JPH05290130A - Method for adding hole machining information attribute of design drawing - Google Patents

Abstract

PURPOSE:To easily perform plotting without inputting the same data again by reading out the hole machining information attribute added to a size lead-out line part and writing necessary character information when the size lead-out line part is added and plotted. CONSTITUTION:An input/output device 4 which inputs a hole machining shape and the hole machining information attribute consists of a graphic display 4a and a tablet 4b. When the hole shape is plotted, a group of its constituent segments is handled as one unit of figure information, the hole machining information attribute taken out of a data base is added together with a machining kind and size which are inputted, and they are stored in a storage device 5. At this time, hole machining shapes which are of the same kind and of the same size are counted as the same group and also stored as group information in the storage device 5. This storing operation is carried on until hole machining input ends. Then the input operation for the plotting of the size lead-out line part is greatly reducible since the hole machining information attribute is added to drawing information showing the hole shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention performs computer-aided design (CAD) with the aid of a computer, and uses CAM (Computer Aided MAD) based on the CAD data.
The present invention relates to a method of rationalizing the work of inputting a hole machining portion in design data and management of this hole machining data to improve workability when NC data is created by an anufacturing system.

[0002]

2. Description of the Related Art The recent progress and widespread use of CAD and CAM systems has been remarkable. By designing a machine with a CAD system, the designer can efficiently create a design drawing while interacting with a computer using a graphic display and an input device such as a tablet. When machining with an NC machine tool based on this design, CA
The operator of the M system can efficiently create NC data by directly reading the CAD output data into the CAM.

By the way, in the CAD and CAM systems described above, the input of a hole processing portion such as a tap hole or a bolt hole as shown in FIG. 9 is performed as follows.

The CAD system aims to create a design drawing, and the hole drilling portion is drawn by the graphic information portion 1 drawn by the line segments and arcs shown in FIG. 9, the dimension drawing line 2, and the symbol / number 3. And the dimension leader line part. The drawing of this graphic information portion is performed by designating the hole type such as tapped holes, then entering the dimension data such as the hole diameter and the hole depth, and finally designating the center of the hole on the display. As a result, the CAD system reads the drawing drawing data corresponding to the designated and input data from the hole machining information data table of the storage device and draws the graphic information portion 1 shown in FIG. Next, the dimension lead line portions 2 and 3 are drawn. This is because if you specify that you want to create a dimension leader line, key in the text information, specify the figure information part to be pulled out on the display, and specify the drawer position and the drawer direction as right or left. The dimension leader line portion shown in FIG. 9 is drawn.

The CAM system for creating NC data is C which is drawing information created by the CAD system.
The AD data can be read as it is and displayed on the display. The operator can determine the machining type and size of the hole from the graphic information part 1 and the dimension lead line parts 2 and 3 displayed on the graphic display. The data is read and the key is input. In this case, only the center coordinates of the hole can be directly used in the CAD data, which is performed by designating the target graphic information on the graphic display with a tablet or the like.

[0006]

The above CAD and CAM
The design method using the system can improve the working efficiency as compared with the design drafting using the drafter and the automatic blogging apparatus in which the operator reads the paper drawing and creates the NC data.

However, there are many irrational parts in the above-mentioned method of inputting hole machining information, as described below. That is, CAD
When the hole processing part is drawn by the system, as described above, the same data as when drawing the graphic information part (hole shape 1) must be input also when drawing the dimension leader line part (character information part 3). Instead, the equivalent input operation must be performed twice. In particular, when drawing characters for the dimension leader line, all the hole drilling information attributes are entered manually, so it is necessary to store all the necessary data or check the standards each time. The efficiency is extremely poor.

Then, the CAD created in this way
Since the data is output as data divided into graphic information and character information, it cannot be used directly even if input to the CAM system. That is, the operator of the CAM system reads the hole machining information attributes (hole diameter, hole depth, etc.) necessary for NC data creation from the image information (figure 1 and characters 3) of the drawing displayed on the display one by one. Must be entered. Although the center position of the hole can be entered by pointing a figure on the display, the above reading operation is basically the same as reading from a drawing drawn on paper and requires the experience and ability of a skilled person. , CAM side requires a lot of effort for input.

