JP2010039581A - Quality inspection device, quality inspection system, qualification inspection method, computer program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a quality inspection device capable of securing quality of an object to be inspected, and efficiently performing acceptance inspection of the object to be inspected. <P>SOLUTION: The quality inspection device for inspecting the quality of the object to be inspected, which is delivered from a supplier to a buyer, includes: a measurement item table for associating a plurality of measurement items for inspecting the quality of the object to be inspected and the validity/invalidity of measurement saving by the buyer; a first acquisition means for acquiring the measurement result by the supplier of each of the plurality of measurement items; a second acquisition means for acquiring the measurement result by the buyer of the measurement item whose measurement is required by the buyer by referring to the measurement item table; and a quality inspection means for inspecting the quality of the object to be inspected based on the measurement results acquired by the first and second acquisition means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a quality inspection apparatus, a quality inspection system, a quality inspection method, a computer program, and a recording medium for performing a quality inspection of an inspection object delivered from a supplier to a supplier.

  Manufacturers conduct incoming inspections of outsourced parts to control product quality. Depending on the product, there may be over 100 companies outsourcing parts. In the incoming inspection, since the actual product confirmation whether the delivered parts are in conformity with the design standard is performed manually, the efficiency of the incoming inspection is strongly desired.

  Patent Document 1 receives part inspection data from a subcontractor by e-mail, calculates a process capability index from the inspection data, determines acceptance / rejection of the incoming inspection based on the calculated process capability index, and sends the result by e-mail. A delivery parts quality assurance system that aims to notify subcontractors is disclosed.

  Patent Document 2 discloses an inspection system aimed at inspecting an inspection object while displaying the contents of inspection drawings and inspection standards on a display device.

  Patent Document 3 discloses a system that aims to recognize the number of defective parts to be delivered and to evaluate the quality of the parts by communicating with a subcontractor computer.

Patent Document 4 discloses a management method aimed at managing product production between a product designer and a producer.
JP 2002-149757 A JP 2003-295934 A JP 2005-259063 A JP 2008-9952 A

However, in the delivered part quality assurance system according to Patent Document 1, since the validity of the measurement result of the subcontractor is not taken into consideration at all, the quality of the part cannot be ensured.
Moreover, since the structure which verifies the validity of the measurement result in a subcontractor is not disclosed by patent documents 2-4, the above-mentioned problem cannot be solved.

  The present invention has been made in view of such circumstances, a quality inspection system, a quality inspection apparatus, and a quality inspection method capable of ensuring the quality of an inspection object and efficiently performing an incoming inspection of the inspection object. The main object is to provide a computer program and a recording medium.

  The quality inspection apparatus according to the present invention is a quality inspection apparatus for inspecting the quality of an inspection object delivered from a supplier to a delivery destination. Referring to the measurement item table, a measurement item table that associates whether measurement can be omitted for each measurement item, a first acquisition unit that acquires measurement results at each of the plurality of measurement items, and a delivery destination. Second acquisition means for acquiring a measurement result at a delivery destination of a measurement item requiring measurement, and quality inspection means for inspecting the quality of the inspection object based on the measurement results acquired by the first and second acquisition means. It is characterized by providing.

  In the quality inspection apparatus according to the present invention, the quality inspection unit compares the measurement results acquired by the first and second acquisition units so that the measurement method of the delivery source matches the measurement method of the delivery destination. A measurement method suitability determination means for determining whether or not the measurement method is determined for each measurement item.

  In the quality inspection apparatus according to the present invention, the measurement method suitability determination means is a first calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at the delivery source. And a second calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement at the delivery destination based on a measurement result at the delivery destination, and each of the first and second calculation means calculated by the first and second calculation means. And a means for comparing the process capability index for each measurement item.

  The quality inspection apparatus according to the present invention relates to each measurement capability calculated by the first and second calculation means, a means for associating a measurement device to be used for measurement for each measurement item and registering it in the measurement item table. The measurement method suitability judging means comprises a table in which conformity judgment values for judging whether or not the measuring method is conforming to the delivery source and the delivery destination based on the difference in index are associated with each measuring device. Based on the table, the means for specifying the conformity determination value corresponding to each measurement item is compared with the difference between the process capability indexes calculated by the first and second calculation means, and the corresponding conformity determination value. And a means for determining whether or not the measuring method is adapted at the delivery source and the delivery destination.

  In the quality inspection apparatus according to the present invention, the quality inspection unit is a unit that calculates a process capability index indicating a process capability related to each of the plurality of measurement items based on the measurement result acquired by the first acquisition unit. It is characterized by providing.

  In the quality inspection apparatus according to the present invention, a tolerance is associated with each measurement item, and the quality inspection means is based on the measurement result of the measurement item acquired by the second acquisition means and the tolerance of the measurement item. Means for determining whether the quality is acceptable or not is provided.

  The quality inspection apparatus according to the present invention includes a quality change information acquisition unit that acquires, for each measurement item, quality change information that indicates a possibility that the quality of the inspection object has changed, and a quality change acquired by the quality change information acquisition unit. And a means for specifying a measurement item that requires measurement at a delivery destination based on the information and the measurement item table.

  The quality inspection apparatus according to the present invention includes a receiving unit that accepts for each measurement item whether or not measurement can be omitted at a delivery destination, and the measurement item table that associates whether or not measurement is accepted by the receiving unit with the measurement item. And means for registering.

  A quality inspection system according to the present invention includes any of the quality inspection devices described above and a communication device of a delivery source, and the communication device accepts measurement results at the delivery source of each of the plurality of measurement items. And a measurement result transmitting means for transmitting the received measurement result, wherein the first acquisition means includes a means for receiving the measurement result transmitted from the communication device.

  In the quality inspection system according to the present invention, the quality inspection device includes means for transmitting the plurality of measurement items and tolerances of the respective measurement items, and the communication device includes the measurement items transmitted from the quality inspection device and Means for receiving tolerance, and means for inspecting the quality of the inspection object based on the received measurement result and tolerance, and the measurement result transmitting means, if the quality inspection does not pass, the measurement result and the inspection Information requesting delivery of an object can be transmitted to the quality inspection apparatus.

  The quality inspection method according to the present invention is a quality inspection method for inspecting the quality of an inspection object to be delivered from a supplier to a delivery destination. A step of preparing a measurement item table that associates whether measurement can be omitted for each measurement item, a step of obtaining measurement results at a delivery source of each of the plurality of measurement items, and a delivery destination with reference to the measurement item table The method includes a step of acquiring a measurement result at a delivery destination of a measurement item that requires measurement, and a quality inspection step of inspecting the quality based on each acquired measurement result.

  In the quality inspection method according to the present invention, in the quality inspection step, whether the measurement method of the supplier conforms to the measurement method of the supplier by comparing the measurement result at the supplier and the measurement result at the supplier. It is characterized by having a measuring method suitability determining step for determining for each measurement item.

