Temperature control lubricating device for main shaft of numerical control machine tool

Abstract

The invention relates to the technical field of machine tool spindle lubrication, and discloses a numerical control machine tool spindle temperature control lubricating device which comprises a numerical control machine tool spindle, a driving device, a connecting mechanism, a conveying and filtering mechanism and a temperature control assembly. By arranging the connecting mechanism, when the numerical control machine tool spindle rotates, the inner connecting sleeve can be driven to rotate together, when the inner connecting sleeve rotates, the inner connecting sleeve can make contact with a first ball and a second ball in the fixing frame to drive the first ball and the second ball to rotate, and lubricating oil can slowly pass through a groove in the rotating process of the first ball; the lubricating oil is brought to the position between the surface of the inner connecting sleeve and the fixing frame from the oil storage groove, the filling amount of the lubricating oil can be controlled by controlling the number and depth of the grooves, and therefore the situation that the spindle of the numerical control machine tool needs to overcome larger oil viscous resistance during operation due to the fact that too much lubricating oil is added is avoided; therefore, rotation and lubricating oil consumption of a numerical control machine tool spindle are affected, and the lubricating effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of machine tool spindle lubrication, in particular to a temperature-controlled lubrication device for a CNC machine tool spindle. Background Art

[0002] The spindle of a CNC machine tool refers to the axis that drives the workpiece or tool to rotate on the machine tool. The spindle of a CNC machine tool refers to the axis that drives the workpiece or tool to rotate on the machine tool. It is often composed of a spindle, bearings, and transmission parts (gears or pulleys). In the machine, it is mainly used to support transmission parts such as gears and pulleys, and to transmit motion and torque, such as the machine tool spindle; some are used to clamp workpieces, such as mandrels. Except for machine tools such as planers and broaching machines whose main motion is linear motion, most machine tools have spindle components. The motion accuracy and structural rigidity of the spindle components are important factors that determine the processing quality and cutting efficiency. The indicators for measuring the performance of the spindle components are mainly rotation accuracy, rigidity, and speed adaptability. The existing CNC machine tool spindles have the following problems when in use:

[0003] At present, some CNC machine tool spindles generally need to be installed with lubrication devices due to their long working hours and heavy workload. The traditional horizontal CNC lathe spindle lubrication is generally oil splashing. With this lubrication method, when the spindle works in a low speed range, it is difficult to completely and effectively splash the lubricating oil to the lubrication position, which will cause the bearings and other objects in the spindle box to be damaged due to excessive friction and lack of effective lubrication. The patent application number in China is CN 107639466A A lubrication device for a CNC machine tool spindle, comprising a lubrication box and a machine tool spindle, wherein an alarm and a PLC controller are installed on the front side of the lubrication box. The lubrication device for the CNC machine tool spindle has a simple structure, and a pressure lubricating oil circulation is formed through the lubrication box, a feeding pipe, a branch pipe, a return pipe, a separator and a filter pipe, thereby reducing friction and taking away heat, thereby ensuring that the running speed of the machine tool spindle is not affected. The air and oil can be mixed through the ejector, and the formed oil mist adheres to the friction surface to play a lubricating role. At the same time, the thickness is relatively thin and it is not easy to collect heat. The speed of the machine tool spindle is detected by a photoelectric encoder, and the pressure and temperature of the lubricating oil output by the return pipe are detected at the same time, so as to provide data feedback for the PLC controller, thereby using a flow control valve and a pressure control valve to accurately supply the lubricating oil.

[0004] However, based on actual use, directly adding lubricating oil to the traditional support bearing cannot guarantee the lubrication effect, and the temperature of the added lubricating oil cannot be controlled, which affects the use effect of the lubricating oil and does not play a good lubricating role. Summary of the invention

[0005] The object of the present invention is to provide a temperature control lubrication device for a spindle of a numerically controlled machine tool to solve the problems raised in the above-mentioned background technology.

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

[0007] A temperature control lubrication device for a spindle of a numerically controlled machine tool, comprising:

[0008] A CNC machine tool spindle and a drive device, wherein the drive device is installed inside the CNC machine tool and the CNC machine tool spindle is installed at the output end of the drive device;

[0009] A connecting mechanism, the connecting mechanism is installed at the connection between the CNC machine tool spindle and the CNC machine tool, and the connecting mechanism is used to reduce the friction between the CNC machine tool spindle and the CNC machine tool to improve the rotation stability of the CNC machine tool spindle;

[0010] A conveying and filtering mechanism, the conveying and filtering mechanism is installed on one side of the connecting mechanism, the conveying and filtering mechanism is connected to the connecting mechanism, and the conveying and filtering mechanism is used to convey lubricating oil into the connecting mechanism;

[0011] A temperature control component is installed on the conveying and filtering mechanism, and is used to heat and control the temperature of the conveyed lubricating oil.

