JP2012242950A - Work priority setting method and work priority setting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a repair work priority of an object to be repaired, which has been removed from a manufacturing line to be repaired for correction, in consideration of the degree of influence of the delay time.SOLUTION: Repair work priorities of vehicles to be repaired, which are waiting for repair, are set (S7) in the descending order of delay estimated times F(k) at the time of return to the line of stock vehicles, which are differences between line return estimated time E(k) and initial production progress planning times D(k). In this case, line return estimated times E(k) of vehicles to be repaired, which are waiting for repair, at the time of setting or updating repair work priorities of the vehicles to be repaired are properly recognized in accordance with repair start estimated times (i) and repair work lead times (ii) of respective vehicles to be repaired. Work priorities are set (S702 to S712) regardless of the order of removal times of vehicles so as to raise the work priority of a vehicle to be repaired, by which the occurrence of a long delay time is estimated.

Description

  The present invention relates to a work priority order setting method and a work priority order setting device.

  For example, when a defect occurs in the quality confirmation process of the production line of the vehicle production factory, the operation is performed to remove the manufactured product from the production line and repair it according to the degree of the defect. In this description, in order to perform this repair work, unloading the manufactured product from the production line is referred to as “getting off”, and the off-line process for repairing is referred to as “getting off process” in this description. The dismounting process is carried out in any stage of the production line of the parts production line, sub-assembly line, and final assembly line of the vehicle (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2003-256023

By the way, the repair work lead time (required time) performed in the getting-off process is not assumed at the beginning of the vehicle production start. For this reason, the repair work lead time is treated as an inevitable “delay time” with respect to the scheduled vehicle completion date and time calculated at the start of production. However, the occurrence of the delay time affects not only the post-process of the production line but also various operations after the product shipment, leading to a delay in the delivery date of the finished product. In addition, since the repair work is ambiguous, the lead time of the repair work varies, and there are cases where a significant delay time occurs.
The present invention has been made in view of the above problems, and its purpose is to repair in consideration of the degree of influence of the delay time of the repair target product dropped from the production line for repair repair By setting the priority order of work, it is to avoid occurrence of a significant delay time.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

  (1) When setting or updating the priority order of repair work for the product to be repaired from the production line, the expected time to return each line of the repair target product waiting for repair, the expected repair start time, and the repair work for each repair target product A work priority order setting method for determining a repair work priority order for each repair target product in descending order of the difference between the estimated line return time and the initial production progress plan time.

  In the work priority order setting method described in this section, when there are many repair target products waiting for repair, the repair target products are ordered in descending order of the difference between the estimated line return time and the initial planned production progress time. Set the priority order of repair work. In addition, from the estimated repair start time and the repair work lead time of each product to be repaired, the expected line return time of the repair target product waiting to be repaired at the time of setting or updating the priority order of repair work for the repair target product To grasp. Then, the work priority order is set so as to increase the priority order of the repair target products that are expected to generate a significant delay time without being limited to the order of the disembarking time.

(2) In the above item (1), a work priority order setting method in which the repair work priority order for each repair target product is changed in consideration of the production completion priority information (claim 2).
The work priority order setting method described in this section considers the production completion priority information, for example, the circumstances of the destination of the product and the presence or absence of a contract, by replacing the repair work priority order for each repair target product, The priority order of work for repaired products according to the actual situation is determined.

(3) In the above items (1) and (2), the expected repair start time is the work of the repair target product that has already started work by a plurality of workers when the priority order of repair work for the repair target product is set or updated. A work priority order setting method in which the earliest work completion time among the completion times is selected.
In the work priority order setting method described in this section, when obtaining the expected return time of each line of the repair target product that is waiting for repair, there are a plurality of times as a reference time for the start time of the repair work lead time of each repair target product. The earliest work completion time is selected from the work completion times of the repair target products that the worker has already started. That is, the estimated line return time is obtained on the premise that the next work is started immediately after the work that has been started is completed.

