Automatic lubricating structure of numerical control machine tool

Abstract

This utility model discloses an automatic lubrication structure for CNC machine tools, specifically relating to the field of CNC machine tool guideway lubrication technology. It includes a machine tool guideway installed on a CNC machine tool, with a slider slidably connected to the guideway. A lubrication block is fixed to one end of the slider, and sealing blocks to prevent lubricant leakage are fixed to one side of the lubrication block and the other end of the slider. The lubrication block includes a housing and an oil outlet core, which are adapted to the machine tool guideway. Both sides of the oil outlet core have inclined top sliders that slide within the housing. An inclined groove is formed on the side of the two inclined top sliders that are far apart, and a sliding rod is inserted into the inclined groove. Horizontal grooves adapted to the sliding rods are formed on both side walls of the housing. This utility model achieves lubrication by utilizing the actual movement of the slider to push a perforated plate to squeeze the lubricant adsorbed in the sponge. Furthermore, lubrication will not occur if the slider is not moving, thus avoiding waste of lubricant.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool guideway lubrication technology, and more specifically to an automatic lubrication structure for CNC machine tools. Background Technology

[0002] A CNC machine tool is an automated machine tool controlled by a computer program, capable of machining complex parts with high precision and efficiency. Lubrication is required in the following parts of a CNC machine tool: spindle system, guideways, ball screws, feed transmission system, tool magazine and tool changer, hydraulic system, and other auxiliary components (bearings, chains, etc.).

[0003] For the lubrication of sliding guide pairs, the common technical method in the present technology is to automatically apply lubricating oil to the slider periodically. This means that the guide pair will be lubricated periodically regardless of whether it is in use, which inevitably leads to the waste of lubricating oil. Moreover, periodic application of lubricating oil can also cause oil film to accumulate on the guide and slider, increasing the thickness of the oil film. It is known that if the lubricating oil on the guide and slider is too thick, it can also easily attract dust, increase frictional resistance, and thus affect the service life of the machine tool guide pair. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides an automatic lubrication structure for CNC machine tools. By using the actual movement of the slider to push the perforated plate to squeeze the lubricating oil adsorbed in the sponge, the lubrication effect is achieved. If the slider is not running, lubrication will not be performed, thus avoiding the waste of lubricating oil and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic lubrication structure for a CNC machine tool, including a machine tool guide rail installed on the CNC machine tool, a slider slidably connected on the machine tool guide rail, a lubrication block fixed at one end of the slider, and a sealing block to prevent lubricating oil leakage fixed on one side of the lubrication block and the other end of the slider.

[0006] The lubrication block includes a housing and an oil outlet core. Both the oil outlet core and the housing are adapted to the machine tool guide rail. The oil outlet core has inclined top sliders on both sides that slide inside the housing. An inclined groove is opened on the side of the two inclined top sliders that are far apart. A slide rod is inserted into the inclined groove. Horizontal grooves adapted to the slide rods are opened on both sides of the housing. After the slide rod slides along the horizontal groove and the inclined groove, it pushes the inclined top slider to move upward inside the housing to squeeze the lubricating oil from the inside of the housing into the oil outlet core, and then flows out from the through hole in the inner wall of the oil outlet core to achieve lubrication.

[0007] In a preferred embodiment, the inner top of the oil outlet core communicates with the inner interior of the outer shell. The inner top of the oil outlet core is provided with a perforated plate. The top of the perforated plate is provided with a sponge for absorbing lubricating oil. The top of the sponge is provided with a first fixing plate fixed to the inner wall of the outer shell. The top of the first fixing plate is provided with a second fixing plate fixed to the inner wall of the outer shell. The lubricating oil is stored on the top of the second fixing plate. A sealing rod is inserted into the inner interior of the second fixing plate and the inner interior of the first fixing plate. The bottom end of the sealing rod passes through the sponge and is fixed to the top of the perforated plate. The top of the two sealing rods on both sides is fixed with a vertical rod. The top end of the vertical rod passes through the top wall of the outer shell and is fixedly connected with a bent rod. The bottom end of the bent rod is fixed to the top of the inclined slide block. When the inclined slide block moves upward, it simultaneously drives the bent rod, vertical rod, sealing rod and perforated plate to move upward to squeeze the sponge, so that the lubricating oil in the sponge can be squeezed out.

