Drill bit logistics system and drill bit inventory management method

Abstract

The application relates to a drill bit logistics system and a drill bit inventory management method. The drill bit logistics system comprises a drill bit management system, the drill bit management system comprises a stereoscopic warehouse, a needle matching machine, a needle returning machine and a box sorting machine, the stereoscopic warehouse, the needle matching machine, the needle returning machine and the box sorting machine are connected through a material taking and placing mechanism and a logistics line, and the drill bit management system is further provided with a docking interface with external equipment. The material taking and placing mechanism and the logistics line are configured to realize the connection of various types of equipment in the drill bit management system, thereby decoupling the equipment of the drill bit management system, flexibly adjusting the placement position of the equipment of the drill bit logistics system, and increasing or reducing the equipment as required, so that efficient automatic transmission of material boxes between heterogeneous equipment is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computers, in particular to a drill bit logistics system and a drill bit inventory management method. BACKGROUND

[0002] With the development of electronic technology, the demand for printed circuit boards (PCB) is also increasing. When the PCB is mechanically drilled, different diameters and specifications of drill bits are usually required. The general operation process is to first take out the magazine loaded with different specifications of drill bits from the warehouse, then pick different diameters and specifications of drill bits into the same magazine (this process is called needle matching), and then send the matched needle (here, "needle" refers to drill bit) to the drilling machine for use. The magazine refers to a labeled carrier loaded with drill bits. Drill bits are consumables, and after use in the drilling machine, different diameters and specifications of used drill bits need to be sorted into the same diameter and specification of drill bits and placed in the corresponding magazine (this process is called needle returning), and the returned needle is sent to the warehouse or the grinding machine. The main function of the grinding machine is to regrind and repair used drill bits to improve the service life of the drill bits. Used drill bits need to be sent from the warehouse to the grinding machine for grinding, and the ground drill bits are stored back to the warehouse.

[0003] At present, automatic needle matching machines, needle returning machines, and stereoscopic warehouses can exist independently and run alone, and are not linked with other devices, which makes it necessary for workers to complete the above-mentioned needle matching-use-needle returning material transfer work, and the manual operation is intensive, and the production safety is difficult to guarantee; or some devices are connected, but due to the lack of a complete inventory management strategy or the lack of an inventory management strategy with flexible adjustment capability, the device operation efficiency is not high. Therefore, for the logistics management of drill bits in the production workshop, a drill bit management system is generally implemented in one time, but this system has high requirements for drill room space and height, which limits the placement position of the device and makes it difficult to cope with complex drill room environment, and may also cause large inventory waste. Therefore, it is crucial to decouple the devices of the drill bit management system in the physical sense, realize distributed implementation on demand through modular design, and adapt to the site conditions, but this will lead to complex coupling relationship between the devices of the drill bit management system in the logical sense, and therefore the complexity of the inventory management strategy increases exponentially, and the logistics processing efficiency of the inventory management process cannot be guaranteed. SUMMARY

[0004] Therefore, it is necessary to provide a drill bit logistics system and a drill bit inventory management method, device, computer equipment, computer readable storage medium, and computer program product, which can decouple the devices of the drill bit management system, improve the drill bit transportation efficiency, and solve the above technical problems.

[0005] In a first aspect, the present application provides a drill bit logistics system, which comprises a drill bit management system, the drill bit management system comprising a stereoscopic warehouse, a needle distribution machine, a needle returning machine and a box sorting machine, the stereoscopic warehouse being configured to store a magazine loaded with drill bits, the magazine being a box configured to load the drill bits, the needle distribution machine being configured to distribute drill bits of multiple specifications and small quantities into the same magazine, the needle returning machine being configured to take out different types of drill bits in the magazine and load them back into corresponding magazines, and the box sorting machine being configured to sort the magazines into magazine boxes, the magazine box being configured to load the magazines, the stereoscopic warehouse, the needle distribution machine, the needle returning machine and the box sorting machine being connected through material taking and placing mechanisms and logistics lines, the material taking and placing mechanisms being arranged at corresponding positions of the stereoscopic warehouse and being configured to take the magazines from the stereoscopic warehouse and place them on the logistics lines to deliver the magazines to at least one of the needle distribution machine, the needle returning machine and the box sorting machine, the material taking and placing mechanisms also being configured to take the magazines from the logistics lines and store the magazines taken from the logistics lines in the stereoscopic warehouse, and the drill bit management system being further provided with an interface for connecting with external devices, and the drill bit management system being connected with the external devices through magazine carrying devices at the interface.

[0006] In one of the embodiments, the drill bit logistics system further comprises a drilling machine and a grinding machine, and the drilling machine, the grinding machine and the drill bit management system are connected through magazine carrying devices, and the magazine carrying devices are configured to carry the magazine boxes.

[0007] In one of the embodiments, the drill bit management system further comprises a box sorting machine and a box reversing machine, the box sorting machine being configured to take out drill bits of few specifications and large quantities from different magazines, and the box reversing machine being configured to change the orientations of the drill bits loaded in the magazines, and the stereoscopic warehouse, the needle distribution machine, the needle returning machine, the box sorting machine, the box reversing machine and the box sorting machine are connected through material taking and placing mechanisms and logistics lines, the box sorting machine comprising a needle returning box sorting machine and a needle distribution box sorting machine, the box sorting machine comprising a needle returning box sorting machine and a needle distribution box sorting machine, and the box reversing machine comprising an incoming box reversing machine, a pre-grinding box reversing machine and a post-grinding box reversing machine.

[0008] In one of the embodiments, the drill bit management system further comprises a buffer warehouse, the buffer warehouse being configured to temporarily store the magazines, and the buffer warehouse being independently arranged in the drill bit management system, or the buffer warehouse being arranged as a buffer component in the needle distribution machine and the needle returning machine, and in the case that the buffer warehouse is independently arranged in the drill bit management system, the stereoscopic warehouse, the needle distribution machine, the needle returning machine, the buffer warehouse and the box sorting machine are connected through material taking and placing mechanisms and logistics lines.

[0009] The drill bit management system is connected with the drill rig, the grinding machine and the drill bit management system through the material box conveying device, and the material box conveying device is used for conveying the material box. The connection of various devices in the drill bit management system including the stereoscopic warehouse, the needle matching machine, the needle returning machine, the buffer warehouse and the box sorting machine is realized through the configuration of the material taking and placing mechanism and the logistics line, so that the devices of the drill bit management system are decoupled. At the same time, the connection of the drill rig, the grinding machine and the drill bit management system is realized through the material box conveying device, so that the placement position of the devices of the drill bit logistics system can be flexibly adjusted, and the devices can be added or reduced as needed, which is beneficial to realize the efficient automatic transmission of materials between heterogeneous devices.

[0010] In a second aspect, the present application provides a drill bit inventory management method, applied to the drill bit logistics system, comprising:

[0011] The logistics connection relationship of different devices in the drill bit logistics system is modeled by a directed graph to obtain a logistics connection model;

[0012] Obtain the logistics demand information of the demand end device in the drill bit logistics system;

[0013] Determine the inventory consumption information of the stereoscopic warehouse in the drill bit management system based on the logistics demand information, and generate the inventory adjustment strategy corresponding to the inventory consumption information;

[0014] Based on the logistics connection model, the logistics processing task corresponding to the inventory adjustment strategy is created.

[0015] In one embodiment, the modeling of the logistics connection relationship of different devices in the drill bit logistics system by a directed graph to obtain a logistics connection model comprises:

[0016] Identify the device pairs in the drill bit logistics system that have a logistics connection relationship;

[0017] Construct the connection relationship triplets of the device pairs, the connection relationship triplets comprising the end device, the start device and the transfer loss;

[0018] Based on the connection relationship triplets, a directed graph of the drill bit logistics system is generated;

[0019] Based on the directed graph and a preset logistics target, a logistics connection model of the drill bit logistics system is constructed, and the preset logistics target corresponds to the transfer loss.

[0020] In one embodiment, the obtaining of the logistics demand information of the demand end device in the drill bit logistics system comprises:

[0021] Obtain historical demand information and current demand information of various specifications of drill bits within the observation window range;

[0022] Input the historical demand information into a demand prediction model to obtain corresponding predicted demand information of various specifications of drill bits, wherein the demand prediction model is trained based on demand data of various specifications of drill bits in historical data;

[0023] Summarize the predicted demand information, the historical demand information and the current demand information to obtain logistics demand information.

[0024] In one of the embodiments, the determination of the inventory consumption information of the stereoscopic warehouse in the drill bit management system based on the logistics demand information and the generation of the inventory adjustment strategy corresponding to the inventory consumption information include:

[0025] For each stereoscopic warehouse, determine the inventory consumption speed of various specifications of drill bits in the stereoscopic warehouse based on the logistics demand information;

[0026] According to the inventory information and the inventory consumption speed of various specifications of drill bits in the stereoscopic warehouse, model the inventory consumption process of various specifications of drill bits for each stereoscopic warehouse to obtain inventory consumption information;

[0027] Based on the inventory consumption information, generate the inventory adjustment strategy of various specifications of drill bits in the stereoscopic warehouse.

[0028] In one of the embodiments, before the modeling of the inventory consumption process of various specifications of drill bits for each stereoscopic warehouse according to the inventory information and the inventory consumption speed of various specifications of drill bits in the stereoscopic warehouse to obtain the inventory consumption information, it further includes:

[0029] Determine the current inventory information of various specifications of drill bits in each stereoscopic warehouse, as well as the historical demand information and the current demand information of various specifications of drill bits at the demand end;

[0030] Based on the current inventory information, the historical demand information and the current demand information, determine the safety stock and the upper limit of the inventory of various specifications of drill bits in the stereoscopic warehouse through Bayesian estimation;

[0031] Based on the safety stock and the upper limit of the inventory, update the inventory information of various specifications of drill bits in the stereoscopic warehouse.