(4) In the above item (3), the work priority order setting method in which the worker's ability related to the earliest work completion time is considered.
The work priority order setting method described in this section is used when the worker who has the earliest work completion time has high skills that can handle heavy work regardless of the repair work of the product that is waiting for repair. In this case, the work completion time of the worker is selected as the start time of the repair work lead time for each repair target product. On the other hand, if the worker who has the earliest work completion time has only the functions that can handle only light work, the repair target product will be given priority to the worker who has high skills, giving priority to the earliest work completion time. Select the start time of the repair work lead time.

(5) In the above items (1) to (4), the work priority order setting method in which worker's ability is considered in the repair work lead time.
The work priority order setting method described in this section shall appropriately correct the actual repair work lead time required for repair work on the repair target product in accordance with the worker's ability related to the earliest work completion time. Therefore, the priority order of work for the repair target product according to the actual situation is determined.

(6) In the above items (3) and (4), the work priority order setting method in which the on-hold information of the repair target product is considered.
The work priority order setting method described in this section is based on the actual situation by removing the on-hold information of the repair target product, that is, on the repair target product that has been put on hold for some reason, from the priority order review. The priority order of work for repaired products is determined.

  (7) Defect information management means for repaired products taken down from the production line, and the expected return time of each line of repair-targeted products from the repair start time and repair work lead time of each repair-targeted product A work priority order setting device including work priority order setting means for setting a priority order of repair work for each repair target product in descending order of the difference between the estimated time of line return and the initial production progress plan time. 3).

  The work priority order setting device described in this section manages defect information of each repair target product by the defect information management means of the repair target product. The defect information includes, for example, repair contents according to the defect contents of each repair target product, repair work lead time according to the repair contents, a lead time model (pattern of actual work time and manual waiting time), and the like. Further, in the work priority order setting means, the estimated return time of each line of the repair target product waiting for repair is obtained from the expected repair start time and the repair work lead time of each repair target product. Then, the order of priority of repair work for each repair target product is set in the descending order of the difference between the estimated line return time and the initial production progress plan time. At this time, based on the estimated repair start time and the repair work lead time of each repair target product, the expected line return time for each repair target product waiting for repair at the time of setting or updating the priority order of repair work for the repair target product To grasp. As a result, the work priority order is set so as to increase the priority order of the repair target product that is expected to generate a significant delay time without being limited to the order of the getting off time.

  (8) In the above item (7), the apparatus includes production completion priority information management means for managing production completion priority information for each repair target product, and the repair work priority order setting means for repair work priority order for each repair target product A work priority order setting device that switches the repair work priority order for each repair target product in consideration of the production completion priority information managed by the production completion priority information management means.

  In the work priority order setting device described in this section, the production completion priority information management means manages production completion priority information of each repair target product, for example, the circumstances of the destination of the product and the presence or absence of a contract. Then, when setting the repair work priority order for each repair target product in the repair work priority order setting means, the repair for each repair target product is considered in consideration of the production completion priority information managed by the production completion priority information management means. Change work priority order. Thereby, the work priority order of the repair object according to the actual situation is determined.

  Since the present invention is configured as described above, it becomes possible to set the priority order of repair work in consideration of the degree of the influence of the delay time of the repair target product dropped from the production line for repair repair. It is possible to avoid the occurrence of a long delay time.

