Lubricating mechanism of numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool lubricating mechanism which comprises a machine frame and a movable frame which transversely moves along the machine frame through a guide rail assembly, and a self-lubricating structure is arranged between the guide rail assembly and the movable frame. The guide rail assembly comprises a guide shaft arranged on the rack and a guide seat arranged on the movable frame, and the guide seat is arranged on the guide shaft in a sleeving mode and can move in the axial direction of the guide shaft; the self-lubricating structure comprises a connecting ring arranged on one side of the guide seat, the guide shaft is concentrically located at the inner ring position of the connecting ring, a connecting rod capable of doing telescopic movement in the direction of the guide shaft is arranged on the connecting ring, a liquid injection cavity is formed in the connecting rod and provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are communicated with the guide shaft. A sponge is arranged at the position, located at the liquid outlet, of the connecting rod, the sponge abuts against the guide shaft, a liquid storage box is arranged on the connecting ring, the connecting rod is movably inserted into an inner cavity of the liquid storage box, and a driving component for driving the connecting rod to move close to or away from the guide shaft is arranged on the connecting ring.

Description

Technical Field

[0001] The utility model particularly relates to a lubrication mechanism for a numerical control machine tool. Background Art

[0002] With the continuous development of social economy and the continuous progress of modern technology, the technology of machine tool equipment has also made great progress. The machine tool lubrication device is a device used to provide lubrication for each moving part of the machine tool. The main function of the machine tool lubrication device is to reduce the friction between the moving parts of the machine tool, reduce wear, and extend the service life of the machine tool. It is a necessary structure to ensure the normal operation of the machine tool. The guide rail assembly of the machine tool is an important guiding component on the machine tool. The guide rail assembly needs to move relative to the moving parts frequently due to guiding. Therefore, the lubrication operation of the machine tool guide rail assembly is very important.

[0003] However, most of the existing machine tool lubrication devices on the market at present need to add lubricating oil manually during the lubrication operation, which is not convenient to control the usage amount of the lubricating oil, may cause waste of the lubricating oil, and may cause an excessive lubricating film formed by too much lubricating oil on the surface of the guide rail assembly, resulting in a reduction in the lubrication effect, instead increasing the friction and wear of the guide rail assembly, and cannot meet the practical needs. Content of the Utility Model

[0004] Aiming at the defects existing in the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a lubrication mechanism for a numerical control machine tool.

[0005] A lubrication mechanism for a numerical control machine tool includes a machine frame and a moving frame that moves horizontally along the machine frame through a guide rail assembly. A self-lubricating structure is arranged between the guide rail assembly and the moving frame.

[0006] The guide rail assembly includes a guide shaft arranged on the machine frame and a guide seat arranged on the moving frame. The guide seat is sleeved on the guide shaft and can move axially along the guide shaft.

[0007] The self-lubricating structure includes a connecting ring arranged on one side of the guide seat. The guide shaft is concentrically located at the inner ring of the connecting ring. A connecting rod that can make telescopic movement in the direction of the guide shaft is arranged on the connecting ring. A liquid injection cavity is arranged inside the connecting rod. The liquid injection cavity is respectively provided with a liquid inlet and a liquid outlet. A sponge is arranged on the connecting rod at the liquid outlet. The sponge abuts against the guide shaft. A liquid storage tank is arranged on the connecting ring. The connecting rod is movably inserted into the inner cavity of the liquid storage tank. By moving the connecting rod relative to the liquid storage tank, the liquid inlet is connected or not connected to the inner cavity of the liquid storage tank. A driving member is arranged on the connecting ring to drive the connecting rod to move closer to or away from the guide shaft.

[0008] In one embodiment, the driving member includes a spring and a double-headed cylinder. A connecting plate is provided on one side of the connecting ring, and the liquid storage tank is arranged on the connecting plate. The connecting rod is movably inserted through the connecting plate and the liquid storage tank. A flange is arranged on the circumferential side of the connecting rod. The spring is sleeved on the connecting rod and abuts between the flange and the connecting plate. The sponge on the connecting rod is tightened in a connected state with the guide shaft by the spring. At this time, the liquid inlet is located inside the liquid storage tank to make the two communicate with each other. The double-headed cylinder is arranged on the connecting ring, and its driving end correspondingly abuts against the flange on the axial side of the connecting rod. The connecting rod is driven by the double-headed cylinder to move, causing the sponge to separate from the guide shaft. At this time, the liquid inlet is separated from the inner cavity of the liquid storage tank, causing the two to be not in communication with each other.