[0032] In one of the embodiments, the determination of the safety stock and the upper limit of the inventory of various specifications of drill bits in the stereoscopic warehouse through Bayesian estimation based on the current inventory information, the historical demand information and the current demand information includes:

[0033] Based on the current inventory information, the historical demand information and the current demand information, generate Bayesian prior distribution parameters;

[0034] generate Bayesian posterior distribution parameters based on the newly observed demand information and the Bayesian prior distribution parameters;

[0035] obtain a service level coefficient, a replenishment lead time, and a demand prediction coverage period corresponding to the stereoscopic warehouse;

[0036] determine a safety stock of each type and specification of drill bit based on the service level coefficient, the replenishment lead time, and the Bayesian posterior distribution parameters;

[0037] determine an upper limit of the inventory of each type and specification of drill bit based on the replenishment lead time, the demand prediction coverage period, the Bayesian posterior distribution parameters, and the safety stock.

[0038] In one of the embodiments, the inventory adjustment strategy includes a stereoscopic warehouse replenishment strategy;

[0039] The generating, based on the inventory consumption information, of the inventory adjustment strategy for each type and specification of drill bit in the stereoscopic warehouse includes:

[0040] determining, based on the inventory consumption information, current inventory information of each type and specification of drill bit in the stereoscopic warehouse, obtaining the upper limit of the inventory, the safety stock, and the replenishment speed of the stereoscopic warehouse, and current demand information and predicted demand information of each type and specification of drill bit at the demand end;

[0041] obtaining a demand urgency, a demand consumption speed, and a demand prediction accuracy of each type and specification of drill bit at the demand end;

[0042] determining a replenishment priority of each type and specification of drill bit based on the current inventory information, the upper limit of the inventory, the safety stock, the current demand information, the predicted demand information, the demand urgency, the demand consumption speed, and the demand prediction accuracy, and determining a replenishment quantity of each type and specification of drill bit based on the current inventory information, the upper limit of the inventory, the safety stock, the replenishment speed, the current demand information, the predicted demand information, the demand consumption speed, and the demand prediction accuracy;

[0043] generating a stereoscopic warehouse replenishment strategy for each type and specification of drill bit in the stereoscopic warehouse based on the replenishment priority and the replenishment quantity.

[0044] In one of the embodiments, the inventory adjustment strategy includes a stereoscopic warehouse return strategy;

[0045] The generating, based on the inventory consumption information, of the inventory adjustment strategy for each type and specification of drill bit in the stereoscopic warehouse includes:

[0046] determining, based on the inventory consumption information, current inventory information of each type and specification of drill bit in the stereoscopic warehouse, and historical demand information, current demand information, and predicted demand information of each type and specification of drill bit at the demand end;

[0047] Obtaining the demand prediction accuracy of the demand end for the drill bits of various specifications;

[0048] Determining the withdrawal priority and withdrawal quantity of the drill bits of various specifications based on the current inventory information, the historical demand information, the current demand information, the predicted demand information, and the demand prediction accuracy;

[0049] Generating a three-dimensional warehouse withdrawal strategy for the drill bits of various specifications in the three-dimensional warehouse based on the withdrawal priority and the withdrawal quantity.

[0050] In a third aspect, the present application further provides a drill bit inventory management device arranged in the drill bit logistics system, comprising:

[0051] A communication relationship modeling module is configured to model the logistics communication relationship of different devices in the drill bit logistics system by a directed graph to obtain a logistics communication model;

[0052] A demand acquisition module is configured to acquire logistics demand information of demand end devices in the drill bit logistics system;

[0053] An inventory strategy generation module is configured to determine inventory consumption information of a three-dimensional warehouse in the drill bit management system based on the logistics demand information, and generate an inventory adjustment strategy corresponding to the inventory consumption information;

[0054] A logistics processing module is configured to create a logistics processing task corresponding to the inventory adjustment strategy based on the logistics communication model.

[0055] In a fourth aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0056] Modeling the logistics communication relationship of different devices in the drill bit logistics system by a directed graph to obtain a logistics communication model;

[0057] Acquiring logistics demand information of demand end devices in the drill bit logistics system;

[0058] Determining inventory consumption information of a three-dimensional warehouse in the drill bit management system based on the logistics demand information, and generating an inventory adjustment strategy corresponding to the inventory consumption information;

[0059] Creating a logistics processing task corresponding to the inventory adjustment strategy based on the logistics communication model.

[0060] In a fifth aspect, the present application further provides a computer readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the following steps:

[0061] modeling a logistics connection relationship of different devices in the drill bit logistics system to obtain a logistics connection model;

[0062] obtaining logistics demand information of a demand-side device in the drill bit logistics system;

[0063] determining inventory consumption information of a stereoscopic warehouse in the drill bit management system based on the logistics demand information, and generating an inventory adjustment strategy corresponding to the inventory consumption information;

[0064] creating a logistics processing task corresponding to the inventory adjustment strategy based on the logistics connection model.

[0065] In a sixth aspect, the present application further provides a computer program product comprising a computer program which, when executed by a processor, implements the following steps:

[0066] modeling a logistics connection relationship of different devices in the drill bit logistics system to obtain a logistics connection model;

[0067] obtaining logistics demand information of a demand-side device in the drill bit logistics system;

[0068] determining inventory consumption information of a stereoscopic warehouse in the drill bit management system based on the logistics demand information, and generating an inventory adjustment strategy corresponding to the inventory consumption information;

[0069] creating a logistics processing task corresponding to the inventory adjustment strategy based on the logistics connection model.

[0070] The above drill bit inventory management method, device, computer equipment, computer readable storage medium and computer program product based on logistics management model a logistics connection relationship of different devices in the drill bit logistics system to obtain a logistics connection model; obtain the logistics demand information of the demand-side device in the drill bit logistics system; determine the inventory consumption information of the stereoscopic warehouse in the drill bit management system based on the logistics demand information, and generate the inventory adjustment strategy corresponding to the inventory consumption information; create a logistics processing task corresponding to the inventory adjustment strategy based on the logistics connection model. The present application realizes the logistics connection modeling of the drill bit logistics system through the logistics connection relationship between devices, and when the logistics demand is generated at the demand side, the inventory adjustment strategy of the system can be generated through the logistics demand information, and the logistics processing task can be created in combination with the logistics connection model, which is also conducive to realizing the efficient automatic transmission of the magazine between heterogeneous devices, thereby effectively realizing the management of the drill bit inventory. BRIEF DESCRIPTION OF DRAWINGS

[0071] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the related art. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other related drawings can also be obtained on the basis of these drawings without creative effort.

[0072] Figure 1 A structural block diagram of a drill bit logistics system in an embodiment;

[0073] Figure 2 A layout schematic diagram of a plurality of drill bit management system devices in an embodiment;

[0074] Figure 3 A schematic diagram of a drill bit management system device layout and its automatic logistics in an embodiment;

[0075] Figure 4 An application environment diagram of a drill bit inventory management method in an embodiment;

[0076] Figure 5 A flowchart of a drill bit inventory management method in an embodiment;

[0077] Figure 6 A directed graph logistics connection model schematic diagram of a drill bit logistics system in an embodiment;

[0078] Figure 7 A schematic diagram of inventory consumption information of an inventory consumption process in an embodiment;

[0079] Figure 8 A structural block diagram of a drill bit inventory management device in an embodiment;

[0080] Figure 9 An internal structure diagram of a computer device in an embodiment. DETAILED DESCRIPTION

[0081] In order to make the purposes, technical solutions and advantages of the present application clearer, the following will further describe the present application with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0082] The drill bit logistics system provided by the embodiments of the present application can specifically refer to Figure 1As shown, the drill bit logistics system includes a drill bit management system 102, which includes a stereoscopic warehouse 1021 for storing boxes loaded with drill bits, a needle distribution machine 1022 for distributing multiple specifications and small batches of drill bits to the same box, a needle return machine 1023 for taking out different types of drill bits in the box and loading them back into the corresponding box, and a box sorting machine 1024 for sorting the boxes into a box. The box is used to load the box. The stereoscopic warehouse 1021, the needle distribution machine 1022, the needle return machine 1023 and the box sorting machine 1024 are connected through a material taking and placing mechanism and a logistics line. The material taking and placing mechanism 1025 is arranged at the corresponding position of the stereoscopic warehouse, which is used to take the box from the stereoscopic warehouse 1021 and place it on the logistics line to transport the box to at least one of the needle distribution machine 1022, the needle return machine 1023 and the box sorting machine 1024. The material taking and placing mechanism 1025 is also used to take the box from the logistics line and store the box taken from the logistics line in the stereoscopic warehouse 1021. The drill bit management system 102 is also provided with an interface 1026 for connecting with external equipment. The drill bit management system 102 communicates with the external equipment through the box handling equipment at the interface 1026.

[0083] The drill bit management system 102 includes a stereoscopic warehouse 1021, a needle distribution machine 1022, a needle return machine 1023 and a box sorting machine 1024. The stereoscopic warehouse is used to store boxes loaded with drill bits, the box is used to load the drill bits, the needle distribution machine is used to distribute multiple specifications and small batches of drill bits to the same box, the needle return machine is used to take out different types of drill bits in the box and load them back into the corresponding box, and the box sorting machine is used to sort the boxes into a box. The box is used to load the box. In one embodiment, the drill bit management system further includes a box sorting machine and a box reversing machine. The box sorting machine is used to take out drill bits of few specifications and large batches from different boxes, and the box reversing machine is used to change the orientation of the drill bits loaded in the box. The stereoscopic warehouse, the needle distribution machine, the needle return machine, the box sorting machine, the box sorting machine and the box reversing machine are connected through a material taking and placing mechanism and a logistics line. The box sorting machine includes a needle return box sorting machine and a needle distribution box sorting machine. The box sorting machine includes a needle return box sorting machine and a needle distribution box sorting machine. The box reversing machine includes a warehouse-in box reversing machine, a pre-grinding box reversing machine and a post-grinding box reversing machine.

