JP2007293689A - Production management system, production management method, and production management program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production management system applied to various forms of production lines and adjusting the tact of the production line, and also to provide a production management method and production management program. <P>SOLUTION: The production management system 1 for adjusting the tact of the production line LN includes: a tact measuring part 10 for measuring a work tact which indicates the tact of a work place ST; a production tact calculating part for calculating the production tact, based on the work tact; a tact adjusting part for adjusting a setting tact by comparing the setting tact with the production tact; and a display part 30 for displaying the setting tact, etc. The setting tact is thereby compared with the actual production tact, so as to be adjusted. Thus, the setting tact is re-set to a value adapted to the state of the existing production line LN. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a production management system, a production management method, and a production management program for adjusting the tact of a production line.

  Industrial products such as electrical products are manufactured on a production line configured by processes such as an assembly process and an electrical inspection process. The production line is configured so that the tact (for example, the processing time per unit quantity) of each process becomes substantially equal in order to improve production efficiency.

  For example, for processes with a large tact compared to other processes, increase the number of workers, introduce jigs to improve work efficiency, introduce automatic machines, Balance with the tact of other processes. Thereby, the variation in tact between the respective processes is suppressed, and it is possible to prevent the work from staying in some processes and the work waiting time from occurring.

  By the way, there is a production line in which a workpiece is conveyed by a belt conveyor for production. In such a production line, a workpiece is conveyed at a constant speed by a belt conveyor. An operator repeats the work which is arrange | positioned at the both sides of a belt conveyor, picks up the workpiece | work conveyed sequentially, performs a predetermined | prescribed process to a workpiece | work, and returns it to a belt conveyor. Since the work is conveyed at a constant speed, the tact of each work process is constant, and the production tact of the production line is constant. Therefore, in such a production line, the work does not stay in some processes or work waiting time does not occur, and a substantially constant production amount is ensured.

  However, if processing is delayed in some of the work processes or if work cannot be performed due to a failure of the work jig or the like, the work cannot be processed in that process, and therefore the conveyance by the belt conveyor has to be stopped. As a result, the planned workpiece may not be processed, resulting in production delay.

  Therefore, a production adjustment system has been proposed that automatically adjusts the speed of the belt conveyor to improve production efficiency so that a certain amount of production can be ensured even when conveyance by the belt conveyor stops. (Refer to patent document 1. Hereinafter, it is called a prior art.). Specifically, the production adjustment system of the prior art calculates the current tact by counting the workpieces conveyed by the belt conveyor, calculates the production delay from the current tact and the total production actual quantity, and this production The running speed of the belt conveyor is automatically adjusted based on the delay.

With this configuration, when the production line stops, the speed of the belt conveyor automatically increases, and the operator will work according to the speed of the workpiece conveyed by the belt conveyor. Is recovered.
JP 2004-30248 A

  However, the production adjustment system of the prior art can be applied to a production line that operates on a rotating belt conveyor, but has a problem that it cannot be applied to other production lines.

  For example, it is difficult to apply a conventional production adjustment system to a production line in which each process is separated and cannot be connected by a belt conveyor.

  Moreover, it is difficult to apply the production adjustment system of the prior art in a production line that produces a plurality of models simultaneously. This is because the production adjustment system of the prior art conveys a work on a belt conveyor, and therefore, when a plurality of models are conveyed at the same time, the models are mixed and management of each becomes difficult.

  Further, in the production adjustment system of the prior art, when trouble occurs in some processes, the entire production line is stopped. Therefore, in other processes, the work cannot be carried out even though the work is in progress, so that there is a problem that work time is wasted and the motivation of the worker is reduced.

  The present invention has been made in view of such a situation, and an object thereof is to provide a production management system, a production management method, and a production management program that can be applied to various forms of production lines.

  A production management system according to the present invention is a production management system that adjusts tact as a capability of processing a workpiece for a production line that processes a workpiece at a work place to produce a product, and sets a set tact of the production line. A setting tact storage unit for storing; a tact measuring unit for measuring a work tact indicating the tact of the work place; a production tact calculating unit for calculating a production tact indicating the tact of the production line based on the work tact; and the setting A tact adjustment unit that adjusts and updates the set tact by comparing the tact and the production tact, and a display unit that displays the work tact, the production tact, and the updated set tact. .

  With this configuration, the set tact is adjusted by comparison with the actual production tact, so that the set tact can be reset to a value adapted to the current production line state.

  In addition, since the work tact, production tact, and setting tact are displayed on the display unit, each worker can compare the work tact of the workplace to which he / she is involved with the production tact / setting tact. It is possible to grasp the progress status.

  In other words, while the set tact is adjusted based on the actual production tact, the operator can recognize the set tact and proceed with the work, and as a result, the production tact is adjusted and automatically optimized. Is done.

  The production management system according to the present invention further includes a tact adjustment information storage unit that stores tact adjustment information for adjusting the set tact, and the tact adjustment unit uses the tact adjustment information to determine the set tact. It is characterized by adjusting.

  With this configuration, the setting tact can be adjusted appropriately. For example, by setting an adjustment value (also referred to as a tact adjustment value) for adjusting the set tact for each product model as the tact adjustment information, the set tact can be adjusted appropriately for each product model. .

  In the production management system according to the present invention, the display unit displays an average value, a maximum value, and a minimum value of the work tact. With this configuration, it is possible to grasp variation in work tact at each work place.

  In the production management system according to the present invention, the tact adjustment unit has a function of selecting a calculation method for calculating the production tact.

  With this configuration, a calculation method for calculating the production tact can be selected, so that the set tact can be appropriately adjusted according to the state of the production line, such as when the production tact fluctuation is large or the fluctuation is small. .

  A production management method according to the present invention is a production management method for adjusting a tact as a capability of processing a workpiece for a production line that processes a workpiece at a work place to produce a product, and sets a set tact of the production line. A tact setting step for setting, a tact measurement step for measuring a work tact indicating the tact of the workplace, a production tact calculating step for calculating a production tact indicating the tact of the production line based on the work tact, and the set tact And a tact adjustment step for adjusting and updating the set tact by comparing the production tact, and a display step for displaying the work tact, the production tact and the updated set tact.

  With this configuration, since the set tact is adjusted by comparing the set tact with the actual production tact, the set tact can be reset to a value adapted to the current state of the production line.

  In other words, while adjusting the set tact based on the actual production tact, the operator can check the set tact on the display unit and proceed with the work. As a result, the production tact is adjusted automatically. Optimized.

