JP2003029816A - Product production managing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the production adjustment of vehicles in a more satisfactory timing based on inventories on the circulating process and respective dealers of the vehicles of respective specifications. SOLUTION: A vehicle production database 50 is accessible by a vehicle production factory 70, selling store terminals 110, 120, and 130 set in each selling store, and a portable terminal 140 to be used by a salesman, and the producing situations and inventory situations of vehicles are stored for the respective specifications so as to be updateable as necessary in the vehicle production data base 50. The vehicle reproduction managing part 20 adjusts the number of production so that the number of inventory of the vehicles of the respective specifications can be turned into a prescribed number by referring to the vehicle production database 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product production management device for managing product production.

[0002]

2. Description of the Related Art Conventionally, a production plan for a product such as a vehicle (such as the number of vehicles produced for each specification) is prepared several months before the start of vehicle production based on market trends. Based on this production plan, vehicle production is underway at a vehicle production plant.

[0003]

For this reason, in the conventional vehicle production, the stock that fluctuates depending on the sales at the dealer is not taken into consideration, and the production management according to the actual situation is not performed in a timely manner. In addition, the inventory generated during the distribution process was not used in determining the number of vehicles produced. For this reason, when the vehicle sales forecast and the actual demand are different, an excess inventory or an inventory shortage has occurred at the dealership.

Therefore, an object of the present invention is to provide a product production management apparatus which can solve the above problems.

[0005]

[Means for Solving the Problems] That is, the present invention provides, for each specification of a product, the number of units in production at the product production factory, the distribution inventory in the distribution process from the product production factory to each sales shop, and the sales shop. Based on the inventory grasping means for acquiring the sales inventory without customers after arrival, and the production quantity for each specification based on at least one of the production quantity, distribution inventory and sales inventory of each specification And a production number management means for giving a production instruction to the product production factory.

The production quantity management means of the present invention presets a total target value as a target value of the total quantity obtained by summing the production quantity, the distribution inventory quantity, and the sales inventory quantity of each specification, and the total quantity becomes the total goal value. You may adjust the number of production so that it may become equal.

Further, the production quantity management means of the present invention presets the total stock quantity allowable range as a range in which the total stock quantity obtained by summing the distribution stock quantity and the sales stock quantity of each specification is allowed, and the total stock quantity is set. The number of units produced may be adjusted so that the number is within the allowable range of the total inventory.

The inventory grasping means of the present invention further comprises means for classifying the inventory quantity for each specification at the store into a short-term inventory quantity, a medium-term inventory quantity, and a long-term inventory quantity for each predetermined period. Sets the medium-term inventory allowable range and the long-term inventory allowable range in advance as the allowable ranges for the medium-term inventory quantity and long-term inventory quantity of each specification, respectively, and when the long-term inventory quantity exceeds the long-term inventory tolerance range, , Decrease the number of production units so that the long-term inventory quantity falls within the long-term inventory tolerance range, and if the medium-term inventory quantity falls below the medium-term inventory tolerance range, produce it so that the medium-term inventory quantity falls within the medium-term inventory tolerance range. You may increase the number.

Further, the production quantity management means of the present invention is, for the total inventory quantity obtained by summing the distribution inventory quantity and the sales inventory quantity of each specification, the deviation of the total inventory quantity, the variation amount of the deviation of the total inventory quantity, and the total inventory quantity. Feedback adjustment of the number of units produced may be performed based on the cumulative value of the deviation of the number of stocks.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described through embodiments of the invention.

FIG. 1 is a block diagram showing the configuration of a vehicle production management device 10 according to the embodiment. The vehicle production management device 10 includes a vehicle production management unit 20 and a vehicle incidental information reception unit 3
0, vehicle incidental information writing unit 40, production vehicle database 5
0, and the vehicle accompanying information output unit 60.

The vehicle production management unit 20 refers to a production vehicle database 50, which will be described later, and determines the vehicle production factory 70 in accordance with the inventory situation occurring in the distribution process and the inventory situation at the dealer.
In association with the ID for identifying the vehicle, an instruction regarding the specifications of the vehicle to be produced (vehicle type, color, grade, etc.) and production start date is sent. In addition to these pieces of information, the vehicle production management unit 20 determines in which shop the vehicle will be handled and writes it in the production vehicle database 50. A method of managing vehicle production by the vehicle production management unit 20 will be described later.

