JPH1153421A - Cad system for designing production facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain efficiency over a wide range including conceptual design by applying respective reference data inputted to parameters of design rules based upon inputted specification and implementing the design rules in sequence. SOLUTION: A design rule data base 1 is stored with different kinds of design rules having operation contents as to one operation unit prescribed in a parametric. A user interface 2 inputs and stores a design rule in the design rule data base 1 and inputs specification of which kind of design rule stored in the design rule data base 1 is used and reference data applied to the parameter of the design rule to be used. A design rule execution module 3 applies the inputted reference data to the parameters of the design rules based upon the inputted specification to implement the design rule in sequence while referring to design information on standard components, design table data, a design calculation expression, and a machine performance table, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD (Computer Aided Design) system used for designing a production facility such as a press die, and more particularly to a CAD system in which a design procedure can be set by a user.

[0002]

2. Description of the Related Art A conventional CAD for structural design of a press type which is a kind of production equipment.
As shown in Fig. 18 (b), the system creates a procedural automatic drawing program according to the work unit of the designer by the programmer who is provided with the requirements of the designer who is the user and various type design information. By doing so, it was developed as a dedicated CAD system.

However, in such a conventional development method,
The existence of specialized programmers who have a good understanding of type design is indispensable for the development of CAD systems, and the more automated the system, the more such specialized programmers are required, making it more difficult to secure programmers. There was a problem of becoming.

[0004] In addition, an automatic drafting system using such a procedural program can mainly support detailed design, and only a small part of general design work can be standardized.
In particular, it has been difficult for conventional CAD systems to support concept design (conceptual design) that determines most of the design quality.

[0005] Therefore, even if a conventional CAD system is used, the overall design procedure itself is not so different from that before the introduction of the CAD system, and it is difficult to improve efficiency over a large range including the concept design, and each work unit The reality was that we had to stay at the level of efficiency.

As a result of a detailed analysis of the design work of the above-described production equipment such as a mold by the inventor of the present invention, if the design work of the production equipment is standardized as knowledge and made into parts, there are several types of work including concept design. It was found that the work units could be classified. Thus, the inventor of the present application can define and save the contents of these working units by the designer himself, and the designer himself selects appropriate ones from the saved working units as appropriate and combines them to perform a series of design procedures. Build and CA it
If the D system can be executed, it will be possible to construct a CAD system that can achieve a wide range of efficiency including concept design without securing a large number of specialized programmers. It has arrived.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned findings,
A CAD system for designing production equipment according to the present invention comprises: a design rule database for storing a plurality of types of design rules that parametrically define the work content of one work unit; In addition to storing in the rule database, specifying which type of design rule is to be used from among the design rules stored in the design rule database, and applying the design rule parameters to be used. A user interface for inputting reference data to be applied, and a design rule execution module for sequentially applying the input reference data to a plurality of design rule parameters based on the input specification, and sequentially executing those design rules. ,
It is characterized by having.

In such a CAD system for designing production equipment, a user preliminarily defines a plurality of types of design rules which prescribe parametric work contents for one work unit, and inputs these design rules from a user interface. It is stored in the design rule database, and during design work, the user can specify which type of design rule to use from among the design rules in the design rule database and specify the design rule to be used. By performing the operation of inputting the reference data to be applied to the parameter from the user interface a plurality of times, the design rule execution module applies the reference data input by the user to the parameters of the plurality of design rules specified by the user. And use those multiple design rules And next execution, thereby, the design procedure consisting of a series of design rules is executed.

Therefore, the CAD for production equipment design of the present invention
According to the system, as shown in FIG. 18 (a), bloggers configure a general-purpose production equipment design CAD system having the functions of the design rule database, user interface, and design rule execution module. It is only necessary to create a program so that the general-purpose production equipment design CAD system can be easily dedicated to a production equipment design CAD system having desired functions. Even without securing a large number of specialized programmers who have a good understanding of equipment design, it is possible to construct a CAD system for production equipment design that can increase efficiency over a wide range including concept design.

