Thermostatic control method and device for hollow cooling screw

Abstract

The application discloses a kind of hollow cooling screw constant temperature control method and device.Therein, the method includes: according to predetermined time interval, the temperature of the entrance and the temperature of the exit of cooling medium flowing through hollow cooling screw are obtained;In the case where the temperature of the exit is not the same as the temperature of the entrance, the difference between the temperature of the exit and the temperature of the entrance is calculated, and the temperature difference is obtained;The flow rate adjustment strategy for adjusting the flow rate of the cooling medium is obtained by processing the temperature difference using a flow rate prediction model;According to the flow rate adjustment strategy, the flow rate of the cooling medium is adjusted from the current flow rate to the target flow rate, so that the temperature of the exit and the temperature of the entrance are the same.The application solves the technical problem that the hollow screw is sensitive to temperature in related technology, and it is difficult to meet the precision requirement when using traditional method to control the temperature of hollow screw.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision temperature control, in particular to a constant temperature control method and device for a hollow cooling lead screw. BACKGROUND

[0002] A cooling machine is a commonly used cooling equipment in industry, which ensures the normal operation of related machines. The mainstream technology in the prior art is to use frequency conversion technology to adjust the refrigerating capacity of the water cooling machine in real time according to the feedback of a temperature sensor, so as to realize accurate temperature control of related equipment. In a machine tool, although this technology can ensure the normal operation of devices such as an electric spindle and a linear motor, it cannot ensure the accurate temperature control of a hollow cooling lead screw which is more sensitive to temperature. The accuracy of a lead screw is an important guarantee for the positioning accuracy of a machine tool, and thermal changes will cause thermal elongation and shrinkage of the lead screw. For a precision machine tool, the temperature of the hollow cooling lead screw is often controlled in real time to keep it constant. However, the accuracy of the lead screw is affected by heat, and it is unrealistic to use a water cooling machine to control the temperature of the lead screw in real time to keep it constant.

[0003] At present, no effective solution has been proposed for the problem in the prior art that it is difficult to meet the accuracy requirement when the hollow lead screw is controlled in temperature by using a traditional method due to the sensitivity of the hollow lead screw to temperature. SUMMARY

[0004] The embodiments of the present application provide a constant temperature control method and device for a hollow cooling lead screw, so as to at least solve the technical problem in the prior art that it is difficult to meet the accuracy requirement when the hollow lead screw is controlled in temperature by using a traditional method due to the sensitivity of the hollow lead screw to temperature.

[0005] According to an aspect of some embodiments of the present application, there is provided a method for constant temperature control of a hollow cooling lead screw, comprising: obtaining an inlet temperature and an outlet temperature of a cooling medium flowing through the hollow cooling lead screw at a predetermined time interval, wherein the inlet temperature refers to a temperature of the cooling medium when flowing into the hollow cooling lead screw, and the outlet temperature refers to a temperature of the cooling medium when flowing out of the hollow cooling lead screw; in a case where the outlet temperature is not equal to the inlet temperature, calculating a difference between the outlet temperature and the inlet temperature to obtain a temperature difference; processing the temperature difference by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting a flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each of the plurality of sets of training data comprises a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; and adjusting the flow rate of the cooling medium from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature is equal to the inlet temperature, wherein the current flow rate is the flow rate of the cooling medium currently flowing through the hollow cooling lead screw, and the target flow rate is the flow rate of the cooling medium obtained by adjusting the current flow rate according to the flow rate adjustment strategy.

[0006] Optionally, processing the temperature difference by using the flow rate prediction model to obtain the flow rate adjustment strategy for adjusting the current flow rate of the cooling medium comprises: processing the temperature difference by using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; in a case where the outlet temperature is greater than the inlet temperature, determining that the flow rate adjustment strategy is to increase the flow rate of the cooling medium by the flow rate change value based on the current flow rate; and in a case where the outlet temperature is less than the inlet temperature, determining that the flow rate adjustment strategy is to decrease the flow rate of the cooling medium by the flow rate change value based on the current flow rate.

[0007] Optionally, the method for constant temperature control of the hollow cooling lead screw further comprises: determining that the cooling medium flowing out of the hollow cooling lead screw is a target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period after the cooling medium flows out of the hollow cooling lead screw; transferring the target cooling medium stored in the collection area to a cooling area at a predetermined time period to perform recovery processing on the target cooling medium by using the cooling area, so as to restore the temperature of the target cooling medium to a predetermined temperature; and transferring the target cooling medium processed in the cooling area to a constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium with the predetermined temperature.

[0008] Optionally, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so as to use the cooling area to perform recovery processing on the target cooling medium, and restore the temperature of the target cooling medium to a predetermined temperature, comprising: acquiring a current temperature of the target cooling medium in the cooling area; in the case that the current temperature is greater than the predetermined temperature, controlling a variable frequency cooling device to increase a predetermined frequency on the basis of a current frequency, or controlling a fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium, and restore the temperature of the target cooling medium to the predetermined temperature, wherein the variable frequency cooling device is a device that uses a variable frequency technology to perform recovery processing on the target cooling medium, and the fixed frequency cooling device is a device that uses a fixed frequency technology to perform recovery processing on the target cooling medium; in the case that the current temperature is less than the predetermined temperature, controlling the variable frequency cooling device to reduce the predetermined frequency on the basis of the current frequency, or controlling the fixed frequency cooling device to stop running or reduce running time, so as to perform recovery processing on the target cooling medium, and restore the temperature of the target cooling medium to the predetermined temperature.

[0009] Optionally, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period, so as to use the cooling area to perform recovery processing on the target cooling medium, and restore the temperature of the target cooling medium to a predetermined temperature, comprising: acquiring a first cold liquid amount of the target cooling medium in the collection area and a second cold liquid amount of the cooling medium in the constant temperature area; in the case that the first cold liquid amount is greater than the second cold liquid amount, controlling a variable frequency cooling device to increase a predetermined frequency on the basis of a current frequency, or controlling a fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium in the cooling area, and restore the temperature of the target cooling medium to the predetermined temperature; in the case that the first cold liquid amount is less than the second cold liquid amount, controlling the variable frequency cooling device to reduce the predetermined frequency on the basis of the current frequency, or controlling the fixed frequency cooling device to stop running or reduce running time, so as to perform recovery processing on the target cooling medium in the cooling area, and restore the temperature of the target cooling medium to the predetermined temperature.

