JP3923509B2 - Production management apparatus, production management program, and production management method - Google Patents

Description

  The present invention relates to a production management device, a production management program, and a production management method, and in particular, a production management device capable of suitably performing production management of a material requirements plan (hereinafter referred to as “MRP”), The present invention relates to a production management program, a computer-readable storage medium recording the production management program, and a production management method.

  Conventionally, the MRP method has been used as a production management method for determining the amount of materials to be ordered and the ordering timing from the bill of materials and inventory information on the premise that a company's production plan is achieved. This approach, instead of replenishing past usage, captured the anticipated demand in advance and reduced inventory and eliminated shortages at the same time. As a result of directly procuring materials from customer orders and demand forecasting, production planning was greatly improved.

  However, in the previous MRP production management system, only actual performance data can be entered when entering results, and if the actual results are below the plan, additional production instructions may be issued even if they are not actually required. There was a problem that a procurement slip was issued.

With respect to such a problem, a production data management method for managing production data about a production plan and its execution status by an information processing device, and in particular, actual performance data (absolute performance data) at the time of a production plan elimination process There has been proposed a method using virtual performance data (virtual performance data) of a concept different from (see Patent Document 1).
Japanese Patent No. 3055993

  According to the invention disclosed in Patent Document 1, when the plan data is erased, the virtual order data is erased, so that the preconditions for the next order quantity data calculation change, and an unnecessary slip And the generation of instructions can be suppressed to some extent.

  However, even when the method of Patent Document 1 is used to input virtual actual data at an arbitrary timing and try to calculate the order quantity data using the MRP production management system, the virtual actual data is less than the planned data. Even if the person in charge at the site determines that it can recover after the next process based on past experience, etc., the order quantity data is calculated based on the planned data and the predetermined virtual performance data. There was an inconvenience that a slip corresponding to the shortage of the plan was issued.

  The present invention provides a production management apparatus, a production management program, and a computer in which a production management program is recorded that can suitably perform production management by newly introducing the concept of virtual inventory in order to eliminate such inconvenience. An object is to provide a readable storage medium and a production management method.

  Furthermore, when the defect remaining rate (yield rate) of the execution item of each process can be predicted in a series of processes of a lot, additional ordering of execution items of the process in which the actual data is input from the series of processes The purpose is to automatically calculate the virtual inventory quantity of the execution item that is necessary to make the value zero.

  Furthermore, it is possible to set a virtual handling limit rate as the maximum value of the ratio of the virtual inventory that can be assumed for each execution item of each process, and the ratio of the calculated virtual inventory quantity to the completion planned quantity When the value is larger than the virtual handling limit rate, it is intended to notify that effect.

  Furthermore, when there is a virtual inventory of the execution item that was set in the previous process at the stage when the final input actual value of the execution item was input in a certain process, the virtual inventory of the execution item of the previous process is stored. The purpose is zero.

  Furthermore, for example, in the case of repeatedly producing a product whose quality changes slightly depending on the lot, such as assembly of precision machine parts, etc., when excess inventory occurs in the execution item in the process in the middle of a series of processes of a lot, The purpose is to make it possible to designate that the surplus stock is not used as the stock of the next lot but to be used in the lot.

  In order to solve the above problems, the present invention provides the following.

(1) A production management device based on a material requirements plan for calculating the quantity of items to be ordered based on the inventory data of the items included in the product bill of materials,
Regarding the execution items of the process included in the production plan, a completion result data input means for receiving input of completion result data representing the completion result quantity;
Virtual inventory data input means for receiving input of virtual inventory data representing the virtual inventory quantity of the execution item;
Inventory data update means for updating inventory data of the execution item based on completion result data received by the completion result data input means;
Order quantity data calculation means for calculating the quantity of the execution item to be ordered based on the virtual inventory data received by the virtual inventory data input means and the inventory data updated by the inventory data update means. Production management device.

  According to the invention of (1), the production management device accepts input of completion record data representing the completion record quantity regarding the execution item of the process included in the production plan, and virtual inventory data representing the virtual inventory quantity of the execution item Is received, the inventory data of the execution item is updated based on the received completion record data, and the amount of the execution item to be ordered is calculated based on the received virtual inventory data and the updated inventory data. To do.

