Component ordering system and method thereof

Abstract

The invention relates to a component ordering system and a method thereof. Disclosed is a component ordering system comprising: a required preamble time calculation unit for calculating a required preamble time required for each component on the basis of pre-stored ordering data; a security preamble time calculation unit for calculating a security preamble time satisfying the customer order amount on the basis of component data including the required preamble time calculated by means of the required preamble time calculation unit, the component production capacity of a component company, and the number of days required for component movement; and an order confirmation unit for confirming an order amount by calculating a final preamble time on the basis of the required preamble time calculated by means of the required preamble time calculation unit and the secure preamble time calculated by means of the secure preamble time calculation unit.

Description

Technical Field

[0001] The present disclosure relates to a component ordering system and a method thereof, which can confirm an order quantity by managing component-specific lead times and safety stocks during the calculation of the component order quantity. Background Art

[0002] The production activities of a company basically require the system to supply the required items in the required quantity at the required time, and production management systems such as Korean Patent Application Publication No. 10-2006-0007732 have been proposed.

[0003] In addition, recently, when ordering is usually done through IT-based technology, the production plan of the organization company is organized, and the production plan of the company is executed by monitoring the flow of a series of information from the output / purchase of components to the delivery of goods. Various solutions such as supply chain management (SCM), enterprise resource planning (ERP), material requirements planning (MRP), and customer relationship management (CRM) have been developed, and each company uses these technologies to build its own system.

[0004] As one of the overall production management activities of a company, the system for ordering components calculates the order quantity based on the items, the required quantity of items calculated according to the production plan, the current inventory, and the undelivered inventory. Here, when calculating the required quantity of items calculated according to the production plan, the lead time of the components can be considered. In addition, in order to have a stable component flow, multiple pieces of information required for production planning and ordering can be integrated, and an integrated system for automatic ordering can be constructed.

[0005] Meanwhile, traditional component ordering systems manage lead times by component, but do not consider the situation of component companies. For example, in the case of ordering from an overseas vehicle factory to a component factory in Korea, if the order-receiving company supplies components to multiple companies in Korea and other countries, due to the production capacity (capacity) and order volume of the component company, it will take longer to supply components to the overseas factory, and the accuracy of the lead time of the components will be reduced.

[0006] In addition, safety stock is also called buffer stock. When calculating safety stock, variability in production planning and material operations must be addressed. However, applying only arithmetic operations based on quantity and lead time without applying statistical techniques will result in a decrease in the accuracy of the safety stock quantity. The problem of the reduced accuracy of the specific lead time and safety stock quantity of the above components will lead to uncertainty when distributing components from the component company to the local area, which will lead to over-ordering and stock-out problems.

[0007] To solve these problems, a method is needed that takes into account the component production characteristics, component characteristics, component distribution and transportation characteristics, and the situation of the component company, calculates the lead time by combining scenario setting, statistical techniques, and mathematical optimization, and calculates the safety stock by using statistical techniques.

[0008] The above content is only intended to help understand the background of the present disclosure and is not intended to mean that the present disclosure falls within the scope of the prior art known to those skilled in the art. Summary of the Invention

[0009] Technical Problem

[0010] The present disclosure aims to provide a component ordering system and its method, in which the lead time is calculated through statistical techniques and optimization analysis, so as to calculate different final lead times for corresponding components based on the appropriate lead time and safety stock level of each item, and adjust the order quantity of the components to effectively manage the inventory.

[0011] Those skilled in the art should understand that the technical objectives achieved in the present disclosure are not limited to the above technical objectives, and other technical objectives not described herein will be clearly understood from the following description.

[0012] Technical Solution

[0013] To achieve the above object, according to the present disclosure, a component ordering system is provided, including: a necessary lead time calculation unit configured to calculate the necessary lead time required for each component based on pre-stored order data; a safety lead time calculation unit configured to calculate a safety lead time to meet the customer order quantity based on component data including the necessary lead time calculated by the necessary lead time calculation unit, the component production capacity of the component company, and the number of days required for component transportation; and an order confirmation unit configured to calculate a final lead time based on the necessary lead time calculated by the necessary lead time calculation unit and the safety lead time calculated by the safety lead time calculation unit, and confirm the order quantity.

