JP2009015532A - Manufacturing process monitoring apparatus, method, program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing process monitoring apparatus, method, program and recording medium for much more reducing the information quantity of observation information acquired by observing a manufacturing process. <P>SOLUTION: A change instruction part 15 judges whether or not an inspection result shown by inspection information stored in an inspection information storage part 12 satisfies predetermined judgment conditions for judging the necessity of the change of an observation process which should be selected as an observation object. The predetermined judgment conditions are, for example, such conditions that a defect shown by the inspection result is a serious defect, such conditions that the same defects continuously arise, and such conditions that the same defects arise discontinuously or different defects continuously or discontinuously arise. When the inspection result satisfies the predetermined judgment conditions, the observation process of a new observation object is determined based on a change destination information table, and the determined observation process is instructed through an LAN 40 to an observation device 20 so as to be changed to the observation process of the observation object. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a manufacturing process monitoring apparatus, method, program, and recording medium capable of monitoring a plurality of manufacturing processes in a production line, and in particular, in a production line comprising a plurality of manufacturing processes and at least one inspection process. The present invention relates to a manufacturing process monitoring apparatus, method, program, and recording medium for monitoring one manufacturing process by defining one manufacturing process as an observation process to be observed.

  In production lines that produce products, product defects often occur unexpectedly and temporarily, and it is highly possible that the cause of the failure cannot be determined by visual monitoring alone. It is done.

Therefore, instead of monitoring only by the visual observation of the worker, the VTR (Video
(Tape Recorder) may be used. However, when a VTR is used as an observation device, the observation points must be recorded continuously for a long time, and most of the video tapes recorded with the VTR are wasted at the observation points where the occurrence of defects is small. End up.

  As a conventional technique, there is a production process monitoring apparatus capable of quickly investigating a cause when a defect occurs and responding to it in a production line where a plurality of lines installed in series and in parallel branch and merge. This production process monitoring device is provided with a plurality of process work observation points in each of a plurality of production processes, and observes observation information on the work status of each workpiece in time series, and the observation information is received for each work piece. Stored together with specific information for specifying the processed product. The observation information is, for example, measurement information obtained by measuring a workpiece and still image information obtained by photographing the workpiece. Then, based on the unique information of the workpiece at the time of abnormality detection in the production process, the observation information at each observation point of the production process of this workpiece is searched from the stored observation information, and when the abnormality is detected Display retroactively.

  In the production process monitoring device, since the observation information is still image information, it is not necessary to record continuously for a long time, the amount of information to be stored can be reduced, and the waste of the video tape can be eliminated (for example, Patent Document 1).

JP-A-6-249678

  However, the production process monitoring device of the prior art is to observe and store observation information at all observation points, and the amount of information to be stored is reduced as compared with the case of continuous recording for a long time with a VTR. However, the amount of observation information to be stored is still large.

  The objective of this invention is providing the manufacturing process monitoring apparatus, method, program, and recording medium which can reduce the information content of the observed information which observed the manufacturing process more.

The present invention comprises an observation means for observing at least one of the plurality of manufacturing steps for manufacturing a workpiece,
Inspection information acquisition means for acquiring inspection information representing an inspection result inspected in at least one inspection step for inspecting a product;
Inspection information storage means for storing inspection information acquired by the inspection information acquisition means;
When the inspection result indicated by the inspection information stored by the inspection information storage unit satisfies a predetermined determination condition for determining whether or not the manufacturing process to be observed by the observation unit needs to be changed, based on the inspection result A manufacturing process monitoring apparatus comprising: a control unit that newly determines a manufacturing process to be an observation target and changes the manufacturing process to be observed by the observation unit to the determined manufacturing process.

In the present invention, the inspection information includes information indicating the presence / absence of a defect and whether the defect is a serious defect,
The predetermined determination condition is:
The condition that the latest inspection information stored by the inspection information storage means indicates that there is a defect and that the defect is a serious defect;
The condition that the latest inspection information indicates that there is a defect, and the defect is not a serious defect, but is a defect that has occurred in a predetermined number of consecutive consecutive times in the same manufacturing process,
Or the latest inspection information indicates that there is a defect, and the defect is not a serious defect, but the same defect is discontinuous, different defects are consecutive, or different defects are discontinuous in the same inspection process It is a condition that it is a condition that a predetermined reference discontinuity has occurred.

