Self-lubricating structure of micro guide rail
By setting up oil storage tanks and through grooves on the slide bead guard of the micro-guiding rail, lubricating grease flows into the rolling channel and contacts the rolling ball, the problem of rapid consumption of lubricating grease in the rail is solved, and the long-term use and maintenance-free rails are achieved.
Patent Information
- Application Number
- CN202510094277.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-04-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing guides generate noise and friction and heat when the rolling ball is running, resulting in severe wear and grease being consumed quickly, resulting in excessive friction and damage to the rolling ball.
A self-lubricating structure of a micro-guiding rail is designed. By setting an oil storage tank and a connected oil injection port on the bead guard of the slider, lubricating grease is stored and injected, and the lubricating grease is flowed into the rolling channel through the arc-shaped through grooves and lubricating grease, and contacting the rolling balls to achieve self-lubricating.
It extends the use time of lubricating grease in the guide rail, reduces the number of times the guide rail is damaged, reduces noise and heat generation, and realizes long-term use and maintenance-free rails.
Smart Images
Figure CN119825818A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of guide rails, and mainly relates to a self-lubricating structure of a micro guide rail. Background Art
[0002] Guide rails are mainly used in mechanical structures with high precision requirements. Guide rails include sliders and rails. There is no intermediate medium between the slider and the rail, but a rolling ball. The slider has a rolling channel, and a rolling ball rolls in the rolling channel. The rolling ball rolls in contact with the rail, which increases the sliding performance between the slider and the rail.
[0003] However, when the rolling balls are running, the existing guide rails will produce noise due to friction, and the friction between them will generate heat, causing serious wear and tear, resulting in the need for constant maintenance.
[0004] Based on the above problems, in the prior art, lubricating grease is generally injected into the rolling channel of the rolling ball to keep the rolling ball and the slide rail in a lubricated state. However, since the lubricating grease is injected into the rolling channel, the lubricating grease will be consumed quickly, resulting in excessive friction of the rolling ball and damage. Summary of the invention
[0005] The present invention provides a self-lubricating structure for a micro guide rail to solve the problem in the prior art that lubricating grease is quickly consumed, resulting in damage to the guide rail.
[0006] To solve the above problems, the present invention adopts the following technical solutions: The self-lubricating structure of the micro guide rail comprises a slide rail and a slider slidably mounted on the slide rail, the slider has a rolling channel, the rolling channel is provided with a rolling ball that rolls in contact with the slide rail, the slider comprises a sliding body and a bead protector respectively mounted on opposite sides of the sliding body, the bead protector has an oil storage tank for storing lubricating grease and an oil filling port connected to the oil storage tank, and the bead protector is attached to the sliding body to seal the oil storage tank; The oil storage tank is connected to the rolling channel so that the lubricating grease can flow into the rolling channel and contact the rolling ball.
[0007] The invention has the following beneficial effects: by setting up the oil storage tank, more lubricating grease can be stored in the guide rail, and the lubricating grease with low viscosity can slowly drip into the rolling ball to lubricate the rolling ball. The design of the oil storage tank enables the lubricating grease in the guide rail to be used longer, thereby extending the service life of the guide rail and reducing the number of times the guide rail is damaged.
[0008] Furthermore, the bead protector is provided with two fixed sleeves arranged at intervals, and the fixed sleeves divide the oil storage tank into a main oil storage tank and sub-oil storage tanks arranged on both sides of the main oil storage tank. The main oil storage tank is arranged between the two fixed sleeves, and the two sub-oil storage tanks are located on the outsides of the corresponding fixed sleeves. The main oil storage tank is communicated with the two sub-oil storage tanks, and the oil filling port is communicated with the main oil storage tank, and the two sub-oil storage tanks are connected to the rolling channel, so that the lubricating grease injected through the oil filling port enters the main oil storage tank, the sub-oil storage tank and the rolling channel in sequence.
[0009] The invention has the following beneficial effects: by arranging a main oil storage tank and two auxiliary oil storage tanks on the bead protector, the spatial position on the bead protector can be fully utilized, thereby obtaining a larger oil storage tank, storing more lubricating grease, and extending the service life of the lubricating grease in the guide rail.