[0012] Optionally, the connecting mechanism includes an external connecting sleeve, an internal connecting sleeve, an oil seal ring, a fixing frame, a partition, a first ball and a second ball, the internal connecting sleeve is fixedly mounted on the side wall of the CNC machine tool spindle, the oil seal ring is mounted between the side wall of the internal connecting sleeve and the inner wall of the external connecting sleeve, the fixing frame is fixedly mounted on the inner wall of the external connecting sleeve, the partition is fixedly mounted inside the fixing frame, the gap between the top of the partition plate and the inner wall of the fixing frame forms an oil storage tank, a first movable groove is provided inside the oil storage tank, the first ball is movably connected inside the first movable groove, a groove is provided on the side wall of the first ball, and several grooves are provided, a second movable groove is provided inside the fixing frame, the second movable groove is located at the bottom of the partition, the second ball is movably connected inside the second movable groove, a first rolling groove is provided on the inner wall of the external connecting sleeve, a second rolling groove is provided on the side wall of the internal connecting sleeve, and the first rolling groove and the second rolling groove both fit with the first ball and the second ball.

[0013] Optionally, the first movable groove and the first rolling ball are both provided in plurality, and the second movable groove and the second rolling ball are both provided in plurality.

[0014] Optionally, a support assembly is provided inside the oil seal ring, and the support assembly includes a self-tightening spring, a mounting plate, a fixing part, a support spring, a movable rod and a support plate. A mounting groove is provided on the inner wall of the oil seal ring, the self-tightening spring is clamped in the mounting groove, the mounting plate is fixedly mounted on the inner wall of the oil seal ring, the fixing part is fixedly mounted on one side of the mounting plate, the support spring is mounted on the side wall of the fixing part, the movable rod is slidably connected inside the fixing part, the support plate is fixedly mounted on the top of the movable rod, and the support plate is an arc-shaped plate, and the curvature of the support plate matches the self-tightening spring.

[0015] Optionally, a plurality of mounting plates are provided, and the plurality of mounting plates are evenly disposed on the inner wall of the oil seal ring; one end of the support spring contacts the support plate, and the other end of the support spring contacts the mounting plate.

[0016] Optionally, an oil inlet is installed at the top of the external connecting sleeve, a first circulation cavity is opened inside the external connecting sleeve near the top side, a connecting hole is opened at the bottom of the first circulation cavity, the first circulation cavity is connected with the oil storage tank through the connecting hole, an oil outlet is installed at the bottom of the external connecting sleeve, a second circulation cavity is opened inside the external connecting sleeve near the bottom side, a fixing tube is fixedly installed inside the second circulation cavity, a mounting hole is opened on the fixing frame near the top side, the fixing tube is located inside the mounting hole, a tube hole is opened at the top of the fixing tube, and the tube hole is connected with the second circulation cavity.

[0017] Optionally, the delivery and filtering mechanism includes an oil storage tank, a first delivery pump, a first connecting pipe, a filling pipe, a second connecting pipe and a second delivery pump, the first delivery pump being fixedly mounted on the top of the oil storage tank, the first delivery pump input end being connected to the oil storage tank, one end of the first connecting pipe being fixedly mounted on the first delivery pump output end, the other end of the first connecting pipe being fixedly mounted on the top of the oil inlet, the second delivery pump being fixedly mounted on the bottom of the oil storage tank, a liquid inlet being provided at the bottom of the oil storage tank, the output end of the second delivery pump being fixedly mounted inside the liquid inlet, one end of the second connecting pipe being fixedly mounted on the second delivery pump input end, the other end of the second connecting pipe being fixedly mounted on the bottom of the oil outlet, and the filling pipe being fixedly mounted on the top of the oil storage tank.

[0018] Optionally, the conveying and filtering mechanism also includes a sliding frame, a filter screen, a magnetic piece and a pull plate. The sliding frame is slidably clamped inside the oil storage tank, the filter screen is fixedly installed inside the sliding frame, the magnetic piece is fixedly installed at the bottom of the sliding frame, a plurality of magnetic pieces are provided, and the plurality of magnetic pieces are evenly distributed at the bottom of the sliding frame, and the pull plate is fixedly installed on one side of the sliding frame.

