Joint device and method of producing its housing

A method of producing a housing of a joint device to be assembled from said housing, a stud having a stud portion, and a bearing seat,

• said housing including:
• a body portion having a tubular shape and provided with an opening and an inner chamber, said opening adapted to permit the stud portion of said stud to be inserted therethrough, and said inner chamber formed as an integral, contiguous body with the opening and adapted to contain a large diameter portion provided at said stud portion in the state where said bearing seat is disposed between the large diameter portion and the inner surface of the inner chamber, and
• an arm portion that has a tubular shape, provided with an axial hole formed therein, and projecting from a cylindrical surface of the body portion as an integral body with the body portion so that an axis of the arm portion extends in such a direction as to intersect an axis of the body portion, wherein the process of producing said housing includes:
• a first stage of the process, which calls for applying pressure in a given direction to a columnar working material so as to simultaneously forge an intermediate formed body comprised of a generally spherical head portion and said tubular arm portion having the axial hole, said tubular arm portion projecting contiguously from said head portion and said axis of said tubular arm portion extending in the direction in which the pressure is applied, and
• a second stage of the process which calls for forging said body portion by applying pressure in such a direction as to intersect the axis of said arm portion to the head portion of said intermediate formed body.