Linear guide rail capable of adjusting pre-pressure

Abstract

The utility model discloses a linear guide rail capable of adjusting precompression, which comprises a guide rail and a clamping sleeve, a moving component is mounted on the inner side of the clamping sleeve, the moving component comprises a ball seat and a ball, and further, an extrusion component is mounted on the inner side of the clamping sleeve and comprises a movable plate and a wedge plate. The linear guide rail capable of adjusting the pre-pressure comprises a movable plate, the movable plate is provided with a pre-pressure adjusting mechanism, the pre-pressure adjusting mechanism comprises a lead screw, the two ends of a clamping sleeve are provided with protection assemblies, and each protection assembly comprises a clamping opening and a rubber plate. The linear guide rail capable of adjusting the pre-pressure can be clamped on the lead screw through a clamping groove, and the lead screw is prevented from rotating when being vibrated; a gap between the ball and the guide rail caused by looseness of the screw rod is prevented, the working stability of the linear guide rail is guaranteed, the accuracy of pre-pressure adjustment is improved, whether the pre-pressure is balanced or not is known through the display screen, the phenomenon that the resistance of the linear guide rail during movement is increased due to the fact that the ball cannot roll smoothly is prevented, and the device is suitable for pre-pressure adjustment of the linear guide rail.

Description

Technical Field

[0001] The utility model relates to the technical field of linear guide equipment with adjustable pre-pressure, in particular to a linear guide with adjustable pre-pressure. Background Technique

[0002] In order to improve the rigidity of the linear guide and eliminate the gap between the guides, it is often necessary to adjust the pre-pressure on the linear guide. The utility model patent with the patent application number CN202222044901.3 discloses a linear guide with adjustable pre-pressure. By adjusting the locking screws of the expansion sleeve mechanism at both ends of the locking slider, the two expansion sleeve mechanisms move inward synchronously, so that the wedge blocks in the expansion sleeve mechanism contact and squeeze the wedge grooves of the bead seats in the bead track mechanism, causing the bead track mechanisms on both the left and right sides of the linear guide to move synchronously towards the linear guide direction, eliminating the gap between the linear guide and the slider caused by wear of the balls and bead tracks, and enabling the linear guide to maintain the set pre-pressure, precision and rigidity. The utility model can make the linear guide maintain the pre-pressure and good rigidity set at the factory for a long time through multiple adjustments of the expansion sleeve mechanism, and can maximize the service life of the linear guide. According to the disclosed technical solution, when the existing linear guide with adjustable pre-pressure is in use, on the one hand, after the pre-pressure adjustment work is completed, the adjustment screw rod is prone to rotate due to vibration during work, resulting in a change in the pre-pressure, which is not conducive to ensuring the stability of the linear guide work. On the other hand, when adjusting the pre-pressure, it is often only possible to roughly adjust the work, which is not conducive to ensuring the accuracy of the pre-pressure adjustment, and at the same time, it is easy to have inconsistent pre-pressures on both sides, which is not conducive to ensuring the smooth rotation of the balls in the guide, thereby increasing the moving resistance of the linear guide.

[0003] Therefore, how to design a linear guide with adjustable pre-pressure has become the problem we need to solve currently. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a linear guide with adjustable pre-pressure to solve the problems raised in the above background technology. The utility model is reasonably designed and is more convenient to use, and is suitable for the pre-pressure adjustment of the linear guide.

[0005] To achieve the above object, the present utility model provides the following technical solution: A linear guide rail with adjustable pre-pressure, comprising a guide rail and a ferrule. A moving component is installed inside the ferrule. The moving component includes a ball seat and balls. Further, an extrusion component is installed inside the ferrule. The extrusion component includes a movable plate and a wedge plate. A pre-pressure adjusting mechanism is installed on the movable plate. The pre-pressure adjusting mechanism includes a lead screw. Protective components are installed at both ends of the ferrule. The protective components include a bayonet and a rubber plate. A locking component is installed on the rubber plate. The locking component includes a clamping plate and a card slot.

[0006] Further, the ferrule is sleeved outside the guide rail. The ball seats are respectively clamped on both sides of the guide rail. A ball channel is opened inside the ball seat. The balls are installed inside the ball channel. One side of the ball passes through the ball channel and extends to the outside of the ball seat. One side of the ball is clamped on the outer side of the guide rail.