  As a result, the production management apparatus accepts input of completion record data for the execution items of each process in the execution target items of the production plan. The inventory data of the execution item is updated based on the received completion result data. Here, even if the completed result falls below the plan, if the person in charge at the site determines that it can be recovered after the next process based on past experience, etc., input virtual inventory data reflecting the degree of recovery Can be accepted. Since the production management device calculates the next order quantity using the virtual inventory data that has received the input and the updated inventory data, the order quantity that reflects the degree of recovery is calculated.

  As a result, in order quantity data calculation after receiving the input of the virtual inventory data, it is assumed that there is inventory for the quantity that the site manager has determined to be able to recover. The inconvenience that a slip is issued even when it is determined that it can be recovered after the next process based on past experience or the like can be solved.

(2) A production management device based on a material requirement plan for calculating the quantity of items to be ordered based on the inventory data of the items included in the product bill of materials,
Regarding the execution items of the process included in the production plan, a completion result data input means for receiving input of completion result data representing the completion result quantity;
Input result data input means for receiving input of input result data representing the input result quantity of the execution item;
In the next material order quantity data calculation based on the completion record data, the input record data, the input plan data indicating the planned input quantity of the execution item, and the yield data of the execution item. Virtual inventory data calculation means for calculating virtual inventory data representing virtual inventory quantity of the execution item to make the additional order quantity of the execution item zero,
A production management apparatus comprising: virtual stock data display means (display means) for displaying the virtual stock data on a display unit.

  According to the invention of (2), the production management device accepts input of completion record data representing the completion record quantity regarding the execution item of the process included in the production plan, and the input record representing the record record quantity of the execution item. Accepts data input, and based on the completion record data, the input record data, the input plan data indicating the planned input quantity of the execution item, and the yield rate data of the execution item In order quantity data calculation, virtual inventory data representing the virtual inventory quantity of the execution item for making the additional order quantity of the execution item zero is calculated, and the virtual inventory data is displayed on the display unit.

  As a result, when the yield rate of the execution item of the process is predictable, the input record data and completion record data inputted by the person in charge at the site, and the yield rate of the execution item of the process Based on this, the virtual inventory data necessary for making the additional order quantity of the execution item zero can be notified to the person in charge at the site.

  As a result, the person in charge of the site can evaluate the reported virtual inventory data and confirm it when it is judged to be appropriate by comparing it with experience. You can also modify the data. In this way, by calculating necessary virtual inventory data from the production management device each time and giving suggestions to the person in charge, the person in charge etc. makes a judgment with reference to the calculated value. Can do.

(3) Input of virtual handling limit rate data as the maximum value of the ratio of the virtual inventory data that can be assumed to the completed plan data representing the planned completed quantity for each execution item of the process included in the production plan Virtual handling limit rate data input means for accepting,
When the ratio of the virtual inventory data of the execution item calculated by the virtual inventory data calculation means to the completion plan data is larger than the virtual handling limit rate data, a message display means (display) The production management device according to (2), further comprising:

  According to the invention of (3), the production management device is configured such that, for each execution item of the process, the maximum value of the ratio of the virtual inventory data that can be assumed to the completion plan data representing the planned completion quantity, The virtual handling limit rate data is received, and when the ratio of the virtual inventory data of the execution item to the completion plan data is larger than the virtual handling limit rate data, a message to that effect is displayed.

  Thus, the production management apparatus can accurately notify the person in charge at the site or the like that the calculated quantity of the virtual inventory is required exceeding the virtual handling limit rate.

  As a result, the person in charge at the site can accurately avoid setting the virtual inventory data that cannot be recovered beyond the virtual handling limit rate, and can issue the necessary additional order slip.

  (4) In the process included in the production plan, in response to receiving the input of all the input result data of the execution item, the virtual of the execution item of the previous process stored in the previous process of the process receiving the input The production management device according to (2) or (3), further comprising means for setting the virtual inventory data to zero when there is inventory data.

