Tangential thread rolling head comprises a bushing having a fine thread section on its periphery that interacts with an internal thread section in a receiving bore for a pinion and the bushing

摘要

Tangential thread rolling head comprises two fork-shaped rolling head arms (10) containing thread rollers (14) rotatably mounted on parallel axles (18). The thread rollers laterally engage with a pinion (46) of a gear coupling the two thread rollers. The thread rollers and the pinion have lateral claws(42, 44) so that the claws of the thread rollers can be laterally inserted into the claws of the pinion before mounting on the axle. A bushing (50) arranged on each axle so that it can be axially displaced can be axially fixed against the pinion using fixing elements. The bushing has a fine thread section (52) on its periphery that interacts with an internal thread section (52a) in a receiving bore (48) for the pinion and bushing. Locking elements are provided in the rolling head arms for locking the bushing in a rotational position.