In the present embodiment, vehicle production (prospect production) is carried out in a state where customers who are scheduled to purchase are not decided. However, after shipment at the vehicle production factory 70, vehicles that are not scheduled to be purchased are attached. Is considered "inventory". That is, during the production of the vehicle production factory 70,
The process of distribution from to each store, and vehicles with customers after arriving at the store are not considered "inventory".

The vehicle incidental information receiving unit 30 receives a factory shipment date indicating the date when the vehicle was shipped from the factory in association with the vehicle ID from the vehicle production factory 70. Further, the vehicle incidental information receiving unit 30 associates the vehicle IDs with the dealer terminals 110, 120, 130 installed at the dealers X, Y, Z and the portable terminal 140 used by the salesman of each dealer. , A customer arrival date indicating the date when the vehicle arrives at the dealer, the presence or absence of a customer who plans to purchase the vehicle, and a customer acquisition date indicating the date when the customer who intends to purchase the vehicle is acquired. In the following, information about the vehicle such as specifications, production start date, factory shipment date, store arrival date, presence / absence of customers, customer acquisition date, etc. will be referred to as vehicle accompanying information.

The vehicle incidental information writing unit 40 writes the vehicle incidental information received by the vehicle incidental information receiving unit 30 into the production vehicle database 50.

The production vehicle database 50 has a vehicle associated information table 200 which stores the vehicle ID of each vehicle and the vehicle associated information in association with each other. In addition, the production vehicle database 50 has a specification-specific inventory table 210 that summarizes the expected production number (the number of vehicles being produced in the vehicle production factory 70) and the inventory number for each specification. The specification-specific inventory table 210 is a table created based on the vehicle-accompanying information table 200.
When 0 is updated, the specification-specific inventory table 210 is also automatically updated.

The vehicle-accompanying information output unit 60 is used by the store terminal 1
In response to requests from 10, 120, 130 and the mobile terminal 140, the vehicle accompanying information stored in the production vehicle database 50 is output.

FIG. 2 shows an example of the vehicle accompanying information table 200. The vehicle incidental information table 200 associates each vehicle ID with the presence or absence of a customer, the date of customer acquisition, the date of production start, the date of factory shipment, the shop ID for identifying the shop, the shop arrival date, and the specification. It is stored.

FIG. 3 shows an example of the specification-specific inventory table 210. Specification-Specific Inventory Table 210 For each specification, a store ID, an estimated production quantity, a total inventory quantity, a distribution inventory, a sales inventory (short term), a sales inventory (medium term), and a sales inventory (long term) are stored in association with each other. ing.

Here, the estimated production quantity is obtained by tabulating the specifications-specific inventory table 210 for each specification of cases such as a vehicle ID (= 5) that has been production-started but not yet shipped. . However, vehicles with customers after the start of production and before shipment are excluded from the estimated production volume.

The distribution inventory quantity refers to the number of vehicles shipped from the factory that have not arrived at the store. Sales inventory (short term) means that the period during which no customers who plan to purchase the vehicle have been acquired is 10 days from the date of arrival at the store.
When less than a day. The sales inventory (middle term) refers to the case where the period in which no customer who intends to purchase the vehicle has been acquired is 10 days or more and less than 1 month from the date of arrival at the store. The sales inventory (long-term) refers to a case where a period in which a customer who intends to purchase a vehicle is not acquired is one month or more from the date of arrival at the shop. That is, there is a relationship of total inventory number = distribution inventory number + sales inventory (short term) + sales inventory (medium term) + sales inventory (long term).

Next, the adjustment of the number of vehicles produced by the vehicle production management unit 20 will be described. There are the following four modes for adjusting the number of vehicles produced, and the vehicle production management unit 20 may use any one of the four modes. As in the adjustments 3 and 4 above, a plurality of combinations may be combined.

