Measurement method for peach-shaped groove bearing outer jacket angle contact point diameter
A technology of bearing housing and measuring method, which is applied in the direction of measuring devices, instruments, etc., to achieve the effect of simple operation
Inactive Publication Date: 2014-05-07
LUOYANG JIAWEI BEARING MFG
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[0004] In order to solve the problems encountered in measuring the diameter of the angular contact point of the outer sleeve of the peach-shaped groove bearing, the present invention provides a measurement method, which can accurately measure the diameter of the angular contact point of the inner sleeve of the peach-shaped groove bearing
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[0009] Selection of curvature balls for measurement: The conventional method of selecting curvature balls for measurement is to first pick out several groove curvature samples that roughly conform to the groove shape, and then carefully select the ball model that best fits the groove shape under the light, that is, the small ball The bottom of the fan groove is opaque (contact) and both sides are transparent. The large ball fan groove is said to be transparent (non-contact) and both sides are opaque. Or a small ball fan to see through the light, the bottom of the groove will be transparent due to non-contact, so no ball fan that fits the groove shape can be found at all, so the conventional method of color scraping cannot be used to select the ball fan as an auxiliary measuring steel ball ; Theoretically speaking, for a set of qualified finished bearings, its pressure angular contact point should coincide with the pressure angular contact point designed on the drawing, that is,...
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The invention discloses a measurement method for a peach-shaped groove bearing outer jacket angle contact point diameter. According to the method, two assembly balls of the peach-shaped groove bearing are selected to serve as balls for aided measurement, the diameter is denoted as d, the semidiameter is denoted as r, and r is half of d; after the peach-shaped groove bearing is assembled, the included angle between the connection line of the assembly ball centers and the two outer jacket angle contact points and the two assembly ball center connection lines is denoted as alpha; and the largest distance between two points of the two assembly balls asymmetrical corresponding to the center of the peach-shaped groove bearing measured by an inner leveling measurement hook on a horizontal length measurement instrument is denoted as K, and thus the diameter of the peach-shaped groove bearing outer jacket angle contact point satisfies the equation D=K-2*(r-r*cosalpha)=K-2r*(1-cosalpha)=K-d*(1-cosalpha). With the measurement method, the diameter of the peach-shaped groove bearing outer jacket angle contact point can be accurately measured, and the operation is simple.
Description
technical field [0001] The invention relates to the technical field of engineering measurement, in particular to a method for measuring the diameter of an angular contact point of an outer shell of a peach-shaped groove bearing. Background technique [0002] In the field of engineering, a special four-point angular contact radial thrust ball bearing is often used. Its groove type is peach-shaped, that is, the outer groove is formed by the intersection of two identical semicircular arcs to form a sharp groove bottom; the inner groove The "peach-shaped groove" which is composed of two identical half-circles and is similar to the outer groove is called peach-shaped groove bearing for short. [0003] The diameter of the angular contact pressure point of the outer shell of the peach-shaped groove bearing is a key dimension required for the design of this bearing, and because of its special groove shape, it cannot be measured by the method of general angular contact bearings. Co...
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Inventor 杨伟殷毓庚
Owner LUOYANG JIAWEI BEARING MFG