  In the quality inspection method according to the present invention, the measurement method suitability determination step calculates a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at the delivery source, It has a step of calculating a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at the delivery destination and a step of comparing each calculated process capability index. And

  The quality inspection method according to the present invention includes a step of associating a measurement device to be used for measurement for each measurement item and registering it in the measurement item table, and each process capability calculated by the first and second calculation means Preparing a table associating conformity determination values for each measuring device for determining whether or not the measurement method conforms to the delivery source and the delivery destination based on the difference between the indexes, The method suitability determination step includes a step of specifying a conformity determination value corresponding to each measurement item based on the table, a difference between each calculated process capability index, and a corresponding conformity determination value, thereby measuring the measurement method. Means for determining whether or not the product is compatible with the delivery source and the delivery destination.

  The quality inspection method according to the present invention is characterized in that the quality inspection step includes a step of calculating a process capability index indicating a process capability related to each of the plurality of measurement items based on a measurement result at a supplier. To do.

  The quality inspection method according to the present invention is characterized in that the quality inspection step includes a step of inspecting quality based on a measurement result of a measurement item at a delivery destination and a tolerance of the measurement item.

  According to the quality inspection method of the present invention, a quality change information indicating the possibility that the quality of an inspection object has changed is obtained for each measurement item, and based on the obtained quality change information and the measurement item table, a delivery destination And a step of identifying a measurement item that requires measurement.

  The quality inspection method according to the present invention includes a step of accepting, for each measurement item, whether or not measurement can be omitted at a delivery destination, and a step of registering the accepted or not of measurement omission in association with the measurement item in the measurement item table. It is characterized by that.

  A computer program according to the present invention is a computer program that, when executed by a computer, causes the computer to inspect the quality of an object to be inspected delivered from a delivery source to a delivery destination. A plurality of measurement items for performing quality inspection, and a measurement item table that associates for each measurement item whether measurement can be omitted at the delivery destination, a means for identifying a measurement item that requires measurement at the delivery location, and It is made to function as a quality means for inspecting the quality based on the measurement result acquired at the delivery source of each of the plurality of measurement items and the measurement result obtained at the delivery destination of the measurement item requiring measurement at the delivery destination. .

  The computer program according to the present invention further compares the measurement result at the delivery source and the measurement result at the delivery destination to determine whether or not the delivery source measurement method is compatible with the delivery destination measurement method. It functions as a measurement method suitability determination means for determining each measurement item.

  The computer program according to the present invention provides the computer with a first calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at the delivery destination. Second calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement based on a measurement result at a delivery destination, and each process capability index calculated by the first and second calculation means It is made to function as a means to compare these.

  The computer program according to the present invention measures the computer based on a difference between each process capability index calculated by means for associating a measuring device to be used for measurement for each measurement item and the first and second calculation means. Means for identifying a conformity determination value corresponding to each measurement item based on a table in which conformity determination values for determining whether or not the method conforms to a delivery source and a delivery destination for each measuring device; and By comparing the difference between each process capability index calculated by the first and second calculation means and the corresponding conformity judgment value, it is judged whether or not the measuring method conforms to the delivery source and the delivery destination. It is made to function as a means.

  The computer program according to the present invention further causes the computer to function as a means for calculating a process capability index indicating a process capability related to each of the plurality of measurement items based on a measurement result at a supplier. And

  The computer program according to the present invention further causes the computer to function as means for determining whether the quality is acceptable based on a measurement result of a measurement item at a delivery destination and a tolerance of the measurement item.

  The computer program according to the present invention further includes means for specifying a measurement item that requires measurement at a delivery destination based on quality change information indicating the possibility that the quality of the inspection object has changed and the measurement item table. It is made to function as.

  The computer program according to the present invention registers the computer in the measurement item table by associating the measurement availability with the measurement item when the computer accepts the measurement omission in the delivery destination for each measurement item. It is made to function as a means to do.

  A computer-readable recording medium according to the present invention records any one of the computer programs described above.

In the present invention, in order to inspect the quality of the inspected object, the measurement results of each of the plurality of measurement items are acquired from the delivery source. In addition, in order to confirm the validity of the measurement result of the supplier, the measurement result is also acquired from the supplier. However, for the measurement results at the delivery destination, the measurement results for all measurement items are not acquired, but the measurement items that need to be measured at the delivery destination are specified based on the measurement item table, and the measurement items specified are measured. Get the result. This does not apply to the measurement results at the supplier. Then, the quality is inspected based on the measurement result of the delivery source and the measurement result of the delivery destination.
Therefore, it is possible to ensure the quality of the inspection object and reduce the inspection work at the delivery destination.
In addition, since the measurement result of the measurement item at the delivery source is also acquired for the measurement item for which the measurement result is not obtained at the delivery destination, the delivery source cannot recognize the measurement item omitted at the delivery destination. Therefore, it is possible to save the trouble of measurement at the delivery destination, and it is possible to thoroughly perform quality control for each measurement item regardless of whether or not the measurement can be omitted.

In the present invention, based on the measurement result obtained from the supplier and the measurement result obtained from the delivery destination, it is determined whether the measurement method of the delivery source and the measurement method of the delivery destination are compatible. Judge for each item. That is, it is determined whether the measuring method is substantially the same at the delivery source and the delivery destination.
Therefore, the quality of the inspection object can be inspected from the viewpoint of the measuring method. By managing the measurement methods so that they are substantially the same, it is possible to ensure the reliability of the measurement results and ensure the quality.

In the present invention, the process capability index of the delivery source and the process capability index of the delivery destination are calculated based on the measurement results respectively acquired from the delivery source and the delivery destination. The smaller the difference in each process capability index, the closer the measurement method of the supplier and supplier.
Therefore, by comparing the process capability indexes, it is possible to determine whether or not the measuring methods of the delivery source and the delivery destination are compatible.

  In the present invention, the measurement device is associated with each measurement item in the measurement item table, and the conformity determination value corresponding to each measurement item is specified using the table in which the measurement device and the conformity determination value are associated. To do. Then, by comparing the difference between the process capability indexes of the delivery source and the delivery destination and the conformity judgment value, it is judged whether or not the measurement methods of the delivery source and the delivery destination are suitable.

  In the present invention, the process capability index for each of the plurality of measurement items is calculated based on the measurement result obtained from the supplier. The process capability index is a numerical value for determining pass / fail of the quality of the inspection object.

In the present invention, the pass / fail of the quality of the inspected object is determined by comparing the measurement result of the measurement item requiring measurement with the measurement result acquired from the delivery destination and the tolerance of the measurement item.
Accordingly, the quality of the inspection object can be ensured for the measurement items that require measurement, and the measurement at the delivery destination can be omitted for the measurement items that do not require measurement.

