SU1716303A1 - Method of checking balls - Google Patents

Abstract

This invention relates to mechanical engineering, in particular to methods for controlling balls. The aim of the invention is to increase the productivity and accuracy of measurement by continuously controlling the ball along different paths and reducing friction between the rotating support and the ball. To achieve the goal, before installing the ball in the form of truncated cones, one another is coaxially positioned, the second support is mounted rotatably about its axis, the speeds of rotation of the supports are chosen different in size and direction, and the ball is installed between the inner surfaces of both supports. 2 Il.

Description

WITH

WITH

The invention relates to mechanical engineering, in particular to methods of controlling balls, and can be used in the bearing industry for intermediate and final control of balls.

Known methods for controlling balls, according to which a ball is installed between two supports, rotate one support around its axis and measure the diameter of the ball.

The disadvantage of these methods is low productivity.

Closest to the proposed technical entity is the method of controlling balls, according to which the ball is placed between two supports, rotate one support around its axis and measure the diameter of the ball.

However, the prototype method does not provide sufficient performance and

accuracy of measurement, as well as significant friction between the support and the ball, resulting in the ball slipping and rotating unevenly.

The aim of the invention is to increase the productivity and accuracy of measurement by continuously monitoring the ball over various cross sections and reducing the friction between the support and the ball.

The goal is achieved by the method of controlling balls, which includes installing a ball between two supports, rotating one support around its axis and measuring the diameter of the ball, before installing the support ball in the form of truncated cones, are coaxially placed with each other, the second support is installed with the possibility of rotation relative to its axis, the speeds of rotation of the supports are chosen different in size and direction, and the ball

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with about

with

set between the inner surfaces of both supports.

FIG. 1 shows a scheme for implementing a method for controlling balls; in fig. 2 is a view A of FIG. one.

The method is carried out as follows.

Controlled ball 1 is installed simultaneously on two inner surfaces 2 and 3 of a truncated cone with vertex Oi and a base O and a truncated cone with vertex 02 and a base O. The axes OiO and 020 of the truncated cones coincide and are on the common axis I-I. The truncated cones are materialized by plates 4 and 5. The plates 4 and 5 are coaxial and rotatably mounted around a common H axis from the engine and transmission links (not shown) with angular velocities of different magnitude and direction. Ball 1 is resting on the inner surfaces B and 7 of the faceplates 4 and 5, respectively, in contact with them at points B and C located on the surfaces of the NI and Ill-Ill contact. The ball 8 can be in contact with the platform 8, for example, with an irregularity sensor or there may be a tube 9 of the optical part of the device on it, which is absent during visual inspection. The rotation of the ball 1 is carried out due to the forces of its rolling friction with rotating faceplates 4 and 5. The ball 1, located at the lowest point relative to faceplates 4 and 5, is provided with a stable position and sufficient adhesion to the internal surfaces 6 and 7. When recording deviations of the geometry or defects in the ball 1 are supplied to the platform 8, for example, with a stock-jaw sensor. The rotation drive of faceplates 4 and 5 is activated. The plates 4 and 5 rotate in different directions with different angular velocities, for example, having a sinusoidal variable component. The ball 1 rotates in such a way that its trajectories do not repeat. Include a recorder and record the deviations from the correct geometric shape or defects of the ball 1 on a given measurement route, or observe them visually. Over a rev counter or a time counter (not shown), the recording stops. The platform 8 is retracted. Ball 1 is removed and the next ball 1 is installed. The measurement is repeated. Based on measurements

determines fit and useless parts.

Example. Controlled a batch of balls with a diameter of 25.4 mm for defects optically. Balls 1 alternately installed on the inner

surfaces 6 and 7 of faceplates 4 and 5. We adjusted the rev counter, for example, eight turns. The rotation drive of the faceplates 6 and 7 was turned on. The tube 9 of the optical part of the device was brought in and retracted. When observed in tube 9, defects were fixed according to the selected criterion. Based on the measurements, part of the balls 1 in which the defects exceeded the permissible value were screened out.

The proposed method of controlling the balls improves performance and accuracy of measurement.

Claims (1)

Claim Method installing a ball between two supports, rotating one support around its axis and measuring the diameter of the ball in this case, characterized in that, in order to increase productivity and accuracy of measurement by continuously controlling the ball over various sections and reducing friction between the support and the ball, before installing the support ball in the form of truncated cones, one another is coaxially placed, the second support mounted rotatably about its axis, the speeds of rotation of the supports are chosen different in size and direction, and the ball is installed between the inner surfaces of both supports. ish 1 Type A 2