In the present invention, preferably, the plurality of types of design rules include:
It is assumed that the processing includes a change of a component attribute value, a table search, and a design calculation. If the types of design rules include placement or movement of parts, change of attribute values of parts, table search, and design calculation, the user can specify the type of parts as reference data to be applied to parameters, for example. And the position data, the design rule execution module causes the design rule execution module to place or move an arbitrary part to an arbitrary position according to the design rule of the arrangement or movement of the part. By inputting attribute value data such as dimensions, the design rule execution module can perform parametric deformation of an arbitrary component according to the design rule for changing the attribute value of the component, or input the type of the component as the reference data, for example. This allows the design rule execution module to perform a table search to find the dimensions of each part of an arbitrary part according to the table search design rules. Or, for example, by inputting the dimension data of the part as the reference data, it is possible to cause the design rule execution module to calculate the arrangement of other parts and the like according to the design rule of the design calculation. A CAD system having typical functions required for production equipment design can be easily constructed, and a conceptual design can be easily performed using the CAD system.

In the present invention, preferably, the plurality of types of design rules further include a call to another design rule. If the type of design rule further includes a call to another design rule, the design procedure consisting of a series of design rules to be executed by the design rule execution module has Design procedures can be called,
The design procedure to be executed by the design rule execution module can be hierarchized, and the setting of the design procedure can be facilitated.

Further, in the present invention, it is preferable that the design rule execution module searches for a position where no interference occurs when the component placed or moved based on the design rule causes interference, and searches for the position. It is assumed that the component is arranged or moved. If such a function is provided in the design rule execution module, even if the design rule execution module automatically executes the design procedure based on the input from the user, it is possible to automatically eliminate the interference of parts with the existing structure and the like. In addition, it is possible to cause the CAD system to automatically and reliably perform a design operation that requires a long time.

[0013]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a system diagram showing the configuration of an embodiment of a CAD system for designing production equipment according to the present invention. The CAD system according to this embodiment parametrically defines work contents for one work unit. A design rule database 1 for storing a plurality of types of design rules, a design rule which is inputted and stored in the design rule database, and a design stored in the design rule database. A user interface 2 for inputting which type of design rule to use from among the rules and reference data to be applied to the parameters of the design rule to be used, and a plurality of design rules based on the input specification Applying the input reference data to the parameters of each, standard parts and design table data, design calculation formula, machine A design rule execution module 3 for sequentially executing the design rules while referring to various design information such as a function table, and a normal simulation for simulating the operation of a production facility using the solid data generated by the design rule execution module 3 A module 4 and a normal drawing conversion module 5 for converting the solid data into two-dimensional drawing data are provided.

The CAD system of this embodiment is specifically constructed by changing the operation program of a normal CAD system, and the design rule database 1 includes, for example, a ROM of the CAD system. , RA
The user interface 2 includes, for example, a screen display device such as a CRT device of a CAD system and an input device such as a keyboard and a mouse, and an external storage device such as a hard disk drive.
And a central processing unit of the AD system. The design rule execution module 3, the simulation module 4, and the drawing conversion module 5 are, for example, CAD.
It can be constituted by a central processing unit of the system.

Here, the design rule database 1 includes the arrangement or movement of parts, a table search, a design calculation,
This embodiment stores six types of design rules, that is, attribute value changes of parts, calling of design procedures, and other standard procedures, and as a type (type) of reference data applied to these design rules in this embodiment. Then, type 1 = point, type 2 =
Straight line, type 3 = curve, type 4 = point sequence, type 5 = numerical value, type 6 = character, type 10 = matrix are defined.

Here, in order to identify the type of the design rule, the design rule relating to the arrangement or movement of the parts has No. No. 1 to No. Rule No. up to 100 No. is assigned to the design rule for the table search. 1
01 to No. Rule No. up to 200 No. is assigned to the design rule regarding the design calculation. No. 201 to No. Rule No. up to 300 No. is assigned to the design rule for changing the attribute value of the component. No. 301 to No. Rule No. up to 350 No. is given to the design rules regarding the call of the design procedure and other typical procedures. 351 to No. 351 Rule No. up to 999 Is given.

The design rules for each of the above types will be described. As the design rules relating to the arrangement or movement of parts, for example, those shown in FIGS. 2 and 3 are defined by the user, and the design rule data is stored in a manner described later. 2 is stored in the rule No. 1 in FIG. In 1, the number of possible reference data is one, and
The type of the reference data is defined as a type 1 point, and the operation of “moving according to the reference point” is performed using the reference data point as a reference point. In this case, the type (kind) of movement is set to the type 0 for co-moving in the x and y directions.
And a type 1 for fixing the x value and a type 2 for fixing the y value.