In the present invention, quality change information indicating the possibility that the quality of the inspection object has changed is acquired, and measurement items that require measurement are specified based on the quality change information and the measurement item table. Therefore, even if the measurement item can be omitted, if there is a possibility that the quality has changed, the measurement result at the delivery destination can be acquired and the quality can be inspected.
Therefore, it is possible to ensure the quality of the inspected object for the measurement items that can be omitted but the quality of the inspected object may have changed, and the measurement items that cannot be omitted. For measurement items that can be omitted and the quality of the inspected object is not likely to change, measurement at the delivery destination can be omitted.

  In the present invention, whether or not measurement of the inspected object at the delivery destination can be omitted is received for each measurement item, and the received determination of whether or not measurement is omitted is associated with each measurement item and registered in the measurement item table. Therefore, it is possible to appropriately set whether measurement can be omitted.

  In the present invention, it is possible to inspect the quality of the inspected object by sending the measurement result at the delivery source from the communication device at the delivery source to the quality inspection device at the delivery destination that performs the above-described quality inspection. It is.

In the present invention, measurement items and tolerances are transmitted from the quality inspection device to the communication device of the supplier, and the communication device inspects the quality of the inspected object by comparing the measurement results and tolerances at the supplier. When the communication device does not pass the quality inspection, the communication device can transmit the measurement result and information requesting delivery of the inspection object to the quality inspection device.
Therefore, the delivery destination can determine whether delivery is possible, that is, whether or not a manufacturing correction request is required, from the measurement result even for an inspected product that has not passed the quality inspection at the delivery source, and can respond more flexibly to the inspected product. become.

  ADVANTAGE OF THE INVENTION According to this invention, the quality of a to-be-inspected object can be ensured and the receiving inspection of to-be-inspected object can be performed efficiently.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
FIG. 1 is a schematic diagram showing a configuration of a quality inspection system according to an embodiment of the present invention. The quality inspection system according to the present embodiment includes a buyer-side quality inspection device 1 that purchases a component and a plurality of supplier-side communication devices 2 that supply the component. The quality inspection device 1 and the communication device 2 communicate with each other. They are connected via the network N. Further, terminal devices 3 and 4 are connected to the quality inspection device 1 and the communication device 2, respectively.

  FIG. 2 is a block diagram schematically showing the configuration of the quality inspection device 1 and the communication device 2. The quality inspection apparatus 1 is a computer including a control unit 10 that controls the entire apparatus, for example, a CPU (Central Processing Unit). The control unit 10 includes a RAM 12 that stores temporary information generated in accordance with the calculation, and an external device that reads the computer program 19a from a recording medium 19 that records the computer program 19a according to the embodiment of the present invention, such as a CD-ROM. The storage device 13 and an internal storage device 14 such as a hard disk for recording the computer program 19a read by the external storage device 13 are connected. The control unit 10 executes the quality inspection method according to the present invention by reading the computer program 19a from the internal storage device 14 into the RAM 12 and executing various arithmetic processes. Further, the quality inspection apparatus 1 includes an input device 15 such as a keyboard and a mouse, an output device 16 such as a liquid crystal display or a CRT display, and a communication unit 18, and a plurality of communication units 18 are connected via a communication network N. The communication device 2 is connected. In addition, the communication device 18 is connected to the terminal device 3 and configured to input / output information related to the quality control of parts by a predetermined protocol, for example, HTTP, via the input device and the output device of the terminal device 3. (Not shown in FIG. 2 for convenience of drawing). The quality inspection apparatus 1 also includes a database 17 that stores various information necessary for quality control of parts. The database 17 includes a component DB 17a, a measurement location DB 17b, a shape feature DB 17c, a buyer measurement value DB 17d, a supplier measurement value DB 17e, an analysis result DB 17f, an evaluation DB 17g, an NG component DB 17h, and an NG component management status DB 17i, which will be described later. .

  The communication device 2 is a computer including a control unit 20 that controls the entire device, and the basic configuration is the same as that of the quality inspection device 1. In other words, the ROM 20, the RAM 22, the external storage device 23, the internal storage device 24, the input device 25, the output device 26, and the communication unit 28 are connected to the control unit 20. The communication device 28 is connected to the terminal device 4 and is configured to input / output information related to the quality control of parts using a predetermined protocol via the input device and the output device of the terminal device 4 (drawing of drawing). (For convenience, not shown in FIG. 2). In addition, the communication device 2 includes a supplier measurement value DB 27 in which the measurement results of parts performed on the supplier side are registered.

  3 to 5 are flowcharts showing processing procedures of the control units 10 and 20 related to quality management. The control unit 10 receives the component information with the input device 15 and registers the received component information in the component DB 17a (step S11).

  FIG. 6 is an explanatory diagram conceptually showing the record layout of the component information DB. The table (file) of the component information DB is composed of a plurality of columns (fields), for example, a “component ID” column, a “drawing number” column, and a “customer” column. Corresponding information is stored. Each component ID is associated with component status information indicating whether it is a prototype or a mass-produced product.

  When the process of step S11 is completed, the control unit 10 receives the measurement location information necessary for inspecting the quality of the parts by the input device 15, and registers the received measurement location information in the measurement location DB 17b (step S12). ).

  FIG. 7 is an explanatory diagram conceptually showing the record layout of the measurement location DB 17b. The table of the measurement location DB 17b includes a plurality of columns, for example, a “drawing number” column, a “manufacturing method” column, an “abbreviation” column for storing information indicating whether measurement can be omitted, and a sample number of parts to be measured “n”. "Number" column, "Dimension ID" column for storing dimension ID corresponding to measurement location (measurement item), "Standard value" column for storing standard value, "Standard upper limit" column for storing standard upper limit (tolerance), Standard “Measurement method” column that stores the lower limit (tolerance), “Lower specification limit” column, “Shape feature” column that stores the shape feature information that indicates the shape of the measurement location, and information that indicates the measurement device that should be used for the measurement・ It consists of “Measuring equipment” column.

FIG. 8 is an explanatory diagram conceptually showing the record layout of the shape feature DB 17c. The table of the shape feature DB 17c includes a plurality of columns, for example, a “shape feature” column, a “measurement method / measurement device” column, a “range upper limit” column for storing the upper limit value of the measurement range, and a “range” for storing the lower limit of the measurement range. The column is composed of a “lower limit” column, a “Cp warning value” column, a “Cpk warning value” column, a “ΔCp warning value” column, and a “ΔCpk warning value” column. The Cp warning value and the Cpk warning value are numerical values for managing the quality of parts by the process capability index. The ΔCp warning value and the ΔCpk warning value are numerical values for determining whether the measurement method on the supplier side and the measurement method on the buyer side are compatible.
The Cp warning value, the Cpk warning value, the ΔCp warning value, and the ΔCpk warning value of the shape characteristic DB 17c are linked by the shape feature, the measuring device, the upper limit of the standard, and the lower limit of the standard registered in the measurement location DB 17b.

