Machine tool constant temperature system and operation method thereof

Abstract

The invention discloses a machine tool constant temperature system which is characterized in that the machine tool constant temperature system comprises a machine tool, a plurality of temperature sensing units and a plurality of heating units, and the temperature sensing units are installed on the machine tool in a scattered mode and used for sensing the temperature of the machine tool. The multiple heating units are installed on the machine tool in a scattered mode and used for heating the machine tool. The control unit is connected with the temperature sensing unit and the heating units and used for receiving temperature signals sensed by the temperature sensing unit and controlling the multiple heating units to heat the machine tool to the constant temperature according to the temperature signals.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control machine tools, in particular to a machine tool constant temperature system and a running method thereof. BACKGROUND

[0002] Machine tools are generally made of steel or other metal materials. The machine tools have different deformations at different temperatures, and the instability of the deformations affects the machining accuracy. For example, after the length, width and parallelism of the guide rail are deformed, the width will change, thereby affecting the operation.

[0003] In the prior art, the machine tool is installed in a constant temperature workshop. The stable constant in the constant temperature workshop reduces the deformation of the machine tool to a certain extent. However, the constant temperature workshop has a large space, and a high-power air conditioner, a high-precision temperature control system and a heat preservation material are needed. In addition, a special air conditioner and a temperature control instrument need to be matched to realize the pid temperature control strategy. For a high-requirement constant temperature environment, such as a scene requiring a temperature control error of 1℃, the heating and cooling capacity of the air conditioner needs to be very strong to achieve rapid adjustment. In addition, the constant temperature workshop cannot be closed at will. Once it is closed, it takes a long time to establish the constant temperature environment. For machine tool equipment, once the constant temperature system is closed, irreversible plastic deformation may be caused, which means that once the constant temperature workshop is configured, it needs to be opened all year round, and the operation cost is very high, which can reach hundreds of thousands or even millions of yuan per year. SUMMARY

[0004] The purpose of the present application is to provide a machine tool constant temperature system to solve the problems of the prior art.

[0005] To solve the above technical problems, the embodiment of the present application provides a machine tool constant temperature system, comprising:

[0006] a machine tool;

[0007] a plurality of temperature sensing units, the plurality of temperature sensing units are dispersedly installed on the machine tool, and are used for sensing the temperature of the machine tool;

[0008] a plurality of heating units, the plurality of heating units are dispersedly installed on the machine tool, and are used for heating the machine tool;

[0009] a control unit, the control unit is connected with the temperature sensing unit and the heating unit, is used for receiving the temperature signal sensed by the temperature sensing unit, and controls the plurality of heating units to heat the machine tool to a constant temperature according to the temperature signal.

[0010] In one embodiment, the machine tool is assembled by a plurality of parts,

[0011] the plurality of temperature sensing units are installed on the plurality of parts and sense the temperature of the plurality of parts.

[0012] The plurality of heating units are installed on the plurality of parts.

[0013] The control unit controls the plurality of heating units to heat the plurality of parts to a constant temperature.

[0014] In one embodiment, the plurality of parts are made of different metal materials.

[0015] The control unit controls the plurality of heating units to heat the plurality of parts to different constant temperatures.

[0016] In one embodiment, each of the plurality of parts is installed with a plurality of temperature sensing units and a plurality of heating units.

[0017] In one embodiment, one of the plurality of parts is a guide rail.

[0018] The machine tool constant temperature system further comprises a motor and a power sensor, the motor is connected with the sliding block and can drive the sliding block to slide on the guide rail.

[0019] The power sensor is installed in the motor for detecting the power signal of the motor.

[0020] The control unit is connected with the power sensor for receiving the power signal of the power sensor and determining the deformation of the guide rail according to the power signal.

[0021] In one embodiment, the plurality of temperature sensing units and the plurality of heating units are arranged along the length direction of the guide rail.

[0022] In one embodiment, the machine tool constant temperature system further comprises a plurality of strain gauge sensors, the plurality of strain gauge sensors are installed on the machine tool and connected with the control unit, and the strain gauge sensors are used for detecting the deformation of the machine tool and transmitting the detected deformation signal to the control unit.

[0023] In one embodiment, the heating unit comprises a PTC heater.

[0024] The present application also relates to a running method of a machine tool constant temperature system, according to the machine tool constant temperature system, comprising the following steps:

[0025] S1, the plurality of temperature sensing units collect the temperature signal of the machine tool and transmit the temperature signal to the control unit.

