JP5529620B2 - Process control device - Google Patents

Description

  The present invention relates to an apparatus for managing a work process (schedule), and more particularly to a method for changing (correcting) the work process in a case where a Gantt chart is used to display the work process.

  Conventionally, the Gantt chart has been widely used for managing work processes in a production line. The Gantt chart has processes and personnel on the vertical axis and time on the horizontal axis, and the relationship is represented by a rectangular area (band) with the work start time as the leading edge and the work end time as the trailing edge. Therefore, it is possible to easily recognize how much time is required for which work process.

  However, it is not uncommon to change or interrupt the work process due to an increase in processing work. In such a case, in changing (correcting) the work process on the Gantt chart, in Patent Document 1, normally, as described above. The work time is performed by the operator moving a part of the work steps displayed in a rectangular area (band) with an input operation means such as a mouse or a keyboard. After that, based on the assignment after the change, re-simulate the entire work process, display the Gantt chart again, check the effect of the change (correction), and if there is any inconvenience, change (correction), simulate, and check the above By repeating the above, the work process is changed or improved.

  However, in the above-described conventional technology, the work time of each work process is determined in advance in the master table, and it is assumed that the worker changes only the way of assignment (work order and equipment used). For this reason, there are cases where such work process changes (corrections) do not fit, that is, they cannot be completed within the prescribed time (not in time for delivery). In such cases, it is necessary to review the work process that becomes a bottleneck. become. Specifically, the efficiency of the work process can be improved by changing from an inexperienced worker to an experienced worker, increasing the number of workers, or switching the equipment to perform work from energy-saving operation to high-power operation. Is to improve the working time. In the case of adopting such a countermeasure, in this conventional technique, the master table must be changed, which is extremely time consuming and it is difficult to take a quick response.

  Thus, in Patent Document 2, the rectangular regions (bands) are displayed vertically on the Gantt chart, so that the operator can easily understand the overlap of work steps associated with the change (correction). As a result, since one side is not hidden in the overlap period, the actual work time can be accurately grasped, a violation (excessive load) with respect to the ability of the apparatus to perform the work, or a period in which the ability should be increased Can be easily confirmed.

JP 2002-251507 A JP 2009-230382 A

  In the above-mentioned conventional technology, although it can be seen that the work process is duplicated, as a countermeasure, it is possible to improve the efficiency of at least one of the duplicated processes, shorten the work time, and eliminate the duplication. The width of the rectangular area (band) does not change, so the actual work start time and work end time are not clear, and it is difficult to give work instructions to the site. In addition, the work time varies from work process to work process. By simply displaying the duplication of the work process described above, how much work process is improved (how much work time is reduced), how much work time is needed. It is not possible to accurately estimate whether or not it is packed, and it is not possible to easily determine a work process that requires measures to improve work efficiency.

  An object of the present invention is to provide a process management apparatus that allows an operator to easily recognize the current efficiency in each work process.

The process management apparatus of the present invention displays a plurality of work processes on a display means by a Gantt chart represented by a rectangular area with a work start time as a leading edge and a work end time as a trailing edge, and manages the work processes. In the apparatus, the efficiency in each work process is represented by the height of the rectangular area, and a Gantt chart display data creation part that is given to the display means, an input operation part that accepts the change of the work process, and a work process created in advance A change is accepted by the input operation unit with respect to a table, a work allocation change unit that changes a work time zone of a work process that has been accepted by the input operation unit, and a work process table created in advance. An efficiency change process designating unit that designates the work process in a predetermined range before or after the work process as a work process to be changed in efficiency; The work process designated by the efficiency changing process designating unit so as to maintain a predetermined process interval between the work processes when work is performed in the order of the work processes assigned by the work assignment changing unit. On the other hand, the working time of the rectangular area is expanded and contracted, the efficiency is changed, and the working process is shifted so that the area of the rectangular area becomes a constant work amount necessary for the working process, recreate the working process table after the change, characterized in that it comprises a step adjustment unit to be supplied to the Gantt chart display data producing unit.

  According to the above configuration, each work process is displayed on the display means by a Gantt chart represented by a rectangular area with the work start time as the leading edge and the work end time as the trailing edge, and the work process is managed. The Gantt chart display data creating unit for creating the display data of the Gantt chart displayed by the display unit represents the efficiency in each work process, that is, the work amount per unit time by the height of the rectangular area.

  Therefore, the worker can easily visually recognize the current efficiency in each work process. This improves the work efficiency of any process when it becomes necessary to modify (adjust) the work process due to a change in delivery time or interruption of other work in a work process created in advance. It is possible to easily and quickly cope with correction (adjustment) of the work process, such as how much work time can be reduced. Further, since the efficiency in each work process can be visually recognized, it is possible to easily determine a work process that requires a countermeasure to improve the work efficiency.

Preferably, the process adjustment unit includes a process data storage unit that stores current work process data, an efficiency change process data storage unit that stores a work process designated by the efficiency change process designation unit, and the work assignment change. The work was performed in the order of the work processes specified by the assignment change data with reference to the assignment change data storage section for storing the work assignment changed in the department, the efficiency change process data storage section and the assignment change data storage section. In such a case, the work process specified by the efficiency change process data so that the area of the rectangular area of each work process becomes a fixed work amount necessary for the work process, and a predetermined process interval is maintained. An efficiency change value calculation unit for changing the efficiency in step, an efficiency change data storage unit for storing efficiency change data obtained by the efficiency change value calculation unit, and the step A data storage unit and an efficiency change data storage unit, re-create the changed work process table that has shifted each work process, and comprises a simulation unit to store in the process data storage unit in the case of determination, The Gantt chart display data creation unit refers to the efficiency change data storage unit, changes the height of the rectangular area according to the efficiency of the work process after the efficiency change, and gives the chart height to the display means It is characterized by comprising a thickness correction unit.

  According to the above configuration, when the addition of the work process or the change of the time zone is accepted from the input operation part, the work assignment change part is a work whose change is accepted with respect to the work process table created in advance. While changing the work time zone of the process, the efficiency change process designating section changes candidates from inexperienced workers to veterans, increasing the number of workers, etc. Accept. Subsequently, when the process adjustment unit performs work in the order of the work processes assigned by the work assignment change part, the efficiency change is performed so as to maintain a predetermined process interval between the work processes. For the work process designated by the process designating unit, the work area of the rectangular area is expanded and contracted and the efficiency is changed so that the area of the rectangular area becomes a constant work amount necessary for the work process, And the work process is shifted (work start and end times are shifted), and the changed work process table is recreated.

  Therefore, even if the work process is added or the time zone is changed, the change can be easily handled by changing the efficiency of the process in the vicinity of the changed work process. If the result of the simulation satisfies the delivery date, etc., and the decision is made in the work process chart, it is registered in the work process data storage unit, and a Gantt chart according to the work process is displayed on the display means to perform subsequent process management. Just do it.

  Further, in the process management apparatus of the present invention, the chart height correction unit calculates the height of the rectangular area after the change, the ratio of the efficiency value after the change to the efficiency value before the change, and the height of the rectangular area before the change. It is characterized by determining by multiplying the size.

  According to said structure, the difference between a work process with a large change of an efficiency value and a small work process can be clarified.