[0008] In a preferred embodiment, the sealing rod consists of a rod body, a lower plug, and an upper plug. The upper plug and the lower plug are mirror images of each other. The upper plug is fixed to the top of the rod body, and the lower plug is fixed to the middle of the rod body. The second fixing plate has a plurality of oil outlet holes a that are adapted to the upper plug, and the first fixing plate has a plurality of oil outlet holes b that are adapted to the lower plug.

[0009] In a preferred embodiment, two springs are arranged side by side on the side of the bottom end of the bent rod near the oil outlet core. The bottom end of the spring is fixed to the inclined top slider, and the top end of the spring is fixed to the top end of the inner wall of the outer casing.

[0010] In a preferred embodiment, the end of the slide bar away from the inclined slide block is machined into a spherical shape, and a fixing block is fixed to one end of the machine tool guide rail. Guide rods for pushing the slide bar are fixed to both the front and rear sides of the fixing block.

[0011] In a preferred embodiment, the top and bottom of the end of the slide bar near the inclined top slider are fixed with limiting protrusions, and the side wall of the outer shell is machined with a limiting groove that matches the side wall of the limiting protrusion.

[0012] In a preferred embodiment, an oil injection pipe is fixed to the top of the side of the housing away from the slider. One end of the oil injection pipe extends into the interior of the housing, and the other end of the oil injection pipe is threaded with a rubber plug for sealing the opening of the oil injection pipe. By installing the rubber plug in the opening of the oil injection pipe, lubricating oil leakage can be prevented.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. By using the back-and-forth movement of the slider on the machine tool guide rail to push the slide rod, the top of the sealing rod is moved out of the second fixed plate, so that the lubricating oil can flow into the space between the second fixed plate and the first fixed plate. Similarly, the translation of the slider squeezes the lubricating oil adsorbed in the sponge, so that it can pass through the oil outlet core and contact the machine tool guide rail and slider of the CNC machine tool, thereby achieving the effect of lubricating the machine tool guide rail and slider. Moreover, the entire lubrication process is determined by the actual movement frequency of the slider, so as to avoid the problem of lubricating oil waste caused by lubrication during non-operation periods.

[0015] 2. The sponge can also absorb excess lubricating oil to prevent excess lubricating oil from being released from the oil outlet a at once. This can prevent the lubricating oil film on the slider and machine tool guide rail from becoming too thick, and can also prevent dust from adhering to the excessively thick lubricating oil film, which would increase friction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the slider and lubrication block of this utility model;

[0018] Figure 3 This is a schematic diagram of the lubricating block structure of this utility model;

[0019] Figure 4 This is a cross-sectional view of the lubricating block of this utility model;

[0020] Figure 5 For the present utility model Figure 4 Enlarged view of A in the middle;

[0021] Figure 6 This is a structural diagram of the perforated plate, sponge, first fixing plate, and second fixing plate of this utility model.

[0022] The attached diagram is labeled as follows: 1. Machine tool guide rail; 2. Slider; 3. Lubrication block; 4. Sealing block; 5. Fixing block; 6. Guide rod;

