A high-precision intelligent temperature-controlled high-speed ball screw pair

Abstract

The present application provides a high-precision intelligent temperature-controlled high-speed ball screw pair, the screw pair includes a ball screw shaft, the interior of the ball screw shaft has a cavity, the outer wall and the inner wall of the ball screw shaft are both spiral groove structures; a screw shaft ball assembly, the screw shaft ball assembly is slidably arranged on the outer wall of the ball screw shaft; a two-way rotary joint, the two-way rotary joint is arranged at one end of the ball screw shaft; a temperature control component, the temperature control component is respectively arranged in the internal cavity and the outside of the ball screw shaft, the temperature control component has circulating high-pressure cooling oil; the temperature control component is configured to obtain the real-time temperature inside the ball screw shaft, and adjust the flow rate of the high-pressure cooling oil according to the real-time temperature. The present application solves the problem that the existing ball screw pair temperature control technology cannot accurately control the temperature of the screw pair through the above scheme.

Description

Technical Field

[0001] The present invention relates to the technical field of screw pairs, and in particular to a high-precision intelligent temperature-controlled high-speed ball screw. Background Art

[0002] In the field of modern precision manufacturing, the impact of temperature on high-precision ball screws is a key factor that cannot be ignored. As an important part of the CNC machine tool feed system, the performance of the ball screw directly determines the machining accuracy and efficiency of the machine tool. Especially in high-precision CNC machine tools, the role of the ball screw is even more important.

[0003] The influence of temperature on ball screw pairs is mainly reflected in two aspects: one is the change in length, and the other is the change in stiffness. First, according to the linear expansion coefficient of steel, when the temperature changes by 1°C, the length of a 1-meter-long ball screw shaft will change by 0.012mm accordingly. This tiny change is unacceptable in high-precision processing. Because the positioning accuracy and repeatability of high-precision CNC machine tools usually reach the micron level, any tiny error may cause the precision of the workpiece to fail to meet the standard, thus affecting product quality and performance. In addition to the change in length, the change in temperature will also have a significant impact on the stiffness of the ball screw pair shaft system. Stiffness is an important indicator to measure the ability of a mechanical structure to resist deformation. For a ball screw pair, its stiffness directly affects the feed stability and processing accuracy of the machine tool. As the temperature changes, the material properties of the ball screw pair will change, resulting in a decrease in its stiffness, which in turn affects the processing performance of the machine tool. In addition, with the continuous increase in the speed of the linear moving axis of CNC machine tools, the speed of the ball screw pair is also increasing. However, the increase in speed brings a serious problem, that is, heat. The ball nut and ball screw shaft will generate a lot of heat during high-speed rotation. If the heat dissipation and constant temperature control cannot be effectively achieved, the temperature of the ball screw pair will rise sharply, thus affecting its accuracy and life. High temperature will also reduce the lubrication performance of the ball screw pair, increase wear and noise, and thus reduce the overall performance of the machine tool.

[0004] However, in the existing ball screw pair temperature control technology, there is no solution for precise temperature control. Summary of the invention

[0005] The present application provides a high-precision intelligent temperature-controlled high-speed ball screw pair to solve the problem that the existing ball screw pair temperature control technology cannot accurately control the temperature of the screw pair.

[0006] The screw pair comprises:

[0007] A ball screw shaft, wherein the interior of the ball screw shaft has a cavity, and the outer wall and the inner wall of the ball screw shaft are both spiral groove structures;

[0008] A screw shaft ball assembly, wherein the screw shaft ball assembly is slidably disposed on an outer wall of the ball screw shaft;

[0009] A bidirectional rotary joint, wherein the bidirectional rotary joint is arranged at one end of the ball screw shaft;

[0010] A temperature control component is respectively arranged in the internal cavity and the outside of the ball screw shaft, and the temperature control component has circulating high-pressure cooling oil; the temperature control component is configured to obtain the real-time temperature inside the ball screw shaft and adjust the flow rate of the high-pressure cooling oil according to the real-time temperature.

