JP2008146595A - Design evaluation device and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a design evaluation device and program that can measure the dimension based on designed three-dimensional CAD (Computer Aided Design) data and can evaluate measuring items without omission even if the dimension of each part for an evaluating object cannot be measured automatically. <P>SOLUTION: A measurement control means 12 reads an execution file corresponding to each measuring item of a part to be evaluated from an execution file storing means 11, and sequentially executes it. The execution file is created by incorporating a measurement command and guidance included in the CAD according to the contents of each measuring item. An operator 2, following a command of a guidance, commands the measuring position of the shape of the part to be evaluated formed of the CAD data. A measurement result acquiring means 14 acquires the measurement result measured by the measurement command, and a measurement result evaluation means 15 evaluates whether the acquired measurement result establishes the condition of a dimension constraint 404. An evaluation result display device 17 displays the evaluation result on a display section 132. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a design evaluation apparatus capable of evaluating the dimensions of a part constituting a designed product, and in particular, a design evaluation apparatus capable of evaluating a dimension indicated by design data of a product designed based on a design rule. And program.

  CAD (Computer Aided Design) systems are widely used as computer-aided design support devices. In particular, in recent years, 3D (3-Dimensions) -CAD capable of generating a solid model or a surface model has been widely used and designed. The 3D-CAD stores parameter values such as the generation method, history, and dimensions of these models, and automatically calculates and corrects another model by correcting the history or parameter value. Some have a parametric function.

  With respect to the designed design data, it is necessary to finally evaluate the design for particularly important items. In many of the conventional general evaluations, a checklist is created using paper or electronic data, and a designer or other evaluator uses a CAD command to measure the dimensions according to the evaluation items described in the checklist. The measurement result is checked and recorded.

  Recently, a template function is frequently used as a function that maximizes the parametric function of 3D-CAD. The template function is designed when a final product structure is determined in advance, and a designer changes or modifies parameters such as dimension values embedded in reference data to design a desired product shape. It is a function. The reference data is data created with a standard structure for the final product structure.

  By using such a template function, the design man-hour can be reduced. Further, by using the template function, it becomes possible to recognize a specific part, for example, a target part of the evaluation item, from the parameters embedded in the reference data, extract the design value of the specific part, A design support apparatus capable of performing evaluation has been proposed.

  As a first conventional technique for evaluating a designed product, there is a product design apparatus. This product design apparatus stores design procedure information for designing a product and constraints on the structure of the product, and performs design of the design based on the design procedure information when design information on a predetermined product is received. . Then, it is determined whether the designed structure satisfies the constraint condition, and the determination result is displayed. The user can see the determination result and change the designed structure so as to satisfy the constraint conditions (see, for example, Patent Document 1).

  As a second conventional technique for evaluating a designed product, there is a design support apparatus. This design support device stores the dimension requirements and structure rule requirements required for the product in association with the conditions for which those requirements are required, and inputs them in response to the input of the conditions from the operator. Dimension requirements and structure rule requirements corresponding to the specified conditions are extracted. Then, the design dimension information and the design rule information of the designed product are acquired, and it is determined whether or not the acquired design dimension information and the design rule information satisfy the extracted dimension information and the structure rule, respectively. To do. The design rule information is design rule information for realizing a predetermined structure rule used in designing. It is possible to efficiently determine whether or not the design satisfies the necessary requirements (see, for example, Patent Document 2).

JP 2003-122797 A JP 2005-309522 A

  In the case of manual design check using a conventional checklist, the designer or other evaluator uses the CAD command to measure the dimensions of each part for each checklist evaluation item, and compares the measurement result with the constraint value. Must be evaluated and is inefficient. The template function evaluates whether or not the dimensional information extracted by specifying the design data part according to the parameters embedded in advance in the template whose final product structure has been determined in advance satisfies the constraint conditions. It is assumed that this is done.

  However, the form of the product always changes with time and cannot always be handled by a design using a uniform template. If you want to change the shape greatly depending on the product, even if the surface, edge, or dimension value is set as the target of recognition in advance, the surface, edge, or dimension value may be deleted or changed to a different object. May be necessary. That is, there are cases where the parameters cannot be used as they are, so that the conventional technique requires manual work for the evaluation of the design dimensions, and much effort is required to construct or update the template.

  In the case of a new structure in which a template cannot be used, the designer needs to create new data each time. Furthermore, since there is no parameter for specifying the part, the designer himself must measure and evaluate the constraint value.

  The first conventional technique compares designed structural design CAD data with constraint conditions. However, Patent Document 1 describes how to measure dimensions when comparing dimensions. Absent. The second conventional technique compares the design dimension already measured with the dimension requirement for the designed design dimension, but Patent Document 2 describes how to measure the design dimension. Not. Therefore, in the case of a new design or a design involving a large change, it is considered that any of the conventional techniques cannot automatically measure dimensions, and in that case, there is a problem that comparative evaluation cannot be performed. In the case of a new design or a design with major changes, it is considered that the dimensions of each part of the product must be measured and evaluated by a user using a CAD command for measuring the dimensions. When a user performs measurement using a CAD command, an operation error such as measurement omission may occur.

  An object of the present invention is to provide a design evaluation capable of measuring a dimension based on the designed three-dimensional CAD data and evaluating a measurement item without omission even if the dimension of each part to be evaluated cannot be automatically measured. It is to provide a device and a program.

