Deformation analyzer of barrel body

Abstract

An apparatus for measuring distortion of a cylindrical body includes: a stationary straight rail provided on a flat surface; a cylindrical-body transfer mechanism for rolling the cylindrical body such that a peripheral surface of one end of the cylindrical body remains in contact with the stationary straight rail; a reference pole disposed at a position separated a predetermined distance from the cylindrical body in a direction perpendicular to the rolling direction of the cylindrical body; a laser scan micrometer capable of simultaneously scanning the top end of the cylindrical body and the reference pole by means of laser beam projected toward the rolling direction to thereby measure a distance between the cylindrical body and the reference pole; and a control section for processing measurement data so as to obtain radial distortion of the cylindrical body.

Description

technical field [0001] The present invention relates to a deformation amount measuring device of a cylindrical body suitable for use when measuring the radial deformation strain amount of a cylindrical body such as an inner ring and an outer ring of a bearing. Background technique [0002] Generally, when there is deformation in the radial direction of the inner ring Ci and the outer ring Co of the ball bearing M as shown in FIG. Vibration in the axial direction and the like cannot provide smooth and stable rotational performance. Therefore, it is required to reduce the deformation of the inner ring Ci and outer ring Co as much as possible. That is, when the position where the lower end surface Cid of the inner ring Ci is fixed is rotated once, the radial deformation amount Ed of the upper end surface Ciu of the inner ring Ci is ideally zero, but in reality there is deformation, and it is required to make the deformation The quantity Ed is within specified tolerances. [0...

AI Technical Summary

Problems solved by technology

[0005] First, with mechanical contact, especially in cylindrical bodies C such as small inner rings Ci with an outer diameter of several mm or less, measurement errors become large, and reproducible, high-precision measurements cannot be performed.

[0006] Second, since the main work has to be done manually by the operator, the measurement is time-consuming and troublesome, and it cannot be measured with high stability and reliability.

Images