The rule No. in FIG. In step 2, the number of reference data that can be taken is one or two, and the type of reference data is defined as a type 3 curve or a type 3 curve and a type 1 point. The operation of "moving according to the intersection with the reference curve" is performed using one of one or a plurality of intersections with the x-value or y-value straight line. Here, the type of movement can be selected from two types, a type 1 for fixing the x value and a type 2 for fixing the y value.

The rule No. in FIG. In step 3, the number of reference data that can be taken is one or two, and the type of reference data is defined as a type 3 curve or a type 3 curve and a type 1 point, and the designation of the reference data curve is specified. The operation of "moving according to the maximum or minimum of the designated range of the reference curve" is performed using the range. Here, the type of movement can be selected from two types, a type 1 for fixing the x value and a type 2 for fixing the y value.

The rule No. in FIG. In 5, the number of reference data that can be taken is set to 0 or 1, and the type of reference data is defined as a type 1 point. If reference data is not specified, the position of a standard part separately defined as a reference is set. While the indicated point is used as a reference point, when the reference data is designated, the operation of "aligning the positions of the arranged standard parts" is performed using the point of the reference data as the reference point. Here, the type of movement can be selected from two types, a type 1 for fixing the x value and a type 2 for fixing the y value.

Rule No. in FIG. In step 10, the number of reference data that can be taken is set to one, and the type of reference data is defined as a type 10 matrix, and the operation of "setting a partial coordinate system" is performed using the matrix of reference data. And

The rule No. in FIG. In step 11, the number of reference data that can be taken is from one to three, and the type of reference data is a point of type 1 or a type 1
And move the data in the complex coordinate system using the points and numerical values of the reference data.
That work is to be done. In this case, the types of movement are: type 0 that moves in the x and y directions, type 1 that moves only the x component, type 2 that moves only the y component, r
(Radius) and θ (angle) The type can be selected from six types: a type 10 that moves together, a type 11 that moves only the r component, and a type 12 that moves only the θ component.

As design rules relating to table retrieval, for example, those shown in FIG. 4 are defined by the user, and the design rule database 1 is created by a method described later.
Is stored in the rule No. in FIG. In 101,
The number of reference data that can be taken is 1 for input and 20 for output, and the type of reference data is defined as a type 5 numerical value or a type 5 numerical value and a type 6 character. Performs a real-value search on a table based on the input reference data and outputs the search result as reference data based on the text.
That work is to be done.

Rule No. in FIG. At 102, the number of reference data that can be taken is 1 for input and 20 for output, and the type of reference data is defined as a type 5 numerical value or a type 5 numerical value and a type 6 character. With reference to the numerical values and characters, the operation of “executing a linear search on a table based on the input reference data and outputting the search result as reference data” is performed.

The rule No. in FIG. In 103,
The number of reference data that can be taken is 1 for input and 20 for output, and the type of reference data is defined as a type 6 character or a type 5 numerical value and a type 6 character. With reference to the character, an operation of “performing a character search on a table based on input reference data and outputting the search result as reference data” is performed.

Further, as design rules relating to the design calculation, for example, those shown in FIGS. 5 and 6 are defined by the user and stored in the design rule database 1 by a method described later. Rule No. 201
Then, the number of possible reference data is 2 per input,
In addition to one output, the type of reference data is defined as a point of type 1 or a numerical value of type 5, and based on the coordinate values and numerical values of the points of the reference data, "execute four arithmetic operations based on input reference data" Then, the calculation result is output as reference data. " Further, here, the type (kind) of the calculation can be selected from four types: a type 1 for addition, a type 2 for subtraction, a type 3 for multiplication, and a type 4 for division.

The rule No. in FIG. In step 202, the number of reference data that can be taken is set to one for both input and output, and the type of reference data is defined as a type 1 point or a type 5 numerical value. The operation "executes a function process based on the input reference data and outputs the reference data" is performed. In this case, the types of calculation are type 1 for sin, type 2 for cos, and type 3 for tan.
And type 4 to be arcsin, type 5 to be arccos, and ar
It is possible to select from seven types, a type 6 to be ctan and a type 7 to be square root.

Rule No. in FIG. In 203, the number of reference data that can be taken is 10 for input and 1 for output, and the type of reference data is defined as a type 1 point or a type 5 numerical value. The task is to execute a user-specified calculation formula based on the input reference data and output the reference data. It should be noted that the user-specified calculation formula is a rule No. Each is set separately.

