JPH1080842A - Production plan preparing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To individually and delicately control plural products in time by preparing a production plane for individual products in relation to time in a day irrespective of the kinds of products in respective production processes may be single or plural. SOLUTION: A cargo delivery plan is prepared by a cargo delivery time determining means 40. A processing plan is prepared by a processing time determining means 42. This processing time determining means 42 is provided with a first processing time determining means 44 to determine processing time by being actuated when a production process to determine processing time is the final process among plural production processes and a second processing time determining means 46 to determine processing time by being actuated when it is a production process except it. A use plan is prepared by a use time determining means 48, and a stocking plan is prepared by a stocking time determining means 50. Therefore, a production plan can be delicately prepared in time for individual products.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for producing a plurality of products from a supplier, producing a plurality of products in order, and shipping the products to a destination. The present invention relates to a technique for automatically creating a production plan for producing each operation day.

[0002]

2. Description of the Related Art In the process of producing a product, production control has been conventionally performed in order to match the actual amount of production with the required amount. There is a need for an apparatus that automatically creates a production plan for daily production.

FIG. 25 shows an example of an automobile production process. In this automobile production process, a plurality of individual production processes are linked to each other, and FIG.
0, the self-process 202 and the post-process 204 are hierarchized. In the pre-process 200, a plurality of types of parts make up a plurality of types of parts constituting the engine of the vehicle, for example, cylinder blocks α, β, pistons α,
β etc. are produced. In the own process 202, a plurality of types of products, for example, engines a and b, are produced by assembling the parts purchased from the previous process 200 with each other through a plurality of types of assembling lines. In the post-process 204, the bodies A, B, etc. of the plurality of types of vehicles are assembled by the plurality of types of assembly lines, and the parts purchased from the own process 202 are attached to the assembled bodies A, B, etc. Can be Thereafter, the vehicle completed in step 204 is sold to a customer through a dealer 206. In this automobile production process, a production plan for each production process is created based on production requirements issued from a process immediately downstream of the production plan. This production request is for requesting production on a daily basis and for each shipping destination (for example, when the shipping destination is the post-process 204, it is for each assembly line,
If the shipping destination is the own process 202, it depends on the assembly line. ) And a product number is required for each product number. Further, the production plan is created in order from the post-process 204 to the pre-process 200, that is, in a direction opposite to the flow of the product. Prior to the present invention, the applicant has
A device for automatically creating a production plan has been developed. This development device, each production process as a plurality of stages, the purchase of each material of each product to be produced from the supplier, the use of each purchased material at a predetermined use position in each production process, As shown in FIG. 26, in the case where the mechanism for starting production of each product in each production process and the shipment of each completed product to the shipping destination are sequentially executed, as shown in FIG.
Immediately based on a production request from a downstream production process, a shipment plan creating means 300 for creating a shipment plan for shipping each product from each production process to a destination, and (b) each product based on the shipment plan. Plan creation means 302 for creating a setup plan for a setup to start producing in each production process, and (c) at least one material (one example of which is a part) constituting each product based on the setup plan. .) Is used in each production process, and (d) a purchase plan for preparing a purchase plan for supplying each material to each production process based on the use plan. And a plan creation unit 306. With the development apparatus configured as described above, in the post-process 204, as shown in FIG. 27 and FIG. 28, a shipping plan of the product A is created based on the order from the dealer 206, and the shipping plan is also determined. Then, a production plan for the product A is created in consideration of the production lead time of the product A in the step 204 (that is, the time from the start of the production of the product A to the completion of the product A). In the case where the product A is developed into at least one part a based on a device A plan (in the example of the figure, one part a is used for one product A). A usage plan for each part a is created, and based on the usage plan for each part a, for example, the number of parts a to be stored in one pallet at one time (in the example of the figure, it is one). ) And pallets for trucks, automatic guided vehicles, etc. In consideration of the number of units to be delivered at a time by one unit of delivery service of the sending means (in the example of the figure, there are two flights a day and two pallets are delivered for each delivery flight) A purchase plan is created. On the other hand, for the own process 202, as shown in the figure, each product a to be produced in the own process 202 (after process 2)
Since the parts are the same as those of the parts a in FIG. ) Is prepared, a device plan for each product a is prepared based on the product plan, and each product a is developed into at least one component α based on the device plan for each product a. Is created for each component α. This development device, as shown in FIG. 29, for example, divides the production plan created as described above into each production process (post-process or self-process) and each stage of each production process (shipping or process). Use or purchase), and output as the required number per day for each working day.

[0004]

In order to meet the demand for improving the production efficiency, a plurality of products must be individually and timely finely arranged in each stage of purchasing, using, setting and shipping in each production process. It is important to manage. However, this development device handles a plurality of products collectively for each product type, and collectively handles, for example, the number of products produced per day and the number of products transported per flight, on a "day" or "flight" basis. . That is, the development device
The production plan was created by associating multiple products with "numbers". For this reason, this development device cannot grasp information such as “when should the product be shipped?”, For example, and manages the state of each product in the shipment stage in a timely and detailed manner. There was a drawback that you could not. This disadvantage becomes a problem in the following cases, for example. For example, in the production plan, the total daily production number, which is the sum of all types of the individual daily production numbers, which are the daily production numbers of each type of product on each working day, is approximately equal across multiple working days. The production number for each individual day on each working day is adjusted. The so-called load adjustment is performed. However, the development equipment can handle multiple products collectively and only on a daily basis.
Since the temporal order such as the use order and the purchase order cannot be taken into account, the order in which a plurality of products are produced may be changed unexpectedly as a result of the load adjustment. For example, as shown in FIG. 30, when two types of products a and b are set in a certain production process, and product a is set first and product b is set later, in this original plan, The total number of devices per day on each operation day is a load adjustment target period (hereinafter, simply referred to as a “target period”) of the operation periods, such as “5”, “4”, “5”, and “8”. It is not even enough in one four days. In this case, in the development device, first, the total value of the total number of devices per day in the target period is divided by the number of working days, so that the total value is distributed almost equally on each working day. For example, the total value is “6”,
They are distributed as "5", "6" and "5". Then, for each working day, the total number of works per day after the change is the ratio of the total value of the total number of works per day for the products a and b in the target period to the total value of the total number of works per day in the target period. Distributed in. When the load adjustment is performed, the product b is performed before all the devices a are completed, and the product order cannot be maintained. This effect appears in the number of missing parts and the number of stocks for each of the products a and b. Specifically,
For the product a, when comparing the number of individual devices per day before and after the load adjustment, the value before the load adjustment is larger,
A total of three missing parts occur during the three days of the first to third working days. Conversely, for the product b, the value after the load adjustment becomes larger, and the first to third working days A total of six inventories occur in three days.

[0005] In the development device, when the load adjustment is performed in this manner, the temporal order of the products may be changed. In addition, as described above, the development device temporally stores a plurality of products individually. It cannot be handled finely. Therefore, in the development equipment, even if the time sequence of products is changed as a result of load adjustment and the production plan causes products whose delivery to later processes is delayed from the scheduled time, this fact is not considered. There is a problem that it cannot be reported to the user of the production plan creation device without being found.

The contents and problems of the basic processing of the development device have been described above.
Auxiliary processing includes advance delay compensation, production
Also performs sequence planning and progress management. Hereinafter, the contents and problems of these auxiliary processes will be described.

[0007] The "preceding delay correction" is performed in a self-process based on a command from a user (hereinafter, simply referred to as "user") of the production plan creation device when a plurality of types of products are set in the self-process. Correct the time when the product type changes so that it is earlier than the original time,
This is a process of correcting so as to be delayed from the original timing. For example, as shown in FIG. 31, when the two types of products a and b are set in that order in the own process as shown in FIG. This is performed in order to advance the set time of the product b in the own process for a certain time for a reason. In the example of the figure, the original plan is that only the product a is set on the first and second working days, and the product b is set on the third and fourth working days.
Only the type of product to be set when moving from the second working day to the third working day, the type of product to be set changes. On the other hand, the new plan advances the type change time by about half a day, All the products a are set in the middle of the working day, and then the product b is set. In the development device, when correcting the type change timing, first, the length of time in which the type change timing is to be advanced is converted into the number of products. Thereafter, the user designates a target period, which is a part of the operating period that allows the number of devices per day to be changed in order to change the type change time. Subsequently, the sum of the number of devices per day on each working day in a portion preceding the original type change time in the target period is increased by the number of converted products, while the original type change time in the target period is increased. The sum of the number of devices per day on each working day in the more delayed portion is reduced in the number of converted products. As a result, the type change timing is corrected to a timing preceding the original timing. However, in this development device, products are handled by number, and it is not possible to consider the product order, and therefore, as shown in FIG. Although it was a plan to be set up, after the advance delay correction, there was a problem that the plan was changed to a plan in which there was a time when products a and b were set up alternately, and the order in which the products were set up might be changed. .

