A stereoscopic server production system and control method

Abstract

The application discloses a three-dimensional server production system and a control method, and relates to the technical field of servers.The production system comprises an upper auxiliary material layer, a device layer and a conveying layer arranged in layers.The device layer is arranged with multiple groups of workbenches, and multiple workbenches are arranged in parallel for each process.The auxiliary material layer is provided with lifting trolleys and interlayer connecting conveying devices, which are used for temporarily storing parts and materials and distributing the parts and materials to the workbenches.The conveying layer is provided with lifting conveyors below the workbenches, which are used for lifting semi-finished product materials for processing by the workbenches.Adjacent conveyors are horizontally connected to transfer the semi-finished product materials.The workbenches receive the parts and materials and the semi-finished product materials to complete processing into semi-finished products, and the semi-finished products are returned to the conveying layer and transferred to the next process.The three-layer structure vertically separates the feeding, assembling and transferring processes, and the layers are flexibly connected, which breaks the rigid series connection limitation of traditional plane production lines, and only the distribution path needs to be adjusted when the type is changed, without the need to stop production and change the layout.A single workbench failure will not stop the entire production line, and the production efficiency and stability are greatly improved.

Description

Technical Field

[0001] This application relates to the field of server technology, and in particular to a three-dimensional server production system and control method. Background Technology

[0002] To meet the needs of various application scenarios such as cloud computing, big data, and artificial intelligence, server products are typically divided into multiple models, with significant differences in hardware configuration, structural design, and manufacturing processes. In actual production, separate production lines are often needed for each model. Traditional server production lines often employ a planar linear layout, with workbenches arranged sequentially along a fixed direction, and products flowing unidirectionally along the assembly line. While this production method is highly efficient for standardized, large-scale production of the same model, it reveals significant shortcomings when facing the need for mixed-model production. Different models have different process routes, requiring separate production lines—one product per dedicated line. When switching production models, the entire line must be shut down, the workbench layout readjusted, and tooling and fixtures replaced and adjusted, resulting in long changeover cycles and high adjustment costs, severely restricting production flexibility and delivery efficiency. Furthermore, in traditional assembly lines, the workbenches and equipment are in a fixed, sequential relationship, with each production step interconnected. If a workbench or a single piece of equipment malfunctions, the fault will propagate along the production line, forcing the entire production line to shut down. Local problems are amplified into global shutdowns, severely impacting overall production efficiency. Summary of the Invention

[0003] This application provides a three-dimensional server production system and control method to at least solve the problems in related technologies where server production lines with a planar layout require the entire production line to be shut down and the equipment layout to be readjusted when switching production models, and where a malfunction of a certain workbench forces the entire production line to shut down.

[0004] This application provides a three-dimensional server production system, including an auxiliary material layer, an equipment layer, and a conveying layer arranged independently downwards in sequence; The equipment layer includes several worktables arranged in an array. Each different process of the production process is equipped with multiple worktables for parallel production of multiple processes. The auxiliary material layer includes several connected connecting conveying devices and lifting trolleys. The connecting conveying devices are correspondingly located between the auxiliary material layer and the worktable. The connecting conveying devices are connected to the lifting trolleys for transmission, and are used to receive and temporarily store the parts and materials conveyed by the lifting trolleys, and then transfer them downwards to the corresponding worktables. The conveying layer includes several lifting conveyors, which are located below the corresponding worktables. They are used to receive semi-finished materials and lift them upwards to the corresponding worktables. Adjacent lifting conveyors are horizontally connected to transport the semi-finished materials to different worktables. The workbench receives the component materials conveyed by the auxiliary material layer and the semi-finished product materials conveyed by the conveying layer, respectively, and processes them according to the corresponding process to form semi-finished products. The semi-finished products fall back to the conveying layer through the corresponding lifting conveyor, and are transferred to the lifting conveyor corresponding to the next process via the adjacent lifting conveyor.

[0005] This application also provides a control method for a server production system, the method being applied to the aforementioned three-dimensional server production system, the control method comprising: The control method includes: Get the number of assemblies completed per unit time for each process in the current production, as well as the number of servers in production and waiting to be produced for each process; Obtain the difference between the number of servers in production and waiting to be produced and the number of assemblies completed per unit time for each process. For the production node with the smallest number of assemblies completed per unit time, when the quantity difference meets the first preset quantity, the production task of the spare workbench is allocated; when the second preset quantity is met, the current process continues to be put into production; when the third preset quantity is met, the production of subsequent orders for this process is restricted; wherein, the third preset quantity is greater than the second preset quantity, and the second preset quantity is greater than the first preset quantity.

[0006] This application achieves a vertical decoupling of material supply, processing and assembly, and process flow by dividing the production area into three independent layers: an auxiliary material layer, an equipment layer, and a conveyor layer. The number of connecting conveyors in the auxiliary material layer and the number of lifting conveyors in the conveyor layer are matched to the number of workbenches. Flexible connections between layers are achieved through lifting trolleys, connecting conveyors, and lifting conveyors, thus breaking the rigid constraints of the traditional planar linear fixed series layout where workbenches are interlocked. Because the workbenches in the equipment layer are arranged in an array, with multiple workbenches configured for each process, different product models can be produced in parallel within the same equipment layer. Switching server models or changing materials does not require line stoppage and adjustments to equipment layout and tooling; only the materials and their delivery paths in the auxiliary material layer and conveyor layer need to be changed, reducing changeover costs and improving production efficiency. Simultaneously, the horizontal connection between adjacent lifting conveyors in the conveyor layer allows semi-finished products to flow flexibly between different workbenches. A failure of a single workbench or lifting conveyor will not cause a complete line stoppage, improving the output stability of the production system. In conjunction with the change management mechanism, real-time processing of production changes at different nodes enables immediate response to production changes, giving the production system the ability to adapt and repair itself. Attached Figure Description

[0007] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 A schematic diagram of a three-dimensional server production system provided in an embodiment of this application; Figure 2 A schematic diagram of a lifting trolley provided in an embodiment of this application; Figure 3 A schematic diagram of a connecting conveying device provided in an embodiment of this application; Figure 4 A schematic diagram of a layered storage area provided in an embodiment of this application; Figure 5 A schematic diagram of a lifting trolley and a connecting conveyor provided in an embodiment of this application; Figure 6 A schematic diagram of a manufacturing process node at the equipment layer provided in an embodiment of this application; Figure 7 A schematic diagram of a lifting conveyor provided in an embodiment of this application; Figure 8 A top view of a transport layer provided in an embodiment of this application; Figure 9 This is a schematic diagram of a lifting conveyor provided in an embodiment of this application; Figure 10 A schematic diagram of an embodiment of the adjustment method provided in this application is shown. Figure 11 This is a schematic diagram of a second embodiment of the adjustment method provided in this application.

