Full complement ball column combination bearing and assembling method thereof

Abstract

The invention relates to the technical field of combination bearings, in particular to a full complement ball column combination bearing and an assembling method thereof, and the full complement ball column combination bearing comprises an outer ring, an inner ring, a first row of rolling bodies, a second row of rolling bodies, steel balls, a first flange and a second flange; an outer ring step surface is arranged at the tail end of the outer wall of the outer ring, and a ball mounting hole is formed in the outer ring; an inner ring step face is arranged at the tail end of the outer wall of the inner ring, and the inner ring and the outer ring are combined in a crossed mode. The first row of rolling bodies are arranged between the outer ring and the inner ring; and the second row of rolling bodies are arranged between the outer ring and the inner ring. The assembly process of the bearing can be reasonably arranged, and the problems of how to assemble a rolling body part without a retainer, a mounting method of a spring washer and a rotating ring, how to tighten a bolt after a steel ball is mounted and how to enable the end face of a screw to be tangent to the bottom of a raceway and the like are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of combined bearing technology, specifically to full complement ball-and-stud combined bearings and their assembly methods. Background Technology

[0002] In existing technologies, full complement ball-and-spindle bearings lack cages to separate the rolling elements (rollers or balls). The rolling elements are in direct contact, rubbing and sliding against each other. This leads to significant frictional heat and wear, especially at high speeds. High frictional resistance results in greater energy consumption. Rapid and high temperature rise easily leads to lubrication failure (oil film rupture, grease loss / coking) and bearing overheating failure (such as burning or seizing). Furthermore, the limiting speed of caged bearings cannot be reached.

[0003] The bearing ring structure of full complement ball-and-roll bearings is unique. During assembly, it is necessary to consider how to assemble the rolling elements without a cage, the installation methods for the spring washers and swivel rings, and how to tighten the bolts after the steel balls are installed to ensure the screw end face is tangent to the bottom of the raceway. Therefore, research on the assembly method for this type of bearing is imperative. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a full complement ball-and-roll combination bearing and its assembly method, which can reasonably arrange the bearing assembly process and effectively solve problems such as how to assemble the rolling elements without a cage, the method of installing spring washers and swivel rings, and how to tighten the bolts after the steel balls are installed to ensure that the end face of the screw is tangent to the bottom of the raceway.

[0005] To achieve the above objectives, the present invention provides a full complement ball-and-roll bearing, comprising an outer ring, an inner ring, a first row of rolling elements, a second row of rolling elements, steel balls, a first flange, and a second flange. The outer ring has a stepped outer ring surface at its tail end and a ball-loading hole. The inner ring has a stepped inner ring surface at its tail end, and the inner ring and outer ring are interlocked. The first row of rolling elements is disposed between the outer ring and the inner ring. The second row of rolling elements is disposed between the outer ring and the inner ring. The steel balls are disposed between the outer ring and the inner ring, with one end of each steel ball having a first row of rolling elements and the other end having a second row of rolling elements. The steel balls are loaded into the bearing through the ball-loading hole. The first flange contacts the stepped outer ring surface, and the second flange contacts the stepped inner ring surface.

[0006] Furthermore, the outer ring stepped surface is disposed on the outer circumferential surface of the outer ring, close to the end face of the outer ring, and the outer ring stepped surface is used to limit the first flange.

[0007] Furthermore, the inner ring stepped surface is disposed on the outer circumferential surface of the inner ring, close to the end face of the inner ring, and the inner ring stepped surface is used to limit the second flange.

[0008] Furthermore, the inner wall of the outer ring is provided with two rows of cylindrical raceways, steel ball raceways, and three sealing grooves.

[0009] Furthermore, two rotating rings are provided between the inner wall end of the outer ring and the outer wall end of the inner ring; a rotating ring is provided between the inner wall end of the outer ring and the outer wall end of the inner ring, and the rotating ring is placed in the sealing groove to seal the bearing cavity.

[0010] Furthermore, the steel ball raceway is a double-row raceway, the steel balls are in double rows, one row of steel balls is placed in one row of the steel ball raceway, and the ball loading hole is correspondingly arranged with the steel ball raceway.