[0026] S2, the control unit controls the heating unit to heat the machine tool to a constant temperature according to the temperature signal.

[0027] In one embodiment, the machine tool constant temperature system further comprises a plurality of strain gauges sensors, and the plurality of strain gauges sensors are installed on the machine tool.

[0028] The control unit is connected with the strain gauges sensors, and is configured to receive the deformation signals of the strain gauges sensors and determine the deformation of the machine tool according to the deformation signals.

[0029] The steps S1-S2 are repeated multiple times, or before the step S1 starts, the machine tool constant temperature system further comprises a step of collecting the deformation signals collected by the plurality of strain gauges sensors and determining the constant temperature required by the machine tool.

[0030] In one embodiment, the machine tool comprises a guide rail and a sliding block located on the guide rail.

[0031] The machine tool constant temperature system further comprises:

[0032] A motor, which is connected with the sliding block and can drive the sliding block to slide on the guide rail.

[0033] A power sensor, which is installed in the motor and is configured to detect the power signal of the motor.

[0034] The control unit is connected with the power sensor, and is configured to receive the power signal of the power sensor and determine the deformation of the guide rail according to the power signal.

[0035] The steps S1-S2 are repeated multiple times, or before the step S1 starts, the machine tool constant temperature system further comprises a step of collecting the power signals collected by the plurality of power sensors and determining the constant temperature required by the guide rail. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 And Figure 2 FIG. 1 is a perspective view of a machine tool constant temperature system according to one embodiment of the present application.

[0037] FIG. 1 is a perspective view of a machine tool constant temperature system according to one embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that in the embodiments of the present application, many technical details are proposed in order to make the readers better understand the present application. However, even without these technical details and based on various changes and modifications of the following embodiments, the technical solutions claimed in the claims of the present application can be realized.

[0039] The words "comprise," "comprising," "include," "including," and "includes" when used in this specification and in the following claims are intended to specify the presence of stated features, integers, actions, components, or steps, but they do not preclude the presence or addition of one or more other features, integers, actions, components, steps, or groups thereof.

[0040] The objectives, features and advantages of the present application will be better understood from the following detailed description taken in conjunction with the accompanying drawings wherein:

[0041] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0042] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the content clearly dictates otherwise.

[0043] In the following description, for purposes of clarity, directional terms are used, such as forward, rearward, left, right, outer, inner, outwardly, inwardly, above, below, etc., to describe the present application. However, it is to be understood that the application can assume various alternative orientations, except where expressly omitted.

[0044] The present application relates to a machine tool 1 constant temperature system 100, which comprises a machine tool 1, a plurality of temperature sensing units 2, a plurality of heating units 3 and a control unit, wherein the plurality of temperature sensing units 2 are installed on the machine tool 1 to sense the temperature of the machine tool 1, and the plurality of heating units 3 are also installed on the machine tool 1 to heat the machine tool 1. The control unit is connected with the temperature sensing units 2 and the heating units 3, and can receive the temperature signal sensed by the temperature sensing units 2 and control the plurality of heating units 3 to heat the machine tool 1 to a constant temperature according to the temperature signal.

[0045] The machine tool 1 is generally made of steel or other metal materials, and the machine tool 1 has different deformations at different temperatures, and the instability of the deformation will affect the processing accuracy. For example, after the guide rail 11 is found to be deformed, the width of the guide rail 11 will change, thereby affecting the operation.

[0046] In the prior art, the machine tool 1 is installed in a constant temperature workshop, and the stable constant in the constant temperature workshop reduces the deformation of the machine tool 1 to a certain extent. However, the constant temperature workshop has a large space, and needs a high-power air conditioner, a high-precision temperature control system and a heat preservation material, and needs a special air conditioner to cooperate with a temperature control instrument to realize a pid temperature control strategy. For a high requirement constant temperature environment, such as a scene requiring a temperature control error of 1 DEG C, the heating and cooling capacity of the air conditioner needs to be very strong to realize rapid adjustment. In addition, the constant temperature system cannot be turned off at will after being turned on, and once it is turned off, a long time is needed to establish the constant temperature environment. For the machine tool 1 device, once the constant temperature system is turned off, irreversible plastic deformation may be caused, which means that once the constant temperature workshop is configured, it needs to be turned on all the year round, and the operation cost is very high, which can reach hundreds of thousands or even millions of yuan per year, and resources are wasted.

