JPH0882575A - Method and apparatus for forming and displaying evaluation table - Google Patents

Abstract

PURPOSE: To reduce the load of a worker while shortening the time required in inspection by evaluating a production error by comparing inspection drawing data with a measured result to form inspection result table data. CONSTITUTION: Computer aided design(CAD) drawing data 2 is inputted to a model forming part 4 from a CAD system to be converted to inspection drawing data 5. The formed inspection drawing data 5 is displayed on an output device 8 such as a display through an input/output control part 7. The measured result obtained by a measuring machine such as a three-dimensional measuring machine or a factory microscope is stored in measured result data through a measured data receiving part 10. An inspection result table forming part 12 allows the measured result data 11 and the plan value, upper limit common difference value and lower limit common difference value of the drawing data 5 to compare them to perform the evaluation of an error and forms inspection result table data 13 collected in a table form. This inspection result table data 13 is displayed on the output device 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention measures the shape of a manufactured article by a measuring means such as a three-dimensional measuring machine, compares the measurement result with the design value of the article, and obtains inspection result data. The present invention relates to a method and apparatus for collectively creating an inspection result table, and creating and displaying an inspection result table as an evaluation table for displaying inspection results on a drawing.

[0002]

2. Description of the Related Art Today, CAD (Computer Aided Desig)
n) CAM (ComputerAided Manufactu) based on the data
ring) system enables automatic production of products, and manages the inspection result table generated from the measurement result data measured by various measuring machines in the inspection of mechanical parts, etc. that are these products, and the design, manufacturing department, etc. Feedback is being made to. In this management, conventionally, the inspection operator measures the shape of the article and directly writes the measurement result data on the design drawing, or the inspection operator creates a list form form and attaches it to the drawing. The method of making a gradebook was often used.

The measurement result data can be obtained by measuring a target component or the like with a coordinate measuring machine or the like. Based on the measurement result data obtained by this coordinate measuring machine, etc., the inspection operator usually writes the measurement result directly on the handwritten drawing or the CAD drawing by CAD, or the measurement result is attached as a list to the drawing. I had created a gradebook.

When a drawing correction occurs, it is necessary to prepare an inspection result sheet from the beginning. In addition, recently, in order to manage this inspection report, a form creation system has been developed that outputs the measurement results in a list format using the measurement result data obtained by a coordinate measuring machine such as a coordinate measuring machine. ing. In this type of system, it is possible to obtain the measurement result data by measuring the target article using a coordinate measuring machine or the like. Then, input the design value and the tolerance value of the measurement location from the keyboard, and output a form that expresses the design value, the tolerance value, the measurement result and the determination result of whether the measurement result is within the tolerance range in a list format. To do.

Further, there has been proposed a device for displaying the inspection result by adding the inspection result to the CAD drawing side by side with the design value data written in the CAD drawing (for example, Japanese Patent Laid-Open No. 4-160681).

[0006]

In recent years, due to the progress of technology for manufacturing mechanical parts and the demands of users and consumers of products, the number of products having complicated shapes and mechanical parts tends to increase. There is a concern that the inspection time required for this will increase. In addition, since the inspection report used to inspect this product is created manually by the inspection operator, there is a limit to improving productivity and there are many variations due to the operator. Occasionally, a transcription error by a person may occur. Further, in the inspection result table prepared in the form of a list, it is difficult to determine which of the measurement points is defective, so that the measurement result cannot be effectively utilized.

For these reasons, it is considered necessary to systematize the preparation of the inspection result table, but at present, the commercially available form preparation system receives the measurement result data obtained by the measurement, and in the order of the measurement numbers. Since the design value and the tolerance value are input by the keyboard, there are many operations and it is troublesome at present. Further, even in the device that automatically writes the inspection result result in the CAD drawing based on the measurement result data by the measuring instrument, only the inspection result of the specific part is displayed so as to be aligned with the design value clearly shown in the drawing. In addition, since the inspection result by one measurement is written in one drawing, accurate judgment of each part of the manufactured product such as machine parts is performed like a prototype inspection. In many cases, there was a shortage of data, and it was difficult to make an accurate comprehensive judgment including product variations.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to systematize the preparation of the inspection result table and the display of the inspection result, and to make a part of the inspection result easy to see by using a table format. An object of the present invention is to provide a method and apparatus for creating and displaying an evaluation table, which can reduce the burden on an operator involved in the inspection and reduce the time required for the inspection.

