Adjustable prewinder assembly for wire insert installation tool

摘要

A prewinder apparatus (11) attached to a drive tool (!"9 to install helical coil inserts includes an adapter (24) attached to the drive tool (12). A rotatable tubular sleeve (26) in the adapter is engaged with the tool drive (12) and has opposed engagement walls of a longitudinal slot (34) extending through a hollow portion. A mandrel (36) has a threaded first end (37) and a pin (35) transversely extending from a second end positioned within the longitudinal slot (34). A stop (29) slides within the adapter member (24) and rotatably receives the sleeve (26). The stop (29) has a plurality of external threads (72). A stop regulator (42) rotatably disposed in the adapter member (24) has internal threads engaged with the stop external threads. The stop (29) is axially displaceable within the adapter member (24) and infinitely positionable along the stop external threads (72) by manually rotating the stop regulator (42). A ball or male detent member (44) biased to engage detent cavities (82) of the stop regulator (42) provides predetermined stop axial displacement.