The present invention is a design evaluation apparatus that evaluates the dimensions of parts constituting a designed product using a CAD system having a measuring means for measuring the dimensions of a three-dimensional shape represented by three-dimensional CAD data.
Shape data storage means for storing three-dimensional CAD data representing the shape of each part constituting the product;
Evaluation item storage means for storing dimension measurement item information representing a dimension measurement item for each part constituting the product, and constraint condition information representing a condition that is associated with the measurement item and restricts the dimension of each part,
A measuring position specifying means for specifying a measuring position;
3D CAD data to be evaluated is read out from the shape data storage means, and the dimensions of the shape indicated by the read 3D CAD data are measured for the measurement item indicated by the dimension measurement item information stored in the evaluation item storage means. Measurement control means for causing the measurement means to measure at a measurement position designated for each measurement item by the means;
The measurement result information indicating the result of measurement performed by the measurement control means is the condition indicated by the restriction condition information of the measurement item corresponding to the measurement result information among the restriction condition information stored in the evaluation item storage means. A measurement result evaluation means for evaluating conformity;
An evaluation result display means for displaying evaluation result information representing a result evaluated by the measurement result evaluation means.

  According to the present invention, in evaluating the size of a part constituting a designed product using a CAD system having a measuring means for measuring the size of the three-dimensional shape represented by the three-dimensional CAD data, The data storage means stores three-dimensional CAD data representing the shape of each part constituting the product, and the evaluation item storage means represents dimension measurement item information representing a dimension measurement item for each part constituting the product, and the measurement. Restriction condition information that is associated with the item and represents a condition that restricts the size of each part is stored, and the measurement position is designated by the measurement position designation means. Next, the measurement control means reads the three-dimensional CAD data to be evaluated from the shape data storage means, and the dimensions of the shape indicated by the read three-dimensional CAD data are the dimensions stored by the evaluation item storage means. The measurement means indicated by the measurement item information is measured by the measurement means at the measurement position designated for each measurement item by the measurement position designation means. Further, the measurement result information representing the result of the measurement control means measuring the measurement means by the measurement result evaluation means is the measurement item corresponding to the measurement result information among the constraint condition information stored in the evaluation item storage means. The evaluation result display means displays the evaluation result information indicating the result evaluated by the measurement result evaluation means, so that the dimensions of each part to be evaluated are automatically set. Even if it cannot be measured, the dimensions based on the designed three-dimensional CAD data can be sequentially measured based on the accumulated evaluation items, and important evaluation items can be measured without omission. Since it is characterized in that the operator selects and designates a measurement position of CAD data and performs measurement, it is not necessary to prepare a template in which parameters are embedded in advance. Furthermore, it is possible to evaluate a new structure or design data whose shape has been greatly changed.

The present invention further includes execution file storage means for storing execution file information including measurement means specifying information for specifying measurement means for measuring each measurement item among the measurement means,
The evaluation item storage means stores execution file specifying information for specifying execution file information for each measurement item indicated by the dimension measurement item information,
The measurement control means includes each measurement item indicated by the dimension measurement item information stored in the evaluation item storage means, and execution file specifying information corresponding to each measurement item is included in the execution file information stored in the execution file storage means. The measurement means specified by the measurement means specifying information included in the execution file information shown is measured.

  According to the present invention, the execution file storage unit stores execution file information including measurement unit specifying information for specifying a measurement unit for measuring each measurement item among the measurement units, and the evaluation item storage unit stores the dimension measurement. Execution file specifying information for specifying execution file information is stored for each measurement item indicated by the item information, and each measurement item indicated by the dimension measurement item information stored in the evaluation item storage means by the measurement control means is an execution file. Of the executable file information stored in the storage means, the measurement means specified by the measurement means identification information included in the executable file information indicated by the executable file identification information corresponding to each measurement item causes the measurement item to be measured. It is not necessary to indicate a measurement means corresponding to the above, for example, a CAD command.

The present invention further includes a display unit for displaying a shape indicated by the evaluation target three-dimensional CAD data read from the shape data storage means,
The execution file information includes guidance information representing guidance for causing the shape displayed on the display unit to designate a measurement position corresponding to each measurement item,
The measurement control means displays guidance information included in the execution file information when the measurement means specified by the measurement means identification information included in the execution file information indicated by the execution file identification information corresponding to each measurement item is used for measurement. It is characterized by being displayed on the part.

  According to the present invention, a display unit that displays the shape indicated by the three-dimensional CAD data to be evaluated read from the shape data storage unit is further included, and the executable file information is displayed for the shape displayed on the display unit. Measuring means specified in the execution file information indicated by the execution file specifying information corresponding to each measurement item by the measurement control means, including guidance information indicating guidance for designating the measurement position corresponding to each measurement item. When the measurement means specified by the information is used for measurement, the guidance information included in the execution file information is displayed on the display unit, so that the user's operation can be specifically guided. That is, since the guidance information incorporated in the execution file is displayed on the display means every time the measurement item changes, the user's operation can be specifically guided.

  The present invention further includes an evaluation result storage means for storing the evaluation result information.

  According to the present invention, since the evaluation result information is stored by the evaluation result storage means, the evaluation results can be accumulated.

The present invention also includes a part designating unit for designating a part to be displayed;
The evaluation result information stored in the evaluation result storage means further includes past information display means for reading out and displaying the evaluation result information of the part designated by the part designation means from the evaluation result storage means, To do.

  According to the present invention, the part to be displayed is designated by the part designating unit, and the part of the part designated by the part designating unit is included in the evaluation result information stored in the evaluation result storage unit by the past information display unit. Since the evaluation result information is read from the evaluation result storage means and displayed, the user can select and display the evaluation result of the desired part from the past evaluation results.