It is a block diagram which shows the structure of the work priority order setting apparatus which concerns on embodiment of this invention. It is a flowchart which shows the work priority order setting method in the work priority order setting apparatus which concerns on embodiment of this invention. In the work priority order setting method according to an embodiment of the present invention, the work priority order is set by obtaining each line return expected time of the repair target vehicle from the expected repair start time and the repair work lead time of each repair target vehicle. It is explanatory drawing which shows the reason to do. FIG. 5 is a diagram specifically illustrating a work priority order setting method in the work priority order setting device according to the embodiment of the present invention, and is a diagram specifically illustrating a dismounting process. It is explanatory drawing which shows the breakdown of repair work lead time in the setting procedure of the specific work order shown by FIGS. It is a figure which shows the repair work lead time of each repair object vehicle during the repair work of the getting-off process shown in FIG. 4 and waiting for repair work start. FIG. 7 is a diagram in which the estimated return time of each line of the repair target vehicle waiting to start repair work shown in FIG. 6 is obtained from the expected repair start time and the repair work lead time of each repair target vehicle, and the repair work priority order is set. is there. In the work priority order setting method concerning an embodiment of the invention, it is a flow chart which shows the procedure which replaces repair work priority order with respect to each repair object vehicle in consideration of production completion priority information.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 schematically shows a work priority order setting device 10 according to an embodiment of the present invention together with a production line. In the example shown in the figure, a plurality of lines are provided for a dismounting process 16 for repairing when a problem occurs in the quality confirmation process of the main line 14 through which the product 12 (in the example shown, an automobile body) flows. ing. Then, the work priority order setting device 10 sets the repair work priority order for the product to be repaired, for example, when a new repair target vehicle 127 gets off in the dismount process 16, each repair target in the dismount process 16. The priority order of work of the vehicle is set. In addition, the code | symbol P1 in FIG. 1 has shown the disembarkation point from the main line 14 to the disembarkation process 16, and the code | symbol P2 has shown the line return point from the disembarkation process 16 to the main line 14. FIG.

  The work priority order setting device 10 shown in FIG. 1 is a vehicle production instruction / progress management system composed of an electronic computing unit such as a computer and various interfaces with a person in charge of the work as a whole. Then, it includes defect information management means (defect information system) 22 for the repair target product and work priority order setting means 26 provided in the getting-off management system 24. As shown in the figure, the defect information management means 22 has a storage table for managing various kinds of defect information, and provides necessary defect information to the work priority order setting means 26 when creating the work priority order. . Each storage table and judgment subject included in the defect information system 22 and the getting-off management system 24 can be constructed as control logic of an electronic computing unit.

Further, the work priority order setting means 26 sets the expected return time (described later) of the repair target products 125, 126, 127 waiting for repair, the expected repair start time (described later), and the repair work lead of each repair target product. It is obtained from time (described later). Then, the order of priority for repair work is set for the repair target products 125, 126, and 127 waiting for repair in descending order of the difference between the estimated line return time and the initial production progress plan time. Further, the repair work priority order setting means 26 includes production completion priority information management means 28 for managing production completion priority information (described later) of each repair target product. When the repair work priority order setting unit 26 sets the repair work priority order for the repair target products 125, 126, and 127 that are waiting for repair, they are managed in the production completion priority information management unit (“priority condition” table) 28. The repair work priority order is changed in consideration of the production completion priority information.
The repair work priority order set by the work priority order setting means 26 is stored and managed by the getting-off stock vehicle-individual status information management means (table) 30 included in the getting-off management system 24. And it is notified to the worker engaged in the getting-off process 16 through various interfaces 32 such as a panel computer and a PDA terminal. The term “repair LT” in FIG. 1 is an abbreviation for repair work lead time. Also, the subject of each input and update operation via the interface in FIG. 1 is an inspector and a repairer. Note that the configuration of the work priority order setting device 10 in FIG. 1 is merely an example, and other configurations having the same function may be employed.

FIG. 2 shows a procedure for actually setting the work priority order in the work priority order setting means 26. The procedure will be described in detail below with reference to FIGS. 1 and 3 to 8 as appropriate. The overall flow is as follows.
S1: As illustrated in FIG. 1, when a new repair target vehicle 127 gets off at the getting-off process 16, that is, when a new stock vehicle 127 is generated at the getting-off process 16, the setting or updating work of the repair work priority order is performed. Be started.
S3: In the disembarking step 16, the completion of work (repair results, line return results) of the repair target vehicle that has undergone repair is input by the person in charge of the repair target vehicle via a panel computer, a PDA terminal, or the like. .
S5: The defect information management means 22 determines whether the repair contents corresponding to the defect contents of the new stock vehicle 127 are light repairs or heavy repairs. Information is provided to the work priority order setting means 26 together with necessary defect information.
S7: The work priority order setting means 26 considers whether the repair contents corresponding to the trouble contents of the new stock vehicle 127 are light repairs or heavy repairs, and the repair target products 125, 126 waiting for repair, For 127, the work priority order is set in the order of “estimated delay time”. In the present embodiment, the estimated delay time is obtained from the “expected repair start time” and the “repair work lead time” of each repair target product as will be described later.
S9: Further, the work priority order set means 26 corrects the work priority order set in step S7 in consideration of the constraint condition appropriately stored in the production completion priority information management means 28, for example, the production completion priority information. Then, the work priority order is changed as appropriate.
S11: The work priority order information is displayed on the interface 32.

