High-precision bearing

Abstract

The high-precision bearing comprises an outer ring and an inner ring, the inner ring is rotatably connected to the inner ring wall of the outer ring in a penetrating mode, check rings are horizontally and symmetrically arranged on the outer ring wall of the outer ring in the transverse direction, and synchronous belt teeth are arranged on the outer ring wall of the outer ring and located between the check rings in a surrounding mode. A rolling part for rotating the outer ring is arranged at the joint of the outer ring and the inner ring, and an oil injection mechanism for lubricating the rolling part is arranged on the inner ring wall of the inner ring. According to the utility model, the inner ring and the outer ring can rotate with smaller friction through the arrangement of the rolling element, and then the rolling element can be lubricated by oil injection through the arrangement of the oil injection mechanism under the condition that the inner ring and the outer ring do not need to be disassembled, so that the lubricating oil can be smoothly added, and the service life of the rolling element is prolonged. And the inner ring and the outer ring do not need to be disassembled, so that the stability of the whole bearing structure is ensured, and the vibration precision of the integrated bearing in the scheme is less than or equal to 4 mu during rotation.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to a high-precision bearing. Background Art

[0002] During the CT inspection of products, a rotating mechanism is required to drive the inspection mechanism to rotate the product around the inspection. The necessary structure for driving these inspection mechanisms to rotate is the bearing, and the bearing used to complete this task is an integrated synchronous wheel bearing.

[0003] The existing integrated synchronous wheel bearings of this type are composed of an inner ring and an outer ring. A synchronous toothed belt is set on the outer wall of the outer ring through the enclosure of the retaining ring. During the rotation of the bearing, rolling elements are used for support and to reduce the friction of the rotation. In order to further reduce the friction, lubricating oil is added to the rolling elements. The existing method of adding lubricating oil requires the inner ring and the outer ring to be disassembled in order to add lubricating oil. Under such operation, the connection between the inner ring and the outer ring will cause wear, and the bearing will be blocked, stuck and offset during rotation. This makes the bearing rotation operation not smooth, and the accuracy of the required rotation angle is reduced. Utility Model Content

[0004] The purpose of the present invention is to provide a high-precision bearing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-precision bearing, comprising an outer ring and an inner ring, the outer ring being rotatably sleeved on the outer ring wall of the inner ring, the outer ring wall of the outer ring being horizontally and laterally symmetrically provided with retaining rings, the outer ring wall of the outer ring being surrounded by synchronous belt teeth and located between the retaining rings, a rolling element for rotating the outer ring being provided between the connection between the outer ring and the inner ring, and an oil injection mechanism for lubricating the rolling element being provided on the inner ring wall of the inner ring.

[0006] Preferably, a sealing strip is provided between the connection between the outer ring wall of the inner ring and the inner ring wall of the outer ring for sealing the connection between the two.

[0007] Preferably, the rolling element includes:

[0008] Rollers, a plurality of said rollers are arranged in a circumferential manner between the outer ring wall of the inner ring and the inner ring wall of the outer ring;

[0009] Isolation blocks, a plurality of the isolation blocks are circumferentially arranged between the outer ring wall of the inner ring and the inner ring wall of the outer ring, and a plurality of the isolation blocks are inserted and connected between adjacent rollers.

[0010] Preferably, a plug is inserted and connected to the inner ring wall of the inner ring, and a tapered pin is inserted and connected to the back side of the inner ring and passes through the middle of the plug.

[0011] Preferably, the oil injection mechanism includes an oil nozzle centrally and symmetrically arranged on the inner ring wall of the inner ring.

[0012] Preferably, hoisting holes for hoisting are symmetrically opened horizontally on both sides of the front side of the inner ring, and screw plugs are inserted into the hoisting holes.

[0013] Preferably, mounting holes for connecting operating components are provided on the top and bottom of the front surface of the inner ring, and fixing holes for fixing the bearing are provided on the back surface of the outer ring and around the side close to the inner ring wall.