[0008] "Production quota processing" is a process in which a production plan prepared in advance so that the delivery date for the post-process is kept irrespective of the production quota (for example, production capacity) of the production execution plan of the own process is converted into the production plan. This is a process for correcting the actual production state based on the production frame so as to fall within the production frame. For example, as shown in FIG. 32, the production stuffing process is performed by setting a work schedule of the products a and b, whose delivery times are predetermined, on the day before the working day when the working mode of the worker is due to the own process. Up to 2 shifts a day, but 1 day a day from the working day
This is done when you want to fit into the production frame of the execution plan that has been changed immediately. In this case, since the first and second working days are two shifts per day, the limit value of the number of production per day is 10, but the third and fourth working days are one shift per day. , The limit value of daily production is 5. In the development device, first, the user designates a target period in the operation period that allows the number of devices per day to be changed for the production quota process. It is calculated as 17, and similarly,
13 is calculated for the product b, and the sum of both is calculated to be 30. Subsequently, the ratio of the product a to the whole is 17
/ 30, the ratio of the product b to the whole is calculated to be 13/30, and then, according to the ratio of each product a, b, the limit production number is 10 for each of the first and second working days.
Individuals are distributed to products a and b, and as shown in FIG. Similarly, the third and fourth working days are similarly distributed, and as shown in the figure, on the third working day, four products are distributed to the product a and one product is distributed to the product b.
On the fourth working day, three products are distributed to the product a and two products are distributed to the product b. However, in this development device, the products are handled by the number, and it is not possible to consider the product mounting order. Therefore, as shown in the figure, there is a problem that the product mounting order is changed. As in the case of the product a in the above, there is a problem that the delivery date cannot be met and a shortage occurs.

[0009] "Sequence planning" means that the order in which a plurality of products are actually produced in the own process depends on the work capacity of the operator, the variation in the number of parts produced per unit time and the number of goods transported, and the production capacity of production equipment. To be optimized in relation to
This is a process of creating a plan for a product production order. In the development device, the products are handled by the numbers as described above, so that the order plan is created by the following target tracking method. That is, the appearance tendency value (appearance rate) indicating the possibility that each product of each type appears as a completed product at the i-th time on each working day is (number of products of each type / number of products of all types) × i- (the number of products of the same type that have appeared up to the previous time) is calculated using the formula
A work order is created for each product. Specifically, in the development device, for example, as shown in FIG. 33, three types of products a, b, and c are produced in a certain process, and five products a, three products b, When two c are produced, the appearance tendency value of the product a is calculated to be 5/10 and the appearance tendency value of the product b is 3/10 It is calculated, and the appearance tendency value of the product c is calculated as 2/10. The product a is selected at the first time because the largest one of the appearance tendency values is the appearance tendency value of the product a. At the second time, the appearance tendency value of product a is calculated as 5/10 × 2-1 = 0, the appearance tendency value of product b is calculated as 3/10 × 2 = 6/10, and product c Is calculated as 2/10 × 2 = 4/10, and the product b is selected the second time. At the third time, the appearance tendency value of the product a is calculated as 5/10 × 3-1 = 5/10, and the appearance tendency value of the product b is calculated as 3/10 × 3-1 = 1/10. Then, the appearance tendency value of the product c is calculated as 2/10 × 3 = 6/10, and the product c is selected the third time. Since then
Similarly, the appearance tendency value is sequentially calculated for each product,
The products having the highest appearance tendency value are selected in order, thereby determining the product setting order. However, in the fifth time, there are two products, a and b, having the maximum appearance tendency values. In this case, it is predetermined that a product different from the previously appeared product is given priority. After all, the product b is selected for the fifth time. However, in this development device, as described above, products are handled by number, and the time order of products is not determined at all before creating the order plan. Has to be determined, and many operations are required, and it takes a long time to create.

[0010] "Progress management" is a process of providing information necessary for the user to manage the progress of production of each product by acquiring the results of the production status in the own process and displaying it on the screen. . In the development device, the production results are also displayed on the screen in association with the numbers. For example, as shown in FIG.
When two types of products a and b are respectively produced in a certain production process, the number of stocks for each type of products a and b is displayed on the screen. However, in this development device, since products are handled by number as described above,
In the progress management, there is a problem that it is inconvenient for the user to be unable to recognize what state each product is actually in at what time of day in comparison with the production plan. For example, you know how many inventories are available for each product type, but when that inventory is in process, when it is assembled, when it is inspected, and when it is in stock Items, such as how long the inventory has been waiting to be shipped as inventory, and when is the expected shipping time, and inventory is inventory that was created by receiving orders from later processes. However, it is not possible to manage items such as whether they are safety stocks created due to the own process.

By the way, during the production of the production plan, the user
There is a case where various condition values that affect the production plan, such as production conditions such as a production lead time, conditions for advance delay correction, and the like are once set for the own process, and then it is desired to change them. In this case, the user causes the development device to create and output the output variable after the change, that is, the production plan, and based on the output result, the user determines whether or not the content of the change is appropriate. The user changes each condition value to a plurality of candidate values, determines whether the contents of the change are appropriate for each candidate value, and changes the production plan by trial and error by repeating such processing. However, in this development device, if the user issues a command to change various condition values, the user may not eventually adopt the changed various condition values, but the various condition values before the change are not adopted. Also, without saving the production plan before change, it is rewritten based on various condition values after change. That is, in this development device, as shown in FIG. 35, for example, when changing the tact time or the production lead time of the production conditions, the target period of the advance delay correction, or the number of increase / decrease of the number of products, the user inputs these various values. If a command to change the condition value is issued, the value before the change is not stored, but is rewritten to the value after the change. For this reason, this development device cannot store the value before the change, so if it is necessary to return to the value before the change, it may be forgotten, or there may be a mistake in the production plan due to human error such as mistake. There was a problem.

[0012] Against this background, an object of the present invention is to provide a production plan effective for individually and timely managing a plurality of products in each production process individually in each of the claims 1 to 4. It is an object of the present invention to provide an apparatus for creating, and for each of the inventions of claims 5 and 6, an apparatus for changing a production plan without changing the order of products in each production process. Is to improve the usability of the production plan creation device when changing the production plan. For each of the inventions according to claims 8 and 9, there is provided an apparatus for easily creating a sequence plan for product production. According to the tenth aspect of the present invention, there is provided an apparatus for outputting information for performing a production management individually and in a timely manner for a plurality of products. For the invention is to provide a medium having recorded thereon a computer program for operating them device.

[0013]

Means for Solving the Problems, Functions and Effects of the Invention
According to the invention of claim 1 of the present invention, in each of at least one production process of purchasing a plurality of materials from a supplier, sequentially producing a plurality of products, and shipping the products to a destination. An apparatus for creating a production plan for producing each of the products for each operation day, based on shipping conditions of each of the products when each of the products is shipped from each of the production processes to the destination. Irrespective of whether the type of the plurality of products is one or more in each of the production processes, a production plan creating apparatus is provided for associating each product with the time of day.

In this device, based on shipping conditions,
The production plan is such that the type of multiple products in each production process is 1
One or more products, one or more
It is created so as to satisfy the shipping condition in a state of being associated with the time of day. Therefore, according to the first aspect of the present invention, the production plan at each stage in the production process is compared with the development device that creates the product in a state where the product is associated with the "number", and the product is created in a timely and detailed manner for each product. This makes it possible to improve the accuracy of production management, and thus to achieve an effect that the efficiency of production can be easily improved.
According to the first aspect of the present invention, since the time is determined for each product, it is possible to produce a production plan in consideration of the time order of the products based on the time. . Even in the development device, an order plan is ultimately created for a plurality of products, and each product is individually handled, and the in-process time of each product is determined.
Ultimately, a work plan is created for each product in relation to the time of day. However, according to the first aspect of the present invention, it is possible to create a plan other than the work plan, for example, a shipping plan, a use plan, or a purchase plan in association with the time in one day for each product. In each stage of use and purchase, it is easy to manage products in a timely and detailed manner. Also, without waiting for the creation of the sequence plan, from the beginning of the production plan,
A use plan or a purchase plan can be created for each product in association with the time of day. In addition, prior to the creation of the order plan, the in-process time is determined for each product, and the order plan can be created using the predetermined in-process time. This makes it easier to create a sequence plan.

Hereinafter, the invention of claim 1 will be supplementarily described. (1) Here, "material" means "parts" when one product to be produced is composed of a plurality of parts, or one product to be produced is composed of one material In some cases that "material" may mean. (2) “To purchase a plurality of materials and produce a plurality of products in order” means to produce one product from one material, or to produce one product from multiple materials. May mean. (3) The “shipping destination” is, for example, when the “at least one production process” is composed of a plurality of production processes that are linked to each other, the production process for which the production plan is created is the final process. If there is, it means a sales side such as a store or a consumer side such as a consumer, and if it is not the final step, it means a production step immediately downstream of the production step. (4) The “production plan” includes, for example, a plan for purchasing each material of each product from a supplier, a plan for using each purchased material at a predetermined use position in each production process, There are a plan for a mechanism for starting production of each product in each production process, a plan for shipping completed products to a shipping destination, and the like. (5) "Time in a day" may be expressed in units of hours, such as "what time", in units of minutes, such as "what time, minutes", or "hour, minutes, seconds". There is a representation in seconds.

According to a second aspect of the present invention, there is provided the production plan creating apparatus according to the first aspect of the present invention, wherein each of the production steps comprises:
As a plurality of stages thereof, a mechanism to start producing each of the products in each of the production processes, and a shipment of each of the completed products to the shipping destination are sequentially executed, and (a) Shipping time determining means for determining a shipping time for performing the shipping of each of the products based on shipping conditions; (b) a shipping time of each of the products determined by the shipping time determining means; and A production time creation means for deciding a production time at which the production is to be performed for each product based on the production lead time of each product.

In this apparatus, the shipping time of each product is determined based on the shipping conditions so that the shipping conditions are satisfied, and each of the products is determined based on the shipping time and the production lead time of each product in each production process. The product launch time is determined so that the actual value of the shipping time of each product does not fall behind the planned value. In other words, the shipping plan and the in-process plan in each production process are created in association with the time in one day for each product, regardless of whether there are one or more types of products in each production process. Because
Therefore, according to the second aspect of the present invention, the production plan at each stage of the shipment and the device out of the plurality of stages in the production process can be finely prepared in time for each product, and the time sequence of the products can be adjusted. Therefore, it is also possible to obtain an effect in which it is possible to create the image.

