Environment-friendly bearing of high-speed motorized spindle

Abstract

The utility model discloses a high-speed motorized spindle environment-friendly bearing which comprises a bearing body, the bearing body comprises a bearing outer ring and at least one bearing inner ring, and circumferential grooves are formed in the inner surface of the bearing outer ring and the outer surface of the bearing inner ring. Sealing pieces are arranged on the two sides of the bearing body and fixed to the end face of the bearing body through end covers respectively, a bearing chamber cavity is formed between the sealing pieces, and a retainer is arranged in the bearing chamber cavity and located between the bearing outer ring and the bearing inner ring. And a rolling body is movably arranged in the retainer and is in contact with the circumferential grooves of the bearing outer ring and the bearing inner ring. The sealed bearing chamber cavity is formed by the sealing pieces arranged on the two sides of the bearing body, and the adsorption layers are arranged on the inner sides of the sealing pieces to adsorb grease thrown out by centrifugal force when the bearing works and waste grease generated by long-time use, so that the loss of the bearing is reduced, the service life of the bearing is prolonged, the environmental pollution is reduced, and the service life of the bearing is prolonged. And environmental protection and maintenance-free are realized.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to environmentally friendly bearings for high-speed electric spindles. Background Technology

[0002] Electric spindles have high operating speed, high accuracy, high system rigidity, low heat generation, low noise, and low vibration, which places high demands on the bearings used in their operation.

[0003] Currently, motor spindle bearings are regularly lubricated by adding lubricating oil through an oil cup to extend their service life. However, when the motor spindle drives the bearing to rotate, the movement of the balls will squeeze the lubricating oil between the inner and outer rings, causing the lubricating oil to be squeezed out of the bearing and flow along the bearing wall. It then comes into contact with dust in the air and on the bearing wall to form grease. This not only wastes lubricating oil but also makes cleaning troublesome. Utility Model Content

[0004] To address the aforementioned technical issues, a high-speed electric spindle environmentally friendly bearing is provided.

[0005] To achieve the above objectives, this utility model discloses a high-speed electric spindle environmentally friendly bearing, including a bearing body. The bearing body includes an outer bearing ring and at least one inner bearing ring. Circumferential grooves are provided on the inner surface of the outer bearing ring and the outer surface of the inner bearing ring. Sealing plates are provided on both sides of the bearing body and are respectively fixed to the end face of the bearing body by end caps. A bearing chamber cavity is formed between the sealing plates. A cage is provided in the bearing chamber cavity between the outer bearing ring and the inner bearing ring. Rolling elements are movably installed in the cage and contact the circumferential grooves of the outer and inner bearing rings.

[0006] Furthermore, the end face of the bearing outer ring is provided with a first groove for installing a sealing plate, and an annular first sealing groove is provided in the first groove near the outer surface of the bearing outer ring.

[0007] Furthermore, the inner surface of the bearing outer ring is provided with an inclined surface near the first groove.

[0008] Furthermore, the end face of the bearing inner ring is provided with a second groove for installing a sealing sheet, and an annular second sealing groove is provided in the second groove near the inner surface of the bearing inner ring.

[0009] Furthermore, an adsorption layer is provided on the side of the sealing sheet near the bearing chamber cavity, and a first sealing ring and a second sealing ring are respectively provided on the sealing sheet near the first sealing groove and the second sealing groove.

[0010] Furthermore, the sealing sheet has a fixing part with a recessed structure facing the inner ring of the bearing at its center, and the sealing sheet is in contact with the surfaces of the first groove and the second groove.

[0011] Furthermore, the fixing part is sleeved on the protruding position of the inner ring of the bearing, and the end cover is interference-fitted with the protruding position of the inner ring of the bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a high-speed electric spindle environmentally friendly bearing. A sealed bearing chamber is formed by sealing plates set on both sides of the bearing body. An adsorption layer is set on the inner side of the sealing plate to adsorb the grease that is thrown out by centrifugal force when the bearing is working and the waste grease generated by long-term use, thereby reducing the wear of the bearing, increasing the service life of the bearing, reducing environmental pollution, and achieving environmental protection and maintenance-free operation. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a cross-sectional view of the present invention.

[0015] Figure 2 This is an assembly drawing of the sealing sheet of this utility model.

[0016] Figure 3 This is a schematic diagram of the sealing sheet structure of this utility model.

[0017] Figure 4 This is a cross-sectional view of the sealing sheet of this utility model.

[0018] In the figure: 1 is the outer ring of the bearing; 11 is the first groove; 12 is the first sealing groove; 13 is the inclined surface; 2 is the inner ring of the bearing; 21 is the second groove; 22 is the second sealing groove; 3 is the cage; 4 is the rolling element; 5 is the sealing sheet; 51 is the adsorption layer; 52 is the fixing part; 6 is the end cap; 7 is the first sealing ring; 8 is the second sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] One embodiment of this utility model is as follows: Figure 1As shown, the bearing body includes an outer bearing ring 1 and at least one inner bearing ring 2. Circumferential grooves are provided on the inner surface of the outer bearing ring 1 and the outer surface of the inner bearing ring 2. Sealing plates 5 are provided on both sides of the bearing body and are fixed to the end face of the bearing body by end caps 6. A bearing chamber cavity is formed between the sealing plates 5. The bearing chamber cavity is filled with grease for lubrication. A cage 3 is provided in the bearing chamber cavity between the outer bearing ring 1 and the inner bearing ring 2. Specifically, the cage adopts a high-strength, lightweight fabric-reinforced bakelite cage to reduce the friction between the rolling elements and the cage. Rolling elements 4 are movably installed in the cage 3 and contact the circumferential grooves of the outer bearing ring 1 and the inner bearing ring 2. The open angular contact bearing structure is innovatively transformed into a double-sided sealed angular contact ball bearing structure, achieving high-quality sealing. This changes the lubrication from oil spraying to grease, greatly improving energy saving, oil saving, safety, and the working environment of workers, reducing environmental pollution, and achieving environmentally friendly, maintenance-free operation, as well as high speed and high reliability.