[0011] Preferably, the screw shaft ball assembly comprises:

[0012] A ball nut, wherein the ball nut is sleeved on the outer wall of the ball screw shaft;

[0013] A high-pressure oil commutator, wherein the high-pressure oil commutator is sleeved on the outer wall of the ball screw shaft and is fixedly connected to the ball nut on one side;

[0014] A ball group is arranged between the ball nut and the high-pressure oil commutator, and the ball group is closely attached to the outer wall of the ball screw shaft; when the ball screw shaft rotates, the ball group moves along the extension direction of the ball screw shaft.

[0015] Preferably, the temperature control component comprises:

[0016] a first temperature control unit, the first temperature control unit being arranged in an internal cavity of the ball screw shaft, the interior and the exterior of the first temperature control unit being filled with the circulating high-pressure cooling oil, and the first temperature control unit being configured to obtain the real-time temperature inside the ball screw shaft;

[0017] A second temperature control unit, wherein the second temperature control unit is arranged outside the ball screw shaft, and the second temperature control unit is arranged around the screw shaft ball assembly, and the interior of the second temperature control unit is filled with the circulating high-pressure cooling oil;

[0018] A control unit is configured to adjust a flow rate of the high-pressure cooling oil in contact with the first temperature control unit and a flow rate of the high-pressure cooling oil in contact with the second temperature control unit according to the real-time temperature.

[0019] Preferably, the first temperature control unit comprises:

[0020] a first high-pressure cooling oil pipe, wherein the first high-pressure cooling oil pipe is disposed in an inner cavity of the ball screw shaft, and a preset distance is provided between the first high-pressure cooling oil pipe and an inner wall of the ball screw shaft, and high-pressure cooling oil flows into the first high-pressure cooling oil pipe from the inside thereof and flows out from a gap between the first high-pressure cooling oil pipe and the ball screw shaft;

[0021] A plurality of thin film temperature sensors are arranged evenly on the outer wall of the first high-pressure cooling oil pipe, and the thin film temperature sensors are configured to obtain the real-time temperature of the high-pressure cooling oil in the internal cavity of the ball screw shaft.

[0022] Preferably, the second temperature control unit comprises:

[0023] The second high-pressure cooling oil pipe is arranged on the outer wall of the ball screw shaft, and the second high-pressure cooling oil pipe is arranged around the ball group. The second high-pressure cooling oil pipe is used for oil pipe reversing by the high-pressure oil reversing device.

[0024] Preferably, the high-pressure oil commutator comprises:

[0025] A first high-pressure oil commutator, wherein the first high-pressure oil commutator is disposed around the ball screw shaft;

[0026] A second high-pressure oil commutator is provided around the ball screw shaft, and the ball nut is fixedly connected to the second high-pressure oil commutator.

[0027] Preferably, the first high-pressure oil commutator comprises:

[0028] A machine body, the machine body is arranged around the ball screw shaft, and the machine body is provided with an oil guide groove;

[0029] An oil guide is arranged in the oil guide groove, part of the pipeline of the second high-pressure cooling oil pipe is arranged in the oil guide, and the oil pipe of the second high-pressure cooling oil pipe is reversed through the oil guide.

[0030] Preferably, the first high-pressure cooling oil pipe comprises:

[0031] A first oil inlet hole and a first oil outlet hole, wherein the first oil inlet hole and the first oil outlet hole are both arranged on the bidirectional rotary joint.

[0032] Preferably, the second high-pressure cooling oil pipe comprises:

[0033] a second oil inlet hole, wherein the second oil inlet hole is provided with a first pipe joint;

[0034] And a second oil outlet hole, wherein the second oil outlet hole is provided with a second pipe joint.

[0035] Preferably, the first temperature control unit further includes:

[0036] A plurality of data lines, each of which corresponds to the thin film temperature sensor in a one-to-one manner, and each of which is connected to the thin film temperature sensor and the control unit;

[0037] A heat-conducting coating film is provided on the outer wall of the first high-pressure cooling oil pipe, and the data line and the thin-film temperature sensor are provided between the heat-conducting coating film and the first high-pressure cooling oil pipe.

