Design method and device of structural parameters of major and minor semi axes of elliptical race ball bearing

Abstract

The invention relates to a design method and a device of structural parameters of major and minor semi axes of an elliptical race ball bearing. The design method comprises the steps of firstly, calculating radial displacement, axial displacement and corner displacement of an inner ring of the bearing; calculating normal contact loads of all contact positions according to the obtained displacements to determine the contact load of a rolling body with the maximum load and the maximum contact stress received by the bearing; drawing a bearing static load curve through adopting the maximum contact stress as the index, and determining a circle radius coefficient t and a design contact angle according to limit load parameters of the bearing; and finally, calculating a major semi-axis and a minor semi-axis of an ellipse according to the obtained design contact angle, the circle radius coefficient and the radius of a steel ball. According to the design method, the major semi-axis and the minor semi-axis of an elliptical race can be quickly and accurately designed through the process, the problem that the selection of the major semi-axis and the minor semi-axis of the bearing elliptical race has no reference is solved, and reference can be provided for judgment of utilization conditions of external loads according to the adopted static load curve design drawing method.

Description

technical field [0001] The invention relates to a design method and device for the structural parameters of the long and short semi-axes of an elliptical raceway ball bearing, belonging to the technical field of slewing bearing design. Background technique [0002] As an important basic component of construction machinery and construction machinery, slewing bearing is an important force transmission element necessary between two mechanical parts that need to perform relative rotary motion and at the same time bear axial force, radial force and overturning moment. Slewing table bearings can be divided into: single-row ball type, three-row column type, cross roller type, double-row eight-point contact ball type, ball-column combination type, etc. according to their structural types. Among them, the ball slewing bearing market occupies the largest proportion, reaching more than 90%, and is widely used in host systems and other fields. With the compact development of various ho...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a design method and device for the structural parameters of the long and short semi-axes of elliptical raceway ball bearings, so as to solve the problem that there is no basis for the selection of long and short semi-axes of elliptical raceway ball bearings

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