[0019] Optionally, the input end of the first delivery pump is located at the top of the sliding frame, and the output end of the second delivery pump is located at the bottom of the sliding frame.

[0020] Optionally, the temperature control component includes an electric heating wire, a controller and a temperature sensor, the electric heating wire is fixedly installed on the side wall of the first connecting tube, the controller is fixedly installed on the top of the electric heating wire, the controller is connected to the electric heating wire, the temperature sensor is fixedly installed inside the first connecting tube, and the temperature sensor is located between one side of the electric heating wire and one side of the oil inlet.

[0021] The present invention has at least the following beneficial effects:

[0022] (1) This scheme sets a connection mechanism so that when the CNC machine tool spindle rotates, it can drive the inner connecting sleeve to rotate together. When the inner connecting sleeve rotates, it will contact the first ball and the second ball inside the fixed frame, driving the first ball and the second ball to rotate. By opening a plurality of grooves on the side wall of the first ball, the lubricating oil can slowly pass through the grooves during the rotation of the first ball, and be brought from the oil storage tank to between the surface of the inner connecting sleeve and the fixed frame. By controlling the number and depth of the grooves, the amount of lubricating oil added can be controlled, thereby avoiding adding too much lubricating oil, which causes the CNC machine tool spindle to overcome greater oil viscosity resistance during operation, thereby affecting the rotation of the CNC machine tool spindle and the consumption of lubricating oil, and achieving a better lubrication effect.

[0023] (2) This solution provides a conveying and filtering mechanism. By providing a first conveying pump, the lubricating oil in the oil storage tank can be conveyed to the oil inlet through the first connecting pipe. A second conveying pump is provided. The lubricating oil in the oil outlet can be drawn into the oil storage tank through the liquid inlet through the second connecting pipe for filtration, thereby enabling the lubricating oil to be conveyed quickly.

[0024] (3) This solution can facilitate the pulling and pulling of the sliding frame by providing a pull plate, and by providing a magnetic member at the bottom of the sliding frame, it can be used to absorb metal chips in the lubricating oil delivered to the oil storage tank through the liquid inlet by the second delivery pump, so as to prevent the metal chips from penetrating through the filter screen to the top of the sliding frame, thereby improving the filtering effect. By taking out the sliding frame, the filter screen and the magnetic member can be easily cleaned;

[0025] (4) This solution provides a temperature control component. By providing an electric heating wire, the lubricating oil transported inside the first connecting pipe can be heated. By providing a temperature sensor, the temperature of the heated lubricating oil can be monitored. By providing a controller, the heating temperature of the electric heating wire can be adjusted according to the detection result of the temperature sensor, thereby achieving a temperature control effect, ensuring that the lubricating oil maintains an optimal operating temperature, and achieving a better lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the cross-sectional structure of the oil storage tank of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the oil storage tank of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the sliding frame of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the connecting mechanism of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the fixing frame and the inner connecting sleeve of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the fixing frame of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the external connecting sleeve of the present invention;

[0035] Fig. 9 This is a schematic diagram of the cross-sectional structure of the external connecting sleeve of the present invention;

[0036] Fig.10 It is a partial cross-sectional structural schematic diagram of the oil seal ring of the present invention;

[0037] Fig.11 It is a schematic diagram of the mounting plate structure of the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 1. CNC machine tool spindle; 101. driving device; 2. external connecting sleeve; 2001. first rolling groove; 201. internal connecting sleeve; 2011. second rolling groove; 202. oil seal ring; 2021. mounting groove; 2022. self-tightening spring; 2023. mounting plate; 2024. fixing member; 2025. supporting spring; 2026. movable rod; 2027. supporting plate; 203. oil inlet; 2031. first circulation cavity; 2032. connecting hole; 204. oil outlet; 2041. second circulation cavity; 2042. fixing pipe; 2043. pipe hole; 205. fixing member Fixed frame; 2051, partition; 2052, first movable groove; 2053, first ball; 20531, groove; 2054, second movable groove; 2055, second ball; 2056, mounting hole; 2057, oil storage tank; 3, electric heating wire; 301, controller; 302, temperature sensor; 4, oil storage tank; 401, first delivery pump; 4011, first connecting pipe; 402, filling pipe; 403, second connecting pipe; 4031, second delivery pump; 4032, liquid inlet; 404, sliding frame; 4041, filter screen; 4042, magnetic part; 4043, pull plate. DETAILED DESCRIPTION

[0040] 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.