[0010] Optionally, the constant temperature control method of the hollow cooling screw rod further comprises: controlling a flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the constant temperature area flows into the hollow cooling screw rod at the target flow rate.

[0011] Optionally, the constant temperature control method of the hollow cooling screw rod further comprises: in the case of using a plurality of parallel hollow cooling screw rods for constant temperature control, using different flow rate regulators respectively to control the flow rate of the cooling medium flowing into each of the hollow cooling screw rods, so that the outlet temperature and the inlet temperature of each of the hollow cooling screw rods are the same.

[0012] According to another aspect of the embodiments of the present application, a constant temperature control device of a hollow cooling screw rod is also provided, comprising: a first obtaining unit configured to obtain an inlet temperature and an outlet temperature of a cooling medium flowing through the hollow cooling screw rod at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling screw rod, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling screw rod; a second obtaining unit configured to calculate a difference between the outlet temperature and the inlet temperature to obtain a temperature difference value in the case that the outlet temperature is not the same as the inlet temperature; a third obtaining unit configured to process the temperature difference value by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each of the plurality of sets of training data comprises a sample temperature difference value and a sample flow rate adjustment strategy corresponding to the sample temperature difference value; and an adjustment unit configured to adjust the flow rate of the cooling medium from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium currently flowing through the hollow cooling screw rod, and the target flow rate is the flow rate obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy.

[0013] Optionally, the third obtaining unit comprises: a first obtaining module configured to process the temperature difference value by using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; a first determination module configured to determine that the flow rate adjustment strategy is to increase the flow rate of the cooling medium by the flow rate change value based on the current flow rate in the case that the outlet temperature is greater than the inlet temperature; and a second determination module configured to determine that the flow rate adjustment strategy is to decrease the flow rate of the cooling medium by the flow rate change value based on the current flow rate in the case that the outlet temperature is less than the inlet temperature.

[0014] Optionally, the constant temperature control device of the hollow cooling screw rod further comprises: a determination unit configured to determine that the cooling medium flowing out of the hollow cooling screw rod is a target cooling medium; a first storage unit configured to store the target cooling medium in a collection area, wherein the collection area is configured to store the cooling medium for a predetermined time period during which the cooling medium flows out of the hollow cooling screw rod; a processing unit configured to transfer the target cooling medium stored in the collection area to a cooling area according to a predetermined time period, so as to perform recovery processing on the target cooling medium in the cooling area to restore the temperature of the target cooling medium to a predetermined temperature; and a second storage unit configured to transfer the target cooling medium processed in the cooling area to a constant temperature area for storage, wherein the constant temperature area is configured to store the cooling medium with the predetermined temperature.

[0015] Optionally, the processing unit comprises: a second acquisition module configured to acquire a current temperature of the target cooling medium in the cooling area; a first control module configured to, in a case where the current temperature is greater than the predetermined temperature, control a variable frequency cooling device to increase a predetermined frequency on the basis of a current frequency, or control a fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature, wherein the variable frequency cooling device is a device that performs recovery processing on the target cooling medium by using a variable frequency technology, and the fixed frequency cooling device is a device that performs recovery processing on the target cooling medium by using a fixed frequency technology; and a second control module configured to, in a case where the current temperature is less than the predetermined temperature, control the variable frequency cooling device to reduce the predetermined frequency on the basis of the current frequency, or control the fixed frequency cooling device to stop running or reduce running time, so as to perform recovery processing on the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature.

[0016] Optionally, the processing unit comprises: a third acquisition module configured to acquire a first cooling liquid amount of the target cooling medium in the collection area and a second cooling liquid amount of the cooling medium in the constant temperature area; a third control module configured to, in a case where the first cooling liquid amount is greater than the second cooling liquid amount, control a variable frequency cooling device to increase a predetermined frequency on the basis of a current frequency, or control a fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium in the cooling area to restore the temperature of the target cooling medium to the predetermined temperature; and a fourth control module configured to, in a case where the first cooling liquid amount is less than the second cooling liquid amount, control the variable frequency cooling device to reduce the predetermined frequency on the basis of the current frequency, or control the fixed frequency cooling device to stop running or reduce running time, so as to perform recovery processing on the target cooling medium in the cooling area to restore the temperature of the target cooling medium to the predetermined temperature.

[0017] Optionally, the thermostatic control device of the hollow cooling screw further comprises a first control unit configured to control the flow rate adjuster to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the thermostatic zone flows into the hollow cooling screw at the target flow rate.

[0018] Optionally, the thermostatic control device of the hollow cooling screw further comprises a second control unit configured to control the flow rate of the cooling medium flowing into each of the hollow cooling screws using different flow rate adjusters respectively, so that the outlet temperature and the inlet temperature of each of the hollow cooling screws are the same.

[0019] According to another aspect of the embodiments of the present application, there is also provided a thermostatic control system of a hollow cooling screw, which uses any of the above-mentioned thermostatic control methods of a hollow cooling screw.

[0020] According to another aspect of the embodiments of the present application, there is also provided a computer readable storage medium comprising a stored program, wherein the program performs any of the above-mentioned thermostatic control methods of a hollow cooling screw.

[0021] According to another aspect of the embodiments of the present application, there is also provided a processor configured to run a program, wherein the program performs any of the above-mentioned thermostatic control methods of a hollow cooling screw when running.

[0022] According to another aspect of the embodiments of the present application, there is also provided a computer program product comprising computer instructions configured to perform any of the above-mentioned thermostatic control methods of a hollow cooling screw when executed by a processor.