[0011] Furthermore, it also includes bolts operably associated with the ball-filling hole, the bolts being used to seal the ball-filling hole and limit the movement of the first flange and the second flange.

[0012] Furthermore, the bolt is fitted with the outer ring via a sealing washer, and a spring washer is provided between the head of the bolt and the sealing washer.

[0013] Furthermore, both the first and second rows of rolling elements are cylindrical rollers.

[0014] The assembly method of the full complement ball-and-spindle bearing includes the following steps: S100. Place the rotating ring into the sealing groove; S200, place the outer ring with the tail end facing down on a horizontal platform; S300. Insert the first flange and the second flange downwards from the head end of the outer ring onto the outside of the outer ring, so that the first flange contacts the stepped surface of the outer ring, and the second flange contacts the first flange. S400: Apply grease to the outer surfaces of the first and second rows of rolling elements to secure them within the cylindrical raceway. S500: Press the beginning of the inner ring downwards into the outer ring from the beginning of the outer ring; S600, clean the raceway grease; S700: Load the steel balls into the steel ball raceway sequentially through the loading holes; After the S800 steel ball is installed, move the second flange to contact the inner ring step surface; S900. Insert the sealing gasket and spring washer into the ball filling hole, and plug the ball filling hole with bolts.

[0015] The beneficial effects of this invention are as follows: The full complement ball-and-roll composite bearing of this application focuses on radial load capacity, structural compactness, and tolerance to harsh working conditions (heavy load, impact, vibration). Essentially, it sacrifices the limiting speed and increases frictional heat generation in exchange for the ability to withstand extreme loads at low or medium speeds and the maximum load-bearing efficiency within a limited space. It allows for a rational arrangement of the bearing assembly process and effectively solves problems such as how to assemble the rolling elements without a cage, the method of installing spring washers and swivel rings, and how to tighten the bolts after the steel balls are installed to ensure the screw end face is tangent to the bottom of the raceway. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of step S100 of the present invention; Figure 2 This is a schematic diagram of step S300 of the present invention; Figure 3 This is a schematic diagram of step S400 of the present invention; Figure 4 This is a schematic diagram of step S500 of the present invention; Figure 5 This is a schematic diagram of step S900 of the present invention; In the diagram: 100, outer ring; 110, outer ring stepped surface; 120, ball loading hole; 130, cylindrical raceway; 140, steel ball raceway; 150, sealing groove. 200. Inner ring; 210. Inner ring stepped surface. 300. The first column of rolling elements, 400. Second column of rolling elements, 500, steel ball, 600, First flange, 700, Second flange, 800, Rotating ring, 900, Bolt 900; 910, Sealing Washer; 920, Spring Washer. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-5As shown, a full complement ball-and-roll bearing according to an embodiment of the present invention includes an outer ring 100, an inner ring 200, a first row of rolling elements 300, a second row of rolling elements 400, steel balls 500, a first flange 600, and a second flange 700; the outer ring 100 has an outer ring stepped surface 110 at its tail end and a ball-loading hole 120; the inner ring 200 has an inner ring stepped surface 210 at its tail end, and the inner and outer rings are interleaved; the first row of rolling elements 300... The first row of rolling elements 300 is positioned between the outer ring and the inner ring; the second row of rolling elements 400 is positioned between the outer ring 100 and the inner ring 200; the steel ball is positioned between the outer ring 100 and the inner ring 200, with the first row of rolling elements 300 at one end of the steel ball 500 and the second row of rolling elements 400 at the other end, and the steel ball is loaded into the bearing through the ball loading hole 120; the first flange 600 is in contact with the outer ring stepped surface 110; the second flange 700 is in contact with the inner ring stepped surface 210.

[0019] In one embodiment, the outer ring stepped surface 110 is disposed on the outer circumferential surface of the outer ring, close to the end face of the outer ring 100, and the outer ring stepped surface 110 is used to limit the first flange 600.

[0020] In one embodiment, the inner ring stepped surface 210 is disposed on the outer circumferential surface of the inner ring, close to the end face of the inner ring 200, and the inner ring stepped surface 210 is used to limit the second flange 700.

