A planning method and device for digital design of discrete processes

Abstract

The present invention discloses a planning method for digital design of discrete processes, the method comprising: a process planning server receives a first demand work order for a first workpiece; the process planning server determines whether the inventory quantity of the first workpiece is lower than a threshold quantity of the workpiece; if the process planning server determines that the inventory quantity of the first workpiece is higher than the threshold quantity of the workpiece, the process planning server provides the first workpiece to the production line that initiates the first demand work order; if the process planning server determines that the inventory quantity of the first workpiece is lower than or equal to the threshold quantity of the workpiece, the process planning server determines whether the first process can be skipped based on a second process and a third process; if the process planning server determines that the first process cannot be skipped based on the second process and the third process, the process planning server provides the first workpiece to the production line that initiates the first demand work order.

Description

Technical Field

[0001] The present invention relates to the field of digital production technology, and in particular to a planning method and device for discrete process digital design. Background Art

[0002] With the vigorous development of the national economy, the boiler manufacturing industry has made great progress. With the help of advanced technologies such as the Internet of Things, cloud computing, big data, and mobile Internet, boiler industry companies have gradually formed a new industrial form that integrates manufacturing and services while improving and ensuring product high quality.

[0003] Discrete manufacturing refers to a production method that converts continuous substances into discrete products. This method breaks down the production process into a series of discrete steps, and each step is usually calculable. In an application scenario, a boiler manufacturing factory can split some continuous production lines into multiple lines to achieve a discrete process flow. For example, in a specific scenario, a traditional assembly line from parts to complete machines can be split into 5-6 different assembly lines. Some assembly lines can even be delegated to branch factories or sub-factories for production. Each assembly line produces independently, and finally the products of these assembly lines are assembled into finished products. Summary of the invention

[0004] To achieve the above object, the present invention provides a planning method for discrete process digital design, the method comprising:

[0005] A first demand work order for a first workpiece is received by a process planning server, wherein the first demand work order includes a first process using the first workpiece, and the first demand work order also includes a second process before the first process and a third process after the first process;

[0006] The process planning server determines whether the inventory quantity of the first workpiece is lower than a threshold quantity of the workpiece;

[0007] If the process planning server determines that the inventory quantity of the first workpiece is higher than the workpiece threshold quantity, the process planning server provides the first workpiece to the production line that initiates the first demand work order;

[0008] If the process planning server determines that the inventory quantity of the first workpiece is lower than or equal to the workpiece threshold quantity, the process planning server determines whether the first process can be skipped based on the second process and the third process;

[0009] If the process planning server determines that the first process cannot be skipped based on the second process and the third process, the process planning server provides the first workpiece to the production line that initiates the first demand work order.

[0010] In a preferred embodiment, the method further comprises:

[0011] When the process planning server receives the first demand work order for the first workpiece, the process planning server receives a second demand work order for the first workpiece, wherein the second demand work order includes a fourth process using the first workpiece, and the second demand work order also includes a fifth process before the fourth process and a sixth process after the fourth process;

[0012] The process planning server determines whether the fourth process can be skipped based on the fifth process and the sixth process;

[0013] If the process planning server determines that the fourth process cannot be skipped based on the fifth and sixth processes, and if the process planning server determines that the first process can be skipped based on the second and third processes, the process planning server provides the first workpiece to the production line that initiates the second demand work order.

[0014] In a preferred embodiment, the method further comprises:

[0015] If the process planning server receives the first demand work order for the first workpiece and does not receive other demand work orders for the first workpiece, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server determines the total number of processes that require the first workpiece and cannot be skipped within a predetermined time, wherein the predetermined time is determined based on at least a next delivery time of the first workpiece;

[0016] Determining, by the process planning server, whether the total number is less than the inventory quantity of the first workpiece;

[0017] If the process planning server determines that the total number is lower than the inventory quantity of the first workpiece, the process planning server provides the first workpiece to the production line that initiated the first demand work order;

[0018] If the process planning server determines that the total is equal to or higher than the inventory quantity of the first workpiece, the process planning server temporarily does not provide the first workpiece to the production line that initiates the first demand work order.

[0019] In a preferred embodiment, the threshold number of workpieces is determined by the following steps:

[0020] The process planning server determines the total demand for the first workpiece from the current time to the next delivery time of the first workpiece based on the production schedule;

[0021] The process planning server determines a threshold quantity of workpieces based on the total demand quantity, wherein the threshold quantity of workpieces is greater than the total demand quantity.

