A lathe spindle bearing

Abstract

The utility model discloses a lathe main shaft bearing belongs to bearing technical field. A lathe main shaft bearing, including the outer ring, the inner ring, the ball, be provided with first storage groove on the outer wall of outer ring, be provided with second storage groove on the outer wall of inner ring, and the ball is located in first storage groove, second storage groove, the left storage groove is provided with left sealing cover, right sealing cover in left sealing cover, the utility model provides a lathe main shaft bearing, through left sealing cover, right sealing cover of outer ring and inner ring outside setting, the sealing cavity that left sealing cover, right sealing cover are connected and form, can enclose outer ring, inner ring, ball, and the area of relative motion of outer ring, inner ring, ball is isolated, like this can better protect the work surface of outer ring, inner ring, ball, and simultaneously in the sealing cavity lubricating grease is passed in, and the component such as ball is lubricated, sealed, can prolong the service life of outer ring, inner ring, ball in lathe.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, specifically relating to a lathe spindle bearing. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy.

[0003] The lathe spindle holds the workpiece in place. During machining, cutting fluid is sprayed onto the workpiece for cooling and lubrication. This cutting fluid can easily splash onto surrounding components and increase humidity near the lathe. This causes wear on the working surfaces of the outer ring, inner ring, and balls, which experience frequent relative movement, resulting in a shorter bearing lifespan. Therefore, this application proposes a lathe spindle bearing. Utility Model Content

[0004] The purpose of this invention is to provide a lathe spindle bearing that solves the problem mentioned in the background art, where the working surfaces of the outer ring, inner ring, and balls are prone to wear due to high humidity near the lathe spindle and frequent relative movement, resulting in a short bearing life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lathe spindle bearing, comprising an outer ring, an inner ring, and balls, wherein a first storage groove is provided on the inner wall of the outer ring, and a second storage groove is provided on the outer wall of the inner ring, and the balls are located in the first storage groove and the second storage groove; The outer ring is provided with a left sealing cover and a right sealing cover. The left sealing cover is provided with a left storage groove, and the right sealing cover is provided with a right sealing groove. The left and right sealing caps are connected by locking pins. The left and right sealing caps surround a sealing cavity for storing the outer and inner rings. Lubricating grease is introduced into the sealing cavity. The right sealing cap is provided with an injection hole that communicates with the sealing cavity, and a plunger for sealing is provided at the injection hole. Both the left and right sealing covers are equipped with sealing units for sealing the sealing cavity.

[0006] Preferably, the first storage slot is recessed towards the side away from the inner ring, and the second storage slot is recessed towards the side away from the outer ring.

[0007] Preferably, a left cage and a right cage are provided between the outer ring and the inner ring, and the left cage and the right cage are located on both sides of the ball.

[0008] Preferably, the left retainer has a left groove that fits against the outer wall of the ball, and the right retainer has a right groove that fits against the outer wall of the ball.

[0009] Preferably, the left retainer has a first through hole, the right retainer has a second through hole, and a positioning pin is provided between the left and right retainers, with one end of the positioning pin passing through the first through hole and the other end of the positioning pin passing through the second through hole.

[0010] Preferably, the left storage groove is fitted to the side wall of the outer ring, and there is a first gap between the left storage groove and the side wall of the inner ring; the right sealing groove is fitted to the side wall of the outer ring, and there is a second gap between the right sealing groove and the side wall of the inner ring.

[0011] Preferably, the locking pin includes a rod body, a head, and a tail end, and an operating groove is provided on the left sealing cover at the position corresponding to the rod body.

[0012] Preferably, there are multiple locking pins, and the multiple locking pins are distributed in a circumferential array around the center line of the left sealing cover.

[0013] Preferably, a retaining ring is provided at the left sealing cover, and a retaining groove that mates with the retaining ring is provided inside the right sealing cover.

[0014] Preferably, the sealing unit includes a first sealing component and a second sealing component, both of which are sealing rings, and the diameter of the first sealing component is larger than the diameter of the second sealing component.

[0015] Beneficial effects: I. The lathe spindle bearing provided by this utility model has a sealing cavity formed by setting a left sealing cover and a right sealing cover on the outer and inner rings respectively. The left and right sealing covers are connected to form a sealing cavity that can surround the outer ring, inner ring, and balls, and isolate the areas where the outer ring, inner ring, and balls move relative to each other. This can better protect the working surfaces of the outer ring, inner ring, and balls. At the same time, grease is introduced into the sealing cavity to lubricate and seal the balls and other components, which can extend the service life of the outer ring, inner ring, and balls in the lathe.