[0084] In one embodiment, the drill bit logistics system further includes a drill and a grinder. The drill, the grinder and the drill bit management system 102 are connected through a box handling equipment, and the box handling equipment is used to handle the box. The drill is a device that uses drill bits in actual production, and the main function of the grinder is to regrind and repair used drill bits to improve the service life of the drill bits. The used drill bits need to be sent from the warehouse to the grinder for grinding, and the ground drill bits are stored back to the warehouse.

[0085] In one of the embodiments, the drill bit management system further comprises a buffer bank for temporarily storing the magazine, the buffer bank is independently arranged in the drill bit management system, or the buffer bank is arranged as a buffer component in the needle matching machine and the needle returning machine. In the case of the buffer bank being independently arranged in the drill bit management system, the stereoscopic warehouse, the needle matching machine, the needle returning machine, the buffer bank and the box sorting machine are connected through the material taking and placing mechanism and the logistics line.

[0086] Exemplarily, the present application specifically relates to a logistics system for managing the flow of drill bits among different devices, and the logistics here mainly refers to the connection among the drill bit, the grinding machine for repairing the drill bit and the drill bit management system. When a user needs to realize the logistics management of the drill bit in the actual production scene, the user can first configure various devices participating in the drill bit logistics process in a modeling manner according to the actual workshop setting or the workshop environment and production needs of the production workshop, specifically including the drill bit, the grinding machine and the drill bit management system, and the devices in the drill bit management system need to be modeled.

[0087] Then, the connection relationship among the devices in the system needs to be configured, the connection relationship among the devices in the drill bit management system 102 is configured through the material taking and placing mechanism 1026 and the logistics line, and the connection relationship among the drill bit, the grinding machine and the drill bit management system 102 is configured through the magazine carrying device, so as to build the drill bit logistics system.

[0088] Among them, the material taking and placing mechanism 1026 is used for storing and taking the magazine from the stereoscopic warehouse of the drill bit management system. In a specific embodiment, the material taking and placing mechanism can be realized by a stacker. The logistics line is used for transferring the magazine among devices and inside a device. The magazine carrying device is used for transferring the magazine among the drill bit, the grinding machine and the drill bit management system. The magazine carrying device can be realized by an AGV (Automatic Guided Vehicle), which is used for loading goods in an automatic or manual manner, automatically traveling according to a set route, automatically towing a loading trolley to a specified location, and loading and unloading goods in an automatic or manual manner. Here, the function of the magazine carrying device is to realize the automatic logistics connection among the drill bit management system, the drill bit and the grinding machine.

[0089] Exemplarily, after the various devices involved in the drill bit logistics management process are configured, the specific logistics connection relationship among the devices needs to be configured, so as to complete the transfer of the magazine and other processes based on the logistics connection relationship in the drill bit logistics system. The logistics connection relationship specifically includes the connection relationship among the devices in the drill bit management system 102, including the stereoscopic warehouse, the needle matching machine, the needle returning machine, the buffer bank and the box sorting machine, and the connection relationship among the drill bit, the grinding machine and the drill bit management system 102. For the former, it can be realized through the material taking and placing mechanism 1026 and the logistics line. In one embodiment, the layout diagram of multiple sets of drill bit management systems can be referred toFigure 2 As shown, it comprises a stereoscopic warehouse, a needle matching machine, a needle returning machine, a buffer warehouse, a warehouse-in box dumping machine, a pre-grinding box dumping machine, a post-grinding box dumping machine, a box sorting machine, and a case sorting machine, etc. The stacker is used as a material taking and placing mechanism and a logistics line to realize the physical connection of the devices in the management system. In addition, the AGV connection point is arranged at the sorting machine, which can be connected with the drilling machine and the grinding machine. In another embodiment, as shown in the case, Figure 3 The logistics connection process in the drill bit management system is illustrated, Figure 3 The material taking and placing mechanism 2-4 in the logistics line 2-4 takes out the box loaded with drill bits from the stereoscopic warehouse 2 and places it on the logistics line connecting the stereoscopic warehouse 2 and the stereoscopic warehouse 1. The box is transmitted to the stereoscopic warehouse 1 side through the logistics line, and is taken out from the logistics line by the material taking and placing mechanism 1-3 and stored in the stereoscopic warehouse 1. When the needle matching machine needs to match the drill bit, the material taking and placing mechanism 1-4 can take out the corresponding drill bit (box) from the stereoscopic warehouse 1 and deliver it to the needle matching machine through the logistics line on the needle matching machine side. When the drill bits in the needle returning machine need to be stored in the stereoscopic warehouse 1 or the stereoscopic warehouse 2, the movement direction is opposite to the above process. The remaining logistics delivery logic can refer to the above process, and there is no essential difference. In addition, it should be clear that, Figure 2 and Figure 3 The drill bit management system device layout as shown in and is only an example, and actually, through the method of the present application, the placement and inventory management of the drill bit management system devices can be realized.

[0090] In the above drill bit logistics system, the stereoscopic warehouse, the needle matching machine, the needle returning machine, and the box sorting machine of the drill bit management system are connected through the material taking and placing mechanism and the logistics line, the drilling machine, the grinding machine, and the drill bit management system are connected through the box carrying device, and the box carrying device is used for carrying the box. The connection of various devices in the drill bit management system including the stereoscopic warehouse, the needle matching machine, the needle returning machine, the buffer warehouse, and the box sorting machine is realized by configuring the material taking and placing mechanism and the logistics line, thereby decoupling the devices of the drill bit management system. At the same time, the connection of the drilling machine, the grinding machine, and the drill bit management system is realized through the box carrying device, so that the placement position of the devices of the drill bit logistics system can be flexibly adjusted, and the devices can be added or reduced as needed, which is beneficial to realize the efficient automatic transmission of materials between heterogeneous devices.

[0091] The drill bit inventory management method provided by the embodiments of the present application can be applied to the drill bit logistics system as shown in Figure 4The application environment is shown. Among them, the method is specifically applied to the drill bit logistics system described above, the terminal 401 in the system communicates with the drill bit management system 403, the drilling machine 405 and the grinding machine 407 respectively through the network, the drill bit management system 403 includes a three-dimensional warehouse 4031, a needle matching machine 4032, a needle returning machine 4033, a buffer warehouse 4034, a sorting machine 4035, a box reversing machine 4036 and other equipment, and these equipment are connected through material taking and placing mechanisms and logistics lines. And the drill bit management system 403, the drilling machine and the grinding machine are connected through the box carrying equipment. When the user of the terminal 401 needs to realize the logistics management of the drill bit logistics system, the logistics connection relationship of different equipment in the drill bit logistics system is modeled by a directed graph to obtain a logistics connection model; the logistics demand information of the demand end equipment in the drill bit logistics system is obtained; the inventory consumption information of the three-dimensional warehouse in the drill bit management system is determined based on the logistics demand information, and the inventory adjustment strategy corresponding to the inventory consumption information is generated; the logistics processing task corresponding to the inventory adjustment strategy is created based on the logistics connection model, and then the logistics management of each type of drill bit in the drill bit logistics system is realized based on the logistics processing task. Among them, the terminal 401 can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things device can be a smart speaker, a smart TV, a smart air conditioner, a smart vehicle-mounted device, a projection device, etc. The portable wearable device can be a smart watch, a smart bracelet, a head-mounted device, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc.

[0092] In an exemplary embodiment, as shown in Figure 5 , a drill bit inventory management method based on logistics management is provided, which is applied to the terminal 401 in Figure 4 for example, including the following steps 502 to 508. Among them:

[0093] Step 502, modeling the logistics connection relationship of different equipment in the drill bit logistics system by a directed graph to obtain a logistics connection model.

[0094] Among them, the directed graph (Directed Graph, Digraph) is an important structure in graph theory, which is composed of a set of vertices and a set of directed edges, and is used to represent the one-way relationship between vertices, and is widely used in task scheduling, path planning, network analysis and other fields. The motion direction and path of the box in the drill bit logistics process are represented by a directed graph.

[0095] Exemplarily, in system modeling, after decoupling the devices in the drill bit management system by the material taking and placing mechanism and the logistics line and the AGV, each device can be placed at a suitable position according to actual placement needs, and the logistics connection relationship between the devices is no longer limited by fixed physical connection. In order to accurately describe and manage these complex logistics connection relationships, a directed graph structure is used for modeling to obtain a logistics connection model in the system, and then the optimal logistics planning processing can be performed based on the logistics connection model combined with the specific drill bit material inventory and device material demand. In a specific embodiment, the present application can model the corresponding devices on the terminal 401 through the drill bit logistics system configuration information, and then the distance relationship and connection relationship between the devices can be set to realize the automatic logistics processing between the devices in the actual production scene. The drill bit logistics system configuration information refers to the positions of the drilling machines, grinding machines and various devices of the drill bit management system in the production scene. When the user needs to realize the inventory management of the drill bit logistics in the actual production scene, the user can first configure the various devices participating in the drill bit logistics process on the terminal 401 in a modeling manner according to the actual workshop setting, or according to the workshop environment and production needs of the production workshop, and the devices include drilling machines, grinding machines and drill bit management systems. For the drill bit management system, the devices in the drill bit management system need to be modeled.