[0014] The technical effects and advantages of this utility model are:

[0015] The utility model first arranges a rolling element for rotating the outer ring between the connection of the outer ring and the inner ring. The arrangement of the rolling element allows the inner and outer rings to rotate with less friction. Then, an oil injection mechanism for lubricating the rolling element is arranged through the inner ring wall of the inner ring. The arrangement of the oil injection mechanism allows the rolling element to be oiled and lubricated without disassembling the inner and outer rings. With such an arrangement, while ensuring the smooth addition of lubricating oil, there is no need to disassemble the inner and outer rings. This ensures the stability of the entire bearing structure and ensures that the bearing can be rotated with high precision, so that the one-piece bearing of this scheme achieves a runout accuracy of ≤4μ during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the utility model as a whole.

[0017] Figure 2 It is a front view of the overall structure of the utility model.

[0018] Figure 3 It is a front cross-sectional view of the overall structure of the utility model.

[0019] Figure 4 It is a side sectional view of the overall structure of the utility model.

[0020] In the figure: 1. Outer ring; 2. Inner ring; 3. Retaining ring; 4. Synchronous belt teeth; 5. Grease nipple; 6. Taper pin; 7. Plug; 8. Roller; 9. Isolation block; 10. Sealing strip; 11. Thread plug; 12. Mounting hole; 13. Fixing hole. DETAILED DESCRIPTION

[0021] 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. 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.

[0022] The utility model provides Figure 1-4 The high-precision bearing shown in the figure comprises an outer ring 1 and an inner ring 2, wherein the outer ring 1 is rotatably sleeved on the outer ring wall of the inner ring 2;

[0023] Specifically, a sealing strip 10 is provided between the connection between the outer ring wall of the inner ring 2 and the inner ring wall of the outer ring 1 for sealing the connection between the two.

[0024] It should be noted that the sealing strip 10 is provided after the inner ring 2 and the outer ring 1 are connected to seal the connection between the two. With such a structural setting, the combined gap between the inner ring 2 and the outer ring 1 can be ensured to be sealed.

[0025] The outer ring wall of the outer ring 1 is horizontally and laterally symmetrically provided with a retaining ring 3. The outer ring wall of the outer ring 1 is surrounded by a synchronous belt tooth 4 located between the retaining ring 3. A rolling element for the rotation of the outer ring 1 is provided between the connection between the outer ring 1 and the inner ring 2. The inner ring wall of the inner ring 2 is provided with an oil injection mechanism for lubricating the rolling element.

[0026] It should be noted that in this configuration, the outer ring 1 has an annular groove formed on its outer wall. This groove is used to carry rolling elements. After the outer ring 1 is assembled with the inner ring 2, the rolling elements placed within the groove are sealed. The synchronous belt teeth 4 refer to the protruding portions of the synchronous belt, also known as the tooth profile. They engage with the corresponding tooth grooves on the synchronous pulley to transmit power. The design and shape of the synchronous belt teeth 4 are determined by the specific application requirements and typically adopt triangular, rectangular, cylindrical, and other shapes. The size, spacing, and tooth profile accuracy of the synchronous belt teeth 4 have a significant impact on the transmission effect and performance of the synchronous belt.

[0027] Specifically, the rolling elements include:

[0028] Rollers 8, multiple rollers 8 are arranged in a circumferential manner between the outer ring wall of the inner ring 2 and the inner ring wall of the outer ring 1;

[0029] It should be noted that the roller 8 is a cylindrical rolling element used to carry or transmit loads, reduce friction and braking force.

[0030] Isolation blocks 9, multiple isolation blocks 9 are arranged around the outer ring wall of the inner ring 2 and the inner ring wall of the outer ring 1, and multiple isolation blocks 9 are inserted and connected between adjacent rollers 8. Through the setting of the isolation blocks 9, it is ensured that the surrounding rollers 8 can maintain the set position and roll, and the isolation blocks 9 are made of nylon; nylon is a multifunctional synthetic polymer, also known as polyamide, which usually has excellent wear resistance, corrosion resistance and mechanical strength, and also has good self-lubrication and wear resistance.

[0031] Furthermore, a plug 7 is inserted and connected to the inner ring wall of the inner ring 2, and a tapered pin 6 is inserted and connected to the back side of the inner ring 2 and through the middle of the plug 7.

