Temperature control method, device, machine tool and readable storage medium

Abstract

The present invention discloses a temperature control method, device, machine tool, and readable storage medium, relating to the field of machine tool technology. The method comprises: determining, based on the machine tool temperature control mode, to activate a sensor corresponding to the machine tool temperature control mode; using the activated sensor to obtain the temperature of a liquid medium in a hollow screw; and if the liquid medium temperature is within a preset temperature control range, controlling a temperature control source to output the liquid medium for temperature control in a preset manner, the preset manner including at least controlling temperature changes and / or controlling the liquid medium flow rate. The present invention can adaptively and more accurately adjust the temperature of the hollow screw, which is beneficial for ensuring the machining accuracy of the machine tool.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tools, and in particular to a temperature control method, a device, a machine tool and a readable storage medium. Background Art

[0002] In machine tools, if the heat generated by various moving actuators such as screws during operation cannot be dissipated and cooled in time, it may cause the screws to deform, thereby affecting the control accuracy.

[0003] Some existing screws utilize hollow shafts for cooling. By introducing coolant into the shaft, the generated heat can be promptly removed, enhancing the cooling effect of the screw. However, existing cooling systems can only be adjusted to the temperature set by the oil cooler, and a long pipeline is usually connected between the oil cooler and the hollow shaft, which reduces the actual cooling effect.

[0004] For example, there is a Chinese invention patent with application number 201710222539.5, which discloses a hollow screw that shortens the time it takes for the screw to reach thermal equilibrium temperature by setting a heating body in the screw cavity. There is also a Chinese utility model patent with application number 201220317599.8, which discloses a constant temperature screw with a hollow core structure inside and cooled by air circulation. There is also a Chinese invention patent with application number 201380054060.5, which discloses a thermal displacement prevention device and thermal displacement prevention method for a machine tool equipped with a ball screw. In view of the problem that the existing cooling of the key heating parts of the ball screw is mostly achieved indirectly, which is inefficient, thermal equilibrium is also achieved through active heating. However, the existing method cannot dissipate heat according to the operating mode of the machine tool, which easily causes unnecessary waste. Summary of the Invention

[0005] The main purpose of the present invention is to provide a temperature control method, device, machine tool and readable storage medium, which are conducive to ensuring the processing accuracy of the machine tool.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a temperature control method applied to a machine tool, wherein the machine tool includes a hollow screw, and the method comprises:

[0008] Determine, according to the temperature control mode of the machine tool, to enable a sensor corresponding to the temperature control mode of the machine tool;

[0009] Using the enabled sensor to obtain the temperature of the liquid medium of the hollow screw;

[0010] If the temperature of the liquid medium is within a preset temperature control range, the temperature control source is controlled in a preset manner to output the liquid medium for temperature control. The preset manner at least includes controlling temperature change and / or controlling liquid medium flow.

[0011] In one embodiment of the temperature control method, determining, according to the temperature control mode of the machine tool, to enable a sensor corresponding to the temperature control mode of the machine tool includes:

[0012] Acquiring environmental parameters, wherein the environmental parameters include at least ambient temperature;

[0013] The machine tool temperature control mode is determined according to the environmental parameters, and the machine tool temperature control mode includes any two or more of a low temperature environment mode, a normal temperature environment mode, and a high temperature environment mode.

[0014] In one embodiment of the temperature control method, the hollow screw includes a first region, a second region, and a third region pre-divided according to heat generation and / or structural strength; and obtaining the temperature of the liquid medium of the hollow screw using the activated sensor includes:

[0015] Acquiring a sensor signal from a sensor disposed in the first region of the hollow screw in the low-temperature environment mode;

[0016] Acquiring sensing signals of sensors arranged in the first area and the second area of ​​the hollow screw in the normal temperature environment mode;

[0017] Acquiring sensing signals of sensors arranged in the first area, the second area, and the third area of ​​the hollow screw in the high temperature environment mode;

[0018] The first area includes the area where the hollow screw bearing is located; the second area includes the area where the screw and the nut are connected; and the third area includes other areas other than the first area and the second area.