[0021] like Figure 2 As shown, the end face of the bearing outer ring 1 is provided with a first groove 11 for installing the sealing plate 5. The first groove 11 is provided with an annular first sealing groove 12 near the outer surface of the bearing outer ring 1. The end face of the bearing inner ring 2 is provided with a second groove 21 for installing the sealing plate 5. The second groove 21 is provided with an annular second sealing groove 22 near the inner surface of the bearing inner ring 2. Since the first groove and the second groove are not on the same surface, a matching sealing plate structure is designed to meet the sealing installation requirements.

[0022] An inclined surface 13 is provided on the inner surface of the outer ring 1 of the bearing near the first groove 11. When the bearing is working, some grease and waste grease generated over a long period of use are affected by centrifugal force and flow through the inclined surface to the sealing plate.

[0023] like Figure 3 As shown, a mesh adsorption layer 51 is provided on the side of the sealing sheet 5 near the bearing chamber cavity. It is adhered to the inner side of the sealing sheet by adhesive and is used to adsorb the grease that is thrown out by centrifugal force when the bearing is working and the waste grease generated by long-term use, so as to facilitate subsequent maintenance and replacement. A first sealing ring 7 and a second sealing ring 8 are respectively provided on the sealing sheet 5 near the first sealing groove 12 and the second sealing groove 22. The first sealing ring 7 and the second sealing ring 8 are fixed on the sealing sheet 5 by adhesive or other materials. While ensuring the sealing installation between the sealing sheet and the bearing body, it also ensures that the sealing sheet 5 can be snapped into the sealing groove by the sealing ring, so as to fix the edge of the sealing sheet.

[0024] like Figure 4 As shown, the sealing sheet 5 has a fixing part 52 with a recessed structure facing the inner ring 2 of the bearing at its center. The sealing sheet 5 is in contact with the first groove 11 and the second groove 21, which meet the non-coplanar sealing installation requirements and is also used for end cover positioning installation.

[0025] The fixing part 52 is sleeved on the protruding position of the inner ring 2 of the bearing. The end cover 6 is interference-fitted with the protruding position of the inner ring 2 of the bearing to ensure the installation stability of the sealing sheet and the bearing as a whole. After the end cover is installed, the overall thickness does not exceed the thickness of the outer ring of the bearing, which can meet the combination of multiple paired bearings.

[0026] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0027] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A high-speed electric spindle environmentally friendly bearing, comprising a bearing body, characterized in that, The bearing body includes an outer ring (1) and at least one inner ring (2). The inner surface of the outer ring (1) and the outer surface of the inner ring (2) are provided with circumferential grooves. Both sides of the bearing body are provided with sealing plates (5) and are fixed to the end face of the bearing body by end caps (6). A bearing chamber cavity is formed between the sealing plates (5). A cage (3) is provided in the bearing chamber cavity between the outer ring (1) and the inner ring (2). A rolling element (4) is movably installed in the cage (3) and contacts the circumferential grooves of the outer ring (1) and the inner ring (2).

2. The high-speed electric spindle environmentally friendly bearing according to claim 1, characterized in that, The bearing outer ring (1) has a first groove (11) for installing a sealing plate (5) on its end face. The first groove (11) has an annular first sealing groove (12) near the outer surface of the bearing outer ring (1).

3. The high-speed electric spindle environmentally friendly bearing according to claim 2, characterized in that, An inclined surface (13) is provided on the inner surface of the outer ring (1) of the bearing near the first groove (11).

4. The high-speed electric spindle environmentally friendly bearing according to claim 1, characterized in that, The end face of the bearing inner ring (2) is provided with a second groove (21) for installing the sealing plate (5), and an annular second sealing groove (22) is provided near the inner surface of the bearing inner ring (2).

5. The high-speed electric spindle environmentally friendly bearing according to claim 1, characterized in that, The sealing sheet (5) has an adsorption layer (51) bonded to the side of the bearing chamber cavity. The sealing sheet (5) has a first sealing ring (7) and a second sealing ring (8) respectively near the first sealing groove (12) and the second sealing groove (22).

6. The high-speed electric spindle environmentally friendly bearing according to claim 5, characterized in that, The sealing sheet (5) has a fixing part (52) with a recessed structure facing the inner ring (2) of the bearing at its center, and the sealing sheet (5) is in contact with the first groove (11) and the second groove (21).

7. The high-speed electric spindle environmentally friendly bearing according to claim 6, characterized in that, The fixing part (52) is sleeved on the protruding position of the inner ring (2) of the bearing, and the end cover (6) is interference-fitted with the protruding position of the inner ring (2) of the bearing.

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