[0041] See also Figure 1-Figure 11 The present invention provides a temperature control lubrication device for a spindle of a numerically controlled machine tool, comprising:

[0042] A CNC machine tool spindle 1 and a drive device 101, wherein the drive device 101 is installed inside the CNC machine tool, and the CNC machine tool spindle 1 is installed at the output end of the drive device 101;

[0043] A connecting mechanism is installed at the connection between the CNC machine tool spindle 1 and the CNC machine tool. The connecting mechanism is used to reduce the friction between the CNC machine tool spindle 1 and the CNC machine tool. The connecting mechanism is used to make the CNC machine tool spindle 1 rotate more stably.

[0044] A conveying and filtering mechanism, which is installed on one side of the connecting mechanism and is connected to the connecting mechanism, and is used to convey lubricating oil into the connecting mechanism;

[0045] The temperature control component is installed on the conveying and filtering mechanism, and is used to heat and control the temperature of the conveyed lubricating oil.

[0046] In some embodiments, see Figure 5 , Figure 6 , Figure 7 The connecting mechanism includes an outer connecting sleeve 2, an inner connecting sleeve 201, an oil seal ring 202, a fixing frame 205, a partition 2051, a first ball 2053 and a second ball 2055. The inner connecting sleeve 201 is fixedly mounted on the side wall of the CNC machine tool spindle 1. The oil seal ring 202 is mounted between the side wall of the inner connecting sleeve 201 and the inner wall of the outer connecting sleeve 2. The fixing frame 205 is fixedly mounted on the inner wall of the outer connecting sleeve 2. The partition 2051 is fixedly mounted inside the fixing frame 205. The gap between the top of the partition 2051 and the inner wall of the fixing frame 205 forms an oil storage tank 2057. The oil storage tank 2057 A first movable groove 2052 is provided inside, a first ball 2053 is movably connected inside the first movable groove 2052, a groove 20531 is provided on the side wall of the first ball 2053, a plurality of grooves 20531 are provided, a second movable groove 2054 is provided inside the fixing frame 205, the second movable groove 2054 is located at the bottom of the partition 2051, the second ball 2055 is movably connected inside the second movable groove 2054, a first rolling groove 2001 is provided on the inner wall of the outer connecting sleeve 2, a second rolling groove 2011 is provided on the side wall of the inner connecting sleeve 201, the first rolling groove 2001 and the second rolling groove 2011 is matched with the first ball 2053 and the second ball 2055. The internal space of the fixing frame 205 can be separated by setting the partition 2051, so that the lubricating oil can be isolated in the oil storage tank 2057. The external connecting sleeve 2 is installed on the CNC machine tool. By installing the internal connecting sleeve 201 on the side wall of the CNC machine tool spindle 1, the internal connecting sleeve 201 can be driven to rotate together when the CNC machine tool spindle 1 rotates. When the internal connecting sleeve 201 rotates, it will contact the first ball 2053 and the second ball 2055 inside the fixing frame 205, driving the first ball 2053 and the second ball 2055 rotates, and by opening a plurality of grooves 20531 on the side wall of the first ball 2053, the lubricating oil can slowly pass through the grooves 20531 during the rotation of the first ball 2053, and be brought from the oil storage tank 2057 to between the surface of the inner connecting sleeve 201 and the fixed frame 205. By controlling the number and depth of the grooves 20531, the filling amount of the lubricating oil can be controlled, thereby avoiding adding too much lubricating oil, which causes the CNC machine tool spindle 1 to need to overcome greater oil viscosity resistance during operation, thereby affecting the rotation of the CNC machine tool spindle 1 and the consumption of lubricating oil, and making the lubrication effect better.

[0047] In some embodiments, see Figure 6 , Figure 7There are several first movable grooves 2052 and several first balls 2053, and there are several second movable grooves 2054 and several second balls 2055. By setting several first balls 2053 and second balls 2055, the bearing capacity of the bearing can be improved. By setting the first balls 2053 and the second balls 2055, the friction coefficient of the CNC machine tool spindle 1 during rotation can be reduced. The lower the friction coefficient, the better the rotation effect of the CNC machine tool spindle 1.

