Spinning machine with hydraulic servo and electric servo

摘要

A spinning apparatus for plastically processing a material located between a mandrel member and a center member using a pair of roller members, wherein the saddle member connected to each of the roller members to adjust the displacement of the roller member comprises: a hydraulic servo unit; Provided is a spinning apparatus having an electric servo unit and a hydraulic servo and an electric servo, characterized in that the displacement of the roller member is controlled through parallel control of the hydraulic servo unit and the electric servo unit.