Device for detecting tool shape and method for detecting tool shape capable of measuring the shape of a tool whose shape is unknown and detecting abnormality in the tool shape

• Main Author: MUROFUSHI, YU
• Format: Patent
• Language: Chinese; English
• Published: 01.01.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; GYROSCOPIC INSTRUMENTS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

A device for detecting the shape of a tool provided on a main shaft of a machine tool includes: a camera for photographing the shape; a specific vector acquisition part for calculating specific vectors respectively at a plurality of points on the edge of the tool photographed by the camera; a specific vector comparison part for comparing a first plurality of specific vectors acquired by the specific vector acquisition part at a first time with a second plurality of specific vectors acquired at a second time; and a tool shape determination part, based upon the result compared by the specific vector comparison part, for performing a determination on the shape change of the tool when the value of the first plurality of specific vectors and the value of the second plurality of specific vectors are different from a predetermined threshold value. The specific vector is a normal vector, a tangent vector, or a specific tilt vector tilted at a certain angle with respect to the normal vector.