The rule No. in FIG. In 221, the number of reference data that can be taken is two for input and one for output, and the type of reference data is a combination of points of type 1 and a numerical value of type 5 or a point of type 1 and a type 2 point. A combination of straight lines and a numerical value of type 5 or a combination of a point of type 1 and a curve of type 3 and a numerical value of type 5 is defined as a figure based on the combination of the reference data points and the numerical value. And outputs the reference data ". Also, here the type of calculation
Of two types, a type 1 for calculating the shortest distance between points or between a point and a straight line or a curve, and a type 2 for calculating distances after specifying a direction for obtaining a distance by an angle. You can choose from.

The rule No. in FIG. At 222, the number of reference data that can be taken is one for both input and output, and the type of reference data is a point of type 1 and a numerical value of type 5, a straight line of type 2 and a numerical value of type 5, or a type 3 Defines a curve and a numerical value of type 5, and performs the operation of "executing a graphic calculation based on the reference data and the part reference point and outputting the reference data" based on the points, straight lines, and the like of the reference data and the numerical values. And Here, the type of calculation is defined as part reference point and point or line,
It can be selected from two types, a type 1 for calculating the shortest distance between the curve and a type 2 for calculating the distance after designating the direction for obtaining the distance by specifying an angle. The component reference point is set by the user at an arbitrary position on each standard component.

The rule No. in FIG. In 223,
The number of pieces of reference data that can be taken is 0 for input and 1 for output, and the type of reference data is defined as a numerical value of kind type 5 and “the figure data is calculated by executing graphic calculation between the component reference points. Is output. " In addition, here, the calculation type is a type 1 for calculating the shortest distance between component reference points predetermined for each component, and a calculation for obtaining the distance after specifying a direction for obtaining the distance by an angle. Type 2
And two types can be selected. Note that the part reference point is defined by the rule No. Similar to 222.

As the design rules relating to the change of the attribute values of the parts, for example, those shown in FIG. 7 are defined by the user and stored in the design rule database 1 by a method described later. Rule No. In 301, the number of reference data that can be taken is set to 10, and the type of the reference data is defined as a type 5 numerical value.
The operation of "changing the parameter value of the graphic data based on the input reference data" is performed based on the numerical value of the reference data. The parameter whose value is to be changed is determined by the user according to the rule No. Each is separately selected and specified.

Further, as design rules relating to calling of design procedures and other routine procedures, for example, those shown in FIG. 8 are defined by the user and stored in the design rule database 1 by a method described later. , FIG.
Rule No. in In 351, it is defined that neither the number of reference data that can be taken nor the type of reference data is set, and an operation of “calling a design procedure from a design procedure file” is performed. The design procedure to call is
When the user sets the rule No. Each design rule is separately selected and designated, and this design procedure can include one or a series of design rules as described above. Therefore, in the system of this embodiment, since the design procedure can be constructed hierarchically as shown in FIG. 9, a large design flow is set in the upper design procedure and a specific design process is set in the lower design procedure. In addition, since the same lower-level design process can be called and used as many times as the specific design process is the same in the higher-level design procedure, the design procedure can be easily set. .

The rule No. in FIG. In 999,
The number of reference data that can be taken is 10 for the input and 1 for the output, and the type of the reference data is defined as a type 5 numerical value. A command trace for sequentially tracing the data corresponding to the input reference data is executed ". Therefore, this setting rule becomes a trace file for executing a predetermined command trace.

FIG. 10 is a flowchart showing a processing procedure for defining the above-described various design rules in the CAD system of this embodiment, taking the case of design rules relating to the arrangement or movement of parts as an example. First, in step 11, the user, who is the user, sets the type of the design rule to be defined in the rule No. described above. Design rules relating to the placement or movement of parts 1 to 100 and the rule No. 101-2
00 table design rule and rule N
o. Design rules for design calculations 201 to 300,
Rule No. Design rules for changing attribute values of parts 301 to 350 and rule Nos. 351 to 999, and design rules are selected from design rules related to other routine procedures. As a result, the user interface 2 sets the last rule No. of the design rule already stored in the design rule database 1 for the specified type. Of the next rule No. Is set automatically.

In the next step 12, the user sets the type of reference data in the design rule defined by the above type 1 = point, type 2 = straight line, type 3 = curve, type 4
= Point sequence, type 5 = numeric value, type 6 = character, type 10 = matrix, etc., and one or more of them are selected and specified, and the number of reference data that can be taken is set. Specify the name of the standard part to be placed. Thus, the design rule execution module 3
When executing the design rule defined this time, as shown in FIG. 1, various data such as shape data relating to a standard part having a corresponding name can be extracted from the design information.