  When the process of step S12 is completed, the control unit 10 transmits the measurement location information excluding the availability of the omitted location to the communication device 2 via the communication unit 18 (step S13).

  The control unit 20 of the communication device 2 receives the measurement location information transmitted from the quality inspection device 1 at the communication unit 28 (step S14).

FIG. 9 is a schematic diagram illustrating an example of a component selection screen and a supplier data input screen. When the process of step S14 is completed, the control unit 20 displays a part selection screen shown in FIG. 9A, and accepts selection of a part to be manufactured by the input device 25 (step S15). Next, the control unit 20 displays the supplier data input screen shown in FIG. 9B, and the manufacturing lot number, the CAVI number, the mold number, and the measured value measured at the supplier side of the selected part. The quality change information is received by the input device 25, and the received information is registered in the supplier measurement value DB 27 (step S16). Hereinafter, the measurement values measured on the supplier side are referred to as supplier measurement values. Whether or not measurement can be omitted is configured so that it cannot be seen from the supplier side. When the supplier measurement value is input, the control unit 20 compares the supplier measurement value with the corresponding tolerance to determine whether the quality is acceptable, and immediately displays the determination result on the supplier data input screen. .
Quality change information is information indicating that the quality of parts may change due to changes in molds, mold maintenance, material lot changes, molding machine setup changes, etc. 25 is input to the communication device 2.

  FIG. 10 is an explanatory diagram conceptually showing the record layout of the supplier measurement value DB 27. The parts delivered from the supplier to the buyer are identified and managed by “product lot number”, “CAVI number”, and “mold number”. The supplier measurement value DB 27 is a measurement measured on the supplier side for each of a plurality of measurement locations (dimension ID 001 to 005) for each manufacturing unit determined by “product lot number”, “CAVI number”, and “mold number”. “N” values, for example, three values are stored.

  When the process of step S16 is completed, the control unit 20 determines the quality pass / fail based on the tolerance of each measurement location received in step S14 and the supplier measurement value received in step S16 (step S17). That is, it is determined for each measurement location whether or not the difference between the supplier measurement value and the standard value is within the tolerance range.

  In the case where no special employment, which will be described later, is required, information regarding a part that is determined to be unacceptable in step S17, that is, a part whose supplier measurement value is out of the tolerance range, is registered in an NG parts DB (not shown).

When the process of step S17 is completed, the control unit 20 determines whether or not the inspection result of the part has passed, that is, whether or not all the measurement points are within the tolerance range (step S18). When it determines with it being disqualified (step S18: NO), the control part 20 receives and determines whether the special adoption is requested | required in the input device 15 (step S19). The requirement for special adoption means that the part is out of tolerance, but it is required to accept or accept the part. When it is determined that special employment is required (step S19: YES), or when it is determined that it is acceptable in step S18 (step S18: YES), the control unit 20 performs the manufacturing lot number, the CAVI number, the mold number, and the supplier. The measured value and the quality change information are transmitted to the quality inspection apparatus 1 through the communication unit 28 (step S21). In particular, when requesting special employment, the control unit 20 also transmits information for requesting special employment to the quality inspection apparatus 1.
In addition, since the tolerance is set theoretically, even if the measurement result is out of the tolerance, it may be outside the tolerance range that is practically allowable in consideration of the man-hour and cost to be recreated. The degree of strictness required for a certain element of a certain part is determined from, for example, the experience of the supplier.

  If it is determined that special employment is not required (step S19: NO), the control unit 20 outputs a manufacturing correction instruction using the output device 26 (step S20), and the process is terminated.

  The control unit 10 of the quality inspection apparatus 1 receives the manufacturing lot number, the CAVI number, the mold number, the supplier measurement value, and the quality change information transmitted from the communication apparatus 2 at the communication unit 18, and the received information is measured by the supplier. Register in the value DB 17e (step S22). When the information for requesting the special employment is received, the control unit 10 outputs that the special employment is requested by the output device 16.

FIG. 11 is a schematic diagram illustrating an example of a component selection screen and a buyer data input screen. When the process of step S22 is completed, the control unit 10 displays the part selection screen shown in FIG. 11A and the production part selection screen shown in FIG. 11B, and the parts delivered by the input device 15 Is selected (step S23). It should be noted that parts that can omit all measurement points and have no quality change information are configured not to be displayed on the part selection screen.
Then, the control unit 10 determines whether or not the selected part is a mass production part based on the part status information (step S24). When it determines with it being a mass-production part (step S24: YES), the control part 10 reads the information which shows the possibility of the omission of measurement registered correspondingly for every measurement location from measurement location DB17b, and the read said information and Based on the quality change information received in step S22, a measurement required point is specified (step S25). Specifically, a measurement location where the possibility of quality change is specified by the quality change information is specified as a measurement required location regardless of whether the measurement can be omitted. Moreover, the measurement location designated that measurement omission is impossible is specified as a measurement required location. In other words, the measurement location where the possibility of quality change is not specified by the quality change information and the measurement omission is specified is specified as a measurement location that does not require measurement.

  When it determines with it not being a mass-production part by step S24 (step S24: NO), the control part 10 specifies all the measurement locations as a measurement required location (step S26). When the process of step S25 or step S26 is completed, the control unit 10 determines whether or not there is a measurement point (step S27).

If it is determined that there is a measurement point that needs to be measured (step S27: YES), the control unit 10 displays the buyer data input screen shown in FIG. 11 (c), and displays the measured value of each measurement point measured on the buyer side. The information received by the input device 15 is registered in the buyer measurement value DB 17d (step S28). In the buyer data input screen, the line corresponding to the dimension ID that can be omitted is grayed out.
Hereinafter, the measurement value measured on the buyer side is referred to as a buyer measurement value. In the processing stage of step S28, whether or not measurement can be omitted may be accepted and registered.

  FIG. 12 is an explanatory diagram conceptually showing the record layout of the buyer measurement value DB 17d. The record layout of the buyer measurement value DB 17d is the same as that of the supplier measurement value DB 17e. The buyer measurement value DB 17d stores the buyer measurement value “n number” for each of a plurality of measurement points (dimension IDs 001 to 005) for each manufacturing unit determined by “product lot number”, “CAVI number”, and “mold number”. ", For example, three.

  Then, the control unit 10 compares the buyer measurement value received in step S28 and the tolerance registered in the measurement location DB 17b to determine whether or not the quality is acceptable (step S29). The part that is rejected in step S29 has a part that exceeds the tolerance range, and should be returned to the supplier. Note that even a part that has passed on the supplier side may be rejected on the buyer side. This is because the measuring method on the supplier side and the measuring method on the buyer side are not necessarily the same. Even if the measuring machines are the same, the measured values may be different due to variations in human dependence such as the measuring person's habit.