[0009]

In order to solve the above-mentioned conventional problems, the present invention utilizes an inspection result table preparation method and apparatus, and the invention of claim 1 provides shape information or dimensions of an object to be measured. Creating inspection drawing data as a reference for comparison when creating an inspection report from design drawing data consisting of information, reading the measurement result data of the measurement object, and the dimensions in the inspection drawing data A step of specifying information, a step of comparing the specified dimension information in the inspection drawing data with a result of the measurement to evaluate a manufacturing error of the measurement object to form inspection result table data, A step of displaying the evaluation table in the inspection drawing in association with the dimensional information of the inspection drawing data by collecting error values in the inspection result table data in a tabular form. Was created display method of evaluation table of the example was constructed.

Further, in the invention of claim 2, in the step of reading the measurement result data of the measurement object, the reading data is data including the measurement result data of a plurality of times. And Claim 3
Of the invention, in the step of specifying the dimensional information,
It is assumed that a plurality of locations having the same size are designated in association with each other, an evaluation table for arranging the error values between the plurality of pieces of dimension information and measurement result data is created, and the evaluation table is associated with the dimension information in the inspection drawing. It is configured as a step of displaying in the inspection drawing.

Further, the invention according to claim 4 is: inspection drawing data storage means for storing inspection drawing data comprising shape information or dimension information of the measurement object; display means for displaying the inspection drawing data; and the measurement object. Measurement result storage means for capturing and storing the measurement result data, input means for specifying the dimension information in the inspection drawing data, and comparing the specified dimension information with the result of the measurement to measure the object to be measured. Evaluation means for evaluating manufacturing error to form inspection result table data, and an evaluation table in which error values in the inspection result table data are summarized in a table format and shown in association with the dimension information of the inspection drawing data. The evaluation-table creating and displaying device is configured to include an evaluation-displaying unit that displays the table on the inspection drawing.

[0012]

With the above configuration, the method and apparatus for creating and displaying the evaluation table according to the present invention can create the design value on the inspection drawing showing the measurement object and the inspection result in association with each other, and , Can be displayed. Since this inspection result can be generated as an evaluation table in a table format that is visually easy to see, the inspection result can be easily grasped. Therefore, it is possible to effectively utilize the inspection result, and it is possible to realize extremely effective design and manufacturing support.

Further, the dimension information corresponding to the content and location of the measurement is specified with respect to the measurement target object on which the setting of the dimension information (for example, design value, tolerance value) necessary for creating the evaluation table is displayed on the display means. A step or means for comparing the specified dimensional information with the measurement result, or a means for comparing the specified dimensional information with the measurement result,
Eliminates input mistakes when specifying dimension information that was conventionally done by keyboard input, and also specifies the part where the numerical value is not specified on the inspection drawing and the dimensional information and measurement result of the part where the numerical value is not specified on the drawing Can be compared.

Further, this method and apparatus can use a computer or the like, and since the inspection result table preparation work which was conventionally performed manually can be performed using the computer or the like,
It is possible to significantly reduce the time required to create the inspection result sheet, reduce the time required for the inspection, and manage the inspection result sheet that does not vary depending on the operator. In the method of creating and displaying the evaluation table, if the method of reading the measurement result data of a plurality of times in the step of reading the data
It is possible to display the inspection results of a plurality of times on a single sheet of the drawing, and it is possible to make a determination including measurement errors and product variations.

Further, if a method is adopted in which a plurality of points having the same size are designated in association with each other and the error values in the result table data based on this evaluation result are compiled into a table form, an inspection result of the points having the same size is obtained. You can see at a glance.