[0014] For example, the order data may include at least one data selected from the group consisting of data on the past number of partial deliveries of each component, data on the storage time of each partial delivery, and data on the number of days required.

[0015] For example, the necessary lead time calculation unit may be configured to: collect pre-stored order data to generate an order data distribution, and calculate the necessary lead time required for each component based on the generated order data distribution.

[0016] For example, the necessary lead time calculation unit may be configured to: generate a plurality of scenarios by stratified sampling from the generated order data distribution, and calculate the necessary lead time required for each component based on the generated plurality of scenarios.

[0017] For example, the necessary lead time calculation unit may be configured to calculate the necessary lead time required for each component according to the scenarios that meet the customer order volume among the generated plurality of scenarios.

[0018] For example, the safety lead time calculation unit may be configured to calculate the order quantity based on the component data, and calculate the inventory quantity through the calculated order quantity.

[0019] For example, the safety lead time calculation unit may be configured to calculate the safety lead time according to the inventory quantity and daily production capacity of the component company calculated.

[0020] For example, the order confirmation unit may be configured to calculate the final lead time by adding the necessary lead time and the safety lead time.

[0021] For example, the order confirmation unit may be configured to: receive a pre-established production plan, and confirm the order quantity based on the calculated final lead time and the received production plan.

[0022] To achieve the above object, according to the present disclosure, there is provided a component ordering method, including: calculating, by the necessary lead time calculation unit, the necessary lead time required for each component based on pre-stored order data; calculating, by the safety lead time calculation unit, the safety lead time that meets the customer order volume based on component data including the necessary lead time, the component production capacity of the component company, and the number of days required for component transportation; calculating, by the order confirmation unit, the final lead time based on the necessary lead time calculated by the necessary lead time calculation unit and the safety lead time calculated by the safety lead time calculation unit; and confirming, by the order confirmation unit, the order quantity based on the calculated final lead time.

[0023] For example, when calculating the necessary lead time, pre-stored order data may be collected to generate an order data distribution, and the necessary lead time required for each component may be calculated based on the generated order data distribution.

[0024] For example, when calculating the necessary lead time, a plurality of scenarios may be generated by stratified sampling according to the generated order data distribution, and the necessary lead time required for each component may be calculated based on the generated plurality of scenarios.

[0025] For example, when calculating the necessary lead time, the necessary lead time required for each component may be calculated according to the scenarios that meet the customer order volume among the generated plurality of scenarios.

[0026] For example, when calculating the safety lead time, the order quantity can be calculated based on component data, and the inventory level can be calculated based on the calculated order quantity.

[0027] For example, when calculating the final lead time, the final lead time can be calculated by adding the required lead time and the safety lead time.

[0028] Advantageous Effects

[0029] According to the component ordering system and method of the present disclosure, the lead time is calculated through statistical techniques and optimization analysis, so as to calculate different final lead times of corresponding components based on the appropriate lead time and safety inventory level of each item, and adjust the order quantity of the components to effectively manage the inventory level.

[0030] The effects that can be obtained from the present disclosure are not limited to the above effects. In addition, according to the following description, other effects not described herein will become apparent to those skilled in the art. Brief Description of the Drawings

[0031] Figure 1 is a block diagram showing a component ordering system according to an embodiment of the present disclosure.

[0032] Figure 2 is a diagram showing the concepts of the required lead time and the safety lead time according to an embodiment of the present disclosure.

[0033] Figure 3 is a more specific block diagram showing a component ordering system according to an embodiment of the present disclosure.

[0034] Figure 4 is a schematic diagram showing the uncertainty of each distribution interval of the components of the required lead time calculation unit and the multiple scenario generation modules.

[0035] Figure 5 and Figure 6 is a schematic diagram showing the safety lead time and the safety inventory calculation method of the safety lead time calculation unit.

[0036] Figure 7 is a flowchart showing the operations of a component ordering method according to an embodiment of the present disclosure.