  According to the invention of (4), in response to receiving input of all input performance data of execution items in the process, the production management device stores the input in the process preceding the process that received the input. When there is virtual inventory data of the execution item of the previous process, the virtual inventory data is set to zero.

  As a result, when virtual inventory data exists in the execution item executed in the previous process of each process, the virtual inventory data is received at the timing when the input of all the input record data of the execution item of each process is finished. By making the data zero, it is possible to avoid the occurrence of calculation errors due to the virtual inventory data stored for convenience in the next material order quantity data calculation of the previous process.

(5) In a series of processes related to a predetermined lot included in the production plan, means for receiving input of in-lot use specifying data for specifying use of the excess inventory of execution items of the process in the predetermined lot Prepared,
Regarding the execution item of each process related to the predetermined lot, when the completion result of the execution item more than the planned completion quantity occurs in the previous process of each process, the input result data input means The production management apparatus according to any one of (2) to (4), wherein when input of use designation data is received, input of input record data is received exceeding input plan data of execution items of the process.

  According to the invention of (5), in the series of steps relating to the predetermined lot included in the production plan, the production management device designates the use of the excess inventory of the execution items of the step in the predetermined lot. Accepting input of internal use designation data, and regarding the execution item of each process related to the predetermined lot, when the execution item of the execution item more than the planned completed quantity occurs in the previous process of the process, the input When the input of the in-lot use designation data is received, the result data input means receives the input of input result data exceeding the input plan data of the execution item of the process.

  As a result, for example, when assembling precision machine parts, etc., when repeatedly producing products whose quality changes slightly depending on the lot, etc., when excess inventory occurs in the execution item in the middle of a series of processes of a lot In addition, it is possible to designate that the surplus stock is used in the lot without being the stock of the next lot.

(6) A computer as a production management device based on a material requirements plan that calculates the quantity of items to be ordered based on the inventory data of the items contained in the product bill of materials.
Completed result data input means for accepting the input of completed result data representing the completed result quantity for the execution item of the process included in the production plan,
Virtual inventory data input means for receiving input of virtual inventory data representing the virtual inventory quantity of the execution item,
Inventory data updating means for updating inventory data of the execution item based on completion result data received by the completion result data input means; and
The virtual inventory data input means functions as order quantity data calculation means for calculating the quantity of the execution item to be ordered based on the virtual inventory data received by the virtual inventory data input means and the inventory data updated by the inventory data update means. Production management program.

  According to the invention of (6), the same effect as (1) can be expected by causing the computer to read and execute the program.

  (7) A computer-readable storage medium storing the production management program according to (6).

  According to the invention of (7), by setting the storage medium in a computer and causing the computer to read the production management program, the same effect can be obtained by causing the same means as in the invention of (1) to function. Can be expected.

(8) A production management method based on a material requirement plan for calculating the amount of items to be ordered based on inventory data of items included in a product bill of materials using a computer,
Regarding the execution item of the process included in the production plan, a completion record data input step for accepting input of completion record data representing the completed record quantity;
A virtual inventory data input step for receiving input of virtual inventory data representing the virtual inventory quantity of the execution item;
An inventory data update step for updating inventory data of the execution item based on the completion record data received in the completion record data input step;
An order quantity data calculation step for calculating the quantity of the execution item to be ordered based on the virtual inventory data received in the virtual inventory data input step and the inventory data updated in the inventory data update step. Production management method.

  By implementing the production management method using the computer of the invention of (8), the same effect as (1) can be expected.

(9) A computer as a production management device based on a material requirements plan that calculates the quantity of items to be ordered based on the inventory data of items contained in the product bill of materials.
Completed result data input means for accepting the input of completed result data representing the completed result quantity for the execution item of the process included in the production plan,
Input result data input means for receiving input of input result data representing the input result of the execution item,
In the next material order quantity data calculation based on the completion record data, the input record data, the input plan data indicating the planned input quantity of the execution item, and the yield data of the execution item. Virtual inventory data calculation means for calculating virtual inventory data representing virtual inventory quantity of the execution item to make the additional order quantity of the execution item zero, and
A production management program that functions as virtual inventory data display means (display means) for displaying the virtual inventory data on a display unit.