[0016]

1 is a block diagram showing the configuration of an embodiment of the present invention. The evaluation table creating / displaying device 3 of the present invention includes a model creating unit 4, an inspection drawing editing unit 6, an input / output control unit 7, an output device 8, an input device 9, a measurement result receiving unit 10, and an inspection result table creating unit 12. Is equipped with.

The model creating unit 4 receives the CAD drawing data 2 including design values created by the CAD system 1 from the CAD system 1 for designing articles. The CAD drawing data 2 is usually created and stored in the standard CAD format (IGES). Then, in the model creating unit 4, the input C
The AD drawing data 2 is converted into the inspection drawing data 5. The inspection drawing data 5 formed by the model creating unit 4 includes, for example, as shown in FIG.
Shape information 21 indicating the shape, size information 2 indicating the size
2, dimensional tolerance information 23 indicating dimensional tolerances, geometrical tolerance information 24 indicating geometrical tolerances, three-dimensional information 25 for locating drawings displayed in two dimensions in three dimensions, and the like.
The three-dimensionalization information 25 assumes, for example, an XYZ three-dimensional coordinate system, sets a plan view on the XY plane, sets a side view on the YZ plane, and displays the coordinate system for each drawing. The drawing is positioned in three dimensions. Also,
In the inspection drawing editing unit 6, the inspection drawing data 5 that has been once converted is subjected to model correction, three-dimensional information and the like as preprocessing for measurement preparation, and the inspection drawing data 5 for inspection is newly provided.
Can be edited. Further, in the inspection drawing editing unit 6, label information (reference numeral “63” shown in FIG. 6) for associating a plurality of portions having the same size can be added to the inspection drawing, and the instruction operation for specifying the size information can be performed. Not only the position of the design value 22 of the specified inspection drawing data 5, but also a plurality of locations having the same size as the displayed design value by the instruction operation for specifying the above-mentioned dimensional information using the label are linked. It is possible to specify the display position data and size of the evaluation table, which will be described later, and the index of the inspection result table data 13 that displays the error value 46 in the drawing in association with the design value dimension. Edit as.

The input / output controller 7 is a display,
The output device 8 is connected to an output device 8 such as a printer or a plotter, and outputs desired information (for example, a drawing) of the inspection drawing data 5 to the output device 8.
To display. The input / output control unit 7 is also connected to an input device 9 such as a keyboard or a mouse operated by an inspection operator. Then, a control signal is output to the inspection drawing editing unit 6, the inspection result table creating unit 12, and the evaluation table creating unit 14 in accordance with an instruction input by the operator to the input device 9. Therefore, the inspection operator can specify the dimension information by giving necessary instructions while confirming the display screen of the output device 8, for example.

On the other hand, the measurement result obtained from a measuring machine such as a three-dimensional measuring machine or a factory microscope is input to the measurement result receiving section 10. The measurement result receiving unit 10 performs data conversion of the input measurement result and generates measurement result data 11. The measurement result data 11 is, for example, as shown in FIG.
The measurement number 31, the measurement point sequence 32, the position 33 of the measurement target, the posture 34 of the measurement target, the size 35 of the measurement target, the deviation 36 of the measurement target, and the like. When a cylinder is assumed as the measurement target, the position 33 is a point coordinate on the center axis of the cylinder and the posture 3
4 corresponds to the direction vector of the central axis, and size 35 corresponds to the radius of the cylinder.

Then, the inspection result table preparation unit 12 correlates the generated measurement result data 11 with the design value, the upper limit tolerance value, and the lower limit tolerance value of the inspection drawing data 5 and evaluates the error, and the inspection result table data. Create 13. The inspection result table data 13 is, for example, as shown in (a) of FIG. 4, an index 41, a matrix 42, a design value 43, an upper limit tolerance value 44 for establishing correspondence with the design value 22 of the inspection drawing data 5.
Lower limit tolerance value 45, error value 46 comparing design value and measurement result, determination result 47 whether it is within the tolerance range, etc., and an inscription recording the contents of the inspection as shown in FIG. 4 (b). It is composed of columns 48. This inscription column 48 is, for example, an order number, a drawing number, a name, a process, a mold manufacturer, a model number, a mold designer, an inspection date, an inspection place, an issue date, an issuer, a remark regarding the manufacture and inspection of the article. Composed. Each item in the inscription column 48 is used as a main search key when searching the inspection result table data 13. Also, the inscription column 48
Is output device 8 by superimposing it on an arbitrary position on the inspection report.
Can be output from. This inspection report data 13
Is displayed on the output device 8 such as a display,
It is output to the output device 8 such as a plotter. It can also be saved by storing it in a storage device such as a magnetic disk or a magnetic tape.