  Further, the production management method according to the present invention includes a tact adjustment information storage step for storing tact adjustment information for adjusting the set tact, and the tact adjustment step uses the tact adjustment information to store the set tact. It is characterized by adjusting. With this configuration, the setting tact can be adjusted appropriately.

  A production management program according to the present invention is a production management program for causing a computer to adjust a tact as an ability to process a workpiece with respect to a production line that processes a workpiece at a work place to produce a product. A tact setting step for setting a set tact; a tact obtaining step for obtaining a work tact indicating the tact of the workplace; a production tact calculating step for calculating a production tact indicating the tact of the production line based on the work tact; A tact adjustment step of adjusting and updating the set tact by comparing the set tact and the production tact, and a display step of displaying the work tact, the production tact and the updated set tact. And

  With this configuration, the set tact is compared with the actual production tact and the set tact is adjusted, so that the set tact can be reset to a value adapted to the current state of the production line.

  In other words, while adjusting the set tact based on the actual production tact, the operator can check the set tact on the display unit and proceed with the work. As a result, the production tact is adjusted automatically. Optimized.

  The production management program according to the present invention further includes a tact adjustment information storing step for storing tact adjustment information for adjusting the set tact. In the tact adjustment step, the set tact is stored using the tact adjustment information. It is characterized by adjusting. With this configuration, the setting tact can be adjusted appropriately.

  According to the production management system of the present invention, the set tact is adjusted by being compared with the actual production tact, so that the set tact can be reset to a value adapted to the current state of the production line.

  In addition, since the work tact, production tact, and setting tact are displayed on the display unit, each worker can compare the work tact of the workplace to which he / she is involved with the production tact / setting tact. It is possible to grasp the progress status.

  In other words, while the set tact is adjusted based on the actual production tact, the operator can recognize the set tact and proceed with the work, and as a result, the production tact is adjusted and automatically optimized. Is done.

  In addition, according to the production management system of the present invention, the set tact can be appropriately adjusted because the set tact is adjusted using the tact adjustment information.

  Further, according to the production management system of the present invention, the display unit displays the average value, the maximum value, and the minimum value of the work tact, so that it is possible to grasp the work tact variation at each work place.

  Further, according to the production management system according to the present invention, the tact adjustment unit has a function of selecting a calculation method for calculating the production tact, so that the production line is changed when the production tact fluctuation is large or small. The setting tact can be adjusted appropriately according to the state.

  Further, according to the production management method according to the present invention, the set tact is adjusted in comparison with the set tact and the actual production tact. Therefore, the set tact can be reset to a value adapted to the current state of the production line. it can.

  In other words, while adjusting the set tact based on the actual production tact, the operator can check the set tact on the display unit and proceed with the work. As a result, the production tact is adjusted automatically. Optimized.

  Further, according to the production management program of the present invention, the set tact is adjusted by comparing the set tact with the actual production tact, so that the set tact is reset to a value adapted to the current state of the production line. be able to.

  In other words, while adjusting the set tact based on the actual production tact, the operator can check the set tact on the display unit and proceed with the work. As a result, the production tact is adjusted automatically. Optimized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
The production management system according to the present embodiment adjusts the tact of the production line. Specifically, the production management system measures the work tact (hereinafter referred to as “work tact”) in the workplace constituting the production line, calculates the production tact based on the work tact, and compares the production tact with the set tact. The setting tact is adjusted by updating the setting tact.

  The production management system according to the present embodiment is applied to a production line configured by a process having a work place for processing a workpiece. Further, the present invention is applied to various production lines regardless of the types of products produced on the production line and the configuration of the production line. For example, the present invention is applied to a production line such as a semiconductor chip production line, an electronic component production line, an electrical product assembly line, or a production line for producing a casing of an electronic device.

  The tact here means the ability to process a workpiece processed in a predetermined range (production line, process, work place, etc.). Specifically, the tact indicates the work processing time (tact time) per unit quantity, or the work processing quantity (tact quantity) processed per unit time. In this embodiment, when the term “tact” is used, tact time is indicated.

  The set tact is a tact as a target value or a management value in the production line, and is updated according to the state of the production line. Specifically, before the production line is operated, a set tact is set for each product model based on the production plan, the production processing capacity of the production line, and the like. After the production line is operated, if there is a difference between the set tact and the production tact of the actual production line, the set tact is changed and updated.

  The configuration of the production management system according to this embodiment will be described below.

  FIG. 1 is a schematic diagram showing a relationship between a production management system and a production line according to Embodiment 1 of the present invention.

  The production line LN is composed of a plurality of processes PR. The workpiece WK is processed in each process PR, and the processed workpiece WK is transferred to the next process PR. The workpiece WK is automatically conveyed by a belt conveyor or is conveyed by a carriage.

  Each process PR is provided with a work place ST. In the workplace ST, operations (processing, assembly, etc.) to be performed in the process PR are performed. In the process PR in which a plurality of workplaces ST are provided, the workpiece WK is processed in parallel at the plurality of workplaces ST.

  The number of workplaces ST constituting the process PR varies depending on each process PR. The process PR that does not take a long time to process the work WK is configured with a smaller number of work places ST than the other processes PR, and the process PR that takes a long time to process the work WK is more numerous than the other processes PR. It is comprised of the workplace ST. With such a configuration, tact balance is achieved between the processes.

  The production management system 1 according to the present embodiment is also applied to the production line LN whose operation is temporarily stopped at a predetermined time. For example, the production management system according to the present embodiment is used for a production line in which the worker M is changed every predetermined time and the operation of the line is temporarily stopped at the time of change, a production line LN in which the operation is stopped at a break, and the like. 1 applies.

  The production management system 1 calculates a tact measurement unit 10 that measures the work tact of the workplace ST, calculates a production tact based on the work tact, adjusts a set tact, and controls the entire production management system 1. The control unit 20 and a display unit 30 that displays work tact, setting tact, production tact, and the like constitute a main part. Moreover, the production management system 1 may include a model information detection unit 40 that detects model information of a product to be produced. The production management system 1 may also include a warning unit (not shown) that issues a warning when the work is delayed. Moreover, in the production line LN which conveys the workpiece | work WK using a belt conveyor, you may provide the adjustment part (not shown) which adjusts the speed of a belt conveyor.

  The tact measurement unit 10, the display unit 30, the model information detection unit 40, and the like are arranged in each work place ST. In addition, the tact measurement unit 10, the display unit 30, and the model information detection unit 40 arranged in each work place ST are connected to and controlled by the control unit 20.