Further, the present invention is a program for evaluating the dimensions of a part constituting a designed product using a CAD system having a measuring means for measuring the dimensions of a three-dimensional shape represented by three-dimensional CAD data. ,
The 3D CAD data to be evaluated is read from the shape data storage unit that stores the 3D CAD data representing the shape of each part constituting the product, and the product has the dimensions of the shape indicated by the read 3D CAD data. Dimension measurement stored in an evaluation item storage unit that stores dimension measurement item information that represents a measurement item of a dimension for each part and constraint condition information that is associated with the measurement item and represents a condition that restricts the dimension of each part. For the measurement item indicated by the item information, a measurement control step for causing the measurement means to measure at the measurement position designated for each measurement item by the measurement position designation means for designating the measurement position;
The measurement result information indicating the result of measurement by the measurement means in the measurement control step is the condition indicated by the constraint condition information of the measurement item corresponding to the measurement result information among the constraint condition information stored in the evaluation item storage unit. A measurement result evaluation process for evaluating conformity;
It is a program for causing a computer to execute an evaluation result display step for displaying evaluation result information representing a result evaluated in a measurement result evaluation step.

  According to the present invention, there is provided a program for evaluating the dimensions of parts constituting a designed product by using a CAD system having a measuring means for measuring the dimensions of a three-dimensional shape represented by three-dimensional CAD data. The three-dimensional CAD data to be evaluated is read from the shape data storage unit that stores the three-dimensional CAD data representing the shape of each part constituting the product, and the dimensions of the shape indicated by the read three-dimensional CAD data are determined for the product. Stored in an evaluation item storage unit that stores dimension measurement item information that represents a measurement item of a dimension for each part that constitutes, and constraint condition information that is associated with the measurement item and represents a condition that restricts the dimension of each part. The measurement item indicated by the dimension measurement item information is measured by the measurement unit at the measurement position designated for each measurement item by the measurement position designation unit for designating the measurement position. A measurement control process to be performed, and measurement result information representing a result of measurement performed by the measurement means in the measurement control process is a constraint on a measurement item corresponding to the measurement result information among constraint condition information stored in the evaluation item storage unit Provided as a program for causing a computer to execute a measurement result evaluation process for evaluating whether the conditions indicated by the condition information are met and an evaluation result display process for displaying evaluation result information representing the results evaluated in the measurement result evaluation process Therefore, even if the dimensions of each part to be evaluated cannot be measured automatically, the dimensions based on the designed 3D CAD data can be measured sequentially based on the accumulated evaluation items. Can be measured without omission. Since it is characterized in that the operator selects and designates a measurement position of CAD data and performs measurement, it is not necessary to prepare a template in which parameters are embedded in advance. Furthermore, it is possible to evaluate a new structure or design data whose shape has been greatly changed.

  According to the present invention, even if the dimensions cannot be measured automatically, evaluation based on the designed three-dimensional CAD data can be performed by the user including the important evaluation items only by designating the part by guiding the apparatus. Items can be evaluated without omission. Furthermore, since measurement is performed by instructing the measurement position to the user for each measurement item of the specified part, it is not necessary to prepare a template in which a parameter for specifying the measurement position is embedded in advance. Furthermore, even in the case of a new design or a design that greatly changes the shape, that is, when the template cannot be used, it is possible to measure and evaluate the dimensions.

  Further, according to the present invention, since the user does not need to instruct measurement means corresponding to the measurement item, for example, a CAD command, the user can evaluate the dimension with a simple operation.

  According to the present invention, the user's operation can be specifically guided, so that the user can easily specify the measurement position.

  Further, according to the present invention, evaluation results can be accumulated. The dimension information of the past models is useful knowledge information, and the evaluation results are accumulated whenever the measurement and evaluation are performed. Therefore, the knowledge information can be automatically updated.

  Further, according to the present invention, the user can select and display the evaluation result of the desired part from the past evaluation results, so that the past measurement result can be easily obtained for the desired part at the time of new design. You can browse.

  In addition, according to the present invention, by using this program, it is not necessary for the operator to evaluate the measurement results themselves, and the measurement can be performed sequentially based on the accumulated evaluation items. Can be measured.

  FIG. 1 is a functional block diagram of a design data evaluation apparatus 1 according to an embodiment of the present invention. The design data evaluation apparatus 1 which is a design evaluation apparatus is stored in advance for each part by designating a part to be evaluated among parts constituting a product designed in advance on a CAD (Computer Aided Design) system. Among the evaluation items, the evaluation item of the instructed part is an apparatus that uses design data to evaluate in cooperation with a CAD system (hereinafter also referred to as “CAD”). The present invention is not limited to the specific examples described below.

  The CAD system can generate a solid model or a surface model. The generation of these models is based on 3D (3-Dimensions) -CAD, which has a parametric function, and is expanded using the customization function of 3D-CAD, or an additional program is built outside of 3D-CAD. This can be realized by interlocking with 3D-CAD. The parametric function stores parameter values such as the generation procedure, generation history, and dimensions for generating a solid model or surface model, and automatically calculates and corrects the model by correcting the history or parameter value. This is a function that can be generated.

Prior to describing the functional block diagram, the hardware configuration of the design data evaluation apparatus 1 will be described. The design data evaluation apparatus 1 is realized by a computer system, for example. That is, the design data evaluation apparatus 1 includes an input unit 131 including a keyboard or a mouse for inputting instructions and data, a liquid crystal panel or a CRT (
Display unit 132 composed of a Cathode Ray Tube), a CPU (Central Processing Unit) (not shown) that performs various control functions, and a ROM (Read Only) that functions as a storage unit
Memory (RAM) and RAM (Random Access Memory) semiconductor memory, HDD (Hard Disk Drive) functioning as a large-capacity storage unit and other storage devices not shown, connected to other devices or other systems, And an I / O (Input / Output) interface unit (not shown) for transmitting and receiving data.