  Therefore, when the improvement in efficiency is dealt with by increasing the number of personnel, it is possible to visually recognize when and how much is necessary.

  Furthermore, in the process management apparatus according to the present invention, the efficiency change value calculation unit is configured such that the required time in all work processes specified by the efficiency change process data remains constant, and the work process specified by the allocation change data. The efficiency is changed so as to absorb the increased amount.

  According to said structure, when performing a change (correction | amendment) by a movement or interruption of a work process, the influence can be made not to affect other than the work process of the said efficiency change object.

  The process management device of the present invention further includes an efficiency change upper limit data storage unit that stores an upper limit of the efficiency change amount in each work process, and the efficiency change value calculation unit calculates the efficiency after the change, When the calculation result exceeds the upper limit value in the efficiency change upper limit data storage unit, the upper limit value is applied.

  According to said structure, the said efficiency change value calculation part calculates the efficiency (processing time) after a change, The calculation result exceeds the upper limit memorize | stored in an efficiency change upper limit data storage part, Therefore If there is a limit to the improvement of work efficiency, the changed efficiency is set as the limit value.

  Therefore, the process can be corrected within the feasible range.

  Furthermore, in the process management apparatus of the present invention, when the upper limit value is applied to the efficiency after the change by the efficiency change value calculation unit, the simulation unit starts and ends the process after the work process. It is characterized by re-creating the work process table after the change by delaying.

  According to the above configuration, the simulation unit, when re-creating the work process table after the efficiency change, expands the efficiency of the work process to be changed to the upper limit, and for the subsequent processes, the start time and Delay the end time.

  Therefore, after expanding the efficiency of the work process to be changed to the upper limit, if it does not fall within the required time in all the work processes specified in the efficiency change process data, the required time will be extended, Even when the improvement in efficiency is limited, the process can be modified with high flexibility.

  In the process management apparatus of the present invention, the efficiency change upper limit data storage unit that stores the upper limit of the efficiency change amount in each work process, and the efficiency calculated by the efficiency change value calculation unit exceeds the upper limit value. Whether or not the efficiency change process can be assigned by the efficiency change process designating unit. If the allocation is impossible, the efficiency change process designating unit adds the efficiency change process. And a determination unit.

  According to the above configuration, within the time span from the start time of the process having the earliest process start time specified by the efficiency change process specifying unit to the completion time of the process having the latest process completion time. Then, in interrupting the additional process, the allocation change permission determination unit, the expansion width of the efficiency of each process calculated in the efficiency change value calculation unit, each stored in the efficiency change upper limit data storage unit The validity of the allocation of the work process that is the target of the efficiency change is judged from whether or not the upper limit of the efficiency in the process is exceeded. As a result, when the necessary expansion width exceeds the upper limit, that is, when allocation is impossible, the efficiency changing process is added to the efficiency changing process designating unit, and the same determination is performed.

  Therefore, it is possible to create an executable work process table with the minimum number of change processes, without specifying the work process to be changed efficiently in advance.

  The process management apparatus of the present invention, as described above, displays each of the plurality of work processes on the display means by a Gantt chart represented by a rectangular area with the work start time as the leading edge and the work end time as the trailing edge, In managing a work process, a Gantt chart display data creation unit that creates display data of the Gantt chart displayed by the display means represents the efficiency in each work process by the height of the rectangular area.

  Therefore, the worker can easily visually recognize the current efficiency in each work process. This improves the work efficiency of any process when it becomes necessary to modify (adjust) the work process due to a change in delivery time or interruption of other work in a work process created in advance. It is possible to easily and quickly cope with correction (adjustment) of the work process, such as how much work time can be reduced. Further, since the efficiency in each work process can be visually recognized, it is possible to easily determine a work process that requires a countermeasure to improve the work efficiency.

It is a block diagram which shows the electric constitution of the process management apparatus which concerns on one Embodiment of this invention. It is a figure for demonstrating the change method of the display of the Gantt chart which concerns on one Embodiment of this invention, and shows an initial state. It is a figure for demonstrating the change method of the display of the Gantt chart which concerns on one Embodiment of this invention, and shows the mode of designation | designated of the efficiency change process and its efficiency value. It is a figure for demonstrating the change method of the display of the Gantt chart which concerns on one Embodiment of this invention, and shows the mode after a change. It is a flowchart for demonstrating the change method of the display of the Gantt chart which concerns on one Embodiment of this invention. It is a block diagram which shows the electric constitution of the process management apparatus which concerns on other embodiment of this invention. It is a figure for demonstrating the change method of the work process which concerns on other embodiment of this invention, and shows the state which instruct | indicated the change of work allocation from the initial state. It is a figure for demonstrating the change method of the work process which concerns on other form of implementation of this invention, and shows the state under change of work assignment. It is a figure for demonstrating the change method of the work process which concerns on other form of implementation of this invention, and shows the mode of designation | designated of the change of work allocation and the efficiency change process accompanying it. It is a figure for demonstrating the change method of the work process which concerns on other embodiment of this invention, and shows the mode after a change. It is a flowchart for demonstrating the change method of the work process which concerns on other embodiment of this invention. It is a block diagram which shows the electric constitution of the process management apparatus which concerns on the further another form of implementation of this invention. It is a figure for demonstrating the change method of the work process which concerns on the further another form of implementation of this invention, and shows the state which instruct | indicated the change of work allocation from the initial state. It is a figure for demonstrating the change method of the work process which concerns on the further another form of implementation of this invention, and shows the state in the middle of work assignment change. It is a figure for demonstrating the change method of the work process which concerns on the further another form of implementation of this invention, and shows the mode of designation | designated of the change of work allocation and the efficiency change process accompanying it. It is a figure for demonstrating the change method of the work process which concerns on other form of implementation of this invention, and shows a mode of re-designation of an efficiency change process. It is a figure for demonstrating the change method of the work process which concerns on other form of implementation of this invention, and shows the mode after a change. It is a flowchart for demonstrating the change method of the work process which concerns on further another form of implementation of this invention. It is a block diagram which shows the electric constitution of the process management apparatus which concerns on other embodiment of this invention. It is a figure for demonstrating the change method of the work process which concerns on other embodiment of this invention, and shows an initial state. It is a figure for demonstrating the change method of the work process which concerns on other embodiment of this invention, and shows the state which instruct | indicated the change of work allocation from the initial state. It is a figure for demonstrating the change method of the work process which concerns on other form of implementation of this invention, and shows the state under change of work assignment. It is a figure for demonstrating the change method of the work process which concerns on other form of implementation of this invention, and shows the mode of designation | designated of the change of work allocation and the efficiency change process accompanying it. It is a figure for demonstrating the change method of the work process which concerns on other embodiment of this invention, and shows the mode of re-designation of an efficiency change process. It is a figure for demonstrating the change method of the work process which concerns on other form of implementation of this invention, and shows a mode that the efficiency change process is designated again. It is a figure for demonstrating the change method of the work process which concerns on other embodiment of this invention, and shows the mode after a change. It is a flowchart for demonstrating the change method of the work process which concerns on other embodiment of this invention.