In the next step 14, the user specifies the constraint conditions (movement type) in the design rule
Type 0 = co-movement in x and y directions, type 1 = x as required
Fixed value, Type 2 = Fixed y value, Type 3 = Curve constraint, Type 4
= Surface constraint, type 5 = one or more of region constraints and the like are selected and designated. If no constraint is specified, a standard constraint defined in advance according to the type of design rule is used.

In the next step 15, the user designates the priority of the design rule to be defined. Unless otherwise specified, the order of design rule designation at the time of execution of a design rule described later is set as the priority order. Then, in a succeeding step 16, other necessary conditions are designated as required. The necessary conditions include designation of a layer in which the plurality of design rules are collectively stored when collectively storing the plurality of design rules facilitates handling.

In the last step 16, the user instructs to save the defined design rule, whereby the user interface 2 causes the design rule database 1 to save the defined design rule.

FIGS. 11 to 14 show the procedure for designing production equipment by the CAD system of this embodiment after storing various design rules in the design rule database 1 as described above. FIG. 11 is a flowchart showing an example of a case where a user is arranged. In this case, a user who is a designer first uses FIG.
In step 21, a series of design rules to be executed are sequentially selected and designated from a design rule list as shown on the right side of the step.

In the next step 22, as shown on the right side of the step, the user sets a reference used in each of the series of design rules specified in step 21, such as a procurve instruction, a blank size instruction, and a mold center instruction. Specify the specific position and specific numerical value of the data. In this embodiment, the reference data is specified after designating a series of design rules, so that it is convenient when the same reference data is used for a plurality of design rules. Every time one design rule is specified in step 21, the procedure of specifying reference data used in the design rule in the next step 22 may be repeated.

In the next step 23, the design rule execution module 3 executes one of the above-described series of design rules in accordance with the reference data in the order of priority (in the order of designation of the design rule when no priority is assigned). Run the rule,
As shown on the right side of the step, for example, the part name K58
25 gauge plates G are arranged perpendicularly to the procurve P under the curve constraint that the procurve (contour line) P of the blank to be processed is in contact with the procurve P as reference data, and the possible arrangement range is (x1, y1, z1). ~ (X2, y
Based on the data of the design rule such as (2, z2), layout (arrangement) processing of the standard parts registered in the design rule is performed, and thereafter, the process proceeds to step 24 in FIG.

FIGS. 12 to 14 show a process in which the design rule execution module 3 checks the interference of the standard components arranged by the process of FIG. 11 and moves the standard components when there is interference. Yes, in step 24 of FIG.
For example, in the case of the gauge plate G, as shown in the right side of the step, a two-dimensional bit map indicating the existing range of the arranged standard parts is created. Next Step 25
In the case where two gauge plates G1 and G2 are sequentially arranged, for example, as shown in the right side of the step, using the above-described bit map, a standard part arranged earlier, for example, a gauge plate G1 and a standard part arranged this time are used. A rough interference check is performed to check the interference (overlap) between two-dimensional bitmaps with a component, for example, a gauge plate G2.

If there is no interference between the bitmaps, the process proceeds to step 37 described later. However, as in the case of the two gauge plates G1 and G2 shown on the right side of step 25, there is interference between the bitmaps. If so, step
Proceeding to step 27, as shown on the right side of the step for the case of the two gauge plates G1 and G2, the standard component arranged earlier, for example, the gauge plate G1, and the standard component arranged this time, for example, the gauge plate G2 Of the three-dimensional solid data (overlap of two solid data in the same space).

If there is no interference between the solid data as a result of the detailed interference check, a step described later is performed.
Proceed to 37. If there is interference between the solid data, as in the overlapping portion IS in the case of the two gauge plates G1 and G2 shown on the right side of step 27, step 29 in FIG.
In this step 29, the bit map of the interference part between the two standard parts, such as the interference part IB composed of the bit maps B1 to B5 in the case of the two gauge plates G1 and G2 shown on the right side of the step, Is extracted.