  If necessary, an output device other than the display unit 132, for example, a printing device such as a printer, is provided so that data can be output, and an external memory such as a CD-ROM (Compact Disk Read Only Memory), a flexible disk, or an IC (Integrated Circuit) By providing a recording / playback device to a recording medium such as a card, or by adding a communication function using a communication line such as a LAN (Local Area Network) to enable data transmission / reception with other devices It is desirable that data can be transmitted and received when recording or reproduction of a program or external data is necessary.

In this computer system, a CAD system is operated, and the design data evaluation apparatus 1 operates in cooperation with this CAD system. Specifically, among the CAD commands possessed by the CAD system, the measurement result is obtained by using the CAD command for performing the measurement work. As a CAD command for performing measurement work, for example, PTC (
Parametric Technology Corporation) “Pro / ENGINEER” analysis and measurement commands can be used.

  The design data evaluation apparatus 1 includes an evaluation item storage unit 10, an execution file storage unit 11, a measurement control unit 12, an operation console 13, a measurement result acquisition unit 14, a measurement result evaluation unit 15, an evaluation result storage unit 16, and an evaluation result display unit. 17, a part designation unit 18, a past information display unit 19, a shape data storage unit 20, and a measurement position designation unit 21. The solid line connecting the components indicates the relationship between each component from when the part to be evaluated is specified until the evaluation is performed and the result is displayed, and the dotted line connecting the components is the accumulated The relationship between each component at the time of displaying the evaluation result selected from the past evaluation results displayed is shown.

  The evaluation item storage means 10 is constituted by a storage device (not shown), for example, and stores evaluation item information representing evaluation items for dimensions for each part indicated by design data in advance in a tabular form as an evaluation item table. The design data is 3D CAD data designed in advance on CAD, and includes 3D shape data representing the shape of each part constituting the product. The design data is stored in advance in the shape data storage means 20, for example, a storage device (not shown), but is not necessarily stored in a storage device (not shown). The design data is stored in a device other than the design data evaluation device 1 or stored in a recording medium. It may be recorded and acquired from there. The evaluation item table includes at least items of “design part name”, “measurement item name”, “executable file name”, and “dimension constraint”. “Design part name” is the name of the part constituting the product, “Measurement item name” is the name of the measurement item indicating the item whose dimensions are measured for each part, and “Execution file name” is described later. The name of the execution file, “dimension restriction” indicates a restriction condition that is a condition for restricting the dimension of each part for each measurement item. The constraint condition is a condition such as a range of dimensions to be satisfied by the measurement item of the part, for example.

  FIG. 2 shows an example of the evaluation item table 40 stored in the evaluation item storage unit 10 shown in FIG. The evaluation item table 40 is stored in the evaluation item storage unit 10. The storage device that stores the evaluation item table 40 may be a RAM that temporarily stores information, or an HDD that is recorded as a file.

  The first column of the evaluation item table 40 is the item of the design part name 401, the second column is the item of the measurement item name 402, the third column is the item of the execution file name 403, The fourth column is an item of the dimension constraint 404. FIG. 2 shows three measurement item names “boss diameter”, “boss hole diameter”, and “boss gradient” for the first design part name “boss shape”, and the execution file name. Are “mj_b_d”, “mj_b_h”, and “mj_b_dr”, respectively, and the dimension constraints are “6 ≦ x ≦ 7”, “x = 3.5”, and “x = 0.5”, respectively. For the second design part name “button and cover hole”, two measurement item names “thickness direction clearance” and “ambient clearance” are shown, and the execution file names are “mj_b_c_z” and “mj_b_c_a”, respectively. The dimension constraints are “x = 0” and “0.2 ≦ x ≦ 0.3”, respectively.

  The execution file storage unit 11 stores information for executing the measurement work on the CAD for each measurement item as an execution file in a storage device (not shown). The execution file incorporates a CAD command for performing the measurement work and guidance for prompting the operator 2 to appropriately perform the work, and is created so that the measurement work for each measurement item can be performed interactively with the operator 2.

  FIG. 3 shows the shape of the boss 30 to be evaluated by the design data evaluation apparatus 1 shown in FIG. The boss 30 has a circular edge 31 formed on the top thereof. For example, if it is a measurement item which measures the external dimension of the boss 30 shown in FIG. 3, the diameter of the edge 31 of the boss 30 may be measured. Therefore, the execution file is a program that executes an optimal CAD command selected from specific commands of the CAD in order to measure the outer edge of the boss. This executable file is a program that can be measured in the same manner as when the “diameter” of “edge” in the “measurement” measurement function is selected from the menu of the CAD and measured by the operator 2. Generated. The guidance for prompting the operator 2 to perform work is guidance that specifically guides the operation of the operator 2 such as “Please select the outer edge of the boss”.

Such an executable file is a customized function or API (
Application Protocol Interface). Furthermore, by using the event dump function that stores the entire operation history in CAD as a text file, create an operation history file for any operation, and execute the operation history file to perform dimension measurement work. It is also possible to implement. In either case, the created executable file needs to be stored in the evaluation item storage means 10 and prepared.