[0009] In one embodiment, there are two self-lubricating structures, which are respectively distributed on both sides of the guide shaft. The two driving shafts of the double-headed cylinder respectively abut against the connecting rods of the two self-lubricating structures one by one.

[0010] In one embodiment, the connecting ring is rotatably arranged on the guide seat, and a transmission member capable of driving the connecting ring to rotate as the guide seat moves is further provided between the frame and the connecting ring.

[0011] In one embodiment, the transmission member includes a rack and a transmission gear meshing with the rack. The rack is fixedly arranged on the frame and is arranged parallel to the length direction of the guide shaft. The transmission gear is rotatably arranged on the guide seat. A first bevel gear is arranged on one side of the transmission gear coaxially, and a bevel gear ring meshing with the first bevel gear is arranged coaxially on one side of the connecting ring.

[0012] In one embodiment, sealing rings are respectively arranged at the positions where the connecting rod and the liquid storage tank cooperate with each other.

[0013] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0014] The present invention drives the connecting rod to make telescopic movement relative to the guide shaft through the driving member, so that the sponge on the connecting rod moves accordingly and abuts against the guide shaft. The sponge block adsorbs the lubricating oil and makes frictional contact with the guide shaft to extrude the lubricating oil, completing the lubrication operation of the guide shaft and effectively avoiding excessive lubricating liquid being coated on the guide shaft through the sponge. And by driving the connecting rod to move through the driving member, the pressing and separation of the sponge and the guide shaft are realized. Furthermore, the lubricating liquid coated on the guide shaft is effectively prevented from being re-adsorbed into the sponge after the sponge is lubricated. And the connecting rod is driven by the driving member to move relative to the liquid storage tank, which can realize the opening and closing of the liquid outlet of the liquid storage tank. The structure is simple and meets the use requirements. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a lubrication mechanism of a numerical control machine tool in an embodiment of the present invention;

[0016] Figure 2 In an embodiment of the present utility model Figure 1 is an enlarged schematic view of part A;

[0017] Figure 3 is one of the partial sectional structure schematic views of a lubrication mechanism of a numerical control machine tool in an embodiment of the present utility model;

[0018] Figure 4 is the second of the partial sectional structure schematic views of a lubrication mechanism of a numerical control machine tool in an embodiment of the present utility model. Detailed implementation manners

[0019] The present utility model will be further described below in conjunction with the accompanying drawings and detailed implementation manners:

[0020] As Figures 1 to 4 shown, an embodiment of the present utility model preferably provides a lubrication mechanism for a numerical control machine tool, including a machine frame 1 and a moving frame 2 that moves horizontally along the machine frame 1 through a guide rail assembly. A self-lubricating structure is provided between the guide rail assembly and the moving frame 2; the guide rail assembly includes a guide shaft 3 provided on the machine frame 1 and a guide seat 4 provided on the moving frame 2. The guide seat 4 is sleeved on the guide shaft 3 and can move axially along the guide shaft 3; the self-lubricating structure includes a connecting ring 5 provided on one side of the guide seat 4. The guide shaft 3 is concentrically located inside the inner ring of the connecting ring 5. The connecting ring 5 is provided with a connecting rod 6 that can move telescopically in the direction of the guide shaft 3. The connecting rod 6 has a liquid injection cavity 7 inside. The liquid injection cavity 7 is respectively provided with a liquid inlet 71 and a liquid outlet 72. A sponge 8 is provided on the connecting rod 6 at the liquid outlet 72. The sponge 8 abuts against the guide shaft 3. A liquid storage tank 9 is provided on the connecting ring 5. The connecting rod 6 is movably inserted into the inner cavity of the liquid storage tank 9. By moving the connecting rod 6 relative to the liquid storage tank 9, the liquid inlet 71 is connected or not connected to the inner cavity of the liquid storage tank 9. A driving member 10 is provided on the connecting ring 5 to drive the connecting rod 6 to move closer to or away from the guide shaft 3.