Here, in the step of setting the work priority order in S7, the reason why the expected return time of each line of the repair target product waiting for repair is obtained from the expected repair start time and the repair work lead time of each repair target product is shown in FIG. This will be described with reference to FIG.
That is, as shown in Equation 1, in an arbitrary getting-off process, the estimated delay time C (k) at the time of completion of the stock vehicle k is the estimated vehicle completion time A (k) of the initial plan of the stock vehicle k. Is obtained by subtracting the expected vehicle completion time B (k) of the inventory vehicle k (after repair).
The planned vehicle completion time A (k) of the initial plan for the stock vehicle k is calculated from the sum of the vehicle production start time and the production lead time from the vehicle start point to the vehicle completion, as shown in Formula 2. , What you get.
Furthermore, as shown in Equation 3, the production lead time from the vehicle start point to the vehicle completion is the integrated value of the number of stocks of each process from the vehicle start point to the vehicle completion and the tact time of each process, The integrated value of the line non-operation time of each process during the period during which the target vehicle is passing is added.

Further, as shown in Equation 4, the vehicle completion expected time B (k) is calculated from the repair work start time (i), the repair work lead time (ii), and the line return point P2 (see FIG. 1). This is the sum of production lead time (iii) until vehicle completion.
Further, as shown in Formula 5, the line return expected time E (k) is a value obtained by reducing the vehicle completion expected time B (k) by the production lead time (iii) from the line return point P2 to the vehicle completion. In addition, this is also the sum of the repair start expected time (i) and the repair work lead time (ii).
Furthermore, as shown in Equation 6, the scheduled production progress time D (k) at the production progress management point P _C 1 (see FIG. 4) nearest to the disembarking point P1 (see FIG. 1) is the planned vehicle completion schedule. This is a value obtained by subtracting the time A (k) by the production lead time (iii) from the line return point P2 to the completion of the vehicle.

Here, as shown in Equation 7, the estimated delay time F (k) when the stock vehicle k returns to the line is the estimated production progress time D (k) of the production progress management point P _C 1 nearest to the getting-off point P1. That is, it is obtained from the difference between the initial production progress plan time and the line return expected time E (k) of the vehicle k. On the other hand, since both the values of D (k) and E (k) reduce the production lead time (iii) from the line return point P2 to the vehicle completion, D (k) −E (k) = A (K) −B (k), and F (k) = C (k) is established as shown in Equation (8).
Since the estimated delay time C (k) at the time of completion of the stock vehicle k does not change between when the line is returned and when the vehicle is completed, when setting the priority order of repair work for each repair target vehicle, the stock vehicle Arranging in the order of the expected delay time C (k) at the time of completion of the vehicle of k is in agreement with arranging in the order of the expected delay time F (k) when the stock vehicle k returns to the line.
Therefore, in the present embodiment, the expected delay time F (k) at the time of line return, that is, the initial production progress plan time D (k) of the production progress management point closest to the getting-off point P1, and the line return of the vehicle k. The order of priority of repair work for each of the repair target vehicles 125 to 127 is set in descending order of the difference from the expected time E (k).

Next, steps S702 to S712 related to the procedure for setting the work priority order in step S7 of FIG. 2 will be described in more detail.
For convenience of explanation, FIG. 4 shows specific condition settings. There are four vehicles 121, 122, 123, 124 to be repaired during the dismounting process 16 in the disembarking process 16, and among the persons in charge of each work, the functions of the persons in charge A, B, C are heavy work, Any light work is possible. On the other hand, the person in charge D can perform only light work. In the disembarking process 16, there are two repair target vehicles 125 and 126 waiting for repair as stock vehicles. Further, in the disembarking process 16, a new repair target product 127 has been disembarked and added to the stock vehicle. Show.