[0047] If subsequent equipment needs to be added or the layout needs to be changed, the constant temperature workshop needs to be reconstructed and expanded, which is high in cost and large in construction amount. Moreover, the constant temperature workshop has only a single temperature strategy for all parts, and cannot cope with the constant temperature demand of easy heating or multiple temperature zones.

[0048] The traditional mindset equates the constant temperature system and the constant temperature of the constant temperature workshop. The most important purpose of the constant temperature system is to keep the machine tool 1 from deforming, and keep the machine tool 1 at a certain constant temperature, rather than keeping the human body at a comfortable temperature. The constant temperature system does not mean that the environment temperature needs to be changed to keep the equipment constant temperature. In fact, the environment temperature can be ignored to keep the equipment temperature constant. Based on this idea, the traditional temperature control strategy is modified, a plurality of temperature sensing units 2 and a plurality of heating units 3 are installed on the machine tool 1, the plurality of temperature sensing units 2 sense the temperature of the machine tool 1, and the plurality of heating units 3 heat the machine tool 1, so that the machine tool 1 is kept at a constant temperature, the deformation is stable, and the machine tool 1 operation is not affected. Moreover, the cost is low, the switch is flexible, and resource waste is reduced.

[0049] The present application changes the traditional constant temperature bottom logic, and makes the machine tool 1 have a body temperature like a human body by using advanced technology, realizes high-precision constant temperature by the body temperature system itself, can adapt to various environment temperatures, so as to realize higher level and higher precision constant temperature, and further eliminate thermal deformation error and improve the precision of the machine tool 1. The constant temperature adopts a working temperature higher than the natural temperature, such as about 45 DEG C. The natural indoor temperature almost cannot reach this temperature, so that the active constant temperature system of the present application only needs to pay attention to heating, and does not need to pay attention to cooling, and the system structure is simplified.

[0050] The machine tool 1 is assembled by a plurality of parts, such as Figure 1 and Figure 2As shown, the plurality of parts respectively include, but are not limited to, a main structure, a power component, a transmission component, and a machining component. The main structure can include, but is not limited to, a bed, a base 13, a column 14, and a crossbeam. The power component includes, but is not limited to, a motor, a hydraulic device, or a pneumatic device. The transmission component includes, but is not limited to, a guide rail 11, a rack and pinion 12, a lead screw, etc. The machining component includes, but is not limited to, a tool or a clamping device, etc. It should be understood that different machine tools 1 have different main structures, power components, transmission components, and machining components.

[0051] A plurality of temperature sensing units 2 are respectively installed on the plurality of parts, for example, a plurality of temperature sensing units 2 are respectively installed on each main structure, power component, transmission component, and machining component, for sensing the temperature of each part. The specific implementation of the temperature sensing unit is not limited, and it can be capable of multi-position sensing the temperature of different positions of the machine tool 1.

[0052] The heating unit 3 can adopt a PTC heater, and the temperature sensing unit 2 can adopt a temperature sensor. The specific manner in which the PTC heater and the temperature sensor are connected to the machine tool 1 is not limited.

[0053] In addition, a plurality of heating units 3 are also respectively installed on the plurality of parts, for example, a plurality of heating units 3 are respectively installed on each main structure, power component, transmission component, and machining component, for sensing the temperature of each part. The specific implementation of the heating unit is not limited, and it is preferred to be adjacent to the plurality of temperature sensing units 2, and it can be capable of all-around heating of the machine tool 1.

[0054] The machine tool 1 generally adopts a steel material, and the thermal expansion coefficient of steel is about 12 μm / m·℃. For a large machine tool 1, the change in temperature has a great influence on its running state and precision. The most intuitive influence is on the X-axis. If the ambient temperature of a 10-meter X-axis machine tool 1 changes by 1°, the X-axis will be about 0.15 mm longer, which is unacceptable for high-precision machine tools 1. In addition to causing errors, temperature changes can also cause a decrease in the parallelism of the guide rail 11, leading to a rough operation of the machine tool 1. There is a lot of stress between the slider and the guide rail 11 during operation, causing additional load on the motor, and also accelerating the wear of the guide rail 11. These unpredictable loads can cause the machine tool 1 motor pid model to fail, causing shaking or precision reduction, and a series of problems. Therefore, it is crucial to keep the temperature of the machine tool 1 constant through technical means.