[0007] Further, the movable plates are respectively installed inside both sides of the ferrule. The wedge plate is integrally formed on the movable plate. Inclined surfaces are opened at both ends of the ball seat. One side of the wedge plate is clamped on the inclined surface. The other side of the wedge plate is clamped on the inner wall of the ferrule.

[0008] Further, a pressure sensor is installed inside the inclined surface through a bolt. The pressure sensor is clamped on one side of the wedge plate. A display screen is installed on the outer side of the ferrule through a bolt. The display screen is connected to the pressure sensor through an electric wire.

[0009] Further, the lead screw is respectively installed at both ends of the ferrule through bearings. One end of the lead screw is installed outside the ferrule. The other end of the lead screw is installed inside the movable plate.

[0010] Further, external threads are opened on the outer side of the lead screw. Internal threads are opened inside the movable plate. The external threads are matched with the internal threads.

[0011] Further, the bayonets are integrally formed inside both ends of the ferrule. The clamping plates are integrally formed on the outer side of the rubber plate. The clamping plates are clamped inside the bayonets. The outer side of the rubber plate is clamped on the inner wall of the ferrule. The rubber plate is sleeved outside the guide rail.

[0012] Further, the card slots are opened inside the rubber plate. Internal tooth threads are opened on the inner wall of the card slots. External tooth threads are opened on the outer side of one end of the lead screw. The internal tooth threads are sleeved outside the external tooth threads.

[0013] Beneficial effects: 1. When the linear guide rail with adjustable pre-pressure is in use, after the adjustment of the pre-pressure is completed, the clamping plate on the rubber plate is clamped inside the clamping openings at both ends of the clamping sleeve, and the rubber plate is sleeved on the outer side of the guide rail. The rubber plate is used to prevent foreign impurities from entering the inside of the clamping sleeve, ensuring the working safety of the linear guide rail. At the same time, the internal tooth pattern in the card slot is tightly clamped on the outer side of the external tooth pattern on the lead screw, preventing the lead screw from rotating when subjected to vibration, thereby ensuring the stability of the adjusted pre-pressure and preventing the generation of gaps between the balls and the guide rail due to the loosening of the lead screw, ensuring the working stability of the linear guide rail.

[0014] 2. When the linear guide rail with adjustable pre-pressure is in use, first pry the rubber plate from the inside of both ends of the clamping sleeve, and rotate the lead screw with the aid of tools. The lead screw pushes the movable plate through the thread, and the movable plate drives the wedge plate to move. Then, the inclination of the wedge plate is used to squeeze the inclined surface of the ball seat, thereby adjusting the pre-pressure of the ball seat on the guide rail. The extrusion pressure generated by the wedge plate on the pressure sensor is displayed through the display screen, and the value of the adjusted pre-pressure can be intuitively known, improving the accuracy of the pre-pressure adjustment. At the same time, it can be known through the display screen whether the pre-pressures at both ends of the ball seat are balanced, avoiding the situation of one end being large and the other end being small, so as to ensure that the balls can roll smoothly inside the ball seat and prevent the resistance of the linear guide rail from increasing due to the inability of the balls to roll smoothly.

[0015] 3. The linear guide rail with adjustable pre-pressure is reasonably designed, efficient and convenient to use, and is suitable for the pre-pressure adjustment of linear guide rails. Description of the drawings

[0016] Figure 1 It is a schematic structural diagram of a linear guide rail with adjustable pre-pressure of the present utility model;

[0017] Figure 2 It is a cross-sectional view of a linear guide rail with adjustable pre-pressure of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the rubber plate of a linear guide rail with adjustable pre-pressure of the present utility model;

[0019] In the figure: 1. Guide rail; 2. Clamping sleeve; 3. Ball seat; 4. Movable plate; 5. Wedge plate; 6. Lead screw; 7. Pressure sensor; 8. Display screen; 9. Clamping opening; 10. Rubber plate; 11. Clamping plate; 12. Card slot. Detailed implementation manners