[0021] Specifically, the driving member drives the connecting rod to move telescopically relative to the guide shaft, so that the sponge located on the connecting rod moves accordingly and abuts against the guide shaft. The sponge adsorbs lubricating oil and frictional contact with the guide shaft to extrude lubricating oil, completing the lubrication operation of the guide shaft and effectively avoiding excessive lubricating liquid being coated on the guide shaft through the sponge; and by driving the connecting rod to move by the driving member, the pressing and separation of the sponge and the guide shaft are realized, and then the lubricating liquid coated on the guide shaft is effectively prevented from being re-adsorbed into the sponge after lubrication; and the connecting rod is driven by the driving member to move relative to the liquid storage tank to realize the opening and closing of the liquid outlet of the liquid storage tank, and the structure is simple and meets the use requirements.

[0022] Furthermore, the driving member 10 includes a spring 11 and a double-headed cylinder 12. A connecting plate 13 is provided on one side of the connecting ring 5. The liquid storage tank 9 is arranged on the connecting plate 13. The connecting rod 6 is movably inserted through the connecting plate 13 and the liquid storage tank 9. A flange 14 is arranged on the circumferential side of the connecting rod 6. The spring 11 is sleeved on the connecting rod 6 and abuts between the flange 14 and the connecting plate 13. The sponge 8 on the connecting rod 6 is tightened in a connected state with the guide shaft 3 by the spring 11. At this time, the liquid inlet 71 is located inside the liquid storage tank 9 so that the two are in communication with each other. The double-headed cylinder 12 is arranged on the connecting ring 5 and its driving end correspondingly abuts on the flange 14 located on the axial side of the connecting rod 6. The connecting rod 6 is driven to move by the double-headed cylinder 12 so that the sponge 8 is separated from the guide shaft 3. At this time, the liquid inlet 71 is separated from the inside of the liquid storage tank 9 so that the two are not in communication with each other.

[0023] Specifically, through the elastic force of the spring, the sponge located on the connecting rod is kept in a pressing state against the guide shaft. At this time, the liquid inlet of the connecting rod is located inside the liquid storage tank and is in communication with each other. Furthermore, the lubricating liquid in the liquid storage tank flows to the sponge successively through the liquid inlet, the liquid injection cavity and the liquid outlet, and then through the friction and extrusion between the sponge and the guide shaft, the lubricating liquid is extruded and coated on the guide shaft to realize the lubrication work of the guide shaft.

[0024] After the lubrication of the guide shaft is completed, the double-headed cylinder works again to make its driving end move and abut on the connecting rod, so as to drive the connecting rod to move and cause the sponge to be separated from the abutment of the guide shaft. Furthermore, it effectively avoids the lubricating liquid on the guide shaft being re-adsorbed by the sponge and not achieving the lubrication effect. At this time, due to the movement of the connecting rod, the liquid inlet moves accordingly and is separated from the inside of the liquid storage tank to form a non-connected structure. Furthermore, the opening and closing of the communication between the liquid inlet and the inside of the liquid storage tank are realized synchronously by the movement of the connecting rod.

[0025] Furthermore, there are two self-lubricating structures, which are respectively distributed on both sides of the guide shaft 3. The two driving shafts of the double-headed cylinder 12 respectively abut on the connecting rods 6 of the two self-lubricating structures. Specifically, by setting two self-lubricating structures, the coating lubrication work on both sides of the guide shaft is realized.

[0026] Furthermore, the connecting ring 5 is rotatably arranged on the guide seat 4. A transmission member 21 capable of driving the connecting ring 5 to rotate as the guide seat 4 moves is further provided between the frame 1 and the connecting ring 5. Furthermore, through the transmission member, the sponge is used to perform friction extrusion coating on the circumference of the guide shaft.

[0027] Further, the transmission member 21 includes a rack 22 and a transmission gear 23 meshing with the rack 22. The rack 22 is fixedly arranged on the frame 1 and is arranged parallel to the length direction of the guide shaft 3. The transmission gear 23 is rotatably arranged on the guide seat 4. A first bevel gear 24 is arranged on one side of the transmission gear 23 coaxially. A bevel gear ring 25 meshing with the first bevel gear 24 is arranged on one side of the connecting ring 5 coaxially. Specifically, when the guide seat is driven to move axially along the guide shaft, the transmission gear located on the guide seat meshes with the rack of the frame, causing the transmission gear to rotate, and then through the transmission of the first bevel gear and the second bevel gear, the rotation of the connecting ring is realized.

