CN1277401A - Production plan and order form system - Google Patents
Production plan and order form system Download PDFInfo
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- CN1277401A CN1277401A CN 99108440 CN99108440A CN1277401A CN 1277401 A CN1277401 A CN 1277401A CN 99108440 CN99108440 CN 99108440 CN 99108440 A CN99108440 A CN 99108440A CN 1277401 A CN1277401 A CN 1277401A
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Abstract
The production plan and order form system includes a computer with memory and processor, a demand data base to record the demand amount in the next week; a safety stock module to calculate the safety stock amount in the end of each week set based on the demand amount of the next weeks; a purchase calculation module to calculate the required purchase amount before the next weeks based on the demand of each week, the initial stock and the safety stock.
Description
The present invention system provides a kind of production schedule form ordering system that is executed in a computer.
Usually manufacturer is to utilize purchase order (PurchaseOrder to the mode of supplier (Vendor) buying material; PO), manufacturer can calculate purchase order and places an order according to the lead time (Lead Time) of production demand, safety stock and material purchases.The content of purchase order includes friendship phase, quantity and price.Supplier must deliver goods at official hour according to purchase order, in case goods enters in the warehouse of manufacturer and after obtaining receipt, manufacturer just pays the bill to supplier according to the price on receipt and the purchase order.Because the production demand of manufacturer usually changes because of market supply and demand, therefore purchase order also often has change (Change) and the situation of resetting (Reschedule), these situations that change purchase order not only cause burden huge in the purchasing management, for supplier, more cause the puzzlement in dilivery date, quantity and the gathering.
See also Fig. 1, Fig. 1 is the functional-block diagram that calculates the method 10 of purchase order usually.Usually the method 10 of calculating purchase order comprises the calculating 14 of the calculating production scheduling on the 12nd, of all production schedulings and the calculating 16 of a purchase order.The calculating 12 of week production scheduling is with the materials demand that decides weekly, the calculating 14 of day production scheduling is with the materials demand that decides every day, and 16 of the calculating of purchase order are with deciding quantity, the friendship phase that need purchase this material on the purchase order, sending day and price.
Please refer to table 1 to table 3, table 1 is the data structure of Fig. 1 week production scheduling 11, and table 2 be the data structure of day production scheduling 13 in first week of all production schedulings of table 1, and table 3 is the data structure of purchase order 15 in first week of all production schedulings of table one.The week calculating 12 of production scheduling comprises all scheduling dates 26, production demand 28, and the calculating of materials demand 30.The scheduling date 26 in week is to rise in unit first during by scheduling week as the time to separate division with a week, and production demand 28 is given by client (Client), and 30 quantity according to production demand 28 of materials demand multiply by the number that every machine consumes this material decides.The calculating 14 of day production scheduling comprises a day scheduling date 32, and production demand 34, and the calculating of materials demand 36 all are that unit is ranked or calculates with the every day.The calculating 16 of purchase order comprises the usefulness of a PO number 38 as current transaction identification, one PO hands over the date of phase 40 expression delivery, one PO quantity 42, the remaining number of this material after one end of term stock 44 expression is produced and finish every day, one PO sends days 46 and hands over the phase 40 decide with the lead time according to PO, and a PO price 48 according to every PO separately and supplier's agreed-upon price and deciding.
The machine of a certain type of a manufacturers produce for example, every machine need consume two of a certain materials that supplier provides, and the lead time of these material purchases is three days, and minimum amount of purchase is three, and the safety inventory of every day is two.The account form of ending inventory 44 deducts the materials demand on the same day according to the ending inventory of the previous day and decides, and the quantity 42 that whether PO need place an order and need place an order the same day deducts the remaining quantity of materials demand on the same day according to ending inventory the previous day and decides, if, just must placing an order to be replenished than two of the safety inventories of this material every day also after a little while, this quantity make the ending inventory 44 of every day at least greater than two of safety inventories.For example, the ending inventory 3 (table 3) that 1/4 day PO number needs was looked 1/3 decides with 1/4 day materials demand 2 (tables 2), 3 deduct 2 only surplus 1 low than 2 of minimum safe stocks, it is additional therefore must to place an order.Original only the need bought 1 condition that just can meet 2 of minimum safe stocks more, but once minimum purchase volume must be at least three, and therefore 1/4 day PO quantity is 3, adds remaining 1, and therefore end of term stock on the 1/4th is 4.The PO quantity on other dates and ending inventory also are algorithms and deciding according to this.And PO sends the lead time that day 46 was pushed away by the foundation PO friendship phase 40 three days forward.