In the present invention, the inspection information includes information indicating a symptom of a defect,
For each manufacturing process observable by the observing means, further includes correspondence information storage means for storing correspondence information in which a symptom of a defect occurring in each manufacturing process is associated.
The control means identifies a manufacturing process corresponding to a failure symptom indicated by the inspection information based on the correspondence information stored by the correspondence information storage means, and determines the identified manufacturing process as a new observation target manufacturing process. It is characterized by that.

The present invention also includes observation information storage means for storing observation information representing observation results observed by the observation means,
Output means for outputting observation information stored by the observation information storage means.

Further, the present invention is a manufacturing process monitoring method for monitoring a manufacturing process using an observation device for observing at least one manufacturing process among a plurality of manufacturing processes for manufacturing a workpiece,
An inspection information acquisition step for acquiring inspection information representing an inspection result inspected in at least one inspection step for inspecting the product;
An inspection information storage step for storing the inspection information acquired in the inspection information acquisition step;
When the inspection result indicated by the inspection information stored in the inspection information storing step satisfies a predetermined determination condition for determining whether or not the manufacturing process to be observed by the observation apparatus needs to be changed, based on the inspection result A manufacturing process monitoring method comprising: a control step of newly determining a manufacturing process to be observed and changing the manufacturing process to be observed by the observation apparatus to the determined manufacturing process.

In addition, the present invention provides an inspection information acquisition step for acquiring inspection information representing an inspection result inspected in at least one inspection step for inspecting a product,
An inspection information storage step for storing the inspection information acquired in the inspection information acquisition step;
Whether or not the inspection result indicated by the inspection information stored in the inspection information storage step is to be changed by the observation apparatus that observes at least one of the plurality of manufacturing processes for manufacturing the article to be manufactured. When a predetermined determination condition for determining the condition is satisfied, a manufacturing process to be newly observed is determined based on the inspection result, and the manufacturing process to be observed by the observation apparatus is changed to the determined manufacturing process. It is a program for causing a computer to execute control steps to be changed.
The present invention is also a computer-readable recording medium on which the program is recorded.

  According to the present invention, at least one manufacturing process among a plurality of manufacturing processes for manufacturing a workpiece is observed by the observation means, and at least one inspection process for inspecting the workpiece by the inspection information acquisition means. Inspection information representing the inspection result is acquired, and the inspection information acquired by the inspection information acquisition unit is stored by the inspection information storage unit.

  When the inspection result indicated by the inspection information stored by the inspection information storage unit satisfies the predetermined determination condition for determining whether the observation unit needs to change the manufacturing process to be observed by the control unit, A manufacturing process to be newly observed is determined based on the inspection result, and the manufacturing process to be observed by the observation means is changed to the determined manufacturing process. Therefore, it is possible to observe only the manufacturing process in which a defect that satisfies a predetermined determination condition occurs, and the amount of observation information obtained by observing the manufacturing process can be reduced.

  According to the present invention, when monitoring a manufacturing process using an observation device that observes at least one manufacturing process among a plurality of manufacturing processes for manufacturing the manufactured object, the inspection information acquisition step includes: The inspection information representing the inspection result inspected in at least one inspection process for inspecting. In the inspection information storage step, the inspection information acquired in the inspection information acquisition step is stored. In the control step, when the inspection result indicated by the inspection information stored in the inspection information storage step satisfies a predetermined determination condition for determining whether or not the manufacturing process to be observed by the observation apparatus is necessary, A manufacturing process to be newly observed is determined based on the inspection result, and the manufacturing process to be observed by the observation apparatus is changed to the determined manufacturing process.

  Therefore, if the manufacturing process monitoring method according to the present invention is applied to a computer, observation can be made focusing on a manufacturing process in which a defect that satisfies a predetermined determination condition has occurred, and the amount of observation information obtained by observing the manufacturing process can be further increased. Can be reduced.

  According to the present invention, an inspection information acquisition step for acquiring inspection information representing an inspection result inspected in at least one inspection step for inspecting a workpiece, and inspection information acquired in the inspection information acquisition step are stored. An inspection apparatus that observes at least one manufacturing process among a plurality of manufacturing processes for manufacturing a workpiece is an observation target, the inspection result indicated by the inspection information storage step and the inspection information stored in the inspection information storage step. When a predetermined determination condition for determining whether or not the manufacturing process needs to be changed is satisfied, a manufacturing process to be newly observed is determined based on the inspection result, and the manufacturing process to be observed by the observation apparatus is determined. The control step for changing to the determined manufacturing process can be provided as a program for causing a computer to execute the control step.