[0096] In step 504, logistics demand information of a demand-side device in the drill bit logistics system is obtained.

[0097] The demand-side device refers to a device that needs to use drill bit materials, and includes at least one of a needle matching machine, a box sorting machine corresponding to the needle matching machine, a buffer warehouse and a box sorting machine.

[0098] Exemplarily, after the logistics connection model is established, the logistics demand information of the demand-side device in the drill bit logistics system can be determined first, including historical demand, real-time demand and forecast demand. Then, based on the demand information, the system logistics can be planned in advance, and the inventory management control of the three-dimensional warehouse can be realized, the inventory can be reduced, the drill bit circulation can be accelerated, and the operation efficiency of the drill bit management system can be improved. In a specific embodiment, for the demand that needs to be predicted, a neural network model can be trained to predict the neural network model, and then the demand prediction processing can be performed based on the model.

[0099] In step 506, inventory consumption information of a three-dimensional warehouse in the drill bit management system is determined based on the logistics demand information, and an inventory adjustment strategy corresponding to the inventory consumption information is generated.

[0100] The inventory consumption information refers to the information of the inventory of each type of drill bit in the stereoscopic warehouse changing with time, which can specifically include the current inventory information, the historical demand information of each type of drill bit at the demand end, and the currently known demand information and the predicted future demand information. The inventory of each type of drill bit in each stereoscopic warehouse can be analyzed to determine the dynamic change of the inventory of the drill bit. The inventory adjustment strategy is a strategy for adjusting the inventory of the stereoscopic warehouse based on the inventory consumption information to achieve the purposes of inventory safety, optimization of inventory structure, and rapid meeting of the demand of the equipment at the demand end. The inventory adjustment strategy specifically includes a replenishment strategy and a return strategy. In addition to these inventory adjustment strategies, the upper limit of the inventory of the stereoscopic warehouse and the safety inventory can be adjusted through the stereoscopic warehouse inventory configuration strategy.

[0101] Exemplarily, as the specific machining process proceeds, the material box also flows among the devices of the drill bit logistics system. Therefore, to ensure the efficient logistics operation of the drill bit, the inventory consumption process of the stereoscopic warehouse can be modeled, and each type of drill bit in each stereoscopic warehouse can be analyzed separately. Based on the actual and predicted demand information, an inventory adjustment strategy for adjusting the inventory of the drill bit in the stereoscopic warehouse is generated. In addition to the inventory adjustment strategy, for the inventory of the stereoscopic warehouse itself, the upper limit of the inventory of each type of material in the stereoscopic warehouse and the safety inventory can be dynamically adjusted through the stereoscopic warehouse inventory configuration strategy, the inventory structure is dynamically optimized, the smooth operation of replenishment and return is ensured, the overstock or shortage of inventory is avoided, the space utilization and material turnover efficiency of the stereoscopic warehouse are improved, and the fine and intelligent management of the inventory is realized. Through the stereoscopic warehouse replenishment strategy, the drill bit needed can be as close as possible to the demand end of the needle matching machine and other equipment, so as to reduce the waiting time of the demand end and maximize the operation efficiency of the demand end equipment. Through the stereoscopic warehouse return strategy, the material no longer needed can be removed or reduced from the stereoscopic warehouse in a timely and orderly manner, the storage space is released for new materials or frequently used materials, the overstock of inventory is reduced, the reasonable structure and dynamic balance of the inventory are maintained, and the logistics smoothness and overall operation efficiency between the stereoscopic warehouses are improved.

[0102] In step 508, a logistics processing task corresponding to the inventory adjustment strategy is created based on the logistics connection model.

[0103] Exemplarily, after determining the inventory adjustment strategy, in order to more efficiently complete the adjustment of the inventory quantity of the drill bit in the stereoscopic warehouse, a logistics processing scheme that can meet the inventory adjustment strategy can be determined based on the previously established logistics connection model. When calculating the logistics processing scheme for the inventory adjustment, factors considered include: the inventory quantity of the source warehouse, the distance / cost / price of the inventory adjustment, and the degree of congestion of the logistics line. Then the logistics processing task is sent to the corresponding terminal of the system to automatically perform the logistics-related processing. Through the logistics processing task, the inventory adjustment is effectively realized, and it is ensured that the drill bit logistics system and the production and processing process based on the drill bit logistics system can effectively and efficiently operate.

[0104] The drill bit inventory management method described above models the logistics connection relationship of different devices in the drill bit logistics system through a directed graph to obtain a logistics connection model; acquires logistics demand information of a demand-side device in the drill bit logistics system; determines inventory consumption information of a stereoscopic warehouse in the drill bit management system based on the logistics demand information, and generates an inventory adjustment strategy corresponding to the inventory consumption information; and creates a logistics processing task corresponding to the inventory adjustment strategy based on the logistics connection model. The present application realizes logistics connection modeling of the drill bit logistics system through the logistics connection relationship between devices. When the logistics demand is generated at the demand side, the inventory adjustment strategy of the system can be generated through the logistics demand information, and the logistics processing task can be created in combination with the logistics connection model, which is also conducive to realizing efficient and automatic transfer of the magazine between heterogeneous devices.

[0105] The present application decouples the drill bit management system device through the material taking and placing mechanism and the logistics line, facilitates flexible adjustment of the device placement position, and increases or decreases the device on demand, realizes efficient and automatic transfer of the magazine between heterogeneous devices, reduces manual intervention and errors, and reduces labor costs. In combination with the inventory adjustment strategy of the present application, the drill bit management system device can be adaptively placed at any position, and the probability of the demand-side device operating at the maximum efficiency within a 30-day operating cycle is more than 90%. In addition, the modular stereoscopic warehouse design can be realized through the method of the present application, so that the space requirement of the drill house site is low, distributed implementation with high flexibility can be made according to the actual situation, the inventory capacity can be flexibly adjusted on demand, and waste of inventory is avoided.

[0106] In one exemplary embodiment, step 502 includes: identifying a device pair having a logistics connection relationship in the drill bit logistics system; constructing a connection relationship triple of the device pair, the connection relationship triple including a terminal device, a starting device, and a transfer loss; generating a directed graph of the drill bit logistics system based on the connection relationship triple; and constructing a logistics connection model of the drill bit logistics system based on the directed graph and a preset logistics target, the preset logistics target corresponding to the transfer loss.

[0107] Among them, the logistics connection relationship existing in the drill bit logistics system refers to the relationship that the material (magazine) to be transferred can be directly transferred from one device to another device, and these two devices form a device pair. For example,Figure 4 In the embodiment shown, the material taking and placing mechanism takes out the magazine loaded with drill bits from the stereoscopic warehouse 2 and places it on the logistics line connecting the stereoscopic warehouse 2 and the stereoscopic warehouse 1. The magazine is transmitted to the stereoscopic warehouse 1 side through the logistics line, taken out from the logistics line by the material taking and placing mechanism and stored in the stereoscopic warehouse 1, at this time, the stereoscopic warehouse 1 and the stereoscopic warehouse 2 have a logistics connection relationship, forming a device pair. The connection relationship triple based on the device pair includes an end device, a start device and a transfer loss, and the transfer loss specifically refers to the distance / cost / price of transferring materials from one device to another device. The specific transfer loss type can be set according to actual production needs. Based on the connection relationship triple corresponding to different device pairs, a complete directed graph of the drill bit logistics system can be generated, in which each node represents a specific device, the direction of the edge represents the flow direction of the logistics, and the weight of the edge represents the transfer loss. The logistics connection between the two devices can be realized through other devices, and the total transfer loss of transferring materials between them is the sum of the transfer losses through other devices.

[0108] Exemplarily, for the logistics connection model, the device pairs having a logistics connection relationship in the drill bit logistics system can be identified in advance, and the connection relationship triple is used to describe this connection relationship. The triple (Des, Src, Dist / Cost), in which Des represents the end device, Src represents the start device, and Dist / Cost represents the distance / cost / price of transferring materials from Src to Des. After the construction of all triples of the two devices having a logistics connection relationship in a physical sense, a directed graph structure is constructed based on these triples. Then, based on the specified logistics target, the corresponding solving algorithm can be used to obtain all reachable logistics connection relationships of a certain specific Des. The preset logistics target is related to the transfer loss in the triple establishment process, such as setting the transfer loss as distance, and the preset logistics target can include minimizing the logistics transportation distance, and setting the transfer loss as cost, and the preset logistics target can include minimizing the logistics cost. The directed graph of the drill bit logistics system can refer to Figure 6 As shown, there is a one-way logistics connection relationship from the device D to the device A, and the transfer loss of transferring materials is 5; there are 3 logistics connection relationships from the device D to the device A, which are device D→device A, device D→device B→device A and device D→device C→device A, and the total transfer loss of transferring materials is 5, 4 and 6 respectively. In this embodiment, the logistics connection relationship of the drill bit logistics system is modeled by establishing the connection relationship triple, and then the efficient logistics circulation between the devices in the system can be realized based on the logistics connection model, while effectively optimizing the logistics loss.

[0109] In an example embodiment, the obtaining of the logistics demand information of the demand-side device in the drill bit logistics system comprises: obtaining historical demand information and current demand information of each type of drill bit within an observation window; inputting the historical demand information into a demand prediction model to obtain corresponding predicted demand information of each type of drill bit, the demand prediction model being trained based on demand data of each type of drill bit in historical data; and aggregating the predicted demand information, the historical demand information and the current demand information to obtain the logistics demand information.