[0055] If the same steel material is used in multiple parts, the control unit can control the heating unit 3 to raise each part to different constant temperatures according to the stress condition of each part. Generally, part of the multiple parts uses the same steel material, and the other part uses different steel materials. The heating unit 3 can be controlled to heat different steel materials to different constant temperatures according to the different materials of the steel materials. Different parts use different steel materials and set different constant temperatures to control the entire machine tool 1 to be in the same constant deformation, so that the entire machine tool 1 is in a stable state.

[0056] Each part is respectively installed with multiple stable induction units and multiple heating units 3 to form a temperature zone, and multiple parts form multiple temperature zones to keep the machine tool 1 in multiple temperature zones. The temperature is constant, and at the same time, different parts have different temperatures. A large number of distributed heating temperature zones are used, and the temperature zones are distributed throughout the bed of the machine tool 1 to accurately control the temperature of the machine tool 1 hardware in multiple temperature zones.

[0057] If the temperature zone is controlled by a control unit, the control unit communicates with the upper system using an industrial bus to ensure that it can collect real-time temperature, set temperature, voltage and current, abnormal alarm signal and other information of each temperature zone, and at the same time, it can remotely control the temperature of each temperature zone to achieve more intelligent management.

[0058] Using multiple temperature zone control and the thermal expansion coefficient of steel to compensate for machining and assembly errors, for parts that deviate below the error, the temperature of the region can be increased to make the region longer, compensate for the deviation value, and control the error within the design range. For parts that deviate above the error, the temperature of the region can be reduced to reduce the expansion amount, and ultimately make the error enter the design range. In summary, by adjusting the temperature of each temperature zone and keeping it constant, the thermal expansion of each part of the machine tool 1 is controlled, and the machine tool 1 has self-constant temperature, resists environmental temperature changes, and can correct manufacturing defects, so that the machine tool 1 can achieve higher precision than in the traditional constant temperature workshop scene.

[0059] In addition, a slide block is installed in the guide rail 11, the slide block is connected with a motor, and the motor can drive the slide block to slide on the guide rail 11. A power sensor is installed in the motor, and the power sensor is used to detect the power signal of the motor.

[0060] The control unit is connected with the power sensor, used to receive the power signal of the power sensor, and judge the deformation of the guide rail 11 according to the power signal.

[0061] The motor drives the sliding block to slide on the guide rail 11, multiple power data are input into the artificial intelligence according to the inductive power data of the power sensor, the most suitable temperature zone parameter of the equipment is automatically derived through self-tuning of the artificial intelligence, and the parameter can be automatically updated according to the wear condition of the machine tool 1 over time, the service life of the machine tool 1 is prolonged, and the time efficiency of keeping the machine tool 1 in a high-precision state is prolonged.

[0062] That is, because the deformation of the guide rail 11 is different at different temperatures, the parallelism is different, the resistance to the sliding block is different, and the power of the motor is different, multiple power data of the motor are detected to determine the constant temperature most suitable for the guide rail 11. The artificial intelligence can use Python or other platforms, which is not limited. Running the artificial intelligence aims to automatically calculate the relationship model between the temperature and the deformation amount of the machine tool 1 and the accuracy of the machine tool 1 through long-term running data.

[0063] Of course, the current value of the motor can also be collected to judge the deformation amount of the guide rail 11.

[0064] The guide rail 11 generally has a certain length, and multiple temperature sensing units 2 and multiple heating units 3 are arranged along the length direction of the guide rail 11, preferably along the length direction of the guide rail 11. The power data of the motor can accurately detect the deformation of the guide rail 11, and control the heating unit 3 to heat the guide rail 11 to a stable state.

[0065] Multiple strain gauge sensors can be installed on other parts of the machine tool 1, and the multiple strain gauge sensors are connected with the control unit.

[0066] The deformation signals of the multiple strain gauge sensors can be input into the artificial intelligence, and the most suitable constant temperature parameter of the part is automatically derived through self-tuning of the artificial intelligence.

[0067] The application also relates to a running method of the machine tool 1 constant temperature system 100, which comprises the following steps:

[0068] S1, multiple temperature sensing units 2 collect temperature signals of the machine tool 1 and transmit the temperature signals to the control unit;

[0069] S2, the control unit controls the heating unit 3 to heat the machine tool 1 to a constant temperature according to the temperature signals.