[0009] The above figures include the following reference numerals: 100. Auxiliary material layer; 110. Lifting trolley; 111. Conveyor drive wheel; 112. Support structure; 113. First telescopic structure; 114. First chassis; 115. Third horizontal conveyor; 120. Connecting conveyor device; 121. Trolley conveying channel; 122. Layered storage area; 123. Telescopic conveying channel; 124. Second horizontal conveyor; 125. Telescopic transfer vehicle; 1251. Second telescopic structure; 1252. Second chassis; 1253. Fourth horizontal conveyor; 200. Equipment layer; 210. Workbench; 300. Conveying layer; 310. Lifting conveyor; 311. Lifting structure; 312. Base; 313. Drive component; 314. Ball bearing; 315. Lifting protection structure; 320. First horizontal conveyor. Detailed Implementation

[0010] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0011] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. The terms "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where an acceptable deviation range for approximate parallelism can be, for example, within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where an acceptable deviation range for approximate perpendicularity can also be, for example, within 5°. "Equal" includes absolute equality and approximate equality, where an acceptable deviation range for approximate equality can be, for example, a difference between the two equal items being less than or equal to 5% of either one. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0012] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] The embodiments of this application provide a three-dimensional server production system. The device is described in detail in conjunction with the structure and working principle of the production system (the technical terms involved must be explained).

[0014] like Figures 1 to 11 As shown, this application provides a three-dimensional server production system.

[0015] Traditional servers are typically flat production systems, where all processes are performed sequentially or some processes are performed in parallel. In addition to the problems of needing to completely disassemble and rearrange the entire machine when switching production models and the problem of a single point of equipment failure causing the entire line to stop, there are also problems such as unreasonable spatial layout, low equipment utilization, and poor coordination between conveying and material supply.

[0016] like Figures 1 to 3 As shown, the three-dimensional server production system of this application includes an auxiliary material layer 100, an equipment layer 200 and a conveying layer 300 arranged independently downwards in sequence. The auxiliary material layer 100 is located above the equipment layer 200 and the conveying layer 300 is located below the equipment layer 200.

[0017] Equipment layer 200 is the core area for actual processing and assembly. Equipment layer 200 includes several worktables 210 arranged in an array. Each process of each production process is equipped with multiple worktables 210, and the same process of multiple processes can be produced in parallel by multiple worktables 210. That is, the worktable 210 is the processing unit in equipment layer 200 corresponding to each process, and multiple process steps can be executed in parallel.

[0018] The auxiliary material layer 100 includes several connecting conveyor devices 120 and lifting trolleys 110. Each workbench 210 is equipped with one connecting conveyor device 120, and the number of lifting trolleys 110 may or may not match the number of connecting conveyor devices 120. The connecting conveyor devices 120 are correspondingly located between the auxiliary material layer 100 and the workbench 210, and connect with the lifting trolleys 110 for transmission. They are used to receive and temporarily store the parts and materials conveyed by the lifting trolleys 110, and then transfer them downwards to the corresponding workbench 210. The auxiliary material layer 100 is used to store and transfer parts and materials, and supplies them to the equipment layer 200 below through the connecting conveyor devices 120 and the lifting trolleys 110.

[0019] The conveying layer 300 includes several lifting conveyors 310, which are located below corresponding workbenches 210. These conveyors receive semi-finished materials and lift them upwards to the corresponding workbenches 210. Adjacent lifting conveyors 310 are horizontally connected to transport semi-finished materials to different workbenches 210. The workbenches 210 receive component materials from the auxiliary material layer 100 and semi-finished materials from the conveying layer 300, respectively, and process them according to corresponding processes to form semi-finished products. The semi-finished products fall back to the conveying layer 300 via their corresponding lifting conveyors 310 and are then transferred to the next corresponding lifting conveyor 310 via adjacent lifting conveyors 310. The array arrangement of the workbenches 210 can be replaced by a grid arrangement, a circular arrangement, or a grouping arrangement according to the process route, and is not limited to a rectangular array.

[0020] After production starts, the lifting trolley 110 operates in the auxiliary material layer 100, transporting parts and components to the corresponding connecting conveyor 120. The connecting conveyor 120 temporarily stores the materials and then transfers them downwards to the corresponding workbench 210 in the equipment layer 200. Simultaneously, the lifting conveyor 310 below the corresponding workbench 210 in the conveying layer 300 lifts the semi-finished materials returned from the previous process and delivers them to the workbench 210. The workbench 210 simultaneously receives parts and components from the auxiliary material layer 100 and semi-finished materials from the conveying layer 300, processes them according to the corresponding process, and forms new semi-finished products. After processing, the semi-finished products fall back to the conveying layer 300 via the lifting conveyor 310 below the workbench 210, and are then transferred to the lifting conveyor 310 corresponding to the next process via horizontal connection between adjacent lifting conveyors 310. The lifting conveyor 310 then lifts the semi-finished products upwards and delivers them to the workbench 210 of the next process. This cycle continues until all processes are completed.

[0021] The workbenches 210 are no longer connected by a fixed, serial planar assembly line, but rather flexibly connected via horizontal connections of the lifting conveyors 310 in the conveyor layer 300. If a workbench 210, lifting conveyor 310, or connecting conveyor 120 malfunctions, the semi-finished products can be routed to other workbenches 210 in the same process via adjacent lifting conveyors 310, preventing a complete line shutdown. When switching server models, only the delivery path of the lifting trolley 110 in the auxiliary material layer 100 and the transfer target of the connecting conveyor 120 need to be adjusted; no line shutdown is required to adjust equipment layout and tooling. When a Bill of Materials (BOM) change occurs, based on a comparison logic between the production process node where the server assembly is located and the assembly process node where the affected components in the server BOM are located, only the delivery paths of the lifting trolley 110 in the auxiliary material layer 100 and the layered storage area 122 for the parts and materials, as well as the conveying paths of the affected semi-finished products, need to be adjusted, achieving immediate response to production changes without line shutdown.