  The present invention can also be provided as a computer-readable recording medium on which the program is recorded.

  FIG. 1 is a block diagram showing a functional configuration of a manufacturing process monitoring apparatus 1 according to an embodiment of the present invention. The manufacturing process monitoring method according to the present invention is processed by the manufacturing process monitoring apparatus 1.

  The manufacturing process monitoring apparatus 1 includes a computer 10, a plurality of observation apparatuses 20, and at least one inspection information acquisition apparatus 30. The computer 10, the observation device 20, and the inspection information acquisition device 30 are each connected to a communication line such as a LAN (Local Area Network) 40, and transmit / receive information via the LAN 40.

  FIG. 1 shows the observation device 20 and the inspection information acquisition device 30 in association with production lines. The production line includes a plurality of manufacturing steps for manufacturing a workpiece, and at least one inspection step for inspecting the workpiece to detect defects, and starts from a start step and ends at an end step. An observation process is a manufacturing process included in each observation range of each observation device 20 among manufacturing processes. In FIG. 1, as an observation process, A process 1, A process 2 and A process 3 included in the observation range of the observation apparatus A, and B process 1, B process 2 and B process 4 included in the observation range of the observation apparatus B are shown. , And Z process 1, Z process 2 and Z process 6 included in the observation range of observation apparatus Z are shown. As the inspection process, an inspection process a, an inspection process b, an inspection process n, and the like are shown.

The computer 10 includes an input device such as a keyboard and a mouse, an output device that is an output means including a display device such as a display, a communication device that transmits and receives information via the LAN 40, a timekeeping device that measures time, a semiconductor memory, or a hard disk device. A storage device configured to store a program and data, and a CPU (Central that executes a program stored in the storage device and controls an input device, an output device, a communication device, and a timing device
Processing Unit). The program includes an OS (Operating System), an application program, and a program for controlling the manufacturing process monitoring apparatus 1. The computer 10 may be a generally known computer and will not be described in detail.

  The observation device 20 as an observation means is configured by an imaging device such as a VTR (Video Tape Recorder) or a digital camera. Each observation device 20 observes one observation step instructed by the change instruction unit 15 among the observation steps included in the observation range of the observation device 20. The observation device 20 observes the manufacturing work performed in the observation process instructed by the change instructing unit 15 and the product to be manufactured by the manufacturing work, and the observation information representing the observed observation results via the LAN 40 to the computer 10. Send to.

  The inspection information acquisition device 30 that is an inspection information acquisition unit is configured by, for example, a personal computer, acquires inspection information representing the inspection results performed in the inspection process, and transmits the acquired inspection information to the computer 10 via the LAN 40. To do. The inspection information acquisition device 30 acquires the inspection information input from the keyboard of the inspection information acquisition device 30 by the user, or acquires the inspection information of the inspection result by the inspection device through the communication line from the inspection device used in the inspection process. To do.

  The computer 10 includes an observation information storage unit 11, an inspection information storage unit 12, a change determination criterion information storage unit 13, a change destination information storage unit 14, and a change instruction unit 15. The observation information storage unit 11, the inspection information storage unit 12, the change determination criterion information storage unit 13, the change destination information storage unit 14, and the change instruction unit 15 are stored in a storage device included in the computer 10 by the CPU included in the computer 10. This function is realized by executing the program to be executed.

  The observation information storage unit 11 as observation information storage means receives observation information transmitted from the observation device 20 via the LAN 40 by a communication device included in the computer 10, and stores the received observation information in the computer 10. Store in the device. The observation information stored in the observation information storage unit 11 is output by an output device included in the computer 10, and the user can use the output observation information as information for investigating the cause of the failure.

  In this way, the observation information storage unit 11 stores the observation information representing the observation result observed by the observation device 20, and the output device outputs the observation information stored in the observation information storage unit 11. Information can be output and the user can refer to the output.

  The inspection information storage unit 12 serving as the inspection information acquisition unit and the inspection information storage unit receives the inspection information transmitted from the inspection information acquisition device 30 via the LAN 40 by the communication device included in the computer 10, and receives the received inspection information. Is stored in a storage device included in the computer 10. The inspection information includes information such as the presence / absence of a defect, a symptom of the defect, whether or not the defect is a serious defect, and an inspection process in which the defect is detected.