  Note that information regarding a part that is rejected in step S29, that is, a part whose supplier measurement value is out of the tolerance range, is registered in the NG parts DB 17h. Also, the management status of the rejected parts is registered in the NG parts management status DB 17i.

  Next, the control unit 10 determines whether or not a request for checking the suitability of the measurement method has been received by the input device 15 (step S30). When it is determined that the request for checking the suitability of the measurement method has been received (step S30: YES), the control unit 10 displays a component selection screen (see FIG. 13A) and accepts the component selection by the input device 15 ( Step S31), based on the supplier measurement value, process capability indexes Cp and Cpk related to the measurement required points are calculated (Step S32). Moreover, the control part 10 calculates the process capability index | exponent Cp and Cpk which require a measurement required part based on a buyer measurement value (step S33).

Next, the control unit 10 compares the supplier-side process capability indexes Cp and Cpk with the buyer-side process capability indexes Cp and Cpk to determine the suitability of the measurement method for each measurement location (step S34). Specifically, if the difference in each process capability index Cp is less than the ΔCp warning value, it is determined to be acceptable, and if it is determined to be greater than or equal to the ΔCp warning value, it is determined to be unacceptable. Similarly, when the difference of each process capability index | exponent Cpk is less than (DELTA) Cpk warning value, it determines with a pass, and when it determines with it being more than (DELTA) Cpk warning value, it determines with disqualification.
Note that the determination result obtained by the process of step S34 is registered in the analysis result DB 17f. Moreover, although it has comprised so that the suitability of a measuring method may be determined with the difference of a process capability index | exponent, you may comprise so that a supplier measured value and a buyer measured value may be compared directly. Note that, when manufacturing variation within a lot is relatively allowed, a difference in process capability index may be used.

  FIG. 13 is a schematic diagram illustrating an example of a component selection screen and a comparison data screen. FIG. 13A is a schematic diagram of a component selection screen, and FIG. 13B is a schematic diagram of a comparison data screen. A list for comparing the measurement methods on the buyer side and the supplier side is displayed on the comparison data screen. In the list, dimension IDs 002, 003, 005 corresponding to the measurement locations of the selected parts are arranged in the vertical direction, and for each dimension ID, a standard value, a standard upper limit, a standard lower limit, a shape feature, a difference Cp, The difference Cpk, the supplier Cp, the supplier Cpk, the buyer Cp, and the buyer Cpk are arranged in the horizontal direction. The suppliers Cp and Cpk are process capability indexes calculated based on the supplier measurement values, and the buyers Cp and Cpk are process capability indexes calculated based on the buyer measurement values. Further, when the difference Cp and the difference Cpk are equal to or less than the ΔCp warning value and the ΔCpk warning value, respectively, the cells related to the corresponding dimension ID are grayed out, indicating that there is no problem in the measuring method on the supplier side. When the difference Cp exceeds the ΔCp warning value or when the difference Cpk exceeds the ΔCpk warning value, the cells related to the corresponding dimension ID are displayed in a non-grayed out state.

  Next, when the control chart creation button on the comparison data screen is operated, the control unit 10 creates a control chart for each of the supplier and the buyer side based on the supplier measurement value and the buyer measurement value, and outputs it to the output device 16. (Step S35).

FIG. 14 is a schematic diagram illustrating an example of a control chart comparison screen. On the control chart comparison screen, a control chart obtained from the supplier measurement value and a control chart obtained from the buyer measurement value are arranged side by side. The control chart displayed at the top is an Xbar-R control chart obtained from supplier measurements. The Xbar-R chart is a combination of an Xbar (average value) chart and an R (range) chart. The horizontal axis represents the lot number, and the vertical axis Xbar represents the average value of the measured values measured for the parts included in each lot. The vertical axis R indicates the difference between the maximum value and the minimum value of the measurement values measured for the parts included in each lot.
The control chart displayed at the bottom is an Xbar-R control chart obtained from the buyer measurement values.
If the supplier and buyer measurement methods are not compatible, the difference in the measurement method appears as a difference in the Xbar-R chart.

  When the process of step S35 is completed, when it is determined in step S27 that there is no measurement point required (step S27: NO), or when it is determined in step S30 that a request for confirmation of the suitability of the measurement method has not been received ( Step S30: NO), the control unit 10 determines whether or not a request for shape analysis has been received by the input device 15 (Step S36).

  When it is determined that a request for shape analysis has been received (step S36: YES), the control unit 10 displays a component selection screen, receives a component selection with the input device 15 (step S37), and based on the supplier measurement value, Suppliers Cp and Cpk are calculated (step S38). Then, the control unit 10 compares the suppliers Cp and Cpk with the Cp warning value and the Cpk warning value, respectively, and determines whether or not the quality is acceptable (step S39). The determination result in step S39 is registered in the analysis result DB 17f. In addition, various evaluation results for the parts delivered from the supplier are registered in the evaluation DB 17g. If necessary, the evaluation result may be transmitted to the supplier and viewed on the supplier side.

  FIG. 15 is a schematic diagram illustrating an example of a component selection screen and a shape feature analysis data screen. FIG. 15A is a schematic diagram of a component selection screen, and FIG. 15B is a schematic diagram of a shape feature analysis data screen. The shape feature analysis data screen is a list of quality evaluation results calculated based on the supplier measurement values. In the quality evaluation result list, dimension IDs 001 to 005 corresponding to each measurement location of the selected part are arranged in the vertical direction, and for each dimension ID, a standard value, a standard upper limit, a standard lower limit, a shape feature, a supplier Cp, Supplier Cpk is arranged in the horizontal direction. Further, when the supplier Cp and the supplier Cpk are equal to or less than the Cp warning value and the Cpk warning value, respectively, the cells related to the corresponding dimension ID are grayed out to indicate that there is no problem in the dimension. When the supplier Cp exceeds the Cp warning value, or when the supplier Cpk exceeds the Cpk warning value, the grid associated with the corresponding dimension ID is displayed in a non-grayed out state, indicating that there is a problem with the dimension.

  Next, when the management chart creation button on the shape analysis screen is operated, the control unit 10 creates a management chart on the supplier side based on the supplier measurement value, and outputs it on the output device 16 (step S40).

  FIG. 16 is a schematic diagram illustrating an example of a control chart display screen. On the control chart display screen, a control chart obtained from the supplier measurement values, for example, an Xbar-R control chart is displayed.

  When the process of step S40 is completed, or when it is determined in step S36 that a request for shape analysis has not been received (step S36: NO), the control unit 10 determines whether or not to finish accepting the part (step S36: NO). Step S41). When it determines with not complete | finishing reception of components (step S41: NO), the control part 10 returns a process to step S23. When it determines with complete | finishing reception of components (step S41: YES), the control part 10 complete | finishes a process.