[0022] This embodiment divides the production area into three independent layers: an auxiliary material layer 100, an equipment layer 200, and a conveying layer 300. This allows for the vertical decoupling of material supply, processing and assembly, and process flow. The number of connecting conveyor devices 120 in the auxiliary material layer 100 and the number of lifting conveyors 310 in the conveying layer 300 are matched with the number of workbenches 210. Flexible connections are achieved between the layers via lifting trolleys 110, connecting conveyor devices 120, and lifting conveyors 310, thus breaking the rigid constraints of the interlocking workbenches in the traditional planar linear fixed series layout. Since the workbenches 210 in the equipment layer 200 are arranged in an array and multiple workbenches 210 are configured for each process, different product models can be produced in parallel in the same equipment layer 200. When switching server models or changing materials, there is no need to stop the line to adjust the equipment layout and tooling; only the materials and their delivery paths in the auxiliary material layer 100 and the conveying layer 300 need to be changed, reducing changeover costs and improving production efficiency. Meanwhile, the horizontal connection and transmission between adjacent lifting conveyors 310 in the conveyor layer 300 allows semi-finished products to flow flexibly between different workbenches 210. A failure of a single workbench 210 or lifting conveyor 310 will not cause a complete line stoppage, improving the output stability of the production system. Combined with a change management mechanism, real-time processing of production changes at different nodes enables immediate response to production changes, giving the production system self-adaptive and self-repairing capabilities.

[0023] Each layer has independent work and maintenance areas, ensuring that people, machines, and materials do not interfere with each other. A height adjustment device 330 is provided between the conveyor layer 300 and the equipment layer 200, which can adjust the height of the conveyor layer 300 to accommodate the size requirements of different server models and subsequent product upgrades.

[0024] Equipment layer 200 is divided into adjacent core and auxiliary areas, with workbenches 210 arranged in a matrix at intervals within each area. The core area is the region within equipment layer 200 used for executing the main production processes. The auxiliary area is the region within equipment layer 200 adjacent to the core area, used for executing auxiliary processes or supplementing the core area's capacity. The auxiliary areas are located on either side of the core area or on its outer perimeter.

[0025] The conveyor layer 300 is divided into a core docking area, an auxiliary docking area, and an outer perimeter area. The core docking area is located directly below the core area, the auxiliary docking area is located directly below the auxiliary area, and the outer perimeter area is located on the outer edges of the core and auxiliary docking areas, forming a three-level conveyor structure that expands progressively from the inside out. Lifting conveyors 310 are installed within the core docking area and / or the auxiliary docking area. Multiple first-level horizontal conveyors 320 are installed within the outer perimeter area, used solely for horizontal connection and transmission.

[0026] This embodiment divides the equipment layer 200 into adjacent core and auxiliary areas, and the conveyor layer 300 into a core docking area, an auxiliary docking area, and a peripheral area, giving the production system functional zoning in the horizontal direction, including a core capacity area, a capacity supplement area, and an external interaction area. The core area bears the main capacity output, while the auxiliary area supplements production when the core area's capacity is insufficient or is used for auxiliary processes. The two areas are connected by lifting conveyors 310 in the conveyor layer 300 to achieve flexible flow of semi-finished products between the core and auxiliary areas. The peripheral area is horizontally connected to the core and auxiliary docking areas through multiple first horizontal conveyors 320. It can transport materials received from the outside to the workbenches 210 in the auxiliary and core areas via the peripheral area, and it can also transport finished products outward via the peripheral area. This gives the system the ability to input materials and output finished products to the external environment without relying on a single-direction material channel.

[0027] like Figures 7 to 9 As shown, the lifting conveyor 310 includes a lifting structure 311, a base 312, a drive component 313, a ball bearing 314, and a lifting protection structure 315.

[0028] The lifting structure 311 is vertically adjustable, with its upper end connected to the base 312. The lifting structure 311 is used to raise and lower the base 312 to horizontally connect with the conveying surface of the worktable 210 for material transfer. The lifting structure 311 can employ a scissor lift mechanism, a hydraulic cylinder lift mechanism, or a screw lift mechanism to move the base 312 vertically up and down. When the top of the base 312 is on the same horizontal plane as the conveying surface of the worktable 210 in the equipment layer 200, it achieves docking and transfer; when they are on different horizontal planes, they achieve separation. Ball bearings 314 are spaced apart and rotatably mounted on the top of the base 312. A drive unit 313 is installed inside the base 312 to drive the ball bearings 314 to roll freely for material transfer. The drive unit 313 consists of rollers arranged at 90-degree angles that can rotate in both directions. Each roller has a built-in weight sensing unit for detecting the load. The base 312 is a flat, rectangular structure located on top of the lifting structure 311. The lifting protection structure 315 is telescopically connected to the base 312 around its perimeter and is used to limit and protect semi-finished materials or semi-finished products. When the lifting protection structure 315 is in the extended state, it extends upward from the perimeter of the base 312 to form a lateral limiting baffle for the material on top of the base 312; when in the retracted state, the lifting protection structure 315 retracts into the base 312 or is close to the side of the base 312, without interfering with the loading and unloading of materials.

[0029] In this embodiment, a lifting structure 311 is set in the lifting conveyor 310 to drive the base 312 to rise and fall vertically, so that the top of the base 312 can be horizontally connected with the conveying surface of the workbench 210. This realizes the vertical transfer of semi-finished materials or processed semi-finished products between the conveying layer 300 and the equipment layer 200. The ball bearings 314 installed at intervals on the top of the base 312 can rotate freely 360 degrees. The driving component 313 drives the ball bearings 314 to roll, thereby driving the semi-finished products to move freely on the surface of the base 312. This makes the conveying of semi-finished products on the base 312 not restricted by a fixed direction. The material can be flexibly transferred in any direction on the surface of the base 312, which improves the conveying flexibility of the material on the lifting conveyor 310.