According to a third aspect of the present invention, there is provided the production plan creating apparatus according to the second aspect of the present invention, wherein each of the production steps comprises:
As the plurality of steps, further, the purchase of the respective materials of the respective products from the supplier and the use of the purchased respective materials at predetermined use positions in the respective production processes are sequentially executed. And, further, (c) a use time determining means for determining a use time at which each of the materials should be used, based on the work time of each of the products determined by the work time determining means, d)
The purchase of each material should be performed based on the use time of each material determined by the use time determination means and the purchase form of each material when each material is purchased from the supplier in each production process. A production plan creation device is provided that includes a purchase time determination unit that determines a purchase time.

In this apparatus, after the shipping time and the device time of each product are respectively determined, the use time of each material constituting each product is changed based on the device time of each product after the device time of each product. Is determined based on the use time of each material and the purchase form of each material so that the purchase time of each material is determined such that the actual value of the use time of each material does not fall behind the planned value. That is, the use plan and the purchase plan are created in association with the time of the day for each product irrespective of whether there are one or more types of a plurality of products in each production process. Therefore, according to the third aspect of the present invention, the production plan at each stage of the shipment and the device among the plurality of stages in the production process can be finely prepared in terms of time for each product, and the time sequence of the products can be adjusted. Therefore, it is also possible to obtain an effect that it is possible to create the image.

As used herein, the term "work time" is generally defined as the time at which at least one material constituting one product is first worked in each production process, and the term "work time" is defined as one time. If the product is produced by applying at least one type of processing to a material at least once, it is defined as a term which means that the material is first processed, When one product is formed by assembling a plurality of parts as a plurality of materials together, it can be defined as a term meaning that the parts are first assembled. On the other hand, "production lead time"
Is generally defined as the time from the start of production for one product until the product is completed. For example, as described above, if a product is produced by applying at least one type of processing to a material at least once, the material is first processed and then processed. Defined as the time until the product is completed, and when one product is composed by assembling a plurality of parts together, the parts are first assembled before the product is completed. To be defined as Therefore, if the in-process time is defined as the machining start time or the component assembling start time as described above, the time coincides with the start reference point when calculating the production lead time, and the in-process start time is easily calculated from the shipping time. The time can be calculated backward. For example, FIG.
6, the “work time” is defined as 1 when a single product 400 is produced by applying at least one type of processing to one material 402 at least once.
FIG. 37 shows an example of the relationship between the “device time” and the “production lead time” when the material 402 is defined as a term indicating the time at which processing is first performed. When the time is set by assembling the first type of auxiliary component 504 and the second type of auxiliary component 506 into one basic component 502, the first auxiliary component is added to the basic component 502. 5
An example of the relationship between the “work-in time” and the “production lead time” when the time is defined as the time from when the product 04 is assembled (not after the basic part 502 is put on the processing line) until the product 500 is completed. It is shown.

On the other hand, the term "set up" can be defined as follows, unlike the above. That is, when one product is configured by assembling a plurality of parts with each other, it can be defined as a term meaning that any of those parts is first placed on a processing line of each production process. . However, when defined in this way, unlike the above case, the “work time” does not match the starting reference point when calculating the production lead time, so if only the shipping time and production lead time of each product are In addition, it is necessary to determine the in-process time in consideration of the form (time and the like) when each material is transported from the in-process position on the processing line to the assembling start position.

In a preferred aspect of the third aspect of the present invention, each of the products is, as the plurality of materials, one basic part (for example, when the product is an engine of a vehicle,
Cylinder block) and at least one auxiliary part (for example, a piston if the product is a vehicle engine)
Having an auxiliary part attached to a basic part, and a finished product, and the device setting time determining means, the shipping time of each product, and the production time of each product in each production process. On the basis of the production lead time, determine the time at which the basic parts of each product are to be set in each production process, and the use time determining means determines each of the auxiliary parts based on the set time of each of the products. A use time that is a time to start using in each of the production steps is determined, and the purchase time determination unit determines the basic parts of each of the products based on the in-process time of each of the products, and determines the basic parts of each of the basic parts of each of the products. Determine the purchase time to be stocked in the production process, and for each of the auxiliary parts of each of the products, the use time and each auxiliary part are purchased for production in each of the production steps. Based from stocking position to be in the transporting configuration of each auxiliary component as it is conveyed to the position of use to be used in each production step, determining the purchase time to stocking each auxiliary component in each production process.

According to a fourth aspect of the present invention, in the production plan creating apparatus according to the third aspect of the present invention, the at least one production step includes a plurality of production steps linked to each other. A production plan is created for each of the production steps in order in a direction opposite to the flow of the product in the production steps, and the shipping time determination means is arranged upstream of the last one of the plurality of production steps. When determining the shipping time for each target production step with each of the target production steps as the target production step, for each material of the adjacent production step which is the production step immediately adjacent to each target production step on the downstream side thereof After the purchase time is determined by the purchase time determination means, the purchase time and the respective products are shipped from the target production process to the adjacent production process. Based on the shipping form of time, the subject said in the production process is to determine the shipping time of each product production plan creation device is provided.

In this apparatus, the shipment plan of each of the plurality of production processes that are linked to each other except for the final process is one or more of a plurality of product types in each production process. Irrespective of the above, each product is created in association with the time of day. Therefore, according to the fourth aspect of the present invention, a production plan at the shipping stage of each of the plurality of production steps except for the final step among the plurality of production steps can be finely prepared in time. In addition, there is an effect that the product can be created in consideration of the chronological order of products.

According to a fifth aspect of the present invention, in the production plan creating device according to any one of the second to fourth aspects, the plurality of products include a plurality of types of products, and After the device setting time is determined for each of the production processes by the determination means, when the plurality of products are sequentially produced in each of the production processes, the user sets the time at which the type of the product changes as the user changes. A first device that changes at least one of a plurality of device times for the products without changing the device order in each of the production processes assumed based on the device times. A production plan creation device including a time changing unit is provided.

Therefore, according to the invention of claim 5, the sequence of the products is assumed based on the time of each product individually determined, and the type of the product can be changed without changing the sequence of the products. The effect is obtained that the device setting time can be changed so that the time of the change is changed as instructed.

According to a sixth aspect of the present invention, there is provided the production plan creating apparatus according to any one of the second to fifth aspects, further comprising: After the device time is determined, based on the total number of products produced on each working day in each of the production steps, set by the user of the production plan creation device, at least a plurality of device times for those products. There is provided a production plan creation device including a second in-process time changing means for changing one of the products, which is assumed based on the in-process time, without changing the in-process sequence in each of the production processes.

Therefore, according to the invention of claim 6, the order in which the products are set is assumed based on the set time of each product. The effect is obtained that the in-process time can be changed so that the actual value of the total number of products produced on the working day does not exceed the production limit value. In addition,
Here, “setting” includes not only setting the total number of products newly, but also changing the total number of products already set.

According to a seventh aspect of the present invention, there is provided the production plan creating apparatus according to any one of the first to sixth aspects,
Further, after the production plan is created by the production plan creation device, at least one of a plurality of types of condition values used when the production plan creation device creates the production plan is provided by a user of the production plan creation device. Means for changing the condition value and the production plan, respectively, on the condition that a command for fixing the contents of the change is issued from the user after that when a command for changing the production plan is issued. (A) when a command to change the condition value is issued from the user, the condition value is provisionally changed in accordance with the command, and the production is performed based on the changed condition value. Provisional change means for temporarily changing and outputting the plan, (b) after the output, when the user issues a command to confirm the content of the change, the condition value and the production plan are changed. Production plan creation device including a production plan changing means having a deterministic changing means for respectively deterministically change is provided.

In this apparatus, the original production plan is not rewritten unless the user issues a change instruction for the condition value of the production plan and then issues a confirmation instruction for the changed contents again. Only rewritten after being issued. In other words, the original production plan is stored until a change confirmation command is issued. Therefore, according to the seventh aspect of the invention, unlike a development device in which an original production plan is rewritten immediately when a change command is issued from a user, an automatic restoration to an original production plan becomes possible. Is also obtained.

According to a preferred aspect of the present invention, the production plan changing means determines the shipping time of each of the products by the shipping time determining means, and sets the work time of each of the products by the working time determining means. After the time is determined, the user of the production plan creation device specifies at least one of a plurality of types of input variables necessary for the device for determining the device time to determine the device time, excluding the shipping time. When a command to change an input variable is issued, a change in the device plan is to definitively change the specific input variable and the device time on the condition that the user issues a command to confirm the content of the change. Means, (a) when a command to change the specific input variable is issued from the user, temporarily change the specific input variable in accordance with the command Temporary change means for temporarily changing and outputting the in-process time based on the specific input variable after the change and the same shipping time as the previously stored shipping time, and (b) output thereof. After that, when the user issues a command to fix the content of the change, a financing plan changing means having deterministic changing means for deterministically changing the specific input variable and the gambling time, respectively.

In another preferred embodiment of the invention, the production plan changing means includes information based on the provisionally changed production plan (for example, the number of devices per day);
It has display means for displaying information (for example, the number of devices per day) based on the production plan before change stored in advance on the same screen. In this embodiment, the user can easily determine whether or not the content of the change of the condition value of the production plan is appropriate, and the effect of improving the efficiency of the change is obtained.