Next, the operation of the evaluation table creation / display device 3 will be described. First, in the model creating unit 4, the CAD drawing data 2 is input and converted from the CAD system 1, and the inspection drawing data 5 is created. The created inspection drawing data 5 is displayed on the output device 8 such as a display via the input / output control unit 7. On the other hand, the measurement result obtained by a measuring machine such as a three-dimensional measuring machine or a factory microscope is stored in the measurement result data 11 via the measurement result receiving unit 10. Further, the obtained measurement result data 11 is compared with the design value, the upper limit tolerance value, and the lower limit tolerance value of the inspection drawing data 5 in the inspection result table creating section 12, evaluated, correlated and associated with each other in a table format. Inspection report data 1 compiled by
Is generated as 3. A procedure for creating the inspection result table and the evaluation table will be described.

As shown in FIG. 5, the process of creating the evaluation table and the inspection result table is as follows. First, as an inspection result table, the inspection result of the measurement result and the design value dimension is fed back to the drawing so that the inspection drawing data is inspected. Inspection drawing data 5 to indicate design value dimensions on the drawing using a mouse and compare with measured results
The design value dimension of (1) is associated semantically (s1). The operator confirms this instruction method interactively. The data of the selected design value is stored in the index, and the data such as the index number is stored in the index of the inspection report data. Next, in order to determine an error, as the dimensional tolerance, the upper limit tolerance value and the lower limit tolerance value are designated on the drawing by using the mouse similarly to the design value (s2). Here, when displayed in the form of tolerance ± 0.02, in the instruction of the tolerance value,
Upper limit tolerance +0.02 and lower limit tolerance -0.02 can be automatically assigned. Next, in the measurement result data (data excluding the measurement point sequence 32 in FIG. 3) displayed in the measurement result display area that is overlaid on the inspection drawing displayed on the display, measurement for error evaluation is performed. The result data is designated on the measurement result display area using the mouse (s3). Here, with respect to the measurement result data of a plurality of locations having the same size or a plurality of inspections, the corresponding data in the measurement result data displayed in the measurement result display area is also designated by using the mouse. Next, the design value and the measurement result data are compared to obtain an error value (s4). Next, the obtained error value is subjected to processing such as sign inversion and digit rounding (s5). Here, in processing the error value, rounding of digits by rounding,
Rounding of digits that combines rounding and rounding, JIS
It is possible to select the rounding of digits specified by Z 8401 (how to round numbers). In addition, the execution of this processing is
Can be freely selected by the operator. Next, a tolerance judgment is performed on the obtained error value (s6). Next, the error value is set at an arbitrary position in the table (evaluation table) that is temporarily prepared, for example, the position corresponding to the label when the dimensions are the same, or the position corresponding to the measurement target when there are multiple measurement targets. Write (s
7). Here, for the size of the evaluation table, the initial setting value is set to 2 lines 2
The standard is to display two measurement results, that is, the results of two measurements, and the standard is to display two identical dimension positions as dimension information. However, it can be appropriately changed by the operator according to the number of times of measurement and the number of pieces of dimensional information of the same specified size. Next, the vicinity of the design value is designated and the evaluation table is transcribed in the form of a table on the drawing (s8). At this time, if the error value is outside the tolerance range, color change display or underlined display is performed. Next, a leader line is added between the design value and the evaluation table to visually associate them (s9). Here, a free curve is used as a leader line connecting the design value and the error value on the drawing in order to distinguish each element from the drawing. However, the leader line may be a straight line. In addition, in the execution of the leader line processing, the operator can freely select the type and position of the line. Next, the design value, the upper limit tolerance value, the lower limit tolerance value, the error value, and the determination result are stored in the inspection result table data (s10). The display position of the evaluation table on the drawing and the leader line data between the design value and the evaluation table are stored as inspection drawing data. By repeating this series of processing (s1 to s10), an evaluation table in which the measurement result data is fed back to a visually meaningful position on the drawing in a table format is generated.