Here, the breakdown of the repair work lead time of each of the repair target vehicles 121 to 127 in the specific work order setting procedure shown in FIGS. 6 to 8 is schematically shown in FIG. The master information of the repair work lead time is provided from the “get off vehicle information” table of the defect information system 22 of FIG. 1 to the “repair LT” table of the work priority order setting means 26. The example in Fig. 5 is related to the painting line. As master information of repair work lead time, the failure content is "Large size", the getting off category (reason for getting off) "Repair repair", the repair content "Light color spraying (Large)", repair Work lead time 90min (breakdown: work time WoT = 30min, hand waiting time WeT = 60min) and lead time model (array pattern of actual work time and hand waiting time) schematically represented by a bar graph are included. ing. Furthermore, in the lead time model, the initial production progress plan time D (k) of the production progress management point P _C 1 (see FIG. 4) closest to the getting-off point P1 is circled, and the progress management immediately after the line return point P2 at the point P _{C 2} (see Fig. 4) shows the initial compliance limit time in crosses.
Of the repair work lead time, the work time WoT can be appropriately revised and updated via the interface according to the skill of the worker (see “Repair LT Update” in FIG. 1).

Hereafter, each step S702-S712 of FIG. 2 is demonstrated later on.
S702: Select the earliest time (i) among the work completion times of the vehicles that have already begun repairs. Assuming that the time when the new repair target product 127 got off at the disembarking process 16 was 6:00 as shown in FIG. 4, at this point, in the example of FIG. 6, in the example of FIG. Among 122, 123, and 124, the work completion time of the repair target vehicle 122 is the earliest at 7:00. Therefore, 7:00 is the earliest time (i).
S704: The person in charge B of the vehicle 122 related to the earliest time (i) selected in step S702 starts work next among any of the three repair target vehicles 125 to 127 waiting for repair. Determined as the person in charge of the vehicle.
S706: Time (i) is the expected work start time of the vehicle to be started next among any of the three repair target vehicles 125 to 127 that are waiting to be repaired (Formula 4 and Formula 5 in FIG. 3). (See formula).

S708: When there is a vehicle that has been put on hold among the repair target vehicles 125 to 127 that are waiting for work at time (i), the vehicle is excluded from the determination of the work priority order. Also, if the person in charge B needs repair work, the vehicle is excluded. In the example shown in the figure, the person B can perform either heavy work or light work, so no vehicle is excluded in this respect. Then, the repair work lead time of the repair target vehicles 125 to 127 shown in FIG. 6 is added to the time (i), and the line return expected time E (k) of each vehicle is calculated. The repair work lead times of the repair target vehicles 125 to 127 in FIG. 6 exemplify a case where there is no stock vehicle in the getting-off process 16 and repair is possible immediately after getting off.
S710: As shown in FIG. 7, the planned production progress time D (k) at the production progress management point Pc1 (see FIG. 4) immediately after getting off the repair target vehicles 125 to 127 waiting for work and the repair A delay expected time F (k) at the time of line return, which is a difference from the line return expected time E (k) of the target vehicles 125 to 127, is calculated. Then, the work priority order is set in descending order. In the example of FIG. 7, F (k) = + 1 (time h) of the vehicle 125, F (k) = ± 0 (time h) of the vehicle 126, and F (k) = + 2 (time h) of the vehicle 127. . Therefore, the work priority order is the vehicle 127 first, the vehicle 125 second, and the vehicle 126 third.
S712: The vehicle 127 in which the priority order is ranked first in step S710 is provisionally determined as the vehicle in which the person in charge B starts the repair work next.