[0030] Furthermore, the lifting protection structure 315 is retractably connected to the base 312 around its perimeter. During the lifting of the base 312 and material conveying, it extends to limit and protect the semi-finished product, preventing it from slipping off the edge of the base 312 as the balls 314 roll, thus ensuring the safety of materials during vertical transfer. Simultaneously, it retracts after the base 312 returns to the conveying layer 300, without affecting the horizontal connection and transfer between adjacent lifting conveyors 310. This design enables the lifting conveyor 310 to possess three functions: vertical lifting and docking, omnidirectional rolling conveying, and edge limiting protection. While simplifying the structure of a single unit, it ensures the stability and safety of the semi-finished product during vertical transfer.

[0031] The first horizontal conveyor 320 includes the lifting structure 311, base 312, drive component 313 and ball bearing 314 of the aforementioned lifting conveyor 310. Compared with the aforementioned lifting conveyor 310, the first horizontal conveyor 320 does not have a lifting protection structure 315.

[0032] like Figures 2 to 6 As shown, the internal structure of the connecting conveyor 120 includes a trolley conveying channel 121, a layered storage area 122, and a telescopic conveying channel 123 arranged sequentially along the horizontal direction. The layered storage area 122 is vertically divided into multiple storage compartments, each of which is equipped with a second horizontal conveyor 124. The second horizontal conveyor 124 can be a roller conveyor, chain conveyor, belt conveyor, or gravity chute, as long as it can achieve horizontal material transport within the storage compartment. A lifting trolley 110 is mounted vertically within the trolley conveying channel 121 for height adjustment to horizontally connect with the input end of the second horizontal conveyor 124 for transmission. The telescopic conveying channel 123 is equipped with a lifting telescopic conveyor 125 for height adjustment to horizontally connect with the output end of the second horizontal conveyor 124 or the conveying surface of the worktable 210 for transmission.

[0033] In this embodiment, after the lifting trolley 110 delivers the parts and materials into the corresponding storage room, the materials are temporarily stored in the storage room by the second horizontal conveyor 124. They can be stored for a long time when not needed. When needed, the telescopic conveyor 125 takes them out of the storage room, adjusts their height, and delivers them to the corresponding workbench 210. This realizes on-demand retrieval and flexible distribution of materials, avoiding the problem in traditional assembly lines where materials must flow synchronously with the production line and cannot be temporarily stored.

[0034] The lifting trolley 110 includes a conveyor drive wheel 111, a support structure 112, a first telescopic structure 113, a first chassis 114, and a third horizontal conveyor 115.

[0035] The conveyor drive wheel 111 is movable along the guide rail on the upper part of the auxiliary material layer 100. The conveyor drive wheel 111 is rotatably mounted on the top of the support structure 112. The two ends of the first telescopic structure 113 are vertically telescopically connected to the support structure 112 and the first chassis 114, and the third horizontal conveyor 115 is mounted on the first chassis 114. The first telescopic structure 113 is used to adjust the height of the first chassis 114 so that the third horizontal conveyor 115 can be horizontally connected to storage rooms of different heights. The first telescopic structure 113 can be a multi-stage hydraulic cylinder, a ball screw lifting mechanism, a gear and rack lifting mechanism, or a scissor-type telescopic arm, as long as it can realize the vertical extension and retraction of the first chassis 114 relative to the support structure 112.

[0036] The telescopic conveyor 125 includes a second telescopic structure 1251, a second chassis 1252, and a fourth horizontal conveyor 1253. The second telescopic structure 1251 is vertically telescopically connected to the top of the connecting conveyor device 120 and the second chassis 1252. The fourth horizontal conveyor 1253 is mounted on the second chassis 1252. The second telescopic structure 1251 can be replaced by a multi-stage hydraulic cylinder, a screw lifting mechanism, a rack and pinion lifting mechanism, or a scissor-type telescopic arm, as long as it can drive the second chassis 1252 to move vertically relative to the support structure 112.

[0037] The second horizontal conveyor 124, the third horizontal conveyor 115, and the fourth horizontal conveyor 1253 can be the same type of horizontal conveyor. For example, each conveyor includes two spaced-apart rollers and a drive belt, with the drive belt wrapped around the two rollers, and the two rollers can rotate in opposite directions.

[0038] When a server is assembled on a workbench 210 in the equipment layer 200 and a request for the next batch is issued, the conveying layer 300 automatically conveys the next batch of semi-finished materials to the workbench 210. At the same time, the auxiliary material layer 100 automatically delivers the required parts and components to the corresponding connected conveying device 120. The actions of the three are triggered synchronously without any waiting gap.

[0039] When the conveying layer 300 delivers a certain type of semi-finished material to the workbench 210 of the equipment layer 200, it simultaneously sends the component material requirements for the subsequent process of the semi-finished material to the auxiliary material layer 100. The auxiliary material layer 100 completes the temporary storage of component materials in advance, which can realize the simultaneous preparation of semi-finished materials and component materials.

[0040] This embodiment also provides a control method applicable to any of the above-mentioned server production systems, the control method including: Obtain the number of assemblies completed per unit time for each process in the current production process (CAP). k And the number of servers n in each process, both in production and waiting to be produced. CAP k is the number of units that can be assembled in the k-th process per unit time, i.e., the upper limit of the production capacity of this process; n is the total number of servers currently in production and waiting to be produced in the k-th process, i.e., the real-time load of this process.

[0041] Obtain the number of servers n in production and waiting to be produced, and the assembly quantity CAP completed per unit time for each process. k The difference in quantity D = n - CAP k It is used to determine the load status of the process.

[0042] CAP (Assembly Quantity) k The smallest production node is subject to tiered control, and the decision to continue production, restrict subsequent production, or reallocate production tasks is determined based on the quantity difference D. When the quantity difference D meets the first preset quantity, it indicates idle time, and production tasks on spare workbenches need to be allocated. When the quantity difference D meets the second preset quantity, it indicates that the quantity to be assembled is controllable, and the current process can continue to operate normally. When the quantity difference D meets the third preset quantity, it indicates that the quantity to be assembled is too large, limiting the production of subsequent orders for this process. The first preset quantity is less than zero, the second preset quantity is greater than or equal to zero, and the third preset quantity is greater than zero and greater than the second preset quantity. The first, second, and third preset quantities are parameters that take into account the process complexity of different server models and the differences in processing capabilities of production nodes, achieving the CAP of the number of assembly completed per unit time. k Dynamic classification and model adaptation.

