Method for detecting internal diameter size of extra-large bearing ferrule seam allowance

Abstract

The invention relates to a method for detecting the internal diameter size of an extra-large bearing ferrule seam allowance, which comprises the following steps of: manufacturing a positioning sleeve (4), fixing the positioning sleeve on a measuring platform (3) through a bolt (6) and a pressing plate (5) by using the bottom plane of the positioning sleeve as a positioning surface, and arranging a ferrule (1) by using the external diameter of a convex circular ring at the upper end of the positioning sleeve as a measuring datum; fixing a dial gauge frame (2) on one side of the measuring platform, and ensuring that a dial gauge contact carried on the dial gauge frame is aligned with a position of the external diameter end face of the ferrule corresponding to half depth of the seam allowance; and applying two applied forces F in different directions to the position of the external diameter end face of the ferrule corresponding to the half depth of the seam allowance on the other side ofthe measuring platform, and recording two measured values by using a dial gauge, wherein the sum of the average value of the two measured values and the nominal external diameter of the convex circular ring is the actually measured internal diameter size of the ferrule seam allowance. The method is established on a detection platform, the detection means is the same, the detection method is practical and quick, and the detection result is accurate, fair and reliable and has small errors.

Description

technical field [0001] The invention belongs to the technical field of bearing detection, and in particular relates to a detection method for the inner diameter of the spigot opening of an extra-large bearing ring. Background technique [0002] Bearing rings with an outer diameter of 440mm or more are called extra-large bearings. The structure of some rings has a groove stop on its radial end surface. The depth of the groove stop is usually about 2 to 3mm. The inner diameter of the spigot is D, because the dimensional accuracy of the groove spigot is required to be high and has important positioning features, so the inner diameter D of the groove spigot must be tested before assembly. [0003] The detection of the inner diameter D of the groove spigot cannot be detected due to the shallow depth of the spigot and the interference between the clamping rod of the pipe ruler and the end face of the spigot. At present, the accuracy of caliper detection is very low, which can bar...

AI Technical Summary

Problems solved by technology

[0003] The detection of the inner diameter D of the groove spigot cannot be detected due to the shallow depth of the spigot and the interference between the clamping rod of the pipe ruler and the end face of the spigot

Currently using caliper detection, the accuracy is very low, which can barely meet the requirements for some conventional low-end products, but cannot meet the requirements for some high-precision products

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