[0023] In the embodiment of the present application, the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling lead screw are obtained at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling lead screw, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling lead screw; in the case where the outlet temperature is different from the inlet temperature, the difference between the outlet temperature and the inlet temperature is calculated to obtain a temperature difference; the temperature difference is processed by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each set of the plurality of sets of training data includes a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; the flow rate of the cooling medium is adjusted from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the current flow rate of the cooling medium flowing through the hollow cooling lead screw, and the target flow rate is the flow rate obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy. Through the above technical solution, the purpose of adjusting the flow rate of the cooling medium by monitoring the temperature of the cooling medium flowing into and out of the hollow cooling lead screw is achieved, the technical effect of controlling the flow rate of the cooling medium by real-time monitoring of the temperature of the cooling medium to accurately control the temperature of the hollow cooling lead screw is achieved, the accuracy of temperature control of the hollow cooling lead screw is improved, and the technical problem that the traditional method for temperature control of the hollow lead screw cannot meet the accuracy requirement due to the sensitivity of the hollow lead screw to temperature is solved. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate certain illustrative embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0025] Figure 1 is a hardware structure block diagram of a mobile terminal of a constant temperature control method of a hollow cooling lead screw according to an embodiment of the present application;

[0026] Figure 2 is a flow chart of a constant temperature control method of a hollow cooling lead screw according to an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of temperature control of a single hollow cooling lead screw according to an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of temperature control of a plurality of hollow cooling lead screws according to an embodiment of the present application;

[0029] Figure 5This is a schematic diagram of a constant temperature control device for a hollow cooling screw according to an embodiment of the present invention. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] As described in the background section, due to the temperature sensitivity of hollow lead screws, traditional methods for temperature control of hollow lead screws are insufficient to meet accuracy requirements. To address these shortcomings, this invention provides a method and apparatus for constant temperature control of hollow cooling lead screws.

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] The methods and embodiments provided in this invention can be executed on a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a constant temperature control method for a hollow cooling screw according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1The illustrated structure is merely schematic and does not impose any limitation on the structure of the mobile terminal described above. For example, the mobile terminal can further include more or less components than those shown, or have different configurations of the components shown. Figure 1 The illustrated structure is merely schematic and does not impose any limitation on the structure of the mobile terminal described above. For example, the mobile terminal can further include more or less components than those shown, or have different configurations of the components shown. Figure 1 The illustrated structure is merely schematic and does not impose any limitation on the structure of the mobile terminal described above. For example, the mobile terminal can further include more or less components than those shown, or have different configurations of the components shown.

[0035] The memory 104 is operable to store computer programs, such as software programs of application software and modules, for example, the computer program corresponding to the constant temperature control method of the hollow cooling lead screw in the embodiments of the present application. The processor 102 executes various functional applications and data processing, i.e., implements the method described above, by running the computer program stored in the memory 104. The memory 104 can include a high-speed random access memory, and can further include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some examples, the memory 104 can further include a memory remotely disposed relative to the processor 102, which can be connected to the mobile terminal through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The specific examples of the network can include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 can be a radio frequency (RF) module, which is used to communicate with the Internet in a wireless manner.

[0036] According to the embodiments of the present application, a method embodiment of the constant temperature control method of the hollow cooling lead screw is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown.

[0037] Figure 2 is a flowchart of the constant temperature control method of the hollow cooling lead screw according to the embodiments of the present application, as shown in Figure 2 The method includes the following steps:

[0038] In step S202, the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling lead screw are obtained at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling lead screw, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling lead screw.

[0039] Specifically, in the industrial equipment requiring high-precision positioning and motion control, such as precision machine tools (for example, numerical control machine tools, machining centers), positioning devices on automated production lines, linear drive units of robot arms, high-end detection equipment (such as three-coordinate measuring machines), etc., the hollow screw rod (i.e., the hollow cooling screw rod in the embodiment of the present application) as a key linear motion transmission component, the precise control of the temperature of the hollow cooling screw rod is crucial to ensure the precision, stability and service life of the equipment.

[0040] In this embodiment, the current temperature change of the hollow cooling screw rod can be monitored by monitoring the inlet temperature of the cooling medium when flowing into the hollow cooling screw rod and the outlet temperature of the cooling medium when flowing out of the hollow cooling screw rod in real time, so as to control the temperature thereof.

[0041] It should be noted that the cooling medium is generally stored in the cooling machine before flowing into the hollow cooling screw rod, so the inlet temperature of the cooling medium when flowing into the hollow cooling screw rod should be consistent at each time. In order to save monitoring cost, the inlet temperature of the cooling medium when flowing into the hollow cooling screw rod can also not be monitored in real time, and only the temperature of the cooling medium flowing out of the cooling machine needs to be monitored. Of course, in order to ensure the accuracy of the monitoring data, a temperature collection point can be arranged on the side where the cooling medium flows into the hollow cooling screw rod to monitor the inlet temperature of the cooling medium when flowing into the hollow cooling screw rod in real time, so as to ensure the accuracy of the monitoring data and also monitor whether there is a large temperature change when the cooling medium flows into the hollow cooling screw rod after flowing out of the cooling machine, so as to monitor whether there is a fault. Of course, whether to monitor the inlet temperature of the cooling medium when flowing into the hollow cooling screw rod in real time by arranging a temperature collection point can be selected according to actual conditions, which is not limited here.

[0042] It should be noted that the technical solution provided by the embodiment of the present application is to monitor the inlet temperature and outlet temperature of the cooling medium flowing through the hollow cooling screw rod to adjust the flow rate of the cooling medium under the premise that the temperature of the cooling medium is consistent (i.e., the inlet temperature of the cooling medium flowing into the hollow cooling screw rod), so as to control the flow of the cooling medium flowing into the hollow cooling screw rod, and then realize precise temperature control.

[0043] In step S204, if the outlet temperature is different from the inlet temperature, the difference between the outlet temperature and the inlet temperature is calculated to obtain a temperature difference.

[0044] In this embodiment, if the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling screw rod are monitored to be different, the temperature difference between the two temperatures can be determined to provide a data basis for formulating a strategy to adjust the condition subsequently.

[0045] In step S206, the temperature difference is processed by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each of the plurality of sets of training data includes a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference.

[0046] In this embodiment, the temperature of the hollow cooling lead screw can be controlled by adjusting the flow rate of the cooling medium. When it is monitored that the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling lead screw are different, the temperature difference obtained in step S204 can be analyzed and processed by using the corresponding flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium.

[0047] In step S208, the flow rate of the cooling medium is adjusted from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium currently flowing through the hollow cooling lead screw, and the target flow rate is the flow rate of the cooling medium obtained by adjusting the current flow rate according to the flow rate adjustment strategy.