When the measurement control unit 12 is activated from the input unit 131 of the operation console 13 by the operator 2, the measurement control unit 12 reads the evaluation item table 40 stored in the evaluation item storage unit 10, and sets the design part name of the part designated as the evaluation target. The execution file indicated by the execution file name for each corresponding measurement item is read from the execution file storage unit 11 and executed sequentially.
The measurement position designating unit 21 has a function of causing the operator to instruct measurement points of CAD data via the input unit 131 such as a mouse when the measurement control unit 12 executes the execution file and guides the measurement to the operator. .

The operation console 13 includes an input unit 131 configured by, for example, a keyboard or a mouse for inputting various instructions and data, and a display unit 132 configured by, for example, a liquid crystal panel or a CRT. The input unit 131 appropriately receives an instruction and input from the operator 2, and the display unit 132 displays CAD data and guidance regarding data measurement by executing the program.
The measurement result acquisition unit 14 displays the guidance and executes the measurement command by the execution of the execution file by the measurement control unit 12, and receives the response of the operator, and acquires the measured measurement result from the CAD. And the acquired measurement result is memorize | stored in the form which adds to the evaluation item table 40. FIG.

  FIG. 4 shows an example of an evaluation item table 41 in which measurement results are added to the evaluation item table 40 shown in FIG. The evaluation item table 41 is a table obtained by adding the item of the measurement result 405 as the fifth column to the evaluation item table 40 shown in FIG. In FIG. 4, the measurement results are indicated as “6” for the measurement item name “boss diameter”, “3.5” for the measurement item name “boss hole diameter”, and the measurement item name “boss diameter”. “Slope” is indicated as “1.0”, the measurement item name “clearance in the thickness direction” is indicated as “0”, and the measurement item name “ambient clearance” is indicated as “0.3”.

  The measurement result evaluation unit 15 evaluates whether the measurement result acquired by the measurement result acquisition unit 14 satisfies a constraint condition. Specifically, the dimension constraint 404 and the measurement result 405 of the evaluation item table 41 illustrated in FIG. 4 are compared and evaluated for each measurement item, and the evaluation result is displayed in the sixth column of the evaluation item table 41. This is additionally recorded as an evaluation result 406.

  FIG. 5 shows an example of the evaluation item table 42 in which the evaluation result is added to the evaluation item table 41 shown in FIG. The evaluation result shown in FIG. 5 is indicated by “◯” indicating that the measurement constraint 405 is satisfied if the measurement result 405 is within the range of the size constraint 404 or coincides with the measurement result 405. If it does not match or does not match, it is indicated by “x” indicating that the dimensional constraint is not satisfied. In FIG. 5, the evaluation results are indicated as “◯” for the measurement item name “boss diameter”, “○” for the measurement item name “boss hole diameter”, and the measurement item name “boss gradient”. Is indicated by “X”, the measurement item name “clearance in the thickness direction” is indicated by “◯”, and the measurement item name “periphery clearance” is indicated by “◯”.

  The evaluation result storage unit 16 stores, as a file, an evaluation item table 43 in which the model name is added to the evaluation item table 42 in which the items of the evaluation result 406 are added by the measurement result evaluation unit 15. For example, if the CAD data parameter includes the model name, the model name may be extracted from the CAD data, or the operator 2 may input the model name when storing the evaluation item table 42 as a file. May be.

  FIG. 6 shows an example of the evaluation item table 43 in which the model name is added to the evaluation item table 42 shown in FIG. The “model name” 407 is shown in the upper part of the dimension constraint item, and the model name “MODEL_1” is shown in the upper part of the measurement result and the evaluation result.

  The evaluation result display unit 17 generates evaluation result information based on the information in the evaluation item table 43 stored in the evaluation result storage unit 16 and displays the generated evaluation result information on the display unit 132 of the operation console 13. The operator 2 can refer to the evaluation result information displayed on the display unit 132. The evaluation result information is displayed in a list form including at least a design part name 401, a measurement item name 402, a dimension constraint 404, a measurement result 405, and an evaluation result 406, as shown in FIG.

  FIG. 7 shows an example of the evaluation result information 50 displayed on the display unit 132 shown in FIG. The display contents are the same as the items excluding the item of the execution file name 403 in the evaluation item table 43 shown in FIG.

  The part designating unit 18 reads the design part name 401 in the first column in the measurement item table 43 stored in the evaluation result storage unit 16, and the operator 2 sets the design part name based on the read design part name. A menu for selection is generated and displayed on the display unit 132. In addition, when there are data of a plurality of models in the evaluation result storage means 16, the model name 407 of the evaluation item table 43 stored, that is, stored, is read, and the model name is selected based on the read model name. Are generated together and displayed on the display unit 132, and an input from the operator 2 is awaited. This function can also be created using a customization function or API of the CAD system.

  The past information display means 19 evaluates the past file stored in the evaluation result storage means 16 for the design part name and model name designated by the operator 2 in response to the menu generated and displayed by the part designation means 18. Measurement items, dimension constraints, measurement results, and evaluation results corresponding to the designated design part name and model name are extracted from the result table 43 and displayed on the display unit 132 of the operation console 130 in the form of a list.

  FIG. 8 shows an example of past evaluation result information 51 displayed on the display unit 132 shown in FIG. FIG. 8 shows the evaluation results of two types of the designated design part name “boss shape”, that is, the model name “MODEL_1” and the model name “MODEL_2”. For the measurement item names “boss diameter”, “boss hole diameter”, and “boss gradient”, the dimension constraints are “6 ≦ x ≦ 7”, “x = 3.5”, and “x = 0”, respectively. .5 ". The measurement result and evaluation result of MODEL_1 for each measurement item are “6” and “◯” for the measurement item name “boss diameter”, respectively, and “3” for the measurement item name “boss hole diameter”, respectively. .5 ”and“ ◯ ”, and the measurement item name“ boss gradient ”is“ 1.0 ”and“ x ”, respectively. The measurement result and evaluation result of MODEL_2 for each measurement item are “7” and “◯” for the measurement item name “boss diameter”, respectively, and “3” for the measurement item name “boss hole diameter”, respectively. .5 ”and“ ◯ ”, and the measurement item name“ boss gradient ”is“ 0.5 ”and“ ◯ ”, respectively.