  The production management system 1 is not limited to the configuration shown in FIG. 1, that is, the configuration in which all the tact measurement units 10 are controlled by one control unit 20. For example, the production management system has a configuration in which a control unit 20 to which a tact measurement unit 10 and a display unit 30 are connected is arranged in each workplace ST, and each control unit 20 is connected by a communication cable to exchange tact information and the like. 1 may be constructed.

  FIG. 2 is a block diagram of the tact measurement unit of the production management system according to Embodiment 1 of the present invention.

  The tact measurement unit 10 measures a work tact of a work place ST (see FIG. 1) constituting each process PR. The measurement of the work tact is repeated at a predetermined time. For example, while the production line LN (see FIG. 1) is continuously operating, the tact measurement unit 10 repeatedly measures the work tact, and when the production line LN stops, the work tact measurement is stopped. .

  The tact measurement unit 10 includes a detector 10S that detects the workpiece WK, a count unit 10C that counts a signal output when the detector 10S detects the workpiece WK, and a maximum number of counts counted by the count unit 10C. A count number setting unit 10T that sets a value and a tact measurement unit 10M that measures the time until the count number set by the count number setting unit 10T is reached.

  The detector 10S is provided corresponding to the workplace ST arranged in each process PR, and detects the workpiece WK processed in each workplace ST. For example, the detector 10S is configured by a proximity type optical sensor. An optical sensor is arranged at a position to move the workpiece WK processed by the worker M, and the processed workpiece WK is detected. Moreover, in the production line LN which conveys the processed workpiece | work WK with a belt conveyor, a sensor is arrange | positioned at the edge part of a belt conveyor and a sensor detects the passage of the processed workpiece | work WK. With such a configuration, the processed workpiece WK is reliably detected.

  The detector 10S may be configured by a mechanical switch such as a micro switch. Specifically, the microswitch is arranged such that the switch is turned on when the work WK is placed on the work place ST, and the switch is turned off when the work WK is away from the work place ST. Thereby, the presence or absence of the workpiece WK is detected. Even with such a configuration, the processed workpiece WK is reliably detected.

  The detector 10S is not limited to an optical sensor or a microswitch, and may be any one that can detect the workpiece WK.

  The count unit 10C counts an output signal output from the detector 10S when the processed workpiece WK is detected. Further, the count unit 10C is provided corresponding to each detector 10S. Thereby, the number of workpieces WK processed in each work place ST (also referred to as a count number) is counted.

  The count number setting unit 10T sets a maximum value (also referred to as a target measurement number) of the count number, and outputs an output signal when the count number reaches the target measurement number. A count number setting unit 10T is provided corresponding to each detector 10S.

  The tact measurement unit 10M measures the time from the start of measurement (count number is 0) to the target measurement count, and is provided corresponding to each detector 10S. With this configuration, the time required to reach the target measurement count (that is, work tact) is measured at each work place ST.

  It is preferable that the target measurement count can be changed. The measurement accuracy of the work tact improves as the target measurement count increases, but the time until the work tact is measured becomes longer, so the target measurement count is preferably set appropriately depending on the production status, product model, etc. Because.

  With the above configuration, the tact measurement unit 10 detects the processed workpiece WK with the detector 10S, counts the number of times the workpiece WK is detected until the target measurement count is reached with the count unit 10C, and the tact measurement unit 10T with the target. It is possible to measure the time (tact) until the number of measurements.

  When the measurement of the work tact is completed, when the production line LN is stopped, or when the measurement of the work tact is started, the count number of the count unit 10C is reset. When the count number is reset, the measurement of the work tact is completed. Therefore, the state in which the measurement of the work tact in the following description is reset means a state in which the count number is reset.

  The control unit 20 adjusts the set tact based on the work tact measured by the tact measurement unit 10 and controls the production management system 1.

  FIG. 3 is a block diagram showing the configuration of the production management system according to Embodiment 1 of the present invention.

  The control unit 20 compares the tact storage unit 20A that stores the work tact measured by the tact measurement unit 10, the set tact storage unit 20B that stores the set tact of the production line LN, and the work tact of each workplace ST. A production tact calculation unit 21 that calculates a tact (refer to the description below), a production tact, and the like, a production tact storage unit 20C that stores the calculated comparison tact, a production tact, and the like, and compares and sets the production tact and the set tact. The tact adjustment unit 22 adjusts the tact and adjusts a new set tact.

  In addition, the control unit 20 may include a measurement condition storage unit 20E that stores measurement conditions for measuring tact, a tact adjustment information storage unit 20D that stores tact adjustment information for adjusting set tact, and the like. . Furthermore, the control unit 20 may include a measurement condition setting unit 23 that sets measurement conditions.

  The tact storage unit 20A, the production tact storage unit 20C, the measurement condition storage unit 20E, and the tact adjustment information storage unit 20D are not limited to the configuration provided in the control unit 20, but are provided in other components. It may be. Specifically, the tact storage unit 20A may be provided in the tact measurement unit 10, the production tact storage unit 20C may be provided in the production tact calculation unit 21, and the tact adjustment information storage unit 20D may be provided in the tact adjustment unit 22. You may provide in an apparatus (not shown).

  The tact storage unit 20 </ b> A stores the work tact measured by the tact measurement unit 10. Since the tact measurement unit 10 repeatedly measures the work tact within a predetermined period, all the measured work tacts are stored in the tact storage unit 20A. Further, the work tact is classified and stored for each work place ST. Further, in the production line LN (see FIG. 1) of a shift system (a system that operates a production line by changing workers), the work tact is divided and stored for each shift (every shift).

  For example, when a work tact is measured in an operating time zone (shift) in a shift production line LN, each time the work tact is measured, the work tact is divided for each work place ST, and the tact storage unit is used as data of the shift. 20A. Note that the work tact of the previous operating time zone (shift one before) is compared with the work tact related to the measurement until the measurement of the work tact is completed (that is, the measurement of the work tact is reset). The stored state is maintained.

  The set tact storage unit 20B stores the set tact for the production line LN. An initial value of the setting tact (also referred to as an initial setting tact) is determined based on information such as a production plan, and is input by an external input device (such as a keyboard). The initial setting tact is stored in the initial setting tact storage unit 20Ba provided in the setting tact storage unit 20B.

  The set tact is updated each time a new set tact is calculated (adjusted) by the tact adjusting unit 22. Note that the initial setting tact is maintained while being stored in the initial setting tact storage unit 20Ba.