[0022] In a preferred embodiment, the method further comprises:

[0023] At the same time as the process planning server receives the first demand work order for the first workpiece, the process planning server receives a third demand work order for the first workpiece, wherein the third demand work order includes a seventh process using the first workpiece, and the third demand work order also includes an eighth process before the seventh process and a ninth process after the seventh process;

[0024] The process planning server determines whether the seventh process can be skipped based on the eighth process and the ninth process;

[0025] If the process planning server determines that the seventh process can be skipped based on the eighth process and the ninth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server continues to determine whether the inventory quantity of the first workpiece will be lower than the workpiece threshold quantity after providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand;

[0026] If the process planning server determines that providing the first workpiece to the production line initiating the first demand and the production line initiating the third demand will cause the inventory quantity of the first workpiece to be lower than the threshold quantity of the workpiece, the process planning server continues to determine the first loss time of the production line initiating the first demand due to the lack of the first workpiece and the second loss time of the production line initiating the third demand due to the lack of the first workpiece;

[0027] The process planning server provides the first workpiece to the production line that initiates the first demand or the production line that initiates the third demand based on the first loss time and the second loss time.

[0028] The present invention also provides a planning device for discrete process digital design, the device comprising a module for performing the following operations:

[0029] A first demand work order for a first workpiece is received by a process planning server, wherein the first demand work order includes a first process using the first workpiece, and the first demand work order also includes a second process before the first process and a third process after the first process;

[0030] The process planning server determines whether the inventory quantity of the first workpiece is lower than a threshold quantity of the workpiece;

[0031] If the process planning server determines that the inventory quantity of the first workpiece is higher than the workpiece threshold quantity, the process planning server provides the first workpiece to the production line of the first demand work order;

[0032] If the process planning server determines that the inventory quantity of the first workpiece is lower than or equal to the workpiece threshold quantity, the process planning server determines whether the first process can be skipped based on the second process and the third process;

[0033] If the process planning server determines that the first process cannot be skipped based on the second process and the third process, the process planning server provides the first workpiece to the production line that initiates the first demand work order.

[0034] In a preferred embodiment, the device further comprises a module for performing the following operations:

[0035] When the process planning server receives the first demand work order for the first workpiece, the process planning server receives a second demand work order for the first workpiece, wherein the second demand work order includes a fourth process using the first workpiece, and the second demand work order also includes a fifth process before the fourth process and a sixth process after the fourth process;

[0036] The process planning server determines whether the fourth process can be skipped based on the fifth process and the sixth process;

[0037] If the process planning server determines that the fourth process cannot be skipped based on the fifth and sixth processes, and if the process planning server determines that the first process can be skipped based on the second and third processes, the process planning server provides the first workpiece to the production line that initiates the second demand work order.

[0038] In a preferred embodiment, the device further comprises a module for performing the following operations:

[0039] If the process planning server receives the first demand work order for the first workpiece and does not receive other demand work orders for the first workpiece, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server determines the total number of processes that require the first workpiece and cannot be skipped within a predetermined time, wherein the predetermined time is determined based on at least a next delivery time of the first workpiece;

[0040] Determining, by the process planning server, whether the total number is less than the inventory quantity of the first workpiece;

[0041] If the process planning server determines that the total number is lower than the inventory quantity of the first workpiece, the process planning server provides the first workpiece to the production line that initiated the first demand work order;

[0042] If the process planning server determines that the total is equal to or higher than the inventory quantity of the first workpiece, the process planning server temporarily does not provide the first workpiece to the production line that initiates the first demand work order.

[0043] In a preferred embodiment, the threshold number of workpieces is determined by the following steps:

[0044] The process planning server determines the total demand for the first workpiece from the current time to the next delivery time of the first workpiece based on the production schedule;

[0045] The process planning server determines a threshold quantity of workpieces based on the total demand quantity, wherein the threshold quantity of workpieces is greater than the total demand quantity.