[0043] This embodiment calculates the quantity difference D=n-CAP for each process. kBy comparing the data with multiple preset ranges, the production system can automatically make decisions on whether to continue production, limit production, or reassign tasks based on the relationship between the real-time load and capacity limit of each process. When a process is overloaded, subsequent orders are promptly restricted to prevent the entire line from being blocked due to local overload. When there is spare capacity in a process, tasks from other processes are reassigned to avoid idle capacity, achieving a dynamic balance between the capacity utilization rate of each process and the assembly waiting time. This avoids the problem of a complete line stoppage caused by a local failure in a traditional assembly line, significantly improving the fault tolerance of the production system and minimizing the impact of local failures on overall production efficiency.

[0044] Since the calculation of the quantity difference D is directly related to the assembly quantity CAP completed per unit time of each process. k Given the number of servers n in production and waiting for production, and the three decision scenarios corresponding to the three response actions of maintenance, restriction, and allocation, the system determines the number of assemblies (CAP) completed per unit time for a certain process due to a partial failure. k When production declines, the change in the quantity difference D value can automatically trigger a restriction or allocation mechanism to transfer the production tasks of the faulty process to the spare workstations of other normal processes. This achieves fault isolation at the process node level and enables immediate response to production changes without manual intervention, giving the production system self-adaptive and self-repair capabilities. In addition, combined with the aforementioned order priority sorting and production estimated time calculation, this constitutes a complete adaptive production allocation logic system from order access to process execution.

[0045] CAP of the number of assemblies completed per unit time k The number and arrangement of workbenches in each process of the equipment layer are directly related. The number of servers n in production and waiting for production is obtained by counting the number of semi-finished products temporarily stored on each lifting conveyor in the conveying layer and the number of work-in-process products on each workbench. The controller of the production system obtains the above data in real time through communication connections with each actuator in the auxiliary material layer, equipment layer and conveying layer.

[0046] Control methods also include: Receive all production order information, which includes server model, order delivery time, and other information.

[0047] The remaining delivery time t is calculated based on the delivery time of each order and the current time. a And obtain the estimated production time t for each order's corresponding server model. b .

[0048] Calculate the remaining delivery time t a Compared with the estimated production time t b Time difference t a -t b And based on the time difference t a-t b Match the production priority of each order and allocate production resources for production according to the priority from high to low, that is, the higher the priority of the order, the more likely it is to be produced. The order priority is related to the time difference t. a -t b They are negatively correlated, and the difference t a -t b The smaller the value, the higher the order's production priority. This is based on the time difference t. a -t b The matching production sorting level k, k=0, 1, 2, 3, 4..., the smaller the number, the higher the priority.

[0049] Obtain the estimated production time for each server model corresponding to each order, including: Obtain the time taken for each step in the manufacturing process of the target server model. This includes obtaining the material transfer time (t) for each step. 运输 Assembly time (t) 组装 Waiting time t at the workbench 等待 The time for each process is then summed to obtain the total time. This includes the material transfer time t. 运输 The transfer time for conveying parts and materials from the auxiliary material layer to the workbench, and the transfer time for conveying semi-finished products from the conveyor layer to the workbench, and the assembly time of the process (t). 组装 The time required for the workbench to assemble semi-finished materials and component materials. Workbench waiting time t. 等待 This refers to the waiting time caused by assembling other machines on the workbench.

[0050] The estimated production time t for the target server model is obtained by summing the time taken for each step in the manufacturing process. b .

[0051] This embodiment calculates the remaining delivery time t. a Compared with the estimated production time t b Time difference t a -t b Based on this, the order scheduling priority k is matched, enabling the production system to automatically sort production based on the urgency of the orders, with a time difference t. a -t b The smaller the value, the more urgent the delivery. The smaller the matching priority k value, the higher the production priority. Based on this, the system prioritizes the scheduling of material transportation and assembly resources for urgent orders, thus avoiding the problem of delayed delivery of urgent orders due to their lower priority.

[0052] Due to the estimated production time t b It is obtained by adding up the time taken for each individual process, and the time taken for each individual process already includes the material transfer time t. 运输 Assembly time (t) 组装Waiting time t at the workbench 等待 The material transfer time t in the process 运输 This includes the material transfer time for both the auxiliary material layer and the conveyor layer, making the estimated production time t b The calculation fully reflects the actual time required for materials to flow between the three layers in the three-dimensional production system. The basis for matching production scheduling priorities is more in line with the actual capacity of the system, reducing scheduling errors caused by prediction deviations and enabling the orderly production of mixed lines with multiple models and orders.

[0053] Obtain the material transfer time t of the process. 运输 This includes: obtaining the transfer time of the conveyor layer to transport the semi-finished product of the previous process to the workbench and the transfer time of the auxiliary material layer to transport the component material to the workbench, and obtaining the process material transfer time to complete all transfers based on the transfer time of the conveyor layer to transport the semi-finished product of the previous process to the workbench and the transfer time of the auxiliary material layer to transport the component material to the workbench.

[0054] Obtain the assembly time t of the process. 组装 This includes: obtaining the average statistical assembly time t for materials installed in the corresponding process. 预设组装 Correction coefficient α for workbench operation status i Adjustment coefficient β for process proficiency i The assembly time for each process is then calculated based on this. The workbench operation status correction coefficient α is included. i包括 When the worktable is running normally, the worktable operation status correction coefficient α i The first preset value is used; when the worktable slows down due to a malfunction, the worktable operating status correction coefficient α is used. i The second preset value; when the workbench is stopped for maintenance, the workbench operating status correction coefficient α. i The third preset value is greater than the second preset value, and the second preset value is greater than the first preset value.

[0055] Obtain the waiting time t of the workbench 等待 This includes: obtaining the waiting time t caused by assembling other servers on the workbench. 预设等待 and material distribution correction factor γ i This is used to determine the workbench waiting time. The material delivery correction coefficient γ is included. i包括 When materials are supplied in a timely manner, the material distribution correction factor γ i The fourth preset value is used; when material delivery is delayed, the material delivery correction coefficient is the fifth preset value, which is greater than the fourth preset value.

