Inner and outer diameter measuring device for thin-wall bearing ring

Abstract

The invention discloses an inner and outer diameter measuring device for a thin-wall bearing ring. The device comprises a measuring assembly with two displacement sensors and a calibration assembly for relatively locating the displacement sensors and a thin-wall bearing. A relative measurement method is adopted for measurement; namely, the position of each displacement sensor is calibrated in advance through an inner diameter ring gauge or an outer diameter ring gauge. Then, the thin-wall bearing ring is arranged at the position the same as the position where the ring gauge is calibrated; a motor drives the displacement sensors to rotate, so that the difference between the thin-wall bearing ring and the nominal size can be measured. Therefore, the inner and outer diameters of the thin-wallbearing ring can be accurately measured. Calibration of the relative positions of the thin-wall bearing and the displacement sensors in relative measurement is realized in a simple and effective manner. Human adverse factors are eliminated; deformation of the thin-wall bearing ring in the measuring process is reduced greatly, measuring efficiency and accuracy are improved substantially, the innerdiameter and the outer diameter of a thin-wall bearing are measured; and the device can be conveniently popularized and applied.

Description

technical field [0001] The invention relates to the field of measuring thin-walled bearings, in particular to an inner and outer diameter measuring device for thin-walled bearing rings. Background technique [0002] 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. Since the wall thickness of the thin-walled bearing ring is very thin, the ring is easily deformed, and the precision requirements are high, it is difficult to guarantee the machining accuracy of the bearing, so the measurement of the relevant parameters of the thin-walled bearing is particularly important. The inner and outer diameters of thin-walled bearings are important parameters for judging whether the thin-walled bearings are qualified or not, and affect the installation accuracy and service life of thin-walled bearings. The inner and outer rings of the bearing will...

AI Technical Summary

Problems solved by technology

The inner and outer rings of the bearing will inevitably produce a certain amount of deformation during processing, and the wall thickness of the thin-walled bearing ring is thinner than that of ordinary bearings, so the deformation of the thin-walled bearing ring during processing is relatively large. Accuracy is difficult to guarantee

The commonly used measurement method now is to use a torsion spring meter to measure the thin-walled bearing ring. During the measurement process, the measurer manually rotates the bearing ring and performs the measurement in real time. After the ring rotates at a certain angle, it measures and records a measurement value. During the entire measurement Due to human factors, the ring of the thin-walled bearing will be greatly deformed, and the measuring force of the torsion spring meter is relatively large, so the measurement results of the thin-walled bearing have large errors, and it is difficult to accurately measure the machining accuracy of the bearing ring. Some non-contact measurement methods are difficult to be popularized in the processing site or general measurement center due to the harsh use environment requirements and high use cost. Therefore, there is currently a lack of efficient and accurate measurement of the inner and outer diameters of thin-walled bearing rings. method of measurement

Images