  FIG. 9 is a flowchart of a design data evaluation process performed by the design data evaluation apparatus 1 shown in FIG. When the apparatus 2 is activated from the input unit 131 of the operation console 13 by the operator 2, the process proceeds to step S1.

  In step S1, which is a measurement item acquisition step, the measurement control unit 12 reads the evaluation item table 40 stored in the evaluation item storage unit 10. In step S2, which is an execution file reading step, the measurement control means 12 includes the measurement item name on the first line in the measurement item names of the parts to be evaluated among the measurement item names in the read design item table 40. The execution file described in the execution file name on the same line is read from the execution file storage unit 11. For example, in the case of the evaluation item table 40 shown in FIG. 2, an execution file with an execution file name “mj_b_d” with a measurement item name “boss diameter” is read.

  In step S3, which is a program execution step, the measurement control means 12 executes the execution file read in the execution file reading step. As described above, the execution file is created by incorporating the appropriate measurement command of the CAD, that is, the CAD command for performing the measurement work, and the guidance according to the content of the measurement item. It is only necessary to indicate the measurement position of the shape formed by the CAD data, for example, an edge, a point, a surface, or the like. For example, when the execution file with the execution file name “mj_b_d” on the first line of the evaluation item table 40 shown in FIG. 2 is executed, the “boss outline” is displayed on the CAD screen, that is, on the screen displayed on the display unit 32 by CAD. Select the edge "and display the synthesized guidance. The operator 2 may select the edge 31 of the boss 30 shown in FIG. 3 in accordance with the guidance instruction.

  In step S4 which is a measurement result acquisition step, the measurement result acquisition unit 14 acquires the measurement result measured by the measurement control unit 12 from the CAD. The acquired measurement result is stored in a form to be added to the evaluation item table 40. FIG. 4 shows an evaluation item table 41 as an example of the storage format. The measurement result is stored as the measurement result 405 in the fifth column of the evaluation item table 41.

  In step S5, which is a measurement result evaluation step, the measurement result evaluation means 15 evaluates whether the measurement result 405 in the fifth column of the evaluation item table 41 conforms to the condition of the dimension constraint 404 in the fourth column. Do. Then, the evaluation result is added as an evaluation result 406 in the sixth column of the evaluation item table 41. FIG. 5 is an evaluation item table 42 as an example of the storage format.

  In step S6, which is the next evaluation item step, it is confirmed whether or not a measurement item name exists in the evaluation item name in the evaluation item table. If the measurement item name exists, the process returns to step S2, and the execution file of the next measurement item is read. If the measurement item name does not exist, the process proceeds to step S7. In step S7, which is an evaluation result storage step, the model name is further added to the evaluation item table 42 in which the measurement result 405 and the evaluation result 406 are additionally written, and stored in the evaluation result storage means 16 as a file. The evaluation item table 43 shown in FIG. 6 is an example.

  In step S8, which is an evaluation result display step, the evaluation result display means 17 generates evaluation result information based on the evaluation item table 43 stored in the evaluation result storage means 16, and displays it on the display unit 132 of the operation console 13. . The operator 2 can confirm the evaluation result based on the evaluation result information displayed on the display unit 132. The evaluation result information displayed on the display unit 132 includes at least a design part name 401, a measurement item name 402, a dimension constraint 404, a measurement result 405, and an evaluation result 406, as shown in FIG. Is displayed.

  FIG. 10 is a flowchart of the design data evaluation result browsing process performed by the design data evaluation apparatus 1 shown in FIG. The design data evaluation result browsing process is a process of browsing past evaluation results. When a function that refers to a past evaluation result is selected, the process proceeds to step T1.

  In step T1, which is a menu display step, the part designating unit 18 reads the design part name 401 and the model name 407 from the evaluation item table 43 stored in the evaluation result storage unit 16, and the operator 2 designs the design part name and model name. A menu for selecting is generated and displayed on the CAD screen. In step T2, which is an input waiting step, it is determined whether there is an input of a design part name and a model name. If the design part name and model name are selected from the menu, it is determined that there is an input, and the process proceeds to step T3. If the design part name and model name are not selected from the menu, it is determined that there is no input, and the process returns to step T2. , And waits for the operator 2 to select the design part name and model name from the menu.

  In step T3, which is an evaluation result extraction step, the past information display means 19 uses the past evaluation result data stored in the evaluation result storage means 16, that is, the evaluation item table 43, for the design part name and model name selected by the operator 2. Then, the measurement items, dimension constraints, measurement results, and evaluation results corresponding to the selected design part name and model name are extracted. In step T4, which is an evaluation result display step, the past information display means 19 displays the measurement items, dimensional constraints, measurement results, and evaluation results extracted in the evaluation result extraction step on the display unit 132 of the operation console 13, for example as shown in FIG. 8 is displayed in the list form shown in FIG.

  The program according to the present invention is stored in a storage device (not shown) and executed by the design data evaluation device 1. Specifically, this program is a program for causing a computer, for example, a CPU (not shown) to execute each step of the flowcharts shown in FIGS.