As described above, even when the CAD or CAM system is used, the type and size of the hole are input separately, so that the work efficiency is poor.

Further, it is necessary to manage hole drilling data of the same type and size as one group, and use it for correction of input errors, calculation of machining time, calculation of frequency of use of the same tool, etc. Since the current CAD and CAM systems do not support this, their workability is poor. In this management, correction of input error is, for example, when there are three metric coarse screws with a nominal diameter of 16 mm, the character information of the dimension lead line is written as "3-M16 ..."
When a drawing is created by the CAD system and when NC data is created by the CAM system, the number and the position are confirmed by searching the graphic display for the actual drawing of three identical figures. Further, the calculation of the processing time is performed by creating a list in which the number of pieces is described for each group and passing it to the production control department. Since these operations are visual and handwriting operations, a great deal of labor is required.

[0011]

In order to solve the above conventional problems, the present invention provides the following drilling information attribute adding method.

(1) A method for facilitating the work of inputting the dimension lead line portion is to store the stored hole machining information by inputting the hole type, the representative dimension, and the drawing position at the time of drawing the hole portion of the design drawing. In a CAD system for automatically creating hole graphic information by referring to a data table, at the same time as creating the hole graphic information, the hole machining information attribute included in the referenced data table is added to this graphic information to create a data memory. When you add / plot a dimension leader line part consisting of leader lines and character information by specifying the figure information after this,
It is characterized in that the hole drilling information attribute added thereto is read to obtain necessary character information and is written in the drawing.

(2) A method for eliminating the need for inputting hole drilling information in the CAM system is as follows:
The data referenced at the same time when the hole type, representative dimensions, and drawing position are entered when drawing the hole portion of the design drawing, and the figure information of the hole is automatically created by referring to the stored hole machining information data table. The CAD data is created by adding the hole machining information attribute included in the table to this figure information.
The CAM system is characterized in that NC data is created by automatically reading the center coordinates of hole graphic information and hole machining information attributes from the CAD data.

(3) A method for efficiently managing group-by-group management, particularly correction of an input error, is to add a hole machining information attribute to the figure information of a hole in the method of (1) and (2) above. The groups that match the type and size are discriminated as one group, and this is stored as group information in group units, so that graphic information belonging to the same group can be color-coded by designation on the graphic display of the CAD system. Is changed and displayed, and the data can be modified collectively for each group.

(4) The method for automatically creating a list for production control in order to estimate the machining time is described in (1) above.
In the method of (2), when the hole machining information attribute is added to the hole graphic information, the holes that match the hole type and size are discriminated as one group, and the total number of holes is added for each group. By storing the group information together with the hole type / dimension as a group information, the CAD system or the CAM system is capable of outputting a list of machining types and their numbers determined by the hole type / dimension.

[0016]

According to the above-mentioned method of the present invention, the designer who uses the CAD system needs only to instruct the machining type of the hole, the dimension such as the hole diameter and the hole depth, and the drawing position when drawing the hole shape. The hole shape to be drawn can be drawn. Then, when drawing the dimension lead line portion, the CAD system obtains the necessary character information from the hole machining information attribute added to the graphic information by simply designating the line segment that constitutes the hole shape and the display position. Draw in place.

Further, the operator using the CAM system, by giving only one read command, causes the CAM system to read the hole machining coordinates and hole machining information necessary for NC data creation from the CAD data, Regarding processing, NC data can be created without manual input.

Further, since hole drilling data of the same type and size are automatically managed as a group, data confirmation and batch correction can be performed in group units, and a group list for production management is automatically output, which is necessary for work. Can greatly reduce the labor required.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a device configuration of a CAD system for executing a hole machining information attribute adding method in design drafting of the present invention. ..

