METHOD FOR ATTACHING BURNER FOR DEPOSITION OF SOOT FOR OPTICAL FIBER PREFORM

摘要

PROBLEM TO BE SOLVED: To provide a method for attaching a burner by which the time required to attach and adjust a burner for soot deposition is shortened and variation in characteristics of performs before and after an exchange of burners is minimized. SOLUTION: A vertical standard plane 1 is disposed in a prescribed relative position to a standard soot depositing position on a soot pulling and rotating shaft coincident with a vertical line and burner attaching metal fittings 21 are fixed in a prescribed position no the standard plane 1. Preferably the method has a mechanism for independently adjusting the degree of verticality and three- dimensional position of the standard plane 1 by attaching a fig plate 2 perpendicular to the standard plane 1 onto the plane 1 and making a marker point M on the jig plate 2 coincide with the tip of a plumb bob 5 suspended in such a way that the tip coincides with a prescribed position on the soot pulling and rotating shaft, and preferably is used a template 27 positioned on the standard plane 1 so as to determine the fixing position of the burner attaching metal fittings 20.