CN219987025U

CN219987025U - Numerical control machine tool spindle lubricating device

Info

Publication number: CN219987025U
Application number: CN202321384236.0U
Authority: CN
Inventors: 付晓燕
Original assignee: Shandong Fuyiyuan Numerical Control Technology Co ltd
Current assignee: Shandong Fuyiyuan Numerical Control Technology Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2023-11-10
Anticipated expiration: 2033-06-02

Abstract

The utility model discloses a numerical control machine tool main shaft lubricating device which comprises a numerical control machine tool main shaft main body and two support bearings sleeved on the numerical control machine tool main shaft main body, wherein the two support bearings are provided with the same lubricating device body, and the lubricating device body comprises a lubricating oil tank. According to the utility model, through the arrangement of the PCL controller, the temperature sensor, the quantitative oil feeding assembly and the self-opening assembly, the principle that larger heat is generated when the supporting bearing lacks oil is combined, the temperature and the lubricating oil filling flow can be automatically detected and the opening and closing can be automatically controlled, so that the quantitative lubricating oil filling operation can be automatically and timely carried out on the supporting bearing, the phenomenon of untimely filling is prevented, the filling quantity is also convenient to master, and through the arrangement of the oil level floating control alarm assembly, the phenomenon that the oiling work is influenced by untimely filling can be effectively prevented from being generated by automatic timely alarm reminding when the lubricating oil in the lubricating oil tank lacks oil, the intelligent automation degree is high, and the labor cost is reduced.

Description

Numerical control machine tool spindle lubricating device

Technical Field

The utility model relates to the technical field of numerical control machine tool spindle lubrication, in particular to a numerical control machine tool spindle lubrication device.

Background

At present, a plurality of numerical control machine tool spindles are generally required to be provided with a lubricating device due to long working time and large working load, the numerical control machine tool spindles are a general name of a machine tool spindle body and a spindle supporting bearing, and the lubricating oil is lack in the spindle supporting bearing for long-time rotary motion to cause friction, scalding and damage, so that the spindle supporting bearing on the spindle body is required to be lubricated by the lubricating device;

for a numerical control machine tool main shaft lubricating device, according to the retrieval, in the prior art, an authorization publication number CN212886538U discloses a numerical control machine tool main shaft lubricating device, which belongs to the technical field of machine tool main shaft lubrication, and comprises a main shaft main body, wherein support bearings are sleeved on the left side and the right side of the surface of the main shaft main body, and the upper surface of each support bearing is communicated with one end of a hose; this digit control machine tool main shaft lubricating arrangement, through setting up hose, casing, sponge, connecting rod, logical groove, permanent magnet, spring and electro-magnet, the left surface fixedly connected with oil tank of electro-magnet, after the electro-magnet circular telegram, the magnetic force that the electro-magnet produced attracts the permanent magnet upward movement, drive piston upward movement through the connecting rod for in the oil tank lubricating oil inflow sponge, under the effect of sponge, lubricating oil passes through the hose in the even flow of support bearing, after the electro-magnet outage, the pulling force that the spring produced drives piston downward movement through permanent magnet and connecting rod, make the piston seal up the second through-hole, can avoid the trouble that traditional mode of adding lubricating oil brought like this, guarantee simultaneously that lubricating oil is even to pour into in the main shaft main body.

The patent personnel can add lubricating oil to the support bearing on the main shaft in a mode of removing the blocking by utilizing magnetic attraction by electrifying the electromagnet, but the main shaft still has some defects;

1. the plugging and lubricating oil adding mode is relieved, personnel are required to control the electrifying of the electromagnet, the process needs to manually judge whether the oiling is performed or the timing adding is performed manually in advance, the phenomenon of untimely filling is easy to occur in a manual control mode, the filling amount of each time is difficult to accurately control, and the labor cost is increased;

2. the oil tank is used for storing lubricating oil, and is less and less along with use, and because the structure capable of reminding when oil shortage is not arranged, whether the lubricating oil is reserved for supplementing work or not needs to be observed manually at regular time, the phenomenon that the oil injection work is not timely influenced due to the fact that the oil is supplemented easily occurs in a manual observation mode is low in automation degree, the use requirements cannot be met, the phenomenon is integrated, and therefore the numerical control machine main shaft lubricating device is provided for solving the problems.