[0056] Specifically, the assembly time for each process is t. 组装 For α i ·β i ·t 预设组装Workbench waiting time t 等待 For γ i ·t 预设等待 , where t 预设组装 The preset value is the average statistical assembly time for installing materials in this process; the t 预设等待 This is a preset value, representing the waiting time caused by assembling other servers on the workbench.

[0057] Estimated production time t for a single server b The calculation formula is as follows:

[0058] m is the number of process nodes in the production breakdown of this server model. The sum of the time taken for all process nodes is the estimated production time.

[0059] The t 预设等待 The calculation formula is:

[0060] t 预设等待 This represents the cumulative assembly time for the workbench under the current sorting priority k; when scheduling priority k=0, there are no preceding high-priority orders, t 预设等待 When the production priority k=1, t is 0; 预设等待 This represents the average assembly time for priority 0 orders at this workstation; when scheduling priority k=2, t 预设等待 This is the sum of the average assembly times for priority 0 and priority 1 orders at this workbench, with higher priority values ​​added up accordingly.

[0061] The production order is determined based on the order scheduling priority, with the order with the highest scheduling priority being scheduled first. The complete production process for the corresponding model of the order is broken down, and the available idle workbenches for each process are matched in turn. If the number of idle workbenches can meet the capacity requirements, the corresponding number of workbenches are directly switched to the process. If the number of idle workbenches is insufficient, workbenches that are compatible with the process under other processes are searched. If compatible workbenches exist, some workbenches are switched to the current process.

[0062] α i Correction coefficients are applied to different workbench operating states (e.g., the first preset value is 1, and the second preset value is 1.2). 1.5, the third preset value tends towards infinity.

[0063] β i A correction factor is applied to the proficiency level of different process nodes, and its calculation formula is β. i =t 参考 / t 预设组装 , t 参考This is derived from the average statistical time taken to complete corresponding process node components manually or by machine on a regular basis. γ i This is a material delivery correction factor (e.g., the fourth preset value is 1, and the fifth preset value is 1.1-1.5).

[0064] When the quantity difference D meets the first preset quantity, the production tasks for allocating spare workbenches include: Search for available workbenches within the production system. If an available workbench is found that supports the current process, the workbench is switched to the current process to undertake the production task. The connecting conveyor and telescopic conveyor of the auxiliary material layer deliver parts and materials to the available workbench, and the lifting conveyor of the conveyor layer delivers semi-finished materials to the available workbench. The available workbench then begins to perform the processing of the current process.

[0065] If no available workbench is available for the current process step, other process workbenches with the same general process capabilities will be searched, and part of the current process's production tasks will be reassigned to these other process workbenches for processing. The auxiliary material layer and conveyor layer will simultaneously deliver the corresponding materials to other process workbenches, and these other process workbenches will execute the reassigned processing tasks.

[0066] This embodiment first searches for and directly allocates idle workbenches of the same process when the quantity difference D meets the first preset quantity. If there are no idle workbenches of the same process, it then searches for and allocates idle workbenches of other processes with the same general process capability. This allows the production system to make full use of idle resources when there is spare capacity in a certain process. Idle workbenches of the same process can directly undertake production tasks without additional adaptation, while idle workbenches of other processes with general process capability can undertake part of the processing content through cross-process allocation. This avoids the problem of idle capacity due to insufficient idle workbenches of a single process and improves the overall workbench utilization rate of the system.

[0067] The flexible connection of process nodes in the production system avoids the idle workbench caused by process differences. Multiple models of servers can share common process node workbench, greatly improving the overall utilization rate of the workbench.

[0068] Because the allocation process is automatically retrieved and decided by the control unit, there is no need for manual judgment and allocation. The allocation response speed is fast, enabling the production system to automatically complete task rebalancing when faced with uneven loads in local processes.

[0069] The control method further includes: When parts or materials are replaced on the production line, identify all work-in-process (WIP) semi-finished products and compare the current process node of each WIP semi-finished product with the assembly node of the changed material: When the current process node of the first work-in-process semi-finished product is upstream of the changed material assembly node, the first work-in-process semi-finished product is not affected by the change and continues to be produced normally according to the original process.

[0070] When the current process node of the second work-in-process semi-finished product is the material change assembly node, the lifting trolley of the auxiliary material layer delivers replacement new parts to the corresponding workbench, and simultaneously collects the remaining old parts on the workbench and transports them back to the warehouse. The workbench processing is uninterrupted, and then the new parts are assembled.

[0071] When the current process node of the third work-in-process semi-finished product is located downstream of the material change assembly node, after the third work-in-process semi-finished product completes the current process, it is transferred from the conveyor layer to the dedicated heavy industry workbench to replace the parts and materials. After the replacement is completed, it is sent back to the original process node to continue processing.

[0072] When a component or material replacement occurs on the production line in this embodiment, it is not necessary to shut down the entire line for manual screening and control. Instead, the affected production orders will be monitored and processed in real time. The production change processing mechanism at different nodes allows production adjustments such as component or material replacements to be made without a complete shutdown. The first work-in-process semi-finished product before the change node continues to be produced without being affected. The second work-in-process semi-finished product at the change node achieves seamless material switching. The third work-in-process semi-finished product after the change node continues to be produced after being processed at the rework node. This significantly shortens the change processing time, reduces manual screening costs, and ensures order delivery cycles.

[0073] For example, the complete process sequence for a server is as follows: Workbench A2 (chassis assembly) → Workbench A3 (hard drive assembly, change of material assembly node) → Workbench B3 (power supply assembly) → Workbench C4 (complete machine testing).

[0074] Issue a change order: Change the hard drive from material A to material B.

[0075] There is a work-in-process (WIP) unit currently at workbench A2 (chassis assembly). The process at workbench A2 precedes the process at workbench A3 (hard drive assembly), making it an upstream change node. Therefore, the WIP unit at workbench A2 is the first WIP unit. This WIP unit has not yet undergone hard drive assembly. When it reaches workbench A3, it can be directly assembled using new material B without rework or relocation. It will flow normally down the production line without affecting overall production. The WIP unit at workbench A3 is the second WIP unit, and the WIP units at workbench B3 and workbench C4 are the third WIP units.