[0019] In one embodiment of the temperature control method, the environmental parameter further includes environmental humidity;

[0020] determining a machine tool temperature control mode according to the environmental parameters, wherein the machine tool temperature control mode includes any two or more of a normal temperature and normal humidity environment mode, a low temperature and low humidity environment mode, a low temperature and high humidity environment mode, a high temperature and high humidity environment mode, a high temperature and low humidity environment mode, a normal temperature and high humidity environment mode, and a normal temperature and low humidity environment mode;

[0021] Each of the machine tool temperature control modes corresponds to a specified temperature range;

[0022] The controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner includes controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner to adjust the hollow screw to the specified temperature range.

[0023] In one embodiment of the temperature control method, a current target temperature range is determined according to the environmental parameter;

[0024] The controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner includes controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner to cool the hollow screw to the target temperature range.

[0025] In one embodiment of the temperature control method, controlling the temperature control source to output the liquid medium for temperature control in a preset manner includes:

[0026] If the temperature of the liquid medium is within a preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is greater than a first preset value, then controlling to increase the flow rate of the liquid medium according to the difference between the temperature of the liquid medium and the preset temperature value;

[0027] If the liquid medium temperature is within the preset temperature control range and the difference between the liquid medium temperature and the preset temperature value is greater than a second preset value, the liquid medium temperature change is controlled according to the difference between the liquid medium temperature and the preset temperature value.

[0028] In one embodiment of the temperature control method, controlling the temperature change of the liquid medium according to the difference between the temperature of the liquid medium and a preset temperature value includes:

[0029] Determining a proportional valve control parameter according to a difference between the liquid medium temperature and a preset temperature value;

[0030] The proportional valve controls the mixing ratio of the liquid medium in the hollow structure respectively introduced into the hollow screw rod from the first pipe and the second pipe according to the proportional valve control parameter, so as to change the temperature of the liquid medium;

[0031] The liquid medium in the first pipe is a first temperature liquid medium, and the liquid medium in the second pipe is a second temperature liquid medium. The temperature of the first temperature liquid medium is lower than the ideal temperature range of the hollow screw, and the temperature of the second temperature liquid medium is higher than the ideal temperature range of the hollow screw.

[0032] In one embodiment of the temperature control method, the preset method of controlling the temperature control source to output the liquid medium for temperature control includes:

[0033] If the temperature of the liquid medium is within a preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is greater than a third preset value, the machine tool is controlled to stop and a prompt message is output; the prompt message includes sound, light flashing and / or graphic display prompt information;

[0034] The temperature change of the liquid medium is controlled according to the difference between the temperature of the liquid medium and a preset temperature value.

[0035] In a second aspect, the present invention provides a temperature control device for use in a machine tool, wherein the machine tool includes a hollow screw, and the device includes:

[0036] A determination module, configured to determine, based on a machine tool temperature control mode, to enable a sensor corresponding to the machine tool temperature control mode;

[0037] an acquisition module, for acquiring a temperature of a liquid medium of the hollow screw by utilizing an enabled sensor;

[0038] The control module is used to control the temperature control source to output the liquid medium for temperature control in a preset manner when the temperature of the liquid medium is within a preset temperature control range. The preset manner at least includes controlling temperature change and / or controlling the flow rate of the liquid medium.

[0039] In a third aspect, the present invention provides a machine tool, including a machine tool control system applying the temperature control method as described above, or including a machine tool control system having the temperature control device as described above.

[0040] In a fourth aspect, the present invention further provides a readable storage medium having a computer program stored thereon, which implements the steps of the temperature control method described above when the computer program is executed by a processor.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The temperature control method provided in this embodiment obtains the sensing information of the corresponding sensor according to different machine tool temperature control modes to control the temperature control source to output the liquid medium used for temperature control, thereby adjusting the temperature of the hollow screw rod. It can adaptively and more accurately adjust the temperature of the hollow screw rod, which is beneficial to ensuring the processing accuracy of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a flow chart of a temperature control method provided by the present invention in one embodiment;

[0044] Figure 2 is a flow chart of the temperature control method provided by the present invention under another embodiment;

[0045] Figure 3 This is a schematic diagram of a half-cutaway three-dimensional structure of a hollow screw rod pair provided by the present invention in one embodiment;

[0046] Figure 4 It is a functional module diagram of the temperature control device provided by the present invention.