By the above processing, it is possible to generate an evaluation table in which the measurement results as shown in FIG. 6 are combined and displayed on the CAD drawing in the form of a table in a composite form. In this embodiment, the inspection result table creating unit 12 causes the measurement result data 11
Since the design value, the upper limit tolerance value, and the lower limit tolerance value for the measurement object displayed on the output device 8 such as a display are directly and interactively associated with the content and location of the measurement, the inspection operator It is possible to eliminate input errors when setting design values and tolerance values, which was done by keyboard input.
Furthermore, the inspection results are made into an evaluation table in the form of a table, and this evaluation table is described on the drawing in association with the design value.
As shown by reference numeral 61 in FIG. 6, the measurement results of a plurality of measurement objects can be attached with numbers to the design values of one drawing, and a label as shown by reference numeral 63 in FIG. As a result of measuring the shape position where the dimension information such as design value is not described by attaching, the dimension information is identified by the label and compared to show the label on the drawing as indicated by reference numeral 62 in FIG. It can be filled in as a written evaluation table.

Further, since the results measured by a caliper, a micrometer, etc. can be input to the inspection result table preparation section via an input device such as a keyboard, the inspection results by a plurality of measuring machines should be centrally managed. Is possible. In addition, in the inspection result table creating unit 12, when the inspection result table is created, the creation procedure history is held to generate the inspection result table creating procedure data, and after the teaching of the inspection result table creating procedure is completed, the inspection result table is created. By storing the inspection result table creation procedure data generated by the procedure teaching means in the storage medium,
When the measurement result data is sent back from the measuring machine to this device, the data is created according to the procedure for creating the test result table.Therefore, when creating the test result table using the measurement result data, and when creating the evaluation table data. Therefore, the operation of the inspection operator can be simplified.

In this embodiment, the measurement result data of the coordinate measuring machine or the like is received and the evaluation table is created. However, the procedure for measuring the shape of the measurement object on the inspection drawing data is taught. In response, the measurement command data creation unit that creates the measurement command data including the program that shows the measurement procedure based on the teaching contents, and the measurement device for measuring the shape of the coordinate measuring machine, factory microscope, etc. The measurement result data may be directly fetched by incorporating a measurement instrument interface that outputs command data and inputs measurement results obtained by the measurement instrument. In this case, the measuring machine receives the measurement command data and actually measures the measurement target (article). The measuring machine may be an automatic measuring machine configured to automatically move the measurement path based on a program, or a manual measuring machine manually moved by an operator. Also in the case of the manual measuring machine, the instruction of the measurement route and the input of the measurement result are performed through the measuring machine interface. Also, with such a configuration, if the instruction to create the inspection result table is taught at the same time when the measurement instruction is created and the inspection result table creation procedure data is created, the design value and the tolerance can be set even for a plurality of measurement objects. Since it is possible to easily create the inspection result table and the evaluation table without resetting the values, it is possible to realize extremely effective inspection support. In other words, once the inspection report creation procedure data is created, it is possible to easily create the inspection report and evaluation table without resetting the design values and tolerance values from the second time onward, which is extremely effective inspection support. Can be realized.

In addition to the format in which the error values are transferred from the inspection result table data 13 to the inspection drawing data 5 as an evaluation table as described above, the inspection result table data 1 is used.
It is also possible to output 3 as a form. In this case, the form frame data is the form form of the inspection operator, and is prepared inside the device or on spreadsheet software running on a personal computer. In the latter case, the inspection result table data is passed, and the inspection result is entered in the created form frame to form the form.