[0010] Furthermore, the bead protector is provided with an arc-shaped through groove connecting the main oil storage groove and the auxiliary oil storage groove, so that the lubricating grease in the main oil storage groove enters into the auxiliary oil storage groove through the arc-shaped through groove, and the arc-shaped through groove is arranged circumferentially around the outer side of the corresponding fixed sleeve, and the arc-shaped through groove is located at the lower end of the main oil storage groove.
[0011] Furthermore, the bead protector is provided with a lubrication through groove connecting the oil storage auxiliary groove and the rolling channel.
[0012] The invention has the following beneficial effects: the lubricating grease in the oil storage auxiliary groove flows into the rolling channel through the lubricating through groove and contacts the rolling ball, thereby increasing the lubricity of the rolling ball and reducing the probability of damage to the guide rail.
[0013] Furthermore, a rotator is provided between the sliding body and the bead protector, a first rotatable groove is provided on the rotator, a second rotatable groove is provided on a side of the bead protector close to the rotator, and the rotator fits with the bead protector so that the first rotatable groove and the second rotatable groove fit correspondingly to form a rotatable channel for the rolling ball to rotate and circulate; The rotary channel has two channel openings for the rolling ball to enter and exit, and two opposite ends of the sliding body are provided with two channel sections for the rolling of the rolling ball, and the two channel openings are respectively fitted with the two channel sections in a one-to-one correspondence to form the rolling channel for the rolling ball to circulate; The lubricating through groove enables the oil storage auxiliary groove to communicate with the rotary channel.
[0014] The invention has the following beneficial effects: the rolling channel is split, which is convenient for the replacement and maintenance of the rolling ball at a later stage, thus increasing the convenience.
[0015] Furthermore, a fitting groove is provided on one side of the second rotating groove, and a fitting protrusion inserted into the fitting groove is provided at a position of the first rotating groove corresponding to the fitting groove, and there is a spacing space between the fitting protrusion and the fitting groove, and the lubricating groove is connected to the spacing space so that the lubricating grease in the oil storage sub-groove flows into the rotating channel through the lubricating groove and the spacing space in turn.
[0016] Furthermore, a connecting groove is provided in the interlocking groove, and the connecting groove connects the lubricating groove and the spacing space, so that the lubricating grease in the oil storage auxiliary groove flows into the rotating channel through the lubricating groove, the connecting groove and the spacing space in sequence.
[0017] Furthermore, a retaining frame is provided on the sliding body, and the retaining frame is used to keep the rolling ball rolling in the rolling channel; The two bead protectors arranged opposite to each other are provided with snap-in grooves, and the two ends of the retaining frame are respectively embedded in the snap-in grooves of the two bead protectors arranged opposite to each other. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 An exploded view of the present invention; Figure 3 This is a schematic diagram of the structure of the bead protector from the first perspective; Figure 4 This is a schematic diagram of the structure of the bead protector from the second perspective; Figure 5 is a schematic diagram of the structure of the gyrator; Figure 6 It is a schematic diagram of the structure after the bead protector and the rotator are attached; Figure 7 for Figure 6 A top view of Figure 8 for Figure 7 Sectional view along AA direction; Fig. 9 for Figure 8 The enlarged view of point B in the middle; Fig.10 A top view of the present invention; Fig.11 for Fig.10 Sectional view along CC direction.
[0019] Description of reference numerals: 1. Slide rail; 2. Slider; 3. Bead protector; 4. Rotator; 5. Cage; 6. Oil filling port; 7. Main oil storage groove; 8. Auxiliary oil storage groove; 9. Fixed sleeve; 10. Arc groove; 11. Lubrication groove; 12. Second rotary groove; 13. Fitting groove; 14. Connecting groove; 15. First rotary groove; 16. Fitting protrusion; 17. Channel opening; 18. Sliding body; 19. Rotating channel; 20. Spacing space; 21. Channel section; 22. Snap-in groove. DETAILED DESCRIPTION
[0020] 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. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.
[0021] Various non-limiting embodiments of the present invention are described in detail below. Any number of elements in the accompanying drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.
[0022] like Figure 1 , Figure 2 As shown, the self-lubricating structure of the micro guide rail includes a slide rail 1 and a slider 2 slidably assembled on the slide rail 1, wherein the slider 2 has a rolling channel, and a rolling ball is arranged in the rolling channel. The rolling ball rolls and contacts the slide rail 1 to make the slider 2 move more easily.