[0047] Description of reference numerals:

[0048] Temperature control device 100; determination module 11; acquisition module 12; control module 13;

[0049] Hollow screw pair 1; hollow screw 11; nut 12; bearing 13; tail end 14; drive motor 15. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly disposed on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element. When an element is referred to as being “mounted on” another element, it may be directly mounted on the other element or there may be an intermediate element.

[0052] Furthermore, it should be understood that all directional indications (such as up, down, left, right, center, etc.) in the embodiments are intended only to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indications will also change accordingly. Terms such as "first" and "second" are used to distinguish different structural components. These terms are merely simplified descriptions of the present invention and should not be construed as limiting the present invention.

[0053] The temperature control method provided by the present invention is mainly used in machine tools. The machine tool may include a screw drive, which is specifically a hollow screw. The present invention adjusts the temperature in the hollow screw so that the temperature in the hollow screw can meet the expected requirements more promptly.

[0054] See also Figure 1 , is a flow chart of the temperature control method provided by the present invention under one embodiment. The flow chart only schematically shows some steps for implementing the control of the machine tool. Therefore, some steps can be added or reduced and / or the order of some steps can be adjusted according to different application scenarios and environmental conditions.

[0055] Figure 1 The temperature control method of this embodiment may include the following steps:

[0056] S101: Determine and activate a sensor corresponding to the machine tool temperature control mode according to the machine tool temperature control mode, wherein sensors are provided at different areas of the hollow screw rod. Therefore, after the machine tool temperature control mode is determined, the corresponding sensor can be activated.

[0057] In this embodiment, different machine tool temperature control modes may correspond to sensor on / off control in different areas. The determination of enabling the sensor corresponding to the machine tool temperature control mode according to the machine tool temperature control mode may be implemented as follows:

[0058] First, environmental parameters are acquired. These environmental parameters include at least the ambient temperature. Of course, these environmental parameters may also include the ambient humidity. Then, a machine tool temperature control mode is determined based on these environmental parameters. The machine tool temperature control mode may include any two or more of a low-temperature environment mode, a normal-temperature environment mode, and a high-temperature environment mode.

[0059] It is understood that when the environmental parameters include ambient temperature and ambient humidity, the determined machine tool temperature control mode may also include any two or more of a normal temperature and normal humidity environment mode, a low temperature and low humidity environment mode, a low temperature and high humidity environment mode, a high temperature and high humidity environment mode, a high temperature and low humidity environment mode, a normal temperature and high humidity environment mode, and a normal temperature and low humidity environment mode. Accordingly, more detailed environmental modes generally correspond to more precise temperature control, and each of the machine tool temperature control modes corresponds to a specified temperature range. The specified temperature range is preferably a temperature range in which the measured thermal extension value of the hollow screw is relatively small under the current temperature and humidity environment.

[0060] The sensor preferably adopts multiple types of sensors, such as contact sensors and non-contact sensors, among which the contact sensor is mainly arranged in the bearing and / or nut area of ​​the hollow screw; the non-contact sensor is mainly arranged on both sides of the rod body of the hollow screw, and the non-contact sensor can specifically be an infrared radiation temperature sensor.

[0061] S102: Using an enabled sensor to obtain the temperature of the liquid medium in the hollow screw, corresponding to the machine tool temperature control mode, the enabled sensor obtains the local temperature of the hollow screw in the corresponding area, and the local temperature can be used to characterize the temperature of the liquid medium. Alternatively, a contact sensor is used to directly obtain the temperature of the liquid medium in the hollow screw.

[0062] In this embodiment, the hollow screw includes a first area, a second area and a third area pre-divided according to heat generation and / or structural strength, wherein the first area may include the area where the hollow screw bearing is located; the second area may include the area where the screw and the nut are connected; the third area is other areas, that is, other areas other than the first area and the second area.