  The production tact calculation unit 21 calculates the average value, minimum value and maximum value of the work tact, the comparison tact, the production tact, and the like based on the measured work tact (hereinafter, the average value of the work tact, the minimum value) Calculation of value and maximum value, comparison tact, and production tact is called tact calculation.) The tact calculation is performed when the work tact is measured. If there is a variation in the measurement time of the work tact in each work place ST, the tact calculation is performed when the measurement of all the work tacts is completed.

  The average value, minimum value, and maximum value of the work tact are calculated for each work place ST based on the work tact data stored in the tact storage unit 20A. For example, in the shift production line LN, the average value, the minimum value, and the maximum value of the work tact are obtained for each work place within the operation time period (shift).

  The comparison tact is calculated for each workplace ST included in the process PR. The comparison tact here is defined as a value obtained by dividing the average value of the work tact for the work place ST by the number of work places ST constituting the process PR. Specifically, in a process in which the work tact takes about twice as much as the production tact, the process PR is composed of two work places. The comparison tact of each work place in the process PR is calculated by dividing the average value of the work tacts of each work place by two. By such calculation, the comparison tact calculated for each work place ST can be set to a value that can be compared with the production tact of the production line LN.

  In addition, you may calculate the process tact which shows the tact of process PR. The process tact is calculated as an average value of the comparison tact for the workplace ST of each process PR.

  The production tact is calculated based on the comparison tact. Specifically, the production tact is calculated as an average value of the comparison tact. Alternatively, the production tact is calculated as the maximum value or the minimum value of the comparison tact. Which calculation method (production tact calculation method) is used to calculate the production tact is selectable. As a result, the production tact is calculated by an appropriate calculation method according to the configuration of the production line LN, the production status, the product model, etc., so that the set tact is adjusted appropriately.

  For example, when there is no variation in the work tact at each workplace ST, it is appropriate to use the average value of the comparison tact as the production tact indicating the overall state of the production line LN. It is preferable to employ the “average of tact”. On the other hand, when one work place ST among all the work places ST has a larger work tact than the other work places ST, the work place ST determines the production tact of the production line LN. Since it is appropriate to set the maximum value of the comparison tact, it is preferable to adopt “maximum of comparison tact” as the production tact calculation method.

The tact adjusting unit 22 compares the production tact and the set tact, adjusts a new set tact as a value to be updated, and updates the set tact. Specifically, when there is a difference between the set tact and the production tact, the set tact is brought close to the production tact and set as a new set tact. For example, when the production tact is smaller than the set tact (when [Equation 1] is satisfied), a value obtained by subtracting an adjustment value (hereinafter referred to as a tact adjustment value) from the set tact is set as a new set tact.
[Formula 1] Production tact <Setting tact

  The tact adjustment information may be used when the tact adjustment unit 22 adjusts a new set tact. For example, as tact adjustment information, a tact adjustment value for adjusting the set tact, and a margin value used when comparing the set tact and the production tact (hereinafter referred to as a comparison margin value. The comparison margin value will be described below). Etc. are used. The tact adjustment information is set for each product type or production line type, and stored in a tact adjustment information storage unit 20D provided in the control unit 20. The types of production lines here are classified according to the work contents of the process PR, the number of processes PR, the structure of the process PR, and the like.

  The tact adjustment value is a value used when adjusting a new set tact when adjusting the set tact. The tact adjustment value is set in accordance with the production tact level. For example, when the production tact is set between 1% and 10%, if the production tact is about 60 seconds, the tact adjustment value is set between 0.6 and 6 seconds, and the production tact is 600 seconds. If so, the tact adjustment value is set between 6 and 60 seconds.

The comparison margin value is a margin given to the set tact in comparison between the set tact and the production tact. In the tact adjustment using the comparison margin value, a value obtained by subtracting the comparison margin value from the set tact (also referred to as a comparison value) is compared with the production tact (see [Formula 2]). For example, when the production tact is smaller than the comparison value, a value obtained by subtracting the tact adjustment value from the set tact is set as a new set tact. When the production tact is equal to or greater than the comparison value, the set tact is maintained.
[Formula 2] Production tact <(Set tact-Comparison margin value)

  By providing a margin (subtracting the comparison margin value from the set tact) in this way, the reference when the production tact is changed can be increased, so that the set tact is hardly changed. As a result, the set tact can be stabilized.

  It should be noted that since the work tact of the production line differs if the work contents of the process PR differ, it is preferable to set a tact adjustment value and a comparison margin value depending on the type of the production line. Similarly, since the work tact may vary greatly depending on the product model, it is preferable to set the tact adjustment value and the comparison margin value depending on the product model.

  By using such tact adjustment information, the set tact can be adjusted appropriately according to the production line LN and the product model.

  The control unit 20 may also include a setting change function that can change settings such as the target measurement count, tact adjustment value, comparison margin value, reset timing (time at which work tact measurement is reset), and production tact calculation method. Good. According to the setting change function, it is possible to easily change values such as the target measurement count once set. As a result, the number of target measurements, the tact adjustment value, the comparison margin value, the reset timing, the production tact calculation method, and the like can be changed as appropriate in response to a change in the configuration of the production line LN.

  The control unit 20 may include a model-specific tact setting function capable of setting an initial setting tact and an upper limit value and a lower limit value of the setting tact for each product model. Here, the upper limit value of the setting tact is an upper limit value that can be taken by the setting tact adjusted by the tact adjusting unit. The lower limit value of the set tact is a lower limit value that can be taken by the set tact adjusted by the tact adjusting unit.

  As a result, since the upper and lower limit values of the set tact are regulated, even if the set tact exceeds the upper limit or lower limit value by calculation, the set value is the upper limit value or lower limit value. An abnormal value is not set as the setting tact. In other words, in the actual production line, the work tact may fluctuate significantly when troubles occur in the workplace. If the upper and lower limits are not set in the set tact, an abnormal set tact will be set. However, such a situation can be avoided by setting the upper limit value and the lower limit value of the set tact.

  The display unit 30 displays an initial setting tact, a work tact (average value, maximum and minimum values) of each work place ST, and a setting tact. Further, in the production line LN of the shift system, the work tact of the previous shift (operation time zone) may be displayed.

  FIG. 4 is a representative view of a display screen that displays work tact, production tact, and the like in the production management system according to Embodiment 1 of the present invention.

  The display screen 30S includes a display screen upper stage 30Su indicating a product model being produced, a display screen interruption 30Sc indicating a work state, and a display screen lower stage 30Sd indicating a production state in a graph.