[0048] In this embodiment, the flow rate of the cooling medium flowing out of the cooling machine can be adjusted according to the flow rate adjustment strategy obtained in step S206 to adjust it to the desired target flow rate, thereby controlling the temperature of the hollow cooling lead screw and keeping the temperature of the hollow cooling lead screw as constant as possible to achieve precise temperature control.

[0049] From the above, the technical scheme provided by the above embodiment of the present application can obtain the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling lead screw at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling lead screw, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling lead screw; in the case that the outlet temperature is not the same as the inlet temperature, the difference between the outlet temperature and the inlet temperature is calculated to obtain a temperature difference; the temperature difference is processed by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each set of the plurality of sets of training data includes a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; the flow rate of the cooling medium is adjusted from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium currently flowing through the hollow cooling lead screw, and the target flow rate is the flow rate obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy, thereby achieving the purpose of adjusting the flow rate of the cooling medium by monitoring the temperature of the cooling medium flowing into and out of the hollow cooling lead screw to control the temperature of the hollow cooling lead screw, realizing the technical effect of controlling the flow of the cooling medium by real-time monitoring of the temperature of the cooling medium to precisely control the temperature of the hollow cooling lead screw, and improving the precision of temperature control of the hollow cooling lead screw.

[0050] Therefore, the technical scheme provided by the above embodiment of the present application solves the technical problem that it is difficult to meet the precision requirement when using a traditional method to control the temperature of the hollow lead screw due to the sensitivity of the hollow lead screw to temperature.

[0051] According to the above embodiment of the present application, the temperature difference is processed by using the flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the current flow rate of the cooling medium, including: the temperature difference is processed by using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; in the case that the outlet temperature is greater than the inlet temperature, the flow rate adjustment strategy is determined as: increasing the flow rate of the cooling medium by the flow rate change value based on the current flow rate; in the case that the outlet temperature is less than the inlet temperature, the flow rate adjustment strategy is determined as: reducing the flow rate of the cooling medium by the flow rate change value based on the current flow rate.

[0052] Specifically, when the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling screw rod are monitored to be different, the absolute value of the temperature difference between the outlet temperature and the inlet temperature can be determined by calculation; then the absolute value of the temperature difference can be analyzed and processed by using the flow rate prediction model, so as to obtain the amount of change (i.e. the flow rate change value) required when adjusting the flow rate of the cooling medium. Here, the adjustment can be increasing the flow rate change value or decreasing the flow rate change value on the basis of the current flow rate of the cooling medium.

[0053] It should be noted that, generally, the increase of the heat of the hollow cooling screw rod itself or the rise of the ambient temperature can cause the temperature of the hollow cooling screw rod to rise, at this time, the temperature of the cooling medium flowing out of the hollow cooling screw rod (i.e. the outlet temperature) can be higher than the inlet temperature, and the flow rate of the cooling medium needs to be increased (i.e. the flow rate change value is added to the current flow rate of the cooling medium to increase the flow rate), which is equivalent to increasing the flow of the cooling medium into the hollow cooling screw rod in the next time period, so as to accelerate the cooling of the hollow cooling screw rod, so that the temperature of the hollow cooling screw rod is kept as constant as possible.

[0054] Although theoretically, the temperature of the cooling medium at the outlet of the hollow cooling screw rod should not be lower than the temperature at the inlet, because under normal working conditions, the main function of the cooling medium is to absorb the heat generated by the hollow screw rod during operation, so as to keep the temperature of the screw rod within the ideal range. When the cooling medium passes through the hollow screw rod, it exchanges heat with the inside of the screw rod and absorbs the heat generated by the screw rod due to friction, load, etc., so the temperature of the outlet cooling medium is usually higher than that of the inlet; however, in some special cases, the temperature of the cooling medium at the outlet of the hollow cooling screw rod can be temporarily lower than the temperature at the inlet, at this time, the flow rate of the cooling medium needs to be reduced (i.e. the flow rate change value is reduced on the basis of the current flow rate of the cooling medium to reduce the flow rate), which is equivalent to reducing the flow of the cooling medium into the hollow cooling screw rod in the next time period, so as to weaken the cooling capacity of the cooling medium for the hollow cooling screw rod, so that the temperature of the hollow cooling screw rod is kept as constant as possible.

[0055] According to the above embodiment of the present application, the constant temperature control method of the hollow cooling screw rod further comprises: determining the cooling medium flowing out of the hollow cooling screw rod as a target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium for a predetermined period of time after the cooling medium flows out of the hollow cooling screw rod; transferring the target cooling medium stored in the collection area to a cooling area according to a predetermined time period, so as to use the cooling area to recover and process the target cooling medium, so that the temperature of the target cooling medium is restored to a predetermined temperature; transferring the processed target cooling medium in the cooling area to a constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium with a temperature of the predetermined temperature.

[0056] The following is combined Figure 3 The embodiments of the present invention will be described in detail below. Figure 3 This is a schematic diagram illustrating temperature control of a single hollow cooling lead screw according to an embodiment of the present invention, as shown below. Figure 3 As shown, temperature acquisition points can be set on both sides of the hollow cooling screw, i.e., the side where the cooling medium flows into the hollow cooling screw and the side where the cooling medium flows out of the hollow cooling screw, respectively. Corresponding temperature acquisition equipment (such as temperature sensors, inductors, etc.) is used to monitor the inlet and outlet temperatures of the cooling medium flowing through the hollow cooling screw in real time. The cooler also adopts a zone setting, specifically divided into: an inlet collection zone (i.e., the collection zone mentioned above), a cooling zone, and an outlet constant temperature zone (i.e., the constant temperature zone mentioned above). The outlet constant temperature zone is used to store the cooling medium at a constant temperature to ensure that the inlet temperature of the cooling medium flowing into the hollow cooling screw is constant. The cooling zone is used to cool the cooling medium pumped to this zone. After it is cooled to the set temperature (i.e., the predetermined temperature mentioned above), the cooling medium in this zone can be pumped to the outlet constant temperature zone. The inlet collection zone is used to temporarily store the cooling medium flowing out of the hollow cooling screw (which can be understood as cooling return water, i.e., the target cooling medium mentioned above), mainly to prevent the high-temperature cooling return water from suddenly entering the cooling zone and affecting the cooling of the cooling zone.