According to an eighth aspect of the present invention, there is provided the production plan creating apparatus according to any one of the second to seventh aspects, further comprising an order plan for an order of setting the plurality of products in each of the production steps. An order plan creating means to create, (a) after the in-process time is determined for each of the plurality of products determined by the in-process time determining means, based on the plurality of in-process times for those products, A work order determining means for determining a work order in each of the production steps, and (b) a work time of each of the products, without changing the determined work order, each of the products is predetermined in each of the production steps. Production schedule including a schedule time correction unit that corrects the sequence so as to be sequentially set at the same time interval as the set tact time. Forming apparatus is provided. Here, the “tact time” means a time value indicating how long (or time interval) one product should be produced, and is calculated by dividing a daily operating time by a required number of daily production. You.

Therefore, according to the eighth aspect of the present invention, the order plan creating means can determine the work order based on the work time for each product whose work time is previously determined by the work time determining means. For,
As compared with the case where the order planning means determines the device order from the beginning, as in the development device, the effect that the device order can be determined in a short time without complicated operation is obtained.

According to a ninth aspect of the present invention, in the production plan creating apparatus according to the eighth aspect of the present invention, it is preferable that the in-process sequence determining means includes: After the in-process time is determined for each of the products, a provisional in-progress order determining means for determining the in-progress order in each of the production processes of the products as a provisional in-progress order based on the plurality of in-progress times for those products. (B) changing the tentative work order based on a pattern set by a user of the production plan creation device as a pattern in which the products are arranged when the plurality of products are sequentially produced in each of the production processes. Planning device having final device order determining means for determining the final device order by means of There is provided.

For example, in a part assembly line,
Immediately after that, if parts of the same type are continuously purchased from the upstream process, work delays may occur, causing line stoppage, etc. It may be required that another type or a plurality of types of components be purchased before the same type of component is purchased. In addition, in order to improve workability, if a particular type of part is purchased, it may be requested that a different type of part be purchased.

Therefore, according to the ninth aspect of the present invention, after the provisional work order of the products is determined based on the work time determined for each product, the product arrangement pattern according to the above-mentioned request is determined. Is considered, the effect that the final device order can be determined only by performing a relatively simple operation is obtained.

When the provisional work order of the product is changed by the final work order determining means, if the order is changed for a part, the relationship with other parts is automatically changed. Therefore, there is no guarantee that the arrangement pattern is realized in all parts in all cases where the provisional device order is changed. Therefore, in a desirable mode of the invention according to claim 9, furthermore, when the final device order determining means cannot change the provisional device order, the arrangement pattern cannot be realized in all portions thereof. Has a mechanism for notifying the user of this inconsistency.

According to a tenth aspect of the present invention, there is provided the production plan creating device according to any one of the first to ninth aspects, further comprising: after the production plan is created by the production plan creating device; When the at least one production process is being executed according to a production plan, an actual state of each stage in each of the production processes is acquired in association with a time of day, and based on the actual state and the production plan. There is provided a production plan creation device including production state output means for associating states with time in a day and outputting the states in a line with each other. Therefore,
According to the tenth aspect of the present invention, the actual state of each stage in each production process and the state based on the production plan are associated with the time of the day and output together with each other, so that the user can produce the actual state. In relation to the plan, it is possible to monitor finely in time, and the effect of improving the efficiency of production management is obtained. Here, “each stage” includes, for example, shipping, gimmick, use, purchase, inspection, etc.
Further, the “state” includes, for example, waiting for shipment and inventory.

According to the eleventh aspect of the present invention, in each of at least one production step of purchasing a plurality of materials from a supplier, producing a plurality of products in order, and shipping the products to a destination, Is a method of creating a production plan for producing each operation day, based on the shipping conditions of each product when each product is shipped to the shipping destination from each production process, the production plan, Regardless of whether the type of the plurality of products is one or more in each of the production steps, the computer is executed by a computer to implement a production plan creation method for creating each product in association with the time of day. A recording medium for a production plan preparation program which is to be recorded by the computer and is to be read is provided.

Therefore, according to the eleventh aspect of the present invention,
A production plan creation method in which a production plan at each stage in a production process can be created in a timely and detailed manner for each product or in consideration of a time sequence of products can be implemented by a computer. The effect is obtained.

In a preferred embodiment of the present invention, each of the production steps includes, as a plurality of stages, a mechanism for starting production of each of the products in each of the production steps, and a step of starting the production of each of the products. And shipping to the shipping destination, respectively, and the production plan creation method comprises: (a) a shipping time determination for determining a shipping time at which the shipping of each product is to be performed based on the shipping conditions; And (b) the shipping time of each of the products determined in the shipping time determining step, and the production lead time of each product in each of the production steps, based on the time of the device to perform the device for each device. And a device setting time determining step. According to this embodiment, a production plan at each stage of shipment and a process among a plurality of stages in a production process can be created in detail in terms of time for each product, or can be created in consideration of the time sequence of products. There is an effect that a possible production plan creation method can be executed by a computer.

In another preferred embodiment of the present invention, each of the production steps includes a plurality of steps,
Further, purchasing from the supplier of the respective materials of the respective products, and sequentially using each of the purchased materials at predetermined use positions in the respective production processes, and The production plan creation method further includes: (c) a use time determination step of determining a use time at which the use of each of the materials is to be performed, based on the setup time of each product determined in the setup time determination step, b)
The purchase of each material should be performed based on the use time of each material determined in the use time determination step and the purchase form of each material when each material is purchased from the supplier in each production process. A purchasing time determining step of determining a purchasing time. According to this embodiment, the production plan at each stage of use and purchase among the plurality of stages in the production process can be created in detail in terms of time for each product, or can be created in consideration of the time sequence of products. There is an effect that a possible production plan creation method can be executed by a computer.

[0044]

[Supplementary Description of the Invention] Some preferred embodiments of the present invention will be described below. (1) Information on the production plan in the own process of purchasing parts from the previous process and manufacturing products based on the parts, using computer equipment based on production requests issued in relation to the products from the subsequent process. A method of transmitting the information to a previous process, wherein when a customer inputs the number of products, the database of the computer device associates the product with a predetermined unit of the products, and sets the shipping time of each product. And, for each product, a work time in consideration of the lead time in the production process, and based on a database that stores the relationship between each product and each part in the computer device, A product production information generating method for generating data defining a part purchase time and transmitting part purchase data including the purchase time data to the preceding process. (2) The method according to (1), wherein, in the pre-process, based on the purchase time data transmitted for each of the parts, the transportation time of each part and the production lead time of each part are taken into consideration. How to determine the device time. (3) In the method of (1), in a case where the time and time of the work of each of the products are predetermined in the production process, it is necessary to change the time of the work of each of the products. How to change only the device time without changing the device order. (4) The method according to any one of (1) to (3), wherein a result of a device-specific device is obtained for each work process in the production process, and the device-work time is compared with a plan of the device time. How to manage the production status of products by. (5) A simulation device that simulates a product process based on a product process plan and evaluates the plan in a production process in which parts are purchased from a previous process and a product is manufactured based on the component. An input unit for inputting the number of products shipped and the production lead time as settable; and an operation unit for calculating a shipment time and a production time in consideration of the production lead time for each product unit;
A display means for displaying the calculation result.

[0045]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a more specific embodiment of the present invention will be described in detail with reference to the drawings. The present embodiment is a production plan creation device that creates a production plan for an automobile production process in which a plurality of production processes are linked to each other. FIG. 1 shows a hardware configuration of the production plan creation device. At least one production planning device
One server machine 10 and a plurality of client machines 12 (only one client machine is shown in the figure) communicate with a communication line 14.
Are mutually connected online, and mutually transmit and receive data by a client / server method.
The server machine 10 is mainly configured by a computer 20 including a processing device and a storage device. In the figure, only the storage device is taken out of the computer 20 and is indicated by reference numeral 22. The storage device 22 has a function of reading and writing programs and data from the recording medium 24. In addition, the storage device 2
2, a database for creating a production plan is constructed. Note that the computer 20 can be configured mainly with a personal computer, for example. In this case, a hard disk is added to increase the storage data capacity, and a RAM memory is added to increase the data search speed. It is desirable to use. This computer 2
0 also includes an input device 2 including a keyboard and a mouse.
6 are connected to each other and the display device 2 is an output device.
8 and the printer 30 are also connected. The display device 28 displays the information on the screen 32, and the printer 30 prints the information on paper. Similarly, each client machine 12 is mainly configured by a computer 34, and further, an input device 36 and a display device 38 are connected.

FIG. 2 is a functional block diagram of the production plan creation device. In the production plan creation device, a shipment plan is created by the shipment time determination means 40. Specifically,
The shipping time of each product in each production process is determined based on the production request from the shipping destination. In addition, a device planning is performed by the device time determining means 42, and specifically,
Based on the shipping time determined by the shipping time determining means 40, the in-process time of each product in each production process is determined. The first in-process time determining means 42 operates when the production process for which the in-process time is to be determined is the last one of the plurality of production steps, and determines the in-process time. And a second in-process time determining means 46 which operates in a production process other than the above to determine the in-process time. Further, the use time determining means 48
Thus, a usage plan is created. Specifically, based on the device time determined by the device time determining means 42,
The use time of each component constituting each product is determined. Further, a purchase plan is created by the purchase time determination means 50. Specifically, the purchase time of each component is determined based on the use time determined by the use time determination means 48. Further, in the production plan creating device, the first delay time changing means 52 performs the advance delay correction,
More specifically, the in-progress time determined by the in-progress time determining means 42 is changed in order to advance or delay the time when the type of the product produced in each production process changes from the original time. . Further, the production time limit processing is performed by the second time setting means 54, and more specifically, the time determined by the time setting means 42 is used to determine the product produced on each working day in each production process. It is changed according to the number. A simulation process is performed by the production plan changing means 56. Specifically, the first and second device setting means 52, 5
The change of the device time in 4 is performed without changing the original device time, and a change value of the number of devices in accordance with the change is provisionally obtained. In addition, an order plan is created by the device order determining means 58. Specifically, the product order based on the device time determined by the device time determining means 42 is determined according to a predetermined product arrangement pattern. By changing, the final device order is determined. Further, progress management is performed by the production state output means 60, and more specifically, a state in which the state in each stage of each product and the actual state based on the work time determined by the work time determination means 42 are aligned with each other. Is displayed on the screen 32 of the display device 28.