  Thus, in evaluating the dimensions of the parts constituting the designed product using the CAD system having the measuring means for measuring the dimensions of the three-dimensional shape represented by the three-dimensional CAD data, first, the shape data storage is performed. The means stores three-dimensional CAD data representing the shape of each part constituting the product, and the evaluation item storage means includes dimension measurement item information representing a dimension measurement item for each part constituting the product, and the measurement item. The constraint condition information indicating the condition that restricts the size of each part is stored, and the measurement position is designated by the measurement position designating means. Next, the measurement control means reads the three-dimensional CAD data to be evaluated from the shape data storage means, and the dimensions of the shape indicated by the read three-dimensional CAD data are the dimensions stored by the evaluation item storage means. The measurement means indicated by the measurement item information is measured by the measurement means at the measurement position designated for each measurement item by the measurement position designation means. Further, the measurement result information representing the result of the measurement control means measuring the measurement means by the measurement result evaluation means is the measurement item corresponding to the measurement result information among the constraint condition information stored in the evaluation item storage means. The evaluation result display means displays the evaluation result information indicating the result evaluated by the measurement result evaluation means, so that the dimensions of each part to be evaluated are automatically set. Even if it cannot be measured, the dimensions based on the designed three-dimensional CAD data can be sequentially measured based on the accumulated evaluation items, and important evaluation items can be measured without omission. Since it is characterized in that the operator selects and designates a measurement position of CAD data and performs measurement, it is not necessary to prepare a template in which parameters are embedded in advance. Furthermore, it is possible to evaluate a new structure or design data whose shape has been greatly changed.

  In other words, even if the dimensions are not measured, evaluation based on the designed three-dimensional CAD data can be performed without the omission of evaluation items including important evaluation items by the user simply specifying the site by guidance of this device. Can be evaluated. Furthermore, since measurement is performed by instructing the measurement position to the user for each measurement item of the specified part, it is not necessary to prepare a template in which a parameter for specifying the measurement position is embedded in advance. Furthermore, even in the case of a new design or a design that greatly changes the shape, that is, when the template cannot be used, it is possible to measure and evaluate the dimensions.

  Furthermore, execution file information including measurement means specifying information for specifying a measurement means for measuring each measurement item among the measurement means is stored by the execution file storage means, and the dimension measurement item information indicates by the evaluation item storage means. Execution file specifying information for specifying execution file information is stored for each measurement item, and each measurement item indicated by the dimension measurement item information stored in the evaluation item storage unit is stored in the execution file storage unit by the measurement control unit. Since the measurement means specified by the measurement means identification information included in the execution file information indicated by the execution file identification information corresponding to each measurement item is measured among the executable file information to be measured, the user can perform the measurement corresponding to the measurement item. There is no need to indicate a means such as a CAD command. Therefore, the user can evaluate the dimensions with a simple operation.

  Furthermore, a display unit that displays the shape indicated by the three-dimensional CAD data to be evaluated read from the shape data storage unit is further included, and the execution file information includes each of the shapes displayed on the display unit. Guidance information indicating guidance for designating the measurement position corresponding to the measurement item is included, and the measurement control unit specifies the measurement unit identification information included in the execution file information indicated by the execution file identification information corresponding to each measurement item. When the measurement means that performs the measurement, the guidance information included in the execution file information is displayed on the display unit, so that the user's operation can be specifically guided. That is, since the guidance information incorporated in the execution file is displayed on the display means every time the measurement item changes, the user's operation can be specifically guided. Therefore, the user can easily specify the measurement position.

  Furthermore, since the evaluation result information is stored by the evaluation result storage means, the evaluation results can be accumulated. The dimension information of the past models is useful knowledge information, and the evaluation results are accumulated whenever the measurement and evaluation are performed. Therefore, the knowledge information can be automatically updated.

  Furthermore, the part to be displayed is designated by the part designating unit, and the evaluation result information of the part designated by the part designating unit out of the evaluation result information stored in the evaluation result storing unit by the past information display unit. However, since it is read from the evaluation result storage means and displayed, the user can select and display the evaluation result of the desired part from the past evaluation results. Therefore, it is possible to easily browse past measurement results regarding a desired part at the time of new design.

  Furthermore, a program for evaluating the dimensions of a part constituting a designed product using a CAD system having a measuring means for measuring the dimensions of a three-dimensional shape represented by the three-dimensional CAD data, Read out the 3D CAD data to be evaluated from the shape data storage unit that stores the 3D CAD data representing the shape of each part to be configured, and set the dimensions of the shape indicated by the read 3D CAD data for each part constituting the product Dimension measurement item information stored in an evaluation item storage unit that stores dimensional measurement item information representing a dimension measurement item and constraint condition information that is associated with the measurement item and represents a condition that restricts the dimension of each part. For the measurement item indicated by, the measurement means is caused to measure at the measurement position designated for each measurement item by the measurement position designation means for designating the measurement position. Among the constraint condition information stored in the evaluation item storage section, the measurement item constraint condition corresponding to the measurement result information is the measurement result information representing the result of measurement performed by the measurement means in the constant control step and the measurement control step. Provided as a program for causing a computer to execute a measurement result evaluation process that evaluates whether the condition indicated by the information is met and an evaluation result display process that displays evaluation result information that represents the result evaluated in the measurement result evaluation process Therefore, even if the dimensions of each part to be evaluated cannot be measured automatically, the dimensions based on the designed three-dimensional CAD data can be measured sequentially based on the accumulated evaluation items, which is important. Evaluation items can be measured without omission. Since it is characterized in that the operator selects and designates a measurement position of CAD data and performs measurement, it is not necessary to prepare a template in which parameters are embedded in advance. Furthermore, it is possible to evaluate a new structure or design data whose shape has been greatly changed.