  According to the invention of (9), the same effect as in (2) can be expected by causing the computer to read and execute the program.

(10) A production management method based on a material requirement plan for calculating the amount of items to be ordered based on inventory data of items included in a product bill of materials using a computer,
Completed result data input step for accepting the input of completed result data representing the completed inventory quantity for the execution item of the process included in the production plan,
Input result data input step for receiving input of input result data representing the input result of the execution item;
In the next material order quantity data calculation based on the completion record data, the input record data, the input plan data indicating the planned input quantity of the execution item, and the yield data of the execution item. A virtual inventory data calculation step for calculating virtual inventory data representing the virtual inventory quantity of the execution item to make the order quantity of the execution item zero;
And a virtual inventory data display step of displaying the virtual inventory data on a display unit.

  According to the invention of (10), the same effect as in (2) can be expected by operating the computer according to the method.

  According to the present invention, in the production management based on the material requirement plan for calculating the quantity of material to be ordered and the ordering time from the parts bill of the product and the inventory information, the order quantity data is calculated using the MRP production management system at an arbitrary timing. When the actual stock is insufficient compared to the planned data when trying to perform, even if the person in charge at the site determines that it can recover in the next process due to past performance, etc. It is possible to eliminate the inconvenience that a slip corresponding to the shortage is issued. Moreover, only actual execution data can be entered when entering actual results, and if the actual results fall below the plan, additional production instructions will be issued or procurement slips will be issued even if not actually needed. Can do. In addition, because virtual inventory data, virtual performance data, and performance data can be input according to the actual situation of the actual production site, a production management device that can perform production management more realistically, for production management It is possible to provide a computer-readable storage medium storing a program, a production management program, and a production management method.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. This is merely an example, and the technical scope of the present invention is not limited to this.

  FIG. 1 is a block diagram showing a configuration of a production management apparatus 1 according to an example of a preferred embodiment of the present invention. The production management apparatus 1 of the present invention is preferably realized using a computer. The control means 11, the storage means 12, the display means 14, and the input means 13 are connected via the bus 15, and the control means 11 may be constituted by a CPU (Central Processing Unit), and controls the entire production management apparatus. For example, by reading and executing a program stored in the storage means 12, various means described later are realized in cooperation with these hardware.

  The control means 11 includes MRP production management means 111. The MRP production management unit 111 includes an inventory data update unit 112, an order quantity data calculation unit 114, and a virtual inventory data calculation unit 116.

  The storage unit 12 can be realized by a hard disk, a semiconductor memory, or the like, and stores ordered part information and other information necessary for a production management device. The input unit 13 can be realized by a keyboard, a scanner, or an input receiving unit (for example, LAN) using a communication line. The display means 14 can be realized by a liquid crystal display as a display unit, a cathode ray tube CRT, or the like.

  FIG. 2 is a diagram showing an example of parameters managed by the production management apparatus 1 according to an example of the preferred embodiment of the present invention, and FIG. 3 is an operation of the production management apparatus 1 according to an example of the preferred embodiment of the present invention. It is a flowchart which shows. FIG. 4 is a screen displayed by the display unit 14 of the production management apparatus 1 according to an example of the preferred embodiment of the present invention. An operator such as a person in charge at the site, for example, sees this screen, inputs the actual data by the completed actual data input means 132, inputs the virtual inventory data by the virtual inventory data input means 134, and displays the result on the screen. Can be confirmed.

  In the production management apparatus 1 using the MRP production management means 111, as shown in FIG. 2 to FIG. 4 as an example, actual data and virtual inventory are input to the production plan for each process calculated in the previous requirement calculation. It is configured to accept. As shown in FIG. 2, a certain product is manufactured from the material X according to the steps of the primary A1, the secondary A2, and the final A3. The production plan is 130 pieces in the material state, but considering the yield rate, the plan is 120 pieces in the primary A1 step, 110 pieces in the secondary A2 step, and 100 pieces in the final step A3. Complete.

