Surface measuring apparatus, wire manufacturing apparatus, surface measuring method, and method of manufacturing wire

摘要

Problem to be solved: to provide a technique for improving the sensitivity of the detection sensitivity of the film abnormality with respect to the surface measurement for detecting the film abnormality using the contact member.The surface measuring apparatus comprises a contact member, a surface displacement meter, a noise detecting portion for detecting roll noise which is periodic noise in the displacement amount of the contact member, and a noise reducing portion.The contact member is in contact with the surface of the film of the conductor moving in the predetermined direction of conveyance, and is displaced in accordance with the shape of the surface of the film.The surface displacement meter measures the displacement of the contact member in accordance with the shape of the surface of the film.The noise detector detects the roll noise which is periodic noise in the displacement of the contact member.The noise reduction part reduces the component of the roll noise detected by the noise detecting portion from the amount of displacement of the contact member measured by the surface displacement meter.Diagram