[0037] Figure 8 is specifically shown Figure 7 Flowcharts of processes A-1 and A-2. Detailed Description of the Embodiments

[0038] Hereinafter, embodiments described in this specification will be described in detail with reference to the accompanying drawings. Throughout the drawings, the same or similar elements are denoted by the same reference numerals, and redundant descriptions thereof will be omitted.

[0039] In the following description, the suffixes “module” and “component” of elements are given only for ease of making the specification or can be used interchangeably, and do not have unique meanings or functions per se.

[0040] When describing the embodiments disclosed in this specification, if it is determined that the detailed description of the known technology related to the present disclosure makes the subject matter of the embodiments disclosed in this specification unclear, the detailed description will be omitted. In addition, the drawings are only for easily understanding the embodiments disclosed in this specification, and do not limit the technical concept disclosed in this specification. Furthermore, it should be understood that the present disclosure includes all modifications, equivalents, and substitutions included in the spirit and scope of the present disclosure. The terms “first,” “second,” etc. used in this specification may be used to describe various elements, but these elements should not be construed as being limited to these terms. These terms are only used to distinguish one element from other elements.

[0041] It will be understood that when an element is referred to as being “coupled” or “connected” to another element, it can be directly coupled or connected to the other element, or there may be intervening elements therebetween. In contrast, it will be understood that when an element is referred to as being “directly coupled” or “directly connected” to another element, there are no intervening elements.

[0042] As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well.

[0043] In this specification, it should be understood that terms such as “including,” “having,” etc. are intended to indicate the presence of the features, numbers, steps, actions, elements, components, or combinations thereof disclosed in this specification, and are not intended to preclude the possibility that one or more other features, numbers, steps, actions, elements, components, or combinations thereof may exist or may be added.

[0044] Before describing the present disclosure, a method for calculating an order quantity (required quantity) will be described first. The order quantity (required quantity) can be calculated as a value obtained by subtracting the sum of open POs, current inventory, and in-process quantity from the sum of the order quantity (required quantity) per period and safety stock. Here, the order quantity (required quantity) per period can refer to the order quantity of an orderer for a specific period, and the safety stock can refer to a quantity that is pre-planned and ensured to prevent an unbalanced quantity shortage caused by fluctuations in product demand (sales volume). In addition, an open PO can refer to a quantity that has not been delivered after the orderer's order, and the in-process quantity can refer to a quantity that is currently being produced after the orderer's order. The above-mentioned order quantity (required quantity) per period affects the lead time of components, which is the time (period) taken to produce goods.

[0045] In addition, the procurement of components is directly related to the issue of batch delivery of components from a partner company (component company). When a partner company is requested to supply components, the quantity of batch delivery and the cycle of batch delivery can vary depending on the component production capacity and order volume of the partner company. For example, when an order is executed, multiple requests can be made or different dates for batch delivery can be set according to the component production capacity of the partner company.

[0046] According to an embodiment of the present disclosure, a component ordering system based on a production plan calculates a component-specific lead time and safety stock to minimize distribution costs and inventory throughout the procurement process.

[0047] Figure 1 is a block diagram showing a component ordering system according to an embodiment of the present disclosure. Figure 2 is a diagram showing the concepts of necessary lead time and safety lead time according to an embodiment of the present disclosure.

[0048] Reference Figure 1 , the component ordering system can include a necessary lead time calculation unit 100, a safety lead time calculation unit 200, and an order confirmation unit 300. Figure 1 Mainly shows the configuration related to the embodiment. The actual implementation of the component ordering system can include fewer or more elements.

[0049] First, the necessary lead time calculation unit 100 can calculate the necessary lead time required for each component based on pre-stored order data. Reference Figure 2, Case 1 and Case 2 represent 63 days and 72 days from the component company to the factory, respectively. Each cycle includes the time taken for the components to be transported from the component company to the KD center, the time taken for the components to reach the local area from the KD center, and the time taken for the components to be transported from the local area to the factory. Here, the KD center refers to a distribution base that packages vehicle components purchased domestically and internationally and distributes the vehicle components overseas. The necessary lead time is the time period taken for the components to reach the local area from the component company and is the sum of the component production time and the component transportation time. The safety lead time (storage time), which will be described later, can refer to the time taken for the components to be transported from the local area to the factory.