  For example, as shown in FIG. 4, it is assumed that the process A1 is completed at the work instruction number WW00123 (step S110). At that time, it is assumed that the completion record data of the process A1 is 118 pieces. Conventionally, when 118 input is received as completion record data, in the next order quantity data calculation, the quantity and order of materials to be ordered based on the completion record data, bill of material data, and inventory data received. The time was determined. In this case, even if it is determined that the person in charge at the site can recover in the next A2 or A3 process based on past experience, etc., the calculation is based on the plan data and the completion record data, and it is insufficient for the plan. There was an inconvenience that a slip for that amount was issued.

  In the production management apparatus 1 according to an example of a preferred embodiment of the present invention, as shown in FIG. 4, a column for inputting virtual inventory data is provided in addition to a column for inputting actual data. For example, after the process A1 is completed, the completion record data input unit 132 accepts input 118 as completion record data (step S120). Furthermore, when it is determined that the person in charge at the site can recover after the subsequent process based on past experience or the like (step S130), the virtual inventory data input means 134 accepts input of 2 as virtual inventory data (step S140). ). If it is determined that recovery is not possible, the person in charge does not input virtual inventory data. Of course, when it is considered that partial recovery is possible, the virtual inventory data input unit 134 may accept input of 1 as virtual inventory data.

  Based on the completion record data received by the completion record data input unit 132, as shown in FIG. 4, the display unit 14 displays 118 as the record data (step S150). Further, based on the virtual inventory data received by the virtual inventory data input means 134, the display means 14 displays 2 as the virtual inventory data as shown in FIG. 4 (step S150). If the input of virtual inventory data is not accepted, the display unit 14 displays a blank as virtual inventory. When the press of the input button by the person in charge at the site who sees the displayed data is accepted, the inventory data update unit 112 captures the data. When the pressing of the cancel button is accepted (step S160), the process returns to step S120. Of course, the display of this screen may be terminated at this timing.

  Based on the completion record data received, etc., the inventory data update unit 112 updates the inventory data for MRP production management (step S170). Further, the order quantity data calculation unit 114 calculates the order quantity for MRP production management assuming that there is 2 as inventory based on the virtual inventory data in addition to the updated inventory data (step S185). Thereafter, the production management device 1 verifies whether there is a missing part (step S190). As a result, since it is the same as the planned completion quantity of 120, the shortage is 0, and the production management device 1 Do not issue.

  On the other hand, in the case where virtual site data input is not accepted, such as when the person in charge at the site has determined that recovery is not possible, the inventory data update unit 112 performs MRP production management based on the completed record data received. Stock data is updated (step S170). Further, the order quantity data calculation unit 114 calculates an order quantity for MRP production management based on the updated inventory data (step S180). As a result, in the example of FIG. 4, since the updated inventory data is 118 with respect to the planned completed quantity 120, the shortage is 2, and the production management apparatus 1 issues two additional slips. (Step S195).

  When the above processing is completed, the production management device 1 prepares to receive input of the next record data (step S200). Note that, as in the example of FIG. 2, when it is possible to recover at the next A2, the completion record data input unit 132 accepts input of 110 as completion record data. Further, even in the next step A3, if it is as planned, the completion record data input means 132 accepts 100 inputs as completion record data.

  By the means as described above, the production management apparatus 1 according to the present invention can suitably perform production management suited to the actual situation.

  Next, a production management apparatus 1 according to another example of the preferred embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a flowchart showing a virtual inventory data calculation process performed by the production management apparatus 1 according to another example. 6 to 8 are diagrams showing results data input screens displayed by the production management apparatus 1 according to another example.

  As shown in FIG. 5, the completion record data input means 132 of the production management apparatus 1 first receives input of completion record data (step S310). Specifically, for example, as shown in FIG. 6, the completion record data input unit 132 accepts input of 63 as the completion record data in step A1. Furthermore, the input result data input means 133 of the production management apparatus 1 accepts 70 inputs as input result data (step S320). In this example, it is assumed that, among the planned input quantities 130 shown in FIG. That is, another 60 planned inputs remain, and 57 completed achievements are required to reach 120, which is the completed planned quantity.

