MANDREL FOR ROTATIONAL EXTRUSION

FIELD: technological processes. ^ SUBSTANCE: adapter mandrel has mounting surfaces on the end that is connected to spindle of spinning lathe, and on the opposite end-basic surface that is coaxial to them. On adapter mandrel pressure mandrel is installed with working section and basic surface reciprocal to basic surface of adapter mandrel. Basic surfaces of adapter and pressure mandrels are arranged as conical with single angle of cone that provides their gapless connection in the whole area of contact after mandrels contraction in axial direction. At that contact is carried out along the whole length of pressure mandrel or along its edges with formation of internal cavity with adapter mandrel in its middle part. ^ EFFECT: higher accuracy of mutual location of working section and its mounting surfaces for connection with spinning lathe spindle. ^ 3 cl, 2 dwg