[0050] More specifically, the necessary lead time calculation unit 100 calculates the necessary lead time based on the order data. The order data can refer to the order quantity of the component company, which is pre-stored data and can include data on the past number of partial deliveries of each component, data on the storage time for each partial delivery, and data on the required number of days. The above types of data are exemplary and do not have to be limited to this. The necessary lead time calculation unit 100 can calculate that: the more the past number of partial deliveries of each component, the later the storage time for each partial delivery, and the greater the required number of days, the longer the necessary lead time.

[0051] The necessary lead time calculation method of the necessary lead time calculation unit 100 will be described in detail.

[0052] Figure 4 is a schematic diagram showing the uncertainty of each distribution interval of the components of the necessary lead time calculation unit 100 and the multiple scenario generation modules.

[0053] First, the necessary lead time calculation unit 100 collects the above-mentioned order data including the past batch delivery times of each component, the storage time of each batch delivery, and the data on the number of days required. For example, the data collected can be data pre-stored in the company's database. The necessary lead time calculation unit 100 generates an order data distribution based on the collected order data. Due to the existence of uncertainties in component distribution, the necessary lead time calculation unit 100 generates an order data distribution and calculates the necessary lead time required for each component based on the generated order data distribution. For example, during the period when components are transported from the component company to the KD center, the uncertainty in component distribution is high, so components have probability distributions of different batch delivery times, the probability distribution of the number of days required for one delivery, and the probability distribution of the number of days required for two or more deliveries. On the contrary, for the period when components take to reach the local area from the KD center, the uncertainty in component distribution decreases, so all components can have the same distribution of the number of days required to reach the local area. In addition, after reaching the local area, the components are transported to the factory, and there is little uncertainty during the period when the components reach the factory after a specific amount of time. Here, in order to reduce the uncertainty in component distribution, there can be pre-arrival inventory in the form of safety stock.

[0054] Specifically, the necessary lead time calculation unit 100 is Figure 4 a scenario generation module and can generate multiple scenarios by stratified sampling from the generated order data distribution. Stratified sampling is to stratify a population into homogeneous subgroups and extract samples according to the size of the subgroups by using a simple random sampling method. Therefore, the necessary lead time calculation unit 100 extracts samples based on the order data distribution by generating random numbers of the distribution of batch delivery times and the distribution of the number of days required. For example, referring to Figure 4 , the necessary lead time calculation unit 100 can select a scenario that meets the customer order quantities of components A, B, and C from multiple scenarios generated based on the order data distribution according to the results of the optimization model, and can calculate the necessary lead time required for each component according to the selected scenario.

[0055] Here, the calculation logic of the optimization model results is as follows. Among multiple scenarios, the batch delivery times, the number of days required, and the quantity required by the factory for each component of the customer's order number are predetermined values, and the optimization model can find the optimal value by continuously changing the customer order quantity as a decision variable. In addition, once the quantity of components arriving at the factory on a specific date is determined, this quantity is compared with the quantity actually required by the factory to determine if there are any dissatisfaction.

[0056] The formula of the optimization model will be described later. First, the information required in advance to run the optimization model is as follows.

[0057] The initial inventory of component i in process j can be set to IWIP ij , the desired inventory level of component i in period t (= the amount required by the factory) can be set to Demand it , the total desired inventory level of component i can be set to Demand i , the maximum number of t values with the final desired inventory level of component i can be set to Demand_t i , the number of partial deliveries can be set to SPC for order number k, for component i, and for scenario s sik , the warehousing rate can be set to SPR for storage number n, for the number of partial deliveries m, and for component i imn , the date interval during the "factory → KD center" transportation can be set to DTA for order number k, for storage number n, for the number of partial deliveries m (= SPsi), for component i, and for scenario s simnk , the date interval during the "KD center → local area" transportation can be set to DTB for period t and for scenario s st , the order number k of the order date t can be set to OD t , the order date t for order number k can be set to OD k , the demand dissatisfaction rate standard can be set to Cutoff_R, and the standard for the number of demand dissatisfaction scenarios can be set to Cutoff_N.