  FIG. 17 is a data flow diagram showing a quality inspection method for prototype parts using the quality inspection system. First, the buyer creates a design model of a part to be prototyped, and sets design values, tolerances, and the like (step S51). And a buyer registers the measurement location information required for quality control of components into measurement location DB17b using the quality inspection apparatus 1 (step S52). The registered part design model, measurement location information, and the like are transmitted to the supplier side via the communication network N.

  The supplier manufactures a part based on the design model (step S53), and measures the dimension of the manufactured part (step S54). That is, the supplier measures the dimensions of the parts with the measurement method and the measurement device specified for each measurement point specified by the measurement point information. Then, the supplier inputs the lot number, the CAVI number, and the mold number of the part, inputs the measured value of the designated number of samples into the communication device 2 for each measurement location, and registers it in the supplier measured value DB 27.

  The supplier uses the communication device 2 to determine whether the measured value is within the tolerance range for each measurement location (step S55), and confirms the quality of the part. When the measured value is out of the tolerance range (step S55: NO), it is determined whether or not special employment is required (step S56). When it is determined that special adoption is required (step S56: YES), the supplier transmits the supplier measurement value and the special adoption request related to the manufactured part to the quality inspection apparatus 1 using the communication device 2, and the manufactured part The buyer is asked whether delivery is possible, and if it is determined that delivery is possible, the parts are delivered. When it is determined that special employment is not required (step S56: NO), the supplier repeats the manufacturing correction of the parts so that the measured value is within the tolerance range (step S57). In step S55, when the measured value is within the tolerance range (step S55: YES), the supplier uses the communication device 2 to transmit the supplier measured value related to the manufactured part to the quality inspection device 1, Deliver manufactured parts to buyers.

When the buyer accepts the delivered part, the buyer uses the quality inspection apparatus 1 to measure the dimension of the part (step S58). When accepting prototypes, buyers must also inspect. The buyer displays the comparison data screen and the control chart comparison screen using the quality inspection apparatus 1, and determines whether or not the measurement method on the supplier side is acceptable (step S59). If it is not acceptable (step S59: NO), the buyer instructs the measurement method so that the supplier-side measurement method and the buyer-side measurement method are compatible (step S60).
If the measurement method on the supplier side and the measurement method on the buyer side are approximated, it will be possible for the supplier side to inspect the quality of the product without error by the inspection on the communication device 2 side. It is possible to reduce refusal of acceptance and manufacturing correction.

When the measurement method is acceptable (step S59: YES), the buyer should appropriately reduce the number of n or omit the measurement, and perform the measurement and inspection on the buyer side only at the change point where there is a possibility of quality change. (Step S61).
If the measurement method on the supplier side and the measurement method on the buyer side are approximated, the measurement of parts on the buyer side can be omitted and the quality can be managed from the supplier measurement values. As a result, the acceptance inspection work on the buyer side is reduced.

  In addition, the buyer displays a shape analysis data screen and a control chart screen using the quality control device, and checks whether there is a variation for each shape feature (step S62). When it is determined that the variation is relatively large (step S62: NO), various examinations such as examination of design tolerance and change of manufacturing method are performed to ensure the quality of the parts (step S63).

  When it is determined that there is not enough variation for each shape feature (step S62: YES), the buyer displays a buyer data input screen using the quality inspection apparatus 1, and the buyer measurement value is within the tolerance range. It is determined whether it is within (step S64). When it is determined that the buyer measurement value is out of the tolerance range (step S64: NO), the buyer asks the supplier of the part for manufacturing correction of the part, and the supplier performs manufacturing correction (step S65).

When it is determined that the buyer measurement value is within the tolerance range (step S63: YES), the quality inspection process is finished.
Note that the processing order of steps S59 to S65 is not limited to the above-described procedure. This is just an example.

  FIG. 18 is a data flow diagram showing a quality inspection method for mass-produced parts using the quality inspection system. Similar to steps S53 to 57, the supplier executes steps related to manufacturing, measurement, quality inspection, and manufacturing correction in steps S71 to S75.

  When the buyer accepts the delivered parts, the buyer uses the quality inspection apparatus 1 to check whether there is a measurement item that needs to be measured (step S76). In the case of mass-produced parts, the quality is stable to some extent, so that measurement can be omitted as appropriate. If it is determined that there is a measurement-necessary part (step S76: YES), the same process as steps S58 to S65 described above is performed in steps S77 to S84 for the measurement-required part. When it is determined that there is no measurement point required (step S76: NO), the buyer can omit the measurement of dimensions and the determination of pass / fail of the measurement method.

  In the quality inspection device 1, the quality inspection system, the quality inspection method, the computer program 19a, and the recording medium 19 configured as described above, the quality of delivered parts is ensured and the inspection work in the buyer is reduced. be able to.

  Further, the suitability of the measurement method on the supplier side can be determined, and management can be performed so that the measurement methods at the buyer and the supplier are substantially the same. If the measurement method is substantially the same, the measurement on the buyer side can be omitted and the burden of inspection work can be reduced. In the supplier, it is possible to reliably determine the quality of parts on the communication device 2 side, and the manufacturing and delivery efficiency can be improved.

  Furthermore, it is possible to calculate a process capability index for each measurement location based on the supplier measurement value, and to determine whether the quality is acceptable based on the calculated process capability index. In some cases, design tolerances and manufacturing methods can be examined to improve the quality of parts.

  Furthermore, because it is configured to determine whether measurement is necessary based on the quality change information, the parts on the lot that may change in quality are measured and inspected on the buyer side as well. A balance between quality assurance and reduced inspection work at the buyer can be ensured.

  Furthermore, whether or not measurement can be omitted can be registered as appropriate using the input device 15 of the quality inspection apparatus 1.

  Furthermore, since the quality inspection device 1 can acquire the supplier measurement value from the communication device 2 via the communication network N, it is not necessary to input the supplier measurement value to the quality inspection device 1 when parts are delivered. Incoming inspection of parts can be performed efficiently.

  Furthermore, the communication device 2 side is configured to perform pass / fail judgment of quality using tolerances, and when it passes, the supplier measurement value is transmitted to the quality inspection device 1, so that the buyer performs quality inspection at the supplier. It is only necessary to inspect and accept only the inspected objects that have passed, and the acceptance inspection efficiency is improved. In addition, since the buyer can make a pass / fail judgment on the quality of the component on the communication device 2 side, it is possible to efficiently perform the manufacturing correction and delivery of the component.

Furthermore, since the measurement points not measured by the buyer are also configured to acquire the measurement values of the measurement points at the supplier, the buyer must grasp all the measurement results of the supplier and manage the quality. It is possible to prevent the supplier from recognizing measurement points that are omitted by the buyer. This is to prevent the supplier from pulling out the hands, to give the supplier a sense of tension, and to ensure thorough quality control.
Therefore, it is possible to save the time and effort of the measurement at the buyer, and it is possible to thoroughly control the quality at each measurement point regardless of whether the measurement can be omitted or not.

