Manufacturing method of an inner ring of a metallic ball joint and ball joint so obtained

摘要

The internal bush (6) for a metallic ball joint (2) has an external truncated spherical surface (6B) which engages the internal spherical surface (4B) of an external bush (4). Its internal surface (6A) engages a shaft (8). The manufacturing process consists of making a rough outline from a single holder which has external and internal surfaces identical to the definitive surfaces of the internal bush. A cutout is made in this rough outline to make two C-shaped constituent components (10) of the bush. In use the opposite faces (12A,12B) of the two components are separated by free volumes (V,V')