[0063] Corresponding to different machine tool temperature control modes, the temperature of the liquid medium of the hollow screw rod obtained by using the activated sensor can be specifically as follows:

[0064] (1) Acquire a sensing signal from a sensor disposed in the first region of the hollow screw in the low-temperature environment mode.

[0065] (2) Acquire sensing signals of sensors arranged in the first area and the second area of ​​the hollow screw in the normal temperature environment mode.

[0066] (3) Acquire sensing signals of sensors arranged in the first area, the second area, and the third area of ​​the hollow screw in the high-temperature environment mode.

[0067] S103: Determine whether the liquid medium temperature is within a preset temperature control range. If so, proceed to step S104. If not, return to step S102 to continue acquiring the liquid medium temperature, or terminate the process.

[0068] In this embodiment, the preset temperature control range may be a temperature range for controlling the temperature of the hollow screw, which is outside the ideal temperature range. The ideal temperature range is a temperature range that can ensure the optimal state of the hollow screw, and the ideal temperature range may be 20°C ± 2°C.

[0069] S104: Controlling the temperature control source to output a liquid medium for temperature control in a preset manner, wherein the preset manner at least includes controlling temperature change and / or controlling the flow rate of the liquid medium.

[0070] In this embodiment, controlling the temperature control source to output the liquid medium for temperature control in a preset manner may include:

[0071] (1) If the temperature of the liquid medium is within the preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is greater than the first preset value, the liquid medium flow rate is increased according to the difference between the temperature of the liquid medium and the preset temperature value. For example, if the preset temperature value is 20°C and the preset temperature control range is 20°C±2°C, the first preset value is 3. When the temperature of the liquid medium is 24°C, the temperature of the liquid medium is within the preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is 4, which is greater than the first preset value 3, the liquid medium flow rate can be controlled to increase according to the temperature difference 4 to accelerate cooling; when the temperature of the liquid medium is 16°C, the temperature of the liquid medium is within the preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is 4, which is greater than the first preset value 3, the liquid medium flow rate can be controlled to increase according to the temperature difference 4 to accelerate heating.

[0072] (2) If the temperature of the liquid medium is within the preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is greater than the second preset value, the temperature change of the liquid medium is controlled according to the difference between the temperature of the liquid medium and the preset temperature value. For example, when the preset temperature value is 20°C, and the preset temperature control range is 20°C±2°C, the second preset value is 5. When the temperature of the liquid medium is 28°C, the temperature of the liquid medium is within the preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is 8, which is greater than the second preset value 5, the temperature control source can be controlled to directly output a liquid medium with a lower temperature, such as 16°C, according to the temperature difference 8, to accelerate cooling; when the temperature of the liquid medium is 13°C, the temperature of the liquid medium is within the preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is 7, which is greater than the second preset value 5, the temperature control source can be controlled to directly output a liquid medium with a higher temperature, such as 23°C, according to the temperature difference 7, to accelerate heating.

[0073] Controlling the temperature change of the liquid medium based on the difference between the temperature of the liquid medium and a preset temperature value may specifically include: determining a proportional valve control parameter based on the difference between the temperature of the liquid medium and the preset temperature value; and then, controlling the mixing ratio of the liquid medium in the hollow structure of the hollow screw, which is respectively introduced from the first pipe and the second pipe, by the proportional valve based on the proportional valve control parameter, so as to change the temperature of the liquid medium. The liquid medium in the first pipe is a liquid medium at a first temperature, and the liquid medium in the second pipe is a liquid medium at a second temperature. The temperature of the first temperature liquid medium is less than the ideal temperature range of the hollow screw, and the temperature of the second temperature liquid medium is greater than the ideal temperature range of the hollow screw.

[0074] In this embodiment, if the liquid medium temperature is within a preset temperature control range and the difference between the liquid medium temperature and the preset temperature value is greater than a third preset value, the machine tool is controlled to shut down and a prompt message is output; the prompt message may include an audible sound, a flashing light, and / or a graphical display prompt message. Subsequently, the liquid medium temperature is controlled to change based on the difference between the liquid medium temperature and the preset temperature value.

