Ball chuck type mandrel jig and ball chuck type mandrel jig set

摘要

To replace a ball of a ball chuck type mandrel with simplicity.A ball chuck type mandrel jig (3) for attaching a ball (13) to a ball attachment hole (12) of a ball chuck type mandrel (1) has a storage portion A casing (4) having a through hole (42) formed in a bottom portion of the casing (41), a lid member (53) for closing the through hole (42), the lid member (53) Is configured to be capable of discharging the ball (13) accommodated in the through hole (42) from the opening on the upper surface side and the opening on the side surface via the ball passage, and the side opening and the inner peripheral surface of the through hole , And the closed position where the side opening is closed and the side opening is lowered to the height position of the ball attachment hole (12) when the jig (3) is at the predetermined installation position And a ball attachment position.(FIG.