Disclosure of Invention

The utility model aims to provide a numerical control machine tool spindle lubricating device to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the lubrication device for the spindle of the numerical control machine tool comprises a main body of the spindle of the numerical control machine tool and two support bearings sleeved on the main body of the spindle of the numerical control machine tool, wherein the two support bearings are provided with the same lubrication device body, the lubrication device body comprises a lubrication oil tank, the top of the lubrication oil tank is fixedly connected with a cover plate, and the right side of the top of the cover plate is fixedly provided with a PCL controller and an audible-visual alarm;

the bottom of the lubricating oil tank is embedded and fixed with a Y-shaped pipe, both ends of the bottom of the Y-shaped pipe are communicated and fixed with quantitative oil feeding components, the quantitative oil feeding components are electrically connected with the PCL controller, the bottom ends of the quantitative oil feeding components are communicated and fixed with the tops of the outer rings of the corresponding support bearings, and the quantitative oil feeding components are used for quantitatively adding lubricating oil into the support bearings;

the automatic oiling device is characterized in that an oiling pipe communicated with the top end of a Y-shaped pipe is fixedly connected to the inner wall of the bottom of the lubricating oil tank, oil inlet holes communicated with the inside of the lubricating oil tank are formed in the inner walls of the two sides of the oiling pipe, a self-opening assembly fixedly mounted with a cover plate is sleeved in the oiling pipe in a sealing sliding mode, the self-opening assembly is electrically connected with a PCL controller, the self-opening assembly is matched with the two oil inlet holes, a temperature sensor is fixedly connected to the top of an outer ring of a supporting bearing and is electrically connected with the PCL controller, the temperature sensor is used for detecting the temperature of the corresponding supporting bearing and transmitting the temperature to the PCL controller, when lubrication is absent, the supporting bearing is heated by friction, so that the PCL controller can automatically open the self-opening assembly according to the preset oiling temperature, and the set self-opening assembly is used for automatically releasing shielding the oil inlet holes;

the oil level floating control alarm assembly is arranged on the outer side of the oil filling pipe and fixedly connected with the cover plate, the oil level floating control alarm assembly is electrically connected with the audible and visual alarm, and the oil level floating control alarm assembly is used for detecting the oil level in the lubricating oil tank and automatically controlling the audible and visual alarm to start to alarm in time when the oil level is low.

Preferably, the quantitative oil feeding assembly comprises a liquid flowmeter, an electromagnetic valve and a hose, wherein two ends of the bottom of the Y-shaped pipe are respectively communicated and fixed with a liquid inlet of the corresponding liquid flowmeter, the liquid inlet of the electromagnetic valve is communicated and fixed with a liquid outlet of the corresponding liquid flowmeter, the top end of the hose is communicated and fixed with a liquid outlet of the corresponding electromagnetic valve, the bottom end of the hose is communicated and fixed with the top of an outer ring of the corresponding support bearing, the liquid flowmeter and the electromagnetic valve are electrically connected with a PCL controller, the arranged liquid flowmeter, the electromagnetic valve and the hose are matched, the flow of lubricating oil during filling is detected by the liquid flowmeter and is transmitted to the PCL controller, and the closing of the electromagnetic valve and the forward starting of the electric telescopic rod are automatically controlled by the PCL controller to perform double-position sealing operation after the preset filling amount is reached;

preferably, the self-opening assembly comprises a piston and an electric telescopic rod, the piston is hermetically sleeved in the oil filling pipe, the piston is positioned between two oil inlet holes and matched with the two oil inlet holes, the electric telescopic rod is fixedly arranged at the top of the cover plate, the extending end of the electric telescopic rod extends into the oil filling pipe and is fixedly connected with the top of the piston, the electric telescopic rod is electrically connected with the PCL controller and is controlled by the PCL controller, the self-opening assembly comprises the piston and the electric telescopic rod, when the PCL controller receives the temperature value transmitted by the temperature sensor to reach the preset value, the piston is judged to be in an oil shortage state, and the electric telescopic rod is controlled to automatically reversely start and control the electromagnetic valve to be opened so as to drive the piston to upwards release the blocking of the oil inlet holes for oil filling and lubrication operation.