Next, specific steps S902 and S904 for correcting the repair work priority order in consideration of the constraint conditions in step S9 in FIG. 2 will be described in detail with reference to FIG.
S902: In the work priority order setting means 26, in the “priority condition” table, for any of the repair target vehicles 125 to 127 that are waiting for repair, the production completion priority information (constrained vehicle, specific destination vehicle, etc.) Whether or not (condition) is stored. The repair completion expected time E (k) of the vehicle (for example, the vehicle 125) in which the production completion priority information is stored exceeds the initial compliance limit time of the next progress management point Pc2 (see FIG. 4). In this case, the work priority order of the vehicle is advanced within a range not overtaking a vehicle having a higher priority order than the own vehicle (for example, the vehicle 125).
S904: In step S902, the work priority order of the vehicle after the production completion priority information is taken into account is determined as the formal work priority order.

FIG. 8 shows the priority order correction work performed in step S902 more specifically.
S902-1: If the vehicle to be examined is the vehicle with the lowest priority order (for example, the vehicle 126 in FIG. 7) among the orders temporarily determined in step S712 (Yes), the process proceeds to step S904. Transition.
S902-2: In step S902-1, when the vehicle to be examined is not the last vehicle in the priority order (for example, the vehicle 125 in FIG. 7) (No), (temporary) priority order at this time Is recorded in the getting-off stock vehicle-individual status information management means 30 of the getting-off management system 24.
S902-3: In the priority order recorded in S902-2, the line return expected time E (k) of the vehicle to be examined (for example, the vehicle 125) exceeds the compliance limit time determined by the constraint condition. Consider whether or not. If the compliance limit time has not been exceeded (No), the process proceeds to step S902-8. On the other hand, when the line return expected time E (k) of the vehicle to be examined (for example, the vehicle 125) exceeds the compliance limit time determined by the constraint condition (Yes), the process proceeds to S902-4. To do.

S902-4: Whether or not there is a priority item defined by the constraint condition in the vehicle (for example, the vehicle 127) whose priority order temporarily determined is higher than that of the vehicle to be examined (for example, the vehicle 125). consider. If there is no priority item (No), the process proceeds to step S902-6. On the other hand, if there is a priority item (Yes), the process proceeds to step S902-5.
S902-5: Examining whether or not the priority of the priority item of the vehicle (for example, the vehicle 127) whose priority order temporarily determined is one higher than that of the vehicle to be studied (for example, the vehicle 125) is higher. To do. If the priority is high (Yes), the process proceeds to step S902-7. On the other hand, if the priority is not high, the process proceeds to step S902-6.
S902-6: The priority order of the vehicle to be studied (for example, the vehicle 125) and the vehicle (for example, the vehicle 127) whose tentatively determined priority order is one higher are switched.
If applied to the example of FIG. 7, the vehicle 125 is moved up from the second priority order to the first position, and the vehicle 127 is moved down from the first priority order to the second position. Then, the process returns to step S902-3.
S902-7: As a result of changing the priority order, the vehicle (for example, the vehicle 127) whose priority order is one lower than the vehicle to be examined (for example, the vehicle 125) exceeds the compliance limit time defined by the constraint condition. Consider whether or not. Here, when the vehicle whose priority order is one lower than the compliance limit time determined by the constraint condition (Yes), the process proceeds to step S902-8. On the other hand, if the vehicle whose priority order is one lower (for example, the vehicle 127) does not exceed the compliance limit time determined by the constraint condition (No), the process proceeds to step S902-6 (the priority order is changed). Maintain state).
S902-8: In step S902-7, when a vehicle with a lower priority order (for example, vehicle 127) exceeds the compliance limit time determined by the constraint condition, the priority order is not changed. The process proceeds to step S902-9.
S902-9: The work priority order of the vehicle to be examined (for example, the vehicle 126) is confirmed, the process returns to step S902-1, and the same examination is performed for another vehicle.

  Now, according to the embodiment of the present invention configured as described above, the following operational effects can be obtained. That is, according to the embodiment of the present invention, when there are many repair target vehicles 125 to 127 waiting for repair, the line return expected time E (k) and the initial production progress planned time D (k) The order of priority of repair work for each of the repair target vehicles 125 to 127 is set in the descending order of the estimated delay time F (k) when the stock vehicle returns to the line, which is the difference (S7). Moreover, the repair work priority order for the repair target vehicles 125 to 127 is set or updated (6:00) from the expected repair start time (i) and the repair work lead times (ii) of the repair target vehicles 125 to 127. Thus, the line return expected time E (k) of the repair target vehicles 125 to 127 waiting for repair is appropriately grasped. Then, the work priority order is set so as to increase the work priority order of the vehicle to be repaired, which is not limited to the order of the disembarking time but is expected to generate a significant delay time (S702 to S712).

