Hard rail cooling control method and device, machine tool and readable storage medium

Abstract

The application discloses a hard rail cooling control method and device, a machine tool and a readable storage medium, and relates to the technical field of machine tools. The method comprises the following steps: acquiring temperature values of the hard rail seat and the hard rail connecting seat respectively; then, the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel are respectively controlled according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, and the correlation is at least based on the temperature value difference between the hard rail seat and the hard rail connecting seat. The application can realize adaptive cooling control of the hard rail and the component in contact with the hard rail.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tools, in particular to a hard rail cooling control method and device, a machine tool and a readable storage medium. BACKGROUND

[0002] In the actual operation process of a machine tool, the influence of thermal error generally accounts for a large proportion of error, which is caused by the gradual temperature rise of the machine tool in continuous operation.

[0003] As one of the heat sources of a machine tool, the thermal deformation caused by the friction heat of the hard rail has an adverse effect on the machining precision. At the same time, the existing hard rail is cooled by using a relatively fixed cooling liquid supply method, which cannot realize adaptive cooling. SUMMARY

[0004] The main purpose of the present application is to provide a hard rail cooling control method and device, a machine tool and a readable storage medium, which can realize adaptive cooling control according to the hard rail and the contact surface of the component in contact with the hard rail.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] In a first aspect, the present application provides a hard rail cooling control method applied to a machine tool, wherein the machine tool comprises a bed and a worktable arranged on the bed, a hard rail seat is arranged on the bed, a hard rail connecting seat is arranged on the side of the worktable facing the bed, the hard rail connecting seat is slidingly arranged on the hard rail seat, a cooling internal circulation channel is arranged in the seat body of the hard rail seat, and a liquid supply channel is arranged in the seat body of the hard rail connecting seat. The method comprises the following steps:

[0007] Respectively acquiring the temperature values of the hard rail seat and the hard rail connecting seat;

[0008] According to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, the first cooling liquid in the cooling internal circulation channel and the second cooling liquid in the liquid supply channel are respectively controlled, and the correlation is at least based on the temperature value difference between the hard rail seat and the hard rail connecting seat.

[0009] In an embodiment of the hard rail cooling control method, the hard rail seat comprises two hard rail sub-seats, at least one cooling internal circulation channel is arranged in each of the two hard rail sub-seats, a cooling and lubricating contact surface in sliding contact with the hard rail seat is arranged on the hard rail connecting seat, a liquid guide groove is arranged on the cooling and lubricating contact surface, the liquid supply channel provides the second cooling liquid for the liquid guide groove, and the second cooling liquid is a cooling and lubricating liquid.

[0010] The cooling control of the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat comprises:

[0011] If the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat is greater than a preset value, the larger one of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat is compared;

[0012] If one or more of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat exceeds the corresponding preset temperature control value, the one corresponding to the larger value is cooled to make the difference between the two less than the preset value.

[0013] In an embodiment of the hard rail cooling control method, after the comparison of the larger one of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, the method comprises:

[0014] judging the preset temperature interval to which the larger value belongs, the preset temperature interval comprising a single regulation temperature interval and a composite regulation temperature interval;

[0015] If the preset temperature interval to which the larger value belongs is the composite regulation temperature interval, the cooling control of the first cooling liquid flow rate of the cooling inner circulation channel is performed; the cooling control of the cooling lubricating liquid flow rate of the liquid supply channel is performed; the first cooling liquid supply temperature in the cooling inner circulation channel is a first temperature value, and the cooling lubricating liquid supply temperature in the liquid supply channel is a second temperature value.

[0016] In an embodiment of the hard rail cooling control method, the method further comprises:

[0017] If the larger value is a preset characteristic value in the composite regulation temperature interval, a preset valve group is used to provide the cooling inner circulation channel with first cooling liquid of a third temperature value, the third temperature value being less than the first temperature value and the second temperature value.

[0018] In an embodiment of the hard rail cooling control method, after judging the preset temperature interval of the larger value, the method comprises:

[0019] If the preset temperature interval to which the larger value belongs is the single regulation temperature interval, the cooling control of the cooling liquid flow rate in the corresponding channel is performed.

[0020] In an embodiment of the hard rail cooling control method, temperature sensors are arranged on the hard rail seat and the hard rail connecting seat; the method comprises:

[0021] The temperature distribution of the hard rail seat in the extension direction of the hard rail seat surface is obtained by using the temperature sensors.