[0048] In some embodiments, see Fig.10 , Fig.11 A support assembly is arranged inside the oil seal ring 202, and the support assembly includes a self-tightening spring 2022, a mounting plate 2023, a fixing piece 2024, a support spring 2025, a movable rod 2026 and a support plate 2027. A mounting groove 2021 is provided on the inner wall of the oil seal ring 202, and the self-tightening spring 2022 is clamped inside the mounting groove 2021. The mounting plate 2023 is fixedly mounted on the inner wall of the oil seal ring 202, and the fixing piece 2024 is fixedly mounted on one side of the mounting plate 2023. The support spring 2025 is mounted on the side wall of the fixing piece 2024, and the movable rod 2026 is slidably connected inside the fixing piece 2024. The support plate 2027 is provided with a mounting groove 2021. The self-tightening spring 2022 is clamped inside the mounting groove 2021. The mounting plate 2023 is fixedly mounted on the inner wall of the oil seal ring 202, and the fixing piece 2024 is fixedly mounted on one side of the mounting plate 2023. The support spring 2025 is mounted on the side wall of the fixing piece 2024. The movable rod 2026 is slidably connected inside the fixing piece 2024. 027 is fixedly installed on the top of the movable rod 2026, and the support plate 2027 is an arc-shaped plate. The curvature of the support plate 2027 matches the self-tightening spring 2022. By setting the self-tightening spring 2022, the oil seal ring 202 can be supported, so that the oil seal ring 202 is not easy to deform, and can play a better supporting effect. By setting the support spring 2025, the support plate 2027 can be supported, so that the self-tightening spring 2022 can be supported, so that the oil seal ring 202 and the inner wall of the outer connecting sleeve 2 and the outer wall of the inner connecting sleeve 201 are more closely contacted, so as to achieve a better sealing effect and avoid leakage of lubricating oil.

[0049] In some embodiments, see Fig.10 , Fig.11 , there are several mounting plates 2023, and the several mounting plates 2023 are evenly arranged on the inner wall of the oil seal ring 202, one end of the support spring 2025 is in contact with the support plate 2027, and the other end of the support spring 2025 is in contact with the mounting plate 2023, and there are several mounting plates 2023, fixing parts 2024, support springs 2025, movable rods 2026 and support plates 2027. By arranging several mounting plates 2023, fixing parts 2024, support springs 2025, movable rods 2026 and support plates 2027, the self-tightening spring 2022 can be evenly supported, so that the sealing effect of the oil seal ring 202 is better.

[0050] In some embodiments, see Figure 8 , Fig. 9The outer connecting sleeve 2 is provided with an oil inlet 203 at the top, a first circulation cavity 2031 is provided near the top of the outer connecting sleeve 2, a connecting hole 2032 is provided at the bottom of the first circulation cavity 2031, and the first circulation cavity 2031 is connected with the oil storage tank 2057 through the connecting hole 2032, an oil outlet 204 is provided at the bottom of the outer connecting sleeve 2, a second circulation cavity 2041 is provided near the bottom of the outer connecting sleeve 2, a fixing pipe 2042 is fixedly installed inside the second circulation cavity 2041, a mounting hole 2056 is provided near the top of the fixing frame 205, the fixing pipe 2042 is located inside the mounting hole 2056, and the fixing pipe 2042 is located inside the mounting hole 2056. A tube hole 2043 is opened on the top of 042, and the tube hole 2043 is connected with the second circulation chamber 2041. By setting the first circulation chamber 2031, it can be used to store the lubricating oil flowing in from the oil inlet 203. By setting the connecting hole 2032, the lubricating oil inside the first circulation chamber 2031 can slowly flow into the oil storage tank 2057, and then be brought into the surface of the inner connecting sleeve 201 by the rotating first ball 2053 for lubrication. By setting the fixed tube 2042, the lubricating oil deposited at the bottom end of the fixed frame 205 can flow into the second circulation chamber 2041 through the tube hole 2043 on the top of the fixed tube 2042, and finally be discharged from the oil outlet 204.

[0051] In some embodiments, see Figure 2 , Figure 3 The delivery and filtering mechanism includes an oil storage tank 4, a first delivery pump 401, a first connecting pipe 4011, a filling pipe 402, a second connecting pipe 403 and a second delivery pump 4031. The first delivery pump 401 is fixedly installed on the top of the oil storage tank 4. The input end of the first delivery pump 401 is connected to the oil storage tank 4. One end of the first connecting pipe 4011 is fixedly installed on the output end of the first delivery pump 401. The other end of the first connecting pipe 4011 is fixedly installed on the top of the oil inlet 203. The second delivery pump 4031 is fixedly installed on the bottom of the oil storage tank 4. A liquid inlet 4032 is opened at the bottom of the oil storage tank 4. The output end of the second delivery pump 4031 is fixedly installed inside the liquid inlet 4032. One end of the second connecting pipe 403 is fixedly installed on the input end of the second delivery pump 4031, and the other end of the second connecting pipe 403 is fixedly installed at the bottom of the oil outlet 204. The filling pipe 402 is fixedly installed on the top of the oil storage tank 4. By setting the filling pipe 402, the lubricating oil can be added to the inside of the oil storage tank 4. By setting the first delivery pump 401, the lubricating oil inside the oil storage tank 4 can be delivered to the oil inlet 203 through the first connecting pipe 4011. The second delivery pump 4031 is set, and the lubricating oil in the oil outlet 204 can be drawn into the inside of the oil storage tank 4 through the liquid inlet 4032 for filtration through the second connecting pipe 403, so that the lubricating oil can be quickly delivered.