[0027]

As described above, according to the present invention, in the creation of the inspection result table, the design value on the inspection drawing showing the measurement object as the inspection result is associated with the inspection result data,
In addition, since the method and apparatus are to generate the evaluation table in which the error values are summarized in a visually easy-to-see manner from the evaluation result of the inspection result table, the inspection result can be easily grasped.
Therefore, there is an effect that the inspection result can be effectively used. Further, in creating the evaluation table, the design value and the tolerance value on the CAD drawing displayed on the display of the computer are directly designated and specified, so that the operator's input error is reduced. Therefore, it is possible to significantly reduce the time required to create the inspection result table and the evaluation table, and the inspection time is shortened.

Further, the method and the device are capable of displaying the inspection result by not only the portion in which the design value and dimension information are clearly specified but also the operator can specify an appropriate position to display the inspection result. Since the work of creating the inspection result table, which was performed in 1., can be performed using a computer or the like, it is possible to create and manage the inspection result table and the evaluation table without variation by the operator. Therefore, there is an effect that the burden on the operator involved in the inspection is significantly reduced.

Further, according to the second aspect of the present invention, since the inspection result including the results of a plurality of measurements is displayed, it is possible to easily make a determination including the product variation and the measurement error. Further, the invention according to claim 3 is a method of creating an evaluation table in which a plurality of locations having the same size are designated in association with each other and the inspection results of the same size are displayed in the form of a table on the drawing. It can be displayed to facilitate the determination of the inspection result.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing the configuration of an inspection result table preparation display device according to an embodiment of the present invention.

FIG. 2 is a display example of inspection drawings in inspection drawing data in the same apparatus.

FIG. 3 is a schematic diagram showing a data structure of measurement result data in the same device.

FIG. 4 is a schematic diagram showing a data structure of inspection report data in the same apparatus.

FIG. 5 is a flowchart showing a main part of creating an evaluation table in the apparatus.

FIG. 6 is an example of creating an evaluation table in the same apparatus.

[Explanation of symbols]

 1 CAD system 3 inspection result table preparation device 4 model preparation section 5 inspection drawing data 6 inspection drawing editing section 7 input / output control section 10 measurement result receiving section 11 measurement result data 12 inspection result table preparation section 13 inspection result table data 14 evaluation table Creation unit 21 Shape information 22 Design value Dimension information 23 Tolerance value information 24 Geometric tolerance information 25 Three-dimensional information

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hideaki Okamoto 3-2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Nikon Corporation

Claims (4)

[Claims] 1. A step of creating inspection drawing data as a reference for comparison when creating an inspection report from design drawing data including shape information or dimension information of a measurement object, and measurement result data of the measurement object. And a step of specifying the dimension information in the inspection drawing data, and comparing the specified dimension information in the inspection drawing data with the result of the measurement to evaluate the manufacturing error of the measurement object. And forming the inspection report data, the error values of the inspection report data are summarized in a table form into an evaluation table, and the evaluation table is associated with the dimension information of the inspection drawing data. A method of creating and displaying an evaluation table, the method including the step of displaying the evaluation table inside. 2. The evaluation table according to claim 1, wherein in the step of reading the measurement result data, the measurement result data of the measurement object includes the measurement result data of a plurality of measurements. How to create and display. 3. In the step of identifying the dimension information, a plurality of locations having the same dimension are associated and designated,
To create an evaluation table in which error values of the plurality of dimensional information and the measurement result data are arranged, and to display the evaluation table in the inspection drawing in association with the dimensional information displayed in the inspection drawing. The method for creating and displaying the evaluation table according to claim 1 or 2. 4. An inspection drawing data storage unit for storing inspection drawing data consisting of shape information or dimension information of a measurement object, a display unit for displaying the inspection drawing data, and a measurement result data of the measurement object. A measurement result storage unit for storing, an input unit for specifying the dimension information in the inspection drawing data, and comparing the specified dimension information and the result of the measurement to evaluate the manufacturing error of the measurement object. An evaluation means for forming inspection report data, and an error value in the inspection report data is summarized in a table format to form an evaluation table, and the evaluation table is displayed on the inspection drawing in association with the dimension information of the inspection drawing data. An evaluation table creating and displaying device comprising: an evaluation table displaying means.