[0023] 31. Outer shell; 32. Oil outlet core; 33. Orifice plate; 34. Sponge; 35. First fixing plate; 36. Second fixing plate; 37. Sealing rod; 371. Rod body; 372. Lower plug; 373. Upper plug; 38. Vertical rod; 39. Bent rod; 310. Inclined top slider; 311. Inclined slide groove; 312. Slide rod; 313. Horizontal slide groove; 314. Spring; 315. Oil injection pipe; 316. Limiting protrusion. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Refer to the instruction manual appendix Figure 1-6 This utility model provides an automatic lubrication structure for CNC machine tools, including a machine tool guide rail 1 installed on the CNC machine tool. A slider 2 is slidably connected to the machine tool guide rail 1. A lubricating block 3 is fixed to one end of the slider 2. A sealing block 4 to prevent lubricating oil leakage is fixed to one side of the lubricating block 3 and the other end of the slider 2. The lubricating block 3 used in this utility model will lubricate the machine tool guide rail 1 and the slider 2 according to the actual operation of the slider 2. That is to say, if the slider 2 does not slide on the machine tool guide rail 1, the lubricating block 3 will not release lubricating oil, thereby avoiding the waste of lubricating oil.

[0026] Specifically, such as Figure 2-6 As shown: The lubrication block 3 includes a housing 31 and an oil outlet core 32. The top of the oil outlet core 32 is connected to the inside of the housing 31. The oil outlet core 32 and the housing 31 are adapted to the machine tool guide rail 1. Both sides of the oil outlet core 32 are provided with inclined top sliders 310 that slide inside the housing 31. An inclined slide groove 311 is opened on the side of the two inclined top sliders 310 that are far apart. A slide rod 312 is inserted into the inclined slide groove 311. Horizontal slide grooves 313 adapted to the slide rod 312 are opened on both sides of the housing 31.

[0027] To prevent the slide bar 312 from detaching from the housing 31, such as Figure 6 As shown, limiting protrusions 316 are fixed at the top and bottom of the end of the slide rod 312 near the inclined top slider 310. The side wall of the housing 31 is machined with a limiting groove that matches the side wall of the limiting protrusion 316. The limiting protrusion 316 is stuck in the limiting groove of the side wall of the housing 31, so as to allow the slide rod 312 to slide in the horizontal slide groove 313 while preventing it from falling out of the side wall of the housing 31, achieving two goals at once.

[0028] An orifice plate 33 is provided at the top of the oil outlet core 32. A sponge 34 for absorbing lubricating oil is provided at the top of the orifice plate 33. A first fixing plate 35 fixed to the inner wall of the outer shell 31 is provided at the top of the sponge 34. A second fixing plate 36 fixed to the inner wall of the outer shell 31 is provided at the top of the first fixing plate 35. The lubricating oil is stored at the top of the second fixing plate 36. When the lubricating oil at the top of the second fixing plate 36 is used up, new lubricating oil can be injected into the top of the second fixing plate 36 through an oil injection pipe 315 installed on the side of the outer shell 31 away from the slider 2. One end of the oil injection pipe 315 extends into the interior of the outer shell 31, and the other end of the oil injection pipe 315 is threaded with a rubber plug for preventing lubricating oil leakage. The rubber plug can seal the opening of the oil injection pipe 315 without adding lubricating oil, thereby preventing oil leakage.

[0029] A sealing rod 37 is also inserted inside the second fixing plate 36 and the first fixing plate 35. The bottom end of the sealing rod 37 penetrates the sponge 34 and is fixed to the top of the orifice plate 33. In this embodiment, the sealing rod 37 is composed of a rod body 371, a lower plug 372 and an upper plug 373. The upper plug 373 and the lower plug 372 are both set in a frustum shape and are mirror images of each other. The upper plug 373 is fixed to the top of the rod body 371 and the lower plug 372 is fixed to the middle of the rod body 371. The second fixing plate 36 has a plurality of oil outlet holes a that are adapted to the upper plug 373 and the first fixing plate 35 has a plurality of oil outlet holes b that are adapted to the lower plug 372.