[0038] It can be known from the above internal structure that the present application provides a high-precision intelligent temperature-controlled high-speed ball screw pair, the screw pair includes a ball screw shaft, the interior of the ball screw shaft has a cavity, the outer wall and the inner wall of the ball screw shaft are both spiral groove structures; a screw shaft ball assembly, the screw shaft ball assembly is slidably arranged on the outer wall of the ball screw shaft; a two-way rotary joint, the two-way rotary joint is arranged at one end of the ball screw shaft; a temperature control component, the temperature control component is respectively arranged in the internal cavity and the outside of the ball screw shaft, and the temperature control component has circulating high-pressure cooling oil; the temperature control component is configured to obtain the real-time temperature inside the ball screw shaft, and adjust the flow rate of the high-pressure cooling oil according to the real-time temperature. The present application solves the problem that the existing ball screw pair temperature control technology cannot accurately control the temperature of the screw pair through the above scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 This is a structural schematic diagram of a high-precision intelligent temperature-controlled high-speed ball screw pair for this application;

[0041] Figure 2 A partial cross-sectional view of a ball screw shaft in a high-precision intelligent temperature-controlled high-speed ball screw pair of the present application;

[0042] Figure 3 This is a partial cross-sectional view of a first high-pressure cooling oil pipe in a high-precision intelligent temperature-controlled high-speed ball screw pair of the present application;

[0043] Figure 4 This is an assembly diagram of the first high-pressure oil commutator in a high-precision intelligent temperature-controlled high-speed ball screw pair for this application;

[0044] Figure 5This is an exploded diagram of the first high-pressure oil commutator in a high-precision intelligent temperature-controlled high-speed ball screw pair for this application;

[0045] Figure 6 This is a structural perspective view of the first high-pressure oil commutator in a high-precision intelligent temperature-controlled high-speed ball screw pair in this application. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0047] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0048] It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0049] Figure 1 This is a structural schematic diagram of a high-precision intelligent temperature-controlled high-speed ball screw pair for this application.

[0050] Figure 2 A partial cross-sectional view of a ball screw shaft in a high-precision intelligent temperature-controlled high-speed ball screw pair according to the present application.

[0051] See also Figure 1 as well as Figure 2 It can be seen that this embodiment provides a high-precision intelligent temperature-controlled high-speed ball screw pair, and the screw pair includes:

[0052] A ball screw shaft 1000, wherein the interior of the ball screw shaft 1000 has a cavity, and the outer wall and the inner wall of the ball screw shaft 1000 are both spiral groove structures. Specifically, in the present embodiment, the ball screw shaft 1000 is the main structure of the screw pair, wherein the inner wall and the outer wall of the ball screw shaft 1000 are both spiral groove structures. The spiral groove structure can not only meet the movement requirements of the screw pair, but also improve the subsequent cooling effect of the screw pair as a whole.

[0053] The screw pair also includes:

[0054] The screw shaft ball assembly 2000 is slidably arranged on the outer wall of the ball screw shaft 1000. Specifically, in the present embodiment, the screw shaft ball assembly 2000 moves on the ball screw shaft 1000 along the extension direction of the ball screw shaft 1000, and equipment such as a workbench can be lifted through such movement.

[0055] The screw pair also includes:

[0056] A bidirectional rotary joint 3000 is provided at one end of the ball screw shaft 1000. Specifically, in the present embodiment, the bidirectional rotary joint 3000 is used to connect an external device that provides rotational power, and the ball screw shaft 1000 is driven to move by the bidirectional rotary joint 3000.

[0057] The screw pair also includes:

[0058] A temperature control component 4000, wherein the temperature control component 4000 is respectively arranged in the internal cavity and the outside of the ball screw shaft 1000, and the temperature control component 4000 has a circulating high-pressure cooling oil; the temperature control component 4000 is configured to obtain the real-time temperature inside the ball screw shaft 1000, and adjust the flow rate of the high-pressure cooling oil according to the real-time temperature. Specifically, in the present embodiment, the temperature control component 4000 is not a single cooling device arranged outside the ball screw shaft 1000 or the screw shaft ball assembly 2000, but the real-time temperature of the ball screw shaft 1000 is monitored by the temperature control component 4000 in real time, and the cooling is regulated according to the real-time temperature of the ball screw shaft 1000, so as to achieve the effect of precise temperature control, wherein the cooling means of the ball screw shaft 1000 is to use the high-pressure cooling oil for cooling, and the cooling effect is adjusted by adjusting the flow rate of the high-pressure cooling oil.