[0052] In some embodiments, see Figure 2 , Figure 4The conveying and filtering mechanism also includes a sliding frame 404, a filter screen 4041, a magnetic piece 4042 and a pull plate 4043. The sliding frame 404 is slidably connected to the inside of the oil storage tank 4. The filter screen 4041 is fixedly installed inside the sliding frame 404. The magnetic piece 4042 is fixedly installed at the bottom of the sliding frame 404. There are a plurality of magnetic pieces 4042, and the plurality of magnetic pieces 4042 are evenly distributed at the bottom of the sliding frame 404. The input end of the first conveying pump 401 is located at the top of the sliding frame 404, and the output end of the second conveying pump 4031 is located at the bottom of the sliding frame 404. The pull plate 4043 is fixedly installed on one side of the sliding frame 404. The input end of the first conveying pump 401 is located at the top of the sliding frame 404. The second conveying pump 4031 The output end is located at the bottom of the sliding frame 404. By setting the input end of the first delivery pump 401 at the top of the sliding frame 404, the lubricating oil delivered by the first delivery pump 401 is the lubricating oil filtered by the filter 4041, thereby ensuring the use effect of the lubricating oil. By setting the pull plate 4043, the sliding frame 404 can be easily pulled out. By setting the magnetic piece 4042 at the bottom of the sliding frame 404, it can be used to absorb the metal chips in the lubricating oil delivered to the oil storage tank 4 through the liquid inlet 4032 by the second delivery pump 4031, so as to prevent the metal chips from penetrating through the filter 4041 to the top of the sliding frame 404, thereby making the filtering effect better. By taking out the sliding frame 404, the filter 4041 and the magnetic piece 4042 can be easily cleaned.

[0053] In some embodiments, see Figure 1 , Figure 2 The temperature control component includes an electric heating wire 3, a controller 301 and a temperature sensor 302. The electric heating wire 3 is fixedly installed on the side wall of the first connecting tube 4011, the controller 301 is fixedly installed on the top of the electric heating wire 3, the controller 301 is connected to the electric heating wire 3, and the temperature sensor 302 is fixedly installed inside the first connecting tube 4011. The temperature sensor 302 is located between one side of the electric heating wire 3 and one side of the oil inlet 203. By setting the electric heating wire 3, the lubricating oil transported inside the first connecting tube 4011 can be heated. By setting the temperature sensor 302, the temperature of the heated lubricating oil can be monitored. By setting the controller 301, the heating temperature of the electric heating wire 3 can be adjusted according to the detection result of the temperature sensor 302, thereby achieving a temperature control effect, ensuring that the lubricating oil maintains an optimal operating temperature, and achieving a better lubrication effect.