Preferably, the oil level floating control alarm assembly comprises a sliding sleeve, an annular hollow floating plate, an L-shaped rod, a light touch opening switch and a light touch closing switch, wherein the sliding sleeve is slidably sleeved on the outer side of the oil filling pipe, the annular hollow floating plate is fixedly connected with the left side of the top of the sliding sleeve, the bottom end of the L-shaped rod is extended to the upper side of a cover plate, the cover plate is slidably sleeved on the L-shaped rod, the bottom of the light touch opening switch is fixedly connected with the top of the cover plate, the light touch opening switch is located on the inner side of the L-shaped rod and is in extrusion fit with the inner wall of the top of the L-shaped rod, the light touch closing switch is located on the upper side of the sliding sleeve and is in extrusion fit with the top of the sliding sleeve, the annular hollow floating plate, the L-shaped rod, the light touch opening switch and the light touch closing switch are arranged in cooperation, the sliding sleeve is driven by lubricating oil to float the annular hollow floating plate, the sliding sleeve is driven according to the lubricating oil, the self gravity of the sliding sleeve falls along with the lubricating oil when the lubricating oil is in a shortage, the sliding sleeve falls down to drive the L-shaped rod to automatically open the light touch opening alarm when the oil level is automatically controlled to be opened.

Preferably, the oil inlet is fixedly connected with a filter screen.

Preferably, the top of the cover plate is embedded and fixed with an adding pipe communicated with the inside of the lubricating oil tank.

Preferably, the top of the cover plate is provided with a vent hole communicated with the inside of the oil filling pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the numerical control machine tool main shaft lubricating device, through the cooperation of the PCL controller, the temperature sensor, the quantitative oil feeding assembly, the self-opening assembly and the oil filling pipe, and by combining the principle that larger heat is generated when the supporting bearing lacks oil, the temperature can be automatically detected, the lubricating oil filling flow can be detected, and the opening and closing can be automatically controlled, so that the quantitative lubricating oil filling operation can be performed on the supporting bearing on the numerical control machine tool main shaft main body in a full-automatic mode, the judgment of personnel is not needed, and the filling quantity can be controlled;

2. this digit control machine tool main shaft lubricating arrangement, through lubricating tank, the oil level that sets up float accuse alarm component and audible and visual alarm cooperation, can in time carry out audible and visual alarm voluntarily when lubricating oil in the lubricating tank lacks to this can in time remind personnel to supply lubricating oil voluntarily, effectively prevents to take place to supply the phenomenon that not in time influences oiling work, degree of automation is high.

According to the utility model, through the arrangement of the PCL controller, the temperature sensor, the quantitative oil feeding assembly and the self-opening assembly, the principle that larger heat is generated when the supporting bearing lacks oil is combined, the temperature and the lubricating oil filling flow can be automatically detected and the opening and closing can be automatically controlled, so that the quantitative lubricating oil filling operation can be automatically and timely carried out on the supporting bearing, the phenomenon of untimely filling is prevented, the filling quantity is also convenient to master, and through the arrangement of the oil level floating control alarm assembly, the phenomenon that the oiling work is influenced by untimely filling can be effectively prevented from being generated by automatic timely alarm reminding when the lubricating oil in the lubricating oil tank lacks oil, the intelligent automation degree is high, and the labor cost is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged cross-sectional view of portion A of FIG. 1 in accordance with the present utility model;

fig. 3 is a schematic perspective view of the oil filler tube and sliding sleeve connector of the present utility model.