[0059] Further, in some embodiments, the screw shaft ball assembly 2000 includes:

[0060] A ball nut 2100, wherein the ball nut 2100 is sleeved on the outer wall of the ball screw shaft 1000;

[0061] A high-pressure oil commutator 2200, wherein the high-pressure oil commutator 2200 is sleeved on the outer wall of the ball screw shaft 1000, and the high-pressure oil commutator 2200 is fixedly connected to the ball nut 2100 on one side;

[0062] The ball group 2300 is arranged between the ball nut 2100 and the high-pressure oil reversing device 2200, and the ball group 2300 is close to the outer wall of the ball screw shaft 1000; when the ball screw shaft 1000 rotates, the ball group 2300 moves along the extension direction of the ball screw shaft 1000.

[0063] Specifically, in this embodiment, the ball group 2300 is arranged between the ball nut 2100 and the high-pressure oil reversing device 2200. The ball nut 2100 can not only restrict the ball group 2300 as a whole to prevent it from falling off, but also connect external equipment, such as the above-mentioned workbench, to raise or lower the workbench through the movement of the screw pair.

[0064] Furthermore, in some embodiments, the temperature control component 4000 includes:

[0065] The first temperature control unit 4100 is disposed in the internal cavity of the ball screw shaft 1000. The interior and exterior of the first temperature control unit 4100 are filled with the circulating high-pressure cooling oil. The first temperature control unit 4100 is configured to obtain the real-time temperature inside the ball screw shaft 1000. Specifically, in the present embodiment, the first temperature control unit 4100 mainly serves to cool the ball screw shaft 1000. The ball screw shaft 1000 is cooled by circulating the high-pressure cooling oil corresponding to the first temperature control unit 4100.

[0066] The temperature control assembly 4000 also includes:

[0067] The second temperature control unit 4200 is arranged on the outside of the ball screw shaft 1000, and the second temperature control unit 4200 is arranged around the screw shaft ball assembly 2000. The interior of the second temperature control unit 4200 is filled with the circulating high-pressure cooling oil. Specifically, in the present embodiment, the second temperature control unit 4200 mainly serves to cool the screw shaft ball assembly 2000. The screw shaft ball assembly 2000 is cooled by circulating the high-pressure cooling oil corresponding to the second temperature control unit 4200.

[0068] The temperature control assembly 4000 also includes:

[0069] A control unit 4300, wherein the control unit 4300 is configured to adjust the flow rate of the high-pressure cooling oil in contact with the first temperature control unit 4100 and the flow rate of the high-pressure cooling oil in contact with the second temperature control unit 4200 according to the real-time temperature. Specifically, in the present embodiment, the control unit 4300 is used to generate relevant control instructions according to the real-time temperature of the ball screw shaft 1000, and these control instructions are used to adjust the flow rate of the high-pressure cooling oil corresponding to the first temperature control unit 4100 and the second temperature control unit 4200, thereby adjusting the cooling effect by adjusting the flow rate of the oil.

[0070] Figure 3 This is a partial cross-sectional view of the first high-pressure cooling oil pipe in a high-precision intelligent temperature-controlled high-speed ball screw pair of the present application.

[0071] See also Figure 3 It can be seen that, further, in some embodiments, the first temperature control unit 4100 includes:

[0072] A first high-pressure cooling oil pipe 4110, wherein the first high-pressure cooling oil pipe 4110 is disposed in an internal cavity of the ball screw shaft 1000, and a preset distance is provided between the first high-pressure cooling oil pipe 4110 and an inner wall of the ball screw shaft 1000, and high-pressure cooling oil flows into the first high-pressure cooling oil pipe 4110 and flows out from a gap between the first high-pressure cooling oil pipe 4110 and the ball screw shaft 1000;

[0073] There are several thin film temperature sensors 4120 , so the thin film temperature sensors 4120 are evenly arranged on the outer wall of the first high-pressure cooling oil pipe 4110 , and the thin film temperature sensors 4120 are configured to obtain the real-time temperature of the high-pressure cooling oil in the internal cavity of the ball screw shaft 1000 .

[0074] Specifically, in this embodiment, the first high-pressure cooling oil pipe 4110 in the first temperature control unit 4100 and the gap formed by the first high-pressure cooling oil pipe 4110 and the internal cavity of the ball screw shaft 1000 are used for circulating high-pressure cooling oil. The high-pressure cooling oil enters from the first high-pressure cooling oil pipe 4110 and flows out from the gap, thereby not only achieving a cooling effect, but also avoiding the problem of drilling holes on both sides of the ball screw shaft 1000.

