High-precision main shaft bearing

Abstract

The utility model provides a high-precision main shaft bearing, which relates to the technical field of bearings, and comprises an inner ring, a retainer and an outer ring, the outer surface of the inner ring is provided with a first groove, and the inner surface of the outer ring is provided with a second groove. According to the utility model, when the main shaft bearing is used and the dustproof cover rotates at a high speed along with the main shaft, the movable plate moves outwards under the action of centrifugal force, the movable plate moves outwards to compress the dustproof cover, and after the dustproof cover is compressed, the notch is in an open state, and at the moment, the bearing can perform ventilation and heat dissipation through the position of the notch; after the main shaft stops running, the resilience force of the spring is utilized to drive the moving plate to reset, so that the dust cover continues to block the notch, the purpose of dust prevention through automatic sealing when the bearing stops running is achieved, unsmooth running caused by dust entering the bearing in a static state is avoided, and the precision of the bearing is improved.

Description

Technical Field

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

[0002] Bearings are key components used to support mechanical bearings and reduce friction. They can support the axial and radial loads of the shaft during rotational motion and keep the mechanical equipment running stably.

[0003] In the prior art, when the spindle bearing is in use, in order to ensure the heat dissipation performance of the bearing when the spindle is running, a dust cover is usually not installed on the outside of the bearing. However, when the spindle stops running, the balls inside the bearing are exposed, which will cause dust to accumulate inside the bearing, affecting the smooth operation of the bearing and further affecting the precision of the bearing. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that in the prior art, when the spindle bearing is in use, in order to ensure the heat dissipation performance of the bearing when the spindle is running, a dust cover is usually not installed on the outside of the bearing. However, when the spindle stops running, the balls inside the bearing are exposed, which makes it easy for dust to accumulate inside the bearing, affecting the smooth operation of the bearing and further affecting the precision of the bearing. A high-precision spindle bearing is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-precision spindle bearing, comprising: an inner ring, a retaining frame and an outer ring, the outer surface of the inner ring is provided with a first groove, the inner surface of the outer ring is provided with a second groove, and the end surface of the inner ring is evenly provided with a plurality of holes; a cover plate assembly, the number of the cover plate assemblies is set to two, the two cover plate assemblies are respectively located on the two side end surfaces of the inner ring, the cover plate assembly includes a dust cover, the outer surface of the dust cover is evenly provided with a plurality of notches; an installation assembly, the installation assembly is located outside the dust cover, and the installation assembly includes two support plates.

[0006] Preferably, the retaining frame is located between the inner ring and the outer ring, and a plurality of balls are evenly arranged on the inner side of the retaining frame.

[0007] Preferably, the outer surface of the ball is slidably connected to the inner surface of the first groove, and the outer surface of the ball is slidably connected to the inner surface of the second groove.

[0008] Preferably, a plurality of first through holes are evenly formed on the outer surface of the dust cover, and the first through holes match the positions of the insertion holes.

[0009] Preferably, a first fixing plate is fixedly connected to the inner surface of one side of the notch, and a second fixing plate is fixedly connected to the inner surface of the other side of the notch.

[0010] Preferably, springs are symmetrically fixedly connected to the outer surface of the second fixing plate on one side close to the first fixing plate, and a movable plate is fixedly connected between the two spring end surfaces.

[0011] Preferably, a dust cover is fixedly connected between the second fixed plate and the movable plate, the dust cover is located outside the spring, and the outer surface of the dust cover is in contact with the inner surface of the notch.

[0012] Preferably, the spring is in an extended state, and the movable plate is located on one side of the dust cover close to the inner surface.

[0013] Preferably, a plurality of second through holes are evenly formed on the outer surface of the support plate, and the second through holes match the positions of the insertion holes.