[0070] Further, the machine tool constant temperature system further comprises multiple strain gauge sensors, and the multiple strain gauge sensors are installed on the machine tool.

[0071] The control unit is connected with the strain gauge sensors and is used for receiving deformation signals of the strain gauge sensors and judging the deformation of the machine tool according to the deformation signals.

[0072] Steps S1-S2 are repeated multiple times or before step S1 starts, a step of collecting deformation signals collected by multiple strain sensors is further included to determine the constant temperature required by the machine tool.

[0073] Optionally, the machine tool comprises a guide rail and a sliding block located on the guide rail.

[0074] The machine tool constant temperature system further comprises a motor and a power sensor, the motor is connected with the sliding block and can drive the sliding block to slide on the guide rail, and the power sensor is installed in the motor to detect a power signal of the motor.

[0075] The control unit is connected with the power sensor to receive the power signal of the power sensor and determine the deformation of the guide rail according to the power signal.

[0076] Steps S1-S2 are repeated multiple times or before step S1 starts, a step of collecting deformation signals collected by multiple strain sensors is further included to determine the constant temperature required by the machine tool.

[0077] Preferably, the machine tool 1 comprises a guide rail 11 and a sliding block located on the guide rail 11. The machine tool 1 constant temperature system 100 further comprises a motor, a power sensor, and multiple strain sensors, the motor is connected with the sliding block and can drive the sliding block to slide on the guide rail 11, the power sensor is installed in the motor to detect a power signal of the motor. Multiple strain sensors are installed on other parts of the machine tool 1. The control unit is connected with the power sensor and the strain sensors to receive the power signal of the power sensor and the deformation signal of the strain sensors, and determine the deformation of the machine tool 1 according to the power signal and the deformation signal.

[0078] Before step S1 starts, collect deformation signals collected by multiple strain sensors and power signals detected by multiple power sensors, and input these signals into artificial intelligence to determine the constant temperature required by the machine tool 1, that is, use the deformation signals of different parts of the machine tool 1 at different temperatures collected by the strain sensors, or determine the constant temperature of the guide rail 11 according to the power signal of the power sensor in the motor, the power signal of the power sensor determines the deformation and constant temperature of the guide rail, and the other parts use the strain sensor to sense. Different parts of the machine tool 1 have different constant temperatures, and the control unit controls the heating unit 3 to heat different parts of the machine tool 1 to different constant temperatures according to the real-time temperature of different parts of the machine tool 1 sensed by the temperature sensing unit 2.

[0079] It should be understood that the strain gauge sensor can also be arranged on the guide rail 11, that is, a plurality of strain gauge sensors are arranged on the machine tool 1 to sense the strain of different parts of the machine tool 1 at different temperatures, and then determine the constant temperature of different parts.

[0080] Preferably, after steps S1-S2 are repeated multiple times, the method further comprises the steps of: collecting the deformation signals collected by the plurality of strain gauge sensors and the power signals detected by the plurality of sensors, inputting the plurality of deformation signals and the plurality of power signals into artificial intelligence, and determining the constant temperature required by the machine tool 1 by using the artificial intelligence. That is to say, after steps S1 and S2 are repeated a certain number of times or for a certain period of time, the constant temperature of different parts of the machine tool 1 needs to be detected in real time. Because the machine tool 1 is constantly aging, the constant temperature that needs to be set may change, so real-time monitoring is required.

[0081] For errors generated in the manufacturing and assembly process, different temperature strategies can be used to fully utilize the thermal deformation characteristics of the bed body material, and to compensate for manufacturing and assembly errors by using temperature differences. Such errors are difficult to solve under a single temperature constant temperature condition. Using the technology of the present application, different parts can be kept at different constant temperatures. For parts that are not long enough, the temperature can be increased to make them expand to the target size. For parts that are oversized, the temperature can be reduced to make them shrink to the target size.

[0082] In summary, in addition to keeping the constant and stable temperature of each part of the machine tool 1 by itself to achieve the purpose of keeping the constant accuracy, the present application can also adjust the expansion and contraction amount of different parts by applying different temperatures to different parts according to the error situation, so as to eliminate the errors generated in the manufacturing process of different parts, and make the machine tool 1 closer to the theoretical design accuracy. The machine tool 1 can control its own body temperature, use the body temperature as a variable, and use strain gauge sensors and other micro-motion measurement means to construct a deformation control model, so that the machine tool 1 can actively control the deformation amount to achieve higher accuracy. The machine tool 1 can adjust the size of the core part in a small range by adjusting the temperature of the core part, which is beneficial to eliminate the internal stress of the machine tool 1, compensate for the machining and assembly errors, and make the machine tool 1 achieve higher accuracy.