  Next, the virtual inventory data calculation means 116 of the production management apparatus 1 walks the remaining input plan data 60 based on the completion record data 63, the input record data 70, and the yield rate 92% that have been accepted. When the completion results are accumulated at a yield rate of 92%, virtual inventory data required to reach the completion planned quantity 120 is calculated (step S330).

  Specifically, the final completion record 118.2 is calculated by adding 63 to 55.2 obtained by multiplying 60% by 92%, which is the difference from the completed planned quantity 120 (2) Get. In other words, if the remaining input plan is executed with the assumed yield rate as it is, it will be understood that if the virtual inventory is 2, additional ordering of the execution item can be avoided in the next order quantity calculation.

  Next, the production management device 1 checks whether or not the numerical value 2 as the virtual inventory data calculated this time is equal to or less than the virtual handling limit rate with respect to the completed planned quantity (step S340). Here, the virtual handling limit rate is the maximum value of the ratio of the virtual inventory data that can be assumed to the execution item of the process to the completed plan data that represents the planned completed quantity. Here, when the ratio of the virtual inventory data calculated in step S330 to the completed plan data exceeds the virtual handling limit rate, it is impossible to make a recovery in a later process.

  Next, the display unit 14 of the production management device 1 displays 2 as the calculated virtual inventory data as shown in FIG. 6 as a display screen when the result of the confirmation in step S340 is equal to or less than the virtual handling limit rate. Is displayed (step S350). In this way, the person in charge of the site who visually recognizes the virtual inventory data displayed by the display means 14 determines whether this numerical value is appropriate, and adopts the virtual inventory data 2 as it is when it is determined that it is appropriate. can do. In this way, the production management device 1 can calculate and display the data based on the performance data that has received the input of the required amount of virtual inventory. Therefore, the person in charge at the site can determine the virtual inventory data to be finally input with reference to the displayed numerical value.

  Such a virtual handling limit rate can be set in each step. For example, in the example shown in FIG. 8, if the virtual inventory data is 3% in the A1 process, 2% in the A2 process, and 1% in the A3 process, it is set so that recovery in the subsequent process is possible. . When the production management apparatus 1 accepts pressing of the input button (virtual handling limit rate data input means 136), it stores and sets these virtual handling limit rate data. The production management apparatus 1 calculates and displays virtual inventory data within a range that does not exceed the virtual handling limit rate set here.

  Here, when the ratio of the virtual inventory to the completed planned quantity calculated by the virtual inventory data calculation means 116 exceeds the virtual handling limit rate, the display means 14 displays the virtual handling limit rate as shown in FIG. A dialog screen for notifying that virtual inventory data cannot be set is displayed (step S360). In the example of this figure, since it is the input record data 70 and the completion record data 61, 4 virtual stocks are necessary to satisfy the completed planned quantity 120, and the ratio of the virtual stock 4 to the completed planned quantity 120 is 3 .3%, exceeding the virtual handling limit rate of 3%. Therefore, one of the virtual stocks 4 is notified that it cannot be set as an unimaginable virtual stock.

  In such a case, the production management apparatus 1 may automatically issue a slip for performing the additional order 1 or issue the additional slip when the OK button is pressed on the dialog screen of FIG. Alternatively, it may wait for the input of the person in charge at the site.

  Next, the production management device 1 determines whether or not the input of all the input result data has been completed (step S370). For example, in the example of FIGS. 2 and 6, it is determined whether or not 130 has been input as accumulated input result data.

  If it is determined in step S360 that the input of all input record data has been completed, the production management apparatus 1 sets the virtual inventory set in the previous process to zero (step S380). Specifically, for example, in the example of FIG. 2, when it is determined that the virtual inventory data 2 is set in the process A1 and the process advances and accumulates as input result data of the process A2 and 120 inputs are completed, The second virtual inventory data is set to zero. As a result, in the next additional order quantity data calculation, it is possible to avoid the occurrence of a calculation error due to the presence of the virtual inventory of A1.