[0014] Preferably, a screw is inserted into the inner surface of the second through hole, and a nut is symmetrically threadedly connected to the outer surface of the screw, and the nut is located outside the support plate.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] 1. In the utility model, when the spindle bearing is in use, when the dust cover follows the high-speed operation of the spindle, the movable plate will move outward under the action of centrifugal force. The movable plate can compress the dust cover by moving outward. After the dust cover is compressed, the notch is in an open state. At this time, the bearing can be ventilated and dissipated through the notch position. After the spindle stops running, the rebound force of the spring is used to drive the movable plate to reset, so that the dust cover continues to block the notch position, thereby achieving the purpose of automatically closing the bearing to prevent dust when it stops running, avoiding dust from entering the bearing when it is stationary and causing poor operation, thereby improving the precision of the bearing.

[0017] 2. In the utility model, the dust cover is supported by the support plates on both sides. When the dust cover is installed and fixed, the screw is inserted through the second through hole, and the nuts on both sides are tightened to clamp the dust cover and the inner ring. The dust cover can be freely disassembled, which is convenient for maintenance of the inside of the bearing and improves the convenience of using the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a high-precision spindle bearing is proposed for the utility model;

[0019] Figure 2 A schematic diagram of a ball installation structure of a high-precision spindle bearing is proposed for the utility model;

[0020] Figure 3 A schematic diagram of the structure of a cover plate assembly of a high-precision spindle bearing is proposed for the utility model;

[0021] Figure 4 A schematic diagram of the structure of a dust cover for a high-precision spindle bearing is provided for the utility model;

[0022] Figure 5 A schematic diagram of the structure of an installation component of a high-precision spindle bearing is proposed for the utility model.

[0023] Legend: 1. Inner ring; 2. First groove; 3. Socket; 4. Retaining frame; 5. Ball; 6. Outer ring; 7. Second groove; 8. Cover assembly; 801. Dust cover; 802. Notch; 803. First through hole; 804. First fixed plate; 805. Second fixed plate; 806. Spring; 807. Moving plate; 808. Dust cover; 9. Mounting assembly; 901. Support plate; 902. Second through hole; 903. Screw; 904. Nut. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0026] Embodiment 1, as Figure 1-Figure 5As shown, the utility model provides a high-precision spindle bearing, including: an inner ring 1, a retaining frame 4 and an outer ring 6, the outer surface of the inner ring 1 is provided with a first groove 2, the inner surface of the outer ring 6 is provided with a second groove 7, and the end surface of the inner ring 1 is evenly provided with a plurality of jacks 3; a cover plate assembly 8, the number of the cover plate assemblies 8 is set to two, the two cover plate assemblies 8 are respectively located on the two side end surfaces of the inner ring 1, the cover plate assembly 8 includes a dust cover 801, and the outer surface of the dust cover 801 is evenly provided with a plurality of notches 802; a mounting assembly 9, the mounting assembly 9 is located at the outer side of the dust cover 801, the mounting assembly 9 includes two support plates 901, the retaining frame 4 is located between the inner ring 1 and the outer ring 6, a plurality of balls 5 are evenly arranged on the inner side of the retaining frame 4, the outer surface of the ball 5 is slidably connected to the inner surface of the first groove 2, and the outer surface of the ball 5 is slidably connected to the inner surface of the second groove 7 is slidably connected to the inner surface, a plurality of first through holes 803 are evenly opened on the outer surface of the dust cover 801, the first through holes 803 are matched with the position of the jack 3, a first fixing plate 804 is fixedly connected to the inner surface of one side of the notch 802, a second fixing plate 805 is fixedly connected to the inner surface of the other side of the notch 802, a spring 806 is symmetrically fixedly connected to the outer surface of the second fixing plate 805 close to the first fixing plate 804, a moving plate 807 is fixedly connected between the end surfaces of the two springs 806, a dust cover 808 is fixedly connected between the second fixing plate 805 and the moving plate 807, the dust cover 808 is located at the outer side of the spring 806, the outer surface of the dust cover 808 is in contact with the inner surface of the notch 802, the spring 806 is in an extended state, and the moving plate 807 is located at the side of the dust cover 801 close to the inner surface.

