Method for measuring parameters of conical bearing ring based on three coordinates

Abstract

The invention discloses a method for measuring parameters of a conical bearing ring based on three coordinates. The method comprises the steps of measuring the diameters of the raceways of an inner ring, measuring the diameters of the raceways of an outer ring, measuring the height of a large flange of the inner ring and measuring the middle diameters of the raceways of an outer ring of a double-row conical bearing. The method for measuring the diameters of the raceways of the inner ring comprises the following steps of: fitting a circle on each of the raceway at three height positions of theinner ring to obtain three corresponding circle diameters, and calculating the diameters of the raceways of the inner ring in one-to-one correspondence with the three heights according to the following formula: phi n=phi-2 (r/cos alpha-r)+2htan alpha; according to the raceway diameters phi n1, phi n2 and phi n3 of the inner ring in one-to-one correspondence with the three heights, adding phi n1, phi n2 and phi n3 and dividing the sum of the phi n1, phi n2 and phi n3 by 3 to obtain the raceway diameter phi n of the inner ring. The method for measuring the raceway diameter of the conical bearingring is convenient to operate, good in repeatability, high in measurement precision and capable of truly reflecting accurate parameters of a product contour.

Description

technical field [0001] The invention relates to a method for measuring parameters of a tapered bearing ring based on three coordinates. Background technique [0002] For the measurement of the diameter of the inner and outer raceways of tapered bearings (single row), the existing measurement methods include the inverted cone method, the two-ball method and the four-ball method. Among them, the inverted cone method will have cumulative errors in the measurement process due to reasons such as overturning, and the measurement requirements are harsh and difficult to master; while the two-ball method and the four-ball method use steel ball gauge blocks for comparison, and the measurement results are obtained entirely by hand feeling and estimation. The measurement error is large. The measurement accuracy of the traditional measurement method is low, about ±5μm, and the repeatability cannot be guaranteed. In addition, the traditional measurement method cannot detect the middle d...

AI Technical Summary

Problems solved by technology

Among them, the inverted cone method will have cumulative errors in the measurement process due to reasons such as overturning, and the measurement requirements are harsh and difficult to master; while the two-ball method and the four-ball method use steel ball gauge blocks for comparison, and the measurement results are obtained entirely by hand feeling and estimation. Large measurement error

The traditional measurement method has low measurement accuracy, about ±5μm, and the repeatability cannot be guaranteed

In addition, the traditional measurement method cannot detect the middle diameter of the outer ring raceway of double-row tapered bearings on site.

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