[0022] respectively acquiring maximum temperature values of the hard rail seat and the hard rail connecting seat;

[0023] respectively controlling the first cooling liquid in the cooling inner circulation channel according to the correlation between the maximum temperature value of the hard rail seat and the maximum temperature value of the hard rail connecting seat;

[0024] If the temperature value on the side where the liquid inlet end of the cooling inner circulation channel is located is greater than the temperature value on the side where the liquid outlet end is located, or the difference between the temperature value on the side where the liquid inlet end is located and the temperature value on the side where the liquid outlet end is located is less than a preset difference value, the first cooling liquid flow of the cooling inner circulation channel is controlled to increase for cooling control.

[0025] In an embodiment of the hard rail cooling control method, after the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the supply channel are respectively controlled for cooling control according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, the method comprises:

[0026] If the temperature value on the side where the liquid inlet end of the cooling inner circulation channel is located is greater than the temperature value on the side where the liquid outlet end is located, or the difference between the temperature value on the side where the liquid inlet end is located and the temperature value on the side where the liquid outlet end is located is less than a preset difference value, a prompt information is output.

[0027] In a second aspect, the present application provides a hard rail cooling control device applied to a machine tool, the machine tool comprising a bed and a worktable arranged on the bed, a hard rail seat arranged on the bed, a hard rail connecting seat arranged on the side of the worktable facing the bed, the hard rail connecting seat being slidingly arranged on the hard rail seat; a cooling inner circulation channel arranged in the seat body of the hard rail seat; a supply channel arranged in the seat body of the hard rail connecting seat, the device comprising:

[0028] an acquisition module configured to acquire temperature values of the hard rail seat and the hard rail connecting seat respectively;

[0029] a control module configured to control the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the supply channel respectively according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, the correlation being based at least on the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat.

[0030] In a third aspect, the present application provides a machine tool comprising a cooling supply source, the cooling supply source comprising a first cooling liquid provider and a second cooling liquid provider, the first cooling liquid provider being configured to provide a first cooling liquid, and the second cooling liquid provider being configured to provide a second cooling liquid; and

[0031] a hard rail cooling control device as described above, or

[0032] A machine tool control system applying the hard rail cooling control method as described above.

[0033] In a fourth aspect, the present application further provides a readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the hard rail cooling control method as described above.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] The present application monitors the temperature between the hard rail seat and the hard rail connecting seat, and adaptively controls the first cooling liquid of the cooling inner circulation channel and the second cooling liquid of the liquid supply channel based on the temperature value correlation between the two, so that the two can be kept in a relatively stable temperature state for work, which is beneficial to ensure the machining precision. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a flow chart of the hard rail cooling control method provided by the present application in an embodiment;

[0037] Figure 2 is a schematic diagram of the setting position of the cooling inner circulation channel and the liquid supply channel in the machine tool provided by the present application;

[0038] Figure 3 is a flow chart of the hard rail cooling control method provided by the present application in another embodiment;

[0039] Figure 4 is a functional module diagram of the hard rail cooling control device provided by the present application.

[0040] Explanation of reference signs:

[0041] Machine tool 1; bed 11; hard rail seat 12; first hard rail sub-seat 121; cooling inner circulation channel 1211; second hard rail sub-seat 122; hard rail connecting seat 13; first liquid supply channel 131; second liquid supply channel 132;

[0042] Hard rail cooling control device 100; taking module 101; control module 102. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or a middle element can be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or a middle element can be present. When an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or a middle element can be present.

[0045] In addition, it should also be understood that all directional directions in the embodiments (such as up, down, left, right, middle, etc.) are only used to explain the relative positional relationship, motion condition, etc. between components in a certain specific posture (as shown in the figure), and if the specific posture changes, the directional directions will also change accordingly. The terms "first", "second", etc. are used to distinguish different structural components. These terms are only for the convenience of describing the simplified description of the present application and cannot be understood as a limitation on the present application.

[0046] The hard rail cooling control method provided by the present application is mainly applied to the machine tool control system of a machine tool. The machine tool can include a bed body and a worktable arranged on the bed body. A hard rail seat is arranged on the bed body, and a cooling internal circulation channel is arranged in the seat body of the hard rail seat. The side of the worktable facing the bed body is provided with a hard rail connecting seat, the hard rail connecting seat is slidingly arranged on the hard rail seat, and a liquid supply channel is arranged in the seat body of the hard rail connecting seat. The cooling internal circulation channel is used for flowing the first cooling liquid to cool the hard rail seat, and the liquid supply channel is used for flowing the second cooling liquid to cool the hard rail connecting seat.