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0021] Please refer to Figures 1 to 3 , the present invention provides a technical solution: a linear guide rail with adjustable pre-pressure, including a guide rail 1 and a bushing 2. A moving component is installed inside the bushing 2. The moving component includes a ball seat 3 and balls. An extrusion component is installed inside the bushing 2. The extrusion component includes a movable plate 4 and a wedge plate 5. A pre-pressure adjusting mechanism is installed on the movable plate 4. The pre-pressure adjusting mechanism includes a lead screw 6. Protective components are installed at both ends of the bushing 2. The protective components include a bayonet 9 and a rubber plate 10. A locking component is installed on the rubber plate 10. The locking component includes a clamping plate 11 and a card slot 12. The bayonet 9 is integrally formed on the inner sides of both ends of the bushing 2. The clamping plate 11 is integrally formed on the outer side of the rubber plate 10. The clamping plate 11 is stuck inside the bayonet 9. The outer side of the rubber plate 10 is stuck on the inner wall of the bushing 2. The rubber plate 10 is sleeved on the outer side of the guide rail 1. The card slot 12 is opened on the inner side of the rubber plate 10. Internal tooth threads are opened on the inner wall of the card slot 12. External tooth threads are opened on the outer side of one end of the lead screw 6. The internal tooth threads are sleeved on the outer side of the external tooth threads. After completing the adjustment of the pre-pressure, the clamping plate 11 on the rubber plate 10 is stuck inside the bayonets 9 at both ends of the bushing 2, and the rubber plate 10 is sleeved on the outer side of the guide rail 1. The rubber plate 10 is used to prevent external impurities from entering the inside of the bushing 2, ensuring the working safety of the linear guide rail. At the same time, the internal tooth threads in the card slot 12 are tightly stuck on the outer side of the external tooth threads on the lead screw 6, preventing the lead screw 6 from rotating when vibrating, thereby ensuring the stability of the adjusted pre-pressure, preventing the lead screw 6 from loosening and causing a gap between the balls and the guide rail 1, and ensuring the working stability of the linear guide rail.

[0022] In this embodiment, the ferrule 2 is sleeved outside the guide rail 1, the ball seats 3 are respectively clamped on both sides of the guide rail 1, a ball channel is formed inside the ball seats 3, the balls are installed inside the ball channel, one side of the balls passes through the ball channel and extends outside the ball seats 3, one side of the balls is clamped on the outer side of the guide rail 1, the movable plates 4 are respectively installed inside both sides of the ferrule 2, the wedge plates 5 are integrally formed on the movable plates 4, inclined surfaces are formed at both ends of the ball seats 3, one side of the wedge plates 5 is clamped on the inclined surfaces, the other side of the wedge plates 5 is clamped on the inner wall of the ferrule 2, a pressure sensor 7 is installed inside the inclined surface through a bolt, the pressure sensor 7 is clamped on one side of the wedge plate 5, a display screen 8 is installed on the outer side of the ferrule 2 through a bolt, the display screen 8 is connected to the pressure sensor 7 through a wire, the lead screw 6 is respectively installed at both ends of the ferrule 2 through bearings, one end of the lead screw 6 is installed outside the ferrule 2, the other end of the lead screw 6 is installed inside the movable plate 4, external threads are formed on the outer side of the lead screw 6, internal threads are formed inside the movable plate 4, the external threads are matched with the internal threads. During use, first pry the rubber plate 10 from the inside of both ends of the ferrule 2, and turn the lead screw 6 with a tool. The lead screw 6 pushes the movable plate 4 through the threads, the movable plate 4 drives the wedge plate 5 to move, and then the inclination of the wedge plate 5 is used to squeeze the inclined surface of the ball seat 3, so as to adjust the pre-pressure of the ball seat 3 on the guide rail 1. The extrusion pressure generated by the wedge plate 5 on the pressure sensor 7 is displayed through the display screen 8, and the value of the adjusted pre-pressure can be intuitively known, improving the accuracy of pre-pressure adjustment. At the same time, it can be known through the display screen 8 whether the pre-pressures at both ends of the ball seat 3 are balanced, avoiding the situation of one end being large and the other end being small, so as to ensure that the balls can roll smoothly inside the ball seats 3 and prevent the resistance of the linear guide rail from increasing due to the inability of the balls to roll smoothly.