[0016] II. The present invention provides a lathe spindle bearing in which the left and right sealing covers are fixedly connected by locking pins. The locking pins need to be inserted into the left and right sealing covers. The insertion of the locking pins requires pressure from auxiliary components. Therefore, an operating groove is provided on the left sealing cover to facilitate the application of force by tools. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the lathe spindle bearing in this utility model; Figure 2 This is an exploded view of the lathe spindle bearing in this utility model; Figure 3 This is one of the internal structural diagrams of the lathe spindle bearing in this utility model; Figure 4This is the second schematic diagram of the internal structure of the lathe spindle bearing in this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Outer ring; 101. First storage slot; 2. Inner ring; 201. Second storage slot; 3. Ball bearing; 4. Left cage; 5. Right cage; 6. Locating pin; 7. Left sealing cover; 701. Operating slot; 8. Right sealing cover; 9. Locking pin; 10. Plunger; 11. First sealing assembly; 12. Second sealing assembly. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] like Figures 1-4 As shown in the figure, a lathe spindle bearing provided in this embodiment of the present invention includes an outer ring 1, an inner ring 2, and balls 3. A first storage groove 101 is provided on the inner wall of the outer ring 1, and the first storage groove 101 is recessed away from the inner ring 2. A second storage groove 201 is provided on the outer wall of the inner ring 2, and the second storage groove 201 is recessed away from the outer ring 1. The balls 3 are located in the first storage groove 101 and the second storage groove 201.

[0021] In order to ensure that the balls 3 are evenly distributed and to improve the impact resistance of the balls 3, a left retainer 4 and a right retainer 5 are provided between the outer ring 1 and the inner ring 2. The left retainer 4 and the right retainer 5 are located on both sides of the balls 3, and the left retainer 4 is provided with a left groove that fits against the outer wall of the balls 3, and the right retainer 5 is provided with a right groove that fits against the outer wall of the balls 3.

[0022] It should be noted that a first through hole is provided in the left retainer 4, a second through hole is provided in the right retainer 5, and a positioning pin 6 is provided between the left retainer 4 and the right retainer 5. One end of the positioning pin 6 passes through the first through hole, and the other end of the positioning pin 6 passes through the second through hole.

[0023] The lathe spindle fixes the workpiece in place. During machining, cutting fluid is sprayed onto the workpiece for cooling and lubrication. This cutting fluid can easily splash onto surrounding components and increase humidity near the lathe. Increased humidity shortens the lifespan of the outer ring 1, inner ring 2, and ball bearings 3. To protect the outer ring 1, inner ring 2, and ball bearings 3, a left sealing cover 7 and a right sealing cover 8 are provided on the outer ring 1. The left sealing cover 7 has a left storage groove that fits against the side wall of the outer ring 1 and has a first gap between it and the side wall of the inner ring 2. The right sealing cover 8 has a right sealing groove that fits against the side wall of the outer ring 1 and has a second gap between it and the side wall of the inner ring 2. This prevents the left and right sealing covers 7 and 8 from wearing against each other due to the rotation of the inner ring 2, thus ensuring their lifespan.

[0024] Specifically, the left sealing cover 7 and the right sealing cover 8 are fixedly connected by a locking pin 9. The locking pin 9 includes a rod, a head, and a tail. The left sealing cover 7 is provided with an operating groove 701 at the position corresponding to the rod.

[0025] It should be noted that multiple locking pins 9 are provided, and these multiple locking pins 9 are distributed in a circumferential array around the center line of the left sealing cover 7. A retaining ring is provided at the left sealing cover 7, and a retaining groove that mates with the retaining ring is provided inside the right sealing cover 8. The left sealing cover 7 and the right sealing cover 8 are fixedly connected by the locking pins 9. The locking pins 9 need to be inserted into the left sealing cover 7 and the right sealing cover 8. The insertion of the locking pins 9 requires pressure from an auxiliary component. Therefore, an operating groove 701 is provided on the left sealing cover 7 to facilitate the application of force by tools. The minimum dimension between the operating groove 701 and the right sealing cover 8 needs to be smaller than the minimum dimension between the end of the locking pin 9 furthest from the right sealing cover 8 and the right sealing cover 8. This ensures that the locking pin 9 can ultimately abut against the left sealing cover 7.

[0026] Specifically, the left sealing cover 7 and the right sealing cover 8 surround a sealing cavity for storing the outer ring 1 and the inner ring 2, and the corresponding ball 3 is also inside it. Lubricating grease is introduced into the sealing cavity. The right sealing cover 8 is provided with an injection hole that communicates with the sealing cavity, and a plunger 10 for sealing is provided at the injection hole.

[0027] To seal the sealing cavity, sealing units are provided inside both the left sealing cover 7 and the right sealing cover 8. Each sealing unit includes a first sealing component 11 and a second sealing component 12. Both the first sealing component 11 and the second sealing component 12 use sealing rings, with the diameter of the first sealing component 11 being larger than that of the second sealing component 12. The left sealing cover 7 and the right sealing cover 8 are positioned outside the outer ring 1 and the inner ring 2, respectively. The sealing cavity formed by the connection of the left and right sealing covers 7 and 8 surrounds the outer ring 1, the inner ring 2, and the ball bearing 3, isolating the areas where they move relative to each other. This better protects the working surfaces of the outer ring 1, the inner ring 2, and the ball bearing 3. Simultaneously, grease is introduced into the sealing cavity to lubricate and seal the ball bearing 3 and other components, extending the service life of the outer ring 1, the inner ring 2, and the ball bearing 3 within the lathe.