[0047] More specifically, the hard rail seat can include two hard rail sub-seats, and each of the two hard rail sub-seats is provided with a hard rail surface. In addition, the machine tool can include a machine tool control system, and the machine tool control system can further include a hard rail cooling control device, which is mainly used to execute each step in the hard rail cooling control method. By controlling the cooling of the hard rail, the hard rail surface of the hard rail seat and the contact surface between the hard rail connecting seat and the hard rail surface can be kept in a more stable temperature state as expected as much as possible, which is beneficial to ensure the machining accuracy of the machine tool.

[0048] Referring to Figure 1 , the flowchart of the hard rail cooling control method provided by the present application in an embodiment, which only schematically shows the steps of cooling control of the hard rail seat and the hard rail connecting seat, so that part of the steps and / or the order of part of the steps can be added or adjusted according to different application scenarios and environmental conditions.

[0049] As Figure 1 shown, the hard rail cooling control method of the present embodiment can include the following steps:

[0050] S101: Obtain the temperature values of the hard rail seat and the hard rail connecting seat, respectively.

[0051] In this embodiment, temperature sensors can be arranged on the hard rail seat and the hard rail connecting seat to sense the heat generated when the hard rail seat and the hard rail connecting seat move relative to each other in real time. The cooling internal circulation channel is preferably a channel formed in the hard rail sub-seat.

[0052] S102: According to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, the first cooling liquid in the cooling internal circulation channel and the second cooling liquid in the liquid supply channel are respectively controlled, and the correlation is at least based on the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat.

[0053] By obtaining the temperature values of the hard rail seat and the hard rail connecting seat, and based on the temperature value correlation between the two, the first cooling liquid in the cooling internal circulation channel is adaptively controlled, and the second cooling liquid in the liquid supply channel is adaptively controlled, so that the two can be kept in a relatively stable temperature state for work, which is beneficial to ensure the machining precision.

[0054] In this embodiment, when the hard rail seat includes two hard rail sub-seats:

[0055] At least two cooling internal circulation channels can be provided in the two hard rail sub-seats; a cooling and lubricating contact surface in sliding contact with the hard rail seat is provided on the hard rail connecting seat, and a liquid guide groove is provided on the cooling and lubricating contact surface; the liquid supply channel provides the second cooling liquid for the liquid guide groove, and at this time the second cooling liquid is a cooling and lubricating liquid, so as to provide cooling for the hard rail connecting seat, and also provide sliding friction and lubrication and cooling between the hard rail connecting seat and the hard rail seat. The cooling and lubricating liquid can be polytetrafluoroethylene. For the structure of the hard rail seat and the hard rail connecting seat, as shown in Figure 2 The structure of the machine tool 1 bed 11 and the hard rail seat 12 and the hard rail connecting seat 13 provided on the bed 11 is shown, and the cooling internal circulation channel 1211 and the liquid supply channel (including the first liquid supply channel 131 and the second liquid supply channel 132) are shown.

[0056] The hard rail seat 12 is a dovetail structure, specifically, the hard rail seat 12 includes two hard rail sub-seats, namely a first hard rail sub-seat 121 and a second hard rail sub-seat 122, and both the two hard rail sub-seats include a horizontal seat surface Figure 2 and an inclined seat surface Figure 2The side inclined surface of the hard rail sub-base, the horizontal seat surface and the inclined seat surface can be flat surfaces in sliding contact with the hard rail connecting base 13, and the inclined angle of the inclined seat surface can be 75 degrees. The two inclined seat surfaces are located between the two hard rail sub-bases, thereby forming a dovetail groove structure. Two cooling internal circulation channels 1211 are arranged on the two hard rail sub-bases to cool the hard rail base 12.

[0057] The two cooling internal circulation channels 1211 are arranged close to the horizontal seat surface and the inclined seat surface, respectively, and more specifically, the two cooling internal circulation channels 1211 are arranged close to the horizontal seat surface and the inclined seat surface, respectively, to facilitate rapid cooling of the corresponding sliding friction contact surface and the entire hard rail sub-base.