  On the display screen upper stage 30Su, a production line name (production line type), a product model name, an initial setting tact, a setting tact, and a production tact are displayed. Thereby, the worker can confirm the current model manufactured on the production line, the newly set tact, and the like.

  In the left column (column indicating “No, process, work place, operation”) in the middle stage 30Sc of the display screen, the operation state is displayed for each work place. Specifically, in the left column in the middle of the screen, a workplace category is provided for each process, and the operating status of each workplace is indicated. Here, a circle indicates that work is being performed in the workplace (that it is in operation).

  The measured work tact (average value, maximum and minimum value) and comparison tact are displayed in the middle column (column indicating “current work tact”) in the middle stage 30Sc of the display screen. Since the work tact is displayed for each work place, the worker can grasp the work state (work variation, etc.) of the work place with which the work is related. In addition, since the comparison tact is displayed for each work place, it is easy to compare with the production tact and the set tact.

  In the right column (column indicating “work tact before one shift”) in the middle stage 30Sc of the display screen, the comparison tact and work tact before one shift are displayed. Since the work tact before one shift is shown, the worker can compare the work state of the work place to which he is related with the work state of the work place before one shift. Also, on-hand time (total time spent waiting time for each work place), tact over (total value that exceeds the set tact time for each work place), over times (total value that exceeds the set tact time for each work place) Is displayed.

  In the lower stage 30Sd of the display screen, changes over time of the initial setting tact, setting tact, and production tact are displayed as a graph. The vertical axis represents tact, and the horizontal axis represents the number of measurements. Since the default tact is not adjusted, the graph does not change over time. Since the production tact is calculated from the measured work tact, the graph is a line. Since the set tact is adjusted by the tact adjusting unit, the graph draws a curve that converges to a predetermined value. FIG. 4 shows a state in which an approximate line (a broken line in FIG. 4) of the graph showing the production tact and a curve (a dashed line in FIG. 4) showing the set tact gradually approach so as to converge to a predetermined value. Has been. That is, the difference between the production tact and the set tact is gradually reduced at the start of measurement. Since the operator can confirm the change over time of the production tact of the production line from this graph, the operator can grasp the overall state of the production line. This facilitates communication between the workers.

  The type and product type of the production line are changed by a predetermined operation. In the display screen of FIG. 4, a list of production lines is displayed by pressing the right end button 31 of a part where a production line name is displayed, and a production line can be selected by selecting one. . Similarly, the product model can be changed by pressing the right end button 32 in the part where the product model name is displayed. By changing the type and product model of the production line, the production status of the product model in the selected production line is displayed.

  In addition, a setting change button 33 for activating the setting change function is arranged in the upper right part of the display screen. A model-specific tact setting button 34 for activating the model-specific tact setting function is disposed below the setting change button 33. A tact reset button 35 is arranged below the model-specific tact change button. Pressing this button resets the work tact measurement. For example, the tact reset button 35 is pressed when a failure of a production machine or the like occurs in the production line and the tact is not accurately measured.

  FIG. 5 is a representative diagram of a setting change screen for changing settings in the production management system according to Embodiment 1 of the present invention.

  The setting change screen is displayed by pressing the setting change button 33 on the display screen 30S (see FIG. 4). On the setting change screen, it is possible to set the target measurement count as the measurement condition, set the tact adjustment value and the comparison margin value as the tact adjustment information, select the reset timing time, and select the production tact calculation method. Since the production management system 1 can be set via the setting screen, measurement conditions, tact adjustment information, reset timing, production tact calculation method, and the like can be easily set.

  FIG. 6 is a representative diagram of a model-specific tact setting screen for setting a setting tact for each product model in the production management system according to Embodiment 1 of the present invention.

  The model-specific tact setting screen is displayed by pressing the model-specific tact setting button 34 on the display screen 30S (see FIG. 4). In the model-specific tact setting screen, an initial setting tact can be set for each product model. Moreover, the upper limit value and lower limit value of the set tact to be calculated can be determined for each product model.

  Next, a model information detection unit 40 (see FIG. 1) provided as necessary in the production management system 1, a warning unit (not shown) that issues a warning to workers, etc., and an adjustment unit (not shown) that adjusts the speed of the belt conveyor. Will be described.

  The model information detection unit 40 (see FIG. 1) is for determining the product model and is arranged in each work place. Specifically, the model information detection unit 40 reads the product information attached to the workpiece and the product information attached to the pallet that transports the workpiece, and information about the product model stored in advance (product model information) ) To determine the product model corresponding to the workpiece. According to the model information detection unit 40, since the product model of the workpiece is automatically determined, only the workpiece to be reliably measured can be detected by the detection unit.

  Further, the model information detection unit 40 may be provided with a function of outputting a predetermined signal to the control unit when an unscheduled work is detected. Thereby, since the signal from the model information detection unit 40 is processed by the control unit 20 and the mixing of the work can be displayed on the display unit 30, the operator can be alerted.

  The warning unit (not shown) issues a warning for alerting an operator, an administrator, or the like based on a predetermined determination. Specifically, when the work tact becomes larger than the allowable range with respect to the set tact, a warning sound is emitted to the work place, a warning lamp is turned on, or a warning is displayed on the display unit 30. To do. This makes it possible for the worker to recognize that there is a delay in the work.

  The adjusting unit adjusts the speed of the belt conveyor based on the set tact. For example, in the case where the production management system 1 is applied to the production line LN that transports the workpiece WK using a belt conveyor, it is equipped to adjust the speed of the belt conveyor.

  Specifically, the adjustment unit determines whether the production tact is delayed with respect to the set tact, and the determination information of the determination unit and the production plan information (such as the product quantity planned for the production line). Information) and a speed setting unit that determines the speed of the belt conveyor, and a speed adjusting device that adjusts the speed of the belt conveyor to the speed set by the speed setting unit. Thereby, even if production is delayed, the speed of the belt conveyor can be adjusted as appropriate to adjust the production tact.

  Next, a flow until the setting tact is set by the production management system 1 according to the present embodiment will be described based on FIG. 1 to FIG. 3, FIG. 7 and FIG.

  FIG. 7 is a flowchart explaining adjustment of the setting tact in the production management system according to Embodiment 1 of the present invention.

  First, setting tact is set corresponding to the product model to be produced on the production line (tact setting step: S1-10). The setting tact set at the start of measurement is stored (saved) in the initial setting tact storage unit 20Ba as an initial setting tact.