(Embodiment 1)
FIG. 1 is a block diagram showing an electrical configuration of a process management apparatus 1 according to an embodiment of the present invention. As shown in FIGS. 2 to 4 to be described later, the process management apparatus 1 displays a plurality of work processes by a Gantt chart that is represented by a rectangular area having a work start time as a leading edge and a work end time as a trailing edge. It is an apparatus that displays on means 21 and manages the work process.

  The process management apparatus 1 is generally configured to include a display unit 2 including the display unit 21, an input operation unit 3, a process adjustment unit 4, and a Gantt chart display data creation unit 5. The display unit 2 includes the display unit 21 and an output interface 22 that displays and drives the display unit 21 including a liquid crystal display in response to various signals described below. The input operation unit 3 includes an input unit 31 including a mouse and a keyboard, and an input interface 32 that converts an input operation to the input unit 31 by an operator into a predetermined input signal.

  The process adjustment unit 4 responds to an input operation from the input means 31 and a process data storage unit 41 that stores current work process data, an initial process creation unit 42 that creates initial work process data, and will be described later. An efficiency changing process specifying unit 43 for specifying a work process whose efficiency should be changed, an efficiency specifying unit 44 for specifying a change value of the efficiency in response to an input operation from the input means 31, and the efficiency changing Refer to the efficiency change data storage unit 45 for storing the work process specified by the process specification unit 43 and the change value of the efficiency specified by the efficiency specification unit 44, and the process data storage unit 41 and the efficiency change data storage unit 45. In addition, the operation process table after the efficiency change is re-created, and the simulation unit 46 is configured to be stored in the process data storage unit 41 in the case of determination.

  It should be noted that in the present embodiment, the Gantt chart display data creation unit 5 displays data for displaying the work process data stored in the process data storage unit 41 on the display unit 21 in a Gantt chart. In creating, referring to the efficiency change data storage unit 45, the height of the rectangular area is changed according to the efficiency of the work process after the efficiency change, and is given to the display means 21.

  2-4 is a figure for demonstrating the change method of the display of the Gantt chart. In the present embodiment, the work process (resource) is represented by 5 processes as indicated by the vertical axis, the work time is represented by the horizontal axis, and the work (lot) to be worked is indicated by reference numerals A, B, C, D and E. I will. Even in the same work process, the work time varies depending on the amount of work and the like (in the example of FIG. 2, from 40 minutes to 220 minutes). In addition, a specified time interval (lead time) is set between workpieces and between adjacent work processes for workpiece exchange and delivery, etc., and the workpiece delivery takes 10 minutes at the shortest. 30 minutes is specified for Moreover, the delivery date of the work is given as a relative time from the start time of the work process, and as shown by the triangular index, 620 minutes, 700 minutes, 880 for each work A, B, C, D, E. Minutes, 930 minutes and 1080 minutes.

  First, FIG. 2 is a Gantt chart showing the work process as created by the initial process creation unit 42. It is understood that the workpiece replacement time and the workpiece delivery time are accumulated at different work times for each of the workpieces A, B, C, D, and E, and the completion time is obtained. However, in the process in which the work time becomes long (process 3 in the example of FIGS. 2 to 4), the completed product of the previous process (process 2) cannot be accepted until the processing of the self process is completed. The delivery time is longer as the workpiece is processed.

  In the example of FIG. 2, the first work, the work A with a relatively small work amount, and the last work E, which has a relatively long delivery time, are in time for delivery, but the other works B, For C and D, there is a delay in delivery.

  In this state, the operator looks over the Gantt chart, and designates a work process that is effective in eliminating the delay in delivery time and has room for improvement in efficiency from the input means 31 (in the example of FIG. Specify workpieces B, C, and D). In response to the designation, the efficiency changing process designating unit 43 creates data for designating the efficiency changing process and gives it to the efficiency changing data storage unit 45 and also gives it to the output interface 22. As shown in FIG. 3, the work process to be changed is discolored and displayed. Alternatively, blinking or a framed display as indicated by reference numeral α1 in FIG. 3 may be performed.

  Further, in response to the specification of the efficiency changing process from the input means 31, the efficiency specifying unit 44 creates input screen data of the change magnification and gives it to the output interface 22, so that the reference symbol α2 in FIG. The input screen display as shown in FIG. In response to this, when the operator inputs the change magnification from the input means 31 (1.5 in the example of FIG. 3), the efficiency designating unit 44 creates data for designating the change magnification, and changes the efficiency. The data is given to the data storage unit 45 and also given to the output interface 22.

  Thereafter, in response to a simulation start operation or the like from the input means 31, the simulation unit 46 refers to the process data storage unit 41 and the efficiency change data storage unit 45 and re-creates the work process table after the efficiency change. Then, the data is given to the Gantt chart display data creation unit 5 via the process data storage unit 41, and the display data of the Gantt chart on the display means 21 is created. At this time, the chart height correction unit 51 of the Gantt chart display data creation unit 5 refers to the efficiency change data storage unit 45 and calculates the ratio of the efficiency value after the change to the efficiency value before the change to the rectangle before the change. Multiply the height of the area to create display data for a new rectangular area.

  Thus, from the initial state of FIG. 2, for example, as shown in FIG. 3, by increasing the efficiency value by 1.5 times for the workpieces B, C, and D in step 3, the simulation result is as shown in FIG. The processing time is reduced to 1 / 1.5. That is, since the original processing time in the process 3 of the workpieces B, C, and D is 150 minutes, 160 minutes, and 60 minutes, respectively, it can be shortened to 100 minutes, 107 minutes, and 40 minutes.

  Thus, the work start time in the subsequent processes 4 and 5 after the work B is advanced, and the work process chart capable of eliminating the delay in delivery of the work B, C, and D can be recreated. In the example of FIGS. 3 and 4, the same efficiency value is set for the three works B, C, and D at once, but may be set individually.

  As a result of the simulation, if the decision is made with the re-created work process table due to satisfying the delivery date, etc., the operator performs a determination operation or the like from the input means 31, and the re-created work process table is A Gantt chart stored in the process data storage unit 41 and based on the work process table is displayed on the display means 21, and subsequent process management is performed. On the other hand, if it is not a decision, the worker repeats the specification of the efficiency changing process and the specification of the magnification again.

  FIG. 5 is a flowchart for explaining a method for changing the display of the Gantt chart as described above. In step S1, initial work process data is created by the initial process creation unit 42 and stored in the process data storage unit 41. In step S2, the Gantt chart display data creation unit 5 uses the Gantt chart display data from the work process data. Is generated and given to the display unit 2 for display. In step S3, it is determined whether or not there is an end instruction from the input means 31, and when the end instruction is given, the process is terminated and the process is managed as it is in the Gantt chart. In the case of (correction), the process proceeds to step S4.

  In step S4, one or more work processes whose efficiency values are to be changed are designated from the input means 31, and the work processes are displayed. In step S5, an efficiency change value input screen for each work process is displayed. Is displayed, and an input operation is performed accordingly. In step S6, the simulation unit 46 performs a simulation in response to the input results of the changed values. From the result, the Gantt chart display data creation unit 5 creates and displays the Gantt chart display data in step S7. When displaying on the means 21, the chart height correction unit 51 multiplies the ratio of the efficiency value after the change to the efficiency value before the change to the height of the rectangle area before the change, and creates display data for a new rectangular area. To do.

