Outer diameter measuring device and method for thin-wall bearing ring

Abstract

The invention discloses an outer diameter measuring device and method for a thin-wall bearing ring. The device comprises a supporting frame, a workbench arranged on the supporting frame, a positioningmechanism arranged on the workbench, a measuring mechanism and a reverse abutting mechanism. The workbench is provided with a measuring center, and the positioning mechanism comprises a Y-axis positioning mechanism and an X-axis positioning mechanism which are arranged on the workbench; the measuring mechanism comprises a torsion spring comparator arranged on the workbench in a sliding mode and ameasuring adjusting mechanism used for adjusting the torsion spring comparator to move on the workbench in the Y-axis direction. The reverse abutting mechanism comprises a reverse abutting rod arranged between a Y-axis positioning rod and a measuring head of the torsional spring comparator and a reverse abutting adjusting mechanism used for adjusting the reverse abutting rod to move along a Y-axis guide groove. According to the device, when the torsional spring comparator is used for measuring the bearing ring, force measurement errors and eccentric errors of the thin-wall bearing ring in themeasurement process can be reduced, and therefore the outer diameter measurement precision of the thin-wall bearing ring is improved.

Description

technical field [0001] The invention relates to the technical field of measuring the outer diameter of a bearing ring, in particular to a device and method for measuring the outer diameter of a thin-walled bearing ring. Background technique [0002] Bearings are an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Thin-walled bearings are the thinnest in the bearing size series, with extremely light weight, and are widely used in aerospace, radar, precision robot joints, and precision medical equipment. In the field of industrial robots and other fields, the bearing capacity of the joints of industrial robots is often relatively large, so more rolling elements are required, and more rolling elements will result in a longer circumference, and because the space at the joints of industrial robots is often limited, so bearing sl...

AI Technical Summary

Problems solved by technology

[0004] 1. The measuring head of the torsion spring comparator needs to apply a certain pressure to be in contact with the measured surface (or line, point) to perform the measurement. The applied pressure is called the measuring force, and the measuring force can be as high as 1-3N. Thin-walled bearing sleeves Under the action of the measurement force, the rings are squeezed against each other, which will cause contact deformation errors of the thin-walled bearing rings, resulting in force measurement errors

[0005] 2. When the existing caliper is positioned on the thin-walled bearing ring, it uses an inclined track to adjust the positioning rod. When adjusting, it is easy to cause upward or downward, resulting in the point that the outer wall of the outermost side of the bearing ring cannot be pointed. , so that the measuring head of the torsion spring comparator does not point to the center of the bearing ring, resulting in eccentricity error

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