  The measurement control process is, for example, step S1 to step S3 shown in FIG. 9, the measurement result evaluation process is, for example, step S4 and step S5 shown in FIG. 9, and the evaluation result display process is, for example, shown in FIG. Step S8.

It is a functional block diagram of the design data evaluation apparatus 1 which is one Embodiment of this invention. An example of the evaluation item table 40 memorize | stored in the evaluation item memory | storage means 10 shown in FIG. 1 is shown. The shape of the boss | hub 30 used as the evaluation object of the design data evaluation apparatus 1 shown in FIG. 1 is shown. An example of the evaluation item table 41 which added the measurement result to the evaluation item table 40 shown in FIG. An example of the evaluation item table 42 in which the evaluation result is added to the evaluation item table 41 shown in FIG. An example of the evaluation item table 43 in which the model name is added to the evaluation item table 42 shown in FIG. An example of the evaluation result information 50 displayed on the display unit 132 shown in FIG. An example of the past evaluation result information 51 displayed on the display unit 132 shown in FIG. 1 is shown. It is a flowchart of the design data evaluation process which the design data evaluation apparatus 1 shown in FIG. 1 performs. It is a flowchart of the design data evaluation result browsing process which the design data evaluation apparatus 1 shown in FIG. 1 performs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Design data evaluation apparatus 2 Operator 10 Evaluation item memory | storage means 11 Execution file storage means 12 Measurement control means 13 Operation console 14 Measurement result acquisition means 15 Measurement result evaluation means 16 Evaluation result storage means 17 Evaluation result display means 18 Site designation means 19 Past Information display means 20 Shape data storage means 21 Measurement position designation means 30 Boss 31 Edge 40-43 Evaluation item table 131 Input section 132 Display section

Claims (6)

A design evaluation apparatus that evaluates the dimensions of a part constituting a designed product using a CAD system having a measuring means for measuring dimensions of a three-dimensional shape represented by three-dimensional CAD data,
Shape data storage means for storing three-dimensional CAD data representing the shape of each part constituting the product;
Evaluation item storage means for storing dimension measurement item information representing a dimension measurement item for each part constituting the product, and constraint condition information representing a condition that is associated with the measurement item and restricts the dimension of each part,
A measuring position specifying means for specifying a measuring position;
3D CAD data to be evaluated is read out from the shape data storage means, and the dimensions of the shape indicated by the read 3D CAD data are measured for the measurement item indicated by the dimension measurement item information stored in the evaluation item storage means. Measurement control means for causing the measurement means to measure at a measurement position designated for each measurement item by the means;
The measurement result information indicating the result of measurement performed by the measurement control means is the condition indicated by the restriction condition information of the measurement item corresponding to the measurement result information among the restriction condition information stored in the evaluation item storage means. A measurement result evaluation means for evaluating conformity;
A design evaluation apparatus comprising: evaluation result display means for displaying evaluation result information representing a result evaluated by the measurement result evaluation means.
An execution file storage means for storing execution file information including measurement means specifying information for specifying a measurement means for measuring each measurement item among the measurement means;
The evaluation item storage means stores execution file specifying information for specifying execution file information for each measurement item indicated by the dimension measurement item information,
The measurement control means includes each measurement item indicated by the dimension measurement item information stored in the evaluation item storage means, and execution file specifying information corresponding to each measurement item is included in the execution file information stored in the execution file storage means. The design evaluation apparatus according to claim 1, wherein measurement means specified by measurement means specifying information included in execution file information to be indicated is measured. A display unit for displaying the shape indicated by the three-dimensional CAD data to be evaluated read from the shape data storage unit;
The execution file information includes guidance information representing guidance for causing the shape displayed on the display unit to designate a measurement position corresponding to each measurement item,
The measurement control means displays guidance information included in the execution file information when the measurement means specified by the measurement means identification information included in the execution file information indicated by the execution file identification information corresponding to each measurement item is used for measurement. The design evaluation apparatus according to claim 2, wherein the design evaluation apparatus is displayed on a part.   The design evaluation apparatus according to claim 1, further comprising an evaluation result storage unit that stores the evaluation result information. A part designating means for designating a part to be displayed;
The evaluation result information stored in the evaluation result storage means further includes past information display means for reading and displaying the evaluation result information of the part specified by the part specifying means from the evaluation result storage means, The design evaluation apparatus according to claim 4. A program for evaluating dimensions of a part constituting a designed product using a CAD system having a measuring means for measuring dimensions of a three-dimensional shape represented by three-dimensional CAD data,
The three-dimensional CAD data to be evaluated is read from the shape data storage unit that stores the three-dimensional CAD data representing the shape of each part constituting the product, and the dimensions of the shape indicated by the read three-dimensional CAD data are configured. Dimension measurement stored in an evaluation item storage unit that stores dimension measurement item information that represents a measurement item of a dimension for each part and constraint condition information that is associated with the measurement item and represents a condition that restricts the dimension of each part. For the measurement item indicated by the item information, a measurement control step for causing the measurement means to measure at the measurement position designated for each measurement item by the measurement position designation means for designating the measurement position;
The measurement result information representing the result measured by the measurement means in the measurement control step is the condition indicated by the constraint condition information of the measurement item corresponding to the measurement result information among the constraint condition information stored in the evaluation item storage unit. A measurement result evaluation process for evaluating conformity;
A program for causing a computer to execute an evaluation result display step for displaying evaluation result information representing a result evaluated in a measurement result evaluation step.

Images