[0075] The thin film temperature sensor 4120 is used to monitor the real-time temperature inside the ball screw shaft 1000 in real time, and to provide a data basis for subsequent precise cooling control.

[0076] Furthermore, in some embodiments, the second temperature control unit 4200 includes:

[0077] The second high-pressure cooling oil pipe 4210 is arranged on the outer wall of the ball screw shaft 1000, and the second high-pressure cooling oil pipe 4210 is arranged around the ball group 2300. The second high-pressure cooling oil pipe 4210 performs oil pipe reversing through the high-pressure oil reversing device 2200.

[0078] Specifically, in this embodiment, the second temperature control unit 4200 is also cooled by circulating high-pressure cooling oil in a pipeline, which is the same as the cooling means of the first temperature control unit 4100. The second high-pressure cooling oil pipe 4210 is reversed by the high-pressure oil reversing device 2200, thereby realizing the second high-pressure cooling oil pipe 4210 being arranged around the ball screw shaft 1000, and further improving the cooling effect on the ball group 2300.

[0079] Furthermore, in some embodiments, the high pressure oil commutator 2200 includes:

[0080] A first high-pressure oil commutator 2210, wherein the first high-pressure oil commutator 2210 is disposed around the ball screw shaft 1000;

[0081] The second high-pressure oil reversing device 2220 is disposed around the ball screw shaft 1000 , and the ball nut 2100 is fixedly connected to the second high-pressure oil reversing device 2220 .

[0082] Specifically, in this embodiment, since the second high-pressure cooling oil pipe 4210 needs to have oil pipe reversing on both sides, it is necessary to set a high-pressure oil reversing device on both sides of the ball group 2300, and fix the ball nut 2100 to the corresponding high-pressure oil reversing device.

[0083] Figure 4 This is an assembly diagram of the first high-pressure oil commutator in a high-precision intelligent temperature-controlled high-speed ball screw pair for this application.

[0084] Figure 5 An exploded diagram of the first high-pressure oil commutator in a high-precision intelligent temperature-controlled high-speed ball screw pair for this application.

[0085] Figure 6 This is a structural perspective view of the first high-pressure oil commutator in a high-precision intelligent temperature-controlled high-speed ball screw pair in this application.

[0086] See also Figure 4 , Figure 5 as well as Figure 6 It can be seen that, further, in some embodiments, the first high-pressure oil reversing device 2210 includes:

[0087] A machine body 2211, wherein the machine body 2211 is disposed around the ball screw shaft 1000, and an oil guide groove is disposed on the machine body 2211;

[0088] The oil guide 2212 is arranged in the oil guide groove, and part of the pipeline of the second high-pressure cooling oil pipe 4210 is arranged in the oil guide 2212, and the oil pipe of the second high-pressure cooling oil pipe 4210 is reversed through the oil guide 2212.

[0089] Specifically, in this embodiment, the first high-pressure oil reversing device 2210 can be understood as a ring with grooves on the surface. The oil guide 2212 is arranged in these grooves to reverse the oil pipe, thereby realizing the surrounding arrangement of the oil pipe.

[0090] Among them, the body 2211 is a circular rotating body, on which two oil guides 2212 are processed, and there are 4 screw holes distributed around the oil guide 2212. The center of the oil guide 2212 is a second-order differentiable three-dimensional space curve, and the three-dimensional space curve is formed by the intersection of two orthogonal cylinders. The directrix of cylinder A is a second-order differentiable plane curve, and the directrix of cylinder B is a circular arc. There is an oil guide groove in the middle part of the oil guide 2212, and the center curve of the oil guide groove is the same as the center curve of the oil guide groove on the body 2211. After the oil guide 2212 is installed on the body 2211, the oil guide groove has a complete channel with openings at both ends and a closed middle. High-pressure oil can enter from one end of the oil guide groove and flow out from the other end. In this process, the flow direction of the oil changes.

[0091] Furthermore, in some embodiments, the first high-pressure cooling oil pipe 4110 includes:

[0092] The first oil inlet hole 4111 and the first oil outlet hole 4112 are both disposed on the bidirectional rotary joint 3000 .

