Double-ball autorotation ball type linear guide rail

Abstract

The utility model discloses a double-ball autorotation ball type linear guide rail which comprises a guide rail body, a sliding block is arranged on the guide rail body in a sleeved mode, end covers are installed at the two ends of the sliding block, an oil separation plate is installed on one side of each end cover, a first bolt and a second bolt are in threaded connection with the oil separation plate respectively, the sliding block is in an n shape, and the first bolt and the second bolt are in threaded connection. A pair of supporting frames is installed on the inner walls of the two sides of the supporting frame, connecting plates are fixedly connected to the two ends of each supporting frame, mounting holes are formed in the connecting plates, third bolts are inserted into the mounting holes, ball grooves are formed in the supporting frames, limiting holes are formed in the groove bottoms of the two ends of each ball groove, and balls are arranged in the limiting holes. The guide rail greatly reduces the using number of the balls, is convenient to install, low in cost and low in noise, and can reduce the probability of frictional resistance damage and prolong the service life of the guide rail.

Description

Technical Field

[0001] The utility model belongs to the technical field of linear guide rails, in particular to a double-ball self-rotating ball type linear guide rail. Background Art

[0002] Linear guides can be divided into three types: roller linear guides, cylindrical linear guides, and ball linear guides. Depending on the nature of friction, linear motion guides can be divided into sliding friction guides, rolling friction guides, elastic friction guides, and fluid friction guides. The function of a linear guide is to support and guide moving parts to perform reciprocating linear motion in a given direction.

[0003] The existing ball linear guide structure is mostly composed of a row of balls rolling in a fixed track to complete the reciprocating linear movement in a given direction of the guide rail, as shown in the attached manual. Figure 1 As shown in the figure, the large number of beads used makes manual adjustment difficult, and the overall installation and operation are noisy. Furthermore, due to differences in operating conditions, increased friction can easily damage the beads and, in turn, the guide rail. Therefore, to address these issues, the dual-ball self-rotating linear guide provided by this utility model is of great significance. Utility Model Content

[0004] The utility model provides a double-ball self-rotating ball-type linear guide rail, which greatly reduces the number of balls used compared to the existing linear guide rail structure, making the adaptation of the balls easier to meet the standards and more convenient to install. It not only avoids the cost waste caused by tolerance problems of the balls, but also makes the balls quieter, smoother and less likely to generate noise when rotating at high speed; by greatly reducing the number of balls, the probability of damage caused by friction resistance is also reduced accordingly, thereby extending the life of the guide rail. In summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model discloses a double-ball self-rotating ball-type linear guide rail, comprising a guide rail, a slider sleeved on the guide rail, end covers installed at both ends of the slider, an oil separator installed on one side of the end cover, a first bolt and a second bolt threadedly connected to the oil separator respectively, the slider is N-shaped, a pair of support frames are installed on the inner walls on both sides, both ends of the support frame are fixedly connected with a connecting plate, a mounting hole is provided on the connecting plate, a third bolt is inserted into the mounting hole, a ball groove is provided on the support frame, and limiting holes are provided at the bottom of the groove at both ends of the ball groove, and balls are provided in the limiting holes.

[0007] Furthermore, a thread groove cooperating with the first bolt is formed on the surface of the end cover, and thread grooves cooperating with the second bolt and the third bolt are respectively formed on the surfaces of both ends of the slider.

[0008] Furthermore, the ball groove is arc-shaped, and its diameter is equal to the diameter of the ball.

[0009] Furthermore, the limiting hole is circular, and its hole diameter is smaller than the diameter of the ball.

[0010] Furthermore, grooves are provided on both sides of the guide rail, and protrusions are provided on the inner walls of the bottom ends of both sides of the sliding block, and the thickness of the protrusions is equal to the width of the grooves.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) Compared with the existing linear guide structure, the double-ball self-rotating ball linear guide in the present invention greatly reduces the number of balls used when in use, making it easier to meet the standards for ball adaptation and more convenient to install. It not only avoids the cost waste caused by the tolerance problem of the balls, but also makes the balls quieter, smoother and less likely to generate noise when rotating at high speed;

[0013] (2) When the double-ball self-rotating ball linear guide rail in the present invention is used, the number of balls is greatly reduced, and the probability of damage caused by friction resistance is correspondingly reduced, thereby extending the life of the guide rail.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural diagram of a linear guide rail in the prior art;

[0017] Figure 2 This is a schematic structural diagram of a double-ball self-rotating ball linear guide rail of the present invention;

[0018] Figure 3 This is a schematic structural diagram of the guide rail in the utility model;

[0019] Figure 4 It is a side view of the guide rail of the utility model;

[0020] Figure 5 This is a schematic diagram of the assembly of the slider and the support frame in the utility model;

[0021] Figure 6 This is a structural diagram of the slider in the utility model;

[0022] Figure 7 This is a side view of the slider in the utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the support frame and the ball in the utility model;

[0024] Figure 9 It is a side view of the support frame and the ball in the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1. Guide rail; 2. Slider; 3. End cover; 4. Oil separator; 5. First bolt; 6. Second bolt; 7. Support frame; 8. Connecting plate; 9. Mounting hole; 10. Third bolt; 11. Ball groove; 12. Limit hole; 13. Ball; 14. Groove; 15. Bump. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that terms such as "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] See also Figure 1-9As shown, the utility model is a double-ball self-rotating ball linear guide, including a guide rail 1, a slider 2 is sleeved on the guide rail 1, end covers 3 are installed at both ends of the slider 2, an oil separator 4 is installed on one side of the end cover 3, and a first bolt 5 and a second bolt 6 are respectively threaded on the oil separator 4, the slider 2 is N-shaped, and a pair of support frames 7 are installed on the inner walls on both sides, and both ends of the support frame 7 are fixedly connected to a connecting plate 8, a mounting hole 9 is provided on the connecting plate 8, a third bolt 10 is inserted into the mounting hole 9, a ball groove 11 is provided on the support frame 7, and limiting holes 12 are provided at the bottom of both ends of the ball groove 11, and balls 13 are arranged in the limiting holes 12. The balls 13 are made of tungsten steel, chrome steel, silicon carbide and other materials with good wear resistance, good structural rigidity, not easy to wear, and extremely low friction coefficient, low driving power, no creep at low speed, and large load-bearing capacity.

