Lengthened linear bearing

Abstract

The utility model discloses a lengthened linear bearing, and relates to the technical field of bearings, the lengthened linear bearing comprises a guide rail for the linear bearing, the linear bearing comprises a shell, a retainer and a ball, a flange is arranged at the bottom end of the shell, the interior of the shell is hollow, the retainer is installed on the inner wall of the hollow, and the ball is clamped in the retainer. The linear bearing has the advantages that the rolling connection of the balls is smooth, the frictional resistance is reduced, the operation efficiency is improved, the service life is prolonged due to the fact that the retainer is made of wear-resistant plastic, the number of the balls can be correspondingly set according to the length of the linear bearing, and the service life of the linear bearing is prolonged. The linear bearing is simple in structure, good performance under different length requirements is guaranteed, maintenance is convenient, the linear bearing can stably and efficiently work in various industrial applications through the design, and reliable supporting and guiding are provided for operation of mechanical equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an extended linear bearing. Background Art

[0002] Linear bearings, also known as linear motion bearings or linear guide bearings, are a type of linear motion system produced at low cost. They are used in conjunction with guide rails for unlimited travel. Since the bearing balls are in point contact with the guide rails, the load is small and the balls rotate with very little friction resistance, thus achieving high-precision and smooth motion.

[0003] Linear bearings are widely used in electronic equipment, precision equipment such as tensile testing machines and digital three-dimensional coordinate measuring equipment, as well as sliding parts of industrial machinery such as multi-axis machine tools, punching machines, tool grinders, automatic cutting machines, printers, card sorting machines, food packaging machines, etc.

[0004] Existing linear bearings such as Figure 1 As shown, Figure 1 It is a representative drawing of the Chinese patent with publication number "CN2898420A", Figure 1 In the prior art, the linear bearing comprises a plastic housing 7, a cage 8, a ball 1, a ball 2, a ball pad 4, and a dust cover 9. The load of the bearing is increased by changing the contact mode between the ball and the working surface from point contact to surface contact. However, this improvement method can only increase the load in the radial force direction of the bearing. When the load in the axial force direction of the bearing is high, the cage will still be damaged due to insufficient load.

[0005] In response to the above problems, some people have proposed to increase the bearing load by extending the ball groove. However, since the cage where the ball groove is located is made of plastic, when the load force increases, the load at the center point of the cage will be greatly increased, which will cause the cage to deform, thereby causing the ball to fall out of the ball groove in the cage, affecting the bearing operation. For this reason, we propose an extended linear bearing. Utility Model Content

[0006] The utility model aims to provide an extended linear bearing.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: the extended linear bearing includes a guide rail for the linear bearing, the linear bearing includes a shell, a retaining frame and a ball, the bottom end of the shell is provided with a flange, and the interior is hollowed out, the retaining frame is installed on the hollow inner wall, the ball is clamped inside the retaining frame, the retaining frame is in a changed shape, and the balls are equidistantly installed inside it.

[0008] As a further solution of the utility model: the guide rail includes a limit seat and a guide rod, the limit seat is provided in two groups, and the surface of the guide rod is set to be smooth, and the two groups of the limit seats are arranged at both ends of the guide rod.

[0009] As a further solution of the utility model: the flange and the shell are an integrally formed structure, and a mounting hole is provided on the surface of the flange.

[0010] As a further solution of the utility model: the guide rod passes through the interior of the housing and is rollingly connected with the ball.

[0011] As a further solution of the utility model: the limit seat is fixedly connected to the external structure by bolts.

[0012] As a further solution of the utility model: the material of the retaining frame is wear-resistant plastic.

[0013] As a further solution of the utility model: the number of the balls is set accordingly according to the length of the linear bearing.