[0054] The working process and principle of the present invention are as follows: when in use, the lubricating oil in the oil storage tank 4 can be delivered to the oil inlet 203 through the first connecting pipe 4011 by the first delivery pump 401, and the first circulation cavity 2031 can be used to store the lubricating oil flowing in from the oil inlet 203, and the lubricating oil in the first circulation cavity 2031 can be slowly flowed into the oil storage tank 2057 by setting the connecting hole 2032. When the CNC machine tool spindle 1 rotates, it can drive the inner connecting sleeve 201 to rotate together, and when the inner connecting sleeve 201 rotates, it will rotate with the fixing frame 205 The first ball 2053 and the second ball 2055 are in contact with each other, driving the first ball 2053 and the second ball 2055 to rotate. A plurality of grooves 20531 are provided on the side wall of the first ball 2053, so that the lubricating oil can slowly pass through the grooves 20531 during the rotation of the first ball 2053, and is brought from the oil storage tank 2057 to between the surface of the inner connecting sleeve 201 and the fixing frame 205, thereby avoiding adding too much lubricating oil, which causes the CNC machine tool spindle 1 to need to overcome greater oil viscosity resistance during operation. The fixed pipe 2042 allows the lubricating oil deposited at the bottom of the fixed frame 205 to flow into the second circulation cavity 2041 through the pipe hole 2043 at the top of the fixed pipe 2042, and finally be discharged from the oil outlet 204. The lubricating oil in the oil outlet 204 can be pumped into the oil storage tank 4 through the liquid inlet 4032 through the second connecting pipe 403 through the second delivery pump 4031 for filtration, thereby quickly delivering the lubricating oil. By setting the input end of the first delivery pump 401 at the top of the sliding frame 404, the first delivery pump 401 can deliver The lubricating oil is the lubricating oil filtered by the filter 4041, which ensures the use effect of the lubricating oil. By setting the pull plate 4043, the sliding frame 404 can be easily pulled out. By setting the magnetic piece 4042 at the bottom of the sliding frame 404, it can be used to absorb the metal chips in the lubricating oil delivered to the oil storage tank 4 through the liquid inlet 4032 by the second delivery pump 4031, so as to prevent the metal chips from penetrating through the filter 4041 to the top of the sliding frame 404, so as to make the filtering effect better. By taking out the sliding frame 404, the filter 4041 and the magnetic piece 4042 can be easily cleaned.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature control lubrication device for a CNC machine tool spindle, characterized in that: include: A CNC machine tool spindle (1) and a drive device (101), wherein the drive device (101) is installed inside the CNC machine tool, and the CNC machine tool spindle (1) is installed at the output end of the drive device (101); A connecting mechanism, the connecting mechanism being installed at the connection between the CNC machine tool spindle (1) and the CNC machine tool, the connecting mechanism being used to reduce the friction between the CNC machine tool spindle (1) and the CNC machine tool, so as to improve the rotational stability of the CNC machine tool spindle (1); A conveying and filtering mechanism, the conveying and filtering mechanism is installed on one side of the connecting mechanism, the conveying and filtering mechanism is connected to the connecting mechanism, and the conveying and filtering mechanism is used to convey lubricating oil into the connecting mechanism; A temperature control component is installed on the conveying and filtering mechanism, and is used to heat and control the temperature of the conveyed lubricating oil.

2. A temperature control lubrication device for a CNC machine tool spindle according to claim 1, characterized in that: The connection mechanism comprises an outer connection sleeve (2), an inner connection sleeve (201), an oil seal ring (202), a fixing frame (205), a partition (2051), a first ball (2053) and a second ball (2055); the inner connection sleeve (201) is fixedly mounted on the side wall of the CNC machine tool spindle (1); the oil seal ring (202) is mounted between the side wall of the inner connection sleeve (201) and the inner wall of the outer connection sleeve (2); the fixing frame (205) is fixedly mounted on the inner wall of the outer connection sleeve (2); the partition (2051) is fixedly mounted inside the fixing frame (205); the gap between the top of the partition (2051) and the inner wall of the fixing frame (205) forms an oil storage tank (2057); a first movable groove (2052) is provided inside the oil storage tank (2057) The first ball (2053) is movably connected inside the first movable groove (2052), a groove (20531) is provided on the side wall of the first ball (2053), and a plurality of grooves (20531) are provided inside the fixing frame (205), and the second movable groove (2054) is located at the bottom of the partition (2051), and the second ball (2055) is movably connected inside the second movable groove (2054), a first rolling groove (2001) is provided on the inner wall of the outer connecting sleeve (2), and a second rolling groove (2011) is provided on the side wall of the inner connecting sleeve (201), and the first rolling groove (2001) and the second rolling groove (2011) are both matched with the first ball (2053) and the second ball (2055).

3. A temperature control lubrication device for a CNC machine tool spindle according to claim 2, characterized in that: The first movable groove (2052) and the first rolling ball (2053) are both provided in plurality, and the second movable groove (2054) and the second rolling ball (2055) are both provided in plurality.

4. The temperature control lubrication device for a CNC machine tool spindle according to claim 2, characterized in that: A support assembly is arranged inside the oil seal ring (202), and the support assembly comprises a self-tightening spring (2022), a mounting plate (2023), a fixing member (2024), a support spring (2025), a movable rod (2026) and a support plate (2027). An installation groove (2021) is provided on the inner wall of the oil seal ring (202), the self-tightening spring (2022) is clamped inside the installation groove (2021), and the installation plate (2023) is fixedly mounted on the oil seal ring ( 202) inner wall, the fixing member (2024) is fixedly mounted on one side of the mounting plate (2023), the supporting spring (2025) is mounted on the side wall of the fixing member (2024), the movable rod (2026) is slidably connected inside the fixing member (2024), the supporting plate (2027) is fixedly mounted on the top of the movable rod (2026), the supporting plate (2027) is an arc-shaped plate, and the arc of the supporting plate (2027) matches the self-tightening spring (2022).