FIG. 3 is a flowchart showing the software configuration of the production plan creation device, that is, a plurality of executable processing steps. This flowchart also shows a production plan creation program recorded in the recording medium 24 in advance. These processing steps include an order receiving processing step 30, a shipping plan creation step 102, a work plan creation step 104,
Use plan creation step 106 and purchase plan creation step 10
8 and a shipping plan creation step 110, a work plan creation step 112, a use plan creation step 114, and a purchase plan creation step 116, which are executed for the own process 202, respectively. These processing steps are basic processing steps for creating a production plan. Here, the “post-process” and “own process” are used to classify a plurality of production processes into two types on a production plan creation program and handle the plurality of production processes as described above. "Pre-process" and "own process"
The meanings of these terms when classifying into “post-process” and “post-process” do not completely match. More specifically, the “post-process” in the program means the last process of a plurality of production processes that are linked to each other, and matches the above definition. It means each of the production processes except the final process, and does not match the above definition. In other words, for each of the plurality of production steps except the last step, the same part of the program is repeatedly executed by the computer 20 in order to create a production plan for the production step. Each production process is called "own process".

Further, as auxiliary processing steps, there are a preceding delay correction step 120, a production frame filling processing step 122, a simulation processing step 124, an order plan creation step 126, and a progress management step 128, as shown in FIG. The advance delay correction step 120 is a post-process setup plan creation step 1
04, during the execution of the self-process setup plan creation step 112 and the simulation processing step 124, a preceding delay correction is performed for each of the processing steps, and
In the production frame packing process step 122, the production frame packing process is performed for each of the post-process setup plan creation step 104, the self-process setup plan creation step 112, and the simulation processing step 124, respectively. In addition, the order plan creation step 126 receives the setup plan from each of the setup plan creation steps 104 and 112, determines the setup order based on the setup plan, and creates a sequence table (representing the production order for performing production). create. Progress management process 12
8, a device plan is received from each device planning process 104, 112, a device result is obtained from a result acquisition process (not shown), and the device plan and the device result are displayed on the screen of the display device 28 in a state where they are arranged side by side. 32.

That is, in the production plan creation device, the part that executes each of the shipping plan creation steps 102 and 110 constitutes the shipping time determination means 40, and
The steps that execute steps 04 and 112 constitute the in-process time determination means 42, and the sections that execute the use plan creation steps 106 and 114 constitute the use time determination means 48, and the purchase plan creation steps 108 and 116 The part to be executed constitutes the purchase time determination means 50. In the production plan creation device, the advance delay correction process 102
Is a part of the first time setting means 52, a part of executing the production frame filling process step 122 is a part of the second time setting means 54, and a part of executing the simulation processing step 124. Constitutes the production plan changing means 56, the part that executes the sequence plan creation step 126 constitutes the in-process sequence determination means 58, and the part that executes the progress management step 128 is the production state output means 6.
0 is formed.

FIG. 4 shows that the basic processing steps are sequentially executed by the production plan creating apparatus, that is, a plurality of chained production steps are sequentially executed from the last step to the first step as the target step. A production plan is created as a result. The figure shows a case where there are four or more production steps that are linked to each other. First, the final process is defined as a "post-process" in the program, and the order receiving process 100, the shipping plan preparing process 10
2. Device planning process 104, usage planning process 10
6 and a purchase plan creation step 108 are sequentially performed. Next, the process before the final process is the “own process” in the program.
Then, based on the purchase plan, which is the final output of the final process, which is the subsequent process, the shipping plan creation process 11
0, device planning process 112, usage planning process 11
4 and a purchase plan creation step 116 are sequentially performed. After that, the previous process of the own process is set as a new “own process” on the program, and based on the purchase plan which is the final output of the subsequent process, the shipping plan creating process 110, the device planning process 112, The plan creation step 114 and the purchase plan creation step 116 are performed in order. Thereafter, the above processing is repeated until the “own process” in the program matches the first process, and as a result, a production plan is created for all the production processes. In the figure, the execution of the use plan creation step 114 and the purchase plan creation step 116 is not shown for the first step, but this is because in the first step, parts are purchased and parts are assembled. Does not exist, and it usually starts with the device.

Here, the contents of each of the above-described processing steps will be specifically described. First, the basic processing steps among them will be described with reference to FIGS. 5 and 6. FIG. In addition,
The part surrounded by the two-dot chain line on the left side of FIG. 5 shows a process in which six products A for which an order has been received on March 15 (Fri), which is an operation day, are produced. A. Processing Steps for Post-Process (1) Order Receiving Processing Step 100 First, the order from the dealer for various final products, that is, vehicles, is input to the production plan creation device. The types of the order include unofficial indication and confirmation. “Internally shown” means by post-process to assemble the vehicle (assuming that the post-process is configured as a set of a plurality of individual production processes, where “by post-process” means “by individual production process” ), And the required amount per day is notified, for example, on a monthly basis for each product number representing the vehicle. In the private announcement, the required daily amount of each of the following month, the next two months and the next two months is notified on the day seven operating days before the first operating day of the following month. On the other hand, “confirmed” is to notify the required amount per day for each post-process and product number on a daily basis. In the determination, the daily required amount on the working day after 3 or 4 working days is notified daily. When the confirmation is input for the required daily amount pertaining to the confidential information, the production plan creation device replaces the required daily amount pertaining to the confidential information with the required daily amount pertaining to the confirmation, and finally receives an order. Number of orders. On the other hand, at the stage where the secret information is notified but the confirmation is not yet notified, the production plan creation device sets the daily required amount pertaining to the secret to the number of orders temporarily accepted. FIG. 5 shows an example in which the order for the product A is input as an order from a store for five operating days from March 11 to March 15. (2) Post-process shipping plan creation process 102 In this process, the product A is stored in the database.
The same number of data storage areas as the number of ordered products A are generated for each subsequent process. Further, the shipping time of each product A is determined such that each product A is shipped at substantially equal time intervals within the daily operating hours. If there is a shipping condition in a post-process (for example, a condition that two products A are to be picked up at a time), the shipping time is determined in consideration of the condition. (3) Post-process setup plan creation process 104 In this process, the in-process time of each product A is calculated from the shipping time of each product A by the production lead time of each product A in the post-process (for each product type). (Predetermined plan value)
Is determined by subtracting Note that, when a plurality of types of products are produced in the same post-process, the above-described three processing steps (1) to (3) are performed for each of those types of products, whereby the same post-process is performed. Is determined for all products to be produced in. (4) Post-process use plan creation process 106 In this process, the product A is developed into at least one part a (one part a in the example in the figure), and data for the part a is stored in the database. Storage area is part a
The same number is generated as the number of used. Further, the use time of each part a is determined based on the device time of each corresponding product A. In the present embodiment, the use time of each part a is determined to be the same as the in-process time of each corresponding product A. (5) Post-process purchase plan creation process 108 In this process, a plurality of parts a used in the post-process are grouped by the accommodation number and delivery unit, which are the procurement conditions of the post-process, so that each component a Is determined. Here, “the number of accommodated parts” refers to the number of parts a accommodated in the same pallet, and “delivery service” means that the pallets are transported from the own process to the subsequent process and the component a is transferred from the own process to the subsequent process. Means of delivery. In the example shown in the figure, on March 15, six products A were set in the post-process, and
Six parts a correspond to the products A. The six parts a are the last two, the last two, and the last two
The individual, the first one and the last one of the previous day are stored in each pallet in pairs. Both the last two pallets and the two immediately preceding pallets are delivered from their own process on the first delivery flight on March 15, and the two immediately preceding pallets are used alone on the previous day, March The first pallet will be delivered on the same flight on the same day, with the first pallet delivered alone on the second delivery flight on the 14th. Thus, pallet 1
The number of parts a accommodated per unit and the number of pallets accommodated per unit of delivered flight are both known in advance, and the time at which each unit of delivered flight arrives at the post-process purchasing position is also known. Since it is known in advance, the purchase time of each part a can be obtained from the use time of each part a. Note that the last two processing steps (4)
(5) is performed for each type of component when a plurality of types of parts are produced in the same post-process, thereby determining the purchase time of all components produced in the same post-process. . The five processing steps (1) to (5) described above are executed for each of the individual production steps when the post-processing is configured as a set of a plurality of individual production steps.