[0030] Furthermore, such as Figure 4 and Figure 6 As shown: Two sealing rods 37 located on both sides have vertical rods 38 fixed to their tops. The top of each vertical rod 38 passes through the top wall of the outer casing 31 and is fixedly connected to a bent rod 39. The bottom of the bent rod 39 is fixed to the top of the inclined slide block 310. During use, as the slide block 2 moves towards one end of the machine tool guide rail 1, it pushes the slide rod 312, causing the slide rod 312 to slide along the horizontal slide groove 313 and the inclined slide groove 311. The slide rod 312 moves from the top to the bottom of the inclined slide groove 311, pushing the inclined slide block 310 upwards. The upward movement of 310 will also simultaneously drive the bent rod 39, the vertical rod 38 and the sealing rod 37 to move upward, thereby driving the orifice plate 33 connected to the sealing rod 37 to move upward, so that the upper plug 373 will first move out of the oil outlet a. At this time, the lubricating oil on the top of the second fixed plate 36 will pass through the oil outlet a and move to the top of the first fixed plate 35. At the same time, some lubricating oil will pass through the oil outlet b and be absorbed by the sponge 34. Then, the slider 2 continues to move until the lower plug 372 blocks the oil outlet b. At this time, the slider 2 also moves to one end of the machine tool guide rail 1.

[0031] Next, slider 2 moves in the opposite direction, that is, towards the other end of machine tool guide rail 1. In order to enable the inclined slider 310 to move in the opposite direction during this process, two springs 314 are arranged side by side at the bottom of the bent rod 39 near the oil outlet core 32. The bottom of the spring 314 is fixed to the inclined slider 310, and the top of the spring 314 is fixed to the top of the inner wall of the outer shell 31. When the inclined slider 310 moves upward, it will compress the spring 314. Therefore, when slider 2 moves in the opposite direction, the compressed spring 314 will push the inclined slider 310 downward under its own elastic force, so that the upper plug 373 can be sealed in the oil outlet a. At this time, the lubricating oil on the top of the first fixed plate 35 will be absorbed by the sponge 34.

[0032] When the slider 2 moves toward one end of the machine tool guide rail 1 again, it will squeeze the sponge 34 again, thereby squeezing out the lubricating oil absorbed in the sponge 34 and allowing the lubricating oil to enter the oil outlet core 32. Then, it will move out through the through hole on the inner wall of the oil outlet core 32 and contact the surface of the machine tool guide rail 1 and the inner wall of the slider 2, thereby achieving the effect of lubricating the machine tool guide rail 1 and the slider 2.

[0033] In the above process, to facilitate the movement of the slide bar 312, the end of the slide bar 312 away from the inclined slide block 310 is specially machined into a spherical shape. A fixing block 5 is also fixed to one end of the machine tool guide rail 1. Guide rods 6 for pushing the slide bar 312 are fixed to both the front and rear sides of the fixing block 5. When the slider 2 moves to one end of the machine tool guide rail 1, the slide bar 312 will first contact the guide rod 6, and the two will move relative to each other, allowing the slide bar 312 to slide relative to the guide rod 6 along the horizontal slide groove 313, achieving the effect of pushing the inclined slide block 310 upwards. In this invention, the slider 2 needs to contact the guide rod 6 twice before lubrication, achieving the effect of combining the lubrication frequency with the actual operation of the CNC machine tool guide rail pair, thus solving the problem of lubricating oil waste caused by traditional periodic lubrication.

[0034] In addition, the sponge 34 provided in this utility model can also absorb excess lubricating oil, and the amount of lubricating oil squeezed out by the sponge 34 each time is limited, which can also avoid the problem of increased friction on the surface of the machine tool guide rail 1 and the slider 2 due to excessive thickness of lubricating oil film, thereby helping to ensure that the normal service life of the CNC machine tool guide rail pair is not affected.