[0046] In a preferred embodiment, the device further comprises a module for performing the following operations:

[0047] At the same time as the process planning server receives the first demand work order for the first workpiece, the process planning server receives a third demand work order for the first workpiece, wherein the third demand work order includes a seventh process using the first workpiece, and the third demand work order also includes an eighth process before the seventh process and a ninth process after the seventh process;

[0048] The process planning server determines whether the seventh process can be skipped based on the eighth process and the ninth process;

[0049] If the process planning server determines that the seventh process can be skipped based on the eighth process and the ninth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server continues to determine whether the inventory quantity of the first workpiece will be lower than the workpiece threshold quantity after providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand;

[0050] If the process planning server determines that providing the first workpiece to the production line initiating the first demand and the production line initiating the third demand will cause the inventory quantity of the first workpiece to be lower than the threshold quantity of the workpiece, the process planning server continues to determine the first loss time of the production line initiating the first demand due to the lack of the first workpiece and the second loss time of the production line initiating the third demand due to the lack of the first workpiece;

[0051] The process planning server provides the first workpiece to the production line that initiates the first demand or the production line that initiates the third demand based on the first loss time and the second loss time.

[0052] Compared with the prior art, the present invention has the following advantages:

[0053] In current discrete process related systems, when the number of workpieces is insufficient and the workpiece is being produced, it is impossible to ensure that the demand for the workpiece is prioritized for the process that requires the workpiece and cannot be skipped. The present invention proposes a corresponding method to meet the needs of discrete processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of the system architecture of an embodiment of the present invention.

[0055] Figure 2 It is a method flow chart of one embodiment of the present invention. DETAILED DESCRIPTION

[0056] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0057] At present, in the process of discrete process execution in our factory, the following problems are found: the traditional large-scale assembly line usually stops working in a certain process because the next process needs to wait for the product of the previous process, so the original large-scale assembly line is divided into multiple smaller assembly lines, and multiple identical assembly lines are configured for some slow production processes, and a small number of assembly lines are configured for some slow production processes. This improvement obviously improves production efficiency. However, in the actual operation process, our factory found that there is still room for improving the efficiency of the entire discrete process, as follows: the discrete process currently executed by our factory is still the traditional "from front to back" linear processing method. In short, the production process of each production line must be strictly executed from the first process to the last process in sequence, and no process is allowed to be skipped in the middle; on the other hand, the demand for workpieces of each production line is also met according to the principle of from front to back, that is, the production line that requests the workpiece first gets the workpiece first, and the production line that requests the workpiece later gets the workpiece later. After careful research by our factory, we found that this operation wastes a lot of time. From a technical point of view, since discrete processes have been adopted, some processes can be skipped. A typical example is that in the manufacturing and assembly process of a certain type of boiler, the gas supply pipe processing and the gas chamber processing can be completed first, and then the gas supply pipe and the gas chamber are connected together through a high temperature and high pressure resistant valve. Therefore, compared with the process of first connecting the gas supply pipe to the valve, and then connecting the valve to a part of the gas chamber, and then starting the gas chamber processing, the process of connecting the gas supply pipe to the valve can be skipped. Therefore, the demand work order for the valve can be delayed, and this delayed processing does not delay the production progress for the production line. For the manufacturing and assembly process of another type of boiler, it is necessary to first connect the gas supply pipe to the valve, then connect the valve to a part of the gas chamber, and then process other structures of the combustion chamber (this is because of the special design of some types of boilers in the design process, which requires the gas supply pipe to be connected to the valve first, and then the valve to a part of the gas chamber to ensure sealing). When the number of workpieces is insufficient and the workpiece is being produced, it is obviously more conducive to improving production efficiency to give priority to ensuring the demand for the workpiece in the process that requires the workpiece and cannot be skipped. However, the prior art lacks a corresponding method, so the present invention proposes a corresponding method to meet the needs of discrete processes.

[0058] Example 1

[0059] Figure 1 Schematic diagram of the system architecture of an embodiment of the present invention. As shown in the figure, in the present invention, the system includes a process planning server and multiple production lines, wherein Figure 1Three production lines are shown as examples, but it can be understood by those skilled in the art that a process planning server can coordinate more production lines. Among them, the process planning server can be a computer or server with corresponding computing power, and the computer or server runs software compiled based on the steps of the present invention. Of course, it can be understood that the process planning server also needs to run other software to coordinate the production operation of each production line, and the software compiled based on the method of the present invention only solves the technical problems raised by the present invention. The method of writing software is a well-known method in the art, and the present invention will not be repeated here.