B. Process for own process (1) Self-process shipping plan creation process 110 In this process, the product a to be produced in the own process
The shipping time from the self-process to the post-process is calculated by subtracting the transportation time from the self-process to the post-process (planned value predetermined for each product type) from the purchase time predetermined for the post-process. Is determined by In the example shown in the figure, “a” is added to both the product to be produced in the own process and the part to be purchased in the subsequent process from the subsequent process. This is because they are the same, and the only difference between the processes is the difference between the names of “product” and “part”. (2) Own process setup plan creation step 112 In this process step, the setup time of each product a is determined by subtracting the production lead time of the own process from the shipping time of each product a. At this time, when there are a plurality of identical device times among the plurality of determined device times, each of the plurality of identical device times except for the last one is a fixed time, For example, it is corrected so as to be shifted from each other by one second. Further, in this processing step, the in-process time of each product a determined in this way is determined by determining whether a plurality of products a are in a preceding delivery flight (delivery flight from the own process to the subsequent process) and a subsequent delivery flight. It is modified so that it can be set at almost equal time intervals. In the example of FIG. 5, on March 14, six products a were set in the own process, and of the six products a, the first two products were delivered to the post-process on the second flight of the day. The last four are delivered to the post-process on the first flight the next day. And those 6
Regarding the product a, first, the in-process time is determined by subtracting the production lead time of the own process from the shipping time, and then the in-process time is the same for the two products a. The time, for example, one second, is corrected so as to be shifted from each other, and the last four products a are similarly corrected in the device time. Further, with respect to the previous two products a, the set times are corrected so that the set is performed at substantially equal time intervals between the departure time of the first flight and the departure time of the second flight on the day. Regarding the last four products a, the set times are corrected so that the set is performed at substantially equal time intervals between the departure time of the second flight of the day and the departure time of the first flight the next day. The departure time of each delivery flight is also known in advance. Note that these two processing steps
(1) and (2) are performed for each post-process (for each individual production process) and for each product (for each type of product). It is determined that the launches can be set at approximately equal time intervals between two delivery flights. In addition, as described above, as a result of the two processing steps (1) and (2) being performed for each of the post-processes and for each of the products, again, among the multiple times of the multiple products, the times of the coincidences are different. May occur. In this case as well, as in the case described above, the mechanism plan creation step 11
2, one of a plurality of device times matching each other
Except for at least one for a certain period of time (eg, 1
(Second) By being shifted in the past, it is corrected so that a plurality of device times matching each other no longer exist. As a result, the set times are determined for all products to be produced in the own process, and the set order of the products is determined. (3) Own process use plan creation step 114 In this process step, the product a is developed into at least one part α (one part α in the example of FIG. 5), and data for the part α is stored in the database. The same number of storage areas as the number of used parts α are generated. Further, the use time of each component α is determined based on the device time of each corresponding product a. In the present embodiment, the use time of each component α is determined to be the same as the in-process time of each corresponding product a. (4) Own Process Procurement Plan Creation Step 116 In this processing process, the purchase time of the component α is determined by grouping at least one component α by the number of accommodations and the delivery flight which are the procurement conditions of the own process. . The last two processing steps (3) and (4) are performed for all parts used in the own process, and thereby, the purchase times of all parts are determined. After the above four processing steps (1) to (4) are completed, the production plan creation device searches for products or parts on a daily basis or on a delivery flight basis based on a device time or a shipping time, and the product or part is searched. The number of products produced per day and the number of products per flight are calculated and displayed (output) on the screen 32 of the display device 28, for example, as shown in FIG.

In each of the device planning processes 104 and 112, after the device time is determined,
Load adjustment is performed to adjust the load, which is the number of devices per day, so as to be substantially equal within the target operation period. This load adjustment will be specifically described with reference to FIG. In the example shown in the figure, two types of products a and b are set in the own process according to the set-up plan before the load adjustment, and the product a is set first and the product b is set later. In the device planning before load adjustment, the number of devices per day for product a and product b
The total number of devices per day, which is the sum of the number of devices per day, is not sufficiently uniform within the target operating period. Therefore, the load adjustment is performed. In this case, first, the total number of devices per day is almost evenly distributed within the target operation period. Up to this point, the development device is the same as the above-described development device. The device time is modified so that the total number of devices per day is achieved. That is, the setting time is corrected so that the product b is not set before the setting of all the products a to be manufactured is completed. According to the present embodiment, a total of two inventories occur for two days on the first and second operating days for the product a, and a total of three inventories occur for the product b on the third operating day. Although it does occur, there is no shortage, so there is no adverse effect on subsequent processes. In the case of the development device, not only inventory but also shortage occurs due to load adjustment, whereas according to the present embodiment, inventory is unavoidably generated due to load adjustment, but shortage does not occur and load adjustment is performed. This can be performed without adversely affecting the subsequent steps.

C. Preceding delay correction step 120 This processing step is a processing step of correcting a predetermined installation time so that the type change time at which the type of product to be installed in each production process changes in accordance with a command from the user. It is. This processing step is executed by the computer 20 executing the advance delay correction program, which is a part of the production plan creation program and shown in the flowchart of FIG. Hereinafter, this process will be described with reference to FIG. 9 and taking the case shown in FIG. 9 as an example. FIG. 9 shows an example in which a product to be set earlier is indicated by a and a product to be set later is indicated by b, and the time at which the product b is set first is set earlier than the initial schedule. In this case, first, in step S1 of FIG. 8 (hereinafter simply referred to as “S1”; the same applies to other steps), the user specifies a plurality of products to be subjected to this processing. In the example of FIG. 9, products a and b are specified, respectively. Next, in S2, the user designates, as the target period, an operation period in which the user is allowed to change the device time in order to change the type change time. In the example of FIG. 9, four days from the first working day to the fourth working day are designated as the target period. Thereafter, in S3, the user designates a base point indicating the type change time. In the example of FIG. 9, a base point indicating the time when the product type changes from a to b is specified. Subsequently, in S4, the user inputs a base point advance delay command value indicating the direction and amount of movement of the base point. Specifically, if the user desires to move the base point in the opposite direction to the flow of the product and to make the type change time earlier than the original time, a negative sign is added to the time to be made earlier. The attached value is input as the base advance delay command value, while
If the user desires to move the base point in the same direction as the product flow and delay the type change time from the original time, the value with a positive sign added to the time to be delayed is the base lead time. Input as a command value. In the example of FIG. 9, “−7H (H: time)” is input as the base point advance delay command value. After that, in S5, the input base-point advanced delay command value is added to the in-process time of each product, so that the in-progress order of a plurality of products based on the in-process time of each product is not changed, and The in-process time of each product is corrected so that the base point is realized.
However, this correction is performed so that the total value of the number of devices per day of each product in the entire target period does not change before and after the correction of the device time. It is guaranteed that products to be set up within the target period will always be set up within the target period even if the date to be set is changed. Further, in S5, the setting time is further corrected so that each product is set at substantially equal time intervals in each period obtained by dividing the target period into two at the base point after the movement.

D. Production frame filling processing step 122 This processing step is performed so that the in-process time of each production process, which is determined in advance so that the delivery date can be kept, falls within the production frame determined for each production process regardless of the production frame. This is a processing step for correction. This processing step is executed by the computer 20 executing a production framing processing program which is a part of the production plan creation program and which is represented by a flowchart in FIG. Hereinafter, this process will be described with reference to FIG. 11 and an example shown in FIG. First, S11 of FIG.
In, the number of devices in the production frame is input by the user in consideration of the total number of products a and b to be processed per day in each production process. At this time, it is desirable to input the number of devices in the production frame so that the number of products to be mounted within a target period described later matches the number of products that can be mounted corresponding to the production frame. Next, in S12, the products a and b to be subjected to the production
And are respectively specified. After that, in S13, the user designates a target period, which is a part of the operation period that allows the number of devices to be changed for the production quota process. Next, in S14, the total number of devices per day of the production frame is realized without changing the device / device time of each of the products a and b based on the device time. Will be corrected as follows. Furthermore, in this S14, the setting time of each of the products a and b is also modified so that a plurality of products a and b to be set on the same operation day are set in sequence at substantially the same time intervals. .
In the example of FIG. 11, since the number of products set in the target period and the number of products set in accordance with the production frame coincide with each other, the total number of products set per day for the products a and b is The number of devices in production a and b is changed to a number exactly equal to the total number of devices per day corresponding to the production slot without being changed.

E. Simulation processing step 124 In this processing step, if a condition value such as a production condition is changed by a user's command, a temporary setting time is set based on the changed condition value without changing the original setting time. If the user issues a command to confirm the change based on the result, the process time is definitely changed. FIG. 12 is a functional block diagram of a part of the production plan creation device that executes the simulation processing step 124 as a simulation device. In this simulation device, the shipping time determined in advance by the shipping plan creation steps 102 and 110 is stored and stored in the memory 220, and the installation time (the original time before the change) (Device time) is recorded and stored in the memory 222. The user can use the input device 22 to change the changed values of various condition values (for example, as shown in FIG. 13, the tact time under the production conditions, the production lead time, the target period under the advance delay correction condition, the base point, and the base advance delay command value). input. Based on the input change value and the shipping time stored in the memory 220, the provisional change unit 2
24, the device plan is provisionally changed. In the present embodiment, the provisional change unit 224 has the same configuration as the original device planning unit 42 (see FIG. 2). However, the provisional change unit 224 can be configured to easily and quickly determine the start time even though the accuracy is lower than the original start plan creating unit 42. The provisionally changed time is displayed on the screen 32 by the display unit 226 together with the original time. Based on the display result, the user determines whether or not the current change content is appropriate. If the user determines that the change content is not appropriate, the user inputs again the change values of the various condition values using the input device 22. If it is determined that it is appropriate, a command to determine the content of the change is input by the input device 22, and in response to this, the deterministic change means 230 rewrites the condition value and the device time to the changed values.