[0035] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A numerical control machine tool automatic lubrication structure, comprising a machine tool guide rail (1) installed on a numerical control machine tool, a sliding block (2) being slidably connected on the machine tool guide rail (1), characterized in that: The slider (2) is fixed with a lubricating block (3) at one end, and the lubricating block (3) is fixed with a sealing block (4) on one side and the other end of the slider (2) to prevent lubricating oil leakage. The lubricating block (3) comprises a shell (31) and an oil outlet core (32), the oil outlet core (32) and the shell (31) are matched with the machine tool guide rail (1), the two sides of the oil outlet core (32) are provided with inclined top sliding blocks (310) sliding in the shell (31), the far sides of the two inclined top sliding blocks (310) are provided with inclined sliding grooves (311), the inclined sliding grooves (311) are inserted with sliding rods (312), the two side walls of the shell (31) are provided with horizontal sliding grooves (313) matched with the sliding rods (312), and the sliding rods (312) push the inclined top sliding blocks (310) to move upwards to extrude lubricating oil and realize lubrication.

2. The automatic lubrication structure of a numerically controlled machine tool according to claim 1, characterized in that: The inner top end of the oil outlet core (32) is communicated with the inner part of the shell (31), the inner top end of the oil outlet core (32) is provided with a hole plate (33), the top of the hole plate (33) is provided with a sponge (34) for adsorbing lubricating oil, the top of the sponge (34) is provided with a first fixed plate (35) fixed with the inner wall of the shell (31), the top of the first fixed plate (35) is provided with a second fixed plate (36) fixed with the inner wall of the shell (31), and the lubricating oil is stored on the top of the second fixed plate (36). The inner part of the second fixed plate (36) and the inner part of the first fixed plate (35) are inserted with a plugging rod (37), the bottom end of the plugging rod (37) penetrates through the sponge (34) and is fixed with the top of the hole plate (33), the top of the two plugging rods (37) on the two sides is fixed with a vertical rod (38), the top end of the vertical rod (38) penetrates through the top wall of the shell (31) and is fixedly connected with a bent rod (39), the bottom end of the bent rod (39) is fixed with the top of the inclined top sliding block (310), and when the inclined top sliding block (310) moves upwards, the bent rod (39), the vertical rod (38), the plugging rod (37) and the hole plate (33) are synchronously driven to move upwards to extrude the sponge (34).

3. The automatic lubrication structure of a numerically controlled machine tool according to claim 2, characterized in that: The plugging rod (37) is composed of a rod body (371), a lower plug (372) and an upper plug (373), the upper plug (373) is mirror-distributed with the lower plug (372), the upper plug (373) is fixed at the top end of the rod body (371), the lower plug (372) is fixed at the middle part of the rod body (371), a plurality of oil outlet holes a matched with the upper plug (373) are formed on the second fixed plate (36), and a plurality of oil outlet holes b matched with the lower plug (372) are formed on the first fixed plate (35).

4. The automatic lubrication structure of a numerically controlled machine tool according to claim 2, characterized by: The bottom end of the bent rod (39) is provided with two side-by-side arranged springs (314) on one side close to the oil outlet core (32), the bottom end of the spring (314) is fixed with the inclined top sliding block (310), and the top end of the spring (314) is fixed with the top end of the inner wall of the shell (31).

5. The automatic lubrication structure of a numerically controlled machine tool according to claim 1, characterized by: The end of the sliding rod (312) far away from the inclined top sliding block (310) is processed into a spherical shape, one end of the machine tool guide rail (1) is fixed with a fixed block (5), and the front side and the rear side of the fixed block (5) are fixed with guide rods (6) for pushing the sliding rod (312).

6. The automatic lubrication structure of a numerically controlled machine tool according to claim 1, wherein: The sliding rod (312) is fixed with a limiting protrusion (316) at the top and bottom of one end of the inclined top sliding block (310), and the side wall of the shell (31) is processed with a limiting groove matched with the side wall of the limiting protrusion (316).

7. The automatic lubrication structure of a numerically controlled machine tool according to claim 1, characterized by: The top of the side of the shell (31) away from the sliding block (2) is fixed with an oil injection pipe (315), one end of the oil injection pipe (315) extends into the inside of the shell (31), and the other end of the oil injection pipe (315) is threadedly connected with a rubber plug used for plugging the opening of the oil injection pipe (315).

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