In the next step 30, it is checked whether or not there is a bitmap of the standard component previously arranged around one of the extracted bitmaps. For example, the two gauge plates G1 and G2 shown on the right side of the step
In the case of, the bitmap B0 of the gauge plate G1 exists at the left, diagonally lower left and lower left of the extracted bitmap B1. In a succeeding step 31, a search is made for the direction in which the range in which the bitmap is open around the bitmap B1 (the range in which the bitmap of the standard component that has already been placed does not exist) is the widest. And the moving direction. For example, in the case of the extracted bitmap B1 for the two gauge plates G1 and G2 illustrated on the right side of the step, the upper right direction indicated by the arrow is the widest direction in which the bitmap is open. There is no range where the bitmap is open (all are filled)
The moving direction is not determined for the bitmap.

If the steps 30 and 31 are repeatedly executed for the interfering bitmaps, for example, all the bitmaps B1 to B5 in the case of the two gauge plates G1 and G2 shown on the right side of the step 29, Next, the process proceeds to step 32, in which the direction of the vector sum of the moving directions of all the bitmaps of the interference part is set as the temporary movement direction of the entire interference part. For example, in the case of the interference site IB composed of the extracted bitmaps B1 to B5 for the two gauge plates G1 and G2 illustrated on the right side of the step, the right direction indicated by the arrow MS is the temporary movement direction of the entire interference site. .

Thereafter, the process proceeds to step 33 in FIG. 14, in which the actual moving direction is determined in consideration of the temporary moving direction vector and the constraint condition. For example, in the case of the interference part IB between the two gauge plates G1 and G2 shown on the right side of the step, the provisional movement direction vector indicated by the arrow MS, the constraint condition of contacting the procurve P, and the arrangement perpendicular to the procurve P Based on the constraint condition, the direction indicated by the arrow MR along the procurve P is the actual moving direction.

In the next step 34, the bit map of the entire interference part is shifted by one cell in the actual moving direction in order to obtain the moving distance. For example, in the case of the interference site IB shown on the right side of the step, the interference site IB moves in the actual movement direction indicated by the arrow MR along the pro-curve P.
Will be shifted by one cell. In a succeeding step 35, it is checked whether or not an area line provided around the above-mentioned interference part and separated by a preset interference margin interferes with the bit map of the standard component already arranged. For example, in the case of the interference site IB shown on the lower right side of the step, an area line IR provided around the interference area IB by an interference margin is provided.
Is checked whether it interferes with the bit map of the gauge plate G1 placed earlier. When the interference occurs, the process returns to step S34, and the interference portion is further shifted by one cell in the actual movement direction. When the interference does not occur, the process proceeds to step S36.

In step 36, it is considered from the result of the determination in step 35 that the arrangement data has already been lost around the interference part by the interference margin, so that the bit map of the standard parts already arranged The distance along the actual movement direction between the and the interference part bit map is obtained, the distance is determined as the movement distance, and the standard component placed this time is moved in the actual movement direction by the movement distance. Let it. For example, in the case of the interference site IB shown on the right side of the step, the distance MD between the previously arranged gauge plate G1 and the bitmap is the movement distance of the gauge plate G2, which is the standard component arranged this time.

Thus, after the interference of the standard parts arranged this time has disappeared, or if there is no interference in steps 26 and 28, the process proceeds to step 37 in FIG. It is determined whether or not all of the design rules have been executed. If there are design rules that have not been executed yet, the process proceeds to step 23 in FIG. 11 and the above-described processing is repeated. Has been executed, the processing procedure ends. Although the above-described example is for laying out standard components, the same processing is performed when other types of design rules are executed.

FIG. 15 shows another example in which standard parts are arranged by the CAD system of this embodiment. In this example, a punch as a standard part is used as shown in FIG. It is assumed that one PA is arranged and a plurality of bolts PB as standard parts for fixing the punch PA are arranged. In performing such an arrangement, first, as shown in FIG. 15B, the design rule No. shown in FIG. 101, “Execute a real-value search on a table based on input reference data, and output the search result as reference data”
Using this design rule, enter the punch diameter (PRC) of this time = 4.1 mm as the reference data and the outer diameter of the collar (TSUBA) = 1
3.6 mm, height (BN) = 14.0 mm, and punch height (BD) = 10.0 mm are obtained as output data, and the dimensions of each part of the punch are temporarily stored in a storage device.