[0058] The hard rail connecting base 13 is provided with a liquid supply channel, which can include a first liquid supply channel 131 arranged on the side of the inclined seat surface and a second liquid supply channel 132 arranged on the top side of the horizontal seat surface. The two liquid supply channels can provide and store cooling lubricating liquid for the cooling and lubricating contact surfaces of the hard rail connecting base 13 in contact with the horizontal seat surface and the inclined seat surface. Compared with the first cooling liquid in the cooling internal circulation channel 1211, which can directly enter the cooling circulation loop after heat exchange, the cooling lubricating liquid in the liquid supply channel flows to the outside through the liquid guide groove, is collected by the collector, and then enters the cooling circulation loop.

[0059] In the embodiment, corresponding connecting pipelines can be arranged at both ends of the cooling internal circulation channel to connect to the cooling liquid supply pipeline and the cooling liquid circulation pipeline. Of course, corresponding valves can also be arranged in the flow path of the connecting pipeline to control the flow and / or flow rate of the cooling liquid.

[0060] It can be understood that the cooling lubricating liquid can not only provide lubrication for the sliding friction between the hard rail base and the hard rail connecting base, but also cool the two, thereby reducing the heat generated by the sliding friction between the two.

[0061] It can be understood that a workbench structure can be directly arranged on the hard rail connecting base, or a rail structure can be further arranged, thereby forming a hard rail cross slide structure to support the workbench to move in the X-axis and Y-axis directions.

[0062] In the embodiment, the correlation can be based on the temperature value of a specific position of the hard rail base and the temperature value of a specific position of the hard rail connecting base, or based on the maximum temperature value or the average temperature value of the hard rail base and the maximum temperature value or the average temperature value of the hard rail connecting base.

[0063] The implementation mode of the cooling control can include controlling the flow rate, flow volume and / or temperature of the corresponding cooling medium (including cooling liquid and cooling lubricating liquid).

[0064] In this embodiment, by monitoring the temperature between the hard rail seat and the hard rail connecting seat, and based on the temperature value correlation between the two, the first cooling liquid in the cooling inner circulation channel is adaptively cooled and controlled, and the cooling lubricant in the liquid supply channel is adaptively cooled and controlled, so that the two can be kept in a relatively stable temperature state for operation, which is beneficial to ensure the machining precision.

[0065] In this embodiment, step S102: cooling control of the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat can include:

[0066] (1) If the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat is greater than a preset value, compare the larger value between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat.

[0067] (2) If one or more of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat exceeds the corresponding preset temperature control value, the one corresponding to the larger value is cooled and controlled to make the difference between the two less than the preset value, that is, the hard rail seat has a corresponding preset temperature control value, and the hard rail connecting seat also has a corresponding preset temperature control value. When one or both of the larger value and the smaller value of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat exceeds the corresponding preset temperature control value, the control is performed: if the temperature value of the hard rail seat is the larger one, the hard rail seat is cooled and controlled by controlling the flow rate, flow and / or temperature of the first cooling liquid in the cooling inner circulation channel; if the temperature value of the hard rail connecting seat is the larger one, the hard rail connecting seat is cooled and controlled by controlling the flow rate and flow of the cooling lubricant in the liquid supply channel. The preset temperature control value is a set value that needs to be actively cooled and controlled, that is, when the hard rail seat and the hard rail connecting seat are in a relatively normal temperature range, the first cooling liquid and / or the cooling lubricant (second cooling liquid) can be normally supplied, and when any one exceeds the corresponding preset temperature control value, the corresponding temperature control is performed.

[0068] By steps (1) and (2), the temperature value of the larger one is cooled and controlled when there is a large temperature difference, so that the temperature difference between the two satisfies the preset value. The preset value is the temperature value or interval value of the hard rail seat and the hard rail connecting seat in the ideal working state obtained through experiments and repeated measurements, which can be preferably [20, 23], unit ℃.

[0069] Afterwards, (3) a preset temperature interval to which the larger value belongs is determined, the preset temperature interval includes a single control temperature interval and a composite control temperature interval, wherein the single control temperature interval is to control the temperature of any one of the hard rail seat and the hard rail connecting seat; the composite control temperature interval is to control the temperature of the hard rail seat and the hard rail connecting seat respectively. Here, the preset temperature interval is the control temperature interval that needs to be cooled. It can be understood that the maximum value of the single control temperature interval is less than the minimum value of the composite control temperature interval.