  In this way, when the Gantt chart display data creation unit 5 creates Gantt chart display data and displays it on the display means 21, the chart height correction unit 51 determines the height of the rectangular area in each current work process. By creating display data having a height corresponding to the value, the worker can easily visually recognize the current efficiency in each work process. This improves the work efficiency of any process when it becomes necessary to modify (adjust) the work process due to a change in delivery time or interruption of other work in a work process created in advance. It is possible to easily and quickly cope with correction (adjustment) of the work process, such as how much work time can be reduced. The result of correction (adjustment) of the work process is appropriately transmitted to the line. Further, since the efficiency in each work process can be visually recognized, it is possible to easily determine a work process that requires a countermeasure to improve the work efficiency.

  Further, the chart height correcting unit 51 sets the height of the rectangular area after the change of the work efficiency to a value obtained by multiplying the ratio before the change by the ratio of the efficiency value after the change to the efficiency value before the change. The difference between a work process with a large change in efficiency value and a small work process can be clarified. This makes it possible to easily visually recognize when and how much it is necessary when the improvement in efficiency is handled by an increase in personnel. The ratio may not accurately reflect the ratio of the efficiency values, and is easy to understand, for example, 10% up to 10% and 20% up to 20%. May be increased.

  Furthermore, when changing the efficiency by changing from an inexperienced worker to an experienced worker or increasing the number of workers, the efficiency of one or more arbitrary work processes is changed from the input means 31. As a result, the simulation unit 46 of the process adjustment unit 4 expands and contracts the period of the rectangular region while ensuring a constant work amount, that is, a constant work amount, and a predetermined process interval. Therefore, it is possible to easily determine the suitability of the change because the simulation is performed to shift the work process after the efficiency change (shift the work start and end times). As a result, the work process chart can be corrected (adjusted) so as to be the most effective work process.

(Embodiment 2)
FIG. 6 is a block diagram showing an electrical configuration of a process management apparatus 1a according to another embodiment of the present invention. This process management apparatus 1a is similar to the above-described process management apparatus 1, and corresponding portions are denoted by the same reference numerals, and description thereof is omitted. In the process management apparatus 1 described above, a process in which the efficiency of a designated work process is simply improved while observing a predetermined work process is to be noted. Then, with respect to the addition of the work process, the change of the time zone, etc., the work process for increasing the efficiency and the up rate are determined, and the result is simulated.

  That is, when an addition of the work process, a change in time zone, or the like is received from the input unit 31, the work allocation change unit 6 receives a change from the work process table created in advance by the initial process creation unit 42. While changing the working time zone of the working process, the efficiency changing process designating unit 7 may change the efficiency by changing from an inexperienced worker to an experienced worker or increasing the number of workers. Are accepted for a predetermined range of work processes on at least one side before or after the work process in which the change is accepted.

  Therefore, the process adjustment unit 4a includes the process data storage unit 41, the initial process creation unit 42, the efficiency change data storage unit 45a, and the simulation unit 46a, and the efficiency change process data storage unit 47. An allocation change data storage unit 48 and an efficiency change value calculation unit 49 are provided.

The efficiency change process data storage unit 47 stores the work process designated by the efficiency change process designation unit 7. The assignment change data storage unit 48 stores the work assignment changed by the work assignment change unit 6. When the efficiency change value calculation unit 49 refers to the efficiency change process data storage unit 47 and the allocation change data storage unit 48 and performs work in the order of the work processes specified by the allocation change data, The efficiency in the work process specified by the efficiency change process data is changed so that the area of the rectangular area becomes a constant work amount necessary for the work process and a predetermined process interval is maintained. . The efficiency change data obtained by the efficiency change value calculation unit 49 is stored in the efficiency change data storage unit 45a.

  On the other hand, the simulation unit 46a refers to the process data storage unit 41 and the efficiency change data storage unit 45a, re-creates the changed work process table in which each work process is shifted, and stores the process data storage unit 41 from the process data storage unit 41. The data is displayed on the display means 21 via the Gantt chart display data creation unit 5 and is stored in the process data storage unit 41 when the re-created work process table is determined. The chart height correction unit 51 of the Gantt chart display data creation unit 5 refers to the efficiency change data storage unit 45a and corresponds to the height of the rectangular area in the Gantt chart corresponding to the efficiency of the work process after the efficiency change. Create the Gantt chart display data creation with changed.

  7-10 is a figure for demonstrating the change method of the above work processes. In the present embodiment, the work process (resource) is represented by 5 processes as shown by the vertical axis, the work time is represented by the horizontal axis, and the works to be worked are six reference symbols A, B, C, D, E, and F. To do. Similarly to FIG. 2, the standard time for each work process is 40 to 220 minutes, and the time intervals between workpieces and adjacent work processes are 10 minutes and 30 minutes, respectively. Furthermore, the workpiece delivery time is 1100 minutes for the workpieces A, B, C, D, and E, and the workpiece F is only 750 minutes as indicated by the triangular index. Further, it is assumed that only the work F is completed (completed) by the process 3.

  First, FIG. 7 is a Gantt chart showing the work process as created by the initial process creation unit 42. For each work A, B, C, D, E scheduled from the beginning, the work exchange time and the work delivery time are accumulated at different work times, and the completion time is reached. In this state, it is assumed that the worker adds the work F to the process 3 from the work assignment changing unit 6. However, as shown in FIG. 7, if the work is simply performed after all the scheduled processing of the workpieces A, B, C, D, and E is completed, it is not in time for the delivery date. .

  For this reason, as shown in FIG. 8, the worker assigns the work F interrupt to the work allocation between the process intervals C and D of the work closest to the delivery date before the delivery date in the process 3 where the interruption occurs. Designated from the change unit 6 and stored in the allocation change data storage unit 48, and as shown in FIG. 9, in accordance with the interruption, the work process whose efficiency should be changed is designated and stored in the efficiency change process storage unit 47. (In the example of FIG. 9, the work C and D to be interrupted and the previous work A and B are designated by a frame).

  In response to this, the efficiency change value calculation unit 49, as stored in the allocation change data storage unit 48, in step 3, the work F can be fitted between the work process intervals C and D. An efficiency change value necessary for the workpieces A, B, C, D, and F stored in the efficiency change process storage unit 47 is calculated. At that time, the efficiency change value calculation unit 49 keeps the required time in all the work processes (between workpieces A to D) specified by the efficiency change process data in the efficiency change process storage unit 47, and the allocation change data The efficiency is changed so as to absorb the increase in the work process specified by the allocation change data in the storage unit 48.

Specifically, the standard processing time of each work A, B, C, F, D is TA, TB, TC, TF, TD, respectively 130 minutes, 150 minutes, 160 minutes, 60 minutes, 80 minutes, The process interval of the workpieces A, B, C, F, and D is J, 10 minutes, the work start time of the first work A whose efficiency should be changed in the process 3 is SA, and 270 minutes. When the work start time of the last workpiece D to be changed is ED, it is 800 minutes, and K is the ratio of the required efficiency increase,
(TA + TB + TC + TF + TD) × 1 / K + J × 4 = ED−SA (1)
Therefore,
(130 + 150 + 160 + 60 + 80) × 1 / K + 10 × 4 = 800-270
From
K = 58/49 ≒ 1.184
It becomes.