[0057] It should be noted that the cooling medium flows from the outlet constant temperature zone of the cooler into the hollow cooling screw, and after flowing out of the hollow cooling screw, it flows into the inlet collection zone of the cooler for temporary storage. It is then pumped to the cooling zone for cooling, and after returning to the set temperature, it is pumped back to the outlet constant temperature zone for storage. This cycle repeats, creating a dynamic loop that continues until the equipment stops. Similarly, the process provided in the above embodiments of the present invention, which involves monitoring the inlet and outlet temperatures of the cooling medium flowing through the hollow cooling screw to regulate the flow rate of the cooling medium and control the flow of the cooling medium into the hollow cooling screw, thereby achieving precise temperature control, is also a dynamic loop. During equipment operation, the hollow cooling screw must be continuously temperature-controlled until the equipment stops.

[0058] In a specific embodiment of the present application, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period to recover the target cooling medium in the cooling area to restore the temperature of the target cooling medium to a predetermined temperature, including: obtaining the current temperature of the target cooling medium in the cooling area; in the case that the current temperature is greater than the predetermined temperature, controlling the variable frequency cooling device to increase the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start to recover the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature, wherein the variable frequency cooling device is a device that recovers the target cooling medium by using variable frequency technology, and the fixed frequency cooling device is a device that recovers the target cooling medium by using fixed frequency technology; in the case that the current temperature is less than the predetermined temperature, controlling the variable frequency cooling device to decrease the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time to recover the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature.

[0059] It should be noted that the variable frequency cooling device and the fixed frequency cooling device are both cooling machines, the difference is that the cooling machine is cooled by using variable frequency technology or fixed frequency technology, and the import collection area, the cooling area and the outlet constant temperature area are three different partitions in the cooling machine, here different technologies can be used to realize the cooling of the cooling return water in the cooling area of the cooling machine.

[0060] On the one hand, the processing efficiency of the cooling medium in the cooling area can be adjusted by comparing the temperature of the cooling return water with the predetermined temperature of the cooling medium set in advance, for example, if the temperature of the cooling return water is higher than the predetermined temperature, it means that the processing efficiency of the cooling medium in the cooling area should be accelerated, which can be achieved by increasing the frequency of the variable frequency cooling device or starting the fixed frequency cooling device, otherwise, the processing efficiency can be slowed down by reducing the frequency of the variable frequency cooling device, or controlling the fixed frequency cooling device to stop running or reduce the running time, so that the cooling return water can be restored to the set temperature by the processing of the cooling area.

[0061] It should be noted that in the case that the temperature of the cooling return water is exactly the same as the predetermined temperature of the cooling medium set in advance, the cooling machine can be controlled to process normally according to the current state.

[0062] In another specific embodiment of the present application, the target cooling medium stored in the collection area is transferred to the cooling area according to a predetermined time period to recover the target cooling medium in the cooling area to a predetermined temperature, comprising: obtaining a first cold liquid amount of the target cooling medium in the collection area and a second cold liquid amount of the cooling medium in the constant temperature area; in the case that the first cold liquid amount is greater than the second cold liquid amount, controlling the variable frequency cooling device to increase a predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start to recover the target cooling medium in the cooling area to the predetermined temperature; in the case that the first cold liquid amount is less than the second cold liquid amount, controlling the variable frequency cooling device to decrease a predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time to recover the target cooling medium in the cooling area to the predetermined temperature.

[0063] On the other hand, the processing efficiency of the cooling medium in the cooling area can be adjusted by comparing the cold liquid amount of the cooling return water in the import collection area and the cold liquid amount of the cooling medium in the export constant temperature area, for example, the cold liquid amount of the cooling return water in the import collection area is greater than the cold liquid amount of the cooling medium in the export constant temperature area, which indicates that the current cooling demand is high, and the processing efficiency can be accelerated by increasing the frequency of the variable frequency cooling device or starting the fixed frequency cooling device, and vice versa, which indicates that the current cooling demand is low, and the processing efficiency can be slowed down by decreasing the frequency of the variable frequency cooling device, or controlling the fixed frequency cooling device to stop running or reduce the running time, so that the cooling return water processed by the cooling area can be recovered to the set temperature.

[0064] It should be noted that in the case that the cold liquid amount of the cooling return water in the import collection area is exactly the same as the cold liquid amount of the cooling medium in the export constant temperature area, the cooling machine can be controlled to normally process according to the current state.

[0065] In addition, in the process of recovering the target cooling medium in the cooling area by using the fixed frequency technology or the variable frequency technology, various factors need to be considered to adjust the frequency or start-stop of the cooling machine, rather than considering only a single factor to control it.

[0066] According to the above-mentioned embodiments of the present application, the constant temperature control method of the hollow cooling screw rod further comprises: controlling the flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the constant temperature area flows into the hollow cooling screw rod at a target flow rate.

[0067] In this embodiment, a flow rate regulator can be provided in the outlet constant temperature zone so that the flow rate regulator can adjust the flow rate of the cooling medium flowing out of the outlet constant temperature zone according to the flow rate regulation strategy, so that the cooling medium can flow into the hollow cooling screw at the desired target flow rate.

[0068] According to the above embodiments of the present invention, the constant temperature control method for hollow cooling screws further includes: when using multiple parallel hollow cooling screws for constant temperature control, using different flow rate regulators to control the flow rate of the cooling medium flowing into each hollow cooling screw, so that the outlet temperature and inlet temperature of each hollow cooling screw are the same.

[0069] The following is combined Figure 4 The embodiments of the present invention will be described in detail below. Figure 4 This is a schematic diagram illustrating temperature control of multiple hollow cooling leads according to an embodiment of the present invention, such as... Figure 4 As shown, when using a single cooler to control the temperature of multiple cooling points (i.e., hollow cooling screws), multiple flow rate regulators can be set in the outlet constant temperature zone. Each flow rate regulator adjusts the flow rate of the cooling medium flowing into a specific hollow cooling screw individually. By adjusting the flow rate of each individual flow path, the problem of uneven cooling capacity due to multiple temperature control in traditional water chillers is solved.