Next, as shown in FIG.
The design rule No. shown in FIG.
The layout position (coordinates) (x = 0, y =
(0, z = 0), and the punch PA in which each parameter is in the initial value state is arranged at the above-described layout position.
As shown in FIG. 7, the design rule No. shown in FIG. Using a design rule for changing attribute values of graphic data based on the input reference data 301, the dimensions of each part of the punch previously stored in the storage device are input as reference data. The dimensions of each part of the punch above the punch
Deform PA parametrically.

Next, as shown in FIG.
Of the design rule No. shown in FIG.
Using the design rule of “Execute the four arithmetic operations based on the input reference data and output the calculation result as the reference data” of 201, input the collar outer diameter A and the punch diameter B as the reference data, and change the bolt arrangement. A bolt arrangement position radius C, which is a parameter for performing the calculation, is calculated by a calculation formula C = (A +
B) Calculate by $ 4.

Finally, as shown in FIG. 15 (f), the design rule No. shown in FIG. 11 using a design rule of “moving data in a complex coordinate system”, a point O located at the layout position and a bolt arrangement position radius C as reference data.
And the bolt arrangement angle θ are input, and the process of arranging the bolt PB at a predetermined position is repeated by the number of bolts PB while changing the bolt arrangement angle θ.

If the series of design rules are set by the user first using the user interface 2,
The design rule execution module 3 can sequentially execute the design rules and automatically perform the above-described placement of the punch PA and the bolt PB without user intervention.

FIG. 16 shows still another example in which standard parts are arranged by the CAD system of this embodiment. In this example, a key groove KY as a standard part is provided.
From the point Pymin on the substrate where the y-coordinate value of the mold portion PR is the maximum, y
Separated by a predetermined distance L in the direction and x = 0 (mold center)
It shall be arranged at the position of. In performing such an arrangement, here, the keyway KY is defined as shown in FIG.
Design rule No. shown in FIG. Using the design rule of “moving according to the maximum or minimum of the specified range of the reference curve” of 3, the specified range is set as the range including the mold shape part PR,
A procurve P and a separation distance L of the mold portion PR are inputted as reference data, and as shown in FIG.
A key groove KY is arranged at a position apart from min by a distance L in the y direction and at x = 0 (mold center).

FIG. 17 shows still another example in which standard parts are arranged by the CAD system of this embodiment. In this example, a blank procurve (contour line) shown by a two-dot chain line in the figure is shown. By appropriately using the above-described design rules regarding the arrangement or movement of parts with reference to P, the U-groove UG for bolting to fix the die substrate to the bolster of the press machine, and the upper die for the lower die The distance piece DP for determining the position of the bottom dead center, the gauge plate G for positioning the blank, and the cushion pin retainer CR for the cushion pin for elastically holding the blank holder are automatically put in place. Have been placed.

After a plurality of design rules are sequentially executed as described above to generate data for generating a solid model of a production facility such as a press die, the CAD system of this embodiment is shown in FIG. As described above, when the user requests, the simulation module 4 performs the operation simulation of the production equipment by using the generated solid data, for example, checking the clearance by matching the upper and lower dies of the press die, and various functions. Check. In the CAD system of this embodiment, FIG.
As shown in (1), when the user requests, the drawing conversion module 5 converts the generated solid data into two-dimensional drawing data, thereby facilitating the production of the production equipment.

Thus, according to the CAD system of this embodiment, as shown in FIG. 18 (a), the blogger has the functions of the design rule database 1, the user interface 2, and the design rule execution module 3. It is only necessary to create a program to configure a general-purpose production equipment design CAD system that has
Since the D system can be easily dedicated to the CAD system for designing production equipment having desired functions by the user, it is not necessary to secure a large number of specialized programmers who fully understand the design of production equipment such as molds. Thus, it is possible to construct a CAD system for production equipment design capable of improving efficiency in a large range including a concept design.

Further, according to the CAD system of this embodiment, the rule No. is added to a plurality of types of design rules. 1 to N
o. Design rules relating to the placement or movement of parts up to 100; No. 101 to No. 101 Design rules for table search up to 200; No. 201 to No. No. 300 and the design rules for design calculations up to No. 300. No. 301 to No. Since the design rule relating to the change of the attribute value of the component up to 350 is included, as described above, the user inputs, for example, the type and position data of the component as the reference data to be applied to the parameter, and Instructing the design rule execution module 3 to arrange or move an arbitrary part to an arbitrary position according to an arrangement or movement design rule, or input, for example, attribute value data such as a part type and dimensions of each part as the reference data. By causing the design rule execution module 3 to perform parametric deformation of an arbitrary component according to the design rule for changing the attribute value of the component, or by inputting the type of the component as the reference data, for example, The design rule execution module 3 can perform a table search for obtaining the dimensions of each part of an arbitrary part. By inputting the dimension data of a part as data, the design rule execution module 3 can calculate the arrangement of other parts and the like according to the design rule of the design calculation. A CAD system having necessary representative functions can be easily constructed, and a conceptual design can be easily performed using the CAD system.