[0076] In a multi-model co-production process, if the quantity of model A to be processed in the corresponding process exceeds the worktable capacity CAP kIf there are idle workbenches for model B, the idle workbench will be switched to take over the processing tasks of model A; when a single workbench fails and stops, the production tasks corresponding to the failed workbench will be transferred to an idle workbench to achieve single-point fault isolation; after the failed workbench is repaired, the system will adjust the production tasks based on the capacity CAP of each workbench. k Tasks for each process were redistributed from small to large, and the normal production schedule was restored.

[0077] The following will introduce two specific allocation methods.

[0078] Example 1: Emergency Production Switching Case of Dual-Model Servers Working on the Same Line like Figure 10 As shown, the original two independent production lines, X and Y, produced corresponding models respectively. The delivery deadline for order Y was temporarily brought forward, requiring the diversion of some production capacity from X to supply Y. Simultaneously, it's crucial to ensure that X's basic production capacity remains unaffected and to prevent a single point of failure from causing a complete line shutdown. Traditional production lines require a complete shutdown and modification to switch models. This solution utilizes a flexible conveyor system to quickly complete the conversion, without requiring any changes to the physical positions of the workbenches or any shutdown modifications.

[0079] Equipment layers A3, B4, and C3 are dedicated workbenches for X, while A2, B3, and C4 are dedicated workbenches for Y. The hardware positions remain unchanged. Only the workbench number association logic is modified through the global conveying system of the conveyor layer to switch A3 and C3 to workbenches shared by X and Y, and splice them with the original Y workbench to form a complete processing link.

[0080] The lifting trolley of the auxiliary material layer adjusts the delivery strategy to meet the needs of production conversion, and delivers parts and materials to the newly added Y workbench A3 and C3 in advance and temporarily stores them in the connecting conveyor between the layers to eliminate waiting time; the track transports X and Y types of parts and materials in sections, while ensuring the supply of materials to the original X workbench at the same time, and the two types of material transport do not interfere with each other.

[0081] The conveyor layer consists of independent conveyor channels X and Y that do not compete with each other. Semi-finished products in X are transferred along A1→B1→C1, while semi-finished products in Y are transferred along A2 / A3→B3→C3 / C4. The conveyor unit distinguishes the machine model by weight recognition and automatically matches the corresponding conveyor path.

[0082] During the production switchover, the Y-dedicated workbench B3 was found to have a fault and stopped. The system calculated that the difference in the number of workbench D met the first preset quantity, and immediately diverted the semi-finished products to be processed to the idle standby workbench B2. The process of switching workbench is compatible with Y model processing. The fault diversion can be completed by only changing the conveyor path instruction, without a complete production stoppage, effectively reducing the production capacity loss during maintenance.

[0083] This production conversion does not require equipment disassembly and assembly or wiring reconstruction, which greatly saves transformation cost and man-hours, and successfully meets the delivery requirements of Order Y; a single point of failure only causes local impacts, and both the mixed-line assembly efficiency of X and Y and the timeliness of auxiliary material distribution are superior to the traditional separate-line production mode.

[0084] Example 2: Real-time disposal case of mixed-line production of three models of servers and material change As shown in Figure 11 , the production line synchronously processes three models of servers L, M and N. During production, the matching hard disk material X for L and M has quality defects, which needs to be completely replaced with material Y. It is required to complete the change without stopping the whole production line, while avoiding production disorder and efficiency decline caused by mixed-line production of multiple models. The solution relies on a three-dimensional layered architecture and a flexible conveying system, which simultaneously realizes mixed-line production of multiple models and rapid disposal of material changes.

[0085] In the equipment layer, the positions of workbenches are fixed. General processes such as chassis assembly and power supply installation are provided with shared workbenches A2, B3, and C4; differentiated processes such as storage array and computing module assembly are respectively provided with exclusive workbenches A3 (for L), D4 (for M), and B2 (for N). The conveying layer automatically allocates conveying paths according to the identification of semi-finished product models, and establishes independent process links for the three models respectively: the production process of Model L is A2→A3→B3→C4, the production process of Model M is A2→B3→C4→D4, and the production process of Model N is A2→B2→B3→B4, which does not require re-wiring for each model separately.

[0086] After receiving the material replacement instruction, the system locks the affected work-in-progress L and M, and the corresponding change workbenches are hard disk assembly workbenches A3 and B3, and disposes of them in sections according to the processes where the work-in-progress is located: when the semi-finished product is exactly at workbenches A3 and B3, the lifting trolley stops supplying old material X, and simultaneously delivers new material Y to be temporarily stored in the inter-layer connecting conveying device, the remaining old materials are uniformly recycled to the warehouse, and the production of the workbench is not interrupted; if the semi-finished product has completed the hard disk process and flowed to the downstream workbench, it will be transferred to a special rework workbench for material replacement after processing, and then returned to the original process to continue production, and the rework operation does not interfere with the normal production of other workbenches and Model N.

[0087] The system calculates the CAP of each workbench in real time k acity and assembly quantity. In this case, the load of workbench A3 for Model L is in a normal buffer range, and workbench C4 for Model M has idle capacity. The system automatically diverts some semi-finished products of Model L to workbench C4, and the process switching of the workbench is compatible with the storage assembly process of Model L, which fully activates idle workbenches and significantly improves the overall equipment utilization rate.