[0023] When the linear guide rail with adjustable pre-pressure is in use, first pry the rubber plate 10 from the inner sides of both ends of the ferrule 2, and rotate the lead screw 6 with the aid of a tool. The lead screw 6 pushes the movable plate 4 through the thread, and the movable plate 4 drives the wedge plate 5 to move. Then, the inclination of the wedge plate 5 is used to squeeze the inclined surface of the ball seat 3, so as to adjust the pre-pressure of the ball seat 3 on the guide rail 1. The extrusion pressure generated by the wedge plate 5 on the pressure sensor 7 is displayed through the display screen 8, and the value of the adjusted pre-pressure can be intuitively known, improving the accuracy of pre-pressure adjustment. At the same time, it can be known through the display screen 8 whether the pre-pressures at both ends of the ball seat 3 are balanced, avoiding the situation of one end being large and the other end being small, so as to ensure that the balls can roll smoothly inside the ball seat 3, preventing the resistance during the movement of the linear guide rail from increasing due to the inability of the balls to roll smoothly. After the adjustment of the pre-pressure is completed, the clamping plate 11 on the rubber plate 10 is clamped inside the bayonet 9 at both ends of the ferrule 2, and the rubber plate 10 is sleeved on the outer side of the guide rail 1. The rubber plate 10 is used to prevent foreign impurities from entering the inside of the ferrule 2, ensuring the working safety of the linear guide rail. At the same time, the internal tooth pattern in the card slot 12 is tightly clamped on the outer side of the external tooth pattern on the lead screw 6, preventing the lead screw 6 from rotating when being vibrated, thereby ensuring the stability of the adjusted pre-pressure and preventing the generation of a gap between the balls and the guide rail 1 due to the loosening of the lead screw 6, ensuring the working stability of the linear guide rail.

[0024] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A linear guide rail with adjustable pre-pressure, comprising a guide rail (1) and a ferrule (2). A moving component is installed inside the ferrule (2), and the moving component includes a ball seat (3) and balls. It is characterized in that: An extrusion assembly is installed inside the ferrule (2). The extrusion assembly includes a movable plate (4) and a wedge plate (5). A pre-pressure adjusting mechanism is installed on the movable plate (4). The pre-pressure adjusting mechanism includes a lead screw (6). Protective assemblies are installed at both ends of the ferrule (2). The protective assemblies include a bayonet (9) and a rubber plate (10). A locking assembly is installed on the rubber plate (10). The locking assembly includes a clamping plate (11) and a card slot (12).

2. The linear guide rail with adjustable pre-pressure according to claim 1, wherein: The ferrule (2) is sleeved outside the guide rail (1). The ball seats (3) are respectively clamped on both sides of the guide rail (1). A ball channel is opened inside the ball seat (3). The balls are installed inside the ball channel. One side of the balls passes through the ball channel and extends outside the ball seat (3). One side of the balls is clamped on the outer side of the guide rail (1).

3. The linear guide rail with adjustable pre-pressure according to claim 2, characterized in that: The movable plates (4) are respectively installed inside both sides of the ferrule (2). The wedge plates (5) are integrally formed on the movable plates (4). Inclined surfaces are opened at both ends of the ball seat (3). One side of the wedge plate (5) is clamped on the inclined surface. The other side of the wedge plate (5) is clamped on the inner wall of the ferrule (2).

4. The linear guide rail with adjustable pre-pressure according to claim 3, wherein: A pressure sensor (7) is installed inside the inclined surface through a bolt. The pressure sensor (7) is clamped on one side of the wedge plate (5). A display screen (8) is installed on the outer side of the ferrule (2) through a bolt. The display screen (8) is connected to the pressure sensor (7) through an electric wire.

5. The linear guide rail with adjustable pre-pressure according to claim 1, wherein: The lead screw (6) is respectively installed at both ends of the ferrule (2) through bearings. One end of the lead screw (6) is installed outside the ferrule (2). The other end of the lead screw (6) is installed inside the movable plate (4).

6. The linear guide rail with adjustable pre-pressure according to claim 5, wherein: External threads are opened on the outer side of the lead screw (6). Internal threads are opened inside the movable plate (4). The external threads are matched with the internal threads.

7. The linear guide rail with adjustable pre-pressure according to claim 6, characterized in that: The bayonets (9) are integrally formed inside both ends of the ferrule (2). The clamping plates (11) are integrally formed on the outer side of the rubber plate (10). The clamping plates (11) are clamped inside the bayonets (9). The outer side of the rubber plate (10) is clamped on the inner wall of the ferrule (2). The rubber plate (10) is sleeved outside the guide rail (1).

8. The linear guide rail with adjustable pre-pressure according to claim 7, characterized in that: The card slots (12) are opened inside the rubber plate (10). Internal tooth patterns are opened on the inner wall of the card slots (12). External tooth patterns are opened on the outer side of one end of the lead screw (6). The internal tooth patterns are sleeved outside the external tooth patterns.

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