[0023] like Figure 3-Figure 5 As shown, the slider 2 includes a sliding body 18 and bead guards 3 respectively fixedly mounted on opposite sides of the sliding body 18. The bead guard 3 has an oil storage tank for storing lubricating grease and an oil injection port 6 connected to the oil storage tank, and lubricating grease can be injected into the oil storage tank through the oil injection port 6. The bead guard 3 fits the sliding body 18 to seal the oil storage tank and prevent the lubricating grease from leaking from the oil storage tank.
[0024] The oil storage tank is connected to the rolling channel, so that the lubricating grease in the oil storage tank can flow into the rolling channel and contact the rolling ball. The lubricating grease will be applied to the surface of the rolling ball as the rolling ball rotates, so that there is always an oil film on the surface of the rolling ball for lubrication, so that there is no mutual friction between any two adjacent rolling balls, which improves the lubricity, thereby realizing the long-term use of the guide rail and the long-term maintenance-free of the guide rail, and effectively reducing noise and heat generation.
[0025] By setting up an oil storage tank, more lubricating grease can be stored in the guide rail, and the low-viscosity lubricating grease can slowly drip onto the surface of the rolling ball to lubricate the rolling ball. The design of the oil storage tank allows the lubricating grease in the guide rail to be used longer, thereby extending the service life of the guide rail and reducing the number of times the guide rail is damaged.
[0026] In this embodiment, Figure 2-Figure 5 As shown, the oil storage tank includes a main oil storage tank 7 and auxiliary oil storage tanks 8 disposed on both sides of the main oil storage tank 7. The main oil storage tank 7 and the auxiliary oil storage tank 8 are both located on the bead protector 3. The bead protector 3 fits the sliding body 18 so that the main oil storage tank 7 and the auxiliary oil storage tank 8 are sealed to prevent the lubricating grease from leaking from the main oil storage tank 7 and the auxiliary oil storage tank 8. The main oil storage tank 7 is connected to the two auxiliary oil storage tanks 8, and the oil injection port 6 is connected to the main oil storage tank 7. The two auxiliary oil storage tanks 8 are connected to the rolling channel so that the lubricating grease injected through the oil injection port 6 enters the main oil storage tank 7, the auxiliary oil storage tank 8 and the rolling channel in turn, and then the lubricating grease contacts the rolling ball. By arranging the main oil storage tank 7 and the two auxiliary oil storage tanks 8 on the bead protector 3, the space position on the bead protector 3 can be fully utilized, thereby obtaining a larger oil storage tank, storing more lubricating grease, and extending the use time of the lubricating grease in the guide rail.
[0027] The bead protector 3 is provided with two fixed sleeves 9 arranged at intervals, and screws are inserted into the two fixed sleeves 9 to fix the bead protector 3 on the sliding body 18. The main oil storage groove 7 is arranged between the two fixed sleeves 9, and the two oil storage sub-grooves 8 are located on the corresponding outer sides of the fixed sleeves 9. The bead protector 3 is provided with an arc-shaped through groove 10 connecting the main oil storage groove 7 and the oil storage sub-groove 8. When the bead protector 3 is in contact with the sliding body 18, a first channel for lubricating grease to flow from the main oil storage groove 7 to the sub-oil storage groove 8 is formed between the arc-shaped through groove 10 and the sliding body 18, so that the lubricating grease in the main oil storage groove 7 enters the sub-oil storage groove 8 through the arc-shaped through groove 10. The arc-shaped through groove 10 is arranged circumferentially around the outer side of the corresponding fixed sleeve 9, and the arc-shaped through groove 10 is located at the lower end of the main oil storage groove 7, so that the lubricating grease in the main oil storage groove 7 can flow out more easily.
[0028] The bead guard 3 is provided with a lubricating groove 11 connecting the oil storage auxiliary groove 8 and the rolling channel. When the bead guard 3 is fitted with the sliding body 18, a second channel for lubricating grease to flow from the oil storage auxiliary groove 8 to the rolling channel is formed between the lubricating groove 11 and the sliding body 18. The lubricating grease in the oil storage auxiliary groove 8 flows into the rolling channel through the lubricating groove 11 and contacts the rolling ball, which increases the lubricity of the rolling ball and reduces the probability of damage to the guide rail.