[0070] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0071] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0072] According to an embodiment of the present invention, a temperature control device for a hollow cooling screw for implementing the above-described temperature control method for a hollow cooling screw is also provided. Figure 5is a schematic diagram of a constant temperature control device of a hollow cooling screw rod according to an embodiment of the present application, as shown, the device comprises: a first acquisition unit 51, a second acquisition unit 53, a third acquisition unit 55 and an adjusting unit 57. The constant temperature control device of the hollow cooling screw rod will be described in detail below. Figure 5

[0073] The first acquisition unit 51 is configured to acquire the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling screw rod at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling screw rod, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling screw rod.

[0074] The second acquisition unit 53 is configured to calculate the difference between the outlet temperature and the inlet temperature to obtain a temperature difference value when the outlet temperature is not the same as the inlet temperature.

[0075] The third acquisition unit 55 is configured to process the temperature difference value by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each set of the plurality of sets of training data comprises a sample temperature difference value and a sample flow rate adjustment strategy corresponding to the sample temperature difference value.

[0076] The adjusting unit 57 is configured to adjust the flow rate of the cooling medium from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the current flow rate of the cooling medium flowing through the hollow cooling screw rod, and the target flow rate is the flow rate obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy.

[0077] It should be noted that the first acquisition unit 51, the second acquisition unit 53, the third acquisition unit 55 and the adjusting unit 57 correspond to steps S202 to S208 in the above embodiment, and the four units have the same instances and application scenarios as the corresponding steps, but are not limited to the contents disclosed in the above embodiment.

[0078] ​From the above, in the scheme described in the above embodiments of the present application, the first acquisition unit can be used to acquire the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling lead screw at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling lead screw, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling lead screw; then the second acquisition unit is used to calculate the difference between the outlet temperature and the inlet temperature in the case where the outlet temperature is not the same as the inlet temperature, to obtain a temperature difference; then the third acquisition unit is used to process the temperature difference by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each set of the plurality of sets of training data includes a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; finally, the adjustment unit adjusts the flow rate of the cooling medium from the current flow rate to the target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium currently flowing through the hollow cooling lead screw, and the target flow rate is the flow rate obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy. The purpose of adjusting the flow rate of the cooling medium by monitoring the temperature of the cooling medium flowing into and out of the hollow cooling lead screw is achieved, the technical effect of controlling the flow rate of the cooling medium by real-time monitoring of the temperature of the cooling medium to precisely control the temperature of the hollow cooling lead screw is achieved, and the precision of temperature control of the hollow cooling lead screw is improved.

[0079] Therefore, by the technical scheme provided in the above embodiments of the present application, the technical problem that the traditional method for temperature control of the hollow lead screw cannot meet the precision requirement due to the sensitivity of the hollow lead screw to temperature is solved.

[0080] In an optional embodiment, the third acquisition unit includes: a first acquisition module configured to process the temperature difference by using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; a first determination module configured to determine the flow rate adjustment strategy as increasing the flow rate of the cooling medium by the flow rate change value based on the current flow rate in the case where the outlet temperature is greater than the inlet temperature; and a second determination module configured to determine the flow rate adjustment strategy as decreasing the flow rate of the cooling medium by the flow rate change value based on the current flow rate in the case where the outlet temperature is less than the inlet temperature.

[0081] In an alternative embodiment, the constant temperature control device of the hollow cooling screw rod further comprises: a determining unit configured to determine that the cooling medium flowing out of the hollow cooling screw rod is a target cooling medium; a first storage unit configured to store the target cooling medium in a collection area, wherein the collection area is configured to store the cooling medium for a predetermined period of time after the cooling medium flows out of the hollow cooling screw rod; a processing unit configured to transfer the target cooling medium stored in the collection area to a cooling area according to a predetermined time period, so as to perform recovery processing on the target cooling medium in the cooling area to restore the temperature of the target cooling medium to a predetermined temperature; and a second storage unit configured to transfer the target cooling medium processed in the cooling area to a constant temperature area for storage, wherein the constant temperature area is configured to store the cooling medium at the predetermined temperature.

[0082] In an alternative embodiment, the processing unit comprises: a second acquisition module configured to acquire a current temperature of the target cooling medium in the cooling area; a first control module configured to, in a case where the current temperature is greater than the predetermined temperature, control a variable frequency cooling device to increase a predetermined frequency on the basis of a current frequency, or control a fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature, wherein the variable frequency cooling device is a device that performs recovery processing on the target cooling medium by using a variable frequency technology, and the fixed frequency cooling device is a device that performs recovery processing on the target cooling medium by using a fixed frequency technology; and a second control module configured to, in a case where the current temperature is less than the predetermined temperature, control the variable frequency cooling device to decrease the predetermined frequency on the basis of the current frequency, or control the fixed frequency cooling device to stop running or reduce a running time, so as to perform recovery processing on the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature.

[0083] In an alternative embodiment, the processing unit comprises: a third acquisition module configured to acquire a first cold liquid amount of the target cooling medium in the collection area and a second cold liquid amount of the cooling medium in the constant temperature area; a third control module configured to, in a case where the first cold liquid amount is greater than the second cold liquid amount, control a variable frequency cooling device to increase a predetermined frequency on the basis of a current frequency, or control a fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium in the cooling area to restore the temperature of the target cooling medium to a predetermined temperature; and a fourth control module configured to, in a case where the first cold liquid amount is less than the second cold liquid amount, control the variable frequency cooling device to decrease the predetermined frequency on the basis of the current frequency, or control the fixed frequency cooling device to stop running or reduce a running time, so as to perform recovery processing on the target cooling medium in the cooling area to restore the temperature of the target cooling medium to the predetermined temperature.

[0084] In an alternative embodiment, the thermostatic control device of the hollow cooling screw further comprises a first control unit configured to control the flow rate regulator to adjust the flow rate of the cooling medium in the hollow cooling screw according to a flow rate adjustment strategy, so that the cooling medium in the thermostatic zone flows into the hollow cooling screw at a target flow rate.

[0085] In an alternative embodiment, the thermostatic control device of the hollow cooling screw further comprises a second control unit configured to control the flow rate of the cooling medium flowing into each of the hollow cooling screws using different flow rate regulators respectively, so that the outlet temperature and the inlet temperature of each of the hollow cooling screws are the same, in the case that multiple hollow cooling screws are used in parallel for thermostatic control.

