METHOD OF BALL BEARINGS CONTACT ANGLE

FIELD: physics, measurement. ^ SUBSTANCE: invention is related to nondestructive check and may be used for determination of points of ball contact with ball bearing rim and calculation of ball bearing contact angle. Measurements may be performed on assembled ball bearing. Method includes determination of point of ball bearing contact with rim contact surface and estimation of ball bearings contact angle by displacement of contact point from design position. At that contact surface of rim in the field of design point of its contact with ball is radiated with ultrasonic beam, and contact point is determined by minimum value of reflected acoustic signal amplitude. ^ EFFECT: provision of possibility of direct determination of contact points of ball with ball bearing rim and calculation of angle in it, and determination of size and shape of area of contact of ball with rim. ^ 4 cl, 3 dwg