[0070] (4) If the preset temperature interval to which the larger value belongs is the composite control temperature interval, the first cooling liquid flow rate of the cooling internal circulation channel is controlled, the cooling lubricant flow rate of the liquid supply channel is controlled, the first cooling liquid supply temperature in the cooling internal circulation channel is a first temperature value, and the cooling lubricant supply temperature in the liquid supply channel is a second temperature value. Preferably, if the materials of the hard rail seat and the hard rail connecting seat are similar or the same, the first temperature value and the second temperature value can be the same.

[0071] Of course, if the larger value is a preset characteristic value in the composite control temperature interval, a preset valve group can also be used to provide the cooling internal circulation channel with first cooling liquid of a third temperature value, which is less than the first temperature value and the second temperature value. Here, the preset characteristic value can be the maximum temperature value in the composite control temperature interval, or a temperature warning prompt value in the composite control temperature interval.

[0072] It can be understood that in the cooling supply source, the cooling supply source includes a first cooling liquid provider and a second cooling liquid provider, the first cooling liquid provider is used to provide first cooling liquid, and the second cooling liquid provider is used to provide second cooling liquid. Specifically, two or three first cooling liquid storage tanks can be provided to supply the first cooling liquid, and the temperature of the cooling liquid in each first cooling liquid storage tank is different. Similarly, two or three cooling lubricant storage tanks can be provided to supply cooling lubricant, and the temperature of the cooling lubricant in each cooling lubricant storage tank is different.

[0073] It can be understood that if the preset temperature interval to which the larger value belongs is the single control temperature interval, the cooling liquid flow rate in the corresponding channel is controlled.

[0074] Referring to Figure 3is a flow chart of the hard rail cooling control method in another embodiment provided by the present application. The difference between the present embodiment and the previous embodiment is that the present embodiment acquires the maximum temperature value by setting one or more temperature sensors and performs cooling control according to the temperature drop difference, so as to achieve the cooling effect. Similarly, the flow chart of the present embodiment only schematically shows the partial control steps of the machine tool, and thus part of the steps and / or the order of the steps can be added or adjusted according to different application scenarios and environmental conditions.

[0075] Figure 3 In the present embodiment, the hard rail cooling control method can include the following steps:

[0076] S201: acquiring the temperature distribution of the hard rail seat in the extending direction of the hard rail seat surface by using the temperature sensor.

[0077] S202: acquiring the maximum temperature value of the hard rail seat and the hard rail connecting seat respectively.

[0078] S203: performing cooling control on the first cooling liquid of the cooling inner circulation channel and the cooling lubricant of the liquid supply channel according to the correlation between the maximum temperature value of the hard rail seat and the maximum temperature value of the hard rail connecting seat, and the correlation is at least based on the temperature difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat.

[0079] S204: if the temperature difference between the temperature value on the side where the liquid inlet end of the cooling inner circulation channel is located and the temperature value on the side where the liquid outlet end is located is greater than the preset temperature drop difference value, increasing the flow of the first cooling liquid of the cooling inner circulation channel to perform cooling control. The preset temperature drop difference value can be determined based on the current heat extension parameter of the screw rod.

[0080] In the present embodiment, the cooling control is performed according to the temperature distribution of the hard rail seat in the extending direction of the hard rail and the temperature difference between the liquid inlet end and the liquid outlet end of the cooling inner circulation channel, so that the control is more accurate and the hard rail seat can be kept in a relatively stable temperature state.

[0081] Of course, as in the previous embodiments, in the present embodiment, while increasing the flow of the first cooling liquid of the cooling inner circulation channel to perform cooling control, the first cooling liquid with a lower temperature can also be output for cooling. In addition, the flow of the cooling lubricant of the liquid supply channel can also be increased, but the increase condition is that the position where the maximum temperature value on the hard rail seat is located (corresponding to the horizontal seat surface and the inclined seat surface) is located on the horizontal seat surface corresponding to the hard rail connecting seat, and the action of increasing the flow of the cooling lubricant is performed.

[0082] Referring to Figure 4The functional modules of the hard rail cooling control device provided by the present application are exemplarily shown. The hard rail cooling control device 100 is mainly applied to a machine tool to realize the hard rail cooling control method. The machine tool is provided with a hard rail seat, a hard rail connecting seat, a cooling supply source and the hard rail cooling control device 100 on a bed body. Figure 4 Corresponding to the hard rail cooling control method provided by the foregoing embodiments, the hard rail cooling control device 100 can include an acquisition module 101 and a control module 102, wherein:

[0083] The acquisition module 101 is configured to acquire temperature values of the hard rail seat and the hard rail connecting seat, respectively.