[0060] Example 2

[0061] Figure 2 1 is a method flow chart of an embodiment of the present invention. As shown in the figure, the method of the present invention comprises the following steps:

[0062] Step 1: The process planning server receives a first demand work order for a first workpiece, wherein the first demand work order includes a first process using the first workpiece, and the first demand work order also includes a second process before the first process and a third process after the first process; in an example, the first process may be a process of connecting a valve of a boiler of a certain model (hereinafter referred to as model A) to a gas supply pipeline, the second process may be a process of processing a gas pipeline, and the third process may be a process of processing a gas chamber;

[0063] Step 2: The process planning server determines whether the inventory quantity of the first workpiece is lower than the workpiece threshold quantity;

[0064] Step 3: If the process planning server determines that the inventory quantity of the first workpiece is higher than the workpiece threshold quantity, the process planning server provides the first workpiece to the production line that initiates the first demand work order; it should be understood that, continuing with the above example, the production line that initiates the first demand work order is the production line that is about to perform the first to third processes. Of course, the work order can be automatically generated by a computer at the production line, or can be manually filled in by a worker;

[0065] Step 4: If the process planning server determines that the inventory quantity of the first workpiece is less than or equal to the workpiece threshold quantity, the process planning server determines whether the first process can be skipped based on the second process and the third process; since the process planning server records the production processes of all models of products (in our factory product sequence, the products are generally boilers, so this article takes boilers as an example, but the method of the present invention can obviously be used to manufacture other products), after the process planning server receives the first demand work order, the process planning server can retrieve the information stored in the process planning server based on the first-third process, so as to determine that the first process of the boiler of model A can be skipped. Continuing with the previous example, the first process of the boiler of model A can be skipped, which means that the gas supply pipeline and the combustion chamber can be processed separately first, and then the gas supply pipeline and the combustion chamber can be connected with the valve. In this case, it is considered that the first process can be skipped. In a specific example, the connection between the combustion chamber and the valve of the boiler of model A is outside the combustion chamber body. In this case, the gas supply pipeline and the combustion chamber can generally be processed separately, and then the gas supply pipeline and the combustion chamber can be connected with the valve. However, for some models of boilers (hereinafter referred to as model B), the connection between the combustion chamber and the valve is inside the combustion chamber body (of course, not inside the combustion chamber, but due to design requirements, there may be a shell outside the combustion chamber). In this case, it is necessary to first connect the gas supply pipe to the valve, then connect the valve to a part of the gas chamber (the part is located in the combustion chamber shell), and then process other structures of the combustion chamber;

[0066] Step 5: If the process planning server determines that the first process cannot be skipped based on the second process and the third process, the process planning server provides the first workpiece to the production line that initiated the first demand work order. Continuing with the previous example, for a boiler of model B, since the gas supply pipe must be connected to the valve first, then the valve must be connected to a part of the gas chamber (the part is located in the combustion chamber shell), and then other structures of the combustion chamber must be processed in the order of processing, the first process cannot be skipped for the boiler of model B.

[0067] Example 3

[0068] In embodiment 3, the method further comprises:

[0069] At the same time when the process planning server receives the first demand work order for the first workpiece, the process planning server receives the second demand work order for the first workpiece, wherein the second demand work order includes the fourth process using the first workpiece, and the second demand work order also includes the fifth process before the fourth process and the sixth process after the fourth process; generally speaking, the demand work order in the factory production process will not be approved immediately, and it takes a certain amount of time from the process planning server receiving the demand work order to the factory related engineers approving the demand work order. Therefore, there is a situation where the process planning server has not yet processed a certain demand work order and the process planning server receives another demand work order. Therefore, the "simultaneously" described in the present invention refers to the process planning server receiving another demand work order when the process planning server has not yet processed a certain demand work order; in addition, when the present invention executes the step "the process planning server provides the first workpiece to the production line that initiates the first demand work order", the first demand work order has been approved by the engineer, but whether it is really necessary to provide the first workpiece to the production line that initiates the first demand work order is determined according to the method described in the present invention; if the engineer does not approve the demand work order, the method described in the present invention will not be involved thereafter;

[0070] The process planning server determines whether the fourth process can be skipped based on the fifth process and the sixth process; in an example, the fourth to sixth processes may refer to the processes of connecting the gas supply pipe and valve, processing the gas supply pipe, and processing the combustion chamber of a boiler of a certain model C;

[0071] If the process planning server determines that the fourth process cannot be skipped based on the fifth and sixth processes, and if the process planning server determines that the first process can be skipped based on the second and third processes, the process planning server provides the first workpiece to the production line that initiates the second demand work order.