In FIG. 1, reference numeral 4 denotes an input / output device for an operator to input a hole machining shape and a hole machining information attribute, which includes a graphic display (G / D) 4a and a tablet (T).
B) The main element is 4b. A storage device 5 includes a memory for storing the drawing information and the hole data table.
6 is an output device such as an electrostatic plotter 6a and a printer 6b;
Is a main controller including a CPU.

A method of inputting hole machining information in the CAD system will be described with reference to the schematic flow chart shown in FIG. This shows the flow until the hole machining information attribute is added and the data is stored in the memory when the hole is drawn by the CAD system.

The drawing of the hole-machined portion is performed during a series of work of design and drawing by the CAD system. When the hole drawing operation is started, the hole machining information parameters are first displayed on the graphic display. This is for general use (normal NC
It displays the parameter to select whether to use the machine tool) (machine tool) or special (special NC machine tool) and whether to insert the hole drilling data into the plan view or the sectional view. You can change this if you wish.

Next, the processing type (shape) of the hole to be drawn is selected, and the representative dimensions (hole diameter, hole depth, etc.) and the processing position are input. The hole shape is input by selecting a processing type with a touch pen on a menu (FIG. 3) arranged on a part of the tablet 4b. As a result, the input screen for the dimensions is displayed, and the model of the corresponding hole machining shape is displayed on the graphic display 4a.

Here, as a representative dimension, the hole diameter (nominal diameter)
Enter the hole depth (effective depth) and specify whether it is a through hole or a blind hole. Although this input item differs depending on the type of processing as shown in FIG. 4, it may be performed according to the input item display on the screen. By this input, the CPU retrieves the hole drilling information data (FIG. 5) related thereto from the database in the storage device 5, or the standard formula (for example, tapped hole depth =
Effective depth + (pitch x 5), reamer pilot hole depth = effective depth +
Calculate from 2.5) and create the corresponding hole shape. This related hole machining information data is, for example, the prepared hole diameter / prepared hole depth / pitch for screw holes, the prepared hole diameter / prepared hole depth for reamed holes,
In the bolt hole, the counterbore diameter and the counterbore depth are items marked as standard values in FIG. 4, but these can be changed to values entered by the designer.

After that, when the machining position is input by designating the center position of the hole with the tablet 4b while looking at the graphic display 4a, the hole shape created on the screen (for example, hole shape 1 shown in FIG. 9) is displayed. To be done.

In the present invention, at the time of drawing the above-mentioned hole shape, a set of line segments forming one hole shape created is used as one unit of graphic information, and this graphic information is used as attribute data to input the processing type and Along with the dimensions (hole diameter / hole depth), the hole machining information attribute extracted or calculated from the database is added and stored in the storage device 5. At the time of this storage, holes having the same type and size as the same group are automatically counted in the same group, and the number and the type and size are stored in the storage device 5 as group information. This group information is as shown in FIG.

The storing operation in the storage device 5 is continued until the hole machining input is completed. In the drawing of the dimension lead line portion performed thereafter, since the hole machining information attribute is added to the drawing information representing the hole shape as described above, the input work can be greatly simplified. That is, in this input work, after the dimension leader line creation is specified in the menu (FIG. 3) on the tablet 4b, the graphic information to be drawn out is instructed on the display, and the drawing position and the drawing direction are set to the right or left. 9 is specified, the CPU 7 reads the hole machining information attribute stored in the storage device 5, and
Dimension leader line part (character information part) 2, 3
Draw. That is, the work of inputting character information, which is conventionally required, is completely unnecessary, and the workability is greatly improved.

When the drawing of the hole shape (graphic information) 1 and the dimension lead line portions (character information) 2 and 3 is completed, it is utilized that the group information of the drawn holes is stored in the storage device 5. Then, the graphic information and the hole machining information for each same machining group can be continuously or designated and displayed on the graphic display for confirmation. This will be described with reference to FIG.