  On the other hand, if it is determined in step S370 that the input of all input record data has not been completed, the production management apparatus 1 moves the process to step S390.

  Next, the production management device 1 accepts an input as to whether or not to end a series of virtual inventory data calculation processing (step S390). If an input to be completed is accepted, the above-described processing is terminated. If not, the processing returns to step S310 and waits for the input of the next record data.

  Next, processing performed by the production management apparatus 1 according to another example of the preferred embodiment of the present invention will be described with reference to FIG. FIG. 9 is a screen for accepting designation of use within a lot. Even if surplus inventory occurs in the execution item in the middle of the manufacturing process such as assembly of precision machine parts, if it is turned to the inventory to be used for the next lot, a subtle change in quality due to the so-called lot difference will be the finished product. May be adversely affected.

  The production management device 1 can specify that such a lot is used up without using the process of turning the generated surplus stock to the stock for the next lot. In the example shown in FIG. 9, for example, in the work instruction number (lot number) WW00123, use in a lot is specified by accepting an input of a check box, and in WW00124, an input screen when such specification is not made Is shown. When the production management apparatus 1 accepts the pressing of the input button on this screen, it accepts this setting and reflects it in subsequent inventory calculations.

  Although the above example demonstrated the production management apparatus 1, it can implement | achieve by installing the program for production management which has the means demonstrated about the production management apparatus 1 in a computer, and making the computer function as the said means. it can.

  It can also be realized by causing a computer to read a computer-readable storage medium recording such a production management program, installing the production management program, and causing the computer to function as the means.

  It can also be realized by installing a computer program for executing the equivalent means in a computer having the same performance as the production management apparatus 1 and using it by the method described above.

  As mentioned above, although demonstrated using embodiment of this invention, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention. For example, the production management apparatus has been described as an example of a computer, but a system employing a digital signal processor instead of a CPU may be used.

It is a block diagram which shows the structure of the production management apparatus 1 which concerns on an example of suitable embodiment of this invention. It is a figure which shows the use condition of the production management apparatus 1 which concerns on an example of suitable embodiment of this invention. It is a flowchart which shows operation | movement of the production management apparatus 1 which concerns on an example of suitable embodiment of this invention. It is a figure which shows the screen on which the display means 14 of the production management apparatus 1 which concerns on an example of suitable embodiment of this invention is displayed. It is a flowchart which shows the virtual inventory data calculation process which the production management apparatus 1 which concerns on another example of suitable embodiment of this invention performs. It is a figure which shows the performance data input screen which the production management apparatus 1 which concerns on another example of suitable embodiment of this invention displays. It is a figure which shows the performance data input screen which the production management apparatus 1 which concerns on another example of suitable embodiment of this invention displays. It is a figure which shows the performance data input screen which the production management apparatus 1 which concerns on another example of suitable embodiment of this invention displays. It is a figure which shows the screen which receives the use designation | designated in the lot which the production management apparatus 1 which concerns on another example of suitable embodiment of this invention displays.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Production management apparatus 11 Control means 12 Storage means 13 Input means 14 Display means 15 Bus 111 MRP production management means 112 Inventory data update means 114 Order quantity data calculation means 116 Virtual inventory data calculation means 132 Completion result data input means 133 Input result data Input means 134 Virtual stock data input means 136 Virtual handling limit rate data input means

Claims (7)

