抄録
Noncontact monitoring equipment for detecting tool failures by optical measurement has been developed for applications to machining centers, turning centers, etc. The equipment consists of : (1) An auto-focusing device for an ITV camera to focus on the failed portions of a tool. (2) A four halogen lamp system for contrasting the failed portions against the normal region. (3) An image processing procedure for extracting failed portions from a composite tool image obtained by lighting the tool from three different axes. (4)An accurate calculating method of quantifying the failures.