[0072] Example 4

[0073] In embodiment 4, the method further comprises:

[0074] If the process planning server receives the first demand work order for the first workpiece while no other demand work orders for the first workpiece are received, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server determines the total number of processes that require the first workpiece and cannot be skipped within a predetermined time, wherein the predetermined time is determined based at least on the next delivery time of the first workpiece; the process planning server generally stores a recent factory production plan, and based on the production plan, the process planning server can estimate the total number of first workpieces required in the production lines of the entire factory from the current time until the next delivery time of the first workpiece, and among these production lines, the processes that require the first workpiece in some production lines (for example, if the first workpiece is a valve, then the processes that require the first workpiece refer to, for example, the process of connecting the valve to the gas supply pipe) can be skipped, and the processes that require the first workpiece in other production lines cannot be skipped In a specific example, for example, there are still 3 days from the current time to the next delivery time of the first workpiece (the production line for producing valves may be produced separately by a branch factory due to the requirements of discrete processes), and the process planning server determines the total number of processes that require the first workpiece and cannot be skipped within 3 days, and the scheduled time is 3 days at this time; in another example, for example, within 3 days, the production line for manufacturing model B boilers is the last production line that requires valves, and the process of connecting the valves of model B boilers to the gas supply pipeline cannot be skipped. Assuming that the production line completes the manufacture of the gas pipeline and the parts connected to the gas chamber and the valve on the 2.5th day, the production line needs to submit a demand work order to the process planning server at this time, but the production line may need one day to inspect the manufactured gas pipeline and the parts connected to the gas chamber and the valve. In this case, the scheduled time can also be set to less than 2.5 days, because the production line actually uses the valve after 3 days;

[0075] Determining, by the process planning server, whether the total number is less than the inventory quantity of the first workpiece;

[0076] If the process planning server determines that the total number is lower than the inventory quantity of the first workpiece, the process planning server provides the first workpiece to the production line that initiated the first demand work order;

[0077] If the process planning server determines that the total is equal to or higher than the inventory quantity of the first workpiece, the process planning server temporarily does not provide the first workpiece to the production line that initiates the first demand work order.

[0078] Example 5

[0079] In Embodiment 5, the threshold number of workpieces is determined by the following steps:

[0080] The process planning server determines the total demand for the first workpiece from the current time to the next delivery time of the first workpiece based on the production schedule; as described in Example 4, the process planning server generally stores a recent factory production plan, and according to the production plan, the process planning server can estimate the total number of first workpieces required in the production lines of the entire factory from the current time until the next delivery time of the first workpiece, and the total number is the total demand for the first workpiece, and the total demand for the first workpiece includes the demand for the first workpiece from a part of the production lines whose processes of the first workpiece can be skipped, and also includes the demand for the first workpiece from a part of the production lines whose processes of the first workpiece cannot be skipped;

[0081] The process planning server determines the threshold quantity of workpieces based on the total demand, where the threshold quantity of workpieces is greater than the total demand. In one example, a certain value can be added to the total demand to obtain the threshold quantity of workpieces. The added value is mainly used to take into account the loss of workpieces. For example, during the production process, a workpiece may be damaged or even scrapped due to a production error. At this time, a process may originally require one workpiece, but due to a production error, a process requires two workpieces, so a portion of the workpiece threshold quantity needs to be reserved. In addition, the workpiece itself may have defects that are difficult to detect during quality inspection. At this time, it may also cause a process to require multiple workpieces.