FIG. 7 shows a flow chart of the processing information confirmation function. With this function, you can select three types of execution: continuous execution for each group, instruction execution for each group, and list output of hole drilling information. It is very easy to check the entered hole drilling data, and labor is saved. Reduce and eliminate oversight.
Here, the continuous execution for each group is to perform confirmation by displaying the hole images for each group of the same shape and size in the stored order in different colors on the graphic display. The instruction execution for each group is to display the instructed items in different colors. This color-coded display is easy to see and can greatly improve workability. In addition, the list output of the machining information is to output a part of the hole machining data (data of the machining type, the number of holes, and the nominal diameter) necessary for the production management to the paper by the output device 6b. It is used by managers to estimate processing time.

The CAD data created as described above is converted into C
If read into the AM system, the hole information information attribute added to the hole shape information on the CAD side can be simply and easily taken in by the hole information data taking function. Here, the CAM system has the same device configuration (the function differs depending on the software) as the CAD system shown in FIG. 1, and has been improved to have a hole machining information fetching function described below.

This will be described with reference to FIG. The CAM operator reads the model data file created by CAD as described above into the CAM as an initial setting for creating NC data. If this input is performed by reading from a handwritten drawing, the work according to the present invention cannot be rationalized.

Then, the processing information of the read model data file is displayed on the display, the data is selected, and the list is displayed. This indicates that the CAM system also performs the machining information confirmation work described in FIG. 7 (three types of execution: continuous execution for each group, instruction execution for each group, and hole machining information list output). This is C
This is possible because the hole machining information is added as an attribute to the hole shape information of the AD data, and the CAM system incorporates the same program as the CAM system to execute this.

Next, the CAM system judges whether or not the read CAD data includes a hole drilling information attribute, and if so, automatically reads this (execution of a read command). .. Since the center position of the hole is included in the hole shape information, this allows the CAM system to
All the information necessary for creating the machining data can be read, and no manual input or other input operation for hole machining is required.

When the hole machining information is not included (for machining other than holes such as milling cutters and end mills to which the machining information attribute is not added in the CAD system of the present invention), the operator determines the same as before. Make an input. This is because when the movement of the tool to be used is patterned for the machining type, the machining information indicating which tool to use is input, and the position and shape are input in the CAD drawing. When the above machining pattern does not exist, the tool to be used and cutting conditions are input, and the operator manually inputs all the procedures for moving the tool to create a program. At the time of manually creating the program, the position and shape can be input by reading from the CAD drawing displayed on the graphic display.

When it is confirmed that all the processing information has been input (determination of other processing in FIG. 8), NC data is automatically created. That is, the tool to be used and the cutting conditions are automatically determined from the various parameter files stored in the storage device of the CAM system, and the machining order is automatically determined.

Next, a post processor process is performed to change the data format of NC data according to the NC machine tool having different program specifications depending on the manufacturer. At this time,
The tool path corresponding to the NC data can be displayed on the display for confirmation. Then, the NC data is output, and the process ends.

[0037]

According to the method of the present invention, the minimum necessary data (type of processing, hole diameter, hole depth, etc.) is set once when the hole shape is drawn in the design drawing using the CAD system. If input, the CPU refers to the hole drilling information data table and automatically relates the hole drilling information attributes (pilot hole diameter, pilot hole depth, pitch, counterbore diameter, counterbore depth, etc.) related to them. Since it is added and saved, the character information of the dimension drawing line portion of the hole drilling can be automatically written, and it is not necessary to input the same data again, and drawing can be done very easily.

Further, in the CAM system, NC data can be created by taking in the hole drilling information attribute added to the CAD data as an attribute by one command function, and there is no input error of the drilling information, and the input time is greatly reduced. Can be reduced.

Further, since the hole machining data of the same type and the same size is automatically managed as a group by utilizing the above-mentioned addition of the hole machining information attribute, it is possible to confirm and collectively correct the data in group units, and to manage the production management. The group list for is automatically output, and the labor required for work can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a CA for executing a drilling information attribute addition method.
Block diagram showing the device configuration of D system

FIG. 2 is a schematic flow chart of adding a hole machining information attribute and storing it in a memory.