[0093] The second high-pressure cooling oil pipe 4210 includes:

[0094] A second oil inlet hole 4211, wherein the second oil inlet hole 4211 is provided with a first pipe joint 4213;

[0095] And a second oil outlet hole 4212 , wherein the second oil outlet hole 4212 is provided with a second pipe joint 4214 .

[0096] Specifically, in this embodiment, according to Figure 1 as well as Figure 3 It can be seen that the first high-pressure cooling oil pipe 4110 realizes the input and output of high-pressure cooling oil in the ball screw shaft 1000 , so the first high-pressure cooling oil pipe 4110 is arranged on the same side, that is, on the bidirectional rotary joint 3000 .

[0097] Among them, the inlet and outlet of the second high-pressure cooling oil pipe 4210 can be set on one side of the ball screw shaft 1000.

[0098] Furthermore, in some embodiments, the first temperature control unit 4100 further includes:

[0099] A plurality of data lines 4130, wherein the data lines 4130 correspond to the thin film temperature sensors 4120 one by one, and the data lines 4130 are respectively connected to the thin film temperature sensors 4120 and the control unit 4300;

[0100] The thermally conductive coating film 4140 is disposed on the outer wall of the first high-pressure cooling oil pipe 4110 , and the data line 4130 and the thin film temperature sensor 4120 are disposed between the thermally conductive coating film 4140 and the first high-pressure cooling oil pipe 4110 .

[0101] Specifically, in this embodiment, the data acquired by each thin film temperature sensor 4120 is transmitted to the control unit 4300 via the data line 4130, and in order to avoid damage to the data line 4130 and / or the thin film temperature sensor 4120, the thermal conductive coating 4140 is wrapped on the outer side of the first high-pressure cooling oil pipe 4110, thereby not only avoiding damage to the data line 4130 and / or the thin film temperature sensor 4120, but also not affecting the temperature acquisition of the thin film temperature sensor 4120.

[0102] The advantages of this embodiment include:

[0103] Constant temperature control devices are designed on the screw and nut respectively. Thin-film temperature detection sensors are buried on the outside of the oil pipeline in the center of the screw and in the middle of the oil pipeline in the nut. The coolant flow rate is adjusted according to the real-time temperature detection results, thereby realizing the temperature control function of the ball screw pair.

[0104] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above discussion in some embodiments is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the content of this disclosure, so that those skilled in the art can better use the embodiments.

Claims

1. A high-precision intelligent temperature-controlled high-speed ball screw pair, characterized in that: The screw pair comprises: A ball screw shaft (1000), wherein the interior of the ball screw shaft (1000) has a cavity, and the outer wall and the inner wall of the ball screw shaft (1000) are both spiral groove structures; A screw shaft ball assembly (2000), wherein the screw shaft ball assembly (2000) is slidably disposed on the outer wall of the ball screw shaft (1000); A bidirectional rotary joint (3000), wherein the bidirectional rotary joint (3000) is arranged at one end of the ball screw shaft (1000); A temperature control component (4000), the temperature control component (4000) being respectively arranged in the internal cavity and the outside of the ball screw shaft (1000), the temperature control component (4000) having a circulating high-pressure cooling oil; the temperature control component (4000) being configured to obtain the real-time temperature inside the ball screw shaft (1000) and to adjust the flow rate of the high-pressure cooling oil according to the real-time temperature.

2. A high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 1, characterized in that: The screw shaft ball assembly (2000) comprises: A ball nut (2100), wherein the ball nut (2100) is sleeved on the outer wall of the ball screw shaft (1000); A high-pressure oil commutator (2200), wherein the high-pressure oil commutator (2200) is sleeved on the outer wall of the ball screw shaft (1000), and the high-pressure oil commutator (2200) is fixedly connected to the ball nut (2100) on one side; A ball group (2300), wherein the ball group (2300) is arranged between the ball nut (2100) and the high-pressure oil reversing device (2200), and the ball group (2300) is in close contact with the outer wall of the ball screw shaft (1000); when the ball screw shaft (1000) rotates, the ball group (2300) moves along the extension direction of the ball screw shaft (1000).