[0110] For example, when obtaining the logistics demand information, the present application can combine historical demand information to predict future logistics demand information. That is, a demand prediction model is trained in advance based on demand data of each type of drill bit in historical data, and then the demand information of the demand-side device is predicted in advance based on the model to provide help for the generation of inventory adjustment strategies in the inventory management process. is the material number of the drill bit The historical demand information of the material number within an observation window is The historical demand information of the material number within an observation window is is a feature generation and transformation function in the demand prediction model is a neural network model for demand prediction, and the material number The predicted demand quantity of the material number at a future time is The predicted demand quantity of the material number at a future time is

[0111]

[0112] wherein represents the historical demand information of the material number In addition, the predicted logistics demand information can be provided together with the historical demand information and real-time logistics demand information to the logistics system to ensure the comprehensiveness of the data and improve the analysis accuracy. In the present embodiment, the future drill bit demand information is predicted based on the historical demand information by the demand prediction model, and then the predicted demand information, the historical demand information and the current demand information are aggregated to obtain the logistics demand information, which can effectively improve the accuracy and processing efficiency of demand prediction.

[0113] In an example embodiment, the step 506 comprises: for each stereoscopic warehouse, determining the inventory consumption rate of each type of drill bit in the stereoscopic warehouse based on the logistics demand information; modeling the inventory consumption process of each type of drill bit for each stereoscopic warehouse according to the inventory information and the inventory consumption rate of each type of drill bit in the stereoscopic warehouse to obtain inventory consumption information; and generating an inventory adjustment strategy for each type of drill bit in the stereoscopic warehouse based on the inventory consumption information.

[0114] For example, inventory consumption rate is used to characterize the change in inventory of various specifications of drill bits within an automated warehouse per unit time. For each type of drill bit in the automated warehouse, the inventory consumption rate can be determined using real-time received and predicted logistics demand information. By combining the current inventory information and the inventory consumption rate within the automated warehouse, the inventory consumption process for each type of drill bit can be modeled, yielding inventory consumption information. This inventory information includes real-time inventory, the automated warehouse's safety stock, and the inventory ceiling. For details on modeling the inventory consumption process using this information, please refer to... Figure 7 As shown, where Indicates the time when the demand arrives; Indicates the start time of restocking; Indicates the time when the demand is met / the end; This indicates the window of time after the demand has been met or ended; For demand; As the upper limit of inventory, in The current inventory level is equal to the current inventory level. This is for replenishment. This is the safety stock level. For a given inventory depletion process, in... Constantly monitor demand and begin the inventory depletion process accordingly. Figure 7 The processes ①, ②, and ③ shown in the diagram; when the inventory level is depleted to the replenishment line. When this happens, it is necessary to start replenishing inventory. The dynamic change process of inventory after replenishment is either ② or ③.

[0115] Therefore, for the inventory consumption process, let's assume that... When receiving demands, the following three relationships should exist:

[0116] Relationship 1: Self Time's up At any given time, ① the sum of the consumption of the process and the replenishment of the dynamic process must at least meet the demand, and at most reach the sum of the demand and the inventory ceiling:

[0117]

[0118] in, To speed up inventory replenishment.

[0119] Relationship 2: Self Time's up At any given time, the sum of the inventory level in process ③ and the replenishment level in the dynamic process, minus the consumption in the dynamic process, must be at least greater than the safety stock.

[0120]

[0121] in, This consumes speed.

[0122] Relationship 3: from the start time, the inventory at the start time the sum of the replenishment amount of the dynamic process, minus the demand amount, at least greater than the safety stock:

[0123]

[0124] Therefore, in combination with the inventory consumption information, in combination with the above three relationships, the inventory adjustment strategy of each type and specification of the drill bit in the stereoscopic warehouse can be generated, such as the stereoscopic warehouse replenishment strategy, the stereoscopic warehouse return strategy, etc. In addition to the inventory adjustment strategy, the stereoscopic warehouse inventory configuration strategy can also be generated to update and adjust the inventory information of the stereoscopic warehouse, such as adjusting the safety stock and the upper limit of the inventory of the stereoscopic warehouse, so as to achieve the above inventory consumption process, ensure the effective management of the drill bit inventory, and ensure the efficient flow of the drill bit logistics process and the normal production and processing process. In this embodiment, the inventory consumption process of the drill bit is modeled based on the logistics demand of the stereoscopic warehouse, the inventory consumption information is obtained, and thus an effective inventory adjustment strategy is formulated to ensure that the inventory adjustment and logistics management are accurately and efficiently executed.

[0125] In an exemplary embodiment, before modeling the inventory consumption process of each type and specification of drill bit in each stereoscopic warehouse to obtain the inventory consumption information according to the inventory information and the inventory consumption speed of each type and specification of drill bit in the stereoscopic warehouse, it further includes: determining the current inventory information of each type and specification of drill bit in each stereoscopic warehouse, and the historical demand information and the current demand information of each type and specification of drill bit at the demand end; based on the current inventory information, the historical demand information and the current demand information, determining the safety stock and the upper limit of the inventory of each type and specification of drill bit in the stereoscopic warehouse through Bayesian estimation; and updating the inventory information of each type and specification of drill bit in the stereoscopic warehouse based on the safety stock and the upper limit of the inventory.

[0126] Among them, Bayesian estimation is a statistical method based on Bayes theorem, which mainly infers unknown parameters by combining prior knowledge and observation data, and is particularly suitable for processing data conforming to normal distribution. In the scheme of the present application, the adjustment of the upper limit of the inventory and the safety stock in the stereoscopic warehouse inventory is mainly realized through Bayesian estimation. As for the historical demand information and the current demand information, the current demand information refers to the demand information generated by the needle sorting machine, the needle box sorting, the buffer warehouse, the box sorting device, etc. and has not been met. These demand information will be put forward in the form of work order and will be processed in order. The work order contains the drill bit model and quantity required by the demand end. The historical demand information is the demand information that has been completed.

[0127] Exemplarily, in addition to the inventory adjustment strategy, the application can also adjust the inventory information in the stereoscopic warehouse through a stereoscopic warehouse inventory configuration strategy. For the inventory information adjustment process of the stereoscopic warehouse, the upper limit of the inventory, the safety stock and the like can be adjusted through the Bayesian estimation, so as to ensure the effectiveness of the inventory management process and fit the above-mentioned three relationships of inventory consumption. Therefore, the current inventory information of each type of specification drill bit in each stereoscopic warehouse and the historical demand information and the current demand information of each type of specification drill bit at the demand end can be determined first. Then, the Bayesian estimation is processed based on the information to determine the prior distribution and the posterior distribution of the Bayesian estimation, and the real-time inventory information is adjusted through the posterior distribution. In the embodiment, the stereoscopic warehouse inventory configuration strategy is set to dynamically adjust the upper limit of the inventory and the safety stock of each type of drill bit in the stereoscopic warehouse, dynamically optimize the inventory structure, ensure the smooth operation of the warehouse replenishment and warehouse return, avoid inventory accumulation or shortage, improve the space utilization rate and the material turnover efficiency of the stereoscopic warehouse, and realize the refinement and intelligentization of the inventory management.

[0128] Further, based on the current inventory information, the historical demand information and the current demand information, the safety stock and the upper limit of the inventory of each type of specification drill bit in the stereoscopic warehouse are determined through the Bayesian estimation, including: based on the current inventory information and the historical demand information and the current demand information of each type of specification drill bit at the demand end, generating Bayesian prior distribution parameters; based on the newly observed demand information and the Bayesian prior distribution parameters, generating Bayesian posterior distribution parameters; obtaining the service level coefficient, the replenishment lead time and the demand prediction coverage period corresponding to the stereoscopic warehouse; based on the service level coefficient, the replenishment lead time and the Bayesian posterior distribution parameters, determining the safety stock of each type of specification drill bit; based on the replenishment lead time, the demand prediction coverage period, the Bayesian posterior distribution parameters and the safety stock, determining the upper limit of the inventory of each type of specification drill bit.

[0129] Exemplarily, for the process of Bayesian estimation, the current inventory information, the historical demand information and the current demand information of each type of specification drill bit in each stereoscopic warehouse can be determined first, and then the prior distribution of the Bayesian estimation is established based on the inventory and the actual demand information. For a specified stereoscopic warehouse, the current inventory information , the historical demand information and the currently known demand information of the warehouse are monitored in real time to comprehensively determine whether the inventory upper limit and the safety stock of each material number in the current warehouse need to be adjusted and whether the current inventory structure needs to be optimized. First, the current inventory information, the historical demand information and the current demand information of the current warehouse are obtained. Then, the normal prior distribution is calculated based on the obtained data:

[0130]

[0131] wherein, , .

[0132] Then, based on the newly observed demand information and the Bayesian prior distribution parameters, Bayesian posterior distribution parameters are generated. Based on each new observed demand data , the posterior parameters are updated:

[0133]

[0134]

[0135] wherein, is the mean of the new observed demand data, is the variance of the new observed demand data. After that, on the basis of Bayesian estimation, combined with various known information, the update of safety stock and inventory upper limit is realized. Specifically, the service level coefficient, the replenishment lead time and the demand prediction coverage period of the stereoscopic warehouse are obtained as known information. By combining the service level coefficient, the replenishment lead time and the Bayesian posterior distribution parameters, the safety stock of each type of drill is determined. In combination with the replenishment lead time, the demand prediction coverage period, the Bayesian posterior distribution parameters and the safety stock, the inventory upper limit of each type of drill is determined, and the two processes can be represented as:

[0136]

[0137]

[0138]

[0139] wherein, is the service level coefficient, is the replenishment lead time, is the demand prediction coverage period. Finally, the stereoscopic warehouse inventory configuration task is generated to realize the inventory information update and adjustment processing of the stereoscopic warehouse in the system. In this embodiment, through Bayesian estimation, the inventory of the stereoscopic warehouse is modeled combined with specific inventory demand, so as to accurately estimate the safety stock and the inventory upper limit, which can effectively guarantee the rationality of inventory configuration and inventory adjustment.

