Single piece vehicle wheel manufacturing process

A novel method for manufacturing wheels out of single metal band comprising the step of,

• placing a circular metal band (101) in a mandrel (102) provided at a machining tool for manufacturing the wheel;
• forming the metal band/work piece (101) for making a desired length of rim (201) and a wheel disc (202);
• spinning a nave portion (401) of the work piece (101) for shaping the wheel disc (202);
• wherein the nave spinning of the work piece (101) utilized to fix an inner width of the wheel;
• spinning the work piece (101) for making a gutter (504) and a disc flange portion (502) of the wheel;
• rolling the rim portion of the work piece (101) that is connected to the wheel disc (202) portion, to form the required gutter portion (504) of predetermined shape and thickness;
• spinning the rim portion of the work piece (101) further to form a tire seat and a well area (701);
• wherein the well area (701) has a reduced width compared to the rim portion;
• forming a flange flare (801) by bending the rim portion outwardly;
• wherein the flange portion of the wheel rim is formed by bending the flange flare (801) to a desired shape;
• and
• piercing air hole (1001) for the wheel disc (202), after forming the flange portion (901);
• coining the air hole, after piercing air hole (1001) for the wheel disc (202);
• reducing the length of the rim portion by a shrinking process, after piercing and coining the air hole (1001);
• and
• reaming of bolt holes (503) and chamfering bores at the wheel disk portion of the wheel for attaching the wheel to a wheel axle.