[0028] It should be noted that the inner diameter of the left sealing cover 7 is larger than the inner diameter of the inner ring 2, and the inner diameter of the right sealing cover 8 is larger than the inner diameter of the inner ring 2. This can prevent the left sealing cover 7 and the right sealing cover 8 from obstructing the inner ring 2 when it is connected to the spindle.

[0029] In summary, this utility model provides a lathe spindle bearing. A left sealing cover 7 and a right sealing cover 8 are provided on the outer sides of the outer ring 1 and inner ring 2. The sealing cavity formed by the connection of the left and right sealing covers 7 and 8 can surround the outer ring 1, inner ring 2, and balls 3, isolating the areas where the outer ring 1, inner ring 2, and balls 3 move relative to each other. This better protects the working surfaces of the outer ring 1, inner ring 2, and balls 3. Simultaneously, grease is introduced into the sealing cavity to lubricate and seal the balls 3 and other components, extending the service life of the outer ring 1, inner ring 2, and balls 3 in the lathe.

[0030] The left sealing cover 7 and the right sealing cover 8 are fixedly connected by a locking pin 9. The locking pin 9 needs to be inserted into the left sealing cover 7 and the right sealing cover 8. The insertion of the locking pin 9 requires pressure from an auxiliary component. Therefore, an operating groove 701 is provided on the left sealing cover 7 to facilitate the application of force by tools.

[0031] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A lathe spindle bearing, comprising an outer ring (1), an inner ring (2), and balls (3), characterized in that, The outer ring (1) has a first storage groove (101) on its inner wall and the inner ring (2) has a second storage groove (201) on its outer wall. The ball (3) is located in the first storage groove (101) and the second storage groove (201). A left sealing cover (7) and a right sealing cover (8) are provided at the outer ring (1). A left storage groove is provided inside the left sealing cover (7), and a right sealing groove is provided inside the right sealing cover (8). The left sealing cover (7) and the right sealing cover (8) are connected by a locking pin (9); The left sealing cover (7) and the right sealing cover (8) surround a sealing cavity for storing the outer ring (1) and the inner ring (2). Lubricating grease is introduced into the sealing cavity. The right sealing cover (8) is provided with an injection hole that communicates with the sealing cavity. A plunger (10) for sealing is provided at the injection hole. Both the left sealing cover (7) and the right sealing cover (8) are provided with sealing units for sealing the sealing cavity.

2. A lathe spindle bearing as described in claim 1, characterized in that, The first storage slot (101) is recessed away from the inner ring (2), and the second storage slot (201) is recessed away from the outer ring (1).

3. A lathe spindle bearing as described in claim 1, characterized in that, A left retainer (4) and a right retainer (5) are provided between the outer ring (1) and the inner ring (2), and the left retainer (4) and the right retainer (5) are located on both sides of the ball (3).

4. A lathe spindle bearing as described in claim 3, characterized in that, The left retainer (4) is provided with a left groove that fits against the outer wall of the ball (3), and the right retainer (5) is provided with a right groove that fits against the outer wall of the ball (3).

5. A lathe spindle bearing as described in claim 4, characterized in that, The left retainer (4) has a first through hole, and the right retainer (5) has a second through hole. A positioning pin (6) is provided between the left retainer (4) and the right retainer (5). One end of the positioning pin (6) passes through the first through hole, and the other end of the positioning pin (6) passes through the second through hole.

6. A lathe spindle bearing as described in claim 1, characterized in that, The left storage groove is attached to the side wall of the outer ring (1), and there is a first gap between the left storage groove and the side wall of the inner ring (2). The right sealing groove is attached to the side wall of the outer ring (1), and there is a second gap between the right sealing groove and the side wall of the inner ring (2).

7. A lathe spindle bearing as described in claim 1, characterized in that, The locking pin (9) includes a rod body, a head, and a tail end, and the left sealing cover (7) is provided with an operating groove (701) at the position corresponding to the rod body.

8. A lathe spindle bearing as described in claim 1, characterized in that, The locking pins (9) are provided in multiples, and the multiple locking pins (9) are distributed in a circumferential array around the center line of the left sealing cover (7).

9. A lathe spindle bearing as described in claim 8, characterized in that, A retaining ring is provided at the left sealing cover (7), and a retaining groove that cooperates with the retaining ring is provided inside the right sealing cover (8).

10. A lathe spindle bearing as described in claim 1, characterized in that, The sealing unit includes a first sealing component (11) and a second sealing component (12). Both the first sealing component (11) and the second sealing component (12) use sealing rings. The diameter of the first sealing component (11) is larger than the diameter of the second sealing component (12).

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