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Plane dense ball bearing, preparation method thereof and nutation speed reducer

A dense ball bearing, plane technology, applied in ball bearings, bearing components, shafts and bearings, etc., can solve the problems of raceway fatigue pitting, weak bearing capacity of thrust bearings, excessive ball arrangement, etc., to improve the bearing capacity, The effect of avoiding fatigue pitting and improving service life

Active Publication Date: 2022-03-22
姜虹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention discloses a flat dense ball bearing and a preparation method thereof, which are used to solve the problem that if the existing flat dense ball thrust bearing cage balls are arranged too much, fatigue pitting of the raceway will occur, and if the arrangement is too small, it will cause The problem of weak load capacity of thrust bearings

Method used

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  • Plane dense ball bearing, preparation method thereof and nutation speed reducer
  • Plane dense ball bearing, preparation method thereof and nutation speed reducer
  • Plane dense ball bearing, preparation method thereof and nutation speed reducer

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Embodiment 1

[0045] In this embodiment, a plane dense ball bearing is provided, such as figure 1 with figure 2 As shown, it includes a cage 200 and balls 202; the cage 200 is formed with multiple sets of ball holes 201 provided with balls 202; each set of ball holes 201 forms an elliptical arrangement track along the circumference of the cage 200; multiple sets of ball holes 201 The formed elliptical arrangement tracks have the same elliptical center O, and the major axes of each elliptical arrangement track are on the same straight line; every two adjacent groups of ball holes 201 are staggered along the circumferential direction of the cage 200; the same group of ball holes 201 is symmetrical to the center O of the ellipse.

[0046] Optionally, the cage 200 in this embodiment is a hollow disc structure.

[0047] The plane dense ball bearing in this embodiment uses the plane as the raceway of the ball 202, and the raceway can be formed on the parts carried by the plane dense ball beari...

Embodiment 2

[0057] This embodiment provides a method for preparing a plane dense ball bearing taking Embodiment 1 as an example, such as image 3 Shown, described preparation method comprises:

[0058] S1. Set several sets of winding columns on the mold according to the positions of several groups of ball holes. Each set of winding columns is arranged according to the elliptical arrangement trajectory. The innermost group of winding columns is marked as A1, and the innermost group of winding columns to the outermost one The sets of winding columns are respectively A1, A2...An, n is an integer greater than or equal to 3;

[0059] S2. First, follow the A1-An group of winding columns in a staggered manner from the inside to the outside: take any winding column in the A1 group of winding columns as the winding starting point, and the winding starting point is close to the center O side of the elliptical trajectory. From the winding Starting from the starting point, the fibers are staggered a...

Embodiment 3

[0067] This embodiment provides a nutating speed reducer, including the planar dense ball bearing described in Embodiment 1 as an example.

[0068] Specifically, such as Figure 4-Figure 9 As shown, the nutating reducer includes: a housing 300; two pairs of nutating gear pairs are arranged in the housing 300, each pair of nutating gear pairs is formed by meshing a nutating gear 400 and a non-nutating gear 500, and the non-nutating gear pair The nutating gear 500 is fixedly arranged in the housing 300 or integrally formed with the housing 300, and the number of teeth of the nutating gear 400 in each pair of nutating gear pairs is one more than the number of teeth of the non-nutating gear 500; the output shaft 301 of the reducer rotates Set in the housing 300; two pre-stretched annular elastic diaphragms, each annular elastic diaphragm has an inner ring 101, an outer ring 102 and an annular elastic body connected between the inner ring 101 and the outer ring 102 103, the inner ...

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Abstract

The invention relates to a planar dense ball bearing, a preparation method thereof and a nutation speed reducer, which are used for solving the problems of fatigue pitting corrosion of a raceway due to excessive arrangement of balls of a retainer of an existing planar dense ball thrust bearing and weak bearing capacity of the thrust bearing due to excessive arrangement of the balls. The invention discloses a plane dense ball bearing which comprises a retainer and balls. A plurality of groups of ball holes for arranging the balls are formed in the retainer; each group of ball holes form an elliptical arrangement track in the circumferential direction of the retainer; the ellipse arrangement tracks formed by the multiple groups of ball holes have the same ellipse circle center, and the long axes of the ellipse arrangement tracks are on the same straight line; every two adjacent sets of ball holes are arranged in a staggered mode in the circumferential direction of the retainer. According to the invention, the two adjacent groups of ball holes are arranged in a staggered manner, and the balls in the same group of ball holes are arranged in an elliptical manner, so that the service life of the thrust bearing can be prolonged, premature fatigue pitting corrosion on a raceway of the thrust bearing is avoided, and meanwhile, the bearing capacity of the thrust bearing is also improved.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a plane dense ball bearing, a preparation method thereof, and a nutation reducer. Background technique [0002] Thrust bearings are widely used in various machinery. Although there are many types of thrust bearings, there are very few thrust bearings with compact axial size, uniform thrust distribution, high limit speed, and able to withstand a certain overturning moment. The axial dimension of thrust bearings with raceways is too large, cylindrical roller thrust bearings are not pure rolling, have high friction and heat, and cannot be used in occasions that require high-speed operation. Only flat dense ball thrust bearings can meet the above requirements. [0003] Compared with cylindrical roller thrust bearings, the bearing capacity of flat dense ball thrust bearings is relatively weak. In order to improve the bearing capacity, it is necessary to arrange as many ball partic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/10F16C33/40F16C33/58F16C33/66B29C70/36F16H57/023F16H57/021
CPCF16C19/10F16C33/40F16C33/583F16C33/664B29C70/36F16H57/023F16H57/021F16C19/364F16C19/548F16C19/182F16C33/422F16C33/581F16C33/588F16C33/62F16C27/066
Inventor 王小椿
Owner 姜虹