  The change determination criterion information storage unit 13 is included in a storage device included in the computer 10 and stores a serious defect defect table 50, a continuous change reference number table 51, and a discontinuous change reference number table 52 described later. The change destination information storage unit 14 that is correspondence information storage means is included in a storage device included in the computer 10 and stores a change destination information table 53 described later.

  The change instruction unit 15 serving as a control means is a predetermined determination condition for determining whether or not the observation result to be observed should be changed based on the inspection result indicated by the inspection information stored in the inspection information storage unit 12. When the determination conditions shown in the serious defect defect table 50, the continuous change reference number table 51, and the discontinuous change reference number table 52 are satisfied, an observation process of a new observation target is determined based on the change destination information table 53. The observation apparatus 20 is instructed via the LAN 40 to change the observation process to be observed to the determined observation process.

  FIG. 2 is a diagram illustrating an example of the serious defect defect table 50 stored in the change determination criterion information storage unit 13. The heavy defect defect table 50 is a table in which serious defect defects that are serious defects are registered. A serious defect is a defect that needs to be changed as an observation process to be observed when the defect occurs even once. The defect AB, defect BC, defect EA, defect ZD, and the like are registered in the heavy defect defect table 50 shown in FIG.

  FIG. 3 is a diagram illustrating an example of the continuous change reference count table 51 stored in the change determination reference information storage unit 13. The continuous change reference frequency table 51 is a table showing the continuous change reference frequency for each observation device. The continuous change reference number indicates a reference number for determining whether or not it is necessary to change an observation process to be observed when the same defect occurs continuously. In the continuous change reference number table 51 shown in FIG. 3, the continuous change reference number is “2” for the observation device A, “3” for the observation device B, “2” for the observation device C, and the observation device. Z is indicated as “4” or the like.

  FIG. 4 is a diagram illustrating an example of the discontinuous change reference count table 52 stored in the change determination reference information storage unit 13. The discontinuous change reference number table 52 is a table showing the discontinuous change reference number for each inspection process. The number of times of discontinuity change is whether the observation process to be observed should be changed when the same defect occurs discontinuously in the same inspection process and when different defects occur continuously or discontinuously. The number of times used as a reference for determining whether or not. In the discontinuous change reference number table 52 shown in FIG. 4, the discontinuous change reference number of times is “2” for the inspection step a, “1” for the inspection step b, “3” for the inspection step c, and The inspection process n is indicated as “2” or the like.

  FIG. 5 is a diagram illustrating an example of the change destination information table 53 stored in the change destination information storage unit 14. The change destination information table 53 is a table in which, for each observation device, the observation process, that is, the manufacturing process included in the observation range, and the symptom of the defect that occurs in each observation process are associated with each other. Therefore, by referring to the change destination information table 53, it is possible to determine in which observation process the defect of the defect symptom occurs for each observation device 20 based on the defect symptom.

  In the change destination information table 53 shown in FIG. 5, for the observation apparatus A, the failure symptom “failure AA” occurs in the observation process of the A process 1, and the failure symptom is “bad AB” in the observation process of the A process 2. ”Is generated, and it is shown that the defect symptom“ bad AC ”occurs in the observation process of step A3. As for the observation apparatus B, it is shown that the defect symptom “bad BF” occurs in the observation process of the B process 1, and the defect symptom “bad BG” and “bad BH” occurs in the observation process of the B process 2. ing. Furthermore, for the observation device Z, the defect symptom “defect ZL” occurs in the observation process of the Z process 1, the defect symptom “defect ZM” occurs in the observation process of the Z process 3, and the observation process of the Z process 6 It is shown that “bad ZN” occurs as a bad symptom.

  FIG. 6 is a diagram illustrating an example of the inspection information table 54 stored in the inspection information storage unit 12. The inspection information table 54 is a table showing, in chronological order, the defective symptoms of the inspection results and inspection results of the inspections performed in each inspection step for each inspection step. Index (index) is a serial number of the inspection result for each inspection process. The larger the serial number is the latest inspection result. “◯” of the inspection result indicates that there is no defect, and “X” of the inspection result indicates that there is no defect.