3. A high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 2, characterized in that: The temperature control component (4000) comprises: a first temperature control unit (4100), the first temperature control unit (4100) being arranged in an internal cavity of the ball screw shaft (1000), the interior and exterior of the first temperature control unit (4100) being filled with the circulating high-pressure cooling oil, and the first temperature control unit (4100) being configured to obtain the real-time temperature inside the ball screw shaft (1000); a second temperature control unit (4200), wherein the second temperature control unit (4200) is arranged outside the ball screw shaft (1000), and the second temperature control unit (4200) is arranged around the screw shaft ball assembly (2000), and the interior of the second temperature control unit (4200) is filled with the circulating high-pressure cooling oil; A control unit (4300), wherein the control unit (4300) is configured to adjust the flow rate of the high-pressure cooling oil in contact with the first temperature control unit (4100) and the flow rate of the high-pressure cooling oil in contact with the second temperature control unit (4200) according to the real-time temperature.

4. The high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 3 is characterized in that: The first temperature control unit (4100) comprises: a first high-pressure cooling oil pipe (4110), wherein the first high-pressure cooling oil pipe (4110) is arranged in an internal cavity of the ball screw shaft (1000), and a preset distance is provided between the first high-pressure cooling oil pipe (4110) and an inner wall of the ball screw shaft (1000), and high-pressure cooling oil flows into the first high-pressure cooling oil pipe (4110) and flows out from a gap between the first high-pressure cooling oil pipe (4110) and the ball screw shaft (1000); A plurality of thin film temperature sensors (4120), so that the thin film temperature sensors (4120) are evenly arranged on the outer wall of the first high-pressure cooling oil pipe (4110), and the thin film temperature sensors (4120) are configured to obtain the real-time temperature of the high-pressure cooling oil in the internal cavity of the ball screw shaft (1000).

5. A high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 4, characterized in that: The second temperature control unit (4200) comprises: A second high-pressure cooling oil pipe (4210), wherein the second high-pressure cooling oil pipe (4210) is arranged on the outer wall of the ball screw shaft (1000), and the second high-pressure cooling oil pipe (4210) is arranged around the ball group (2300), and the second high-pressure cooling oil pipe (4210) performs oil pipe reversing through the high-pressure oil reversing device (2200).

6. The high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 5, characterized in that: The high-pressure oil commutator (2200) comprises: A first high-pressure oil commutator (2210), wherein the first high-pressure oil commutator (2210) is arranged around the ball screw shaft (1000); A second high-pressure oil commutator (2220), wherein the second high-pressure oil commutator (2220) is arranged around the ball screw shaft (1000), and the ball nut (2100) is fixedly connected to the second high-pressure oil commutator (2220).

7. A high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 6, characterized in that: The first high-pressure oil commutator (2210) comprises: A machine body (2211), the machine body (2211) being arranged around the ball screw shaft (1000), and an oil guide groove being arranged on the machine body (2211); An oil guide (2212), wherein the oil guide (2212) is arranged in the oil guide groove, a portion of the second high-pressure cooling oil pipe (4210) is arranged in the oil guide (2212), and the oil pipe of the second high-pressure cooling oil pipe (4210) is reversed through the oil guide (2212).

8. The high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 7, characterized in that: The first high-pressure cooling oil pipe (4110) comprises: A first oil inlet hole (4111) and a first oil outlet hole (4112), wherein the first oil inlet hole (4111) and the first oil outlet hole (4112) are both arranged on the bidirectional rotary joint (3000).

9. The high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 8, characterized in that: The second high-pressure cooling oil pipe (4210) comprises: A second oil inlet hole (4211), wherein the second oil inlet hole (4211) is provided with a first pipe joint (4213); and a second oil outlet hole (4212), wherein the second oil outlet hole (4212) is provided with a second pipe joint (4214).

10. A high-precision intelligent temperature-controlled high-speed ball screw pair according to claim 9, characterized in that: The first temperature control unit (4100) further includes: a plurality of data lines (4130), wherein the data lines (4130) correspond one to one with the thin film temperature sensors (4120), and the data lines (4130) are respectively connected to the thin film temperature sensors (4120) and the control unit (4300); A thermally conductive coating (4140), wherein the thermally conductive coating (4140) is disposed on the outer wall of the first high-pressure cooling oil pipe (4110), and the data line (4130) and the thin film temperature sensor (4120) are disposed between the thermally conductive coating (4140) and the first high-pressure cooling oil pipe (4110).

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