[0075] The temperature control method provided in this embodiment obtains the sensing information of the corresponding sensor according to different machine tool temperature control modes to control the temperature control source to output the liquid medium used for temperature control, thereby adjusting the temperature of the hollow screw rod. It can adaptively and more accurately adjust the temperature of the hollow screw rod, which is beneficial to ensuring the processing accuracy of the machine tool.

[0076] In this embodiment, based on the environmental parameters, dynamic reference parameters can also be set as the target temperature range that the hollow screw needs to reach in the current environment. The target temperature range can enable the hollow screw to meet the ideal working state and / or the relatively ideal working state determined based on the control cost. Specifically, after obtaining the environmental parameters, a preset environmental temperature control table can be obtained through data query to determine the target temperature range of the hollow screw in the current environment. Thereafter, the temperature control source is controlled to output the liquid medium for temperature control in the aforementioned preset manner to cool the hollow screw to the target temperature range. Here, the environmental parameters preferably include ambient temperature and ambient humidity.

[0077] In this embodiment, corresponding to the aforementioned situation where the environmental parameters include ambient humidity, the controlling the temperature control source to output the liquid medium for temperature control in a preset manner may also specifically include: controlling the temperature control source to output the liquid medium for temperature control in a preset manner to adjust the hollow screw to the specified temperature range, so that the working temperature of the hollow screw is more matched with the current ambient temperature and ambient humidity, which is beneficial for the hollow screw to match the operating accuracy in the corresponding environment.

[0078] See also Figure 2 , is a flow chart of the temperature control method provided by the present invention under another embodiment. Similarly, the flow chart only schematically shows some steps for implementing the control of the machine tool. Therefore, some steps can be added or reduced and / or the order of some steps can be adjusted according to different application scenarios and environmental conditions.

[0079] Figure 2 The temperature control method of this embodiment may include the following steps:

[0080] S201: Determine the current machining accuracy level of the machine tool based on the machine tool machining data.

[0081] In this embodiment, the machine tool processing data may be the current processing operation data of the machine tool, such as processing action data, processing workpiece information data, and / or processing tool information data. Of course, it may also be processing planning data, such as processing path planning data, tool planning data, pre-processed workpiece data, pre-processed workpiece location data, and finished product information data. Here, the machine tool processing data is preferably processing planning data.

[0082] S202: Determine a preset temperature control range using the processing accuracy level.

[0083] In this embodiment, in view of the situation where the machine tool has different processing accuracy requirements when processing various workpieces, the processing accuracy is used to determine the corresponding preset temperature control range. For relatively low processing accuracy levels (relatively low accuracy requirements), a first preset temperature control range is set; for relatively high processing accuracy levels (relatively high accuracy requirements), a second preset temperature control range is set. The first preset temperature control range is larger than the second preset temperature control range, and there is an inclusion relationship between the two.

[0084] In a specific application example, 20° C. can be used as a reference temperature, 20° C.±6° C. can be used as a first preset temperature control range, and 20° C.±2° C. can be used as a second preset temperature control range.

[0085] S203: Determine, according to the temperature control mode of the machine tool, to enable a sensor corresponding to the temperature control mode of the machine tool.

[0086] S204: Obtain the temperature of the liquid medium in the hollow screw using the enabled sensor.

[0087] S205: Determine whether the temperature of the liquid medium is within the preset temperature control range.

[0088] S206: If the temperature of the liquid medium is within a preset temperature control range, controlling the temperature control source to output the liquid medium for temperature control in a preset manner, wherein the preset manner at least includes controlling temperature change and / or controlling liquid medium flow rate.

[0089] In this embodiment, the preset temperature control range is adaptively determined according to the processing accuracy of the machine tool to achieve different temperature controls according to different processing requirements. On the basis of being able to achieve the aforementioned adaptive and more precise adjustment of the temperature of the hollow screw to ensure the processing accuracy of the machine tool, it is also beneficial to save control resources.