[0084] The control module 102 is configured to perform cooling control on the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, and the correlation is based on at least the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat.

[0085] Of course, it can be understood that the hard rail cooling control device 100 provided by the present application is not limited to the above-mentioned functional modules to realize the steps in the foregoing hard rail cooling control method, and the corresponding functional modules can be appropriately increased or decreased according to different application scenarios and / or detection conditions. For example, a comparison module is configured to compare the larger one of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat when the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat is greater than a preset value. At this time, the control module 102 is further configured to perform cooling control on the one corresponding to the larger value to make the difference between the two smaller than the preset value. For another example, a judgment module can be further included. When the hard rail connecting seat is provided with the foregoing liquid guide groove, the second cooling liquid in the liquid supply channel is cooling lubricating liquid. At this time, the judgment module can be configured to judge whether the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat is greater than a preset value, and judge the preset temperature interval to which the larger value belongs. At this time, the control module 102 is further configured to perform cooling control on the first cooling liquid flow rate of the cooling inner circulation channel when the preset temperature interval to which the larger value belongs is the composite regulation temperature interval; perform cooling control on the cooling lubricating liquid flow rate of the liquid supply channel; the cooling liquid supply temperature in the cooling inner circulation channel is a first temperature value, and the cooling lubricating liquid supply temperature in the liquid supply channel is a second temperature value.

[0086] The present application also provides a machine tool comprising the cooling supply source as described above, and in one case, the machine tool can further comprise the hard rail cooling control device as described above to adaptively control the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel, so as to support the operation between the two in a relatively stable temperature state, and facilitate to ensure the machining precision; in another case, the machine tool can further comprise the machine tool control system applying the hard rail cooling control method as described above.

[0087] In addition, the present application also provides a computer comprising a processor, a memory and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above various hard rail cooling control methods are implemented, such as Figure 1 the steps S101 to S102 shown in the above, Figure 3 the steps 201 to S204 shown in the above, etc. Alternatively, when the processor executes the computer program, the functions of the modules or units in the above various device embodiments are implemented.

[0088] For example, the computer program can be divided into one or more modules / units, one or more modules / units are stored in the memory and executed by the processor to complete the present application. The one or more modules / units described above can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program in the terminal device.

[0089] The processor described above can be a central processing unit (CPU), and can also be 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 can be a microprocessor or the processor can also be any conventional processor, etc. The processor is the control center of the terminal device, and connects all parts of the terminal device through various interfaces and lines.

[0090] The memory described above can be used to store computer programs and / or modules, and the processor realizes various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory, and calling data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application program required by a function (such as an acquisition function, a control function, etc.), etc.; and the data storage area can store data created according to the use of the terminal device (such as feature position data, sensing data, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, for example, a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0091] The modules / units of the computer integration, if realized in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on this understanding, all or part of the processes in the hard rail cooling control method described above can also be completed by a computer program instructing related hardware. The computer program can be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the hard rail cooling control method embodiment described above can be realized. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals and software distribution medium, etc. 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, the computer readable medium does not include electrical carrier signals and telecommunication signals.

[0092] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the system, device and unit described above can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0093] In several embodiments provided in the present application, the disclosed apparatus and method can be implemented in other manners. For example, the described apparatus embodiments are merely schematic. The division of the functional modules is merely logical function division. There can be another division manner in actual implementation. For example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or communication connection between modules can be indirect coupling or communication connection through some interface, device or module, and can be electrical, mechanical or other forms.

[0094] The modules illustrated as separated components can or can not be physically separated, and the components illustrated as modules can or can not be physical modules, i.e., can be located in one place or can be distributed to a plurality of network components. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments.

[0095] In addition, each functional module in each embodiment of the present application can be integrated in one processing unit, or each module can be physically present separately, or two or more modules can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software functional module.

[0096] If the integrated module is realized in the form of a software functional module and sold or used as an independent product, it 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 and includes 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 embodiments of the method of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program codes that can be stored in the medium.

