Laminated iron core and VR type rotary transformer

The utility model provides a laminated iron core and a VR type rotary transformer. With the technical schemes of the utility model adopted, when a VR type rotary transformer-used rotor core of which the inner side is provided with a protrusion structure is manufactured, high cost can be avoided, the rotor core with the protrusion can be subjected to rotating staggered lamination. According to a manufacturing method of the rotor core of the VR type rotary transformer, a plurality of components of which the shape is the same with the shape of laminated rotor core sheets (211) are laminated in a rotating staggered manner, so that the rotor core can be obtained; four protrusions are formed on the rotor core sheets simultaneously; all protrusions except one are cut off; and rotating staggered lamination of the rotor core sheets is performed.