[0090] See also Figure 3, a schematic diagram of the three-dimensional structure of a hollow screw assembly according to one embodiment of the present invention, comprises a hollow screw assembly 11, a nut 12, a bearing 13, a tail end 14, and a drive motor 15. The hollow screw assembly 11 has a hollow channel for the flow of a liquid medium. In accordance with the embodiment of the temperature control method according to the present invention, the first region is the area where the bearing 13 is located; the second region is the area where the nut 12 is located; and the third region comprises other areas, such as the area between the nut 12 and the bearing 13, and between the nut 12 and the tail end 14.

[0091] See also Figure 4 , exemplarily showing the functional modules of the temperature control device provided by the present invention, the temperature control device 100 is mainly used in a machine tool, which includes a hollow screw pair having a hollow screw. Figure 4 In the embodiment, the temperature control device 100 may include a determination module 101, an acquisition module 102 and a control module 103, wherein:

[0092] A determination module 101 is configured to determine, based on a machine tool temperature control mode, to enable a sensor corresponding to the machine tool temperature control mode;

[0093] An acquisition module 102 is configured to acquire the temperature of the liquid medium of the hollow screw using an enabled sensor;

[0094] The control module 103 is configured to control the temperature control source to output the liquid medium for temperature control in a preset manner when the temperature of the liquid medium is within a preset temperature control range. The preset manner at least includes controlling temperature change and / or controlling liquid medium flow.

[0095] Of course, it can be understood that the temperature control device 100 provided by the present invention may not be limited to the various functional modules mentioned above. According to different application scenarios and / or detection conditions, the corresponding functional modules may be appropriately added or reduced to implement the steps in the aforementioned temperature control method. For example, a determination module may be added, and the determination module is used to determine the sensing area on the column according to the height range of the processing plan, wherein the column is provided with at least a first position sensing area and a second position sensing area at different heights of the column.

[0096] The present invention further provides a machine tool, including a machine tool control system applying the aforementioned temperature control method, or including a machine tool control system having the aforementioned temperature control device.

[0097] In addition, the present invention also provides a computer, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the processor executes the computer program, the steps of the above-mentioned temperature control method are implemented, such as Figure 1 Steps S101 to S104 shown, Figure 2Alternatively, the processor implements the functions of the modules or units in the above-mentioned device embodiments when executing the computer program.

[0098] For example, a computer program may be divided into one or more modules / units, which are stored in a memory and executed by a processor to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in a terminal device.

[0099] The aforementioned processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the terminal device, connecting various parts of the entire terminal device using various interfaces and lines.

[0100] The aforementioned memory can be used to store computer programs and / or modules. The processor implements various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area. The program storage area can store an operating system, at least one application required for a function (such as an acquisition function, a control function, etc.), etc.; the data storage area can store data created based on the use of the terminal device (such as feature location data, sensing data, etc.). In addition, the memory can include high-speed random access memory and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0101] If the computer-integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the process in the above-mentioned temperature control method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can implement the steps of the above-mentioned temperature control method embodiment. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0102] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0103] In the several embodiments provided in this application, the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the functional module units described above is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0104] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0105] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0106] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program code.

[0107] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0108] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A temperature control method, applied to a machine tool, wherein the machine tool includes a hollow screw, the method comprising: Determine, according to the temperature control mode of the machine tool, to enable a sensor corresponding to the temperature control mode of the machine tool; Using the enabled sensor to obtain the temperature of the liquid medium of the hollow screw; If the temperature of the liquid medium is within a preset temperature control range, controlling the temperature control source to output the liquid medium for temperature control in a preset manner, wherein the preset manner at least includes controlling temperature change and / or controlling the flow rate of the liquid medium; The hollow screw includes a first area, a second area, and a third area pre-divided according to heat generation and / or structural strength; and obtaining the liquid medium temperature of the hollow screw using the activated sensor includes: Acquiring a sensing signal from a sensor disposed in the first region of the hollow screw in a low-temperature environment mode; Acquire sensing signals of sensors arranged in the first area and the second area of ​​the hollow screw in a normal temperature environment mode; Acquiring sensing signals of sensors arranged in the first area, the second area, and the third area of ​​the hollow screw in a high-temperature environment mode; The first area includes the area where the hollow screw bearing is located; the second area includes the area where the screw and the nut are connected; and the third area includes other areas other than the first area and the second area.