  In addition, in consideration of the production completion priority information, for example, the situation of the destination of the product and the presence or absence of the contract, the priority order of the repair work for each repair target vehicle 125 to 127 is changed (S9), depending on the actual situation. In addition, it is possible to determine the work priority order of the repair target vehicles 125 to 127.

  In addition, when obtaining the expected line return times E (k) of the repair target vehicles 125 to 127 waiting for repair, the time used as a reference for the start time of the repair work lead time (ii) of the repair target vehicles 125 to 127 Among the work completion times of the repair target vehicles 121 to 124 that have already started work by a plurality of workers A to D, the earliest work completion time (7:00) is selected. That is, the estimated line return time E (k) is obtained on the premise that the next work is started immediately after the work already started on the repair target vehicle 122 is completed. And, it is possible to efficiently start the repair work of the next repair target vehicles 125 to 127 without causing a waiting time for the worker B related to the earliest work completion time (7:00). It is possible to set a work priority order without waste.

  Furthermore, if the worker B related to the earliest work completion time has a high capability capable of handling heavy work regardless of the repair work of the repair target vehicles 125 to 127 waiting for repair, The work completion time (7:00) of the person in charge B is selected as the start time of the repair work lead time (ii) of each of the repair target vehicles 125 to 127 (S702 to S708). On the other hand, when the worker associated with the earliest work completion time has only the ability to handle only light work (for example, the person in charge D), The work completion time is prioritized and selected as the start time of the repair work lead time (ii) of each repair target product. As a result, it is possible to prevent the occurrence of assignments that are ineligible for job functions.

In addition, according to the function of the worker B related to the earliest work completion time, the actual repair work lead time (ii) required for repair work of the repair target vehicles 125 to 127 waiting for repair (of the repair work lead time) By appropriately modifying the work time WoT), the work priority order of the repair target vehicles 125 to 127 according to the actual situation can be determined. In addition, the on-hold information of the repair target vehicles 125 to 127, that is, the repair target vehicle that has been put on hold for some reason, is removed from the priority order examination target, and the work priority order of the repair target products according to the actual situation Can be determined.

  10: Work priority order setting device, 12: Manufactured product, 121, 122, 123, 124: Vehicle to be repaired during repair work, 125, 126, 127: Vehicle to be repaired waiting for repair, 14: Main line, 16: Get off Process: 22: Defect information management means, 24: Get off management system, 26: Work priority order setting means, 28: Production completion priority information management means, D (k): Initial production progress plan time, E (k): Line Expected return time, (ii): Repair work lead time

Claims (4)

When setting or updating the priority order of repair work for a product to be repaired that has been lowered from the production line, the expected time to return each line of the repair target product waiting for repair is calculated as the repair start time and the repair work lead time of each repair target product. The work priority order setting method is characterized in that a repair work priority order for each repair target product is set in descending order of the difference between the expected line return time and the initial production progress plan time. 2. The work priority order setting method according to claim 1, wherein the priority order of repair work for each repair target product is replaced in consideration of the production completion priority information. Defect information management means for repaired products taken down from the production line and each line return expected time of repair target products waiting for repair are obtained from the estimated repair start time and the repair work lead time of each repair target product. A work priority order setting device comprising work priority order setting means for setting a repair work priority order for each repair target product in descending order of the difference between the expected return time and the initial production progress plan time. Production completion priority information management means for managing production completion priority information of each repair target product, and when the repair work priority order setting means sets the repair work priority order for each repair target product, the production completion priority information 4. The work priority order setting device according to claim 3, wherein the priority order of repair work for each repair target product is replaced in consideration of the production completion priority information managed by the information management means.