[Production Unit Adjustment 1] FIG. 4 exemplifies the production unit adjustment 1. The vehicle production management unit 20 presets a total target value of the expected production number and the total inventory number (specification vehicle number target value) for each specification and stores it in a memory (not shown). The vehicle production management unit 20 regularly stores the specification-specific inventory table 210 included in the production vehicle database 50.
, The expected production volume of each specification at that time,
And get the total inventory. The example of FIG. 4 shows a case in which the total of the estimated production volume and the total inventory volume is less than the specification-specific vehicle volume target value stored in the memory. In this case, the number of vehicles having the specifications is increased (the expected number of vehicles to be produced is increased) by the number of vehicles that meet the shortfall. vice versa,
If the total of the estimated production quantity and the total inventory quantity exceeds the vehicle quantity target value for each specification, the production of the vehicle of the specification is temporarily stopped.

According to this, after the start of production and after the arrival at the store, the number of vehicles without a customer is grasped for each specification, and this number is promptly adjusted to be equal to the target value set for each specification. It can be maintained at the same level and can prevent shortages and overstocks.

[Adjustment 2 of Production Number] FIG. 5 exemplifies Adjustment 2 of the production number. The vehicle production management unit 20 presets the permissible range of the total inventory quantity for each specification and stores it in the memory. The vehicle production management unit 20 periodically refers to the specification-specific inventory table 210, and acquires the total inventory quantity of each specification at that time. If the total number of acquired inventory is within the allowable range, the current production pace will be maintained. If the total inventory quantity obtained is less than the lower limit of the allowable range stored in memory,
The production of vehicles with that specification will increase. If the total number of stocks acquired exceeds the upper limit of the allowable range, the production of vehicles with that specification is reduced so that the excess amount is reduced.

According to this, the estimated production quantity of the vehicle of each specification is adjusted in a timely manner based on the distribution process and the stock quantity (total stock quantity) at the dealer, and the total stock quantity is maintained within a predetermined range. It is possible to prevent shortage and overstock.

[Adjustment 3 of the number of production] FIG. 6 and FIG.
The adjustment 3 of the number of produced vehicles will be illustrated. The vehicle production management unit 20
For each specification, an allowable range is set in advance for the number of sales stock (medium term) and the number of sales stock (long term), and is stored in the memory. The vehicle production management unit 20 periodically refers to the specification-specific inventory table 210 and acquires the sales inventory quantity (middle term) and the sales inventory quantity (long term) for each specification at that time. First, in FIG. 6, when the number of sold inventory (long term) exceeds the allowable range stored in the memory, the vehicle of the specification is reduced so that the excess amount is reduced. If the sales inventory quantity (long term) is within the allowable range stored in the memory, the process proceeds to FIG. 7. If the sales inventory (mid-term) is within the tolerance set for the sales inventory (mid-term),
The current production pace is maintained. On the other hand, if the number of sales inventory (middle term) is below the allowable range, the production of vehicles with that specification will be increased.

According to this, only when the number of long-term stocked vehicles for which the inventory period is longer than a certain period of time increases, the estimated production quantity is reduced, and when the number of stocked vehicles before the long-term stock decreases, it is determined that the appropriate stock is insufficient. In view of this, by increasing the number of vehicles to be produced, it is possible to adjust the number of vehicles to be produced in a more detailed and timely manner.

[Adjustment 4 of the number of vehicles produced] Normally, it takes a few weeks for production and distribution from production of a vehicle production plan to actual sale of the vehicle, resulting in a gap of a few weeks. Therefore, the vehicle production management unit 20 considers the degree of increase and the degree of decrease of the stock vehicles, and determines the PID (Proportion Integ
ration Differentiation) Apply the concept of feedback control to adjust vehicle production. That is, the vehicle production management unit 20 determines, based on the deviation of the total inventory quantity of each specification, the cumulative value of the deviation of the total inventory quantity, and the change amount of the deviation of the total inventory quantity,
Adjust the estimated production volume.

FIG. 8 shows the PID in the production quantity adjustment 4.
An application example of feedback control will be shown. For a certain specification, the total number of units in stock at T1 and T2 is S1 and S2.
And In this case, the change amount of the deviation of the total inventory amount (S2
-S1) / (T2-T1) becomes dominant, and (S2-S
1) / (T2-T1), the estimated production volume is adjusted. As a result, the production quantity can be adjusted based on a slight change in the total inventory quantity.

The control method of vehicle production in this embodiment has been described above. Next, other features of this embodiment will be described.