  As a result, the processing times of the workpieces A, B, C, D, E, and F are 109 minutes, 126 minutes, 135 minutes, 50 minutes, and 67 minutes, respectively. As shown in FIG. However, it is understood that it is now in time for delivery.

  The efficiency increase ratio K and the processing times of the workpieces A, B, C, D, E, and F obtained in this way are stored in the efficiency change data storage unit 45a and used for the start operation of the simulation from the input means 31. In response, the simulation unit 46a re-creates the work process table after the process and the efficiency change based on the ratio K, the efficiency change process data, and the allocation change data, and passes the process data storage unit 41 through the process data storage unit 41. To the Gantt chart display data creation unit 5 to create display data of the Gantt chart on the display means 21. At this time, the chart height correction unit 51 of the Gantt chart display data creation unit 5 refers to the efficiency change data storage unit 45a and calculates the ratio K of the efficiency value after the change to the efficiency value before the change. By multiplying the height of the rectangular area, new rectangular area display data as shown in FIG. 10 is created.

  As a result of such a simulation, when the delivery date is determined by satisfying the delivery date or the like, the worker performs a determination operation or the like from the input means 31 to perform the re-created work process. The table is stored in the process data storage unit 41, a Gantt chart based on the work process table is displayed on the display means 21, and subsequent process management is performed. On the other hand, if it is not a decision, the worker repeats the assignment of work and the designation of the efficiency changing process again.

  For example, if the processing time of the workpiece D is short, and an additional workpiece F cannot be interrupted between the process intervals C and D of the workpiece closest to the delivery date before the delivery date, the previous workpiece You may make it engage | insert between process space | intervals B and C, Furthermore, you may make it improve not only the process 3 of the additional workpiece | work F but the processes 2 and 1 before that. Further, in steps 4 and 5 after the step 3 where the interruption occurs, the works A and B that have been processed earlier than originally planned due to the efficiency improvement of the step 3, as shown in FIG. In addition to processing according to the schedule, the schedule may be advanced and processed. Furthermore, in the example of FIG. 10, although the same efficiency value is set for the five workpieces A, B, C, F, and D at once, they may be set individually.

  FIG. 11 is a flowchart for explaining a method for changing a work process as described above. Similar to the processing of FIG. 5, the corresponding steps are denoted by the same step numbers. In step S1, initial work process data is created by the initial process creation unit 42 and stored in the process data storage unit 41. In step S2, the Gantt chart display data creation unit 5 uses the Gantt chart display data from the work process data. Is generated and given to the display unit 2 for display. In step S3, it is determined whether or not there is an end instruction from the input means 31, and when the end instruction is given, the process is terminated and the process is managed as it is in the Gantt chart. In the case of (correction), the process proceeds to step S11.

  In step S11, one or a plurality of work processes to be added or changed in time zone are designated from the input means 31, and the work process is displayed. In step S12, the addition or time zone is displayed. Along with the change or the like, a work process whose efficiency is to be changed is designated from the input means 31 and the work process is displayed. In step S13, the efficiency increase ratio K is determined for the work process whose efficiency should be changed as described above. In step S6, in response to the input results of these changed values, the simulation unit 46a performs a simulation. From the result, the Gantt chart display data creation unit 5 creates and displays display data for the Gantt chart in step S7. When displaying on the means 21, the chart height correction unit 51 multiplies the ratio of the efficiency value after the change to the efficiency value before the change to the height of the rectangle area before the change, and creates display data for a new rectangular area. To do.

  By configuring in this way, from the input means 31, the work allocation changing unit 6 is designated to add the work process or the time zone is changed, and accordingly, the work whose efficiency is likely to be changed to the efficiency changing process designating part 7. When a process candidate is designated, when the efficiency change value calculation unit 49 in the process adjustment unit 4a performs work in the order of the work processes assigned by the work assignment change unit 6, it is predetermined between the work processes. So that the area of the rectangular area of the Gantt chart is a certain amount of work necessary for the work process with respect to the work process designated by the efficiency change process designating unit 7 so as to maintain the process interval. While changing the efficiency of the rectangular area, the simulation unit 46a shifts the work process (shifts the work start and end times) based on the obtained efficiency and work time, Since the work schedule after the change is re-created, even if the work process is added or the time zone is changed, the change of the efficiency of the process near the changed work process can be easily changed. Can respond. In other words, in addition to the work process to be interrupted, it is a case where the efficiency of the previous and subsequent work processes is improved and the time to interrupt is devised. It is difficult to estimate immediately whether it is necessary to improve efficiency, etc., and after the calculation on the desk, the master table that stores the standard work time of each work process is changed. In contrast to this, in this embodiment, such a complicated operation can be eliminated.

  In addition, the efficiency change value calculation unit 49 changes the efficiency so as to absorb the addition, the change of the time zone, and the like while the required time in all candidate work processes remains constant. When the change (correction) is performed due to or interruption, it is possible to prevent the influence from affecting the work process other than the efficiency change target.

(Embodiment 3)
FIG. 12 is a block diagram showing an electrical configuration of a process management apparatus 1b according to still another embodiment of the present invention. This process management device 1b is similar to the above-described process management device 1a, and the corresponding parts are denoted by the same reference numerals, and the description thereof is omitted. In the above-described process management apparatuses 1 and 1a, the calculation by the efficiency change value calculation unit 49 merely determines the efficiency increase rate (the ratio K) from the required work amount in the allowable work time. It should be noted that the process adjustment unit 4b of the process management apparatus 1b is further provided with an efficiency change upper limit data storage unit 50 in association with the efficiency change value calculation unit 49b, and the efficiency change value calculation unit 49b. Is to apply (limit) the upper limit value when the calculated up rate (the ratio K) exceeds the upper limit value in the efficiency change upper limit data storage unit.

  FIG. 13 to FIG. 17 are diagrams for explaining a method of changing a work process with the upper limit of the efficiency increase rate as described above. FIG. 13 is a Gantt chart showing the work process that has been created by the initial process creation unit 42, and in the same manner as in FIG. 7, the work A, B, C, D, and E to be processed in steps 1 to 5 are shown. Suppose that the workpiece F up to step 3 is interrupted. Further, it is assumed that the work D has no work in the step 4. The standard value of the working time in each process 1 to 5 is 40 minutes to 160 minutes. Further, as described above, 30 minutes for delivery between processes, and 10 minutes as minimum preparation time between successive work in the same process. It is assumed that there is a need for a time margin.

  In the present embodiment, an upper limit value of the efficiency increase rate (the ratio K) in each work process is preset in the efficiency change upper limit data storage unit 50 (hereinafter, in the present embodiment, The upper limit value is a uniform 15% increase in all work steps 1 to 5). In addition, the delivery date of each work A, B, C, D, E, F is calculated as a relative time from the start time of the process, 750 minutes for the additional work F, and in the present embodiment, the work D, E is also given a delivery date, which is 980 minutes and 1090 minutes, respectively, and before interruption, these works D and E are assumed to have been completed (completed) within the delivery date.