[0082] Example 6

[0083] In embodiment 6, the method further comprises:

[0084] At the same time as the process planning server receives the first demand work order for the first workpiece, the process planning server receives a third demand work order for the first workpiece, wherein the third demand work order includes a seventh process using the first workpiece, and the third demand work order also includes an eighth process before the seventh process and a ninth process after the seventh process;

[0085] The process planning server determines whether the seventh process can be skipped based on the eighth process and the ninth process;

[0086] If the process planning server determines that the seventh process can be skipped based on the eighth process and the ninth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server continues to determine whether providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand will cause the inventory quantity of the first workpiece to be lower than the workpiece threshold quantity; in an example, assuming that the workpiece threshold quantity is 10 and the current inventory quantity of the first workpiece is 11, then after providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand, the inventory quantity will be lower than the workpiece threshold quantity, and therefore, the first workpiece cannot be provided to the production line that initiates the first demand and the production line that initiates the third demand at the same time;

[0087] If the process planning server determines that providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand will cause the inventory quantity of the first workpiece to be lower than the workpiece threshold quantity, the process planning server will continue to determine the first loss time of the production line with the first demand due to the lack of the first workpiece and the second loss time of the production line with the third demand due to the lack of the first workpiece; in one example, the first loss time and the second loss time are mainly due to the delay in the construction period caused by the lack of the first workpiece. For example, a certain type of boiler generally requires that the gas supply pipe and the combustion chamber must be connected through a valve within 1 day after the gas supply pipe and the combustion chamber are processed. If the time exceeds 1 day, it will take several hours to reprocess the interface between the gas pipe and the valve, and the interface between the combustion chamber and the valve to ensure sealing. For some boilers with less high sealing requirements, it is not necessary to spend several hours to reprocess the interface. Therefore, the boiler with less high sealing requirements has a shorter construction period delay caused by the lack of the first workpiece.

[0088] The process planning server provides the first workpiece to the production line that initiates the first demand or the production line that initiates the third demand based on the first loss time and the second loss time. Generally speaking, the process planning server will provide the first workpiece to the production line with a larger loss time.

[0089] Example 7

[0090] The present invention also provides a planning device for discrete process digital design, characterized in that the device includes a module for performing the following operations:

[0091] A first demand work order for a first workpiece is received by a process planning server, wherein the first demand work order includes a first process using the first workpiece, and the first demand work order also includes a second process before the first process and a third process after the first process;

[0092] The process planning server determines whether the inventory quantity of the first workpiece is lower than a threshold quantity of the workpiece;

[0093] If the process planning server determines that the inventory quantity of the first workpiece is higher than the workpiece threshold quantity, the process planning server provides the first workpiece to the production line of the first demand work order;

[0094] If the process planning server determines that the inventory quantity of the first workpiece is lower than or equal to the workpiece threshold quantity, the process planning server determines whether the first process can be skipped based on the second process and the third process;

[0095] If the process planning server determines that the first process cannot be skipped based on the second process and the third process, the process planning server provides the first workpiece to the production line that initiates the first demand work order.

[0096] In a preferred embodiment, the device further comprises a module for performing the following operations:

[0097] When the process planning server receives the first demand work order for the first workpiece, the process planning server receives a second demand work order for the first workpiece, wherein the second demand work order includes a fourth process using the first workpiece, and the second demand work order also includes a fifth process before the fourth process and a sixth process after the fourth process;

[0098] The process planning server determines whether the fourth process can be skipped based on the fifth process and the sixth process;

[0099] If the process planning server determines that the fourth process cannot be skipped based on the fifth and sixth processes, and if the process planning server determines that the first process can be skipped based on the second and third processes, the process planning server provides the first workpiece to the production line that initiates the second demand work order.

[0100] In a preferred embodiment, the device further comprises a module for performing the following operations:

[0101] If the process planning server receives the first demand work order for the first workpiece and does not receive other demand work orders for the first workpiece, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server determines the total number of processes that require the first workpiece and cannot be skipped within a predetermined time, wherein the predetermined time is determined based on at least a next delivery time of the first workpiece;

[0102] Determining, by the process planning server, whether the total number is less than the inventory quantity of the first workpiece;

[0103] If the process planning server determines that the total number is lower than the inventory quantity of the first workpiece, the process planning server provides the first workpiece to the production line that initiated the first demand work order;

[0104] If the process planning server determines that the total is equal to or higher than the inventory quantity of the first workpiece, the process planning server temporarily does not provide the first workpiece to the production line that initiates the first demand work order.

[0105] In a preferred embodiment, the threshold number of workpieces is determined by the following steps:

[0106] The process planning server determines the total demand for the first workpiece from the current time to the next delivery time of the first workpiece based on the production schedule;

[0107] The process planning server determines a threshold quantity of workpieces based on the total demand quantity, wherein the threshold quantity of workpieces is greater than the total demand quantity.