[0021] In one embodiment, the inner wall of the outer ring 100 is provided with two rows of cylindrical raceways 130, steel ball raceways 140 and three sealing grooves 150.

[0022] Furthermore, two rotating rings 800 are provided between the inner end of the outer ring 100 and the outer end of the inner ring 200; a rotating ring 800 is provided between the inner end of the outer ring 100 and the outer end of the inner ring 200, and the rotating ring 800 is placed in the sealing groove 150 to seal the bearing cavity.

[0023] Furthermore, the steel ball raceway 140 is a double-row raceway, and the steel balls are arranged in double rows, with one row of steel balls placed inside the steel ball raceway 140, and the ball loading hole 120 is correspondingly set to the steel ball raceway 140.

[0024] In one embodiment, a bolt 900 is also included, which is operatively associated with the ball-filling hole 120 and is used to seal the ball-filling hole 120 and limit the first flange 600 and the second flange 700.

[0025] Furthermore, the bolt 900 is engaged with the outer ring via a sealing washer 910, and a spring washer 920 is provided between the head of the bolt 900 and the sealing washer 910.

[0026] In one embodiment, both the first row of rolling elements 300 and the second row of rolling elements 400 are cylindrical rollers.

[0027] The assembly method of the full complement ball-and-spindle bearing includes the following steps: S100, Place the rotating ring 800 into the sealing groove 150; S200, place the outer ring 100 with the tail end facing down on a horizontal platform; S300, Insert the first flange 600 and the second flange 700 downwards from the head end of the outer ring 100, so that the first flange 600 contacts the outer ring step surface 110, and the second flange 700 contacts the first flange 600. S400: Apply grease to the outer surfaces of the first row of rolling elements 300 and the second row of rolling elements 400 so that they can be fixed in the cylindrical raceway 130. S500, Press the head end of the inner ring 200 downwards into the outer ring from the head end of the outer ring; S600, clean the raceway grease; S700: Steel balls are sequentially loaded into the steel ball raceway 140 through the ball loading hole 120; After S800 and steel ball 500 are installed, move the second flange 700 to contact the inner ring step surface 210; S900. Insert the sealing washer 910 and the spring washer 920 into the ball filling hole 120, and plug the ball filling hole 120 with the bolt 900.

[0028] The above-mentioned assembly method for a full complement ball bearing is as follows: First, clean the outer ring, inner ring, steel balls, rolling elements, flange, bolts 900, sealing washers 910, spring washers 920, and rotating rings 800 and set them aside.

[0029] 1. Place the rotating ring 800 in water and heat it to 80-100℃. After it softens slightly, take it out and quickly place it in the sealing groove 150. Use a special tool to make it stable in the groove.

[0030] 2. Place the outer ring of the 800 rotating ring face down on the platform, and place the flange face down on the outer diameter step surface of the outer ring.

[0031] 3. Apply as little visible grease as possible to the outer diameter of the rolling element, just enough to make the surface of the rolling element slightly sticky. This will help the rollers to be placed on the raceway in sequence and to stay in place without falling off.

[0032] 4. Press the inner ring 200 into the outer component. During the pressing process, the end face of the inner ring must be kept parallel to the platform.

[0033] 5. Cleaning the roller grease: The cleaning process is as follows: First cleaning (rotate for 5 minutes) → Second cleaning (rotate for 5 minutes) → Third cleaning (rotate for 3 minutes) → Soak for 24 hours → Pour out the cleaning oil → Air dry for 48 hours.

[0034] 6. Insert the steel balls one by one from the ball loading port. Move the outer ring second flange 700 to the inner ring inner and outer diameter step surface. Insert the sealing gasket 910 and wave spring washer 920 in sequence. Tighten the hexagonal head ball-plugging bolt 900. Adjust the torque wrench to ensure that the torque value is consistent with the torque value during the final grinding of the raceway, ensuring that the screw end face is tangent to the bottom of the outer ring raceway. Before the final grinding of the raceway, tightening the hexagonal head ball-plugging bolt 900 means that the bottom of the ball-plugging bolt 900 is ground along with the raceway. Its bottom and the raceway become a whole and are considered part of the raceway, participating in the grinding. Record the torque value at this time. When tightening the bolt 900 again after assembly, the consistent torque value ensures that the bottom of the hexagonal head ball-plugging bolt 900 is in the same position as during grinding, i.e., tangent to the bottom of the raceway.

