JPS6479604A - Coordination method in three-dimensional measurement of wire material - Google Patents

Abstract

PURPOSE:To realize the coordination method in the three-dimensional measurement of a wire material capable of performing accurate measurement without mistaking coordination, by irradiating the wire material with reference slit beam and multislit beam in a time sharing manner and catching the scenes thereof by one camera. CONSTITUTION:A three-dimensional coordinating calculation part consists of a three- dimensional position calculating part, and evaluation value calculating part, the min. value detecting part and the optimum route determining part, and a CPU is connected to the whole apparatus to perform the control or operation of said parts. One wire material shown by a drawing (a) is processed by the procedures 1-4 shown by a drawing (c) to extract multislit beam photographed images shown by a drawing (b). By this method, the multislit beam photographed images are temporarily coordinated to a multislit beam front at first in the three-dimensional coordinating calculation part due to the control of the CPU and the three- dimensional position of a multislit beam projecting point is calculated next. Then, the evaluation value between a reference slit beam projecting point and the multislit beam projecting point is calculated on the basis of said reference point and the coordination of the multislit beam projecting point where said value becomes min. and the multislit beam front is determined to calculate the real three-dimensional position of the wire material.