[0027] The effect achieved by the entire embodiment 1 is that when the spindle bearing is in use, the position of the ball 5 is limited by the use of the retaining frame 4, and the ball 5 can roll inside the first groove 2 and the second groove 7, so that the inner ring 1 can rotate freely to realize the use of the bearing. When the spindle connected to the bearing is in operation, the spindle drives the inner ring 1 to rotate accordingly, and the inner ring 1 can drive the dust covers 801 on both sides to rotate accordingly. When the dust cover 801 is in a stationary state, the rebound force of the spring 806 is used to make the movable plate 807 fit the first fixed plate 804. At this time, the dust cover 808 is in a stretched state and completely blocked at the position of the notch 802, so that the dust cover 801 is in a closed state as a whole, providing a dustproof protection function for the inner side of the bearing. When the dust cover 801 is in a stationary state, the rebound force of the spring 806 is used to make the movable plate 807 fit the first fixed plate 804. At this time, the dust cover 808 is in a stretched state and completely blocked at the position of the notch 802, so that the dust cover 801 is in a closed state as a whole, providing a dustproof protection function for the inner side of the bearing. When the main shaft is running at high speed, since the movable plate 807 is located at the inner side close to the inner ring 1, centrifugal force will be generated as the dust cover 801 rotates at high speed. The movable plate 807 will move outward under the action of the centrifugal force. The movable plate 807 can compress the dust cover 808 by moving outward. After the dust cover 808 is compressed, the slot 802 is in an open state. At this time, the bearing can be ventilated and dissipated through the slot 802. After the main shaft stops running, the rebound force of the spring 806 is used to drive the movable plate 807 to reset, so that the dust cover 808 continues to block the slot 802, thereby achieving the purpose of automatically closing the bearing for dust prevention when it stops running, avoiding dust from entering the bearing when it is stationary and causing poor operation, thereby improving the precision of the bearing.

[0028] Embodiment 2, as Figure 1-Figure 5 As shown, a plurality of second through holes 902 are evenly opened on the outer surface of the support plate 901, and the second through holes 902 match the position of the socket 3. A screw rod 903 is inserted into the inner surface of the second through hole 902, and a nut 904 is symmetrically threadedly connected to the outer surface of the screw rod 903, and the nut 904 is located on the outer side of the support plate 901.

[0029] The effect achieved by the entire embodiment 2 is that the dust cover 801 is provided with installation support by the support plates 901 on both sides. When the dust cover 801 is installed and fixed, the screw 903 is inserted through the second through hole 902, and the nuts 904 on both sides are tightened to clamp the dust cover 801 and the inner ring 1. The dust cover 801 can be freely disassembled, which is convenient for maintenance of the inside of the bearing and improves the convenience of using the bearing.