Usually when the method 10 of calculating purchase order placed an order to supplier, every day must be calculated the materials demand 36 and ending inventory 44 on the same day by manufacturer, and handed over 40 first three day of phase to send PO according to PO and give this supplier.Take place because the production capacity change that the market supply and demand change is caused often makes PO have and changes with the situation of resetting everyday, this phenomenon not only causes burden huge in manufacturer's purchasing management, more has additional supply of the puzzlement of merchant in the supply of material, friendship phase and gathering.
Therefore fundamental purpose of the present invention is to provide a kind of production schedule form ordering system that is executed in a computer, to address the above problem.
A kind of production schedule form ordering system that is executed in a computer provided by the invention, this computer system includes a storer and is used for storage data and program, and one processor be used for carrying out the program that is stored in this storer, this system of system is according to interior demand for a stock material of a plurality of units period in the scheduled period, calculate in this scheduled period each unit period begin before the required purchase volume of buying, this system includes: a safety inventory module storage area, be arranged in this storer, be used for storage safe stock module, so as according to the predetermined number of per unit after the period continuously the demand of unit period calculate the per unit period when finishing the safety stock that should retain; And one buying calculate the module storage area, be arranged in this storer, be used for storing buying and calculate module, so that according to the demand of per unit period, tank farm stock during beginning and the safety stock that institute should retain when finishing calculate each unit period and begin the preceding required purchase volume of buying.
Purpose of the present invention, feature and advantage will be described hereinbelow in detail with reference to the accompanying drawings in conjunction with the embodiments.
Brief Description Of Drawings
Fig. 1 is the functional-block diagram that calculates the method for purchase order usually;
Fig. 2 is the functional-block diagram of production schedule form ordering system of the present invention;
Fig. 3 is the process flow diagram that Fig. 2 production schedule form ordering system produces production schedule order.
Table 1 calculates the data structure figure of all production schedulings of the method for purchase order for Fig. 1.
Table 2 is the data structure figure of day production scheduling in all first weeks of production scheduling of table 1.
Table 3 is the data structure figure of the purchase order in all first weeks of production scheduling of table 1.
Table 4 is the data structure figure of the production schedule order of Fig. 2 production schedule form ordering system.
See also Fig. 2 and table 4, Fig. 2 is the functional-block diagram of production schedule form ordering system of the present invention, and table 4 is the data structure of the production schedule order 61 of Fig. 2 production schedule form ordering system 60.Production schedule form ordering system 60 of the present invention is to be executed in a computer 62, and computer 62 comprises a storer 64 and is used for storage data and program, and a processor 66 is used for carrying out the program that is stored in the storer 64.Production schedule form ordering system 60 is according to interior demand for stock material of the scheduled period in a plurality of weeks, calculates to begin the preceding required purchase volume of buying in this scheduled period each week.Production schedule form ordering system 60 comprises a quantity required database 68, one safety inventory modules 70, and a buying calculating module 72 all is stored in the storer 64.Quantity required database 68 is the materials demand amounts that are used for writing down each week in the scheduled period.Safety inventory module 70 can according to the demand in continuous two week after each week calculate one week demand mean value, then again according to this mean value set when finishing in each week the safety stock that should retain.It is to be used for demand according to each week that module 72 is calculated in buying, and tank farm stock during beginning and the safety stock that institute should retain when finishing calculate and begin the preceding required purchase volume of buying each week.
Quantity required database 68 comprises produces date 74, data such as production demand 76 and materials demand 77 in week.Producing the date 74 week is that unit rising in first week as the time during by scheduling separates division with a week, and production demand 76 is given by the client, and 77 of materials demands calculate according to production demand 76 and get.The safety stock that safety inventory module 70 is calculated ending inventory 78 just weekly is decided by the mean value of the materials demand 77 in continuous two weeks behind the jede Woche.The required quantity purchase of buying 80 was to add that by ending inventory weekly materials demand deducts the ending inventory in last week and decides before buying calculating module 72 began in each week of calculating.