[0029] like Figure 3-Figure 9As shown, a gyrator 4 is provided between the sliding body 18 and the bead guard 3, and the screw passes through the bead guard 3 and the gyrator 4 in sequence and is threadedly connected to the sliding body 18. The bead guard 3 fits the gyrator 4 so that the main oil storage groove 7 and the auxiliary oil storage groove 8 are sealed, and the arc-shaped through groove 10 and the gyrator 4 form a first channel for lubricating grease to flow from the main oil storage groove 7 to the auxiliary oil storage groove 8, and the lubricating through groove 11 and the gyrator 4 form a second channel for lubricating grease to flow from the auxiliary oil storage groove 8 to the rolling channel.
[0030] The rotator 4 is provided with a first rotatable groove 15, and the bead guard 3 is provided with a second rotatable groove 12 on the side close to the rotator 4. The rotator 4 is fitted with the bead guard 3 so that the first rotatable groove 15 and the second rotatable groove 12 are correspondingly fitted to form a rotatable channel 19 for the rolling ball to circulate. The rotatable channel 19 has two channel openings 17 for the rolling ball to enter and exit, and two channel sections 21 for the rolling ball to roll are provided at opposite ends of the sliding body 18, that is, a total of four channel sections 21. The extension direction of each channel section 21 is consistent with the extension direction of the slide rail 1. Each side of the slide rail 1 has two channel sections 21, and one of the two channel sections 21 on each side has an opening facing the slide rail 1. When the rolling ball rolls into the channel section 21, it can roll and contact with the slide rail 1. The two channel openings 17 are respectively fitted with the two channel sections 21 one by one to form a rolling channel for the rolling ball to circulate. The lubrication groove 11 connects the oil storage auxiliary groove 8 with the rotatable channel 19. The rolling channel is split, which is convenient for the later replacement and maintenance of the rolling balls and guide rails, increasing convenience.
[0031] A fitting groove 13 is provided on one side of the second rotating groove 12, and a fitting protrusion 16 inserted into the fitting groove 13 is provided at a position of the first rotating groove 15 corresponding to the fitting groove 13, and a spacing space 20 is provided between the fitting protrusion 16 and the fitting groove 13, and the lubricating groove 11 is connected to the spacing space 20, so that the lubricating grease in the oil storage sub-groove 8 flows into the rotating channel 19 through the lubricating groove 11 and the spacing space 20 in turn.
[0032] A connecting groove 14 is provided in the interlocking groove 13. When the interlocking protrusion 16 is inserted into the interlocking groove 13, a third channel is formed between the interlocking protrusion 16 and the connecting groove 14. The third channel connects the lubricating groove 11 with the spacing space 20, so that the lubricating grease in the oil storage sub-groove 8 flows into the rotating channel 19 through the lubricating groove 11, the third channel and the spacing space 20 in sequence.
[0033] like Fig.10 , Fig.11 As shown, a retainer 5 is provided on the sliding body 18, and the retainer 5 is used to keep the rolling ball rolling in the rolling channel. Two oppositely arranged bead guards 3 are provided with a snap-in groove 22, and the two ends of the retainer 5 are respectively embedded in the snap-in grooves 22 of the two oppositely arranged bead guards 3 to fix the retainer 5.
[0034] Working process of the present invention: The lubricating grease can be injected into the main oil storage groove 7 through the oil filling port 6. When the rolling ball rolls in the rolling channel, the lubricating grease enters the main oil storage groove 7, the auxiliary oil storage groove 8 and the rolling channel in sequence, and then the lubricating grease contacts the rolling ball. The lubricating grease will be applied to the surface of the rolling ball as the rolling ball rotates, so that there is always an oil film on the surface of the rolling ball for lubrication, so that there is no mutual friction between any two adjacent rolling balls, the lubricity is improved, so that the guide rail can be used for a long time and the guide rail is maintenance-free for a long time, and the noise and heat generation are effectively reduced.