  As shown in FIG. 13, simply by adding the work process of the workpiece F after the processing of all the workpieces A, B, C, D, and E that have been scheduled is completed, the additional workpiece F is added. Is not in time for delivery. Therefore, as in FIG. 8 described above, as shown in FIG. 14, the worker, in the process 3 where the interruption occurs, before the delivery date, between the process intervals C and D of the workpieces closest to the delivery date, Is specified from the work allocation change unit 6 and is stored in the allocation change data storage unit 48. Also, as shown in FIG. The process is stored in the process storage unit 47 (in the example of FIG. 15, the works A, B, and C before the work D to be interrupted are designated by a frame).

  In response to this, the efficiency change value calculation unit 49b, as stored in the allocation change data storage unit 48, in step 3, the work F can be fitted between the work C and D processes. An efficiency change value necessary for the workpieces A, B, and C stored in the efficiency change process storage unit 47 is calculated. At that time, as described later, the efficiency change value calculation unit 49b refers to the efficiency change upper limit data storage unit 50, and the calculated change value (up rate (ratio K)) exceeds the 15% of the upper limit value. If it exceeds, the upper limit value is set, and the subsequent processing of the workpieces D and E is sequentially lowered after the processing of these workpieces A, B, C, and F.

  Specifically, first, as in FIG. 10, the efficiency change value calculation unit 49 b calculates the efficiency change values necessary for the workpieces A, B, and C stored in the efficiency change process storage unit 47. That is, even if the work time and the preparation time of the work F are further added after fixing the required time from the processing start time of the original work A to the processing completion time of the work C in the step 3, the work time and the preparation time thereof are added. An efficiency change (improvement) value for enabling the work to be completed within the required time is calculated for the workpieces A, B, and C. As a method thereof, for example, as in the case of Equation 1, it is possible to set the value of K obtained by solving the following equation for K as the efficiency change magnification.

(TA + TB + TC) × 1 / K + TF + J × 3 = EC−SA (2)
Accordingly, the standard processing times of the workpieces A, B, and C are TA, TB, and TC, which are 150 minutes, 100 minutes, 150 minutes, and 100 minutes, respectively. Min), EC is the original process completion time (620 minutes) in process 3 of work C, and SA is the process start time (200 minutes) in process 3 of work A.
(150 + 100 + 150 + 100) × 1 / K + 10 × 3 = 620−200
From
K = 50/39 ≒ 1.39
It becomes.

  However, this up rate (ratio K) exceeds the above-mentioned upper limit (+ 15%), and execution is impossible = constraint violation. As a method of transmitting this situation to the worker, as shown in FIG. 16, the height of the Gantt chart displayed on the display means 21 is changed to 1.39 times, and the height portion exceeding 1 time is It is also possible to display a conspicuous color such as red to indicate a violation of the constraint. The efficiency change value calculation unit 49b indicates that the restriction is violated, and then restricts the up rate (ratio K) to 15% of the upper limit value in accordance with the restriction, and stores the efficiency change data storage. After storing in the unit 45a, the simulation unit 46a uses the new up rate (ratio K) to shift the work processes of the workpieces A, B, and C to be increased and the subsequent workpieces F, D, and E. To do. That is, based on the allocation change information (change the work order of the process 3 of the work F to the fourth) and the efficiency change data (the processing time after the change in the process 3 of the work A, B, C described above), Execute the simulation of the whole process with justification. The simulation result (start time and end time of each work process) is stored in the process data storage unit 41.

  FIG. 17 shows the simulation result. Since the efficiency increase rate (ratio K) in the workpieces A, B, and C in step 3 is limited by the upper limit (+ 15%), the original value of the workpiece C is shown. The processing completion time of the additional work F is delayed by 60 minutes with respect to the processing completion time (completion reference). The influence is propagated with a delay in the subsequent work (work D, E work) of process 3, but each work F, D, E is in time for delivery, and the process addition work is finished. Become. At the end, the Gantt chart whose height has been finally corrected by the chart height correcting unit 51 is redisplayed on the display means 21 and becomes as shown in FIG.

  On the other hand, when the delivery date is delayed for the work F which is completed in the process 3, the operator can further fit the work between the previous works B and C, It can be dealt with by specifying efficiency improvement. In addition, if there is a delay in the delivery date for the workpieces D and E on which the operations up to the subsequent steps 4 and 5 are performed, the worker should respond by designating an increase in the efficiency of the subsequent steps 4 and 5. You can also.

  FIG. 18 is a flowchart for explaining a method for changing a work process as described above. Similar to the processing of FIG. 11, the corresponding steps are denoted by the same step numbers. In step S1, initial work process data is created by the initial process creation unit 42 and stored in the process data storage unit 41. In step S2, the Gantt chart display data creation unit 5 uses the Gantt chart display data from the work process data. Is generated and given to the display unit 2 for display. In step S3, it is determined whether or not there is an end instruction from the input means 31, and when the end instruction is given, the process is terminated and the process is managed as it is in the Gantt chart. In the case of (correction), the process proceeds to step S11.

  In step S11, one or a plurality of work processes to be added or changed in time zone are designated from the input means 31, and the work process is displayed. In step S12, the addition or time zone is displayed. Along with the change or the like, a work process whose efficiency is to be changed is designated from the input means 31 and the work process is displayed. Subsequently, in step S21, the upper limit value of the efficiency increase rate (ratio K) is read from the efficiency change upper limit data storage unit 50 for the work process whose efficiency is to be changed. In step S13a, for the work process whose efficiency is to be changed, the efficiency increase ratio K is determined within the range of the upper limit as described above. In step S6, in response to the input results of these changed values, the simulation unit 46a performs a simulation. From the result, the Gantt chart display data creation unit 5 creates and displays display data for the Gantt chart in step S7. When displaying on the means 21, the chart height correction unit 51 multiplies the ratio of the efficiency value after the change to the efficiency value before the change to the height of the rectangle area before the change, and creates display data for a new rectangular area. To do.

  Thus, the efficiency change value calculation unit 49b calculates the efficiency increase rate (ratio K) after the change, and the calculation result exceeds the upper limit stored in the efficiency change upper limit data storage unit 50. If there is a limit to the improvement of work efficiency, it is possible to modify the process within the feasible range by setting the efficiency after the change as the limit value, and whether the change width of the efficiency is within the upper limit range. It will be possible to judge easily.

  In addition, when moving the work time zone of a specific workpiece, even if there is no free time available for processing the specific workpiece at the destination, and there is an upper limit to the processing capacity improvement for each workpiece, By temporarily improving the work capacity up to the upper limit and delaying the subsequent work as much as possible, it is possible to easily execute a complicated process correction for eliminating the delay in delivery time in a short time.

(Embodiment 4)
FIG. 19 is a block diagram showing an electrical configuration of a process management apparatus 1c according to another embodiment of the present invention. This process management apparatus 1c is similar to the above-described process management apparatus 1b. It should be noted that, in the process adjustment unit 4c of the process management device 1c, does the efficiency calculated by the efficiency change value calculation unit 49b exceed the upper limit value stored in the efficiency change upper limit data storage unit 50? Whether or not the efficiency change process designation unit 7c determines whether the efficiency change process can be allocated. If the allocation is impossible, the efficiency change process designation unit 7c adds the efficiency change process. The determination unit 40 is provided.