Be illustrated production schedule form ordering system 60 decisions of the present invention quantity purchase 80 weekly at this measure one example.The example of being mentioned is supposed a certain manufacturers produce one machine as previously explained, and every this machine need consume two of a certain materials that a certain supplier provides, and the lead time of these material purchases is three days, and minimum amount of purchase is three.The data structure of production schedule order 61 of the present invention includes the usefulness that weekly date of manufacture 74, production demand 76, materials demand 77, ending inventory 78, quantity purchase 80 and BP number 73 is used as current transaction identification, and the commaterial of buying for same supplier is with regard to given same BP number.
Quantity required database 68 is a unit with a week, by 1/1 to 3/19 totally ten two weeks separating to divide and write down the date of manufacture 74 during the scheduling as the time, and according to client's the demand production demand 76 weekly that is ranked, therefore can calculate materials demand 77 according to the material quantity of per unit production demand 76 required consumption, jede Woche production demand 76 be multiply by two just can obtain materials demand 77 weekly.Safety inventory module 70 is according to continuous two weeks materials demand 77 mean value calculation ending inventory 78 weekly after this week, for example, 1/8 ending inventory by 16 of 12 of 1/15 materials demands and 1/22 materials demands average and 14.When buying is calculated module 72 and is finished according to materials demand weekly, stock's (ending inventory in last week just) when jede Woche begins and jede Woche the safety stock that should retain calculated quantity purchase 80 weekly, for example, 1/8 quantity purchase be by 1/8 14 of ending inventories add 1/8 8 of materials demands deduct 1/1 10 of ending inventories and 12, so quantity purchase 80 weekly just can determine out according to above-mentioned same method in the production schedule order 61.
Fig. 3 is the process flow diagram that Fig. 2 production schedule form ordering system 60 produces production schedule order 61.Fig. 3 represents that with flow process Figure 82 flow process Figure 82 includes the following step: step 84 with said method: beginning; Step 86: deposit jede Woche in quantity required database 68 for the demand of a certain stock material
In; Step 88: by safety inventory module 70 decision jede Woches to this stock material the end of term storehouse that should retain
Because the safety stock ending inventory just 78 of production schedule form ordering system 60, calculate according to materials demand 77, and the safety stock of being considered during quantity purchase 80 also thereby according to materials demand 77 calculates, and materials demand 77 is to get according to production demand 76, so quantity purchase of the present invention 80 approaches the actual demand of manufacturer.And production schedule form ordering system 60 with a week be calculate a scheduled period this schedule time begin before the required purchase volume of buying, this scheduled period is greater than the lead time of material purchases, and show the quantity purchase in several weeks continuously, must not consider the lead time when therefore calculating quantity purchase.
Utilize production schedule form ordering system 60 of the present invention production schedule order 61 can be treated as formal purchase order, with above-mentioned example, the quantity purchase in following 12 weeks of each material can once be notified to supplier, and discerned with a BP number 73, in addition owing to production schedule order 61 jede Woches send once, receive the production schedule order 61 in this week as supplier after, the production schedule order 61 of last week promptly cancels automatically, the BP number 73 of production schedule order 61 does not change with jede Woche, only control respectively and distinguish, so supplier does not have the confused situation generation of order yet with version.Need not stipulate the price and the terms of payment in the production schedule order 61, manufacturer and supplier both sides can sign price agreement standard in addition in advance.
The above only is preferred embodiment of the present invention, and all equalizations of being done with claim scope of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (7)
1. production schedule form ordering system that is executed in a computer, this computer system includes a storer and is used for storage data and program, and one processor be used for carrying out the program that is stored in this storer, this system of system is according to interior demand for a stock material of a plurality of units period in the scheduled period, calculate in this scheduled period each unit period begin before the required purchase volume of buying, it is characterized in that this system includes:
One safety inventory module storage area is arranged in this storer, is used for storage safe stock module, so as according to the predetermined number of per unit after the period continuously the demand of unit period calculate the per unit period when finishing the safety stock that should retain; And
The module storage area is calculated in one buying, be arranged in this storer, be used for storing buying and calculate module, so that according to the demand of per unit period, tank farm stock during beginning and the safety stock that institute should retain when finishing calculate each unit period and begin the preceding required purchase volume of buying.
2. production schedule form ordering system as claimed in claim 1 is characterized in that, other includes a quantity required database, is stored in this storer, is used for writing down the demand of each unit period in this scheduled period.