[0014] By adopting the above technical solution, compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model adopts an integrally formed flange and shell structure, which not only enhances the overall strength and stability, but also facilitates installation and fixation. The guide rod has a smooth surface and is smoothly connected to the ball rolling, which reduces friction resistance and improves operating efficiency. The cage is made of wear-resistant plastic, which prolongs the service life. At the same time, the number of balls can be set according to the length of the linear bearing, ensuring good performance under different length requirements. In addition, the limit seat is fixedly connected to the external structure by bolts, which is convenient for installation and disassembly, and is easy to maintain and maintain. This design enables the linear bearing to work stably and efficiently in various industrial applications, providing reliable support and guidance for the operation of mechanical equipment;

[0016] 2. The utility model makes the linear bearing more stable during operation and reduces vibration and noise through its unique structural design. The one-piece structure of the flange and the shell improves the connection strength and sealing performance, prevents dust and impurities from entering, and protects the internal structure. The rolling connection between the guide rod and the ball greatly reduces friction and improves energy transfer efficiency. The retaining frame made of wear-resistant plastic not only has good wear resistance, but also can ensure the uniform distribution and stable operation of the balls. The setting of the limit seat provides stable support and limit for the linear bearing to ensure that it does not deviate during operation. At the same time, the flexible setting of the number of balls meets the needs of linear bearings of different lengths, making it more adaptable. These beneficial effects make the linear bearing perform well in industrial production and provide a strong guarantee for improving production efficiency and product quality.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a linear bearing and a guide rail in an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the back of the linear bearing in the embodiment of the utility model;

[0020] Figure 3 This is a front view of a linear bearing in an embodiment of the utility model;

[0021] Figure 4 It is a three-dimensional cross-sectional schematic diagram of a linear bearing in an embodiment of the utility model.

[0022] In the figure: 1, linear bearing; 2, housing; 21, flange; 3, retaining frame; 4, ball; 5, guide rail; 51, limit seat; 52, guide rod. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation modes is used to help understand the present invention, but does not constitute a limitation to the present invention.

[0024] In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as there is no conflict between them.

[0025] The utility model discloses an extended linear bearing, comprising a guide rail 5 for a linear bearing 1, wherein the linear bearing 1 comprises a housing 2, a retaining frame 3 and balls 4, wherein a flange 21 is arranged at the bottom end of the housing 2, and the interior is hollowed out, the retaining frame 3 is mounted on the hollow inner wall, the balls 4 are clamped in the interior of the retaining frame 3, the retaining frame 3 is in a changed shape, and the balls 4 are equidistantly mounted in the interior thereof.

[0026] In one embodiment of the present invention, the guide rail 5 includes a limit seat 51 and a guide rod 52 . The limit seat 51 is provided in two groups, and the surface of the guide rod 52 is set to be smooth. The two groups of the limit seats 51 are both provided at both ends of the guide rod 52 .

[0027] In one embodiment of the present invention, the flange 21 and the housing 2 are integrally formed, and a mounting hole is provided on the surface of the flange 21 .

[0028] In one embodiment of the present invention, the guide rod 52 passes through the housing 2 and is rollingly connected to the ball 4 .

[0029] In one embodiment of the present invention: the limiting seat 51 is fixedly connected to the external structure by bolts.

[0030] In one embodiment of the present invention: the material of the retaining frame 3 is wear-resistant plastic.

[0031] In one embodiment of the present invention, the number of the balls 4 is set accordingly according to the length of the linear bearing 1 .

[0032] Example 1, please refer to the attached Figure 1 -Attached Figure 4 , there are two groups of limit seats 51, which are respectively located at the two ends of the guide rod 52, and play the role of limiting and fixing the position of the linear bearing 1. The surface of the guide rod 52 is processed into a smooth state, which helps to reduce the friction between the guide rod 52 and the ball 4, so that the linear bearing 1 runs more smoothly;

[0033] This design not only enhances the overall strength and stability of the linear bearing 1, but also facilitates the manufacturing and installation process. The surface of the flange 21 is provided with mounting holes, through which the linear bearing 1 can be firmly fixed to a desired position using fasteners such as bolts;

[0034] The guide rod 52 passes through the interior of the housing 2 and is rollingly connected to the ball 4. When the linear bearing 1 is working, the ball 4 rolls along the surface of the guide rod 52 under the restriction of the retaining frame 3, thereby realizing linear motion. This rolling connection method effectively reduces friction resistance and improves the efficiency and service life of the linear bearing 1.

[0035] Example 2, please refer to the attached Figure 1 -Attached Figure 4 The limit seat 51 is fixedly connected to the external structure by bolts. This connection method is simple and reliable, easy to install and disassemble, and also easy to maintain and service the linear bearing 1. The setting of the limit seat 51 provides stable support and restriction for the linear bearing 1, ensuring that it will not deviate or shake during operation;

[0036] The material of the retaining frame 3 is wear-resistant plastic, which has good wear resistance and corrosion resistance, can effectively protect the balls 4, and ensure their stability and uniform distribution during operation. At the same time, the number of balls 4 is set accordingly according to the length of the linear bearing 1 to meet the needs of linear bearings 1 of different lengths and ensure the optimization of their performance.