[0030] Working principle: When the spindle bearing is in use, the position of the ball 5 is limited by the use of the retaining frame 4, and the ball 5 can roll inside the first groove 2 and the second groove 7, so that the inner ring 1 can rotate freely to realize the use of the bearing. When the spindle connected to the bearing is in operation, the spindle drives the inner ring 1 to rotate accordingly, and the inner ring 1 can drive the dust covers 801 on both sides to rotate accordingly. When the dust cover 801 is in a stationary state, the rebound force of the spring 806 is used to make the movable plate 807 fit the first fixed plate 804. At this time, the dust cover 808 is in a stretched state and completely blocked in the position of the notch 802, so that the dust cover 801 is in a closed state as a whole, providing a dustproof protection function for the inner side of the bearing. When the dust cover 801 follows the high-speed operation of the spindle, since the movable plate 807 is in an inner position close to the inner ring 1, centrifugal force will be generated as the dust cover 801 rotates at a high speed, and the movable plate 807 will move outward under the action of the centrifugal force. The movable plate 807 moves sideways and moves outward to compress the dust cover 808. After the dust cover 808 is compressed, the slot 802 is in an open state. At this time, the bearing can be ventilated and dissipated through the slot 802. After the spindle stops running, the rebound force of the spring 806 is used to drive the movable plate 807 to reset, so that the dust cover 808 continues to block the slot 802, thereby achieving the purpose of automatic sealing for dust prevention when the bearing stops running, avoiding dust from entering the bearing when it is in a stationary state and causing poor operation, thereby improving the precision of the bearing. The dust cover 801 is provided with installation support by the support plates 901 on both sides. When the dust cover 801 is installed and fixed, the screw 903 is inserted through the second through hole 902, and the nuts 904 on both sides are tightened to clamp the dust cover 801 and the inner ring 1. The dust cover 801 can be freely disassembled, which is convenient for maintenance of the inside of the bearing and improves the convenience of using the bearing.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A high-precision spindle bearing, characterized in that: include: An inner ring (1), a retaining frame (4) and an outer ring (6), wherein the outer surface of the inner ring (1) is provided with a first groove (2), the inner surface of the outer ring (6) is provided with a second groove (7), and the end surface of the inner ring (1) is evenly provided with a plurality of insertion holes (3); A cover plate assembly (8), wherein the number of the cover plate assemblies (8) is set to two, and the two cover plate assemblies (8) are respectively located on the end surfaces of both sides of the inner ring (1), and the cover plate assembly (8) comprises a dust cover (801), and the outer surface of the dust cover (801) is evenly provided with a plurality of notches (802); A mounting assembly (9), wherein the mounting assembly (9) is located outside the dust cover (801), and the mounting assembly (9) comprises two support plates (901).

2. The high-precision spindle bearing according to claim 1, characterized in that: The retaining frame (4) is located between the inner ring (1) and the outer ring (6), and a plurality of balls (5) are evenly arranged on the inner side of the retaining frame (4).

3. The high-precision spindle bearing according to claim 2, characterized in that: The outer surface of the ball (5) is slidably connected to the inner surface of the first groove (2), and the outer surface of the ball (5) is slidably connected to the inner surface of the second groove (7).

4. The high-precision spindle bearing according to claim 1, characterized in that: A plurality of first through holes (803) are evenly formed on the outer surface of the dust cover (801), and the positions of the first through holes (803) match those of the insertion holes (3).

5. The high-precision spindle bearing according to claim 1, characterized in that: A first fixing plate (804) is fixedly connected to the inner surface of one side of the notch (802), and a second fixing plate (805) is fixedly connected to the inner surface of the other side of the notch (802).

6. The high-precision spindle bearing according to claim 5, characterized in that: A spring (806) is symmetrically fixedly connected to the outer surface of one side of the second fixed plate (805) close to the first fixed plate (804), and a movable plate (807) is fixedly connected between the end surfaces of the two springs (806).

7. The high-precision spindle bearing according to claim 6, characterized in that: A dust cover (808) is fixedly connected between the second fixed plate (805) and the movable plate (807), and the dust cover (808) is located outside the spring (806), and the outer surface of the dust cover (808) is in contact with the inner surface of the notch (802).

8. The high-precision spindle bearing according to claim 6, characterized in that: The spring (806) is in an extended state, and the movable plate (807) is located on one side of the dust cover (801) close to the inner surface.

9. The high-precision spindle bearing according to claim 1, characterized in that: A plurality of second through holes (902) are evenly formed on the outer surface of the support plate (901), and the positions of the second through holes (902) match those of the insertion holes (3).

10. The high-precision spindle bearing according to claim 9, characterized in that: A screw rod (903) is inserted into the inner surface of the second through hole (902), and a nut (904) is symmetrically threadedly connected to the outer surface of the screw rod (903), and the nut (904) is located outside the support plate (901).

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