[0108] In a preferred embodiment, the device further comprises a module for performing the following operations:

[0109] At the same time as the process planning server receives the first demand work order for the first workpiece, the process planning server receives a third demand work order for the first workpiece, wherein the third demand work order includes a seventh process using the first workpiece, and the third demand work order also includes an eighth process before the seventh process and a ninth process after the seventh process;

[0110] The process planning server determines whether the seventh process can be skipped based on the eighth process and the ninth process;

[0111] If the process planning server determines that the seventh process can be skipped based on the eighth process and the ninth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server continues to determine whether the inventory quantity of the first workpiece will be lower than the workpiece threshold quantity after providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand;

[0112] If the process planning server determines that providing the first workpiece to the production line initiating the first demand and the production line initiating the third demand will cause the inventory quantity of the first workpiece to be lower than the threshold quantity of the workpiece, the process planning server continues to determine the first loss time of the production line initiating the first demand due to the lack of the first workpiece and the second loss time of the production line initiating the third demand due to the lack of the first workpiece;

[0113] The process planning server provides the first workpiece to the production line that initiates the first demand or the production line that initiates the third demand based on the first loss time and the second loss time.

[0114] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A planning method for digital design of discrete processes, characterized in that: The method comprises: A first demand work order for a first workpiece is received by a process planning server, wherein the first demand work order includes a first process using the first workpiece, and the first demand work order also includes a second process before the first process and a third process after the first process; The process planning server determines whether the inventory quantity of the first workpiece is lower than a threshold quantity of workpieces; If the process planning server determines that the inventory quantity of the first workpiece is higher than the workpiece threshold quantity, the process planning server provides the first workpiece to the production line that initiates the first demand work order; If the process planning server determines that the inventory quantity of the first workpiece is lower than or equal to the workpiece threshold quantity, the process planning server determines whether the first process can be skipped based on the second process and the third process; If the process planning server determines, based on the second process and the third process, that the first process cannot be skipped, the process planning server provides the first workpiece to the production line that initiates the first demand work order.

2. The method of claim 1, wherein: The method further comprises: When the process planning server receives the first demand work order for the first workpiece, the process planning server receives a second demand work order for the first workpiece, wherein the second demand work order includes a fourth process using the first workpiece, and the second demand work order also includes a fifth process before the fourth process and a sixth process after the fourth process; The process planning server determines whether the fourth process can be skipped based on the fifth process and the sixth process; If the process planning server determines that the fourth process cannot be skipped based on the fifth process and the sixth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server provides the first workpiece to the production line that initiates the second demand work order.

3. The method of claim 2, wherein: The method further comprises: If the process planning server receives the first demand work order for the first workpiece and does not receive other demand work orders for the first workpiece, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server determines the total number of processes that require the first workpiece and cannot be skipped within a predetermined time, wherein the predetermined time is determined based on at least a next delivery time of the first workpiece; Determining, by the process planning server, whether the total number is lower than the inventory quantity of the first workpiece; If the process planning server determines that the total is lower than the inventory quantity of the first workpiece, the process planning server provides the first workpiece to the production line that initiated the first demand work order; If the process planning server determines that the total is equal to or higher than the inventory quantity of the first workpiece, the process planning server temporarily does not provide the first workpiece to the production line that initiated the first demand work order.

4. The method of claim 3, wherein: The workpiece threshold quantity is determined by the following steps: The process planning server determines the total demand for the first workpiece from the current time to the next delivery time of the first workpiece based on the production schedule; The process planning server determines the threshold quantity of workpieces based on the total demand quantity, wherein the threshold quantity of workpieces is greater than the total demand quantity.

5. The method of claim 4, wherein: The method further comprises: At the same time as the process planning server receives the first demand work order for the first workpiece, the process planning server receives a third demand work order for the first workpiece, wherein the third demand work order includes a seventh process using the first workpiece, and the third demand work order also includes an eighth process before the seventh process and a ninth process after the seventh process; The process planning server determines whether the seventh process can be skipped based on the eighth process and the ninth process; If the process planning server determines that the seventh process can be skipped based on the eighth process and the ninth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server continues to determine whether the inventory quantity of the first workpiece will be lower than the workpiece threshold quantity after providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand; If the process planning server determines that providing the first workpiece to the production line initiating the first demand and the production line initiating the third demand will cause the inventory quantity of the first workpiece to be lower than the workpiece threshold quantity, the process planning server continues to determine the first loss time of the production line initiating the first demand due to the lack of the first workpiece and the second loss time of the production line initiating the third demand due to the lack of the first workpiece; The process planning server provides the first workpiece to a production line that initiates the first demand or a production line that initiates the third demand based on the first loss time and the second loss time.