  Measurement of work tact is started when production is started in the production line. The measurement of the work tact may be started automatically at a predetermined time, or may be started by an operation of an operator or an administrator.

  Next, the measurement of the working tact is performed by the tact measuring unit 10 (tact measuring step: S1-11). Specifically, the workpiece is detected by the detector 10S, the number of detected workpieces is counted by the counting unit 10C, and the time (tact time, that is, work tact) until the target measurement count is reached is measured. The work tact is measured for each work place in each process.

  Next, a work tact is acquired (tact saving step: S1-12). Specifically, the work tact measured by the tact measurement unit 10 is classified for each work place and stored (saved) in the tact storage unit 20A. The work tact is divided into time zones (shifts) and stored (saved) in the tact storage unit 20A. Therefore, in the tact storage unit 20A, work tact data from the start of measurement of work tact until a predetermined time is divided and stored for each work place and time zone.

  Next, a comparison tact is calculated at each work place (comparative tact calculation step: S1-13). Specifically, a comparison tact is obtained by dividing the average value of the work tact corresponding to each work place by the number of work places. The average value of the work tact is calculated based on the work tact data measured up to a predetermined time (time for calculating the comparison tact) in a predetermined time zone. Note that when calculating the average value of the work tact, the minimum value and the maximum value of the work tact may be calculated.

  Next, it is determined whether or not the calculation of the comparison tact has been completed for all the workplaces (calculation end determination step: S1-14). When the calculation of the comparison tact has not been completed in some workshops (S1-14: NO), the comparison tact for the workshop is calculated after a predetermined time has elapsed.

  Next, when the calculation of the comparison tact is completed (S1-14: YES), the production tact calculation unit 21 calculates the production tact based on the comparison tact (production tact calculation step: S1-15). Specifically, the production tact is calculated based on the comparison tact of each workplace by the selected production tact calculation method. For example, when “average value of comparison tact” is selected as the production tact calculation method, the average value of comparison tact for each workplace is calculated, and this average value is used as the production tact.

  Next, the production tact is compared with the set tact, and the set tact is adjusted by the tact adjustment unit 22 (tact adjustment step: S1-16). Specifically, the production tact and the set tact are compared by a predetermined comparison method. If a predetermined condition is satisfied, the set tact is changed, and if the predetermined condition is not satisfied, the set tact is maintained. For example, the set tact is adjusted depending on whether the production tact satisfies the above formula 1 or 2. The adjustment of the setting tact will be described later.

  Next, the work tact, comparison tact, and setting tact are displayed on the display unit 30 (display step: S1-17). Thereby, the worker can grasp the state of the work place.

  Next, it is confirmed whether or not the measurement of the work tact is reset (reset confirmation step: S1-18). When the measurement of the work tact is reset, the flow ends (S1-18: YES).

  When the measurement of the work tact is not reset, the measurement of the work tact is started again (S1-18: NO). The second and subsequent measurements (S1-11) are performed in the same manner as the first measurement, and a tact is acquired (S1-12), and a comparison tact is calculated from the acquired work tact (S1-13).

  Next, it is determined whether the calculation of the comparison tact is completed for all the workplaces (S1-14), the production tact is calculated (S1-15), the set tact is calculated (adjusted) (S1-16), and the work tact is calculated. The comparison tact and the setting tact are displayed on the display unit 30 (S1-17).

  Next, adjustment of the setting tact will be described.

  FIG. 8 is a flowchart explaining the adjustment of the setting tact in the production management system according to Embodiment 1 of the present invention.

  The set tact adjustment (tact adjustment step: S1-16) is performed after the production tact calculation (production tact calculation step: S1-15).

  First, a set tact is acquired (S1-21), and a production tact is acquired (S1-22). Further, the tact adjustment value and the comparison margin value stored in the tact adjustment information storage unit 20D are acquired (S1-23). Since the tact adjustment value and the comparison margin value vary depending on the product model, the tact adjustment value and the comparison margin value are obtained by referring to the product model produced on the production line.

  Next, a value obtained by subtracting the comparison margin value from the set tact (comparison value) is compared with the production tact, and it is determined whether the production tact is lower than the comparison value (S1-24).

  When the production tact is lower than the comparison value (S1-24: YES), a value obtained by subtracting the tact adjustment value from the set tact is set as a new set tact, and the set tact is updated (S1-25). If the production tact is not lower than the comparison value (S1-24: NO), the set tact is maintained unchanged. By such a method, the setting tact is appropriately adjusted for each product model.

  According to the production management system 1 according to the present embodiment, the set tact is compared with the production tact and adjusted, so that the set tact can be a value corresponding to the current state of the production line.

  In addition, since the work tact, production tact, and setting tact are displayed on the display unit 30, each worker can compare the work tact of the workplace ST to which he is related with the production tact LN and the setting tact. It is possible to grasp the progress status of the work.

  In other words, while the set tact is adjusted based on the actual production tact, the operator can recognize the set tact and proceed with the work, and as a result, the production tact is adjusted and automatically optimized. Is done.

  The production management system 1 according to the present invention is not limited to the one configured based on the tact time, and may be configured based on the tact quantity. When the production management system 1 is configured based on the tact quantity, the tact measurement unit is configured to count the workpieces processed in a predetermined time. This production management system also has the same effect as the production management system 1 described above.

<Embodiment 2>
The production management method according to the present embodiment is a method for adjusting tact for a production line.

  Specifically, in the production management method, the work tact of the workplace that constitutes the production line is measured, the production tact is calculated based on the work tact, and the new set tact is adjusted by comparing the production tact with the set tact. And update the setting tact. Thereby, since the production tact is calculated according to the production situation and the set tact is adjusted based on the production tact, the production tact can be adjusted according to the production situation of the production line.

  In addition, the production management method according to the present embodiment is applied to a production line configured by a process having a work place for processing workpieces, and is applied to the types of products produced on the production line and the configuration of the production line. Regardless of application to various production lines. The definition of tact is the same as that shown in the first embodiment.

  The production management method according to the present embodiment can be realized using the production management system 1 according to the first embodiment. Note that the production management method according to the present embodiment is not limited to being realized by the production management system 1 according to the first embodiment. That is, the production management method according to the present embodiment can be applied to the production line regardless of the system and the apparatus.

  The production management method according to this embodiment will be described below.

  FIG. 9 is a flowchart of the production management method according to Embodiment 2 of the present invention.

  First, a setting tact is set corresponding to the product model produced on the production line (tact setting step: S2-10).