  In the inspection information table 54 shown in FIG. 6, for the inspection process a, the inspection result of the index “a1” is “◯”, the inspection result of the index “a2” is “x”, and the defective symptom is “bad AA”. The inspection result of “a3” is “x”, the failure symptom is “bad AA”, the inspection result of index “a4” is “◯”, and the inspection result of index “a5” is “◯”. For the inspection process b, the inspection result of the index “b1” is “x”, the failure symptom is “bad BA”, the inspection result of the index “b2” is “◯”, and the inspection result of the index “b3” is “x” The symptom is “Bad BB”, the inspection result of Index “b4” is “O”, and the inspection result of Index “b5” is “O”.

  Furthermore, for the inspection process c, the inspection result of the index “c1” is “◯”, the inspection result of the index “c2” is “◯”, the inspection result of the index “c3” is “x”, and the defective symptom is “bad CC”. The inspection result of Index “c4” is “x”, the failure symptom is “bad CD”, the inspection result of Index “c5” is “x”, and the failure symptom is “bad CA”. For the inspection process n, the inspection result of the index “n1” is “◯”, the inspection result of the index “n2” is “◯”, the inspection result of the index “n3” is “x”, and the defective symptom is “bad ZL”. The inspection result of “n4” is indicated by “◯”, and the inspection result of Index “n5” is indicated by “◯”.

  In the inspection process a, the same defect AA occurs twice in succession. In the inspection step b, discontinuous defects BA and BB occur discontinuously. In the inspection process c, consecutive different defects CC, defects CD, and defects CA are continuously generated. In the inspection process n, the defect ZL occurs once. When the defect AA, defect BA, defect BB, defect CC, defect CD, defect CA and defect ZL are referred to the heavy defect defect table 50, none of them is a serious defect.

  FIG. 7 is a schematic flowchart of the change instruction process of the computer 10. When the start of the change instruction process is instructed by the input device included in the computer 10, the process proceeds to step A1, and the change instruction process is repeated until an instruction to interrupt or end the change instruction process is issued.

  In step A1, which is an inspection information acquisition step and an inspection information storage step, the inspection information storage unit 12 determines whether inspection information has been received. When the inspection information transmitted from the inspection information acquisition device 30 is received by the communication device included in the computer 10, the inspection information storage unit 12 stores the received inspection information in the storage device included in the computer 10 and performs step A2. If the inspection information is not received, the process returns to step A1.

  In step A2, the change instruction unit 15 determines whether or not the observation process needs to be changed. Determination conditions determined in advance by inspection results indicated by the inspection information stored by the inspection information storage unit 12, specifically, determinations shown in the serious defect defect table 50, the continuous change reference number table 51, and the discontinuous change reference number table 52 If the condition is satisfied, it is determined that the observation process needs to be changed, and the process proceeds to step A3. If the inspection result indicated by the inspection information stored in the inspection information storage unit 12 does not satisfy the predetermined determination condition, the observation process Is determined to be unnecessary, and the process returns to step A1.

  In step A <b> 3, the change instruction unit 15 determines a change destination observation process based on the defective symptom indicated by the inspection information and the change destination information table 53. In step A4, the change instructing unit 15 instructs the observation device 20 that includes the observation process of the change destination in the observation range, and returns to step A1. The control steps are, for example, step A2 to step A4.

  FIG. 8 is a detailed flowchart of the change instruction process of the computer 10. The flowchart shown in FIG. 8 shows the details of the schematic flowchart of the change instruction process shown in FIG. When the start of the change instruction process is instructed by the input device included in the computer 10, the process proceeds to step B1 and the change instruction process is repeated until an instruction to interrupt or end the change instruction process is issued.

  In step B1, which is an inspection information acquisition step and an inspection information storage step, the inspection information storage unit 12 determines whether inspection information has been received. When the inspection information transmitted from the inspection information acquisition device 30 is received by the communication device included in the computer 10, the inspection information storage unit 12 stores the received inspection information in the storage device included in the computer 10, and step B2 If the inspection information is not received, the process returns to Step B1.

  In step B2, the change instruction unit 15 reads the inspection information stored by the inspection information storage unit 12, refers to the latest inspection information among the read inspection information, and the inspection result indicated by the latest inspection information is defective. It is determined whether or not it is present. If the inspection result indicates that there is a defect, the process proceeds to step B3. If the inspection result does not indicate that there is a defect, the process proceeds to step B8.

