INSTANT CHANGE TOOL HOLDER

摘要

A tool holder characterized in that the drive housing socket and the tool adaptor shank driven thereby have a quick release connection with each other, and have sleeves rotatable thereon to facilitate the connection and disconnection of the adaptor and housing without stopping rotation of the machine tool spindle in which the drive housing is adapted to be mounted. The housing sleeve is axially movable on the housing between locking and unlocking positions and the housing has a latch mechanism which holds the housing sleeve in unlocking position, the latch mechanism being operative during axial insertion of the adaptor shank into the housing socket to initiate rotation of the shank for facilitating the making of an axially interfitted driving connection between the housing and shank and to automatically release the housing sleeve for movement to adaptor locking position.