[0032] Furthermore, the oil injection mechanism includes an oil nozzle 5 centrally and symmetrically arranged on the inner ring wall of the inner ring 2. The oil nozzle 5 is made of brass material and is installed in a submerged structure.

[0033] Specifically, hoisting holes for hoisting are symmetrically opened horizontally on both sides of the front side of the inner ring 2, and screw plugs 11 are inserted into the hoisting holes.

[0034] It should be noted that the lifting hole penetrates the inner ring 2 and can be used for lifting operations. When not in use, it is blocked with a screw plug 11. The screw plug 11 is a common pipe connector used to form a seal in the pipeline and prevent fluid or gas leakage. It is usually made of metal materials such as brass or stainless steel. The main feature of the screw plug 11 is its threaded connection design. It has an internal thread that can match the thread on the lifting hole. By rotating the screw plug 11 and embedding its thread with the thread of the lifting hole, a seal can be formed to prevent fluid or gas leakage between the inner ring 2 and the outer ring 1.

[0035] Furthermore, mounting holes 12 for connecting operating components are provided on the top and bottom of the front side of the inner ring 2, and fixing holes 13 for fixing the bearing are provided on the back side of the outer ring 1 and around the side close to the inner ring wall.

[0036] It should be noted that the setting of the mounting hole 12 can be used to connect the detection structure. In the setting of this scheme, since CT detection is required, a radiation source and a detector are required, so the two sets of structures need to be set symmetrically. In this scheme, two sets of mounting holes 12 are opened and set symmetrically. The setting of the fixing hole 13 facilitates the installation and connection of the entire bearing. At the same time, through such a setting, the entire bearing integrated assembly structure is made tighter, thereby ensuring that the vibration accuracy of the entire bearing is less than or equal to four μ when rotating.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision bearing, comprising an outer ring (1) and an inner ring (2), wherein the outer ring (1) is rotatably sleeved on the outer ring wall of the inner ring (2), characterized in that: The outer ring wall of the outer ring (1) is horizontally and laterally symmetrically provided with a retaining ring (3); the outer ring wall of the outer ring (1) is surrounded by a synchronous belt tooth (4) located between the retaining ring (3); a rolling element for rotating the outer ring (1) is provided between the connection between the outer ring (1) and the inner ring (2); and an oil injection mechanism for lubricating the rolling element is provided on the inner ring wall of the inner ring (2).

2. A high-precision bearing according to claim 1, characterized in that: A sealing strip (10) is provided between the connection between the outer ring wall of the inner ring (2) and the inner ring wall of the outer ring (1) for sealing the connection between the two.

3. A high-precision bearing according to claim 1, characterized in that: The rolling element comprises: Rollers (8), a plurality of rollers (8) are arranged in a circumferential manner between the outer ring wall of the inner ring (2) and the inner ring wall of the outer ring (1); Isolation blocks (9), a plurality of the isolation blocks (9) are disposed around the outer ring wall of the inner ring (2) and the inner ring wall of the outer ring (1), and a plurality of the isolation blocks (9) are inserted and connected between adjacent rollers (8).

4. A high-precision bearing according to claim 3, characterized in that: A plug (7) is inserted and connected to the inner ring wall of the inner ring (2), and a cone pin (6) is inserted and connected to the back side of the inner ring (2) and passes through the middle of the plug (7).

5. A high-precision bearing according to claim 1, characterized in that: The oil injection mechanism comprises an oil nozzle (5) centrally and symmetrically arranged on the inner ring wall of the inner ring (2).

6. A high-precision bearing according to claim 1, characterized in that: The inner ring (2) has hoisting holes symmetrically provided horizontally on both sides of the front side thereof for hoisting, and a screw plug (11) is inserted and connected in the hoisting holes.

7. A high-precision bearing according to claim 3, characterized in that: The top and bottom of the front side of the inner ring (2) are provided with mounting holes (12) for connecting operating components, and the back side of the outer ring (1) and the side close to the inner ring wall are provided with fixing holes (13) for fixing the bearing.

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