  In step B <b> 3, the change instruction unit 15 determines whether or not the inspection result indicates that a defect is a serious defect based on the defect defect table 50 stored in the change destination information storage unit 14. If it is a serious defect, the process proceeds to step B4. If it is not a serious defect, the process proceeds to step B6. In step B4, the change instruction unit 15 specifies an observation process in which a serious defect or a continuous defect has occurred based on the change destination information table 53 stored in the change destination information storage unit 14, and specifies the specified observation process. Is determined as the observation process of the change destination. In step B5, the change instruction unit 15 instructs each observation device 20 that includes the observation process of the change destination in the observation range, and returns to step B1.

  In step B6, the change instruction unit 15 determines whether or not the same defect has continuously occurred. With reference to the inspection information read from the inspection information storage unit 12 in step B2, if the defect indicated by the inspection result of the latest inspection information is the same as the defect indicated by the inspection result of the previous inspection information, the same defect continues. Therefore, the process proceeds to step B7. If the failure indicated by the inspection result of the latest inspection information is not the same as the failure indicated by the inspection result of the previous inspection information, it is determined that the same failure has not occurred continuously, and the process proceeds to step B8.

  In step B7, the change instruction unit 15 determines whether or not the number of consecutive times has reached the number of times of continuous change. That is, based on the change destination information table 53 stored in the change destination information storage unit 14, the observation device including the observation process in which the defect indicated by the inspection result of the latest inspection information has occurred is identified and specified. In the observation process included in the observation range of the observation apparatus, the number of times the same defect continues is counted with reference to the inspection information read from the inspection information storage unit 12 in step B2. It is determined based on the continuous change reference number table 51 stored in the change determination reference information storage unit 13 whether or not the counted number has reached the continuous change reference number. If the counted number has reached the continuous change reference number, the process proceeds to step B4. If the counted number has not reached the continuous change reference number, the process returns to step B1.

  In step B8, the change instruction unit 15 determines whether or not the discontinuous change reference number has been reached. That is, the number of defects generated in the inspection process indicated by the latest inspection information in the referred inspection information is counted with reference to the inspection information read from the inspection information storage unit 12 in step B2, and the number of defects counted. Is determined based on the discontinuous change reference number table 52 stored in the change determination reference information storage unit 13. If the counted number of failures is greater than or equal to the discontinuous change reference number, it is determined that the discontinuous change reference number has been reached, and the process proceeds to step B9. If the counted number of failures is less than the discontinuous change reference number, it is determined that the discontinuous change reference number has not been reached, and the process returns to step B1.

  In step B9, the change instructing unit 15 refers to the inspection information read from the inspection information storage unit 12 in step B2, and among the defective symptoms included in the inspection information table 54 stored in the inspection information storage unit 12, The number of failures is counted for each failure symptom of the inspection process indicated by the inspection information. And based on the change destination information table 53 memorize | stored in the change destination information storage part 14, the observation apparatus 20 which contains the observation process in which the defect of each defect symptom in which the frequency | count of the defect was counted generate | occur | produces is specified is specified. Further, for each identified observation device 20, the failure having the largest number of counts is identified, and the observation process in which the identified failure has occurred is determined as the observation process to be changed for each observation device 20, and the process proceeds to step B5. move on. The control steps are, for example, step B2 to step B9.

  As described above, at least one manufacturing process among the plurality of manufacturing processes for manufacturing the product to be manufactured is observed by the observation apparatus 20, and at least one inspection process for inspecting the product by the inspection information acquisition apparatus 30. Inspection information representing the inspection result is acquired, and the inspection information acquired by the inspection information acquisition device 30 is stored by the observation information storage unit 11.

  Then, the inspection result indicated by the inspection information stored in the observation information storage unit 11 by the change instruction unit 15 satisfies a predetermined determination condition for determining whether or not the manufacturing process to be observed by the observation apparatus 20 needs to be changed. Then, a manufacturing process to be newly observed is determined based on the inspection result, and the manufacturing process to be observed by the observation apparatus 20 is changed to the determined manufacturing process. Therefore, it is possible to observe only the manufacturing process in which a defect that satisfies a predetermined determination condition occurs, and the amount of observation information obtained by observing the manufacturing process can be reduced.