  Next, work tact measurement is performed (tact measurement step: S2-11). Specifically, the workpiece processed in the work place is detected, the number of detected workpieces is counted, and the time (tact) until the number of workpieces reaches a predetermined value (target measurement count) is measured. The work tact is measured for each work place in each process. In the measurement of the working tact, the detector 10S described in the first embodiment may be used.

  Next, the measured work tact is stored (saved) in a storage device or the like (tact saving step: S2-12). Specifically, the measured work tact is divided for each work place, and is also divided into time zones (shifts) and stored (saved) in a storage device. Therefore, work tact data from the start of work tact measurement until a predetermined time is accumulated and stored in the storage device for each work place and time zone.

  Next, a comparative tact is calculated for each workplace (comparative tact calculating step: S2-13). Specifically, the average value of the work tact corresponding to each work place is divided by the number of work places to obtain a comparison tact. The average value of the work tact is calculated based on the work tact data measured up to a predetermined time (time for calculating the comparison tact) in a predetermined time zone.

  Next, it is determined whether the calculation of the comparison tact has been completed for all the workplaces (calculation completion determination step: S2-14). When the calculation of the comparison tact has not been completed in some workshops (S2-14: NO), the comparison tact for the workshop is calculated after a predetermined time has elapsed.

  Next, when the calculation of the comparison tact is completed (S2-14: YES), the production tact is calculated based on the comparison tact (production tact calculation step: S2-15). Specifically, one of a plurality of production tact calculation methods prepared in advance is selected, and the production tact is calculated by the selected production tact calculation method. For example, “average value of comparison tact”, “maximum value of comparison tact”, and “minimum value of comparison tact” can be selected as the production tact calculation method. When “average value of comparison tact” is selected, an average value of comparison tacts at each workplace is calculated, and this average value is set as a production tact. Since the production tact calculation method can be selected, the set tact can be adjusted appropriately according to the configuration of the production line, the production status, the product model, and the like.

  Next, the production tact is compared with the set tact, and a new set tact is adjusted as a value to be set (tact adjustment step: S2-16).

  Specifically, a value obtained by subtracting a predetermined value (comparison margin value) from the set tact (comparison value) is compared with the production tact to determine whether the production tact is lower than the comparison value (S2-16a). For example, the determination is made based on whether or not Expression 1 or Expression 2 shown in Embodiment 1 is satisfied. The comparison margin value is the same as that defined in the first embodiment.

  When the production tact is lower than the comparison value (S2-16a: YES), a value obtained by subtracting a predetermined value (tact adjustment value) from the set tact is set as a new set tact, and the set tact is updated (S2-16b). The tact adjustment value is the same as that defined in the first embodiment. Thereby, it is possible to adjust the setting tact in conformity with the production line and the product model.

  When the production tact is not lower than the comparison value (S2-16a: NO), the set tact is maintained without being changed.

  Next, the set tact is stored (saved), and the work tact, the comparison tact, and the set tact are displayed on the display unit 30 for each work place (display step: S2-17). Thereby, the worker can grasp the state of the work place.

  Next, it is confirmed whether or not the measurement of the work tact is reset (reset confirmation step: S2-18). When the measurement of the work tact is reset, the flow ends (S2-18: YES).

  When the measurement of the work tact is not reset, the work tact is measured (S2-18: NO). The second and subsequent measurements (S2-11) are performed in the same manner as the first measurement. First, a work tact is acquired (S2-12), and a comparison tact is calculated based on the acquired work tact (S2-13). Next, it is determined whether the comparison tact calculation has been completed for all the workplaces (S2-14), the production tact is calculated (S2-15), the set tact is adjusted (S2-16), and the average value of the work tact is determined. The maximum value and the minimum value, the production tact and the set tact are displayed on the display unit 30 (S2-17).

  According to the production management method according to the present embodiment, the set tact is adjusted in comparison with the production tact, so that the set tact can be set to a value corresponding to the current state of the production line.

  Further, since the work tact, the production tact, and the setting tact display the display unit 30, each worker can compare the work tact of the work place to which he is related with the production tact and the setting tact. In addition, it is possible to grasp the progress of its own work.

  In other words, while adjusting the set tact based on the actual production tact, the operator can check the set tact on the display unit and proceed with the work. As a result, the production tact is adjusted automatically. Optimized.

<Embodiment 3>
The production management program in the present embodiment is a program that is incorporated in a calculation system that performs a predetermined calculation based on the detection of a workpiece and adjusts the tact for the production line.

  Specifically, the production management program calculates the production tact based on the work tact measured at each workplace, adjusts the new set tact by comparing the production tact and the set tact, and updates the set tact. . Thereby, since the production tact is calculated according to the production situation and the set tact is adjusted based on the production tact, the production tact can be adjusted according to the production situation of the production line.

  The production management program according to the present embodiment is applied to a production line configured by a process having a work place for processing a workpiece. It applies to various production lines regardless of the configuration. The definition of tact is the same as that shown in the first embodiment.

  The production management program according to the present embodiment is stored and executed in the production management system 1 according to the first embodiment. Note that the application of the production management program according to the present embodiment is not limited to the production management system 1 according to the first embodiment. In other words, the calculation system to which the production management program is applied is only required to be able to input the detection data obtained by detecting the workpiece, and to calculate based on the detection data and to output the calculation result. .

  The production management program according to this embodiment will be described below.

  FIG. 10 is a flowchart of the production management program according to Embodiment 3 of the present invention.

  First, a set tact is set corresponding to the product model produced on the production line (tact setting step: S3-10). Specifically, a calculation system to which the production management program according to the present embodiment is applied is activated, and a setting tact corresponding to the product model is input.

  Next, a work tact measured by the detector 10S or the like is acquired (tact acquisition step: S3-12). Specifically, work tact data measured for each work place in each process is input to a calculation system using an input device or the like, and is divided into work places and time zones (shifts) and stored in a storage unit (memory) or the like. .

  Next, a comparative tact is calculated for each workplace (comparative tact calculating step: S3-13). Specifically, a comparison tact is obtained by dividing the average value of the work tact corresponding to each work place by the number of work places. The average value of the work tact is calculated based on the work tact data input up to a predetermined time (time for calculating the comparison tact) in the predetermined time zone.

  Next, it is determined whether or not the calculation of the comparison tact has been completed for all workplaces (calculation completion determination step: S3-14). When the calculation of the comparison tact is not completed due to reasons such as the fact that the work tact of some workshops has not been acquired (S3-14: NO), the comparison tact for the workshop is calculated after a predetermined time has elapsed.