  Furthermore, since it is a configuration in which a special adoption request can be made for a part that has been rejected on the supplier side, the buyer can easily accept delivery of a rejected part from the measured value, that is, a manufacturing correction request. This makes it possible to respond more flexibly to delivered parts.

  In this embodiment, the quality inspection system for inspecting the quality of delivered parts has been described. However, the object of quality inspection is not limited to parts, but the items delivered from the supplier to the delivery destination. A product, a semi-finished product, or the like may be used as long as it is an inspection object that requires an acceptance inspection.

  In addition, the measurement location as the measurement item and the dimensions of the part as the measurement content have been described, but other elements necessary for managing the quality of the inspected object, such as the electrical identification of the inspected object, electromagnetic characteristics, elasticity, color Alternatively, it may be configured to inspect a material or the like.

  Furthermore, in the present embodiment, the case where the supplier measurement value is input using an input device such as a keyboard or a mouse has been described. However, the measurement device that can directly input the component dimension measurement value to the communication device is used. May be. Similarly, in the quality inspection apparatus on the buyer side, a measuring device that can directly input a buyer measurement value of a part dimension to the quality inspection apparatus may be used.

  Furthermore, although the example which transmits a supplier side measured value to a quality inspection apparatus via a communication network was demonstrated, the input method of a supplier measured value is not limited to this. For example, the quality inspection apparatus may be configured to acquire the supplier measurement value from a recording medium such as a flexible disk or a CD-R on which the supplier measurement value is recorded. Moreover, you may comprise so that a supplier measured value may be acquired with an email.

Furthermore, in this embodiment, it is configured to register whether or not measurement can be omitted for each measurement location of parts regardless of differences in supplier measurement technology. However, the measurement location, supplier ID, and omission are omitted. Whether or not measurement is necessary may be registered for each supplier and measurement location.
When configured in this way, for the parts delivered from a supplier whose measurement technology is judged to be sufficiently high, the buyer's measurement is omitted, and the parts delivered from a supplier whose measurement technology is judged not sufficiently high Can be measured and inspected on the buyer side, ensuring the quality of the object to be inspected, and receiving inspection of the object to be inspected more efficiently.

  Furthermore, in the present embodiment, it is configured to determine whether or not the quality is acceptable and whether or not the measurement method is appropriate based on the process capability index. However, whether the quality is acceptable or not is determined based on other indicators. You may judge.

  Furthermore, in the present embodiment, even if the inspection on the supplier side is rejected, the special adoption is requested and the measured value is transmitted to the quality inspection device. The measurement value may be transmitted. In this case, the buyer can accept only parts with reliable quality, and can omit the work of determining whether the quality is guaranteed.

  It should be understood that the embodiment disclosed this time is illustrative in all respects and not restrictive. The scope of the present invention is defined not by the above-mentioned meaning but by the scope of claims for patent, and is intended to include all modifications within the scope and meaning equivalent to the scope of claims for patent.

It is a schematic diagram which shows the structure of the quality inspection system which concerns on embodiment of this invention. It is a block diagram which shows typically the structure of a quality inspection apparatus and a communication apparatus. It is a flowchart which shows the process sequence of the control part which concerns on quality control. It is a flowchart which shows the process sequence of the control part which concerns on quality control. It is a flowchart which shows the process sequence of the control part which concerns on quality control. It is explanatory drawing which shows notionally the record layout of components information DB. It is explanatory drawing which shows notionally the record layout of measurement location DB. It is explanatory drawing which shows notionally the record layout of shape feature DB. It is a schematic diagram which shows an example of a components selection screen and a supplier data input screen. It is explanatory drawing which shows notionally the record layout of supplier measurement value DB. It is a schematic diagram which shows an example of a components selection screen and a buyer data input screen. It is explanatory drawing which shows notionally the record layout of buyer measured value DB. It is a schematic diagram which shows an example of a components selection screen and a comparison data screen. It is a schematic diagram which shows an example of a control chart comparison screen. It is a schematic diagram which shows an example of a components selection screen and a shape characteristic analysis data screen. It is a schematic diagram which shows an example of a control chart display screen. It is a data flow figure which shows the quality inspection method of the prototype parts using a quality inspection system. It is a data flow figure showing a quality inspection method of mass production parts using a quality inspection system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Quality inspection apparatus 2 Communication apparatus 10 Control part 17 Database 17a Parts DB
17b Measurement location DB
17c Shape feature DB
17d Bayer measurement value DB
17e Supplier measurement DB
18 Communication Unit 19 Recording Medium 19a Computer Program 20 Control Unit 27 Supplier Measurement DB
28 Communication Department N Communication Network

Claims (27)