[0058] To meet the optimization model, the following requirements must be satisfied. minimize∑ sijt wip sijt The formula for minimizing the inventory in the process needs to be satisfied, minimize∑ sjt slack sjt The formula for minimizing the number of production dissatisfaction cases needs to be satisfied, and minimize∑ sjt (T - t)·slack sjt The formula for satisfying the priority of the production dissatisfaction date needs to be satisfied. In addition, as a variable determined in the optimization model, x sij t represents the output of process j of component i in period t under scenario s, wips ijt represents the inventory of component i in process j in period t under scenario s, ip it represents the order quantity of component i in period t, slack it represents the number of demand dissatisfaction scenarios of component i in period t, and over si represents whether the demand dissatisfaction rate of component i under scenario s is equal to or greater than cutoff.

[0059] At the same time, the optimization model also has limitations.

[0060] Specifically, a demand satisfaction limit can be set (j = 2, t' = the cumulative value up to t, for example, t = 2, t' = 0, 1, 2), a WIP flow limit can be set (t = 0, j = 0), a WIP flow limit can be set (t = 0, j > 0), a WIP flow limit can be set (t > 0, j = 0), a WIP flow limit can be set for the KD center (t > 0, j = 1), a WIP flow limit can be set for arriving in this area (t > 0, j = 2, t': the start date of j = 1), an initial inventory limit can be set (j = 0, 1), a definition can be set for whether the demand dissatisfaction rate is exceeded, and a limit can be set for the number of demand dissatisfaction scenarios.

[0061] Next, the safety lead time calculation unit 200 can calculate the safety lead time based on the component data. The safety lead time is a quantifiable period during which the inventory level satisfies production for N days. The component data includes the necessary lead time calculated by the necessary lead time calculation unit 100, the component production capacity of the component company, and the number of days required for component transportation, but these are exemplary and not necessarily limited to this.

[0062] Figure 5 and Figure 6 is a schematic diagram showing the safety lead time and the safety inventory calculation method of the safety lead time calculation unit 200.

[0063] Refer to Figure 5 and Figure 6 , the safety lead time calculation unit 200 first calculates the order quantity based on the component data, and if the calculated order quantity and the number of days required for component transportation are determined, the inventory level by date can be calculated. Specifically, the safety lead time calculation unit 200 can map the calculated inventory level by date to the daily production capacity information of the component company to calculate how many days of production work are stored in the current inventory. Therefore, the safety lead time can be calculated based on the calculated inventory level and the daily production capacity of the component company. In Figure 5In Case 1, when the inventory level calculated as the appropriate inventory storage quantity is 450 and the daily production capacity (output) is 100, 200, and 150 respectively, the safety lead time is 3 days. Additionally, in Case 2, when the inventory level calculated as the appropriate inventory quantity is 300 and the daily production capacity (output) is 100 and 200 respectively, the safety lead time is 2 days. In this article, component-specific safety lead time values are used to plot the distribution, and based on this distribution, the average or the 90th percentile can be defined as the component-specific safety lead time. Additionally, as Figure 6 shown, when the order quantity is large compared to the demand, the inventory level calculated as the appropriate inventory storage quantity is 1000, and depending on the daily production capacity, the safety lead time can be increased to 10 days. Conversely, when the order quantity is small compared to the demand, the calculated inventory level is 300 and depending on the daily production capacity, the safety lead time can be reduced to 2 days.

[0064] Figure 3 shows a more detailed representation of the component ordering system including the above-mentioned necessary lead time calculation unit 100 and safety lead time calculation unit 200, as well as the order confirmation unit 300 to be described later. Figure 1 of the component ordering system.

[0065] Figure 3 is a block diagram more specifically showing the component ordering system according to an embodiment of the present disclosure.