[0140] ​​​In an exemplary embodiment, the inventory adjustment strategy includes a three-dimensional warehouse replenishment strategy. Based on the inventory consumption information, generating the inventory adjustment strategy of each type and specification of drill bits in the three-dimensional warehouse includes: based on the inventory consumption information, determining the current inventory information of each type and specification of drill bits in the three-dimensional warehouse, obtaining the upper limit of the inventory of the three-dimensional warehouse, the safety stock and the replenishment speed, and the current demand information and the predicted demand information of each type and specification of drill bits at the demand end; obtaining the demand urgency of each type and specification of drill bits at the demand end, the consumption speed of the demand end and the demand prediction accuracy; based on the current inventory information, the upper limit of the inventory, the safety stock, the current demand information, the predicted demand information, the demand urgency, the consumption speed of the demand end and the demand prediction accuracy, determining the replenishment priority of each type and specification of drill bits, based on the current inventory information, the upper limit of the inventory, the safety stock, the replenishment speed, the current demand information, the predicted demand information, the consumption speed of the demand end and the demand prediction accuracy, determining the replenishment quantity of each type and specification of drill bits; based on the replenishment priority and the replenishment quantity, generating the three-dimensional warehouse replenishment strategy of each type and specification of drill bits in the three-dimensional warehouse.

[0141] Exemplarily, the inventory adjustment strategy can include a stereoscopic warehouse replenishment strategy, i.e., replenishing drill bits of a specified specification into a specific stereoscopic warehouse. The stereoscopic warehouse replenishment strategy uses a pull-type replenishment, and the core idea is to pull the source warehouse to replenish by the demand end and the replenishment demand of the stereoscopic warehouse itself. Here, the source warehouse refers to, in the actual logistics communication relationship, a starting warehouse that has an actual logistics communication relationship with a terminal device, and the terminal device is a certain device or a certain stereoscopic warehouse of the demand end. In logic, the inlet of the stereoscopic warehouse is regarded as a stereoscopic warehouse with unlimited capacity. For the specific process of replenishment, the current inventory information of each specification of drill bits in the stereoscopic warehouse can be determined based on the inventory consumption information, and the upper limit of the inventory of the stereoscopic warehouse, the safety stock and the replenishment speed, the current demand information and the predicted demand information of each specification of drill bits of the demand end are obtained. The inventory consumption information is obtained by modeling the initial inventory information and the inventory consumption speed of the working process, and the logistics demand information is introduced. Therefore, the inventory consumption information here includes: current inventory information (initial inventory minus consumption in the working process), historical demand information (actual received demands of each type in the working process), and current known demand information (obtained through logistics demand information), predicted future demand information (obtained through demand prediction model prediction), so the current demand information and the predicted demand information of the demand end for drill bits can be directly obtained. In addition, for the replenishment process, the demand urgency of each specification of drill bits, the consumption speed of the demand end, the replenishment speed and the demand prediction accuracy need to be combined, wherein the demand urgency of different types of drill bits is determined by the order sequence of the work order put forward by the demand end. After obtaining the above information, the replenishment priority and the replenishment quantity can be calculated by applying these information, wherein the replenishment priority is used to determine the sequence of material replenishment, and the replenishment quantity determines the quantity of material replenishment. In application, the future demand information can be predicted by using the demand prediction model , combined with the current inventory information, the upper limit of the inventory, the safety stock, the current demand information, the predicted demand information, the demand urgency, the consumption speed of the demand end and the demand prediction accuracy, to calculate the replenishment priority of each material number :

[0142]

[0143] Here, represents the real demand information and the predicted demand information at the current time, is the demand urgency of the material number at the current time, represents the current inventory information, represents the upper limit of the inventory, represents the safety stock, is the consumption speed of the demand end of the material number at the current time, is the demand prediction accuracy of the material number at the current time.

[0144] and based on the current inventory information, the upper limit of inventory, the safety stock, the replenishment speed, the current demand information, the predicted demand information, the demand consumption speed and the demand prediction accuracy, the replenishment quantity of each replenishment material number (corresponding to a type of drill bit) is calculated :

[0145]

[0146] wherein, is the replenishment speed of the material number at the current time.

[0147] Then, combined with the replenishment priority and the replenishment quantity, the three-dimensional warehouse replenishment strategy of each type of drill bit in the three-dimensional warehouse is generated. For the replenishment strategy, a logistics processing task can also be created in combination with the logistics connection model. Specifically, the transfer warehouse scheme of each replenishment material number can be calculated based on the logistics connection relationship between devices. The factors considered when calculating the transfer warehouse scheme include: the inventory quantity of the source warehouse, the transfer distance / cost / cost, the degree of congestion of the logistics line, and finally the corresponding replenishment task is generated In this embodiment, the three-dimensional warehouse inventory is adjusted through the three-dimensional warehouse replenishment strategy, so that the needed drill bits are as close as possible to the demand end of the needle matching machine and other devices, thereby reducing the waiting time of the demand end and maximizing the operating efficiency of the demand end device.

[0148] In an exemplary embodiment, the inventory adjustment strategy includes a three-dimensional warehouse withdrawal strategy. Based on the inventory consumption information, the inventory adjustment strategy of each type of drill bit in the three-dimensional warehouse includes: based on the inventory consumption information, determining the current inventory information of each type of drill bit in the three-dimensional warehouse, and the historical demand information, the current demand information and the predicted demand information of each type of drill bit at the demand end; obtaining the demand prediction accuracy of each type of drill bit at the demand end; based on the current inventory information, the historical demand information, the current demand information, the predicted demand information and the demand prediction accuracy, determining the withdrawal priority and the withdrawal quantity of each type of drill bit; based on the withdrawal priority and the withdrawal quantity, generating a three-dimensional warehouse withdrawal strategy of each type of drill bit in the three-dimensional warehouse.

[0149] Exemplarily, the inventory adjustment strategy can further include a three-dimensional warehouse withdrawal strategy, i.e., removing the materials of a specified specification that are no longer needed from the current three-dimensional warehouse. The materials are transferred out of the three-dimensional warehouse, and the destination includes two: one is transferred from one three-dimensional warehouse to another three-dimensional warehouse; the other is completely removed from the three-dimensional warehouse and separated from the drill bit management system. For the specific process of the replenishment, the current inventory information, historical demand information, current demand information, predicted demand information, and demand prediction accuracy of each type of specification drill bit in each three-dimensional warehouse can be determined based on the inventory consumption information. Then, based on this information, the withdrawal priority and the withdrawal quantity are calculated, wherein the withdrawal priority is used to determine the order of material withdrawal, and the withdrawal quantity determines the quantity of material withdrawal. In application, the future demand information can be predicted using a demand prediction model , real-time monitoring of the current inventory of the warehouse , current demand information , predicted demand information , historical demand information , and the material withdrawal priority and withdrawal quantity are calculated. For the calculation process of the withdrawal priority :

[0150]

[0151] and the replenishment quantity of each replenishment material number (corresponding to a type of specification drill bit) is calculated :

[0152]

[0153] Then, combined with the withdrawal priority and the withdrawal quantity, the three-dimensional warehouse withdrawal strategy of each type of specification drill bit in the three-dimensional warehouse is generated. For the withdrawal strategy, a logistics processing task can also be created in combination with a logistics connection model. Specifically, the transfer scheme of each withdrawal material number can be calculated based on the logistics connection relationship between the devices. The factors considered in calculating the withdrawal scheme include: the inventory quantity of the target warehouse, the transfer distance / cost / price, the degree of congestion of the logistics line, and finally the corresponding replenishment task is generated In this embodiment, the three-dimensional warehouse inventory is adjusted through the three-dimensional warehouse withdrawal strategy to ensure that the materials that are no longer needed can be removed or reduced from the three-dimensional warehouse in a timely and orderly manner, to create storage space for new materials or frequently used materials, reduce inventory backlog, maintain a reasonable structure and dynamic balance of the inventory, and improve the logistics flow and overall operation efficiency between the three-dimensional warehouses.

[0154] In a specific embodiment, the drill bit management system device layout in the present application can specifically refer to Figure 3The drill bit management system is initially landed, and each device is connected by using a stacker and a logistics line. Then, the mechanical, electrical, and software of each device are jointly debugged to ensure the basic functions of the drill bit management system are normal. After the joint debugging of the drill bit management system is completed, the modeling method of the "logistics connection model" of the present application is used to model the logistics connection relationship of the devices in logic, for example:

[0155]

[0156]

[0157]

[0158] wherein SA_x represents a stereoscopic warehouse number, SA_0 represents an inlet number, and GA_x represents a needle matching machine. The modeling method of the logistics connection relationship of the remaining devices is similar and is not described herein. Herein, SA_1 is equivalent to the first stereoscopic warehouse, SA_2 is equivalent to the second stereoscopic warehouse, and the same applies hereafter. Since the new device lacks historical data, the inventors simply configure the inventors to two stereoscopic warehouses, for example, three types of drill bits A, B, and C are set as follows:

[0159] (SA_1, A, 4500, 450)

[0160] (SA_1, B, 90000, 4500)

[0161] (SA_1, C, 50000, 9000)

[0162] wherein the first element of each four-tuple represents a stereoscopic warehouse number, the second element represents a material number, the third element represents an upper limit of inventory, and the fourth element represents a safety stock. After this, the two stereoscopic warehouses logically store the corresponding material numbers to achieve the initialization setting of the inventory structure. At this time, the stereoscopic warehouse replenishment strategy is used, and the replenishment tasks of the two stereoscopic warehouses can be calculated and generated. Taking the A type of the SA_1 warehouse as an example, the priority of the material number A is first calculated:

[0163]

[0164] Then, the replenishment amount of the material number A is calculated:

[0165]

[0166] Finally, the replenishment task is generated:

[0167] {T_03, SA_1, SA_0, A, 300}

[0168] This replenishment task The first element is the replenishment task number, the second element is the stereoscopic warehouse number that needs to be replenished, the third element is the source warehouse number, the fourth element is the part number that needs to be replenished, and the fifth element is the replenishment quantity; that is, the replenishment task numbered T_03 needs to replenish 300 A type drill bits from the inlet to the SA_1 warehouse.