[0086] According to another aspect of the embodiments of the present application, there is also provided a thermostatic control system of a hollow cooling screw, which uses any of the thermostatic control methods of the hollow cooling screw described above.

[0087] According to another aspect of the embodiments of the present application, there is also provided a computer-readable storage medium comprising a stored program, wherein the program performs any of the thermostatic control methods of the hollow cooling screw described above.

[0088] Optionally, in the present embodiment, the computer-readable storage medium can be located in any of the computer terminals in a group of computer terminals in a computer network, or in any of the communication devices in a group of communication devices.

[0089] Optionally, in the present embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: obtaining the inlet temperature and the outlet temperature of the cooling medium flowing through the hollow cooling screw at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling screw, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling screw; in the case that the outlet temperature is not the same as the inlet temperature, calculating the difference between the outlet temperature and the inlet temperature to obtain a temperature difference; processing the temperature difference using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data using machine learning, and each of the plurality of sets of training data comprises a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; adjusting the flow rate of the cooling medium from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the current flow rate of the cooling medium flowing through the hollow cooling screw, and the target flow rate is the flow rate of the cooling medium obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy.

[0090] Optionally, in the embodiment, the computer readable storage medium is configured to store program code for performing the following steps: processing the temperature difference by using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; in the case that the outlet temperature is greater than the inlet temperature, determining the flow rate adjustment strategy as: increasing the flow rate of the cooling medium by the flow rate change value based on the current flow rate; in the case that the outlet temperature is less than the inlet temperature, determining the flow rate adjustment strategy as: reducing the flow rate of the cooling medium by the flow rate change value based on the current flow rate.

[0091] Optionally, in the embodiment, the computer readable storage medium is configured to store program code for performing the following steps: determining the cooling medium flowing out of the hollow cooling lead screw as target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period of the cooling medium flowing out of the hollow cooling lead screw; transferring the target cooling medium stored in the collection area to a cooling area according to a predetermined time period, so as to perform recovery processing on the target cooling medium by using the cooling area to restore the temperature of the target cooling medium to a predetermined temperature; transferring the target cooling medium processed in the cooling area to a constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium with the temperature being the predetermined temperature.

[0092] Optionally, in the embodiment, the computer readable storage medium is configured to store program code for performing the following steps: obtaining the current temperature of the target cooling medium in the cooling area; in the case that the current temperature is greater than the predetermined temperature, controlling the variable frequency cooling device to increase the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature, wherein the variable frequency cooling device is a device that performs recovery processing on the target cooling medium by using variable frequency technology, and the fixed frequency cooling device is a device that performs recovery processing on the target cooling medium by using fixed frequency technology; in the case that the current temperature is less than the predetermined temperature, controlling the variable frequency cooling device to reduce the predetermined frequency based on the current frequency, or controlling the fixed frequency cooling device to stop running or reduce the running time, so as to perform recovery processing on the target cooling medium to restore the temperature of the target cooling medium to the predetermined temperature.

[0093] Optionally, in the embodiment, the computer readable storage medium is configured to store program code for performing the following steps: obtaining a first cooling liquid amount of the target cooling medium in the collection area and a second cooling liquid amount of the cooling medium in the constant temperature area; in the case that the first cooling liquid amount is greater than the second cooling liquid amount, controlling the variable frequency cooling device to increase a predetermined frequency based on a current frequency, or controlling the fixed frequency cooling device to start, so as to perform recovery processing on the target cooling medium in the cooling area, and restore the temperature of the target cooling medium to a predetermined temperature; in the case that the first cooling liquid amount is less than the second cooling liquid amount, controlling the variable frequency cooling device to decrease a predetermined frequency based on a current frequency, or controlling the fixed frequency cooling device to stop running or decrease running time, so as to perform recovery processing on the target cooling medium in the cooling area, and restore the temperature of the target cooling medium to a predetermined temperature.

[0094] Optionally, in the embodiment, the computer readable storage medium is configured to store program code for performing the following steps: controlling the flow rate regulator to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the constant temperature area flows into the hollow cooling lead screw at a target flow rate.

[0095] Optionally, in the embodiment, the computer readable storage medium is configured to store program code for performing the following steps: in the case of using a plurality of parallel hollow cooling lead screws for constant temperature control, using different flow rate regulators respectively to control the flow rate of the cooling medium flowing into each hollow cooling lead screw, so that the outlet temperature and the inlet temperature of each hollow cooling lead screw are the same.

[0096] According to another aspect of the embodiment of the present application, a processor is also provided, and the processor is used to run a program, wherein the program performs any one of the constant temperature control methods of the hollow cooling lead screw when running.

[0097] According to another aspect of the embodiment of the present application, a computer program product is also provided, and the computer program product comprises computer instructions, and the computer instructions perform any one of the constant temperature control methods of the hollow cooling lead screw when executed by a processor.

[0098] The serial numbers of the above embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0099] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0100] In several embodiments provided in the present application, it should be understood that the disclosed technology can be implemented by other means. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and actual implementation can have another division mode, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between units or modules, which can be electrical or other forms.

[0101] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0102] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0103] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and various program codes that can be stored in the medium.

[0104] The above is only the preferred embodiment of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A thermostatic control method of a hollow cooling screw, characterized by, The method comprises the following steps: acquiring an inlet temperature and an outlet temperature of a cooling medium flowing through a hollow cooling rod at a predetermined time interval, wherein the inlet temperature refers to the temperature of the cooling medium when flowing into the hollow cooling rod, and the outlet temperature refers to the temperature of the cooling medium when flowing out of the hollow cooling rod; in the case that the outlet temperature is not equal to the inlet temperature, calculating a difference between the outlet temperature and the inlet temperature to obtain a temperature difference value; processing the temperature difference value by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by training a plurality of sets of training data by machine learning, and each set of the plurality of sets of training data comprises a sample temperature difference value and a sample flow rate adjustment strategy corresponding to the sample temperature difference value; adjusting the flow rate of the cooling medium from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are equal, wherein the current flow rate is the flow rate of the cooling medium currently flowing through the hollow cooling rod, and the target flow rate is the flow rate obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy, The method further comprises: determining that the cooling medium flowing out of the hollow cooling rod is a target cooling medium; storing the target cooling medium in a collection area, wherein the collection area is used to store the cooling medium within a predetermined time period after the cooling medium flows out of the hollow cooling rod; transferring the target cooling medium stored in the collection area to a cooling area at a predetermined time period to perform recovery processing on the target cooling medium by using the cooling area, so that the temperature of the target cooling medium is restored to a predetermined temperature; and transferring the target cooling medium processed in the cooling area to a constant temperature area for storage, wherein the constant temperature area is used to store the cooling medium with the predetermined temperature.

