Next, in step 83, a reference position (X, Y coordinates, for example, the position 21a in FIG. 17) for arranging the shape of the selected nominal dimension name as a projection view at the designated position is designated.
The coordinate position of the shape element is calculated from the designated reference position and the dimension value of the designated nominal dimension name. For example, when the shape element is a line segment, the coordinate values at both ends of the line segment are calculated. When the shape element is a circle (including an arc), the center coordinate value and the radius of the circle are calculated. Next, at step 85, the coordinate values calculated at step 84 are stored in the CRT 23.
In order to output to an output device such as a printer or a plotter, the coordinates are converted into the coordinate values of the output device, and the drawing is performed for each shape element using the coordinate values of the output device calculated in step 86.

Next, the operation of the three-dimensional figure generating means 17 for generating and arranging a three-dimensional figure using the generated nominal size table will be described with reference to FIGS. That is, in FIG. 18, in step 90, a nominal size name in a nominal size table (called and displayed on the CRT 23 as shown in FIG. 14) is selected from the input device. Next, at step 91,
The value of each variable of the variable dimension corresponding to the specified nominal dimension name is read, and in step 92, the data of the parametric diagram corresponding to the specified nominal dimension name is read. Next, in step 93, a reference position (X, Y coordinates, for example, the position 21b in FIG. 19) for arranging the shape of the selected nominal dimension name as a projected view at the designated position is designated.
In order to arrange at a designated position as a three-dimensional view, a height is designated in addition to the X and Y coordinate values. Next, in step 95, the three-dimensional coordinate value of the shape element is calculated from the designated reference position and height and the dimension value of the designated nominal dimension name, and in step 96, the coordinate value calculated in step 95 is converted to the CRT 23 or the like. In order to output to an output device such as a plotter, the coordinates are converted into the coordinate values of the output device (the coordinate conversion here converts the three-dimensional coordinate values into two-dimensional coordinate values), and the output device calculated in step 97 Is drawn for each shape element using the coordinate values of.

Next, the operation of the processing condition adding means 18 for adding processing conditions to the shape generated and arranged by the projection drawing generating means 16 or the three-dimensional drawing generating means 17 will be described with reference to FIG.
This will be described with reference to FIG. That is, step 1
01, the processing conditions (FIG. 2) corresponding to the specified nominal dimension name
It is checked whether 1) exists, and step 101
If the processing condition does not exist in step, an error process is performed in step 102. If it is determined in step 101 that the processing condition exists, in step 103, the processing condition corresponding to the nominal dimension name is added to the nominal dimension name and stored. As a result, the processing condition corresponds to the nominal dimension name, and therefore, by designating the shape, the processing condition corresponding to the shape can be added.

FIG. 21 shows a list of machining conditions for drilling. In the drawing, reference numeral 21a indicates conditions necessary for generating a drilling program. Here, the hole drilling type of the condition indicates the type of the drilling process, and is classified into, for example, types such as center fir, drill hole, counterbore, and chamfer. The process division determines the output order of the machining program. The tool name indicates the name of a tool registered in advance for use in the machining. The spindle rotation specifies the spindle rotation speed of the processing machine. The machining surface safety margin controls the movement of the tool so that the tool does not collide with the workpiece. Reference numeral 21b denotes a column for setting conditions for the above-described processing conditions, and shows an example in which the conditions have already been set. Here 1
It is set so that four types of machining are performed to machine one hole. Also, 21c is the nominal dimension name “M0
1 ". That is, the nominal dimension name “M0
With reference to “1”, a processing condition that matches the nominal size name “M01” is searched from the registered processing conditions by the processing condition adding means, and the processing condition is linked to the quoted hole shape. Reference numeral 21d denotes a command for performing editing for inputting or deleting an item column of the processing condition list, printing of the table, registration, and the like.

Finally, an NC program is generated by the shape analysis unit 19 and the NC data creation unit 20 using the shape data and the processing conditions. After the nominal size table has been created, NC data can be
When a program is generated, as shown in FIG. 22, a nominal dimension name is selected from a nominal dimension table (step 1).
10) Then, the NC program can be generated (step 112) only by designating the shape selected by the processing condition addition command (step 111).

Embodiment 2 FIG. Further, in the above embodiment, when the dimension value of the hole shape is converted into a variable, 5c and 5d in FIG. 5 are converted into variables indicating the depth of the hole shape from the reference surface 5e. As shown in FIG. 23, a variable 8b indicating the width of the depth of the hole shape, not from the reference plane 8a, and a variable 8e indicating the depth from the reference plane 8c and the depth as shown in FIG. The same operation can be expected even when the variable 8d indicating the width of is mixed.

Embodiment 3 FIG. In the above embodiment, when a nominal size name in the nominal size table registered in the nominal size library 15 is selected, a list of nominal size tables is first displayed on the CRT 23 as shown in FIG. Although the user has selected from the displayed nominal size table list using the input device, the name of the nominal size table and the nominal size name are directly input from the keyboard without displaying the nominal size list on the CRT 23. Nominal dimension name may be called.