  That is, the allocation change possibility determination unit 40 determines the completion time of the process with the latest process completion time from the start time of the process with the earliest process start time specified by the efficiency change process specification unit 7. In order to interrupt an additional process within the time width up to, each process stored in the efficiency change upper limit data storage unit is an expansion of the efficiency of each process calculated by the efficiency change value calculation unit 49b. The validity of the allocation of the work process that is the target of the efficiency change is judged based on whether or not the upper limit of the efficiency is exceeded. As a result, if the necessary efficiency expansion width exceeds the upper limit, that is, if allocation is impossible, the efficiency changing process is added to the efficiency changing process designating unit 7c, and the same determination is performed.

  FIG. 20 to FIG. 26 are flowcharts showing a state of automatic designation of the efficiency changing process as described above. FIG. 20 is a Gantt chart showing the work process that has been created by the initial process creation unit 42. In steps 1 to 5, the workpieces to be processed are A, B, C, D, and E. In relation, the work order is switched between the works C, D, and E between the process 2 and the process 3, and the order is E → D → C. For this reason, it is assumed that a setup change has occurred for 40 minutes between work D and work C in step 3. The standard value of the working time in each process 1 to 5 is 50 minutes to 130 minutes, and as described above, 30 minutes for delivery between processes, and 10 minutes as minimum preparation time between consecutive work in the same process. It is assumed that there is a need for a time margin.

  In the present embodiment, the efficiency change upper limit data storage unit 50 is preset with an upper limit value of the efficiency increase rate (the ratio K) in each work process. Here, the step 3 for changing the efficiency is specifically shown below, and the standard work times of the workpieces A, B, C, and E are 130 minutes, 150 minutes, 50 minutes, and 70 minutes, respectively. The upper time limit (the most shortened work time) is 100 minutes, 110 minutes, 40 minutes, and 50 minutes, respectively. Moreover, the delivery date of each workpiece | work A, B, C, D, E is calculated as a relative time from the start time of a process, and shall be 620 minutes, 820 minutes, 1050 minutes, 930 minutes, and 890 minutes, respectively.

  As shown in FIG. 20, when the simulation unit 46 a simply gives priority to the delivery date and sees the simulation result, the operator changes the work allocation change information (changed) from the input operation unit 3 through the work allocation change unit 6. When the operation and the order after the change are input, they are stored in the assignment change data storage unit 48, and from the simulation unit 46a to the display means 21 via the process data storage unit 41 and the Gantt chart display data creation unit 5. A work assignment change screen as shown in FIG. 21 is displayed. Here, in order to change the work order of the work D → C in which the setup change work is generated in the process 3 as described above, the work order of the work C is set between the work B and E (third from the front). Instructed to move to.

  In the present embodiment, in the step 3, when the work is performed in the order of the workpieces B → C → E as described above, it is assumed that no setup change occurs. For this reason, the change in the order can avoid the occurrence of a setup change operation in the step 3. However, as can be understood from FIG. 21, during the transfer from the normal step 2 to the step 3, between the workpieces B and E, Has no time to interrupt C's work. On the other hand, in the process 3, when the work C is assigned between the work B and E by lowering the work start time after the work E, as shown in FIG. 22, the lowered work E and D are delayed in delivery date. become.

  Therefore, in the present embodiment, the efficiency change process designating unit 7c performs an operation to be an efficiency change target among the tasks related to the change destination based on the assignment change data stored in the assignment change data storage unit 48. to add. Here, since it is the first time, process 3 of work C, which is the movement source, is added (designated) as the initial change work. The reason why the work C is first selected as the efficiency change target work is based on the idea that “the work is added as an efficiency change target in order from the closest work at the change destination”. The work of process 3 of the selected workpiece C is stored in the efficiency change process storage unit 47 as an efficiency change target work. Note that the number of operations selected here is not limited to one as in the present embodiment, but may be a plurality.

  Next, with this work C as the efficiency change target work, the efficiency change value calculation unit 49b, in the same manner as in FIG. 8 and FIG. The efficiency change value of C is calculated. Here, as described above, since there is no allowance time between the workpieces B and E in the step 3, such as the time between delivery from the step 2 to the step 3, it is impossible in practice. As shown, the time allowed for processing the workpiece C needs to be 0 (efficiency is infinite). Therefore, upon receiving the calculation result, the allocation change permission determination unit 40 reads the upper limit work time of the workpiece C in the process 3 from the efficiency change upper limit data storage unit 50, and determines that the allocation is impossible. The result cannot be assigned. FIG. 23 shows a state where the time allowed for the processing of the workpiece C is 0 minute, but the processing of the workpiece C cannot be absorbed even if the efficiency is increased to the upper limit (40 minutes).

  In response to the determination result, the efficiency change process designating unit 7c re-assigns the work to be changed in the work related to the change destination based on the assignment change data stored in the assignment change data storage unit 48 again. Add In FIG. 24, the processing of the previous work B can also be secured to some extent by increasing the efficiency up to the upper limit. However, the processing time of the work C can be secured to some extent, but only within the original processing time of the work B. The state which cannot absorb the process of the workpiece | work C is shown.

  In the state shown in FIG. 24, when the efficiency change value calculation unit 49b calculates the up rate K of the workpieces B and C to be increased in efficiency in the same manner as in the expressions 1 and 2, the following results.

(TB + TC) × 1 / K + J × 1 = EB−SB (3)
Therefore, the standard processing times of the workpieces B and C are TB and TC, respectively, and are 150 minutes and 50 minutes, respectively, J is a necessary preparation time (10 minutes) between successive operations, and EB is a process of the workpiece B 3 is the original processing completion time (540 minutes) in step 3, and SB is the processing start time (410 minutes) in step 3 of work B.
(150 + 50) × 1 / K + 10 × 1 = 540-410
From
K = 20/12 ≒ 1.67
It becomes.

Therefore, when converted to processing time,
Work B process 3: 150 / 1.67 = 90 minutes Work C process 3: 50 / 1.67 = 30 minutes, which are not within the upper limit of 100 minutes and 40 minutes, respectively.

  For this reason, when the allocation change possibility determination unit 40 determines that the allocation is impossible again, the efficiency change process specifying unit 7c adds the workpiece E close to the workpiece C to the process to be increased again, as shown in FIG. To do. In the state of FIG. 25, when the efficiency change value calculation unit 49b calculates the up rate K of the workpieces B, C, and E to be increased in efficiency in the same manner as the above-described equations 1 to 3, the following is obtained.

(TB + TC + TE) × 1 / K + J × 2 = EE−SB (4)
Therefore, assuming that the standard processing time of the additional workpiece E is TE = 70 minutes and EE is the original processing completion time (610 minutes) in the step 3 of the workpiece E, the above formula is
(150 + 50 + 70) × 1 / K + 20 × 1 = 620-410
From
K = 27/19 ≒ 1.42
It becomes.

Therefore, when converted to processing time,
Work B process 3: 150 / 1.42 = 106 minutes Work C process 3: 50 / 1.42 = 36 minutes Work E process 3: 70 / 1.42 = 50 minutes. Although the upper limit value is within 50 minutes, the workpieces B and C are not within the upper limit value of 100 minutes and 40 minutes, respectively.

  For this reason, when the allocation change possibility determination unit 40 determines that the allocation is impossible again, the efficiency changing process designating unit 7c adds the work A to the process to be increased again, as shown in FIG. In the state of FIG. 26, when the efficiency change value calculation unit 49b calculates the up rate K of the workpieces A, B, C, and E to be increased in efficiency in the same manner as the above-described equations 1 to 4, the following is obtained.