[0028] Further, sealing rings are respectively arranged at the positions where the connecting rod 6 and the liquid storage tank 9 cooperate with each other.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lubrication mechanism for a numerically controlled machine tool, comprising a frame (1) and a movable frame (2) which moves laterally along the frame (1) via a guide rail assembly, characterized in that: A self-lubricating structure is provided between the guide rail assembly and the movable frame (2); A guide rail assembly, comprising a guide shaft (3) arranged on a frame (1) and a guide seat (4) arranged on a movable frame (2), wherein the guide seat (4) is sleeved on the guide shaft (3) and can move axially along the guide shaft (3); The self-lubricating structure comprises a connecting ring (5) arranged on one side of a guide seat (4), the guide shaft (3) being cocentrically located at the inner ring of the connecting ring (5), the connecting ring (5) being provided with a connecting rod (6) capable of telescopic movement in the direction of the guide shaft (3), the connecting rod (6) having a liquid injection cavity (7) therein, the liquid injection cavity (7) being respectively provided with a liquid inlet (71) and a liquid outlet (72), the connecting rod (6) being provided at the liquid outlet (72) A sponge (8) is provided, wherein the sponge (8) is in contact with the guide shaft (3); a liquid storage tank (9) is provided on the connecting ring (5); the connecting rod (6) is movably inserted into the inner cavity of the liquid storage tank (9); the connecting rod (6) is moved relative to the liquid storage tank (9) so that the liquid inlet (71) and the inner cavity of the liquid storage tank (9) are connected or disconnected; and a driving member (10) is provided on the connecting ring (5) for driving the connecting rod (6) to move closer to or farther from the guide shaft (3).

2. A lubricating mechanism for a CNC machine tool according to claim 1, characterized in that: The driving member (10) comprises a spring (11) and a double-headed cylinder (12); a connecting plate (13) is provided on one side of the connecting ring (5); the liquid storage tank (9) is provided on the connecting plate (13); the connecting rod (6) is movably plugged into the connecting plate (13) and the liquid storage tank (9); a flange (14) is provided on the peripheral side of the connecting rod (6); the spring (11) is sleeved on the connecting rod (6) and abuts between the flange (14) and the connecting plate (13); and the connecting rod (6) is movable by the spring (11). The sponge (8) on (6) is tightly connected to the guide shaft (3), and at this time, the liquid inlet (71) is located in the inner cavity of the liquid storage tank (9) so that the two are connected to each other; the double-headed cylinder (12) is arranged on the connecting ring (5) and its driving end is correspondingly abutted against the flange (14) located on the axial side of the connecting rod (6), and the double-headed cylinder (12) is used to drive the connecting rod (6) to move so that the sponge (8) is separated from the guide shaft (3), and at this time, the liquid inlet (71) is separated from the inner cavity of the liquid storage tank (9) so that the two are not connected to each other.

3. A lubricating mechanism for a CNC machine tool according to claim 2, characterized in that: The self-lubricating structures are provided in two and are respectively distributed on both sides of the guide shaft (3). The two driving shafts of the double-headed cylinder (12) are respectively abutted against the connecting rods (6) of the two self-lubricating structures.

4. A lubricating mechanism for a CNC machine tool according to claim 1, characterized in that: The connecting ring (5) is rotatably arranged on the guide seat (4), and a transmission component (21) capable of driving the connecting ring (5) to rotate along with the movement of the guide seat (4) is also provided between the frame (1) and the connecting ring (5).

5. A lubricating mechanism for a CNC machine tool according to claim 4, characterized in that: The transmission component (21) comprises a rack (22) and a transmission gear (23) meshing with the rack (22); the rack (22) is fixedly arranged on the frame (1) and arranged parallel to the length direction of the guide shaft (3); the transmission gear (23) is rotatably arranged on the guide seat (4); a first bevel tooth (24) is arranged on one side of the transmission gear (23) coaxially with the central axis; and a bevel tooth ring (25) meshing with the first bevel tooth (24) is arranged on one side of the connecting ring (5) coaxially with the central axis.

6. A lubricating mechanism for a CNC machine tool according to claim 1, characterized in that: Sealing rings are respectively provided at the matching positions between the connecting rod (6) and the liquid storage tank (9).

Images