This simulation processing step 124
A simulation processing program which is a part of the production plan creation program and which is represented by a flowchart in FIG. 14 is executed by being executed by the computer 20. Hereinafter, this process will be described with reference to FIG. 13 and taking the case shown in FIG. 13 as an example. First, in S21 of FIG. 14, when the user issues a command to perform a simulation process to the production plan creation device, a condition input support image for simulation (hereinafter, simply referred to as “input support image”) is displayed on the screen 32. )) Is displayed. FIG. 13 shows an example of the input support image.
(A). Then, in S22, for each condition value that the user wishes to change,
If the changed value is entered as a simulation value,
The display area of the input support image in the screen 32 is shown in FIG.
As shown in (a), for each condition value, the current value (that is, the value before change) and the simulation value input this time are displayed in association with each other. Subsequently, in S23, the user waits for the command “trial calculation” displayed in the display area of the input support image on the screen 32 to be selected by clicking with the mouse. If selected, in S24, the original device time is stored and stored in the memory 222, and a new device time is set based on the changed value of the condition value and the shipping time stored in the memory 220. It is determined. The device time is provisionally changed. Further, in this step, the changed number of devices per day is estimated based on the changed device time. Subsequently, in S25,
As shown in (b) of FIG.
2, the current value and the estimated value are displayed side by side. However, the number of devices per day is displayed in a different area of the screen 32 from the display area of the input support image. Thereafter, in S26, it is determined whether or not a command to fix the content of the current change has been issued by the user. If not, the determination is NO, the process returns to S22, and the changed value of the condition value is again set. If the input is made and the output is made, the determination becomes YES, and the condition value, the device time and the number of devices as the device plan are rewritten to the changed values. The condition value and the device plan are each changed deterministically. It should be noted that the simulation processing step 124 can be executed separately from the technology for creating a production plan for each product individually and in association with a time within a day. In this case, automatic restoration to the production plan is also possible. The effect of being possible is obtained.

F. Order Plan Creation Step 126 This processing step creates a plan for the order in which a plurality of products are actually set in each production step so that the set order is appropriate in relation to work capacity, production capacity, and the like. This is a processing step. This processing step is executed by the computer 20 executing an order plan creation program, which is a part of the production plan creation program and shown in the flowchart of FIG. Hereinafter, this processing will be described with reference to the same drawing and taking the case shown in FIG. 16 as an example. In the example of FIG. 16, three types of products a, b, and c are produced in a certain production process. Before executing the order planning step 126,
Execution of the device planning steps 104 and 112 has been completed, and the device time for each of the products a, b, and c has been determined. The set time is determined so that a plurality of products of the same type are set at substantially equal time intervals as described above. Further, as described above, in the device planning process 112, if there is a device time corresponding to each other among the device times initially determined for the products a, b, and c, the corresponding product is determined. The device time is shifted so that there are no multiple products having the same device time. In the example of the figure, since the respective device times of the products a and c are the same, the device time of the product a is shifted so as to be earlier than the original value by, for example, one second. In the order plan creation step 126, first, in S31, the products a,
b and c are arranged in the device order. These products a, b,
The provisional device order of c is determined. Then S
At 32, the device times of the products a, b, and c are corrected. Specifically, as shown in FIG. 16, the in-process time of each of the products a, b, and c is set such that the products a, b, and c are sequentially set at the same time interval as a predetermined tact time. Will be modified. Subsequently, S33
In the tentative work order, the products a, b,
When c is sequentially produced, it is determined whether or not the products a, b, and c follow a predetermined pattern as a lined pattern. In the example of the figure, the arrangement pattern is such that the product c is set after the product b is set.
If the provisional device order follows the arrangement pattern in all of the parts, the determination is YES, and one execution of the program ends. If there is a part that does not conform to the arrangement pattern, the process proceeds to S34. , The provisional device order is changed so as to follow the arrangement pattern. In the example shown in the figure, the order of the products c and a is interchanged in two portions adjacent to each other in the provisional work order. Subsequently, in S35,
It is determined whether or not the new device order including the replacement portion follows the arrangement pattern. If so,
If the determination is YES and one execution of this program is completed, but there is a part that does not comply, that is,
If it is not possible to follow the arrangement pattern in all the parts even after changing the device order, the determination is N.
The result is O, and in S36, a product that does not follow the arrangement pattern is indicated to the user by an alarm. Thereafter, in S37, it is determined whether or not there is a product whose shipping time is later than expected due to the change of the device order. If it does not exist, the determination is NO, and one execution of this program ends. However, if it exists, the determination is YES, and in S38, a product whose shipping time is later than expected is notified to the user. Pointed out by the alarm. This completes one execution of the program. A sequence table is created based on the sequence plan thus created. Note that this order plan creation step 126
Therefore, if the final work order is different from the provisional work order based on the work time, strictly speaking, the use plan creation step 114 and the purchase plan creation step 1
16, but in reality, the final work order is slightly changed from the provisional work order, and the effect on the usage planning step 114 and the purchase planning step 116 is small. Since they are not so large, in the present embodiment, the use plan creation process 1
14 and the purchase plan creation step 116 are created irrespective of the change in the work order.

G. Progress Management Step 128 This processing step is a processing step of displaying the progress of a product in units of objects while comparing the plan with the actual results. This processing step is executed by the computer 20 executing a progress management program which is a part of the production plan creation program and which is represented by a flowchart in FIG. Hereinafter, this processing will be described with reference to the same figure and taking the case shown in FIG. 18 as an example. In this processing step, first, in S41, the number of devices per hour for each product is displayed on the screen 32 as a device plan. FIG. 18A shows a display example of a device plan when two types of products a and b are set in a certain process. Next, in S42, in order for the user to select the target of the current progress management from the combination of the product and the time zone displayed on the screen 32,
The product type and time zone are specified. The designation is performed by clicking one of a plurality of frames on the screen 32 on which the number of devices is displayed with a mouse. Thereafter, in S43, the progress of the product is displayed for the specified product type and time zone while comparing the plan with the actual result. Product progress records are provided externally on a regular basis. As shown in FIG. 18A, this time, the product b is selected as the product type and the seven o'clock is selected as the time zone. As shown in FIG. 7, the name of the own process, the product number, the name of the post-process, the inspection time of the product, the shipping time, the stock time, and the like are individually displayed for the four products b to be set in the time zone. The following can be understood from the display result. In other words, the four products b set at 7 o'clock are three in the post-process, which were set in response to orders from AP1, AP2, and AP2, and one set in the ZA safety stock. The product b for AP1 has an inspection record but no shipment record, so it is in stock, and its stock time is one hour and five minutes and is currently 12:00. Therefore, it can be understood that the shipping time is 5 minutes behind the schedule. As described above, in the present embodiment, the progress status of each product can be managed in association with the time of day.

As described above, one embodiment of the present invention has been described in detail with reference to the drawings. According to this embodiment, the following effects can be obtained. First, according to the present embodiment, when each production process receives a notification (shipping request) of the required number of products from a post-process, the shipping time can be individually answered to the post-process for each of the products immediately. Is obtained. In the development device, for example, when a notification of a required number of products is received from a post-process for a certain operation day on a certain operation day, the number of processes of the self-process on the operation day is changed from the self-process to the post-process on the operation day. Divided taking into account the number of deliveries used to deliver the product, so that, for example,
As shown in FIG. 19, the number of devices on a certain operation day is 5
If so, two of them are the first flight of the month and day,
The shipping time of each product from the previous process is calculated such that the remaining one is the second flight in what month and on what day. Therefore, with this development device, the number of flights to be used per day is large, and when the number of devices is large, it is difficult to allocate the number of devices to be delivered from the number of devices. On the other hand, according to the present embodiment, shipping times of a plurality of products in the own process are individually determined in advance. Therefore, according to the present embodiment, when the required number of products is notified from the post-process,
By simply specifying each of the products, an effect is obtained that the shipping time of each of the products can be immediately answered to the subsequent process. For example, as shown in FIG. 20, when an inquiry is made from a post-process for a specific product ax of a plurality of products a, the shipping time of the product ax can be immediately answered to the post-process. In the present embodiment,
As shown in the figure, the shipping time and the device time are directly associated with each other, and when the device time is changed, the shipping time is known. Therefore, for example, it is possible to obtain an effect that it is easy to find a range in which the device time can be changed within a range not delayed from the shipping time. Further, according to the present embodiment, there is also obtained an effect that it is possible to easily cope with a difference in the work form of the worker among a plurality of production processes. The work style of the worker is not always the same among a plurality of production processes and may be different. For example, as shown in FIG.
In the post-process, Saturday is a temporary work day, but in the own process, Saturday may be a non-working day. In this case, the own process has to produce five extra parts a corresponding to the five products A to be set up on the Saturday in the post-process by Friday and ship it to the post-process. Therefore, the development device adds the five products a to, for example, the daily shipment number of Friday, which is the operating day of the previous day, by the user's operation. In the development device, it becomes a problem when to start the five products a, and the user must input a condition for distributing the five products a to each operation day of the process in the development device. No. For example, a condition may be entered such that the five products a are distributed one day before and two days before the temporary work day, that is, two and one on Thursday and Friday, respectively, For example, a condition is input that is distributed one by one on a plurality of operating days from Monday to Friday. As described above, in the development device, the user has to input the conditions in order to cope with the difference in the work form of the operator between the plurality of production processes, which is troublesome. In addition,
As shown in the figure, finally, the number of devices per day is averaged within the target operation period. On the other hand, according to the present embodiment, the production plan creation device sets the calendar (representing the work mode) and the operation time of the post-process and the calendar and the operation time of the own process as production conditions for each production process. have. Therefore, according to the present embodiment, the user does not have to perform a special operation of inputting a condition in order to cope with the work mode difference between the plurality of production processes, and the work mode difference of the worker between the plurality of production processes. Can be automatically dealt with. For example, in a production plan creation device,
As shown in FIG. 22, when Saturday, which is originally a non-working day, is a temporary work day in the post-process, the number of shipments of the own process, Friday, which is the working day immediately before the temporary work day in the post-process, is: Automatically, the post-process is the sum of the number of products required on that Friday and the number of products required on Saturday, which is a temporary work day.
That is, the number of surplus products is distributed to the number of devices on Thursday and the number of devices on Friday in the own process at a predetermined ratio. Finally, the number of daily processes in the process is averaged over the target operation period. The technique of having a work calendar for each production process can be implemented independently of the technique of managing a plurality of products individually and in association with the time of day. Furthermore, according to the present embodiment, an effect is obtained that the use order and use time of each component used in each product can be known. Since the development device does not directly store the device start time and the part use time in each production process, as shown in FIG. 23, a plurality of types of products a and b are In this case, the use order and use time of the component α of the product a and the component β of the product b are not known. In contrast, according to the present embodiment, as shown in FIG.
In-process time of each product a, b in each process and each component α,
Since the use time of β is directly correlated, the use order and use time of each of the components α and β can be known in the same manner as the device order and device time of the products a and b.