6. A planning device for discrete process digital design, characterized in that: The apparatus includes modules for performing the following operations: A first demand work order for a first workpiece is received by a process planning server, wherein the first demand work order includes a first process using the first workpiece, and the first demand work order also includes a second process before the first process and a third process after the first process; The process planning server determines whether the inventory quantity of the first workpiece is lower than a threshold quantity of workpieces; If the process planning server determines that the inventory quantity of the first workpiece is higher than the workpiece threshold quantity, the process planning server provides the first workpiece to the production line that initiates the first demand work order; If the process planning server determines that the inventory quantity of the first workpiece is lower than or equal to the workpiece threshold quantity, the process planning server determines whether the first process can be skipped based on the second process and the third process; If the process planning server determines, based on the second process and the third process, that the first process cannot be skipped, the process planning server provides the first workpiece to the production line that initiates the first demand work order.

7. The device according to claim 6, wherein: The apparatus also includes a module for performing the following operations: When the process planning server receives the first demand work order for the first workpiece, the process planning server receives a second demand work order for the first workpiece, wherein the second demand work order includes a fourth process using the first workpiece, and the second demand work order also includes a fifth process before the fourth process and a sixth process after the fourth process; The process planning server determines whether the fourth process can be skipped based on the fifth process and the sixth process; If the process planning server determines that the fourth process cannot be skipped based on the fifth process and the sixth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server provides the first workpiece to the production line that initiates the second demand work order.

8. The device according to claim 7, wherein: The apparatus also includes a module for performing the following operations: If the process planning server receives the first demand work order for the first workpiece and does not receive other demand work orders for the first workpiece, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server determines the total number of processes that require the first workpiece and cannot be skipped within a predetermined time, wherein the predetermined time is determined based on at least a next delivery time of the first workpiece; Determining, by the process planning server, whether the total number is lower than the inventory quantity of the first workpiece; If the process planning server determines that the total is lower than the inventory quantity of the first workpiece, the process planning server provides the first workpiece to the production line that initiated the first demand work order; If the process planning server determines that the total is equal to or higher than the inventory quantity of the first workpiece, the process planning server temporarily does not provide the first workpiece to the production line that initiated the first demand work order.

9. The device of claim 8, wherein: The workpiece threshold quantity is determined by the following steps: The process planning server determines the total demand for the first workpiece from the current time to the next delivery time of the first workpiece based on the production schedule; The process planning server determines the threshold quantity of workpieces based on the total demand quantity, wherein the threshold quantity of workpieces is greater than the total demand quantity.

10. The device of claim 9, wherein: The apparatus also includes a module for performing the following operations: At the same time as the process planning server receives the first demand work order for the first workpiece, the process planning server receives a third demand work order for the first workpiece, wherein the third demand work order includes a seventh process using the first workpiece, and the third demand work order also includes an eighth process before the seventh process and a ninth process after the seventh process; The process planning server determines whether the seventh process can be skipped based on the eighth process and the ninth process; If the process planning server determines that the seventh process can be skipped based on the eighth process and the ninth process, and if the process planning server determines that the first process can be skipped based on the second process and the third process, the process planning server continues to determine whether the inventory quantity of the first workpiece will be lower than the workpiece threshold quantity after providing the first workpiece to the production line that initiates the first demand and the production line that initiates the third demand; If the process planning server determines that providing the first workpiece to the production line initiating the first demand and the production line initiating the third demand will cause the inventory quantity of the first workpiece to be lower than the workpiece threshold quantity, the process planning server continues to determine the first loss time of the production line initiating the first demand due to the lack of the first workpiece and the second loss time of the production line initiating the third demand due to the lack of the first workpiece; The process planning server provides the first workpiece to a production line that initiates the first demand or a production line that initiates the third demand based on the first loss time and the second loss time.

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