  Further, the inspection information includes information indicating the presence / absence of a defect and whether or not the defect is a serious defect, and the predetermined determination condition is that the latest inspection information stored by the inspection information storage unit is defective. The condition that indicates that there is a defect and that the defect is a serious defect, the latest inspection information indicates that there is a defect, and the defect is not a serious defect, but it is continuous in the same manufacturing process The condition that the defect has occurred a predetermined standard number of times or the latest inspection information indicates that there is a defect, and the defect is not a serious defect, but the same defect is not detected in the same inspection process. It is a condition that different defects are consecutively generated, or different defects are generated in a discontinuous predetermined reference number of discontinuities. Therefore, it is possible to observe only a manufacturing process in which a serious defect has occurred or a manufacturing process in which a defect is likely to occur.

  Further, the inspection information includes information indicating a symptom of a defect, and the change destination information storage unit 14 associates a symptom of a defect that occurs in each manufacturing process with each manufacturing process that can be observed by the observation device 20. Information is stored. Then, the change instruction unit 15 specifies a manufacturing process corresponding to the failure symptom indicated by the inspection information based on the correspondence information stored in the change destination information storage unit 14, and the specified manufacturing process is a new observation target. Therefore, the manufacturing process corresponding to the symptom of failure can be set as the manufacturing process to be observed.

  Further, when the manufacturing process is monitored using an observation apparatus that observes at least one of the plurality of manufacturing processes for manufacturing the article to be manufactured, step A1 of the change instruction process shown in FIG. 7 or FIG. In step B1 of the change instruction process shown in FIG. 4, inspection information representing an inspection result inspected in at least one inspection process for inspecting the product is acquired, and the acquired inspection information is stored. Then, in step A2 to step A4 of the change instruction process shown in FIG. 7 or step B2 to step B9 of the change instruction process shown in FIG. 8, it is shown in step A1 of the change instruction process shown in FIG. When the inspection result indicated by the inspection information stored in step B1 of the change instruction process satisfies a predetermined determination condition for determining whether or not the manufacturing process to be observed by the observation apparatus needs to be changed, Based on this, a manufacturing process to be newly observed is determined, and the manufacturing process to be observed by the observation apparatus is changed to the determined manufacturing process.

  Therefore, if the manufacturing process monitoring method according to the present invention is applied to a computer, observation can be made focusing on a manufacturing process in which a defect that satisfies a predetermined determination condition has occurred, and the amount of observation information obtained by observing the manufacturing process can be further increased. Can be reduced.

  The program for controlling the manufacturing process monitoring device 1 is also a program for causing a CPU included in the computer 10 to execute each step of the manufacturing process monitoring method. Therefore, the present invention can be provided as a program for causing a computer to execute each step of the manufacturing process monitoring method.

  In the above-described embodiment, the program is stored in a storage device such as a semiconductor memory or a hard disk device of the computer 10, but is not limited to these storage devices, and is a computer-readable recording. It may be recorded on a medium. The recording medium may be a recording medium that can be read by providing a program reading device as an external storage device (not shown) and inserting the recording medium therein, or may be a storage device of another device. .

  Any recording medium may be used as long as the stored program is accessed from a computer and executed. Alternatively, any recording medium may be configured such that the program is read, the read program is stored in the program storage area of the storage device, and the program is executed. Further, it may be downloaded from another device via a communication network and stored in the program storage area. The download program is stored in advance in a storage device of the computer 10 or installed in a program storage area from another recording medium.

The recording medium configured to be separable from the main body is, for example, a tape-based recording medium such as a magnetic tape / cassette tape, a magnetic disk such as a flexible disk / hard disk, or a CD-ROM (Compact Disk Read Only Memory) / MO (Magneto Optical). disk) / MD (Mini Disc) / DVD (Digital Versatile Disk) and other optical disk recording media, IC (Integrated Circuit) cards (including memory cards) / optical cards and other card recording media, or masks ROM / EPROM (Erasable Programmable Read
It may be a recording medium that carries a fixed program including a semiconductor memory such as an only memory (EEPROM) / an EEPROM (electrically erasable programmable read only memory) / flash ROM. Therefore, the present invention can be provided as a computer-readable recording medium in which a program for causing a computer to execute each step of the manufacturing process monitoring method is recorded.