3. production schedule form ordering system as claimed in claim 1 is characterized in that, the per unit period in this scheduled period is a week.
4. production schedule form ordering system as claimed in claim 1, it is characterized in that, this safety inventory module system according to the predetermined number of per unit after the period continuously the demand of unit period calculate the mean value of a unit period demand, then again according to this mean value set the per unit period when finishing the safety stock that should retain.
5. one kind is utilized a computer to produce a method of producing planned order, this computer system includes a storer and is used for storage data and program, and one processor be used for carrying out the program that is stored in this storer, this method system be used for according in a plurality of units period in the scheduled period for the demand of a stock material calculate in this scheduled period each unit period begin before the required purchase volume of buying, it is characterized in that the method for this production schedule order includes:
With a plurality of unit in the scheduled period in the period demand for a stock material deposit this computer in;
Utilize this computer come according to the predetermined number of per unit after the period continuously the demand of unit period calculate the per unit period when finishing the safety stock that should retain; And
Utilize this computer to come demand according to the per unit period, tank farm stock during beginning and the safety stock that institute should retain when finishing calculate each unit period and begin the preceding required purchase volume of buying.
6. method as claimed in claim 5 is characterized in that, the per unit period in this scheduled period is a week.
7. method as claimed in claim 5, it is characterized in that, this safety stock system according to the predetermined number of per unit after the period continuously the demand of unit period calculate the mean value of a unit period demand, then again according to this mean value set the per unit period when finishing the safety stock that should retain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99108440 CN1277401A (en) | 1999-06-14 | 1999-06-14 | Production plan and order form system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99108440 CN1277401A (en) | 1999-06-14 | 1999-06-14 | Production plan and order form system |
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|---|---|
| CN1277401A true CN1277401A (en) | 2000-12-20 |
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| CN 99108440 Pending CN1277401A (en) | 1999-06-14 | 1999-06-14 | Production plan and order form system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6889106B2 (en) | 2002-12-13 | 2005-05-03 | Hon Hai Precision Ind. Co., Ltd. | Master production scheduling management system and method |
| CN1317669C (en) * | 2002-09-04 | 2007-05-23 | 株式会社日立制作所 | Sub-scanning interval adjusting apparatus for multi-beam scanning unit |
| CN107578324A (en) * | 2017-10-17 | 2018-01-12 | 北京迅邦润泽物流有限公司 | The expression and device of large petroleum chemicals e-commerce platform quantity purchase |
| CN108022061A (en) * | 2016-10-31 | 2018-05-11 | 株式会社日立制作所 | Inventory management system and method |
| CN108171440A (en) * | 2018-01-17 | 2018-06-15 | 长安大学 | A kind of hydraulic tube piece management of the processing and production system and method |
| CN109559070A (en) * | 2018-09-21 | 2019-04-02 | 中建科技有限公司深圳分公司 | The equipment production information management method and device of assembled architecture platform |
| CN112036631A (en) * | 2020-08-25 | 2020-12-04 | 广州视源电子科技股份有限公司 | Purchasing quantity determination method, device, equipment and storage medium |
-
1999
- 1999-06-14 CN CN 99108440 patent/CN1277401A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1317669C (en) * | 2002-09-04 | 2007-05-23 | 株式会社日立制作所 | Sub-scanning interval adjusting apparatus for multi-beam scanning unit |
| US6889106B2 (en) | 2002-12-13 | 2005-05-03 | Hon Hai Precision Ind. Co., Ltd. | Master production scheduling management system and method |
| CN108022061A (en) * | 2016-10-31 | 2018-05-11 | 株式会社日立制作所 | Inventory management system and method |
| CN107578324A (en) * | 2017-10-17 | 2018-01-12 | 北京迅邦润泽物流有限公司 | The expression and device of large petroleum chemicals e-commerce platform quantity purchase |
| CN108171440A (en) * | 2018-01-17 | 2018-06-15 | 长安大学 | A kind of hydraulic tube piece management of the processing and production system and method |
| CN109559070A (en) * | 2018-09-21 | 2019-04-02 | 中建科技有限公司深圳分公司 | The equipment production information management method and device of assembled architecture platform |
| CN112036631A (en) * | 2020-08-25 | 2020-12-04 | 广州视源电子科技股份有限公司 | Purchasing quantity determination method, device, equipment and storage medium |
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