[0097] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0098] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hard rail cooling control method applied to a machine tool, the machine tool comprising a bed and a worktable arranged on the bed, a hard rail seat being arranged on the bed, a hard rail connecting seat being arranged on a side of the worktable facing the bed, the hard rail connecting seat being slidingly arranged on the hard rail seat; characterized in that, A cooling inner circulation channel is arranged in the seat body of the hard rail seat, and a liquid supply channel is arranged in the seat body of the hard rail connecting seat, the cooling inner circulation channel is used for flowing the first cooling liquid to cool the hard rail seat, and the liquid supply channel is used for flowing the second cooling liquid to cool the hard rail connecting seat; The method comprises: Step S101: respectively acquiring temperature values of the hard rail seat and the hard rail connecting seat; Step S102: respectively controlling the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, the correlation being based on at least the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat; Step S102 comprises: If the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat is greater than a preset value, comparing the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat and determining the greater value of the two; If one or more of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat exceeds a corresponding preset temperature control value, performing cooling control on the one corresponding to the greater value to make the difference between the two less than the preset value.

2. The hard rail cooling control method of claim 1, wherein, The hard rail seat comprises two hard rail sub-seats; At least one cooling inner circulation channel is arranged in each of the two hard rail sub-seats, a cooling and lubricating contact surface in sliding contact with the hard rail seat is arranged on the hard rail connecting seat, a liquid guide groove is arranged on the cooling and lubricating contact surface, the liquid supply channel provides the second cooling liquid for the liquid guide groove, and the second cooling liquid is a cooling and lubricating liquid.

3. The hard rail cooling control method of claim 2, wherein, The method further comprises: judging a preset temperature interval to which the greater value belongs, the preset temperature interval comprising a single regulation temperature interval and a composite regulation temperature interval; If the preset temperature interval to which the greater value belongs is the composite regulation temperature interval, performing cooling control on the flow rate of the first cooling liquid in the cooling inner circulation channel and on the flow rate of the cooling and lubricating liquid in the liquid supply channel, the supply temperature of the first cooling liquid in the cooling inner circulation channel being a first temperature value, and the supply temperature of the cooling and lubricating liquid in the liquid supply channel being a second temperature value.

4. The hard rail cooling control method of claim 3, wherein, The method further comprises: If the greater value is a preset characteristic value in the composite regulation temperature interval, using a preset valve group to provide the first cooling liquid of a third temperature value for the cooling inner circulation channel, the third temperature value being less than the first temperature value and the second temperature value.

5. The hard rail cooling control method of claim 3, wherein, If the preset temperature interval to which the greater value belongs is the single regulation temperature interval, performing cooling control on the flow rate of the cooling liquid in the corresponding channel.

6. A hard rail cooling control device applied to a machine tool, the machine tool comprising a bed and a worktable arranged on the bed, a hard rail seat is arranged on the bed, a hard rail connecting seat is arranged on the side of the worktable facing the bed, and the hard rail connecting seat is slidingly arranged on the hard rail seat; characterized in that, A cooling inner circulation channel is arranged in the seat body of the hard rail seat, and a liquid supply channel is arranged in the seat body of the hard rail connecting seat, the cooling inner circulation channel is used for flowing the first cooling liquid to cool the hard rail seat, and the liquid supply channel is used for flowing the second cooling liquid to cool the hard rail connecting seat; The device comprises: an acquisition module configured to respectively acquire temperature values of the hard rail seat and the hard rail connecting seat; The control module is configured to perform cooling control on the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat, the correlation being based on at least the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat; wherein the cooling control on the first cooling liquid in the cooling inner circulation channel and the second cooling liquid in the liquid supply channel according to the correlation between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat comprises: if the difference between the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat is greater than a preset value, comparing the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat and determining the larger one of the two; if one or more of the temperature value of the hard rail seat and the temperature value of the hard rail connecting seat exceeds a corresponding preset temperature control value, performing cooling control on the one corresponding to the larger one so that the difference between the two is less than the preset value.

7. A machine tool, characterized by The machine tool control system comprises a cooling supply source, the cooling supply source comprising a first cooling liquid provider and a second cooling liquid provider, the first cooling liquid provider being configured to provide first cooling liquid, and the second cooling liquid provider being configured to provide second cooling liquid; and a machine tool control system applying the hard rail cooling control method according to any one of claims 1 to 5.

8. A readable storage medium, having stored thereon a computer program, characterized in that: The computer program is configured to be executed by a processor to implement the hard rail cooling control method according to any one of claims 1 to 5.

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