In the figure: 100. a main shaft body of the numerical control machine tool; 101. a support bearing; 1. a hose; 2. an electromagnetic valve; 3. a liquid flow meter; 4. a Y-shaped tube; 5. a lubrication oil tank; 6. a cover plate; 7. a filler tube; 8. an oil inlet hole; 9. a piston; 10. an electric telescopic rod; 11. a PCL controller; 12. a sliding sleeve; 13. an annular hollow floating plate; 14. touching the closing switch; 15. an L-shaped rod; 16. touching the start switch; 17. an audible and visual alarm.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, the lubrication device for the spindle of the numerically-controlled machine tool provided by the embodiment comprises a main body 100 of the spindle of the numerically-controlled machine tool and two support bearings 101 sleeved on the main body 100 of the numerically-controlled machine tool, wherein the two support bearings 101 are provided with the same lubrication device body, the lubrication device body comprises a lubrication oil tank 5, an adding pipe communicated with the inside of the lubrication oil tank 5 is embedded and fixed at the top of a cover plate 6, the arranged adding pipe is used for adding lubrication oil into the lubrication oil tank 5, the top of the lubrication oil tank 5 is fixedly connected with the cover plate 6, and a PCL controller 11 and an audible-visual alarm 17 are fixedly arranged on the right side of the top of the cover plate 6;

the bottom of the lubricating oil tank 5 is embedded and fixed with a Y-shaped pipe 4, two ends of the bottom of the Y-shaped pipe 4 are communicated and fixed with quantitative oil feeding components, the quantitative oil feeding components are electrically connected with a PCL controller 11, the bottom end of each quantitative oil feeding component is communicated and fixed with the top of the outer ring of the corresponding support bearing 101, the quantitative oil feeding components are used for quantitatively adding lubricating oil into the support bearing 101, the quantitative oil feeding components comprise a liquid flowmeter 3, an electromagnetic valve 2 and a hose 1, two ends of the bottom of the Y-shaped pipe 4 are respectively communicated and fixed with a liquid inlet of the corresponding liquid flowmeter 3, the liquid inlet of the electromagnetic valve 2 is communicated and fixed with a liquid outlet of the corresponding liquid flowmeter 3, the top end of the hose 1 is communicated and fixed with the liquid outlet of the corresponding electromagnetic valve 2, the bottom end of the hose 1 is communicated and fixed with the top of the outer ring of the corresponding support bearing 101, the liquid flowmeter 3 and the electromagnetic valve 2 are electrically connected with the PCL controller 11, the arranged liquid flowmeter 3, the electromagnetic valve 2 and the hose 1 are matched, the lubricating oil flow during filling is detected by the liquid flowmeter 3, the PCL controller 11 is transmitted to the PCL controller 11, and the filling quantity is conveniently controlled by the electromagnetic valve 11 after the automatic filling is set by the PCL controller 11 when the filling quantity is preset by the PCL controller 11;

the inner wall of the bottom of the lubricating oil tank 5 is fixedly connected with an oil filling pipe 7 communicated with the top end of a Y-shaped pipe 4, the inner walls of the two sides of the oil filling pipe 7 are provided with oil inlet holes 8 communicated with the inside of the lubricating oil tank 5, the inside of the oil inlet holes 8 is fixedly connected with a filter screen, the filter screen is used for filtering solid impurities in lubricating oil, a self-opening assembly fixedly arranged on a cover plate 6 is sleeved in the oil filling pipe 7 in a sealing sliding manner, the self-opening assembly is electrically connected with a PCL controller 11, the self-opening assembly is matched with the two oil inlet holes 8, the top of the outer ring of a supporting bearing 101 is fixedly connected with a temperature sensor, the temperature sensor is electrically connected with the PCL controller 11, the temperature sensor is used for detecting the temperature of the corresponding supporting bearing 101 and transmitting the temperature to the PCL controller 11, the supporting bearing is heated by friction when the lubricating is lacked, the PCL controller 11 is automatically opened according to the preset oiling temperature control of the self-opening assembly by utilizing the temperature sensor to detect the temperature, the self-opening assembly is used for automatically removing shielding of the oil inlet holes 8 to carry out oiling operation, the self-opening assembly comprises a piston 9 and an electric telescopic rod 10, the piston 9 is hermetically and slidably sleeved in the oil inlet pipe 7, the piston 9 is positioned between the two oil inlet holes 8 and matched with the two oil inlet holes 8, the electric telescopic rod 10 is fixedly arranged at the top of the cover plate 6, the extending end of the electric telescopic rod 10 extends into the oil inlet pipe 7 and is fixedly connected with the top of the piston 9, the top of the cover plate 6 is provided with a movable perforation for the extending end of the electric telescopic rod 10 to pass through, the electric telescopic rod 10 is electrically connected with the PCL controller 11 and is controlled by the PCL controller 11, the top of the cover plate 6 is provided with a vent hole communicated with the inside of the oil inlet pipe 7, the vent hole is arranged for discharging gas in the oil inlet pipe 7 when the piston 9 moves upwards, when the PCL controller 11 receives the temperature value transmitted by the temperature sensor to reach the preset value, the PCL controller judges the state of oil shortage and controls the electric telescopic rod 10 to automatically reversely start and control the electromagnetic valve 2 to open so as to drive the piston 9 to upwards release the blocking of the oil inlet hole 8, and at the moment, the oil inlet hole 8 of the oil well enters and performs the down-flow oil injection lubrication operation;