According to the CAD system of this embodiment, the rule No. is included in the types of design rules. 351 to N
o. Since design rules for design procedure calls and other routine procedures up to 999 are further included, the design rule execution module 3 executes several other design rules in the design procedure. Since the secondary design procedure including the design rule can be called, the design procedure to be executed by the design rule execution module can be hierarchized, and the setting of the design procedure can be facilitated.

Further, according to the CAD system of this embodiment, the design rule execution module 3 searches for a position where the interference does not occur when the standard component placed or moved based on the design rule causes the interference. Automatically place or move the standard part at that position, even if the design rule execution module 3 automatically executes the design procedure based on the input from the user, the interference of the part with the existing structure etc. Can be automatically eliminated, and a CAD system that requires a long time can be automatically and reliably performed.

Although the present invention has been described with reference to the illustrated examples, the present invention is not limited to the above examples. For example, in the above embodiment, the CAD system was applied to mold design. CAD for production line design etc.
It goes without saying that the system can be applied.

[Brief description of the drawings]

FIG. 1 is a system diagram showing the configuration of an embodiment of a CAD system for designing production equipment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a design rule used in the embodiment.

FIG. 3 is an explanatory diagram showing an example of a design rule used in the embodiment.

FIG. 4 is an explanatory diagram showing an example of a design rule used in the embodiment.

FIG. 5 is an explanatory diagram showing an example of a design rule used in the embodiment.

FIG. 6 is an explanatory diagram showing an example of a design rule used in the embodiment.

FIG. 7 is an explanatory diagram showing an example of a design rule used in the embodiment.

FIG. 8 is an explanatory diagram showing an example of a design rule used in the embodiment.

FIG. 9 is an explanatory diagram showing a configuration of a design rule used in the embodiment.

FIG. 10 is a flowchart illustrating a processing procedure for defining the various design rules in the embodiment.

FIG. 11 is a flowchart illustrating a processing procedure when executing the various design rules in the embodiment.

FIG. 12 is a flowchart showing a processing procedure following the processing procedure shown in FIG. 11;

FIG. 13 is a flowchart showing a processing procedure following the processing procedure shown in FIG. 12;

FIG. 14 is a flowchart showing a processing procedure following the processing procedure shown in FIG.

FIG. 15 is an explanatory diagram illustrating a processing procedure when arranging standard parts by executing the design rule in the embodiment.

FIG. 16 is an explanatory diagram showing another example of a processing procedure when arranging standard parts by executing the design rule in the embodiment.

FIG. 17 is an explanatory diagram showing still another example of the processing procedure when arranging standard parts by executing the design rule in the embodiment.

FIG. 18 is an explanatory diagram showing a comparison between the CAD system of the present invention and the above-described embodiment and a method of constructing a conventional CAD system.

[Explanation of symbols]

 1 Design Rule Database 2 User Interface 3 Design Rule Execution Module 4 Simulation Module 5 Drawing Conversion Module

Claims (4)

[Claims] 1. A design rule database that stores a plurality of types of design rules that parametrically define the work content of one work unit, and that the design rules are input and stored in the design rule database. At the same time, the user specifies the type of design rule to be used from among the design rules stored in the design rule database and inputs reference data to be applied to the parameters of the design rule to be used. A user interface, and a design rule execution module that sequentially applies the input reference data to the parameters of the plurality of design rules based on the input specification, and sequentially executes the design rules. Characteristic CAD system for production equipment design. 2. The method according to claim 1, wherein the plurality of types of design rules include placement or movement of parts, change of attribute values of parts, table search, and design calculation. CAD system for production equipment design. 3. The CAD system for production equipment design according to claim 2, wherein said plurality of types of design rules further include a call of another design rule. 4. The design rule execution module searches for a position where no interference occurs when a component placed or moved based on the design rule causes interference, and places the component at that position. The CAD system for designing production equipment according to any one of claims 1 to 3, wherein the CAD system is moved.