Embodiment 4 FIG. In the above embodiment, the parametric diagram generation, the area 7c
In the above description, the registration in the nominal size library 15 is performed each time processing such as generation of a nominal size table in which data corresponding to the nominal size name and the variable is not input.
It goes without saying that the process may be shifted to the next process without registering it in the nominal size library 15 every time each process is completed, that is, at the storage level in the internal memory 13.

Embodiment 5 FIG. Furthermore, in the above embodiment, when a nominal dimension table is quoted (utilized), when an undetermined dimension (for example, “?”) Corresponding to a variable already input to the area 7c is a specific numerical value,
Alternatively, when the semi-undetermined dimension (for example, “50?”) Is set to a numerical value other than the numerical value already input, the input using the numeric keys has been described. May be used as specific numerical values as follows.

FIG. 24 is a flow chart for explaining the operation of the shape designating means 24.
It is checked whether or not the position pointed by using the pointing input device such as a mouse or a tablet matches the position of the shape element displayed on the CRT 23. If the specified position is not a shape element, error processing is performed in step 202. If the specified position is a shape element, in step 203, a length or the like representing the feature of the specified shape element is calculated from the shape data. I do. A specific example will be described with reference to FIG. FIG. 25A shows a shape of a hole, and 19a to 19e are shape elements, which represent a circle, a vertical line, a horizontal line, a horizontal line, and an oblique line in order. FIG. 25
(B) shows a parametric diagram of the hole shape, and 19f-1.
9j is a variable of the change dimension, and represents a first-stage hole diameter, a first-stage hole depth, a second-stage hole diameter, an overall hole depth, and a chamfer amount in order. That is, when the shape element circle 19a is specified, the diameter is used as the dimension value of the first hole diameter 19f of the variable, and similarly, when the vertical line segment 19b of the shape element is specified, the line segment length is set to the first step. When the horizontal line segment 19c of the shape element is designated, the length of the line segment is set as the dimension value of the hole diameter 19h in the second stage. When two horizontal line segments 19d and 19c are specified, the interval length between these shape elements is set as the dimension value of the entire hole depth 19i. Further, the sine length of the oblique line segment 19e is set as the dimension value of the chamfer amount 19j. In this way, in step 203, a length or the like representing the feature of the designated shape element is calculated from the shape data. Next, in step 204, the length of the shape element calculated in step 203 is stored as a dimension value in the item of the change dimension in the nominal dimension table. Step 205 is a step for checking whether or not the input is completed. If the input is not completed, the processing is repeated.

Embodiment 6 FIG. In the above embodiment, the CAD / CAM device has been described as an example. However, it goes without saying that the present invention can be applied to a numerical control device having an automatic programming device having a drawing function.

[0054]

As described above, according to the present invention, it is possible to parametrically determine the shape of a three-dimensional object based on its characteristics (e.g., a hole shape, a hole diameter, a hole depth, a chamfer amount, etc.). Since the diagram is created, the relation between the graphic elements is made inside the computer, and the relation between the graphic element viewed from the front view and the graphic element viewed from the side view can be understood. No need for operation errors
Work efficiency is improved. In addition, machining conditions for machining a machining shape generated based on the data relating to the parametric diagram input in the data input box of the nominal dimension table may be added in association with the nominal dimension name in the nominal dimension table. As a result, machining conditions can be added to a parametric diagram whose dimensions have not been determined, making its management simpler. Can be greatly reduced. In addition, when data is input to the nominal size table, the data can be input with reference to the parametric diagram and the interactive input can be performed, so that the data input becomes easy and the data input error is reduced. Furthermore, the data of the nominal dimension table
When inputting numerical data in the input field, input from numerical keys
Is unnecessary, so that data input is further facilitated.

Further, since three types of data input conditions, ie, confirmed data, unconfirmed data, and semi-unconfirmed data, can be set, data can be input according to the state of machining program creation in any case. Becomes

Also, since a three-dimensional three-dimensional figure can be created,
Checking of input data using this three-dimensional stereogram,
It is possible to easily check the created machining program.

[0057]

[Brief description of the drawings]

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

FIG. 2 is a flowchart illustrating a processing operation of a parametric diagram generation unit according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining a result of a processing operation of a parametric diagram generation unit, and is a diagram showing a diagram displayed on a CRT.

FIG. 4 is a diagram for explaining the result of the processing operation of the parametric diagram generation means, and is a diagram showing a diagram displayed on a CRT.

FIG. 5 is a diagram for explaining the result of the processing operation of the parametric diagram generation means, and is a diagram showing a diagram displayed on a CRT.

FIG. 6 is a flowchart illustrating a processing operation of a nominal size table generating unit according to the first embodiment of the present invention.