the oil level floating control alarm component fixedly connected with the cover plate 6 is arranged on the outer side of the oil filling pipe 7, the oil level floating control alarm component is electrically connected with the audible and visual alarm 17, the oil level floating control alarm component is used for detecting the oil level in the lubricating oil tank 5 and automatically controlling the audible and visual alarm 17 to start alarming in time when the oil level is low, the oil level floating control alarm component comprises a sliding sleeve 12, an annular hollow floating plate 13, an L-shaped rod 15, a tact starting switch 16 and a tact closing switch 14, the sliding sleeve 12 is arranged on the outer side of the oil filling pipe 7 in a sliding sleeve manner, the annular hollow floating plate 13 is fixedly sleeved on the outer side of the sliding sleeve 12 in an adhering manner, the bottom end of the L-shaped rod 15 is fixedly connected with the left side of the top of the sliding sleeve 12, the top of the L-shaped rod 15 extends to the upper side of the cover plate 6, the cover plate 6 is arranged on the L-shaped rod 15 in a sliding sleeve manner, the top of the cover plate 6 is provided with a rectangular sliding hole which is in sliding connection with the outer side of the L-shaped rod 15, the cover plate 6 is sleeved on the L-shaped rod 15 through a rectangular sliding sleeve, the effect of vertical sliding guiding of the L-shaped rod 15 is achieved, the bottom of the tact opening switch 16 is fixedly connected with the top of the cover plate 6, the tact opening switch 16 is positioned on the inner side of the L-shaped rod 15 and is in extrusion fit with the inner wall of the top of the L-shaped rod 15, the tact closing switch 14 is fixedly connected with the inner wall of the top of the cover plate 6, the tact closing switch 14 is positioned above the sliding sleeve 12 and is in extrusion fit with the top of the sliding sleeve 12, the annular hollow floating plate 13, the L-shaped rod 15, the tact opening switch 16 and the tact closing switch 14 are arranged to be matched, the annular hollow floating plate 13 is floated and lifted by lubricating oil, the sliding sleeve 12 is driven to lift according to the oil level, the self gravity of the sliding sleeve 12 falls along with the lubricating oil during oil shortage, and the sliding sleeve 12 falls to drive the L-shaped rod 15 to downwards to press and touch the tact opening switch 16 during the oil shortage, the automatic control audible and visual alarm 17 is realized to automatically start the alarm to remind the personnel, so that the effect of timely and automatically reminding the personnel to supplement oil into the lubricating oil tank 5 when the oil is deficient is achieved.