[0035] It should be noted that the cleaning process uses gasoline; the "rotation" in the cleaning process is as follows: if the inner ring end face is in contact with the platform, then rotate the outer ring; otherwise, rotate the inner ring.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A full complement spherical cylindrical combination bearing, characterized by: Comprising An outer ring, an outer wall tail end is provided with an outer ring step surface, the outer ring is provided with a ball hole; An inner ring, an outer wall tail end is provided with an inner ring step surface, the inner ring is crossed with the outer ring combination; The first column of rolling bodies is arranged between the outer ring and the inner ring; The second column of rolling bodies is arranged between the outer ring and the inner ring; The steel ball is arranged between the outer ring and the inner ring, one end of the steel ball is provided with the first column of rolling bodies, the other end is provided with the second column of rolling bodies, the steel ball is loaded into the bearing through the ball hole; The first flange is in contact with the outer ring step surface; The second flange is in contact with the inner ring step surface.

2. The full complement cylindrical combination bearing of claim 1, wherein: The outer ring step surface is arranged on the outer circumferential surface of the outer ring, close to the end face of the outer ring, and the outer ring step surface is used for limiting the first flange.

3. The full complement cylindrical combination bearing of claim 1, wherein: The inner ring step surface is arranged on the outer circumferential surface of the inner ring, close to the end face of the inner ring, and the inner ring step surface is used for limiting the second flange.

4. The full complement cylindrical composite bearing of claim 1, wherein: The inner wall of the outer ring is provided with two columns of cylindrical raceways, a steel ball raceway and three sealing grooves.

5. The full complement cylindrical composite bearing of claim 4, wherein: The inner wall tail end of the outer ring and the outer wall head end of the inner ring are provided with two rotating rings; The inner wall head end of the outer ring and the outer wall tail end of the inner ring are provided with a rotating ring, and the rotating ring is arranged in the sealing groove and used for sealing the inner cavity of the bearing.

6. The full complement cylindrical composite bearing of claim 4, wherein: The steel ball raceway is a double row raceway, the steel ball is a double row, one row of the steel ball is arranged in one row of the steel ball raceway, and the ball hole is correspondingly arranged with the steel ball raceway.

7. The full complement cylindrical composite bearing of claim 1, wherein: It also includes a bolt, the bolt is operatively associated with the ball hole, and the bolt is used to block the ball hole and limit the first flange and the second flange.

8. The full complement cylindrical combination bearing of claim 7, wherein: The bolt is matched with the outer ring through a sealing washer, and a spring washer is arranged between the head of the bolt and the sealing washer.

9. The full complement cylindrical combination bearing of claim 1, wherein: The first column of rolling bodies and the second column of rolling bodies are all cylindrical rollers.

10. A method of assembling a full complement spherical cylinder combination bearing according to any one of claims 1 to 9, characterized in that: The steps include S100, the rotating ring is placed in the sealing groove; S200, the tail end of the outer ring is placed downward on the water platform surface; S300, the first flange and the second flange are sleeved into the outer ring from the head end of the outer ring, so that the first flange is in contact with the outer ring step surface, and the second flange is in contact with the first flange; S400, the first column of rolling bodies and the second column of rolling bodies are smeared with oil on the outer surface, so that they can be fixed in the cylindrical raceway; S500, the head end of the inner ring is pressed into the outer ring from the head end of the outer ring; S600, clean the raceway oil; S700, the steel ball is loaded into the steel ball raceway through the ball hole in sequence; S800, after the steel ball is installed, the second flange is moved to be in contact with the inner ring step surface; S900, the sealing washer and the spring washer are loaded into the ball hole, and the ball hole is blocked by the bolt.

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