Usually, the sales situation of vehicles changes from moment to moment. In the present embodiment, the salesman of each store uses the mobile terminal 140 to appropriately produce the production vehicle database 5
0 is accessible and the customer is on the vehicle,
The production vehicle database 50 can be updated in real time. Therefore, the specifications and the number of stock vehicles that the customer does not have are updated at any time, and as a result, the production vehicle database 50 stores the latest information at that time.

Therefore, by releasing the information stored in the production vehicle database 50 to each dealer, for example, when a vehicle having a certain specification is overstocked at the dealer X,
When the dealer Y has a shortage of stock, the vehicle of the specification can be transferred from the dealer X to the dealer Y to manage the stock vehicle flexibly.

[0034]

As is apparent from the above description, according to the present invention, it is possible to adjust the production of the vehicle in a more timely manner based on the distribution process of the vehicle of each specification and the stock at each dealer.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle production management device 10 according to an embodiment.

FIG. 2 is a diagram showing an example of a vehicle accompanying information table 200.

FIG. 3 is a diagram showing an example of a specification-specific inventory table 210.

FIG. 4 is a diagram exemplifying production adjustment based on specification-specific vehicle number target values in production number adjustment 1;

FIG. 5 illustrates the production adjustment based on the total inventory quantity in the production quantity adjustment 2.

[Fig. 6] Sales inventory (long-term) for production volume adjustment 3
It is a figure which illustrates the production adjustment based on.

[Fig. 7] Sales inventory (Mid-term) for production volume adjustment 3
It is a figure which illustrates the production adjustment based on.

FIG. 8 is a diagram showing an application example of PID feedback control in adjusting the number of manufactured vehicles 4.

[Explanation of symbols]

10 vehicle production control device, 20 vehicle production control section, 30
Vehicle incidental information reception unit, 40 Vehicle incidental information writing unit, 5
0 production vehicle database, 60 vehicle incidental information output unit, 70 vehicle production factory, 110, 120, 130 dealer terminal, 140 mobile terminal, 200 vehicle incidental information table, 210 inventory table by specification.

Claims (5)

[Claims] 1. The number of products in production at a product production factory, distribution inventory in the distribution process from the product production factory to each sales outlet, and sales without customers after arrival at the sales outlet for each product specification Based on the inventory grasping means for acquiring the inventory and at least one of the production quantity, distribution inventory, and sales inventory of each specification, the production quantity is set for each specification, and the production instruction for each specification is given to the product production factory. A product production management apparatus comprising: a production number management means for performing. 2. The production quantity management means presets a total target value as a target value of the total quantity obtained by summing the production quantity, the distribution inventory quantity, and the sales inventory quantity of each specification, and the total quantity is equal to the total goal value. The product production management apparatus according to claim 1, wherein the number of production units is adjusted so that 3. The production quantity management means presets a total stock quantity allowable range as a range in which the total stock quantity obtained by summing the distribution stock quantity and the sales stock quantity of each specification is allowed, and the total stock quantity is the total stock quantity. The product production management apparatus according to claim 1, wherein the number of production units is adjusted so that the production number is within an allowable range. 4. The inventory grasping means further comprises means for classifying the inventory quantity for each specification at the dealer into a short-term inventory quantity, a medium-term inventory quantity, and a long-term inventory quantity for each predetermined period, and the production quantity management means is , For each of the medium-term inventory quantity and long-term inventory quantity of each specification, the medium-term inventory tolerance range and the long-term inventory tolerance range are preset as allowable ranges, and if the long-term inventory quantity exceeds the long-term inventory tolerance range, If the number of long-term inventory falls within the long-term inventory tolerance range, the number of production units is reduced, and if the medium-term inventory quantity falls below the medium-term inventory tolerance range, the production volume is adjusted so that the medium-term inventory quantity falls within the medium-term inventory tolerance range. The product production management apparatus according to claim 1, wherein 5. The production quantity management means calculates the deviation of the total inventory quantity, the variation of the deviation of the total inventory quantity, and the total inventory quantity of the total inventory quantity obtained by summing the distribution inventory quantity and the sales inventory quantity of each specification. The product production management apparatus according to claim 1, wherein feedback adjustment of the number of manufactured units is performed based on the accumulated value of the deviations.