[0030] Among them, the surface of the end cover 3 is provided with a thread groove that cooperates with the first bolt 5. The oil separator 4 can be threadedly fixed to the end cover 3 through the mutual cooperation between the first bolt 5 and the thread groove. The oil separator 4 can clean and isolate the grease and debris of the guide rail 1, making it difficult for it to enter the interior of the slider 2. The two end surfaces of the slider 2 are respectively provided with thread grooves that cooperate with the second bolt 6 and the third bolt 10. The oil separator 4 and the support frame 7 can be threadedly fixed to the end cover 3 and the slider 2 respectively through the mutual cooperation between the second bolt 6 and the third bolt 10 and the thread groove. The support frame 7 can maintain the stability between the fixed contact surface between the ball 13 and the guide rail 1.

[0031] The ball groove 11 is arc-shaped, and its diameter is equal to the diameter of the ball 13. The ball 13 can contact and roll with the guide rail 1 in a self-rotating manner to reduce the friction force when the slider 2 moves.

[0032] The limiting hole 12 is circular, and its diameter is smaller than the diameter of the ball 13 . The limiting hole 12 can play a limiting role to restrict the ball 13 so that it can rotate and roll within the range of the limiting hole 12 and the ball groove 11 .

[0033] Among them, grooves 14 are provided on both sides of the guide rail 1, and protrusions 15 are provided on the inner walls of the bottom ends of both sides of the slider 2. The thickness of the protrusion 15 is equal to the width of the groove 14. When the slider 2 moves along the guide rail 1, the protrusion 15 can fit into the groove 14. The mutual cooperation between the protrusion 15 and the groove 14 can play a limiting role to prevent the slider 2 from shaking and deflecting during movement.

[0034] The standard parts used in the application documents can all be purchased from the market. All components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology.

[0035] The working principle of this utility model is:

[0036] When the utility model is in use, the slider 2 can move along the guide rail 1. A pair of support frames 7 are installed on the inner walls of both sides of the slider 2. A ball groove 11 is opened on the support frame 7. The bottom of the two ends of the ball groove 11 are provided with a limit hole 12. The limit hole 12 is provided with a ball 13. The support frame 7 can maintain the stability between the fixed contact surface between the ball 13 and the guide rail 1. When the slider 2 moves, the ball 13 can contact and roll with the guide rail 1 in a self-rotating manner to reduce the friction force when the slider 2 moves. The ball 13 is made of tungsten steel, chrome steel and other materials with good wear resistance. It has good rigidity, is not easy to wear, and has an extremely low friction coefficient, low driving power, no creeping at low speed, and large load-bearing capacity. Compared with the existing linear guide structure, this application greatly reduces the number of balls 13 used, making the adaptation of the balls 13 easier to meet the standards and more convenient to install. It not only avoids the cost waste caused by tolerance problems of the balls 13, but also makes the balls 13 quieter, smoother and less likely to generate noise when rotating at high speed. In addition, after the number of balls 13 is greatly reduced, the probability of damage caused by friction resistance is also reduced accordingly, thereby extending the life of the guide rail 1.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A double-ball self-rotating ball linear guide, characterized in that: The invention comprises a guide rail (1), wherein a slider (2) is sleeved on the guide rail (1), end covers (3) are installed at both ends of the slider (2), an oil separator (4) is installed on one side of the end cover (3), a first bolt (5) and a second bolt (6) are respectively threadedly connected to the oil separator (4), the slider (2) is in an N shape, a pair of support frames (7) are installed on the inner walls of both sides, both ends of the support frame (7) are fixedly connected to a connecting plate (8), a mounting hole (9) is provided on the connecting plate (8), a third bolt (10) is inserted into the mounting hole (9), a ball groove (11) is provided on the support frame (7), and a limiting hole (12) is provided at the bottom of the two ends of the ball groove (11), and a ball (13) is provided in the limiting hole (12).

2. The double-ball self-rotating ball linear guide rail according to claim 1, characterized in that: The surface of the end cover (3) is provided with a thread groove that matches the first bolt (5), and the surfaces of both ends of the slider (2) are provided with thread grooves that match the second bolt (6) and the third bolt (10).

3. The double-ball self-rotating ball linear guide according to claim 1, characterized in that: The ball groove (11) is arc-shaped, and its diameter is equal to the diameter of the ball (13).

4. The double-ball self-rotating ball linear guide rail according to claim 1, characterized in that: The limiting hole (12) is circular, and its diameter is smaller than the diameter of the ball (13).

5. The double-ball self-rotating ball linear guide rail according to claim 1, characterized in that: Grooves (14) are provided on both sides of the guide rail (1), and protrusions (15) are provided on the inner walls of the bottom ends of both sides of the slider (2). The thickness of the protrusions (15) is equal to the width of the grooves (14).

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