[0066] Referring to Figure 3 , the first part 400 may include a production plan receiving module 410, an inventory information receiving module 420, an undelivered inventory information receiving module 430, a master information receiving module 440, and a material requirement calculation module 450. The second part 500 may include a master information input confirmation module 510 and a procurement data management module 520. The third part 600 may include a lead time calculation module 610, a safety inventory calculation module 620, and a data reception and algorithm management module 630. The above-mentioned necessary lead time calculation unit 100 and safety lead time calculation unit 200 may be included in the lead time calculation module 610, and the order confirmation unit 300 may be included in the first module. According to an embodiment of the present disclosure, the procurement data management module 520 may send data to the data reception and algorithm management module 630, and the master information receiving module 440 may send master information including necessary lead time, safety lead time, and safety inventory information to the master information receiving module 440. The production plan receiving module 410, the inventory information receiving module 420, and the undelivered inventory information receiving module 430 may send production plan, inventory information, and undelivered inventory information to the material requirement calculation module 450, and the master information receiving module 440 may send master information to the material requirement calculation module 450.

[0067] Finally, the order confirmation unit 300 can calculate the final lead time based on the required lead time calculated by the required lead time calculation unit 100 and the safety lead time calculated by the safety lead time calculation unit 200, and can confirm the order quantity. The order confirmation unit 300 can receive a pre-established production plan and can calculate the final lead time by adding the required lead time and the safety lead time. Finally, the order confirmation unit 300 can use the final lead time calculated for each component to confirm the final order quantity based on the production plan for the corresponding period.

[0068] Based on the above component ordering system, reference will be made to Figure 7 and Figure 8 to describe a component ordering method according to an embodiment of the present disclosure.

[0069] Figure 7 is a flowchart S700 showing the operations of a component ordering method according to an embodiment of the present disclosure.

[0070] First, Region A is the lead time calculation unit, and steps S701 to S706 show an intelligent order quantity management flowchart. In addition, Region B is the ordering unit and can be processed through enterprise resource planning (ERP). The above order confirmation unit 300 can include enterprise resource planning.

[0071] First, in step S701, the lead time calculation module 610 performs an analysis of pre-stored order data. In step S702, the lead time calculation module 610 can analyze the data for the last three months as past order data, and can determine in step S703 whether the lead time of the existing input interval matches the lead time of the calculation interval. When in step S703 the lead time of the existing input interval does not match the lead time of the calculation interval (Yes), the person in charge can determine to change the lead time in step S704, and the person in charge can confirm the changed lead time in step S705. When calculating the final lead time, the changed lead time can be applied. On the contrary, when in step S703 the lead time of the existing input interval matches the lead time of the calculation interval (No), the lead time calculation module 610 can calculate the confirmed final lead time in step S706. Enterprise resource planning can receive a pre-established production plan and the final lead time in step S707, and can calculate the order quantity based on the final lead time and the received production plan in step S708. After that, in step S709, enterprise resource planning can confirm the calculated order quantity as the order quantity.

[0072] Figure 8 Specifically shows Figure 7 is a flowchart S800 of processes A-1 and A-2.

[0073] ReferenceFigure 8 , first, in step S801, the necessary lead time calculation unit 100 can collect pre-stored past order data. After that, the necessary lead time calculation unit 100 can collect pre-stored order data in step S802 to generate an order data distribution, and can generate multiple scenarios from the order data distribution by stratified sampling in step S803. After that, based on the multiple scenarios generated, the necessary lead time required for each component can be calculated in step S804. In step S805, the safety lead time calculation unit 200 can calculate the order quantity based on the component data. In addition, in step S806, the safety lead time calculation unit 200 can calculate the inventory level according to the calculated order quantity, calculate the order plan, and can set the coverage days in step S807 to meet the demand of each component. The safety lead time calculation unit 200 can set the coverage days according to the production plan and the calculated inventory level based on how much demand is covered. After that, in step S808, the safety lead time calculation unit 200 can calculate the safety lead time by dividing the calculated inventory level by the daily production capacity of the component company. After that, in step S809, the order confirmation unit 300 can calculate the final lead time by adding the necessary lead time and the safety lead time.

[0074] According to the embodiments of the present disclosure described above, the lead time is calculated through statistical techniques and optimization analysis, so as to calculate different final lead times of corresponding components based on the appropriate lead time and safety inventory level of each item, and adjust the order quantity of the components to effectively manage the inventory level.

[0075] Although specific embodiments of the present disclosure have been described for illustrative purposes, those skilled in the art will recognize that various modifications, additions, and substitutions are possible without departing from the technical concept of the present disclosure disclosed in the appended claims.