[0088] The above provides a detailed description of a three-dimensional server production system and control method provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A three-dimensional server production system, characterized in that, It includes an auxiliary material layer, an equipment layer, and a conveyor layer that are arranged independently downwards; The equipment layer includes several worktables arranged in an array. Each different process of the production process is equipped with multiple worktables for parallel production of multiple processes. The auxiliary material layer includes several connected connecting conveying devices and lifting trolleys. The connecting conveying devices are correspondingly located between the auxiliary material layer and the worktable. The connecting conveying devices are connected to the lifting trolleys for transmission, and are used to receive and temporarily store the parts and materials conveyed by the lifting trolleys, and then transfer them downwards to the corresponding worktables. The conveying layer includes several lifting conveyors, which are located below the corresponding worktables. They are used to receive semi-finished materials and lift them upwards to the corresponding worktables. Adjacent lifting conveyors are horizontally connected to transport the semi-finished materials to different worktables. The workbench receives the component materials conveyed by the auxiliary material layer and the semi-finished product materials conveyed by the conveying layer, respectively, and processes them according to the corresponding process to form semi-finished products. The semi-finished products fall back to the conveying layer through the corresponding lifting conveyor, and are transferred to the lifting conveyor corresponding to the next process via the adjacent lifting conveyor. The lifting conveyor includes a lifting structure, a base, a drive component, ball bearings, and a lifting protection structure. The lifting structure is vertically adjustable and connected to the base at its upper end, used to drive the base to rise and fall to horizontally align with the conveying surface of the workbench for transmission. The ball bearings are spaced apart and rotatably mounted on the top of the base. The drive component is installed inside the base and used to drive the ball bearings to roll freely to convey semi-finished materials. The lifting protection structure is retractably and movably connected to the perimeter of the base for limiting and protecting the semi-finished materials. The internal structure of the connecting conveyor includes a trolley conveying channel, a layered storage area, and a telescopic conveying channel arranged sequentially along the horizontal direction; the layered storage area is divided into multiple storage rooms along the vertical direction, and a second horizontal conveyor is installed in each storage room; the lifting trolley is mounted vertically within the trolley conveying channel for adjustment to horizontally connect with the input end of the second horizontal conveyor for transmission; the telescopic conveying channel is equipped with a vertically adjustable telescopic conveyor car for adjustment to horizontally connect with the output end of the second horizontal conveyor or the conveying surface of the workbench for transmission. The lifting trolley includes a conveying drive wheel, a support structure, a first telescopic structure, a first chassis, and a third horizontal conveyor; the conveying drive wheel can be moved along the guide rail on the upper part of the auxiliary material layer, the conveying drive wheel is rotatably mounted on the top of the support structure, the two ends of the first telescopic structure are vertically telescopically connected to the support structure and the first chassis, and the third horizontal conveyor is disposed on the first chassis; The telescopic conveyor includes a second telescopic structure, a second chassis, and a fourth horizontal conveyor; the second telescopic structure is vertically telescopically connected to the top of the connecting conveyor and the second chassis, and the fourth horizontal conveyor is mounted on the second chassis; A height adjustment device is provided between the conveyor layer and the equipment layer, which can realize the height adjustment of the conveyor layer to adapt to the size requirements of different models of server production and subsequent product upgrades.

2. The three-dimensional server production system according to claim 1, characterized in that, The equipment layer is divided into an adjacent core area and an auxiliary area, and the workbenches are arranged in a matrix at intervals within the core area and the auxiliary area; The conveying layer is divided into a core docking area, an auxiliary docking area, and an outer area. The core docking area and the auxiliary docking area are located directly below the core area and the auxiliary area, respectively. The lifting conveyor is installed in the core docking area and / or the auxiliary docking area. The outer area is located on the outer periphery of the core docking area and the auxiliary docking area. Multiple first horizontal conveyors are installed in the outer area.

3. A control method for a server production system, said control method being applied to the three-dimensional server production system according to any one of claims 1-2, characterized in that, The control method includes: Get the number of assemblies completed per unit time for each process in the current production, as well as the number of servers in production and waiting to be produced for each process; Obtain the difference between the number of servers in production and waiting to be produced and the number of assemblies completed per unit time for each process. For the production node with the smallest number of assemblies completed per unit time, when the quantity difference meets the first preset quantity, the production task of the spare workbench is allocated; when the second preset quantity is met, the current process continues to be put into production; when the third preset quantity is met, the production of subsequent orders for this process is restricted; wherein, the third preset quantity is greater than the second preset quantity, and the second preset quantity is greater than the first preset quantity.

4. The control method according to claim 3, characterized in that, The control method further includes: Receive all production order information, calculate the remaining delivery time based on the delivery time of each order and the current time, and obtain the estimated production time for the server model corresponding to each order; Calculate the time difference between the remaining delivery time and the estimated production time, and match the production priority of each order according to the time difference. Then, allocate production resources for production according to the production priority from high to low. Among them, production scheduling priority is negatively correlated with time difference.

5. The control method according to claim 4, characterized in that, Obtain the estimated production time for each server model corresponding to each order, including: Obtain the time for each process step in the production process of the target model server; wherein, obtaining the time for each process step includes: obtaining the material transfer time, process assembly time and workbench waiting time for the corresponding process step and summing them up to obtain the process time; The estimated production time for the target model server is obtained by summing the time taken for each step in the manufacturing process.

6. The control method according to claim 5, characterized in that, The process material transfer time, process assembly time, and workbench waiting time are obtained, including: The transfer time of the conveyor layer to transport the semi-finished product of the previous process to the workbench and the transfer time of the auxiliary material layer to transport the component material to the workbench are obtained. Based on the transfer time of the conveyor layer to transport the semi-finished product of the previous process to the workbench and the transfer time of the auxiliary material layer to transport the component material to the workbench, the process material transfer time to complete all transfers is obtained. The system obtains the average statistical assembly time of materials installed in the corresponding process, the workbench operation status correction coefficient, and the process proficiency adaptation correction coefficient, and then calculates the process assembly time based on these parameters. The workbench operation status correction coefficient is obtained as follows: when the workbench is running normally, the workbench operation status correction coefficient is a first preset value; when the workbench malfunctions and slows down, the workbench operation status correction coefficient is a second preset value; when the workbench is stopped for maintenance, the workbench operation status correction coefficient is a third preset value, where the third preset value is greater than the second preset value, and the second preset value is greater than the first preset value. The waiting time and material delivery correction coefficient caused by assembling other servers on the workbench are obtained, and the workbench waiting time is obtained based on the waiting time and material delivery correction coefficient caused by assembling other servers on the workbench. Among them, the material delivery correction coefficient is obtained as follows: when the material is supplied in time, the material delivery correction coefficient is the fourth preset value; when the material delivery is delayed, the material delivery correction coefficient is the fifth preset value, and the fifth preset value is greater than the fourth preset value.

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