The application method of the embodiment is as follows: when in use, when the supporting bearing 101 lacks lubrication of lubricating oil, the main body 100 of the main shaft of the digital control machine tool drives the inner ring of the main shaft to rotate, larger heat can be quickly generated, personnel can adjust and control the opening of the electromagnetic valve 2 and the temperature value for forward starting of the electric telescopic rod 10 by using the PCL controller 11 according to the actual filling condition, and adjust and control the closing of the electromagnetic valve 2 and the flow value for reverse starting of the electric telescopic rod 10 by using the PCL controller 11 according to the requirement of the required filling quantity, the temperature sensor detects the temperature of the supporting bearing 101 and transmits the temperature to the PCL controller 11, when the preset filling temperature is reached, the PCL controller 11 controls the opening of the electromagnetic valve 2 and the forward starting of the electric telescopic rod 10, the electric telescopic rod 10 drives the piston 9 to release the shielding of the two oil inlet holes 8 upwards, and at the moment, the lubricating oil in the lubricating oil tank 5 enters the oil filling pipe 7 through the two oil inlet holes 8, then the lubricating oil is downwards shunted into the two liquid flow meters 3 through the Y-shaped pipe 4 and downwards shunted into the two support bearings 101 through the two electromagnetic valves 2 and the two hoses 1 in sequence to carry out lubricating oil filling operation, when the lubricating oil flows through the corresponding liquid flow meters 3, the liquid flow meters 3 detect the lubricating oil flow and transmit the lubricating oil flow to the PCL controller 11, when the preset filling amount is reached, the PCL controller 11 controls the electromagnetic valves 2 to close and stop the filling operation, controls the electric telescopic rods 10 to start forward, so that the driving pistons 9 downwards block the two oil inlet holes 8, two plugs are formed at the electromagnetic valves 2 and the oil inlet holes 8, the lubricating oil leakage risk is prevented, the quantitative lubricating oil filling operation is conveniently carried out on the support bearings 101 on the main shaft main body 100 of the full-automatic digital control machine tool by detecting the temperature and the lubricating oil filling flow and automatically controlling the opening and closing modes, the intelligent degree is high, the phenomenon of untimely filling is prevented without personnel judgment, and the filling quantity can be controlled;

when the oil level of the lubricating oil in the lubricating oil tank 5 is lowered, at the moment, under the action of self gravity, the sliding sleeve 12 moves downwards and drives the annular hollow floating plate 13 to move downwards, the sliding sleeve 12 drives the L-shaped rod 15 to move downwards, the L-shaped rod 15 moves downwards to be pressed with the light-touch opening switch 16, the light-touch opening switch 16 is touched and controls the audible and visual alarm 17 to be opened for audible and visual alarm, a person can supplement the lubricating oil in the lubricating oil tank 5 by hearing alarm sounds, the annular hollow floating plate 13 can float upwards along with the rising of the lubricating oil level along with the supplement, at the moment, the annular hollow floating plate 13 drives the sliding sleeve 12 to slide upwards in the oil filling pipe 7, the sliding sleeve 12 moves upwards to be pressed with the light-touch closing switch 14 to be pressed and control the audible and visual alarm 17 to be closed, and thus the oil supplementing work can be stopped, the person can be reminded of the oil supplementing when the lubricating oil in the lubricating oil tank 5 is short, the phenomenon that the oil supplementing is not timely effected can be effectively prevented, and the degree of automation is high.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a digit control machine tool main shaft lubricating arrangement, includes digit control machine tool main shaft main part (100) and suit two supporting bearings (101) on digit control machine tool main shaft main part (100), installs same lubricating arrangement body on two supporting bearings (101), its characterized in that: the lubricating device body comprises a lubricating oil tank (5), a cover plate (6) is fixedly connected to the top of the lubricating oil tank (5), and a PCL controller (11) and an audible-visual annunciator (17) are fixedly arranged on the right side of the top of the cover plate (6);

the bottom of the lubricating oil tank (5) is embedded and fixed with a Y-shaped pipe (4), both ends of the bottom of the Y-shaped pipe (4) are communicated and fixed with quantitative oil feeding components, the quantitative oil feeding components are electrically connected with a PCL controller (11), and the bottom ends of the quantitative oil feeding components are communicated and fixed with the tops of the outer rings of the corresponding support bearings (101);