[0035] By setting up an oil storage tank, more lubricating grease can be stored in the guide rail, and the low-viscosity lubricating grease can slowly drip onto the surface of the rolling ball to lubricate the rolling ball. The design of the oil storage tank allows the lubricating grease in the guide rail to be used longer, thereby extending the service life of the guide rail and reducing the number of times the guide rail is damaged.
Claims
1. A self-lubricating structure of a micro guide rail, comprising a slide rail and a slider slidably mounted on the slide rail, wherein the slider has a rolling channel, and a rolling ball in rolling contact with the slide rail is arranged in the rolling channel, characterized in that: The slider includes a sliding body and bead protectors respectively mounted on opposite sides of the sliding body, the bead protectors having an oil storage tank for storing lubricating grease and an oil filling port connected to the oil storage tank, and the bead protectors are attached to the sliding body to seal the oil storage tank; The oil storage tank is connected to the rolling channel so that the lubricating grease can flow into the rolling channel and contact the rolling ball.
2. The self-lubricating structure of the micro guide rail according to claim 1, characterized in that: The bead protector is provided with two fixed sleeves arranged at intervals, which separate the oil storage tank into a main oil storage tank and auxiliary oil storage tanks arranged on both sides of the main oil storage tank. The main oil storage tank is arranged between the two fixed sleeves, and the two auxiliary oil storage tanks are located on the outsides of the corresponding fixed sleeves. The main oil storage tank is communicated with the two auxiliary oil storage tanks, the oil filling port is communicated with the main oil storage tank, and the two auxiliary oil storage tanks are connected with the rolling channel, so that the lubricating grease injected through the oil filling port enters the main oil storage tank, the auxiliary oil storage tank and the rolling channel in turn.
3. The self-lubricating structure of the micro guide rail according to claim 2, characterized in that: The bead protector is provided with an arc-shaped through groove connecting the main oil storage groove and the auxiliary oil storage groove, so that the lubricating grease in the main oil storage groove enters the auxiliary oil storage groove through the arc-shaped through groove. The arc-shaped through groove is arranged circumferentially around the outer side of the corresponding fixed sleeve, and the arc-shaped through groove is located at the lower end of the main oil storage groove.
4. The self-lubricating structure of the micro guide rail according to claim 3, characterized in that: The bead protector is provided with a lubrication through groove which connects the oil storage auxiliary groove and the rolling channel.
5. The self-lubricating structure of the micro guide rail according to claim 4, characterized in that: A rotator is provided between the sliding body and the bead protector, the rotator is provided with a first rotatable groove, and a second rotatable groove is provided on a side of the bead protector close to the rotator. The rotator fits with the bead protector so that the first rotatable groove and the second rotatable groove fit correspondingly to form a rotatable channel for the rolling ball to circulate. The rotary channel has two channel openings for the rolling ball to enter and exit, and two opposite ends of the sliding body are provided with two channel sections for the rolling of the rolling ball, and the two channel openings are respectively fitted with the two channel sections in a one-to-one correspondence to form the rolling channel for the rolling ball to circulate; The lubricating through groove enables the oil storage auxiliary groove to communicate with the rotary channel.
6. The self-lubricating structure of the micro guide rail according to claim 5, characterized in that: A fitting groove is provided on one side of the second rotating groove, and a fitting protrusion inserted into the fitting groove is provided at a position of the first rotating groove corresponding to the fitting groove, and a spacing space is provided between the fitting protrusion and the fitting groove, and the lubricating groove is connected to the spacing space so that the lubricating grease in the oil storage sub-groove flows into the rotating channel through the lubricating groove and the spacing space in turn.
7. The self-lubricating structure of the micro guide rail according to claim 6, characterized in that: A connecting groove is provided in the engaging groove, and the connecting groove connects the lubricating groove and the spacing space, so that the lubricating grease in the oil storage auxiliary groove flows into the rotary channel through the lubricating groove, the connecting groove and the spacing space in sequence.
8. The self-lubricating structure of the micro guide rail according to any one of claims 1 to 7, characterized in that: The sliding body is provided with a retaining frame, which is used to keep the rolling ball rolling in the rolling channel; The two bead protectors arranged opposite to each other are provided with snap-in grooves, and the two ends of the retaining frame are respectively embedded in the snap-in grooves of the two bead protectors arranged opposite to each other.