[0037] Specifically, the one-piece flange 21 and shell 2 structure not only enhances the overall strength and stability, but also facilitates installation and fixation. The guide rod 52 has a smooth surface and is smoothly connected to the ball 4 in rolling, which reduces friction resistance and improves operating efficiency. The retaining frame 3 is made of wear-resistant plastic to extend its service life. At the same time, the number of balls 4 can be set according to the length of the linear bearing 1, ensuring good performance under different length requirements. In addition, the limit seat 51 is fixedly connected to the external structure by bolts, which is easy to install and disassemble, and easy to maintain. This design enables the linear bearing 1 to work stably and efficiently in various industrial applications, and provide reliable support and guidance for the operation of mechanical equipment.

[0038] Specifically, its unique structural design makes the linear bearing 1 more stable during operation, reduces vibration and noise, the one-piece structure of the flange 21 and the housing 2 improves the connection strength and sealing performance, prevents dust and impurities from entering, and protects the internal structure, and the rolling connection between the guide rod 52 and the ball 4 greatly reduces friction and improves energy transfer efficiency. The retaining frame 3 made of wear-resistant plastic not only has good wear resistance, but also can ensure the uniform distribution and stable operation of the ball 4. The setting of the limit seat 51 provides stable support and limitation for the linear bearing 1 to ensure that it does not deviate during operation. At the same time, the flexible setting of the number of balls 4 meets the needs of linear bearings 1 of different lengths, making it more adaptable. These beneficial effects enable the linear bearing 1 to perform well in industrial production and provide a strong guarantee for improving production efficiency and product quality.

[0039] Working principle:

[0040] First, the flange 21 is connected and fixed to the external structure through the mounting hole, the guide rod 52 passes through the inside of the shell 2, and the limit seat 51 is fixed to the external structure by bolts to complete the installation of the linear bearing 1. When the linear bearing 1 is working, the ball 4 rolls in the retaining frame 3 and contacts with the smooth surface of the guide rod 52 to achieve smooth linear motion. The wear-resistant plastic material of the retaining frame 3 reduces wear and ensures the stable operation of the ball 4. The number of the ball 4 is adjusted accordingly according to the length of the linear bearing 1 to adapt to different working requirements. At this point, the entire work process is completed.

[0041] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0043] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above-mentioned utility model, the details of its power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by technical personnel in this field.

[0044] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0046] For those skilled in the art, various changes, modifications, substitutions and variations can be made to these implementations without departing from the principles and spirit of the present invention, and they still fall within the protection scope of the present invention.

Claims

1. An extended linear bearing, comprising a guide rail (5) for a linear bearing (1), characterized in that: The linear bearing (1) comprises a housing (2), a retaining frame (3) and balls (4); the bottom end of the housing (2) is provided with a flange (21) and the interior is hollowed out; the retaining frame (3) is mounted on the hollow inner wall; the balls (4) are clamped inside the retaining frame (3); the retaining frame (3) is in a ring shape, and the balls (4) are equidistantly mounted inside the retaining frame.

2. The extended linear bearing according to claim 1, characterized in that: The guide rail (5) comprises a limiting seat (51) and a guide rod (52). The limiting seat (51) is provided in two groups, and the surface of the guide rod (52) is set to be smooth. The two groups of limiting seats (51) are both provided at two ends of the guide rod (52).

3. The extended linear bearing according to claim 1, characterized in that: The flange (21) and the housing (2) are an integrally formed structure, and a mounting hole is provided on the surface of the flange (21).

4. The extended linear bearing according to claim 2, characterized in that: The guide rod (52) penetrates the interior of the housing (2) and is rollingly connected to the ball (4).

5. The extended linear bearing according to claim 4, characterized in that: The limiting seat (51) is fixedly connected to the external structure via bolts.

6. The extended linear bearing according to claim 5, characterized in that: The material of the retaining frame (3) is wear-resistant plastic.

7. The extended linear bearing according to claim 1, characterized in that: The number of the balls (4) is set accordingly according to the length of the linear bearing (1).

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