A production management device based on a material requirements plan that calculates the quantity of items to be ordered based on the inventory data of the items included in the product bill of materials,
Regarding the execution items of the process included in the production plan, a completion result data input means for receiving input of completion result data representing the completion result quantity;
Input result data input means for receiving input of input result data representing the input result quantity of the execution item;
In the next material order quantity data calculation based on the completion record data, the input record data, the input plan data indicating the planned input quantity of the execution item, and the yield data of the execution item. Virtual inventory data calculation means for calculating virtual inventory data representing virtual inventory quantity of the execution item to make the additional order quantity of the execution item zero,
Virtual inventory data display means for displaying the virtual inventory data on the display unit;
Virtual inventory data input means for receiving input of virtual inventory data representing the virtual inventory quantity of the execution item;
Inventory data update means for updating inventory data of the execution item based on completion result data received by the completion result data input means;
Order quantity data calculation means for calculating the quantity of the execution item to be ordered based on the virtual inventory data received by the virtual inventory data input means and the inventory data updated by the inventory data update means. Production management device. A virtual that accepts the input of virtual handling limit rate data as the maximum value of the ratio of the virtual inventory data that can be assumed to the execution plan included in the production plan to the completed plan data that represents the planned completed quantity. Handling rate data input means,
Message display means for displaying a message to that effect when the ratio of the virtual inventory data of the execution item calculated by the virtual inventory data calculation means to the completion plan data is larger than the virtual handling limit rate data; The production management device according to claim 1, further comprising:   In the process included in the production plan, the virtual inventory data of the execution item of the previous process stored in the previous process of the process receiving the input is received in response to receiving the input of all the input result data of the execution item. The production management device according to claim 1, further comprising means for setting the virtual inventory data to zero in a certain case. In a series of processes related to a predetermined lot included in the production plan, the apparatus further includes means for receiving input of in-lot use designation data for designating use of the excess inventory of execution items of the process in the predetermined lot,
Regarding the execution item of each process related to the predetermined lot, when the completion result of the execution item more than the planned completion quantity occurs in the previous process of each process, the input result data input means The production management apparatus according to claim 1, wherein when input of use designation data is received, input of input record data is received beyond input plan data of execution items of the process. In the production management system according to material requirements planning to calculate the amount of material to be ordered on the basis of the stock data of material supplied in the bill,
The finished actual data input means relates execution item process in a production plan, a complete record data input step of Ru is accepting input of the finished record data representing the completion actual quantity,
The closing actual data input means, and poured actual data input step of Ru is accepting input of the input result data representing a charged results of the execution items,
Based on the completion record data, the input record data, the input plan data indicating the planned input quantity of the execution item, and the execution rate yield data of the execution item to the virtual inventory data calculation means and virtual inventory data calculation step of Ru was calculated virtual inventory data representing a virtual stock quantity of the execution items for the additional order quantity of the executed item to zero in material ordering data calculating,
Virtual inventory data display means, a virtual inventory data display step Ru to display the virtual inventory data to the display unit,
Virtual inventory data input means, a virtual inventory data input step of the input of the virtual stock data Ru is accepted that represents a virtual stock quantity of the execution items,
Stock data updating means, and inventory data updating step of Ru to update the inventory data of the execution items, based on the finished record data received,
The order data calculating means, characterized in that to perform said and ordering data calculating step of Ru is calculating the amount of the execution items to be ordered on the basis of the virtual stock data and updated the inventory data, the accepted Production management program.   A computer-readable storage medium in which the production management program according to claim 5 is recorded. Production control apparatus, a method of production control according to material requirements planning to calculate the amount of material to be ordered on the basis of the stock data of the items included in the bill of products,
Completion result data input means, for the execution item of the process included in the production plan, a completion result data input step for accepting input of completion result data representing the completion result quantity;
Input result data input means for receiving input of input result data representing the input result of the execution item , input result data input means ;
The virtual inventory data calculation means, based on the completion record data, the input record data, the input plan data representing the planned input quantity of the execution item, and the yield rate data of the execution item A virtual inventory data calculation step for calculating virtual inventory data representing a virtual inventory quantity of the execution item to make the additional order quantity of the execution item zero in the material order quantity data calculation;
A virtual inventory data display means for displaying the virtual inventory data on the display unit;
A virtual inventory data input means for receiving input of virtual inventory data representing a virtual inventory quantity of the execution item;
An inventory data update step in which inventory data update means updates the inventory data of the execution item based on the completion record data received in the completion record data input step;
Order quantity data calculation means for calculating the quantity of the execution item to be ordered based on the virtual inventory data received in the virtual inventory data input step and the inventory data updated in the inventory data update step A production management method comprising the steps of:

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