In a quality inspection device that inspects the quality of inspected items delivered from the supplier to the supplier,
A plurality of measurement items for inspecting the quality of the inspected object, and a measurement item table associating with each measurement item whether measurement can be omitted at the delivery destination;
First acquisition means for acquiring a measurement result at a delivery source of each of the plurality of measurement items;
A second acquisition means for referring to the measurement item table and acquiring a measurement result at the delivery destination of the measurement item that requires measurement at the delivery destination;
A quality inspection device comprising: quality inspection means for inspecting the quality of an object to be inspected based on the measurement results acquired by the first and second acquisition means. The quality inspection means includes
Appropriate determination of the measurement method for each measurement item by comparing each measurement result acquired by the first and second acquisition means to determine whether the measurement method of the delivery source is compatible with the measurement method of the delivery destination The quality inspection apparatus according to claim 1, further comprising: means. The measurement method suitability determination means includes
First calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at the delivery source;
A second calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement at the delivery destination based on a measurement result at the delivery destination;
The quality inspection apparatus according to claim 2, further comprising: means for comparing each process capability index calculated by the first and second calculation means for each measurement item. Means for associating a measurement device to be used for measurement for each measurement item and registering it in the measurement item table;
Based on the difference between each process capability index calculated by the first and second calculation means, a conformity determination value for determining whether or not the measurement method conforms to the delivery source and the delivery destination for each measuring device. With associated tables and
The measurement method suitability determination means includes
Based on the table, means for specifying a conformity determination value corresponding to each measurement item;
Means for judging whether or not the measuring method is suitable at the delivery source and the delivery destination by comparing the difference between the process capability indexes calculated by the first and second calculation means and the corresponding conformity judgment value. The quality inspection apparatus according to claim 3, further comprising: The quality inspection means includes
The apparatus according to claim 1 or 2, further comprising means for calculating a process capability index indicating a process capability related to each of the plurality of measurement items based on the measurement result acquired by the first acquisition unit. The quality inspection device described. A tolerance is associated with each measurement item,
The quality inspection means includes
6. The apparatus according to claim 1, further comprising: a unit configured to determine whether the quality is acceptable based on a measurement result of the measurement item acquired by the second acquisition unit and a tolerance of the measurement item. The quality inspection device described. Quality change information acquisition means for acquiring quality change information indicating the possibility that the quality of the inspection object has changed for each measurement item;
7. A means for specifying a measurement item that requires measurement at a delivery destination based on the quality change information acquired by the quality change information acquisition means and the measurement item table. The quality inspection apparatus as described in any one. Accepting means for accepting for each measurement item whether measurement can be omitted at the delivery destination;
8. The apparatus according to claim 1, further comprising: a unit that registers whether or not measurement omission accepted by the accepting unit is associated with a measurement item in the measurement item table. Quality inspection device. A quality inspection device according to any one of claims 1 to 8, and a communication device of a delivery source,
The communication device
Means for receiving a measurement result at a delivery source of each of the plurality of measurement items;
A measurement result transmitting means for transmitting the received measurement result, and
The first acquisition means includes
A quality inspection system comprising: means for receiving a measurement result transmitted from the communication device. The quality inspection device
Means for transmitting a tolerance of each of the plurality of measurement items and each measurement item;
The communication device
Means for receiving measurement items and tolerances transmitted from the quality inspection device;
Means for inspecting the quality of the inspected object based on the received measurement result and tolerance,
The measurement result transmitting means includes
The quality inspection system according to claim 9, wherein when the quality inspection is not passed, the measurement result and information requesting delivery of the inspection object are transmitted to the quality inspection device. In the quality inspection method for inspecting the quality of the inspection object delivered from the supplier to the supplier,
Preparing a plurality of measurement items for quality control of the inspected object, and a measurement item table that associates whether or not measurement can be omitted at the delivery destination for each measurement item;
Obtaining a measurement result at a delivery source of each of the plurality of measurement items;
Referring to the measurement item table, obtaining a measurement result at the delivery destination of the measurement item requiring measurement at the delivery destination; and
A quality inspection method comprising: a quality inspection step for inspecting quality based on each obtained measurement result. The quality inspection step includes
It has a measurement method suitability determination step that determines, for each measurement item, whether the measurement method of the supplier conforms to the measurement method of the supplier by comparing the measurement result at the supplier and the measurement result at the supplier. The quality inspection method according to claim 11. The measuring method suitability determining step includes:
A step of calculating a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at a delivery source;
Calculating a process capability index indicating a process capability related to a measurement item requiring measurement at the delivery destination based on the measurement result at the delivery destination;
The quality inspection method according to claim 12, further comprising a step of comparing the calculated process capability indexes. Associating a measurement device to be used for measurement for each measurement item and registering it in the measurement item table;
Based on the difference between each process capability index calculated by the first and second calculation means, a conformity determination value for determining whether or not the measurement method conforms to the delivery source and the delivery destination for each measuring device. Preparing an associated table, and
The measuring method suitability determining step includes:
Identifying a conformity determination value corresponding to each measurement item based on the table;
And a means for determining whether or not the measuring method is adapted at the supplier and the delivery destination by comparing the difference between the calculated process capability indices and the corresponding conformity judgment value. 14. The quality inspection method according to 13. The quality inspection step includes
The quality inspection method according to claim 11 or 12, further comprising a step of calculating a process capability index indicating a process capability related to each of the plurality of measurement items based on a measurement result at a supplier. The quality inspection step includes
The quality inspection method according to any one of claims 11 to 15, further comprising a step of inspecting quality based on a measurement result of a measurement item at a delivery destination and a tolerance of the measurement item. Obtaining quality change information for each measurement item indicating the possibility that the quality of the inspection object has changed;
The quality according to any one of claims 11 to 16, further comprising: a step of identifying a measurement item that needs to be measured at a delivery destination based on the acquired quality change information and the measurement item table. Inspection method. A step of accepting for each measurement item whether measurement can be omitted at the delivery destination;
The quality inspection method according to any one of claims 11 to 17, further comprising a step of associating whether or not accepted measurement omission is associated with a measurement item and registering the measurement in the measurement item table. A computer program that, when executed by a computer, causes the computer to inspect the quality of an inspection object delivered from a supplier to a delivery destination,
The computer,
A means for identifying measurement items that need to be measured at the delivery destination based on a plurality of measurement items for quality inspection of the inspected object and a measurement item table that associates whether or not measurement can be omitted at the delivery destination for each measurement item ,as well as,
Quality means for inspecting the quality based on the measurement results obtained at the delivery source of each of the plurality of measurement items and the measurement results obtained at the delivery destination of the measurement items that require measurement at the delivery destination,
A computer program that functions as a computer program.   The computer further measures the measurement result for each measurement item by comparing the measurement result at the delivery source and the measurement result at the delivery destination to determine whether the measurement method of the delivery source is compatible with the measurement method of the delivery destination. The computer program according to claim 19, wherein the computer program is made to function as suitability determination means. The computer,
First calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at the delivery source;
A second calculation means for calculating a process capability index indicating a process capability related to a measurement item requiring measurement at a delivery destination based on a measurement result at the delivery destination; and
Means for comparing each process capability index calculated by the first and second calculation means;
The computer program according to claim 19, wherein the computer program is made to function as: The computer,
Means for associating measuring equipment to be used for measurement for each measurement item,
Based on the difference between each process capability index calculated by the first and second calculation means, a conformity determination value for determining whether or not the measurement method conforms to the delivery source and the delivery destination for each measuring device. A means for specifying a conformity determination value corresponding to each measurement item based on the associated table; and
Means for judging whether or not the measuring method is suitable at the delivery source and the delivery destination by comparing the difference between the process capability indexes calculated by the first and second calculation means and the corresponding conformity judgment value. ,
The computer program according to claim 21, wherein the computer program is made to function as:   20. The computer according to claim 19, wherein the computer is further caused to function as means for calculating a process capability index indicating a process capability related to each of the plurality of measurement items based on a measurement result at a supplier. 20. The computer program according to 20.   24. The computer according to any one of claims 19 to 23, wherein the computer is further caused to function as a unit for determining whether the quality is acceptable based on a measurement result of a measurement item at a delivery destination and a tolerance of the measurement item. Computer program described in 1.   The computer is further caused to function as a means for specifying a measurement item that needs to be measured at a delivery destination based on quality change information indicating a possibility that the quality of the inspection object has changed and the measurement item table. The computer program according to any one of claims 19 to 24.   Causing the computer to function as a means for registering in the measurement item table the measurement omission availability in association with the measurement item when the computer accepts the measurement omission in the delivery destination for each measurement item. The computer program according to any one of claims 19 to 25, wherein the computer program is characterized in that:   27. A computer-readable recording medium on which the computer program according to any one of claims 19 to 26 is recorded.

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