the automatic oil filling device is characterized in that an oil filling pipe (7) communicated with the top end of a Y-shaped pipe (4) is fixedly connected to the inner wall of the bottom of the lubricating oil tank (5), oil inlet holes (8) communicated with the inside of the lubricating oil tank (5) are formed in the inner walls of two sides of the oil filling pipe (7), a self-opening assembly fixedly installed with a cover plate (6) is sleeved in the oil filling pipe (7) in a sealing sliding mode, the self-opening assembly is electrically connected with a PCL controller (11), the self-opening assembly is matched with the two oil inlet holes (8), a temperature sensor is fixedly connected to the top of an outer ring of a supporting bearing (101), and the temperature sensor is electrically connected with the PCL controller (11);

the outside of the oil filling pipe (7) is provided with an oil level floating control alarm assembly fixedly connected with the cover plate (6), and the oil level floating control alarm assembly is electrically connected with an audible and visual alarm (17).

2. The numerical control machine tool spindle lubrication device according to claim 1, wherein: the quantitative oil feeding assembly comprises a liquid flowmeter (3), an electromagnetic valve (2) and a hose (1), wherein two ends of the bottom of a Y-shaped pipe (4) are respectively communicated and fixed with a liquid inlet of the corresponding liquid flowmeter (3), the liquid inlet of the electromagnetic valve (2) is communicated and fixed with a liquid outlet of the corresponding liquid flowmeter (3), the top end of the hose (1) is communicated and fixed with a liquid outlet of the corresponding electromagnetic valve (2), the bottom end of the hose (1) is communicated and fixed with the top of an outer ring of the corresponding support bearing (101), and the liquid flowmeter (3) and the electromagnetic valve (2) are electrically connected with a PCL controller (11).

3. The numerical control machine tool spindle lubrication device according to claim 2, wherein: the automatic opening assembly comprises a piston (9) and an electric telescopic rod (10), wherein the piston (9) is hermetically sleeved in the oil filling pipe (7) in a sliding manner, the piston (9) is positioned between two oil inlet holes (8) and matched with the two oil inlet holes (8), the electric telescopic rod (10) is fixedly installed at the top of the cover plate (6), the extending end of the electric telescopic rod (10) extends into the oil filling pipe (7) and is fixedly connected with the top of the piston (9), and the electric telescopic rod (10) is electrically connected with the PCL controller (11) and is controlled by the PCL controller (11).

4. A numerical control machine tool spindle lubrication device according to claim 3, wherein: the oil level floating control alarm assembly comprises a sliding sleeve (12), an annular hollow floating plate (13), an L-shaped rod (15), a tact opening switch (16) and a tact closing switch (14), wherein the sliding sleeve (12) is arranged on the outer side of an oil filling pipe (7) in a sliding mode, the annular hollow floating plate (13) is arranged on the outer side of the sliding sleeve (12) in a bonding mode in a sleeved mode, the bottom end of the L-shaped rod (15) is fixedly connected with the left side of the top of the sliding sleeve (12), the top of the L-shaped rod (15) extends to the top of a cover plate (6), the cover plate (6) is arranged on the L-shaped rod (15) in a sliding mode in a sleeved mode, the bottom of the tact opening switch (16) is fixedly connected with the top inner wall of the L-shaped rod (15), the tact closing switch (14) is fixedly connected with the top inner wall of the cover plate (6), and the tact closing switch (14) is located above the sliding sleeve (12) and is in a pressing mode with the top of the sliding sleeve (12).

5. The numerical control machine tool spindle lubrication device according to claim 1, wherein: the inside of the oil inlet hole (8) is fixedly connected with a filter screen.

6. The numerical control machine tool spindle lubrication device according to claim 1, wherein: the top of the cover plate (6) is embedded and fixed with an adding pipe communicated with the inside of the lubricating oil tank (5).

7. A numerical control machine tool spindle lubrication device according to claim 3, wherein: the top of the cover plate (6) is provided with a vent hole communicated with the inside of the oil filling pipe (7).