The embodiment of the present invention has been described in detail with reference to the drawings. In addition, various modifications and alterations based on the knowledge of those skilled in the art can be made without departing from the scope of the claims.
The present invention can be implemented in an improved form.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a hardware configuration of a production plan creation device according to an embodiment of the present invention.

FIG. 2 is a functional block diagram showing the production plan creation device.

FIG. 3 is a diagram showing a software configuration of the production plan creation device and a flowchart showing a production plan creation program to be executed by a computer of the production plan creation device.

FIG. 4 is a flowchart showing a state in which a plurality of processing steps in the production plan creation device are sequentially executed.

5 is a diagram showing in a stepwise manner an example of a manner in which a production plan creation process, a work plan creation process, a use plan creation process, and a purchase plan creation process are executed by executing the production plan creation program of FIG. 3;

6 is a diagram showing an execution result of the production plan creation program of FIG.

FIG. 7 is a diagram for explaining load adjustment in a device planning process in FIG. 3;

FIG. 8 is a flowchart showing a program for executing a preceding delay correction step in FIG. 3;

FIG. 9 is a diagram for explaining execution contents of the advance delay correction step.

FIG. 10 is a flowchart showing a program for executing a production frame filling process in FIG. 3;

FIG. 11 is a diagram for explaining the execution contents of the production frame filling process.

FIG. 12 is a functional block diagram showing a simulation device that executes a simulation processing step in FIG. 3;

FIG. 13 is a diagram for explaining execution contents of the simulation processing step.

FIG. 14 is a flowchart showing a program for executing the simulation processing step.

FIG. 15 is a flowchart showing a program for executing a sequence plan creation step in FIG. 3;

FIG. 16 is a diagram for explaining the execution contents of the order plan creation step.

FIG. 17 is a flowchart showing a program for executing a progress management step in FIG. 3;

FIG. 18 is a diagram for explaining execution contents of the progress management step.

FIG. 19 is a diagram for explaining a problem of a production plan creation device (hereinafter, referred to as a “development device”) developed by the present applicant prior to the present invention in order to explain effects of the embodiment. is there.

FIG. 20 is a diagram for explaining effects of the embodiment.

FIG. 21 is a diagram for explaining a problem of the development device in order to explain an effect of the embodiment.

FIG. 22 is a diagram for explaining effects of the embodiment.

FIG. 23 is a diagram for explaining a problem of the development device in order to explain an effect of the embodiment.

FIG. 24 is a diagram for explaining effects of the embodiment.

FIG. 25 is a process chart showing an example of an automobile production process.

FIG. 26 is a block diagram showing a configuration of the development device.

FIG. 27 is a diagram for explaining execution contents of the development device.

FIG. 28 is another diagram for explaining the execution contents of the development device.

FIG. 29 is still another diagram for explaining the execution contents of the development device.

FIG. 30 is a diagram for explaining the contents of load adjustment by the development device.

FIG. 31 is a diagram for explaining the contents of advance delay correction by the development device.

FIG. 32 is a diagram for explaining the contents of a production frame filling process by the development device.

FIG. 33 is a diagram for explaining the contents of creating an order plan by the development device.

FIG. 34 is a diagram for explaining the content of progress management by the development device.

FIG. 35 is a diagram for describing a case where a production plan is changed by the development device.

FIG. 36 is a diagram for explaining an example of the definition of the term “device” in the production plan creation device according to the present invention.

FIG. 37 is a diagram for explaining another example of the definition of the term “device”.

[Description of Signs] 20 Computer 22 Storage device 24 Recording medium 26 Input device 28 Display device 32 Screen

Claims (11)

[Claims] In each of at least one production process in which a plurality of materials are purchased from a supplier, a plurality of products are sequentially produced, and the products are shipped to a destination, the products are produced on each operation day. An apparatus for creating a production plan for, based on shipping conditions of each product when each of the products is shipped from each of the production processes to the shipping destination, the production plan, the plurality of in each of the production processes A production plan creation device that creates each product in association with the time of day, regardless of whether the product type is one or more. 2. The production plan creating apparatus according to claim 1, wherein each of the production steps includes, as a plurality of stages, a mechanism for starting production of each of the products in each of the production steps; Shipping time determination means for sequentially determining the shipping time at which the respective products should be shipped based on the shipping conditions, and the shipping time determining means. A production time planning means for determining a production time at which the production is to be performed on each product based on the shipping time of each product determined by the above and the production lead time of each product in each production process. Creating device. 3. The production plan creating apparatus according to claim 2, wherein each of the production processes includes a plurality of stages of the production process, and further, a purchase of each material of each product from the supplier.
And the use of each purchased material at a predetermined use position in each of the production processes is sequentially performed, and further, based on the work time of each product determined by the work time determination means. A use time determining means for determining a use time at which the use of each of the materials is to be performed; a use time of each of the materials determined by the use time determining means; and each of the materials from the supplier to each of the production steps. A production time determining means for determining a purchasing time at which each material is to be purchased based on a purchasing form of each material at the time of purchasing. 4. The production plan creating device according to claim 3, wherein said at least one production step includes a plurality of production steps which are linked to each other, and wherein said production plan is Each of the plurality of production processes is defined as a target production process, and each of the plurality of production processes, each of which is located on the upstream side of the final process, is created in order in a direction opposite to the flow of the product in the production process. When the shipping time is determined for the target production step, the purchase time is determined by the purchase time determination means for the respective materials of the adjacent production step, which is the production step immediately adjacent to each target production step. After that, based on the purchase time and the shipping mode when each of the products is shipped from the target production process to the adjacent production process, the target production A production plan creation device for determining the shipping time of each product in a process. 5. The production plan creating device according to claim 2, wherein said plurality of products include a plurality of types of products, and said device for determining production time includes a plurality of products. After the in-process time is determined for each of the plurality of products, the time set by the user of the production plan creation device as the time when the types of the products change when the plurality of products are sequentially produced in each production process. First time setting means for changing at least one of a plurality of time points for the products without changing the order of the products in each of the production processes assumed based on the time points. Production planning equipment including. 6. The production plan creation device according to claim 2, further comprising the step of: determining a set time for each of the plurality of products in each of the production processes by the set time determination unit. Based on the total number of products produced on each operation day in each production process set by the user of the production planning device, at least one of a plurality of device times for the products is determined based on the device times. A production schedule creation device including a second production time changing means for changing the production sequence of each of the products assumed in the production process without changing the production sequence. 7. The production plan creation device according to claim 1, further comprising: a production plan created by said production plan creation device.
When a user of the production plan creation device issues a command to change at least one of a plurality of types of condition values used when the production plan creation device creates a production plan, the user thereafter A production plan changing means for steadily changing the condition value and the production plan on the condition that a command for fixing the content of the change is issued, wherein a command for changing the condition value is issued from the user. In the case where the above, the condition value is provisionally changed according to the command,
A tentative change means for tentatively changing and outputting the production plan based on the changed condition value, and, after the output, when the user issues a command to fix the content of the change, A production plan creating device including a production plan changing means having a deterministic changing means for deterministically changing each of the condition value and the production plan. 8. The production plan creating device according to claim 2, further comprising: an order plan creating means for creating an order plan for an order in which the plurality of products are set in each of the production steps. After the in-process time is determined for each of the plurality of products determined by the in-process time determining means, the in-process determining the in-process sequence of the products in each of the production processes based on the plurality of in-process times. The order determining means, and the setting time of each of the products, without changing the determined setting order, such that each of the products can be set in sequence at the same time interval as the predetermined tact time in each of the production processes. A production plan creation device including a sequence plan creation unit having a device for correcting a work time to be corrected. 9. The production plan creating apparatus according to claim 8, wherein the device order determining means determines the device time for each of the plurality of products in each of the production processes by the device time determining means. Provisional work order determining means for determining a work order in each of the production steps as a provisional work order based on a plurality of work times for the products; and the plurality of products are sequentially produced in each of the production steps. Based on what is set by the user of the production plan creation device as a pattern in which the products are arranged at the time, based on the final work order determining means for determining the final work order by changing the provisional work order. Production planning equipment including. 10. The production plan creation device according to claim 1, further comprising: after a production plan is created by said production plan creation device,
When the at least one production process is being executed in accordance with the production plan, an actual state of each stage in each of the production processes is acquired in association with a time in one day, and the actual state and the production plan are acquired. A production plan creation device that includes production state output means for associating the respective states with the times of the day and outputting the states side by side. 11. In each of at least one production process in which a plurality of materials are purchased from a supplier, a plurality of products are sequentially produced, and the products are shipped to a destination, the products are produced on each working day. A method for creating a production plan for, based on shipping conditions of each product when each product is shipped from each production process to the shipping destination, the production plan, the plurality of in each of the production processes Irrespective of whether there is only one product type or a plurality of product types, each of the products can be read by the computer to be executed by a computer in order to carry out a production plan creation method in which the product is created in association with a time of day. Recording medium for production plan creation program recorded in.