[0076] [Description of reference numerals in the drawings]

[0077] 100: Necessary lead time calculation unit 200: Safety lead time calculation unit

[0078] 300: Order confirmation unit 400: First part

[0079] 410: Production plan receiving module 420: Inventory information receiving module

[0080] 430: Un-delivered inventory information receiving module 440: Master information receiving module

[0081] 450: Quantity of materials required calculation module 500: Second part

[0082] 510: Master information input confirmation module; 520: Procurement data management module

[0083] 600: The third part 610: Lead time calculation module

[0084] 620: Safety stock calculation module

[0085] 630: Data reception and algorithm management module.

Claims

1. A component ordering system, comprising: a necessary lead time calculation unit configured to calculate the necessary lead time required for each component based on pre-stored ordering data; a safety lead time calculation unit configured to calculate a safety lead time to meet the customer order quantity based on component data including the necessary lead time calculated by the necessary lead time calculation unit, the component production capacity of the component company, and the number of days required for component transportation; and an order confirmation unit configured to calculate a final lead time based on the necessary lead time calculated by the necessary lead time calculation unit and the safety lead time calculated by the safety lead time calculation unit, and confirm the order quantity.

2. The component ordering system according to claim 1, wherein the ordering data includes at least one piece of data selected from the group consisting of data on the past number of partial deliveries for each component, data on the storage time for each partial delivery, and data on the number of days required.

3. The component ordering system according to claim 1, wherein the necessary lead time calculation unit is configured to: collect the pre-stored ordering data to generate an ordering data distribution, and calculate the necessary lead time required for each component based on the generated ordering data distribution.

4. The component ordering system according to claim 3, wherein the necessary lead time calculation unit is configured to: generate a plurality of scenarios by stratified sampling from the generated ordering data distribution, and calculate the necessary lead time required for each component based on the generated plurality of scenarios.

5. The component ordering system according to claim 4, wherein the necessary lead time calculation unit is configured to: calculate the necessary lead time required for each component according to the scenarios that meet the customer order quantity among the generated plurality of scenarios.

6. The component ordering system according to claim 1, wherein the safety lead time calculation unit is configured to: calculate the order quantity based on the component data, and calculate the inventory quantity through the calculated order quantity.

7. The component ordering system according to claim 6, wherein the safety lead time calculation unit is configured to: calculate the safety lead time according to the calculated inventory quantity and the daily production capacity of the component company.

8. The component ordering system according to claim 1, wherein the order confirmation unit is configured to: calculate the final lead time by adding the necessary lead time and the safety lead time.

9. The component ordering system according to claim 1, wherein the order confirmation unit is configured to: receive a pre-established production plan, and confirm the order quantity based on the calculated final lead time and the received production plan.

10. A component ordering method, comprising: calculating, by a necessary lead time calculation unit, the necessary lead time required for each component based on pre-stored ordering data; The safety lead time calculation unit calculates the safety lead time to meet the customer order quantity based on component data including the required lead time, the component production capacity of the component company, and the number of days required for component transportation; The order confirmation unit calculates the final lead time based on the required lead time calculated by the required lead time calculation unit and the safety lead time calculated by the safety lead time calculation unit; And The order confirmation unit confirms the order quantity based on the calculated final lead time.

11. The component ordering method according to claim 10, wherein, when calculating the required lead time, pre-stored order data is collected to generate an order data distribution, and the required lead time for each component is calculated based on the generated order data distribution.

12. The component ordering method according to claim 11, wherein, when calculating the required lead time, a plurality of scenarios are generated by stratified sampling from the generated order data distribution, and the required lead time for each component is calculated based on the generated plurality of scenarios.

13. The component ordering method according to claim 12, wherein, when calculating the required lead time, the required lead time for each component is calculated according to the scenarios that meet the customer order quantity among the generated plurality of scenarios.

14. The component ordering method according to claim 10, wherein, when calculating the safety lead time, the order quantity is calculated based on the component data, and the inventory quantity is calculated by the calculated order quantity.

15. The component ordering method according to claim 10, wherein, when calculating the final lead time, the final lead time is calculated by adding the required lead time and the safety lead time.

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