2. The temperature control method according to claim 1, wherein: The step of determining, according to the temperature control mode of the machine tool, to enable the sensor corresponding to the temperature control mode of the machine tool comprises: Acquiring environmental parameters, wherein the environmental parameters include at least ambient temperature; The machine tool temperature control mode is determined according to the environmental parameters, and the machine tool temperature control mode includes any two or more of a low temperature environment mode, a normal temperature environment mode, and a high temperature environment mode.

3. The temperature control method according to claim 2, wherein: The environmental parameters also include environmental humidity; determining a machine tool temperature control mode according to the environmental parameters, wherein the machine tool temperature control mode includes any two or more of a normal temperature and normal humidity environment mode, a low temperature and low humidity environment mode, a low temperature and high humidity environment mode, a high temperature and high humidity environment mode, a high temperature and low humidity environment mode, a normal temperature and high humidity environment mode, and a normal temperature and low humidity environment mode; Each of the machine tool temperature control modes corresponds to a specified temperature range; The controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner includes controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner to adjust the hollow screw to the specified temperature range.

4. The temperature control method according to claim 2, wherein: The method further comprises: Determining a target temperature range of the hollow screw rod under the current environment according to the environmental parameters; The controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner includes controlling the temperature adjustment source to output the liquid medium for temperature adjustment in a preset manner to adjust the hollow screw to the target temperature range.

5. The temperature control method according to claim 1, wherein: The method of controlling the temperature control source to output the liquid medium for temperature control in a preset manner includes: If the temperature of the liquid medium is within a preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is greater than a first preset value, then controlling to increase the flow rate of the liquid medium according to the difference between the temperature of the liquid medium and the preset temperature value; If the liquid medium temperature is within the preset temperature control range and the difference between the liquid medium temperature and the preset temperature value is greater than a second preset value, the liquid medium temperature change is controlled according to the difference between the liquid medium temperature and the preset temperature value.

6. The temperature control method according to claim 5, wherein: The controlling of the temperature change of the liquid medium according to the difference between the temperature of the liquid medium and the preset temperature value includes: Determining a proportional valve control parameter according to a difference between the liquid medium temperature and a preset temperature value; The proportional valve controls the mixing ratio of the liquid medium in the hollow structure respectively introduced into the hollow screw rod from the first pipe and the second pipe according to the proportional valve control parameter, so as to change the temperature of the liquid medium; The liquid medium in the first pipe is a first temperature liquid medium, and the liquid medium in the second pipe is a second temperature liquid medium. The temperature of the first temperature liquid medium is lower than the ideal temperature range of the hollow screw, and the temperature of the second temperature liquid medium is higher than the ideal temperature range of the hollow screw.

7. The temperature control method according to any one of claims 1 to 6, characterized in that: The preset method of controlling the temperature control source to output the liquid medium for temperature control includes: If the temperature of the liquid medium is within a preset temperature control range, and the difference between the temperature of the liquid medium and the preset temperature value is greater than a third preset value, the machine tool is controlled to stop and a prompt message is output; the prompt message includes sound, light flashing and / or graphic display prompt information; The temperature change of the liquid medium is controlled according to the difference between the temperature of the liquid medium and a preset temperature value.

8. A temperature control device, applied to a machine tool, wherein the machine tool comprises a hollow screw, characterized in that: The device comprises: A determination module, configured to determine, based on a machine tool temperature control mode, to enable a sensor corresponding to the machine tool temperature control mode; an acquisition module, for acquiring a temperature of a liquid medium of the hollow screw by utilizing an enabled sensor; The control module is used to control the temperature control source to output the liquid medium for temperature control in a preset manner when the temperature of the liquid medium is within a preset temperature control range. The preset manner at least includes controlling temperature change and / or controlling the flow rate of the liquid medium.

9. A machine tool, characterized in that: A machine tool control system comprising the temperature control method according to any one of claims 1 to 7, or a machine tool control system comprising the temperature control device according to claim 8.

10. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the temperature control method according to any one of claims 1 to 7 are implemented.

Images