This machine is mainly used to crimp the composite insulator fittings and insulating rods into one piece, through the uniform contraction and deformation of the fittings, make the insulating rods outer circle trace elastic deformation, so that the fittings and rods between the friction produced by the interference friction, so as to make it withstand the large tonnage of tensile load and torsion load, instead of the traditional gluing and pinning riveting process, improve the production efficiency and stability of the product use. In addition, the product is also widely used in lightning arrester and disconnecting switch products.