[0169] At this time, for the A type replenishment task of the stereoscopic warehouse 1 described above, 300 parts need to be replenished from the inlet, and because the stereoscopic warehouse 2 lacks A type, the generated replenishment task clearly indicates that replenishment from the inlet is needed. The part number and quantity indicated by the corresponding replenishment task are replenished into the stereoscopic warehouse by manual or other automated means.

[0170] When the demand end device has a demand task, such as when the needle matching machine receives a needle matching work order, the replenishment task calculation logic at this time is the same as the above-described replenishment task calculation logic. By inputting the real demand information and the predicted demand information at the current time, the demand urgency information of the part number at the current time, the inventory quantity of the part number in all stereoscopic warehouses at the current time, the corresponding inventory upper limit at the current time, the corresponding safety inventory at the current time, the demand end consumption speed of the part number at the current time, and the demand prediction accuracy of the part number at the current time, the replenishment priority of the part number can be calculated. The subsequent process of calculating the replenishment quantity and generating the replenishment task is similar to the foregoing, and the calculation can be completed by inputting the corresponding data, which will not be described here.

[0171] The drill bit management system based on the automatic logistics system constructed by the stacker and the logistics line of the present application transports drill bits to corresponding devices, such as from the inlet to the stereoscopic warehouse 1 and from the stereoscopic warehouse 1 to the needle matching machine; after the needle matching machine completes the needle matching, based on the connection of the part box handling device of the present application, the drill bits are sent to devices such as the grinding machine and the drilling machine.

[0172] After the drill bit management system runs for a period of time, a large amount of idle inventory may be generated in the stereoscopic warehouse, and the inventory structure of the stereoscopic warehouse is not reasonable, which affects the running efficiency of the stereoscopic warehouse. The inventory configuration strategy is used to optimize the inventory structure. Assuming that 10 new observed demand data of A type have been received, the mean of the 10 new demand data is calculated to be 103.3, and the variance is 20, while the mean of the historical demand in the past 10-day observation window is 100, and the variance is 25, so the posterior mean and the posterior variance can be calculated as follows:

[0173]

[0174]

[0175] The new safety inventory and the inventory upper limit are calculated as follows:

[0176]

[0177]

[0178] The new safety stock and the upper limit of inventory are both rounded up to 4,519; using the rounded safety stock and the upper limit of inventory, the inventory structure of the stereoscopic warehouse can be adjusted. The data used in the calculation here are all examples.

[0179] When the stereoscopic warehouse is full and cannot be replenished or periodically optimizes the inventory structure, the stereoscopic warehouse withdrawal strategy can be used to generate a withdrawal task for a specific material number, and after executing the withdrawal task, the inventory structure of the stereoscopic warehouse will be dynamically and real-time optimized, which can physically reduce the stale inventory of the stereoscopic warehouse. The calculation process of generating the withdrawal task is similar to the above-mentioned stereoscopic warehouse replenishment task generation process, which will not be described here.

[0180] Running the stereoscopic warehouse inventory configuration strategy, the stereoscopic warehouse replenishment strategy, and the stereoscopic warehouse withdrawal strategy at appropriate frequencies can effectively improve the operation efficiency of the stereoscopic warehouse and the operation efficiency of the equipment at the demand end, thereby improving the overall operation efficiency of the drill house.

[0181] It should be understood that although each step in the flowchart involved in the above embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, at least part of the steps in the flowchart involved in the above embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be alternately or alternately executed with at least part of other steps or steps or stages in other steps.

[0182] Based on the same inventive concept, the embodiments of the present application also provide a drill bit inventory management device for implementing the above-mentioned drill bit inventory management method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more drill bit inventory management device embodiments provided below can refer to the limitations of the drill bit inventory management method based on logistics management described above, which will not be described here.

[0183] In one exemplary embodiment, as shown in Figure 8 a drill bit inventory management device is provided, which is arranged in the above-mentioned drill bit logistics system, and the device comprises:

[0184] The communication relationship modeling module 801 is configured to model the logistics communication relationship between different devices in the drill bit logistics system through a directed graph to obtain a logistics communication model.

[0185] The demand acquisition module 803 is configured to acquire logistics demand information of the demand-side device in the drill bit logistics system.

[0186] The inventory strategy generation module 805 is configured to determine inventory consumption information of the stereoscopic warehouse in the drill bit management system based on the logistics demand information, and generate an inventory adjustment strategy corresponding to the inventory consumption information.

[0187] The logistics processing module 807 is configured to create a logistics processing task corresponding to the inventory adjustment strategy based on the logistics connection model.

[0188] In one embodiment, the connection relationship modeling module 801 is specifically configured to: identify pairs of devices having a logistics connection relationship in the drill bit logistics system; construct a connection relationship triple of the device pair, the connection relationship triple including a terminal device, a starting device, and a transfer loss; generate a directed graph of the drill bit logistics system based on the connection relationship triple; and construct a logistics connection model of the drill bit logistics system based on the directed graph and a preset logistics target, the preset logistics target corresponding to the transfer loss.

[0189] In one embodiment, the demand acquisition module 803 is specifically configured to: acquire historical demand information and current demand information of each type of drill bit within an observation window; input the historical demand information into a demand prediction model to obtain predicted demand information corresponding to each type of drill bit, the demand prediction model being trained based on demand data of each type of drill bit in historical data; and aggregate the predicted demand information, the historical demand information, and the current demand information to obtain the logistics demand information.

[0190] In one embodiment, the inventory strategy generation module 805 is specifically configured to: for each stereoscopic warehouse, determine an inventory consumption rate of each type of drill bit in the stereoscopic warehouse based on the logistics demand information; model an inventory consumption process of each type of drill bit for each stereoscopic warehouse based on inventory information of each type of drill bit in the stereoscopic warehouse and the inventory consumption rate to obtain inventory consumption information; and generate an inventory adjustment strategy of each type of drill bit in the stereoscopic warehouse based on the inventory consumption information.

[0191] In one embodiment, the inventory information adjustment module is further configured to: determine current inventory information of each type of drill bit in each stereoscopic warehouse, and historical demand information and current demand information of each type of drill bit by the demand side; determine a safety stock and an upper limit of inventory of each type of drill bit in the stereoscopic warehouse based on the current inventory information, the historical demand information, and the current demand information through Bayesian estimation; and update the inventory information of each type of drill bit in the stereoscopic warehouse based on the safety stock and the upper limit of inventory.

[0192] In an embodiment, the inventory information adjustment module is specifically configured to: generate a Bayesian prior distribution parameter based on the current inventory information, the historical demand information and the current demand information; generate a Bayesian posterior distribution parameter based on the newly observed demand information and the Bayesian prior distribution parameter; obtain a service level coefficient, a replenishment lead time and a demand prediction coverage period corresponding to the stereoscopic warehouse; determine the safety stock of each type of drill bit based on the service level coefficient, the replenishment lead time and the Bayesian posterior distribution parameter; and determine the upper limit of the inventory of each type of drill bit based on the replenishment lead time, the demand prediction coverage period, the Bayesian posterior distribution parameter and the safety stock.

[0193] In an embodiment, the inventory adjustment strategy includes a stereoscopic warehouse replenishment strategy; and the inventory strategy generation module 805 is specifically configured to: determine the current inventory information of each type of drill bit in the stereoscopic warehouse based on the inventory consumption information, and obtain the upper limit of the inventory, the safety stock and the replenishment speed of the stereoscopic warehouse, as well as the current demand information and the predicted demand information of each type of drill bit at the demand end; obtain the demand urgency, the demand end consumption speed and the demand prediction accuracy of each type of drill bit at the demand end; determine the replenishment priority of each type of drill bit based on the current inventory information, the upper limit of the inventory, the safety stock, the current demand information, the predicted demand information, the demand urgency, the demand end consumption speed and the demand prediction accuracy; determine the replenishment quantity of each type of drill bit based on the current inventory information, the upper limit of the inventory, the safety stock, the replenishment speed, the current demand information, the predicted demand information, the demand end consumption speed and the demand prediction accuracy; and generate the stereoscopic warehouse replenishment strategy of each type of drill bit in the stereoscopic warehouse based on the replenishment priority and the replenishment quantity.

[0194] In an embodiment, the inventory adjustment strategy includes a stereoscopic warehouse return strategy; and the inventory strategy generation module 805 is specifically configured to: determine the current inventory information of each type of drill bit in the stereoscopic warehouse based on the inventory consumption information, and obtain the historical demand information, the current demand information and the predicted demand information of each type of drill bit at the demand end; obtain the demand prediction accuracy of each type of drill bit at the demand end; determine the return priority and the return quantity of each type of drill bit based on the current inventory information, the historical demand information, the current demand information and the predicted demand information, and the demand prediction accuracy; and generate the stereoscopic warehouse return strategy of each type of drill bit in the stereoscopic warehouse based on the return priority and the return quantity.