FIG. 7 is a diagram for explaining the result of the processing operation of the nominal size table generating means, and is a diagram illustrating a nominal size table displayed on a CRT.

FIG. 8 is a flowchart illustrating a processing operation of the interactive input unit according to the first embodiment of the present invention when registering in the nominal size table.

FIG. 9 is a diagram for explaining the result of the processing operation of the dialog input means, and is a diagram showing a nominal size table displayed on the CRT.

FIG. 10 is a flowchart illustrating a processing operation of a nominal size editing unit according to the first embodiment of the present invention.

FIG. 11 is a flowchart illustrating a processing operation of a nominal size registration unit according to the first embodiment of the present invention.

FIG. 12 is a flowchart illustrating a processing operation of a nominal size storage unit according to the first embodiment of the present invention.

FIG. 13 is a flowchart illustrating a processing operation of an item input unit according to the first embodiment of the present invention.

FIG. 14 is a flowchart illustrating a processing operation of the interactive input unit according to the first embodiment of the present invention when the nominal size table is quoted.

FIG. 15 is a diagram for explaining the result of the processing operation of the interactive input means, and is a diagram showing a list of nominal size tables.

FIG. 16 is a flowchart illustrating a processing operation of a projection diagram generating unit according to the first embodiment of the present invention.

FIG. 17 is a diagram for explaining the result of the processing operation of the projection diagram generation means, and is a diagram showing a diagram displayed on the CRT.

FIG. 18 is a flowchart illustrating a processing operation of a three-dimensional diagram generation unit according to the first embodiment of the present invention.

FIG. 19 is a diagram for explaining a result of the processing operation of the three-dimensional diagram generation means, and is a diagram showing a diagram displayed on a CRT.

FIG. 20 is a flowchart illustrating a processing operation of a processing condition adding unit according to the first embodiment of the present invention.

FIG. 21 is a diagram showing a processing condition list according to the first embodiment of the present invention.

FIG. 22 is a diagram showing a flow of NC program generation according to the first embodiment of the present invention.

FIG. 23 is a diagram showing a parametric diagram according to Embodiment 2 of the present invention.

FIG. 24 is a flowchart illustrating a processing operation of a shape instruction input unit according to the fifth embodiment of the present invention.

FIG. 25 is a diagram for describing the result of the processing operation of the shape instruction input unit, and is a diagram illustrating correspondence between shape elements and dimensions.

FIG. 26 is an explanatory diagram illustrating a configuration of a conventional CAD / CAM device.

FIG. 27 is a diagram showing a flow of conventional NC program generation.

[Explanation of symbols]

 4 Shape Generator 5 Parametric Diagram Generating Unit 6 Nominal Dimension Table Generating Unit 7 Condition Setting Unit 8 Interactive Input Unit 9 Nominal Dimension Editing Unit 10 Nominal Dimension Registering Unit 11 Nominal Dimension Storage Unit 12 Item Input Unit 13 Internal Memory 14 Parts Library 15 Call Dimension library 16 Projection diagram generation means 17 Solid figure generation means 18 Processing condition addition means 19 Shape analysis unit 20 NC data generation unit 21 NC program 22 Processing path display unit 23 CRT 24 Shape instruction input means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G05B 19 / 409,19 / 4097

Claims (3)

(57) [Claims] 1. A parametric diagram generating means for generating a parametric diagram based on characteristics of a processed shape element, shape data corresponding to the parametric diagram generated by the parametric diagram generating device, and a nominal dimension corresponding to the shape data. Nominal dimension table generating means for creating a nominal dimension table having an input field in which a plurality of names can be entered, display means for displaying the nominal dimension table in combination with a parametric diagram, and display means for displaying the nominal dimension table displayed on the display means. Input means for inputting the shape data corresponding to the parametric diagram and the nominal dimension name corresponding to the shape data in the input column, based on the data relating to the parametric diagram input in the data input column of the nominal dimension table. Processing conditions for adding the processing conditions for processing the generated processing shape, corresponding to the nominal dimensions in the above nominal dimensions table The input means.
Indicates a predetermined position of the shape element displayed on the display means.
By indicating, the shape data input column of the above nominal size table
Enter the dimension value of the specified shape element in
A machining program creation device , characterized in that: 2. The input data is set as a fixed size as a condition at the time of data input for an arbitrary item in a data input column corresponding to a parametric diagram in a nominal size table.
Numerical values and conditional characters that make the entered data undetermined dimensions
And the values and conditions that make the input data semi-undetermined dimensions
2. The machining program creating apparatus according to claim 1, further comprising condition setting means for setting a condition under which a character mixed with a character can be input . 3. A three-dimensional figure generating means for creating a three-dimensional three-dimensional figure based on data input to a nominal size table corresponding to a parametric figure.
Alternatively, the machining program creating device according to claim 2.