(TA + TB + TC + TE) × 1 / K + J × 3 = EE−SA (5)
Therefore, if the standard processing time of the additional workpiece A is TA = 130 minutes and SA is the original processing start time (270 minutes) in the step 3 of the workpiece A, the above formula is
(130 + 150 + 50 + 70) × 1 / K + 10 × 3 = 620-270
From
K = 40/32 = 1.25
It becomes.

Therefore, when converted to processing time,
Work A process 3: 130 / 1.25 = 104 minutes Work B process 3: 150 / 1.25 = 120 minutes Work C process 3: 50 / 1.25 = 40 minutes Work E process 3: 70 / 1.25 = 56 minutes, and all workpieces A, B, C, and E are within the upper limit of 100 minutes, 110 minutes, 40 minutes, and 50 minutes.

  Accordingly, when the allocation change possibility determination unit 40 determines that the allocation is appropriate, the simulation unit 46a performs a simulation, and a Gantt chart display as shown in FIG. 26 in which the height is corrected by the chart height correction unit 51 is performed. In FIG. 26, the work times of the workpieces A, B, C and E in the step 3 are shortened by a ratio corresponding to the efficiency increase rate K (1.25 times), and the processing start time of the workpiece A and the workpiece E The processing of the workpiece C is inserted between the workpieces B and E without changing the processing completion time. As a result, as compared with FIG. 21, it is understood that the setup change between the workpieces D and C is eliminated without causing a delivery delay. Similarly to the above-described embodiments, the height of the rectangle corresponding to the work A, B, C, E of the process 3 in which the efficiency has been changed is higher than the other work (standard height). In addition, there is an effect that the portion exceeding the standard is displayed darkly, and it is easy to visually determine that the efficiency improvement is set.

  FIG. 27 is a flowchart for explaining a method for changing a work process as described above. Similar to the processing of FIG. 18, the corresponding steps are denoted by the same step numbers. 18 differs from the process of FIG. 18 in that, in step S12a instead of step S12 described above, the work process whose efficiency is to be changed receives the data in the allocation change data storage unit 48, and is automatically designated by the efficiency change process designation unit 7c. (Add) to do. In addition, as a result of the efficiency change value calculated in step S13a, the work process can be assigned with the change value in step S31, that is, the efficiency change value is equal to or less than the upper limit value stored in the efficiency change data storage unit 50. Whether or not there is allocation is determined by the allocation change permission determination unit 40. If the allocation cannot be performed, the process returns to the automatic designation (addition) of the efficiency changing process in step S12a.

  By configuring in this way, when moving the work time zone of a specific work, even if there is no free time that can process the specific work at the destination, and there is an upper limit of efficiency improvement for each work, By selecting adjacent work at the destination step by step and temporarily improving efficiency within the upper limit, complex schedule correction that eliminates setup change work and delivery delays can be performed quickly and easily. become able to.

1, 1a, 1b, 1c Process management device 2 Display unit 21 Display unit 22 Output interface 3 Input operation unit 31 Input unit 32 Input interface 4, 4a, 4b, 4c Process adjustment unit 40 Allocation change possibility determination unit 41 Process data Storage unit 42 Initial process creation unit 43 Efficiency change process specification unit 44 Efficiency specification unit 45, 45a Efficiency change data storage unit 46, 46a Simulation unit 47 Efficiency change process data storage unit 48 Allocation change data storage unit 49, 49b Efficiency change value calculation Section 50 Efficiency change upper limit data storage section 5 Gantt chart display data creation section 51 Chart height correction section 6 Work allocation change section 7, 7c Efficiency change process designation section

Claims (7)

In the device for managing the work process, each work process is displayed on the display means by a Gantt chart represented by a rectangular area with the work start time as the leading edge and the work end time as the trailing edge.
The efficiency in each work process is represented by the height of the rectangular area, and the Gantt chart display data creation unit that gives the display means ,
An input operation unit for accepting a change in the work process;
A work assignment changing unit that changes a work time zone of a work process whose change is accepted by the input operation unit with respect to a work process table created in advance,
With respect to a work process table created in advance, a work process in a predetermined range on at least one side before or after the work process accepted by the input operation unit is designated as a work process to be changed in efficiency. An efficiency change process designation section;
Work designated by the efficiency changing process designating part so as to maintain a predetermined process interval between the work processes when work is performed in the order of work processes assigned by the work assignment changing part. For the process, the working time of the rectangular area is expanded and contracted so that the area of the rectangular area becomes a certain amount of work necessary for the work process, and the efficiency is changed, and the work process is shifted, process management apparatus, characterized in that it comprises a step adjustment unit recreate the work process table after the change given to the Gantt chart display data producing unit. The process adjustment unit is
A process data storage unit for storing current work process data;
An efficiency change process data storage unit for storing the work process designated by the efficiency change process designation unit;
An assignment change data storage unit for storing the work assignment changed by the work assignment change unit;
When the efficiency change process data storage unit and the allocation change data storage unit are referred to and work is performed in the order of the work processes specified by the allocation change data, the area of the rectangular area of each work process is necessary for the work process. An efficiency change value calculation unit that changes the efficiency in the work process specified by the efficiency change process data so as to be a constant work amount and maintain a predetermined process interval;
An efficiency change data storage unit for storing efficiency change data obtained by the efficiency change value calculation unit;
A simulation unit that refers to the process data storage unit and the efficiency change data storage unit, re-creates the changed work process table that has shifted each work process, and stores it in the process data storage unit in the case of determination; ,
The Gantt chart display data creation unit refers to the efficiency change data storage unit, changes the height of the rectangular area according to the efficiency of the work process after the efficiency change, and gives the chart height to the display means process management apparatus according to claim 1, wherein the is provided with a correction unit. The chart height correction unit determines the height of the rectangular area after the change by multiplying the ratio of the efficiency value after the change to the efficiency value before the change by the height of the rectangular area before the change. The process management apparatus according to claim 2 . The efficiency change value calculation unit is configured to absorb the increase in the work process specified by the allocation change data while maintaining the time required for all work processes specified by the efficiency change process data to be constant. The process management apparatus according to claim 2, wherein: Further comprising an efficiency change upper limit data storage unit for storing an upper limit of an efficiency change amount in each work process;
The efficiency change value calculation unit calculates the efficiency after the change, and when the calculation result exceeds an upper limit value in the efficiency change upper limit data storage unit, the upper limit value is applied. 2. The process management apparatus according to 2 . The simulation unit, when an upper limit value is applied to the efficiency after the change by the efficiency change value calculation unit, by delaying the start and end time of the process after the work process, work table after the change The process management apparatus according to claim 5 , wherein the process management device is recreated. An efficiency change upper limit data storage unit for storing an upper limit of an efficiency change amount in each of the work steps;
If the efficiency calculated by the efficiency change value calculation unit exceeds the upper limit value, determine whether the efficiency change process can be assigned by the efficiency change process designation unit, and if the assignment is impossible, The process management apparatus according to claim 2 , further comprising an allocation change permission determination unit that causes the efficiency change process designating unit to add the efficiency change process.

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