[0195] The above modules in the drill bit inventory management device based on logistics management can be realized by software, hardware and combinations thereof, in whole or in part. The above modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above modules.

[0196] In an exemplary embodiment, a computer device, which can be a terminal, is provided, and an internal structure diagram of the computer device can be as shown in FIG. 1. Figure 9 The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for running the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is configured to exchange information between the processor and external devices. The communication interface of the computer device is configured to perform wired or wireless communication with external terminals. The wireless communication can be achieved through WIFI, mobile cellular network, Near Field Communication (NFC) or other technologies. The computer program is executed by the processor to implement a drill bit inventory management method. The display unit of the computer device is configured to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or can be a key, a trackball or a touchpad arranged on the shell of the computer device, or can be an external keyboard, a touchpad or a mouse, etc.

[0197] Those skilled in the art can understand that Figure 9 The structure shown in the above embodiment is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the diagram, or combine certain components, or have a different arrangement of components.

[0198] In an embodiment, a computer device is also provided, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0199] In an embodiment, a computer readable storage medium is provided, which stores a computer program. The computer program is executed by a processor to implement the steps in the above method embodiments.

[0200] In an embodiment, a computer program product or computer program is provided, which comprises computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device performs the steps in each of the above method embodiments.

[0201] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant regulations.

[0202] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0203] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0204] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A drill bit logistics system, characterized in that, The drill bit logistics system includes a drill bit management system, which comprises an automated warehouse, a drill bit distribution machine, a drill bit return machine, and a box sorting machine. The automated warehouse stores boxes containing drill bits. The drill bit distribution machine distributes small batches of drill bits of various specifications into the same box. The drill bit return machine removes different models of drill bits from the boxes and reassembles them into their corresponding boxes. The box sorting machine receives boxes from the automated warehouse, the drill bit distribution machine, or the drill bit return machine and sorts them into containers. The containers are used to hold the drill bits. The automated warehouse, the drill bit distribution machine, and the automated warehouse... The needle return machine and the box sorting machine are connected via a material handling mechanism and a logistics line. The material handling mechanism is located at a corresponding position in the automated warehouse and is used to retrieve a box from the automated warehouse and place it on the logistics line to transport the box to at least one of the needle distribution machine, the needle return machine, and the box sorting machine. The material handling mechanism is also used to retrieve a box from the logistics line and store the box obtained from the logistics line into the automated warehouse. The drill bit management system is also provided with an interface for connecting to external equipment. The drill bit management system is connected to the external equipment through a box handling device at the interface.

2. The system according to claim 1, characterized in that, The drill bit logistics system also includes a drilling rig and a grinding machine. The drilling rig, the grinding machine, and the drill bit management system are connected by a hopper transport device, which is used to transport the hopper.

3. The system according to claim 1, characterized in that, The drill bit management system also includes a box sorting machine and a box reversing machine. The box sorting machine is used to remove large quantities of drill bits of different specifications from different boxes. The box reversing machine is used to change the orientation of the drill bits loaded in the boxes. The automated warehouse, the needle distribution machine, the needle return machine, the box sorting machine, the box sorting machine, and the box reversing machine are connected by a material handling mechanism and a logistics line. The box sorting machine includes a needle return box sorting machine and a needle distribution box sorting machine. The box sorting machine includes a needle return box sorting machine and a needle distribution box sorting machine. The box reversing machine includes an inbound box reversing machine, a pre-grinding box reversing machine, and a post-grinding box reversing machine.

4. The system according to claim 1, characterized in that, The drill bit management system also includes a buffer library for temporary storage of the material boxes. The buffer library is independently set up in the drill bit management system, or it is set up as a buffer component in the needle feeding machine and the needle return machine. When the buffer library is independently set up in the drill bit management system, the automated storage and retrieval system, the needle feeding machine, the needle return machine, the buffer library, and the box sorting machine are connected through a material handling mechanism and a logistics line.

5. A drill bit inventory management method, applied to the drill bit logistics system according to any one of claims 1 to 4, characterized in that, The method includes: By modeling the logistics connectivity relationships between different devices in the drill bit logistics system using directed graphs, a logistics connectivity model is obtained. Obtain logistics demand information of demand-side equipment in the drill bit logistics system; Based on the logistics demand information, determine the inventory consumption information of the automated warehouse in the drill bit management system, and generate the inventory adjustment strategy corresponding to the inventory consumption information; Based on the logistics connectivity model, create the logistics processing task corresponding to the inventory adjustment strategy.

6. The method according to claim 5, characterized in that, The method of modeling the logistics connectivity relationships between different devices in the drill bit logistics system using directed graphs to obtain the logistics connectivity model includes: Identify device pairs in the drill bit logistics system that have logistics connectivity relationships; Construct a connectivity triplet for the device pair, wherein the connectivity triplet includes the endpoint device, the origin device, and the transfer loss; Based on the connectivity triples, a directed graph of the drill bit logistics system is generated; Based on the directed graph and the preset logistics target, a logistics connectivity model for the drill bit logistics system is constructed, wherein the preset logistics target corresponds to the transfer loss.

7. The method according to claim 5, characterized in that, The process of obtaining logistics demand information for demand-side equipment in the drill bit logistics system includes: Obtain historical and current demand information for various drill bit specifications within the observation window; The historical demand information is input into the demand prediction model to obtain the predicted demand information corresponding to each type of drill bit. The demand prediction model is trained based on the demand data of each type of drill bit in the historical data. By summarizing the predicted demand information, the historical demand information, and the current demand information, logistics demand information is obtained.

8. The method according to claim 5, characterized in that, The process of determining the inventory consumption information of the automated warehouse in the drill bit management system based on the logistics demand information, and generating the corresponding inventory adjustment strategy, includes: For each automated warehouse, based on the aforementioned logistics demand information, determine the inventory consumption rate of various specifications of drill bits in the automated warehouse; Based on the inventory information and inventory consumption rate of various specifications of drill bits in the three-dimensional warehouse, the inventory consumption process of various specifications of drill bits is modeled for each three-dimensional warehouse to obtain inventory consumption information; Based on the aforementioned inventory consumption information, an inventory adjustment strategy for various specifications of drill bits in the automated warehouse is generated.

9. The method according to claim 8, characterized in that, Before obtaining inventory consumption information by modeling the inventory consumption process of various drill bit specifications for each automated storage system based on the inventory information and consumption rate of various drill bit specifications in the automated storage system, the process further includes: Determine the current inventory information of various specifications of drill bits in each automated warehouse, as well as the historical and current demand information for various specifications of drill bits from the demand side; Based on the current inventory information, historical demand information, and current demand information, the safety stock and inventory limit of various specifications of drill bits in the automated warehouse are determined by Bayesian estimation. Based on the safety stock and the upper limit of inventory, update the inventory information of various specifications of drill bits in the automated warehouse.

10. The method according to claim 9, characterized in that, The process of determining the safety stock and upper limit of various specifications of drill bits in the automated warehouse based on the current inventory information, historical demand information, and current demand information, using Bayesian estimation, includes: Based on the current inventory information, the historical demand information, and the current demand information, generate Bayesian prior distribution parameters; Based on the newly observed demand information and the Bayesian prior distribution parameters, generate the Bayesian posterior distribution parameters; Obtain the service level coefficient, replenishment lead time, and demand forecast coverage period corresponding to the automated warehouse; Based on the service level coefficient, the replenishment lead time, and the Bayesian posterior distribution parameters, the safety stock of various specifications of drill bits is determined. Based on the replenishment lead time, the demand forecast coverage period, the Bayesian posterior distribution parameters, and the safety stock, the upper limit of inventory for each type of drill bit is determined.

11. The method according to claim 8, characterized in that, The inventory adjustment strategy includes a three-dimensional warehouse replenishment strategy; The inventory adjustment strategy for various specifications of drill bits in the automated warehouse based on the inventory consumption information includes: Based on the inventory consumption information, the current inventory information of various specifications of drill bits in the automated warehouse is determined, and the upper limit of the inventory, safety stock and replenishment speed of the automated warehouse are obtained, as well as the current demand information and predicted demand information of various specifications of drill bits on the demand side. Obtain information on the urgency of demand for various specifications of drill bits, the rate of consumption on the demand side, and the accuracy of demand forecasting. Based on the current inventory information, the inventory limit, the safety stock, the current demand information, the predicted demand information, the urgency of demand, the consumption rate of demand, and the accuracy of demand forecast, the replenishment priority of various specifications of drill bits is determined, and based on the current inventory information, the inventory limit, the safety stock, the replenishment rate, the current demand information, the predicted demand information, the consumption rate of demand, and the accuracy of demand forecast, the replenishment quantity of various specifications of drill bits is determined. Based on the replenishment priority and the replenishment quantity, a replenishment strategy for various specifications of drill bits in the automated warehouse is generated.

12. The method according to claim 8, characterized in that, The inventory adjustment strategy includes a three-dimensional warehouse return strategy; The inventory adjustment strategy for various specifications of drill bits in the automated warehouse based on the inventory consumption information includes: Based on the aforementioned inventory consumption information, the current inventory information of various specifications of drill bits in the automated warehouse, as well as the historical demand information, current demand information, and predicted demand information of various specifications of drill bits from the demand side are determined. To obtain the accuracy of demand forecasts for various specifications of drill bits from the demand side; Based on the current inventory information, the historical demand information, the current demand information, the predicted demand information, and the demand prediction accuracy, the priority and quantity of return of drill bits of various specifications are determined. Based on the return priority and the return quantity, a three-dimensional warehouse return strategy is generated for various specifications of drill bits in the three-dimensional warehouse.

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