5. The temperature control lubrication device for a CNC machine tool spindle according to claim 4, characterized in that: A plurality of the mounting plates (2023) are provided, and the plurality of the mounting plates (2023) are evenly disposed on the inner wall of the oil seal ring (202); one end of the support spring (2025) is in contact with the support plate (2027), and the other end of the support spring (2025) is in contact with the mounting plate (2023).

6. The temperature control lubrication device for a CNC machine tool spindle according to claim 2, characterized in that: The top of the external connection sleeve (2) is provided with an oil inlet (203); a first circulation cavity (2031) is provided inside the external connection sleeve (2) near the top side; a connecting hole (2032) is provided at the bottom of the first circulation cavity (2031); the first circulation cavity (2031) is connected to the oil storage tank (2057) through the connecting hole (2032); an oil outlet (204) is provided at the bottom of the external connection sleeve (2); A second circulation cavity (2041) is provided on one side near the bottom end of the interior, a fixed tube (2042) is fixedly installed inside the second circulation cavity (2041), a mounting hole (2056) is provided on one side near the top end of the fixing frame (205), the fixed tube (2042) is located inside the mounting hole (2056), a tube hole (2043) is provided on the top end of the fixed tube (2042), and the tube hole (2043) is connected to the second circulation cavity (2041).

7. A temperature control lubrication device for a CNC machine tool spindle according to claim 6, characterized in that: The delivery and filtering mechanism comprises an oil storage tank (4), a first delivery pump (401), a first connecting pipe (4011), a filling pipe (402), a second connecting pipe (403) and a second delivery pump (4031), wherein the first delivery pump (401) is fixedly mounted on the top of the oil storage tank (4), an input end of the first delivery pump (401) is connected to the oil storage tank (4), one end of the first connecting pipe (4011) is fixedly mounted on the output end of the first delivery pump (401), and the other end of the first connecting pipe (4011) is fixedly mounted on the oil inlet The second delivery pump (4031) is fixedly mounted on the top of the oil storage tank (203), the second delivery pump (4031) is fixedly mounted on the bottom of the oil storage tank (4), a liquid inlet (4032) is provided at the bottom of the oil storage tank (4), the output end of the second delivery pump (4031) is fixedly mounted inside the liquid inlet (4032), one end of the second connecting pipe (403) is fixedly mounted on the input end of the second delivery pump (4031), the other end of the second connecting pipe (403) is fixedly mounted on the bottom of the oil outlet (204), and the filling pipe (402) is fixedly mounted on the top of the oil storage tank (4).

8. The temperature control lubrication device for a CNC machine tool spindle according to claim 7, characterized in that: The conveying and filtering mechanism further comprises a sliding frame (404), a filter screen (4041), a magnetic piece (4042) and a pull plate (4043); the sliding frame (404) is slidably clamped inside the oil storage tank (4); the filter screen (4041) is fixedly mounted inside the sliding frame (404); the magnetic piece (4042) is fixedly mounted at the bottom of the sliding frame (404); a plurality of magnetic pieces (4042) are provided, and the plurality of magnetic pieces (4042) are evenly distributed at the bottom of the sliding frame (404); and the pull plate (4043) is fixedly mounted on one side of the sliding frame (404).

9. The temperature control lubrication device for a CNC machine tool spindle according to claim 8, characterized in that: The input end of the first delivery pump (401) is located at the top of the sliding frame (404), and the output end of the second delivery pump (4031) is located at the bottom of the sliding frame (404).

10. The temperature control lubrication device for a CNC machine tool spindle according to claim 7, characterized in that: The temperature control component comprises an electric heating wire (3), a controller (301) and a temperature sensor (302); the electric heating wire (3) is fixedly mounted on the side wall of the first connecting tube (4011); the controller (301) is fixedly mounted on the top of the electric heating wire (3); the controller (301) is connected to the electric heating wire (3); the temperature sensor (302) is fixedly mounted inside the first connecting tube (4011); and the temperature sensor (302) is located between one side of the electric heating wire (3) and one side of the oil inlet (203).

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