[0083] The preferred embodiments of the present application have been described in detail above, but it should be understood that aspects of the embodiments can be modified to employ aspects, features and concepts of various patents, applications and publications to provide additional embodiments if desired.

[0084] In view of the above detailed description, these and other changes can be made to the embodiments. Generally, the used terms in the claims are not to be construed as limiting to the specific embodiments disclosed in the specification and claims, but rather, are to be understood to include all possible embodiments along with the full range of equivalents to which such claims are entitled

[0085] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present application, and various changes can be made in form and details in practical application without departing from the spirit and scope of the present application.

Claims

1. A machine tool thermostatic system, characterized by, The machine tool comprises: a machine tool; a plurality of temperature sensing units, which are installed on the machine tool and used for sensing the temperature of the machine tool; a plurality of heating units, which are installed on the machine tool and used for heating the machine tool; a control unit, which is connected with the temperature sensing units and the heating units, used for receiving the temperature signals sensed by the temperature sensing units and controlling the heating units to heat the machine tool to a constant temperature according to the temperature signals.

2. The machine tool thermostatic system according to claim 1, characterized in that, The machine tool is assembled by a plurality of parts, the temperature sensing units are installed on the parts and used for sensing the temperature of the parts; the heating units are installed on the parts; the control unit controls the heating units to heat the parts to a constant temperature.

3. The machine tool thermostatic system according to claim 2, characterized in that, The parts are made of different metal materials; the control unit controls the heating units to heat the parts to different constant temperatures.

4. The machine tool thermostatic system according to claim 2, wherein Each part is installed with the temperature sensing units and the heating units.

5. The machine tool thermostatic system according to claim 2, wherein One of the parts is a guide rail; The machine tool constant temperature system further comprises a motor and a power sensor, the motor is connected with the sliding block and can drive the sliding block to slide on the guide rail; the power sensor is installed in the motor and used for detecting the power signal of the motor; the control unit is connected with the power sensor and used for receiving the power signal of the power sensor and judging the deformation of the guide rail according to the power signal.

6. The machine tool thermostatic system according to claim 5, wherein The temperature sensing units and the heating units are arranged along the length direction of the guide rail.

7. The machine tool thermostatic system of claim 1, wherein The machine tool constant temperature system further comprises a plurality of strain gauges, which are installed on the machine tool and connected with the control unit, and are used for detecting the deformation of the machine tool and transmitting the detected deformation signal to the control unit.

8. The machine tool thermostatic system of claim 1, wherein, The heating unit comprises a PTC heater.

9. A method of operating a machine tool thermostatic system according to claim 1, characterised in that, The method comprises the following steps: S1, the temperature sensing units collect the temperature signals of the machine tool and transmit the temperature signals to the control unit; S2, the control unit controls the heating units to heat the machine tool to a constant temperature according to the temperature signals.

10. The method of claim 9, wherein the temperature of the machine tool is maintained at a constant temperature by controlling the temperature of the coolant supplied to the machine tool. The machine tool constant temperature system further comprises a plurality of strain gauges, which are installed on the machine tool; the control unit is connected with the strain gauges and used for receiving the deformation signals of the strain gauges and judging the deformation of the machine tool according to the deformation signals; the steps S1-S2 are repeated for multiple times or before the step S1, the method further comprises the step of collecting the deformation signals collected by the strain gauges and judging the constant temperature required by the machine tool.

11. The method of operating a machine tool thermostatic system according to claim 9, wherein, The machine tool comprises a guide rail and a sliding block on the guide rail; The machine tool constant temperature system further comprises: a motor, which is connected with the sliding block and can drive the sliding block to slide on the guide rail; a power sensor, which is installed in the motor and used for detecting the power signal of the motor. The control unit is connected with the power sensor, used for receiving the power signal of the power sensor, and deforming the guide rail according to the power signal; The steps S1-S2 are repeated for multiple times or before the step S1 starts, the method further includes the steps that: collecting the power signals collected by the multiple power sensors, and determining the constant temperature required by the guide rail.

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