  Next, when the calculation of the comparison tact is completed (S3-14: YES), the production tact is calculated based on the comparison tact (production tact calculation step: S3-15). Specifically, one of a plurality of production tact calculation methods prepared in advance is selected, and the production tact is calculated by the selected production tact calculation method. Since the production tact calculation method can be selected, the set tact can be adjusted appropriately according to the configuration of the production line, the production status, the product model, and the like.

  Next, the production tact and the set tact are compared, and a new set tact is adjusted as a value to be set (tact adjustment step: S3-16).

  Specifically, a value obtained by subtracting a predetermined value (comparison margin value) from the set tact (comparison value) is compared with the production tact to determine whether the production tact is lower than the comparison value (S3-16a). For example, the determination is made based on whether or not Expression 1 or Expression 2 shown in Embodiment 1 is satisfied. The comparison margin value is the same as that defined in the first embodiment.

  When the production tact is lower than the comparison value (S3-16a: YES), a value obtained by subtracting a predetermined value (tact adjustment value) from the set tact is set as a new set tact, and the set tact is updated (S3-16b). The tact adjustment value is the same as that defined in the first embodiment. Thereby, the set tact can be adjusted with the tact adjustment value suitable for the production line and the product model.

  When the production tact is not lower than the comparison value (S3-16a: NO), the set tact is maintained without being changed.

  Next, the set tact is stored, and the work tact, comparison tact, and set tact are output to the display unit 30 and the like for each work place (display step: S3-17). Thereby, the worker can grasp the state of the work place.

  Next, it is confirmed whether or not the measurement of the work tact is in a reset state (reset confirmation step: S3-18). When the measurement of the work tact is reset, the flow ends (S3-18: YES).

  When the measurement of the work tact is not reset, the work tact is acquired (S3-18: NO). The second and subsequent work tacts are acquired (S3-12) as well as the first measurement. First, a comparison tact is calculated based on the acquired work tact (S3-13). Next, it is determined whether the comparison tact calculation has been completed for all the workplaces ST (S3-14), the production tact is calculated (S3-15), the set tact is adjusted (S3-16), and the average of the work tact is determined. The value, maximum value and minimum value, production tact, and set tact are output to the display unit 30 (S3-17).

  According to the production management program according to the present embodiment, the set tact is adjusted in comparison with the production tact, so that the set tact can be a value corresponding to the current state of the production line.

  In addition, since the work tact, the production tact, and the setting tact are displayed on the display unit 30, each worker can compare the work tact of the workplace with which the worker is involved with the production tact and the setting tact. In addition, it is possible to grasp the progress of its own work.

  In other words, while adjusting the set tact based on the actual production tact, the operator can check the set tact on the display unit and proceed with the work. As a result, the production tact is adjusted automatically. Optimized.

It is the schematic which showed the relationship between the production management system which concerns on Embodiment 1 of this invention, and a production line. It is a block diagram of the tact measurement part of the production management system concerning Embodiment 1 of the present invention. It is the block diagram which showed the structure of the production management system which concerns on Embodiment 1 of this invention. In the production management system concerning Embodiment 1 of the present invention, it is a typical figure of a display screen which displays work tact, production tact, etc. It is a typical figure of the setting change screen which performs a setting change in the production management system which concerns on Embodiment 1 of this invention. It is a typical figure of the model tact setting screen which sets a setting tact for every product model in the production management system concerning Embodiment 1 of the present invention. It is a flowchart figure explaining adjustment of a setting tact in the production management system concerning Embodiment 1 of the present invention. It is a flowchart figure explaining adjustment of a setting tact in the production management system concerning Embodiment 1 of the present invention. It is a flowchart figure of the production management method which concerns on Embodiment 2 of this invention. It is a flowchart figure of the production management program which concerns on Embodiment 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Production management system 10 Tact measurement part 20 Control part 20A Tact storage part 20B Setting tact storage part 20C Production tact storage part 21 Production tact calculation part 22 Tact adjustment part 23 Measurement condition setting part 30 Display part 40 Model information detection part LN Production line PR process ST workshop WK work

Claims (8)

A production management system for adjusting a tact as a capability of processing a workpiece for a production line for processing a workpiece at a work place to produce a product,
A setting tact storage unit for storing the setting tact of the production line;
A tact measurement unit for measuring a work tact indicating a tact of the work place;
A production tact calculation unit for calculating a production tact indicating a tact of the production line based on the work tact;
A tact adjustment unit that adjusts and updates the set tact by comparing the set tact and the production tact;
A production management system comprising: a display unit configured to display the work tact, the production tact, and the updated setting tact. A tact adjustment information storage unit for storing tact adjustment information for adjusting the set tact;
The production management system according to claim 1, wherein the tact adjustment unit adjusts the set tact using the tact adjustment information.   The production management system according to claim 1, wherein the display unit displays an average value, a maximum value, and a minimum value of the work tact.   The production control system according to any one of claims 1 to 3, wherein the tact adjustment unit has a function of selecting a calculation method for calculating the production tact. A production management method for adjusting a tact as an ability to process a workpiece for a production line that processes a workpiece at a work place to produce a product,
A tact setting step for setting a set tact for the production line;
A tact measurement step of measuring a work tact indicating a tact of the workplace;
A production tact calculation step of calculating a production tact indicating a tact of the production line based on the work tact;
A tact adjustment step of adjusting and updating the set tact by comparing the set tact and the production tact;
And a display step of displaying the work tact, the production tact and the updated set tact. A tact adjustment information storing step for storing tact adjustment information for adjusting the set tact,
The production management method according to claim 5, wherein, in the tact adjustment step, the set tact is adjusted using the tact adjustment information. A production management program for causing a computer to adjust the tact as an ability to process a workpiece for a production line that processes a workpiece at a work site to produce a product,
A tact setting step for setting a set tact for the production line;
A tact acquisition step of acquiring a work tact indicating a tact of the workplace;
A production tact calculation step of calculating a production tact indicating a tact of the production line based on the work tact;
A tact adjustment step of adjusting and updating the set tact by comparing the set tact and the production tact;
A production management program comprising: a display step for displaying the work tact, the production tact, and the updated set tact. A tact adjustment information storing step for storing tact adjustment information for adjusting the set tact,
8. The production management program according to claim 7, wherein, in the tact adjustment step, the set tact is adjusted using the tact adjustment information.

Images