抄録
An automatic sorting machine of ball bearing has been developed. This machine is designed to measure the radial clearance of ball bearings and able to classify them into five divisions at a rate of 360 pieces per hour. It consists of such three parts as mechanical measuring device, electronic controlling device and sorting boxes. The mechanical measuring device has two feelers, one being fixed to the coil of a differential transformer and the other to its core. The clearance of ball bearing is detected as relative displacement of two feelers, and the Schmitt circuit is used as electronic classifier.