2. The thermostatic control method of a hollow cooling bar according to claim 1, wherein, Processing the temperature difference value by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the current flow rate of the cooling medium, comprises: processing the temperature difference value by using the flow rate prediction model to obtain a flow rate change value for adjusting the current flow rate of the cooling medium; in the case that the outlet temperature is greater than the inlet temperature, determining that the flow rate adjustment strategy is to increase the flow rate of the cooling medium by the flow rate change value based on the current flow rate; in the case that the outlet temperature is less than the inlet temperature, determining that the flow rate adjustment strategy is to decrease the flow rate of the cooling medium by the flow rate change value based on the current flow rate.

3. The constant temperature control method of a hollow cooling bar according to claim 1, wherein Transferring the target cooling medium stored in the collection area to the cooling area at a predetermined time period to perform recovery processing on the target cooling medium by using the cooling area, so that the temperature of the target cooling medium is restored to a predetermined temperature, comprises: acquiring a current temperature of the target cooling medium in the cooling area; In the case that the current temperature is greater than the predetermined temperature, a variable frequency cooling device is controlled to increase a predetermined frequency based on a current frequency, or a fixed frequency cooling device is controlled to start to recover the target cooling medium to the predetermined temperature; the variable frequency cooling device is a device that recovers the target cooling medium by using a variable frequency technology, and the fixed frequency cooling device is a device that recovers the target cooling medium by using a fixed frequency technology. In the case that the current temperature is less than the predetermined temperature, the variable frequency cooling device is controlled to decrease the predetermined frequency based on the current frequency, or the fixed frequency cooling device is controlled to stop or reduce a running time to recover the target cooling medium to the predetermined temperature.

4. The constant temperature control method of a hollow cooling bar according to claim 1, wherein The target cooling medium stored in the collection area is transferred to a cooling area according to a predetermined time period to recover the target cooling medium to a predetermined temperature by using the cooling area, comprising: A first cold liquid amount of the target cooling medium in the collection area and a second cold liquid amount of the cooling medium in the constant temperature area are obtained. In the case that the first cold liquid amount is greater than the second cold liquid amount, a variable frequency cooling device is controlled to increase a predetermined frequency based on a current frequency, or a fixed frequency cooling device is controlled to start to recover the target cooling medium in the cooling area to the predetermined temperature. In the case that the first cold liquid amount is less than the second cold liquid amount, the variable frequency cooling device is controlled to decrease the predetermined frequency based on the current frequency, or the fixed frequency cooling device is controlled to stop or reduce a running time to recover the target cooling medium in the cooling area to the predetermined temperature.

5. The constant temperature control method of a hollow cooling bar according to claim 1, wherein Further comprising: The flow rate regulator is controlled to adjust the flow rate of the cooling medium according to the flow rate adjustment strategy, so that the cooling medium stored in the constant temperature area flows into the hollow cooling screw rod at the target flow rate.

6. The thermostatic control method of a hollow cooling bar according to claim 1, wherein Further comprising: In the case that a plurality of the hollow cooling screw rods are used in parallel for constant temperature control, different flow rate regulators are used to control the flow rate of the cooling medium flowing into each of the hollow cooling screw rods, so that the outlet temperature and the inlet temperature of each of the hollow cooling screw rods are the same.

7. A thermostatic control device for a hollow cooling screw, characterized by Comprising: A first obtaining unit is configured to obtain an inlet temperature and an outlet temperature of a cooling medium flowing through a hollow cooling screw rod according to a predetermined time interval, wherein the inlet temperature refers to a temperature of the cooling medium when flowing into the hollow cooling screw rod, and the outlet temperature refers to a temperature of the cooling medium when flowing out of the hollow cooling screw rod; A second obtaining unit is configured to calculate a difference between the outlet temperature and the inlet temperature to obtain a temperature difference in the case that the outlet temperature is not the same as the inlet temperature. The third obtaining unit is configured to process the temperature difference by using a flow rate prediction model to obtain a flow rate adjustment strategy for adjusting the flow rate of the cooling medium, wherein the flow rate prediction model is obtained by using a plurality of sets of training data to perform machine learning, and each of the plurality of sets of training data includes a sample temperature difference and a sample flow rate adjustment strategy corresponding to the sample temperature difference; The adjusting unit is configured to adjust the flow rate of the cooling medium from a current flow rate to a target flow rate according to the flow rate adjustment strategy, so that the outlet temperature and the inlet temperature are the same, wherein the current flow rate is the flow rate of the cooling medium currently flowing through the hollow cooling lead screw, and the target flow rate is the flow rate of the cooling medium obtained by adjusting the current flow rate of the cooling medium according to the flow rate adjustment strategy, The thermostatic control device of the hollow cooling lead screw further includes a determining unit configured to determine that the cooling medium flowing out of the hollow cooling lead screw is target cooling medium; a first storage unit configured to store the target cooling medium in a collection area, wherein the collection area is configured to store the cooling medium for a predetermined time period during which the cooling medium flows out of the hollow cooling lead screw; a processing unit configured to transfer the target cooling medium stored in the collection area to a cooling area according to a predetermined time period, so that the cooling area is used to perform recovery processing on the target cooling medium to restore the temperature of the target cooling medium to a predetermined temperature; and a second storage unit configured to transfer the target cooling medium processed in the cooling area to a thermostatic area for storage, wherein the thermostatic area is configured to store the cooling medium having the predetermined temperature.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium includes a stored program, wherein the program performs the thermostatic control method of the hollow cooling lead screw according to any one of claims 1 to 6.

9. A computer program product comprising computer instructions, characterized in that, The computer instructions are executed by the processor to perform the thermostatic control method of the hollow cooling lead screw according to any one of claims 1 to 6.

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