FIG. 3 is a diagram showing a menu on a tablet of the input / output device of FIG.

FIG. 4 is a list view of shape dimension input items corresponding to machining types.

5 is a diagram showing an example of a database storing the standard values of FIG.

FIG. 6 is a diagram showing an example of hole machining information attributes.

FIG. 7 is a flowchart showing a processing information confirmation function of a CAD system and a CAM system.

FIG. 8: CAM system reads CAD data and NC
Schematic flow chart showing the process of creating data

FIG. 9 is a diagram showing an example of a hole shape (graphic information) and a dimension leader line portion by a CAD system.

[Explanation of symbols]

 1 Hole shape (graphic information) 2 Dimension leader line 3 Character information (hole machining information attribute) 4 Input / output device 5 Storage device 6 Output device 7 Main control device

[Procedure amendment]

[Submission date] August 6, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

Then, the CAD created in this way
Since the data is output as data divided into graphic information and character information, it cannot be used directly even if input to the CAM system. That is, the operator of the CAM system reads the hole machining information attributes (hole diameter, hole depth, etc.) necessary for NC data creation from the image information (figure 1 and characters 3) of the drawing displayed on the display one by one. Must be entered. If controls pattern on disk-play, although the center position of the hole can be entered, the reading operation is basically the same as reading from a drawing drawn on paper,
The experience and ability of a skilled person is required, and a great deal of effort is required for inputting on the CAM side.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

In the present invention, at the time of drawing the above-mentioned hole shape, a set of line segments forming one hole shape created is used as one unit of graphic information, and this graphic information is used as attribute data to input the processing type and Along with the dimensions (hole diameter / hole depth), the hole machining information attribute extracted or calculated from the database is added and stored in the storage device 5. At the time of this storage, holes having the same type and size as the same group are automatically counted in the same group, and the number and the type and size are stored in the storage device 5 as group information. The group information is as shown in FIG.

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

Claims (4)

[Claims] 1. A CAD system for automatically creating figure information of a hole by referring to a stored hole machining information data table when a type of hole, a representative dimension, and a drawing position are input at the time of drawing a hole portion of a design drawing. At the same time as creating the figure information of the hole, the hole machining information attribute included in the referenced data table is added to this figure information and stored in the data memory, and then the figure information is specified and the leader line is drawn. When adding and drawing a dimension leader line part consisting of and character information, the hole machining information attribute added to it is read to obtain the necessary character information and it is written in the drawing. Processing information attribute addition method. 2. In a CAD system, a hole type, a representative dimension, and a drawing position are input at the time of drawing a hole portion of a design drawing, and the figure information of the hole is automatically created by referring to a stored hole machining information data table. At the same time, the hole machining information attribute included in the data table referred to at the same time is added to this figure information to create CAD data, and in the CAM system, the center coordinates of the hole figure information and hole machining are performed from this CAD data. A method for adding a drilling information attribute in design drawing, which automatically reads information attributes and creates NC data. 3. The hole machining information attribute adding method according to claim 1 or 2, wherein when the hole machining information attribute is added to the graphic information of the hole, it is determined that the hole type and size match. One group is stored as group information, and by storing this as group information in group units, the graphic information belonging to the same group is displayed in different colors on the graphic display of the CAD system according to designation, and data correction is performed in group units. A method for adding hole drilling information attributes in design and drafting, which is characterized in that it can be collectively performed by. 4. The hole machining information attribute adding method according to claim 1 or 2, wherein when the hole machining information attribute is added to the graphic information of the hole, it is determined that the hole type and size match. As one group, the total number of holes for each group is added up, and the information is stored as group information together with the type and size of the hole.
A method for adding a hole machining information attribute in design drafting, characterized in that the system outputs a list of machining types determined by the type and size of holes and the number thereof.