초록 ▼

A method of spin forming, comprising the steps of: providing a tool having a first plurality of forming rollers spaced at a second plurality of distances from a spin axis; spinning around the spin axis at least one member of a set comprising (i) a work piece and (ii) the tool; and engaging the tool

A method of spin forming, comprising the steps of: providing a tool having a first plurality of forming rollers spaced at a second plurality of distances from a spin axis; spinning around the spin axis at least one member of a set comprising (i) a work piece and (ii) the tool; and engaging the tool and a first end of the work piece. The method allows increased diameter reductions of a free end of a work piece in a single forming operation without collapse of the end of the work piece.

대표청구항 ▼

[ We claim:] [1.] A method of spin forming, comprising the steps of:providing a first tool having a first plurality of forming rollers, wherein the first plurality of forming rollers includes at least first and second forming rollers, wherein the first forming roller is at a first radial distance fr

[ We claim:] [1.] A method of spin forming, comprising the steps of:providing a first tool having a first plurality of forming rollers, wherein the first plurality of forming rollers includes at least first and second forming rollers, wherein the first forming roller is at a first radial distance from a spin axis greater than a second radial distance of the second forming roller from the spin axis;spinning around the spin axis at least one member of a set comprising (i) a work piece having a cylindrical shape and an inner wall with a first diameter and (ii) the first tool; andimparting an axial motion on at least one member of the set to engage the first tool and a first end of the work piece to sequentially engage the first forming roller and then the second forming roller to the work piece, wherein the inner wall of the first end is formed down to a second diameter by the first forming roller, wherein the second diameter is less than the first diameter, and wherein the inner wall of the first end is formed down to a third diameter by the second forming roller, wherein the third diameter is less than the second diameter.