It is a block diagram which shows the structure of the function of the manufacturing process monitoring apparatus 1 which is one Embodiment of this invention. It is a figure which shows an example of the serious defect defect table 50 memorize | stored in the change determination reference | standard information storage part 13. FIG. It is a figure which shows an example of the continuous change reference | standard number-of-times table 51 memorize | stored in the change determination reference | standard information storage part. It is a figure which shows an example of the discontinuous change reference | standard number-of-times table 52 memorize | stored in the change criterion information storage part. It is a figure which shows an example of the change destination information table 53 memorize | stored in the change destination information storage part. It is a figure which shows an example of the test | inspection information table 54 memorize | stored in the test | inspection information storage part 12. FIG. 4 is a schematic flowchart of change instruction processing of the computer 10. 4 is a detailed flowchart of change instruction processing of the computer 10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Manufacturing process monitoring apparatus 10 Computer 11 Observation information storage part 12 Inspection information storage part 13 Change determination reference | standard information storage part 14 Change destination information storage part 15 Change instruction | indication part 20 Observation apparatus 30 Inspection information acquisition apparatus 40 LAN

Claims (7)

Observation means for observing at least one of the plurality of manufacturing steps for manufacturing the article to be manufactured;
Inspection information acquisition means for acquiring inspection information representing an inspection result inspected in at least one inspection step for inspecting a product;
Inspection information storage means for storing inspection information acquired by the inspection information acquisition means;
When the inspection result indicated by the inspection information stored by the inspection information storage unit satisfies a predetermined determination condition for determining whether or not the manufacturing process to be observed by the observation unit needs to be changed, based on the inspection result A manufacturing process monitoring apparatus comprising: a control means for determining a manufacturing process to be newly observed and changing the manufacturing process to be observed by the observation means to the determined manufacturing process. The inspection information includes information indicating whether there is a defect and whether the defect is a serious defect,
The predetermined determination condition is:
The condition that the latest inspection information stored by the inspection information storage means indicates that there is a defect and that the defect is a serious defect;
The condition that the latest inspection information indicates that there is a defect, and the defect is not a serious defect, but is a defect that has occurred in a predetermined number of consecutive consecutive times in the same manufacturing process,
Or the latest inspection information indicates that there is a defect, and the defect is not a serious defect, but the same defect is discontinuous, different defects are consecutive, or different defects are discontinuous in the same inspection process The manufacturing process monitoring apparatus according to claim 1, wherein the condition is a condition that a predetermined reference discontinuity occurs. The inspection information includes information indicating a symptom of a defect,
For each manufacturing process observable by the observing means, further includes correspondence information storage means for storing correspondence information in which a symptom of a defect occurring in each manufacturing process is associated.
The control means identifies a manufacturing process corresponding to a failure symptom indicated by the inspection information based on the correspondence information stored by the correspondence information storage means, and determines the identified manufacturing process as a new observation target manufacturing process. The manufacturing process monitoring apparatus according to claim 1 or 2, wherein Observation information storage means for storing observation information representing observation results observed by the observation means;
4. The manufacturing process monitoring apparatus according to claim 1, further comprising output means for outputting observation information stored by the observation information storage means. A manufacturing process monitoring method for monitoring a manufacturing process using an observation device for observing at least one manufacturing process among a plurality of manufacturing processes for manufacturing a workpiece,
An inspection information acquisition step for acquiring inspection information representing an inspection result inspected in at least one inspection step for inspecting the product;
An inspection information storage step for storing the inspection information acquired in the inspection information acquisition step;
When the inspection result indicated by the inspection information stored in the inspection information storing step satisfies a predetermined determination condition for determining whether or not the manufacturing process to be observed by the observation apparatus needs to be changed, based on the inspection result The manufacturing process monitoring method characterized by including the control step which determines the manufacturing process which should be newly made into an observation object, and changes the manufacturing process made into an observation object by the observation apparatus to the determined manufacturing process. An inspection information acquisition step for acquiring inspection information representing an inspection result inspected in at least one inspection step for inspecting the product;
An inspection information storage step for storing the inspection information acquired in the inspection information acquisition step;
Whether or not the inspection result indicated by the inspection information stored in the inspection information storage step is to be changed by the observation apparatus that observes at least one of the plurality of manufacturing processes for manufacturing the article to be manufactured. When a predetermined determination condition for determining the condition is satisfied, a manufacturing process to be newly observed is determined based on the inspection result, and the manufacturing process to be observed by the observation apparatus is changed to the determined manufacturing process. A program for causing a computer to execute control steps to be changed.   A computer-readable recording medium on which the program according to claim 6 is recorded.

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