Method and device for inspecting rolling elements by means of ultrasound

A method for inspection of rolling elements by means of ultrasound comprising:

• individually taking the rolling elements to an ultrasound measuring device, wherein the rolling elements are of spherical shape;
• arranging the individual rolling elements in a center between two drive rollers of the ultrasound measuring device;
• moving the individual rolling elements in the ultrasound measuring device and subjecting the individual rolling elements to an ultrasound measurement,
• wherein in the moving step, the drive rollers are turned with a same speed and in a same direction about a common axis of rotation, such that the individual rolling elements placed thereupon are also turned about an axis arranged parallel to the common axis of rotation of the drive rollers, and such that a circumferential line of the individual in rolling elements is moved past a stationary ultrasound head,
• wherein after a complete rotation, an opposite running drive of the drive rollers produces a rotation of the individual rolling elements about a vertical axis, and
• wherein during another synchronous rotation of the drive rollers, a different circumferential line in a manner of a circle of longitude is moved past an assigned measuring device;
• and
• classifying the individual rolling elements, depending on a result of the ultrasound measurement the individual rolling elements, as defective or nondefective.