Multiple-prismatic high speed entity ball bearing retainer

Abstract

The invention discloses a multi-prismatic high-speed solid ball bearing retainer. In the retainer, an external radial tangent perpendicular to the center line of each pocket of the retainer is drawn, all intersection points of the external radial tangents are connected to form a multi-prismatic shape and cause the thickness at the tangent intersection point to be thickened, and cause the contact stiffness of the tangent intersection point to be increased, which ensures the overall stiffness thereof; the multi-prismatic structure of the retainer causes the contact between the multi-prismatic structure and a circular bearing ring guide rib to be a two-point contact under the stable contact condition; on the one hand, the two-point contact can obviously enhance supporting stability of the retainer, and improve high-speed running stability of the retainer; on the other hand, the two-point contact reduces contact stress at the contact point of the retainer, and reduces frication and wear of the retainer; meanwhile, a tangential straight edge can seal part of lubricant in a contact state, which is beneficial to improving the lubrication status of the contact point of the multi-prismatic retainer 2; the external radial tangent height h of the multi-prismatic retainer is controlled between 0.1mm and 0.3mm, and the running smoothness of the multi-prismatic retainer is effectively ensured as the h numerical value is very small.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to a polygonal high-speed solid ball bearing cage. Background technique [0002] figure 1 , 2 It is a commonly used cage for angular contact ball bearings at present. It is mainly a circular solid cage with straight pocket holes made of engineering plastics such as bakelite and nylon. This kind of straight pocket circular solid cage has been used for more than 100 years. Basically, all ball bearing solid cages have a circular structure. The advantage of this structure is that it is easy to process and shape, and the cost is low. [0003] However, as the bearing speed becomes higher and higher, the disadvantage of unstable high-speed performance of the cage of this structure becomes more and more obvious. High-speed bearings generally use the outer guide method in which the outer diameter of the cage contacts the rib of the outer ring of the bearing. Since the contact point betwe...

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Problems solved by technology

[0003] However, as the bearing speed becomes higher and higher, the disadvantage of unstable high-speed performance of the cage of this structure becomes more and more obvious.

High-speed bearings generally use the outer guide method in which the outer diameter of the cage contacts the rib of the outer ring of the bearing. Since the contact point between the outer diameter of the circular solid cage and the guide rib of the bearing is a line, under high-speed operating conditions, due to Under the high-speed collision of steel balls, it is difficult for the cage to maintain balance under one point of contact, and it is very prone to unstable phenomena such as cage whirl and howling, which greatly affects the noise and service life of the bearing

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